JPH02203806A - Loading stage - Google Patents

Abstract

PURPOSE:To reduce the number of connecting parts between a support and top plates, and to carry out the regulation of the height smoothly, by composing a support with a front pillar and a rear pillar under the condition placing an interval before and behind, providing supporting bodies at the lower parts of the support, and installing top plates at the upper ends of the front pillar and the rear pillar respectively. CONSTITUTION:Between the lower part of a front tube 1 and a rear tube 2, a connecting tube 3 which consists of a round pipe material is installed by a welding or the like, and a support A is composed by linking both pillars A1 and A2 integrally in a parallel condition placing an interval before and behind with the connecting tube 3. Since the rear side of the loading stage where a large weight of a display C is loaded is made in a large load, and the front side where a light weight of a keyboard B is loaded is made in a small load, in the load distribution of the support A, the forward projection amount l1 of the front side legs 4 and 4 from the front pillar center is set smaller than the rearward projection amount l2 of the rear side legs 5 and 5 from the rear pillar center (l1<l2). On the other hand, the up and down movement of the top plates U1 and U2 can be carried out separately by separate elevator mechanisms (glass springs S1 And S2), and the up and down movement can be carried out smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mounting table used as an OA child table on which OA equipment such as a word processor or a personal computer is mounted.

[Conventional technology]

Conventionally, there have been various types of mounting tables for OA child tables.
- structure is known, but all basically have branch offices on both the left and right sides, and a top plate is attached between the supports on both sides to support the load on both the left and right sides.

[Problems to be Solved by the Invention [7]] However, this conventional mounting table with support on both sides had the following drawbacks.

(2) Since both the left and right sides of the top plate are connected to the supports on both sides, there are many connection points, which makes assembly difficult.

Moreover, in order to maintain the strength of the columns by fixing the spacing between the left and right columns, it is customary to connect the columns with connecting members, which increases the number of constituent members, making assembly even more troublesome and causing structural problems. It becomes complicated and lacks beauty in appearance.

■The support and top plate are usually assembled by screwing together, taking into consideration the convenience of stocking and transportation.

If equipment is placed on the top plate in this assembled state and a load is applied, bending stress will be applied to the branch, causing play in the screw connection, which may cause shaking during use. The support state tends to become unstable.

(2) In OA child tables, a lifting mechanism is often provided on the support so that the height of the top plate can be changed according to the physique of the user. In this case, with the conventional mounting table, it is difficult to completely synchronize the y11 lowering movements of the left and right support columns, so it is difficult to smoothly perform the J adjustment operation for the height.

Therefore, the present invention provides a mounting table that can solve the above-mentioned drawbacks by using a completely new top plate support structure.

[Means to solve the problem]

In the present invention, a front pillar and a rear pillar are integrally formed with an interval in front and back to form a branch 114, a pillar support is provided at the lower part of this branch, and a pillar support is provided at the upper end of the front pillar and the rear pillar, respectively. Remove the top plate (=J).

In this case, as an example of the structure of the strut, the strut is constituted by a front pillar, a rear pillar, and a connecting member that connects these together with a space between them in the front and back.

In addition, as another example of the structure of the pillar, the lower part of one of the front pillar and the rear pillar is bent, and the bent end is connected to the other to form a pillar.

On the other hand, the column support body is constituted by a pair of legs on the front and rear, and a pair on the left and right sides.

In this case, the front leg protrudes forward m (
11 and the amount of rearward protrusion D2 of the rear leg from the center of the rear column, it is desirable to set the relationship gl<(12).

As an example of the structure for attaching the leg body, a notch is provided in the lower end surface of the column, and a one-digit cutout is made at the lower end of the column with the leg body engaged with the notch.

Further, in the present invention, each of the front column and the rear column is configured to be adjustable in height by one inch by a tube body and a gas spring with a locking mechanism attached to the tube body.

In this case, the gas spring is attached to the tube with the rod end fixed inside the tube and the cylinder inserted into the tube.

Further, when this gas spring is used as a y1+1 means, a first detent mechanism is provided between the cylinder of the gas spring and the tubular body to prevent rotation of the cylinder with respect to the tubular body;
A second anti-rotation mechanism is provided between the cylinder and the top plate to prevent rotation of the top plate relative to the cylinder.

