JPH07114731B2 - Table - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a mounting table used as an OA table or the like on which an OA device such as a word processor or a personal computer is mounted.

[Conventional technology]

Conventionally, as a mounting table for OA tables, etc.
As shown in Japanese Utility Model Publication No. 59-21234 and Japanese Utility Model Laid-Open No. 59-21234, columns are set up on both the left and right sides, and a top plate is attached between the columns to support the load on both the left and right sides.

[Problems to be Solved by the Invention]

However, this conventional double-sided support type mounting table has the following drawbacks.

I. Since both the left and right sides of the top plate are connected to the columns on both sides, the number of connecting points is large and therefore assembly is troublesome. Moreover, since it is customary to connect the columns to each other with a connecting member in order to maintain the column strength by fixing the interval between the left and right side columns, the number of constituent members increases, and the assembly becomes more and more troublesome.
The structure is complicated and the appearance is not beautiful.

II. The columns and the top plate are usually assembled by screw connection in consideration of convenience such as stock and transportation. When equipment is placed on the top plate in this assembled state and a load is applied, bending stress acts on the support column and rattling is likely to occur at the screw connection part, so shaking occurs during use and support The state tends to be unstable.

In the III.OA table, an elevating mechanism is often provided on the column so that the height of the tabletop can be changed according to the physique of the user. In this case, in the conventional mounting table, it is difficult to perfectly synchronize the raising and lowering operations of the left and right support columns, and thus it is difficult to smoothly perform the height adjusting operation.

On the other hand, in order to eliminate these drawbacks
As shown in No. 7, a rear top plate is attached to the upper end of one height-adjustable strut, and a bracket is attached to this strut so that it can move forward and downward, and the front top plate is attached to the bracket. Was proposed.

However, according to this configuration, the following adverse effects have occurred.

Since the front top plate is deviated to the front with respect to the support column that supports the load, the weight of the equipment placed on this front top plate causes a forward falling moment to the entire mounting table, and the stability is poor. Become.

For this reason, heavy objects cannot be placed on the front top plate, and the applications are limited.

In order to prevent falling, the legs supporting the columns must be lengthened to increase the supporting moment, which makes the legs heavier, which is disadvantageous in terms of assembly and transportation.

The support column is composed of a fixed column and an elevating column that slides with respect to the fixed column, and the bracket can be elevated and lowered only within the length range of the elevating column that is out of the fixed column of the column.
Therefore, the height adjustment range of the front top plate is limited.

A lift mechanism using a gas spring can be used for the support column, but the bracket can only be manually moved by manually sliding and tightening with a screw. Therefore, the height adjustment of the front top plate becomes troublesome.

Since the bracket can be raised and lowered only below the rear top plate, the front top plate cannot be located above the rear top plate. That is, the front top plate can always be used only in one pattern lower than the rear top plate, and both top plates have the same height or the front top plate is higher than the rear top plate depending on the height dimension of the mounted object. Cannot be used freely.

Therefore, the present invention basically provides a mounting table that does not cause the above-mentioned adverse effects while adopting a one-column system in which the top plate is supported by one column.

[Means for Solving the Problems]

According to the invention of claim 1, a front pillar and a rear pillar are integrally formed in a state in which a front pillar and a rear pillar are spaced from each other in the front-rear direction, and the front pillar and the rear pillar are formed on both lower front and rear sides of the pillar. A pair of left and right legs to support is provided, a front top plate is attached to the upper end of the front column, a rear top plate is attached to the upper end of the rear column, and the front column and the rear column are attached to the pipe body and this pipe body, respectively. The height is adjustable by a gas spring with a lock mechanism.

According to the invention of claim 2, in the structure of claim 1, a front pillar,
The support pillar is composed of a rear pillar and a connecting member for integrally connecting the rear pillar and the rear pillar with a space therebetween.

According to the invention of claim 3, in the structure of claim 1, 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.

The invention of claim 4 is the configuration according to any one of claims 1 to 3, wherein the front protrusion amount l ₁ of the front leg body from the center of the front column and the rear protrusion amount l ₂ of the rear leg body from the center of the rear column. Relationship with l ₁ <l ₂
Is set to.

According to a fifth aspect of the present invention, in the structure according to any one of the first to fourth aspects, a notch is provided in a lower end surface of the column, and the leg is attached to the lower end of the column with the leg engaged with the notch.

According to a sixth aspect of the present invention, in the structure according to any one of the first to fifth aspects, the gas spring is attached to the pipe body while the rod end is fixed in the pipe body and the cylinder moves in and out of the pipe body. Between the cylinder of the spring and the tube,
A first anti-rotation mechanism that prevents rotation of the cylinder with respect to the tubular body, and a second anti-rotation mechanism that prevents rotation of the top plate with respect to the cylinder are provided between the cylinder and the top plate.

[Action]

According to the above configuration, the front pillar and the rear pillar are integrated to form a pillar, and the front pillar and the rear pillar are attached to the front pillar and the rear pillar of this pillar, respectively. Was done 1
It is possible to eliminate the adverse effect as in the case of the main pillar structure.

That is, (a) since the load supporting shaft is distributed forward and backward by the front pillar and the rear pillar, the stability of the entire mounting table is good and the load supporting performance is high. For this reason, there is almost no restriction on the weight of the object placed on both top plates, that is, restrictions on the application.

(B) The length of the legs can be shortened because the load supporting performance is improved by the front and rear strut structure. Therefore, the legs are lightened, which is advantageous in terms of assembly and transportation.

(C) Since the height of the front and rear columns can be adjusted independently,
It is possible to adjust the height of both the front and rear top plates in a wide range and to freely set the front top plate higher than the rear top plate, and easily perform both front and rear pillars by gas springs.

Further, according to the structure of claim 2, wherein the front pillar and the rear pillar are separate members, and they are connected and integrated by a connecting member. According to the structure of another pillar, for example, a U-shaped pillar is composed of one tubular body. Compared with the above, productivity is improved because a relatively troublesome bending process (bender process) is not required. In addition, by forming the front pillar and the rear pillar as separate members, it is possible to make the diameters of these pillars different from each other according to the load applied to them and to use different materials for both pillars.

On the other hand, according to the configuration of claim 4, in the case of a mounting table in which the front load is smaller than the rear load like the OA table, the front protrusion amount l ₁ of the front leg body and the rear protrusion amount l _{2 of the} rear leg body are The relationship of
By setting l ₁ > l ₂ corresponding to the load distribution, it is possible to make the column support compact.

Further, according to the structure of claim 5 in which the leg body is engaged with and connected to the notch provided at the lower end of the column as means for attaching the leg body to the column, it is not necessary to process the end face of the leg body with a curved surface.

Further, according to the configuration of claim 6, wherein the gas spring is used in a state where the cylinder is on the movable side, the operation lever can be provided near the top plate at the upper part of the column. Therefore, the lever operation becomes easy. Further, since the rod is hidden inside the column, it is possible to prevent the rod from being damaged and improve the life of the gas spring.

In addition, since the top plates are prevented from rotating, it is possible to prevent the top plates from colliding with each other, which is a problem caused by providing the top plates separately in front and rear and in a single-point support state.

〔Example〕

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

In the embodiment, the OA table is applied as an example.

First Embodiment (see FIGS. 1 to 7) A is a pillar, A ₁ is a front pillar which constitutes this pillar A, and A ₂ is a rear pillar thereof.

The front pillar A ₁ and the rear pillar A ₂ are provided with lower fixed pipes (hereinafter, referred to as front pipe and rear pipe) 1 and 2 each made of a round pipe material, and gas springs S ₁ and S with a lock mechanism known as a lifting mechanism. _It is configured to be able to expand and contract continuously (height adjustment) by attaching ₂ to the upper edge of the front gas spring S _{1 and} the front top panel U ₁ on which the keyboard B is placed, and the upper edge of the rear gas spring S ₂ to the CR
Rear top plates U _{2 on} which the display devices C such as T are mounted are attached.

A connecting pipe 3 made of a round pipe material is attached between the lower portions of the front pipe 1 and the rear pipe 2 by welding or the like.
The pillar A is formed by integrally connecting A ₁ and A ₂ in a parallel state with a front and rear space.