[Effect]

In this way, by having a top plate attached to the upper ends of the front and rear pillars, which are integrated at intervals in the front and back, (1) there are fewer connecting points between the columns and the top plate. I'm done.

Moreover, unlike the conventional double-sided support type mounting table, there is no need for members to connect the supports, so assembly is easy, the structure is simplified, and a simple aesthetic appearance can be achieved.

(2) Since the top plate can be attached to the front and rear columns at the center of load or at a single point close to it, I11
It is possible to obtain a stable support state even if there is no play in the standing state.

(3) When installing an elevating mechanism in a branch office, there is no problem of synchronization of elevating and lowering operations as with conventional mounting tables, and height adjustment operations can be performed smoothly.

In addition, when configuring a column, the front column and the rear column are made into separate parts, and by connecting them with a connecting member, another column configuration is possible, for example, when configuring a U-shaped column from a single tube body. Compared to this, relatively troublesome bending processing (bender processing) is not required, resulting in better productivity.

Furthermore, by making the front pillar and the back pillar separate shrines, it is possible to vary their diameters depending on the load applied to each, or to use separate moons for both pillars.

On the other hand, like the OA child table, the front load is in front of the rear! ] In the case of a mounting table smaller than j, the forward protrusion amount ρ1 of the front leg body
By setting the relationship between and the rearward protrusion m (12) of the rear leg body to ul>ρ2, which corresponds to the 61j weight distribution, the strut support can be made into a convex structure.

Furthermore, by using a means for attaching the leg to the column by engaging and connecting the leg to a notch provided at the lower end of the column, there is no need to curve the end surface of the leg.

Furthermore, by using a gas spring with a locking mechanism as the lifting mechanism, lifting and lowering operations can be performed more easily than, for example, when using a screw type or l/l' lowering mechanism.

In this case, by using the gas spring with the cylinder on the movable side, the operating lever can be provided close to the top plate at the top of the column. This makes lever operation easier. Additionally, since the rod is hidden within the strut, damage to the rod can be prevented and the life of the gas spring can be extended.

On the other hand, with the structure of claim 0, since the top plate is prevented from rotating, collisions between the top plates, which are problems caused by providing the top plate on both the front and back sides and in a -point supported state, etc. can be prevented.

〔Example〕

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

In the embodiment, this is taken as an example to which the OA child table is applied.

First Embodiment (See FIGS. 1 to 7) A is a column, A1 is a front column constituting this column A, and A2 is a rear column.

The front pillar A1 and the rear pillar A2 each have a lower fixed pipe (hereinafter referred to as the front pipe and rear pipe) 1.2 made of a round pipe shrine, and a gas spring s with a known locking mechanism as a lifting mechanism.
1. Stepless expansion and contraction (height adjustment) by installing s2
A front top plate U1 on which a keyboard B is placed is attached to the upper end of the front gas spring S1, and a rear top plate U2 on which a display device C such as a CRT is placed is attached to the upper end of the rear gas spring S2. ing.

Between the lower parts of the front pipe 1 and the rear pipe 2, a connecting pipe = 3 consisting of a round pipe 4 is installed by welding or the like. They are placed parallel to each other and connected together to form support column A.

The front column A1 also includes a pair of left and right front legs (hereinafter simply referred to as front legs) 4.
4, and the rear column A2 has a pair of left and right rear legs (hereinafter simply referred to as rear legs) extending to both rear left and right sides at the lower part of the rear tube 2.5.
Each of the legs 4, 4, and 5.5 constitutes a column support for making the column A stand on its own on the floor. Each leg 4, 4, 5.5 is formed of a round pipe material, and is welded to the side surface of the front tube 1 and the rear tube 2.

In this way, the front and rear legs 4 and 5 can be welded and fixed separately to the front column A1 and the rear column A2, so the column can be formed from a single straight pipe and the front and rear legs can be concentrated on the lower peripheral surface of this column. This eliminates the concentration of welding stress that occurs when welding and fixing. For this reason,
Taking legs 4 and 5 (=H advantage on I strength).