Further, the front pillar A ₁ has a pair of left and right front leg bodies (hereinafter, simply referred to as front legs) 4, 4 extending to the front left and right sides at the lower portion of the front tube 1.
On the rear pillar A ₂ , a pair of left and right rear legs (hereinafter, simply referred to as rear legs) 5,5 extending to the rear left and right sides are attached to the lower portion of the rear tube 2, and these legs 4, 4, 5, 5. The column 5 constitutes a column support for allowing the column A to stand on the floor.

Each leg 4, 4, 5 is formed of a round pipe material, and is welded and fixed to the lower side surfaces of the front pipe 1 and the rear pipe 2.

In this way, the front and rear legs 4 and 5 can be welded and fixed to the front column A ₁ and the rear column A ₂ , so the column is formed by one straight pipe, and the front and rear legs are formed on the lower peripheral surface of this column. There is no concentration of welding stress as in the case of welding and fixing in a concentrated manner. Therefore, legs 4,5
Is advantageous in terms of mounting strength.

On the other hand, in this mounting table, in view of the load distribution of the support columns A, the rear side on which the heavy display device C is mounted has a large load, and the front side on which the lightweight keyboard B is mounted has a small load. As shown in Fig. 2, the amount of forward protrusion of the front legs 4, 4 from the center of the front column (hereinafter referred to as "span") l
₁ is set to be smaller than the rearward protruding amount l ₂ from the center of the rear column of the rear legs 5 and 5 (l ₁ <l 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 according to the load distribution, it is possible to minimize the dimension between the front and rear legs and keep the column support compact.

Further, in this case, as shown in FIG. 4, the front legs 4 do not interfere with the use of the front legs 4 and the rear legs 5 do not interfere with the setting of the table on the wall. ,
In the relationship of l ₁ <l ₂ described above, the length dimension of 5 is set such that each leg end does not crawl out of the top plates U ₁ and U _{2 in} plan view, or even if it crawls out, it is very small. Is set to

6 are casters for moving the table, which are provided at the leg ends of the legs 4 and 5, respectively.

Next, the elevating structure of the front pillar A ₁ and the rear pillar A ₂ of the pillar will be described in detail with reference to FIG.

The gas springs S ₁ and S ₂ of the front pillar A ₁ and the rear pillar A ₂ are fitted into the front pipe 1 and the rear pipe 2 with the rod 7 on the lower side and the cylinder 8 on the upper side, and the lower end of the rod 7 is inserted. Are fixed to the lower portions in the front tube 1 and the rear tube 2 via rod receivers 9.

Therefore, when the gas springs S ₁ and S ₂ are actuated, the cylinder 8 moves up and down and the front pillar A ₁ and the rear pillar A ₂ expand and contract.

In this manner, the gas spring is used in a state where the cylinder 8 serves as a movable member that moves in and out of the front pipe 1 and the rear pipe 2 (a state in which the rod 7 is hidden in the front pipe 1 and the rear pipe 2 as a fixed side).
By mounting the S _1, S _2, it is possible to prevent damage to the rod 7, it is possible to improve the life of the gas spring S _1, S _2.

Further, according to this embodiment configuration in which the front pipe 1 and the rear pipe 2 are connected by the connecting pipe 3 to form the support A, one round pipe material is bent into a U-shape to form the front pipe and the rear pipe. Compared to the case where they are connected continuously through an arcuate portion, the length of both gas pipes S ₁ and S ₂ is increased by the length of both pipe straight portions with the same strut length. The length can be increased to increase the expansion / contraction stroke (height adjustment range). On the contrary, if the gas springs have the same length, the column length can be shortened.

Before the top board U ₁ and rear casing U ₂ are respectively attached to the cylinder upper end of the gas spring S _1, S _2, gas springs S _1, S ₂
By adjusting the expansion and contraction, the height can be set to any desired value.

A valve (not shown) that controls pressurization (extension) and pressure release (reduction) of the gas springs S ₁ and S ₂ is provided at the upper part of the cylinder. The operation levers 10, 10 for operating this valve are arranged so that their lever ends are located below the widthwise ends of the top plates U ₁ , U ₂ from above the cylinders of the gas springs S ₁ , S _2. It is installed sideways along the lower surface of the top plate.

In this way, when lowering the heights of the top plates U ₁ and U ₂ by holding them in the width direction, the operation lever 10 can be simultaneously grasped and pulled up (pressure release operation). . Therefore, even one person can easily perform the operation of lowering the top plate.