On the other hand, in this mounting table, the weight distribution of the support column A is such that the rear side, where the heavy display device C is placed, has a heavy load, and the front side, where the lightweight keyboard B is placed, has a small load. In view of this, as shown in Figure 2, the front legs 4
．． The amount of forward protrusion (hereinafter referred to as span) 61 from the center of the front column of 4 is the amount of rear protrusion from the center of the rear column of rear leg 5.
(gl<<+2).

In this way, within the range that can secure the necessary load bearing capacity,
By varying the spans of the front and rear legs 4 and 5 in accordance with the weight distribution, the distance between the front and rear legs can be minimized to make the column support compact.

In addition, in this case, each leg 4 is placed as shown in FIG.
, 5, within the above relationship of Q1 and ρ2, so that the end of each leg does not protrude outside the top plates U1 and U2 in plan view, or even if it does, it protrudes very little. It is set.

6 are casters for moving the table provided at the end of each of these legs 4 and 5.

] Next, the elevating structure of the front column A1 and the rear column A2 will be described in detail with reference to FIG. 5 and the like.

The gas springs 5182 of the front column A1 and the rear column A2 are
The rod 7 is inserted into the front tube 1 and the rear tube 2 with the rod 7 on the lower side and the cylinder 8 on the upper side, respectively, and the lower end of the rod 7 is fixed to the lower part of the front tube 1 and the rear tube 2 via the rod receiver 9. are doing. Therefore, this gas spring s1. When s2 is activated, the cylinder 8 moves up and down to move the front column A1 and the rear column A.
2 is designed to expand and contract.

In this way, when the cylinder 8 is a movable member that moves in and out of the front tube] and the rear tube 2 (the rod 7 is hidden inside the front tube 1 and the rear tube 2 as a fixed side), the gas spring s1 ．． By subtracting s2 by (=1), damage to the rod 7 can be prevented, and the life of the gas springs s1 and s2 can be improved.

In addition, according to this embodiment structure in which the front pipe and the rear pipe 2 are connected by the connecting pipe 3 to form the strut A, the front pipe and the rear pipe are connected by bending the round pipe into a U-shape. Compared to the case where they are connected integrally through an arc-shaped part, the length of both straight pipe parts is longer with the same strut length, so the length of the gas spring 5182 is lengthened accordingly to expand and contract. The stroke (height adjustment range) can be increased. Or conversely, if the length of the gas springs is the same, the length of the struts can be shortened.

The front top plate U1 and the rear top plate U2 each have this gas spring s1. Attach the gas spring s1 to the upper end of the cylinder of s2. By adjusting the expansion and contraction of s2, each can be set to an arbitrary height position.

A valve (not shown) for controlling pressurization (extension) and pressure release (reduction) of the gas springs s1 and s2 is provided in the second part of the cylinder. The operating lever 10.10 for operating this valve is located at one end of the lever or at the top plate U1.
The gas springs s1. It is installed horizontally from the top of the cylinder of s2 along the bottom surface of the top plate. If you do this, the top plate IJI
, When holding these width direction ends and pushing them down in order to lower the height of U2, it is possible to simultaneously grasp the operation lever 10 and perform a pull-up operation (pressure release operation).

Therefore, even a third person can easily lower the top plate.

In this mounting table, as mentioned above, the front column A1 and the rear column A
2 are integrally connected to constitute a column A, and a top plate U1. Since U2 is installed, compared to the conventional mounting table that supports both sides, the top plate U and U2 can be attached to the pillar A at each location, and there is no need for a member to connect the pillars to each other. This simplifies assembly, simplifies the overall structure, and provides a simple aesthetic appearance.

In addition, since the top plates Ui and U2 can be attached to the front column A1 and the rear column A2 at the center when viewed from the 1-17 side as shown in the figure, that is, near the load center, When equipment is placed on the top plate, the stress acting on the top tray EJ is small. Therefore, this tray A1 is less likely to wobble, and a stable support condition can be obtained.

On the other hand, the top plate U1. Since U2 can be raised and lowered by a single lifting mechanism (gas springs S1 and S2), the problem of synchronization of the conventional lifting mechanisms on both sides is eliminated, and the lifting operation can be performed smoothly.

Furthermore, a gas spring s1 with a locking mechanism is used as a lifting mechanism. s2, compared to the conventional screw-type lifting mechanism, the top plates U1 and U2 can be raised by simply pushing down the operating lever 10, and when descending, the operating lever 10 must be pulled up to release the pressure. By pressing down, the height of the top plates U1 and U2 can be adjusted steplessly.

However, as it is, the gas spring SL.

The cylinders 8 and 8 of S2 rotate with respect to the front tube 1 and the rear tube 2, and the top plate Ui rotates with respect to the cylinders 8 and 8.

Since U2 is in a state where it can rotate, the top plate U1
, U2 may rotate.

Therefore, the following anti-rotation mechanism is provided.

(1) Gas spring s1. Detent mechanism for cylinder 8 of s2 (first detent mechanism, see Figures 5 and 6) Guide plates 11 are fixed to the inner surfaces of the front tube 1 and rear tube 2 in the vertical direction, respectively.

On the other hand, gas spring s1. A cylindrical guide tube 12 is fixed to the lower end of the cylinder 8 on the s2 side.

This guide cylinder 12 has a guide groove 1 in the vertical direction on the outer peripheral surface.
2a and guide play in this guide groove 12a!・1
1 are engaged so that they can be slid up and down relatively. Thereby, the cylinders 8, 8 are configured to be prevented from rotating relative to the front tube and the rear tube 2 as much as possible throughout the entire expansion and contraction stroke of the gas spring 5182.

(II) Top plate U1 for cylinders 8, 8. Detent mechanism for U2 (second detent mechanism 4; 6, see Figures 5 and 7) A Morse bar shaft 13 is integrally provided at the upper end of the cylinder 8, while a top plate holder is fixed to the bottom surfaces of the top plates u1 and U2. A Morse taper tube 15, into which the Morse taper shaft 13 is fitted, is fixed to the center of the lower surface of the cylinder 14, and is basically configured to prevent the top plates U1 and U2 from rotating relative to the cylinder 8.8.

However, with only this Morse bar connection structure,
When a large rotational moment is applied to the top plates U1 and U2, it cannot sufficiently resist.

Therefore, a roll pin (
A so-called C pin) 16 is installed in the radial direction through the center of the tube, while a pin engagement groove 17 with an approximately semicircular cross section is provided in the upper end surface of the Morse bar shaft 13 in the radial direction through the center of the coaxial tube. The roll pin 16 is engaged with this pin engagement groove 17.

Due to the engagement between the roll pin 16 and the pin engagement groove 17, even when a large rotational moment is applied to the top plate side,
Rotation of the Morse taper tube 15 (top plate U1U2) with respect to the Morse taper shaft 13 (cylinder 8) can be effectively prevented.

In this way, the top plate U1. Since the rotation of U2 can be suppressed, this top plate U1. It is possible to prevent collisions between top plates or between devices due to the rotation of U2, or collisions between one top plate and devices placed on the other.

Second Embodiment (See FIG. 8) In each of the following embodiments, only the differences from the first embodiment will be explained.

As a means of attaching each leg 4, 4, 5.5 to the column A,
In the first embodiment, the front legs 4, 4 and the rear legs 5, 5 are welded and fixed to the lower side surfaces of the front tube and the rear tube 2, respectively, but according to this, the end surfaces of the legs must be processed to have a complicated curved surface. .

Therefore, in this second embodiment, notches 18 are provided on both left and right sides of the lower end surfaces of the front tube 1 and the rear tube 2, and each leg end is
Means is taken to weld and connect the engaging portions in a state where they are engaged with each other. By doing this, the above-mentioned curved surface processing becomes unnecessary, so that the processing of the legs 4.5 becomes easy.

In this case, the notch 18 is semicircular as shown in the figure,
The welding may be carried out in a half-immersed state where the upper radial flat part of the leg end engages with the notch 18, or the notch 18 may be extended upward and the leg end welded in a fully immersed state. good.

Third Embodiment (See Figure 9) In both of the above embodiments, the front legs 4, 4 were attached to the front tube 1, and the rear legs 5.5 were attached to the rear tube 2, whereas in the third embodiment, each of these legs 4, 4, and 5.5 are attached to the connecting pipe 3.

Fourth Embodiment (See Figure 10) As for the strut structure, in each of the above embodiments, the front tube 1 and the rear tube 2 were connected by a connecting tube 3 at the bottom of each other, but in the fourth embodiment, both tubes 1, 2 are connected to each other approximately in the center by a connecting pipe 3, and the support column A is formed into an H shape when viewed from the side.