However, in this state, the cylinders 8 and 8 of the gas springs S ₁ and S ₂ rotate with respect to the front pipe 1 and the rear pipe 2, and
Since the ceiling plate U _1, U ₂ is in the state capable of rotating relative to 8,8, there is a possibility that the top plate U _1, U ₂ is rotated during use.

Therefore, the following anti-rotation mechanism is provided.

(I) Anti-rotation mechanism for cylinders 8 of gas springs S ₁ and S ₂ (first anti-rotation mechanism, see FIGS. 5 and 6) On the front pipe 1 and rear pipe 2 side, guide plates are vertically arranged on the inner surface. 11 is stuck. On the other hand, on the side of the gas springs S ₁ and S ₂ , the cylindrical guide tube 1 is attached to the lower end of the cylinder 8.
2 is stuck. A guide groove 12a is provided on the outer peripheral surface of the guide cylinder 12 in the vertical direction, and the guide plate 11 is engaged with the guide groove 12a so as to be relatively slidable in the vertical direction. Thus, the rotation of the cylinders 8 and 8 with respect to the front pipe 1 and the rear pipe 2 is prevented as much as possible through the entire expansion and contraction stroke of the gas springs S ₁ and S ₂ .

(II) Anti-rotation mechanism for top plates U ₁ and U ₂ with respect to cylinders 8, 8 (second anti-rotation mechanism, see FIGS. 5 and 7) A Morse taper shaft 13 is integrally provided on the upper end of the cylinder 8 while the top plate is provided. The Morse taper pipe 15 into which the Morse taper shaft 13 is fitted is fixed to the central portion of the lower surface of the top plate receiver 14 fixed to the lower surfaces of U ₁ and U ₂ , and basically, with respect to the cylinders 8 and 8 by these. The top plates U ₁ and U ₂ are prevented from rotating.

However, only with the connection structure by this Morse taper,
It cannot be sufficiently counteracted when a large rotational moment is applied to the top plates U ₁ and U ₂ .

Therefore, a roll pin (so-called C pin) 16 is attached to the upper end of the Morse taper pipe 15 in the radial direction through the center of the pipe, while the upper end face of the Morse taper shaft 13 has a pin engaging groove having a substantially semicircular cross section. 17 is provided in the radial direction passing through the coaxial center, and the roll pin 16 is engaged with the pin engaging groove 17.

Due to the engagement action of the roll pin 16 and the pin engagement groove 17, even when a large rotational moment acts on the top plate side, the Morse taper pipe 15 (top plate U ₁ , U ₂ ) with respect to the Morse taper shaft 13 (cylinder 8). It is possible to effectively prevent the rotation of the.

In this way, the top plate is provided by both the first and second detent mechanisms.
Since the rotation of U ₁ and U ₂ can be suppressed, this top plate U ₁ U ₂
It is possible to prevent the top plates from colliding with each other or the devices from colliding with each other due to the rotation of the device, or the top plate and the devices placed on the other from colliding with each other.

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

In the first embodiment, the front legs 4, 4 and the rear legs 5, 5 were welded and fixed to the lower side surfaces of the front pipe 1 and the rear pipe 2, respectively, as means for attaching the legs 4, 4, 5, 5 to the column A. According to this, the end face of the leg must be subjected to a troublesome curved surface processing.

Therefore, in this second embodiment, notches 18 are provided on the left and right sides of the lower end surfaces of the front pipe 1 and the rear pipe 2, and means for welding and joining the engaging portions in a state where the leg ends are engaged with the notches 18. Is taking. By doing this, the above curved surface processing becomes unnecessary,
The legs 4 and 5 can be easily processed.

In this case, as shown in the drawing, the notch 18 may be semicircular, and the radial upper half of the leg end may be welded in a semi-submerged state in which the notch 18 is engaged. Alternatively, the leg ends may be welded in a completely submerged state.

Third Embodiment (see FIG. 9) In both of the above-mentioned embodiments, the front legs 4 and 4 are the front pipe 1 and the rear legs 5 and 5 are the rear pipe 2.
On the other hand, in the third embodiment, these legs 4, 4, 5 are attached to the connecting pipe 3.