Alternatively, as shown in phantom lines in FIG. 10, both tubes 1.2 may be connected at their lower ends by a connecting tube 3.

Fifth Embodiment (See Fig. 11) Similarly, as a branch office configuration, in each of the above embodiments, the column A was composed of the front column A1, the rear column A2, and the connecting pipe 3, whereas in the fifth embodiment, the front column A1 The front tube 1 is bent into an L-shape to form a connecting portion 1a at the lower part, and the tip of this connecting portion 1a is connected to the rear tube 2 to form the strut A.

Other embodiments (a) In principle, the front tube 1 and the rear tube 2 have the same diameter N method, but for example, when the front load is smaller than the rear load, as in the case of the OA table mentioned in the above example, The diameters of both tubes 1.2 may be made different, such as by making the front tube 1 smaller in diameter than the rear tube 2.

Conversely, by adopting the strut structure of each of the above embodiments in which the front tube 1 and the rear tube 2, which are separate members, are connected to form the strut A, for example, the front tube 1 and the rear tube 2 can be bent into a U-shape. There is no longer a restriction that the diameter of each pipe is uniformly specified, as is the case when the pipe and rear pipe are integrally formed continuously, and the optimum diameter can be used depending on the load etc. applied to each pipe. It is.

(b) For the same reason, it is not necessarily necessary to use round pipes as the materials for the front pipe], rear pipe 2, and connecting pipe 3 as in the above embodiment; all or some of them may be made of square pipes. A pipe, a pipe with an oval cross section, etc. can be used. If square pipes are used for the front pipe 1, the rear pipe 2, or both, it becomes easy to weld the connecting pipe 3 thereto. In this case, the guide tube 1 shown in FIG.
If 2 is formed into a rectangular tube shape corresponding to the front tube 1 or the rear tube 2, the rotation prevention effect of the cylinder 8 of the gas springs S1 and S2 can be obtained only by these.

(c) In the above embodiment, the front tube 1 and the rear tube 2 are provided with gas springs s1. s2 was attached to form the telescopic front pillar A1 and rear pillar A2, which allowed the height of the top plate to be adjusted and hung, but in the present invention, C basically uses this height adjustment mechanism. Without installing the front tube 1 and the rear tube 2 as they are, as the front column A1 and the rear column A2, the top plate U1 is directly attached to the upper ends of these.
, U2 may be attached. In this case, the lengths of the front tube 1 and the rear tube 2 (heights of both top plates U1 and U2) may be different or may be the same.

4.5 (d) As the cable material for the front and rear legs, rods, shaped steel, etc. may be used instead of the pipes used in the above embodiments. Also, in order to make the column support as compact as possible,
As in the above example, the front and rear leg spans g1, g
It is desirable to set the relationship of Q2 to pl < n2, but depending on the type of mounting table, usage, etc., Q1 = n2 or j2
It may be set to the relationship 1>02.

(E) As a column support, instead of the front and rear legs 4 and 5 mentioned in the above embodiment, for example, a leg tube is attached vertically to the lower surface of the center of the connecting part 3, and a disk-shaped or other shape is attached to the lower end of the leg tube. A base may be attached.

〔Effect of the invention〕

As described above, when using the mounting table of the present invention, the front column and the rear column are integrally formed with a space between them in the front and back to form a column, and a column support is attached to the lower part of this column, and
Since the top plate was attached to the top of the front and rear pillars,
It has the following effects.

■ Fewer points are needed to connect the support and top plate. Moreover, there is no need for a member to connect the supports as in the conventional double-sided support type mounting table. Therefore, it is easy to assemble, the structure is simplified, and a simple aesthetic appearance can be achieved.

■ Since the top plate can be attached to the front and rear columns at a single point at or near the center of load, stable support can be obtained without wobbling during assembly.

■ When installing a 511 unloading machine (1.1) at a branch office, there is no problem of synchronization of lifting and lowering operations as with conventional mounting tables, and height adjustment operations can be performed smoothly.