Fourth Embodiment (See FIG. 10) As a pillar structure, in each of the above-mentioned embodiments, the front pipe 1 and the rear pipe 2 were connected to each other by a connecting pipe 3 at their lower portions, but in the fourth embodiment, both pipes 1 and 2 are connected. Are connected to each other by a connecting pipe 3 at approximately the center of each other, so that the pillar A is formed in an H shape when viewed from the side.

Alternatively, as shown by the phantom line in FIG. 10, both pipes 1 and 2 may be connected to each other by a connecting pipe 3 at their lower ends.

Fifth Embodiment (Refer to FIG. 11) Similarly, in the above-mentioned respective embodiments, a front pillar A ₁ and a rear pillar are used as the pillar structure.
While the pillar A is constituted by A ₂ and the connecting pipe 3, in the fifth embodiment, the front pipe 1 of the front pillar A ₁ is bent into an L-shape to form the connecting portion 1a at the lower portion. The front end of 1a is connected to the rear tube 2 to form a column A.

Other Embodiments (a) The front pipe 1 and the rear pipe 2 have solid diameters in principle, but when the front load is smaller than the rear load as in the OA table mentioned in the above embodiment, the front load is smaller than the front load. Tube 1 to rear tube 2
The diameters of the two pipes 1 and 2 may be different, for example, by making the diameter smaller.

To put it the other way around, by adopting the strut structure of each of the above-described embodiments in which the front pipe 1 and the rear pipe 2 which are separate members are connected to each other to form the strut A, for example, one pipe material is bent into a U-shape to be formed in front. As in the case where the pipe and the rear pipe are integrally formed, there is no restriction that the diameters of the pipes are uniformly specified, and it is possible to use the one having the optimum diameter according to the load applied to each. Of.

(B) For the same reason, as the material of the front pipe 1, the rear pipe 2, and the connecting pipe 3, it is not always necessary to unify them with the round pipe material as in the above embodiment, and all or some of them may be used. A square pipe or a pipe having an oval cross section can be used. If square pipes are used for the front pipe 1 or the rear pipe 2 or both of them, the welding of the connecting pipe 3 to them can be simplified. Further, in this case, the guide tube 12 shown in FIG.
Is formed in a rectangular tube shape corresponding to the front pipe 1 or the rear pipe 2, the detent action of the gas springs S ₁ and S ₂ of the cylinder 8 can be obtained only by these.

(C) As a material for the front and rear legs 5 and 6, a bar material, a shaped steel material or the like may be used instead of the pipe material used in the above-mentioned embodiment. Also, in order to make the strut support as compact as possible,
It is desirable to set the relationship between the front and rear leg spans l ₁ and l ₂ to l ₁ <l ₂ as in the above embodiment. However, depending on the type of mounting table, application, etc., l ₁ = l ₂ or l You may set to the relationship of ₁ > l ₂ .

(D) As the pillar support, the front and rear legs listed in the above embodiment
Instead of 4, 5, a leg pipe may be attached vertically to the lower surface of the central portion of the connecting portion 3, and a disc-shaped base or the like may be attached to the lower end of the leg pipe.

〔The invention's effect〕

As described above, according to the present invention, the front pillar and the rear pillar that are height-adjustable by the gas spring are integrally formed in a state in which the front pillar and the rear pillar are spaced apart from each other in the front-rear direction. Since a pair of left and right legs are attached to the lower part of the rear column, and the front top plate is attached to the upper end of the front column and the rear top plate is attached to the upper end of the rear column, the following effects are achieved.

(A) Since the load supporting shaft is distributed back and forth by the front pillar and the rear pillar, the stability of the entire mounting table is good and the load supporting performance is high. For this reason, there is almost no restriction on the weight of the object placed on both top plates, that is, restrictions on the application.

(B) The length of the legs can be shortened because the load supporting performance is improved by the front and rear strut structure. Therefore, the legs are lightened, which is advantageous in terms of assembly and transportation.

(C) Since the height of the front and rear columns can be adjusted independently,
It is possible to adjust the height of both the front and rear top plates in a wide range and to freely set the front top plate higher than the rear top plate, and easily perform both front and rear pillars by gas springs.