In addition, when configuring a pillar, the front pillar and the rear pillar are made into a separate structure, and by connecting them with a connecting part, another pillar structure is possible, for example, when a U-shaped pillar is constructed from one 91-piece. Compared to this, relatively troublesome bending processing (bender processing) is not required, resulting in improved productivity. Furthermore, by making the front pillar and the rear pillar into annex 4's, it is possible to vary their diameters depending on the load applied to each pillar, or to use different materials for both pillars.

On the other hand, like the OA table, the front load or the rear '1 = i7
In the case of a mounting table smaller than the load, the relationship between the forward protrusion amount g1 of the front leg and the rearward protrusion amount ρ2 of the rear leg corresponds to the load distribution. By setting C1>ρ2, the pillar support can be made into a convex structure.

Furthermore, by using a gas spring with a locking mechanism as the lifting mechanism, the cylinder can be moved up and down, compared to the case where, for example, a screw type lifting mechanism is used.

In this case, by using a gas spring with the cylinder serving as a movable member, the operating lever can be provided close to the top plate. This makes lever operation easier. In addition, since the rod is hidden within the support, damage to the rod can be prevented and the life of the gas spring can be extended.

On the other hand, claim 9, wherein both the first and second anti-rotation mechanisms are provided.
With this configuration, the top plate is prevented from rotating.
It is possible to prevent collisions between the top plates and the top plates, which occur when the top plates are provided separately at the front and rear and supported at a negative point.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the present invention, Fig. 2 is a side view of the same, Fig. 3 is a front view of the same, Fig. 4 is a plan view of the same, and Fig. 5 is an enlarged view taken along the line V-v of Fig. 3. 6 is an enlarged sectional view taken along the line Vl-Vl in FIG. 5, FIG. 7 is an enlarged sectional view taken along the line ■-■ in FIG. , Figure 10 is the same figure 4.
Embodiment FIG. 11 is a side view showing the fifth embodiment. A... Support column, A1... Front column of the support column, A2... Rear column, Ul, U2... Top plate, 1... Front tube constituting the front column, 2... Rear column. Rear tube constituting 3... Connecting tube connecting front tube and rear tube, 4, 4... Front leg body, 5.5...
・Rear leg body, sl, s2...gas spring, 7...
・Gas spring rod, 8...same cylinder, 1]
...Guide plate constituting the first rotation IL mechanism,
12...the same guide cylinder, 12a...the guide l1%l of the same guide cylinder;, ]3...2nd turn + L machine) 1-1 with 1+11 Morse taper tube, 15...the same guide cylinder Morse taper pipe, 16... Roll pin, 17... Pin engagement groove, 18... Notch for attaching the leg body provided at the lower end of the column.

Claims (1)

[Claims] 1. The front pillar and the rear pillar are integrally formed with a space between them in the front and back to form a pillar, and a pillar support is provided at the lower part of the pillar, and the front pillar and the rear pillar are A mounting stand characterized by having a top plate attached to each upper end. 2. The mounting table according to claim 1, wherein the support is constituted by a front pillar, a rear pillar, and a connecting member that connects these together with a space between them in the front and rear. 3. The mounting table according to claim 1, wherein the lower part of one of the front column and the rear column is bent and the bent end is connected to the other to form a column. 4. The mounting table according to any one of claims 1 to 3, wherein the column support is constituted by a pair of right and left legs, respectively, at the front and rear. 5. The relationship between the amount of forward protrusion l_1 of the front leg from the center of the front column and the amount of rearward protrusion l_2 of the rear leg from the center of the rear column is l
The mounting table according to claim 4, characterized in that _1<l_2. 6. The mounting table according to claim 4 or 5, wherein a notch is provided in the lower end surface of the support, and the legs are attached to the lower end of the support while being engaged with the notch. 7. The height of the front column and the rear column is adjustable by means of a tube and a gas spring with a locking mechanism attached to the tube, respectively, according to any one of claims 1 to 6. Mounting table. 8. The rod end of the gas spring is fixed inside the tube,
8. The mounting table according to claim 7, wherein the cylinder is attached to the tube body so as to move in and out of the tube body. 9. A first rotating mechanism is provided between the gas spring cylinder and the tubular body to prevent rotation of the cylinder relative to the tubular body, and a second rotating mechanism is provided between the cylinder and the top plate to prevent rotation of the top plate relative to the cylinder. 9. The mounting table according to claim 8, further comprising a stop mechanism.