Further, according to the invention of claim 2, wherein the front pillar and the rear pillar are separate members, and these are connected and integrated by a connecting member, in the case of forming a U-shaped pillar from another tubular body as another pillar structure. Compared with the above, productivity is improved because a relatively troublesome bending process (bender process) is not required. In addition, by forming the front pillar and the rear pillar as separate members, it is possible to make the diameters of these pillars different from each other according to the load applied to them and to use different materials for both pillars.

On the other hand, according to the invention of claim 4, in the case of a mounting table in which the front load is smaller than the rear load such as the OA table, the front protrusion amount l ₁ of the front leg body and the rear protrusion amount l _{2 of the} rear leg body are The relationship of
By setting l ₁ > l ₂ corresponding to the load distribution, it is possible to make the column support compact.

Further, according to the invention of claim 5, as a means for attaching the leg to the column, the leg is engaged with the notch provided at the lower end of the column and connected, so that it is not necessary to process the curved end surface of the leg.

Further, according to the invention of claim 6, the gas spring is
Since the cylinder is used in the movable side, the operation lever can be provided near the top plate at the upper part of the column. Therefore, the lever operation becomes easy. Further, since the rod is hidden inside the column, it is possible to prevent the rod from being damaged and improve the life of the gas spring.

In addition, since the top plates are prevented from rotating, it is possible to prevent the top plates from colliding with each other, which is a problem caused by providing the top plates separately in front and rear and in a single-point support state.

[Brief description of drawings]

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. Sectional view, FIG. 6 is a sectional view taken along line VI-VI in FIG. 5, FIG. 7 is an enlarged sectional view taken along line VII-VII, FIG. 8 is a second embodiment of the present invention, and FIG. 9 is a third embodiment. FIG. 10 is a side view showing the fourth embodiment and FIG. 11 is a side view showing the fifth embodiment. A: pillar, A ₁ ... pillar in front, A ₂ ... pillar in rear, U ₁ , U ₂
...... Top plate, 1 ... Front pipe that forms the front pillar, 2 ... Rear pipe that forms the rear pillar, 3 ... Connecting pipe that connects the front pipe and the rear pipe, 4,4
...... Front leg, 5,5 …… Rear leg, S ₁ , S ₂ …… Gas spring, 7 …… Gas spring rod, 8 …… Same cylinder, 11 …… Composes the first detent mechanism Guide plate, 12 ...... same guide cylinder, 12a ...... guide groove of the same guide cylinder, 13 ...... Morse taper shaft that constitutes the second rotation stopping mechanism, 15 ...... same Morse taper tube, 16 ...... same roll pin,
17: Same pin engaging groove, 18: Notch for mounting legs at the bottom of the column.

Claims (6)

[Claims] 1. A strut is formed by integrally forming a front pillar and a rear pillar, each of which is spaced from each other in the front-rear direction, and left and right supporting the front pillar and the rear pillar on both lower and front and rear sides of the pillar. A pair of legs are provided, a front top plate is attached to the upper end of the front column, a rear top plate is attached to the upper end of the rear column, and the front column and the rear column are each a tube body and a locking mechanism attached to this tube body. A mounting table characterized in that the height can be freely adjusted with a gas spring attached. 2. The mounting table according to claim 1, wherein the support column comprises a front column, a rear column, and a connecting member for integrally connecting the front column and the rear column in a state that they are spaced apart from each other in the front-rear direction. 3. A lower part of one of the front pillar and the rear pillar is bent,
The mounting table according to claim 1, wherein the bent end portion is connected to the other end to form a column. 4. A front projection amount l of the front leg from the center of the front column.
_1, the mounting table according to any one of claims 1 to 3 the relationship between the rearward projection amount l ₂ of the rear leg, characterized in that set to l ₁ <l ₂ from the dorsal column center. 5. The mounting table according to any one of claims 1 to 4, wherein a notch is provided in the lower end surface of the column, and the leg is attached to the lower end of the column with the leg engaged with the notch. . 6. A gas spring is attached to a pipe body with a rod end fixed in the pipe body and a cylinder moving in and out of the pipe body. Between the cylinder and the pipe body of the gas spring, a gas spring is attached to the pipe body. 6. A first detent mechanism for preventing rotation of the cylinder, and a second detent mechanism for preventing rotation of the top plate relative to the cylinder between the cylinder and the top plate, respectively. The mounting table described in any one.