JP2001037549A - Table provided with spring type extension leg - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust a table to a desired height much more easily than a table with a gear mechanism, and enable it to be disassembled and assembled by using springs as driving force to extend/contract legs to simplify the whole structure, and engaging fixing pins in plural holes bored in the extension/ contraction legs by a link mechanism. SOLUTION: In this case, a coil spring 19 is set inside an extension/ contraction leg 1, 2-(4), a U-letter pin 34a is engaged/removed with/from a hole 23a-23e bored in a slide part by a link mechanism for adjusting height of a top plate 12, and disassembling and assembling it are enabled. Since need of a power source is eliminated to simplify mechanisms, fewer troubles will occur, and as this is light and of an assemblage type, it can be easily transported. Manufacturing cost is much lower than those of other methods.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a height-adjustable table used in a welfare facility, a hospital, or the like, in which a spring is installed in an extendable leg and a plurality of small holes are drilled in the extendable leg by a link mechanism. The present invention relates to a table with a spring-type telescopic leg, in which a fixing pin is fitted into and removed from a hole so that the height of the table itself can be adjusted, and the table can be disassembled and assembled.

[0002]

2. Description of the Related Art Wheelchairs are frequently used in welfare facilities and hospitals. However, when it is necessary to arrive at a table in a wheelchair for meals, work, games, etc., a table of normal height is too low. The wheelchair user's legs cannot enter the lower space of the table. Therefore, a table having a function of preparing a special table for a wheelchair or adjusting the overall height to expand the lower space so that a leg portion of a wheelchair user can enter is used. .

[0003]

Conventionally, a table having a function of adjusting a height and expanding a lower space so that a leg portion of a wheelchair user can enter can drive expansion and contraction of the leg of the table. Depending on the method, mainly electric, gear,
There were three types of hydraulic type.

However, the electric type and the hydraulic type require a power source, the mechanism is complicated, and the whole weight becomes extremely heavy due to the motor and the pump. Furthermore, the mechanism is complicated and there are many failures, requiring a great deal of labor for maintenance, inspection and maintenance. The gear type has a simpler mechanism than the electric and hydraulic types, but it is still heavy and has the inconvenience of having to rotate the handle many times to adjust the table to the desired height. . In each of these three methods, the product itself is expensive, and the problem of price is a major factor hindering its spread.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the entire structure is simplified by using a spring as a driving force for expanding and contracting a leg. By inserting and removing fixing pins into a plurality of small holes drilled in the table, the table can be adjusted to the desired height much more easily than the gear mechanism, and it can be disassembled and assembled. It is an object of the present invention to provide a table with a spring type telescopic leg.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to the drawings. This embodiment has four telescopic legs 1, 2, 3 and 4 as shown in FIGS. 2 and 4, and the telescopic legs 1 and 2 are connected by connecting pipes 5 and 7, and the telescopic legs 3 and 4 are They are connected by connecting pipes 6 and 8, respectively. The telescopic legs 2 and 3 are connected by a connecting pipe 9, and the telescopic legs 1 and 4 are connected by a connecting pipe 10, and a top plate 12 is screwed to the connecting pipes 9 and 10.

[0007] The connecting pipe 5 is a leg main pipe 14a of the telescopic legs 1 and 2,
The connecting pipe 6 is provided integrally with the leg main pipes 14c and 14d of the telescopic legs 3 and 4. The connecting tube 7 is provided integrally with the leg upper portions 13a and 13b of the telescopic legs 1 and 2, and the connecting tube 8 is formed as leg portions 13c and 13 of the telescopic legs 3 and 4.
d is provided integrally. In addition, the connecting pipe 9 is provided with the telescopic legs 2,
3, the connecting pipe 10 is connected to the telescopic legs 1,
4 can be fitted to and detached from the leg upper portions 13a and 13d, respectively, and furthermore, a detachable connecting pipe 11 is rotatably provided at the center of the connecting pipes 5 and 6 via a link mechanism. .

Next, the structure of the telescopic legs 1, 2, 3, and 4 will be described in detail. The telescopic leg 3 has the same configuration as the telescopic leg 1, and the telescopic legs 2 and 4 are symmetrical with the telescopic leg 1. Therefore, the telescopic leg 1 will be described. As shown in FIG.
3a, leg main pipe 14a, sliding portion 15a, cover 16a
It is composed of parts.

The leg upper part 13a is a square pipe having a square cross section, and a prismatic guide bar 24a and a substantially triangular reinforcing plate 25a project from the back (see FIG. 2), and holes are formed in the lower front and rear. 20 are drilled (see FIG. 1). In addition, leg main pipe 1
Reference numeral 4a denotes a square pipe having the same cross section as the leg upper part 13a, in which a coil spring 19 is provided, a bottom plate 21 is fitted on the bottom part, and an adjuster 22 is screwed on. A stopper 18 is screwed into the upper left side surface.

The sliding portion 15a has a U-shaped cross section, the upper end is fixed to the upper leg portion 13a, the lower end is closed to form a bottom surface 17, and the bottom surface 17 is in contact with the upper end of the coil spring 19.
In addition, circular holes 23a, 23b, 23c, 23
d and 23e are drilled. 16a is the sliding portion 1
The cover 5a covers the upper leg 13a by a shaft 33 (see FIG. 2) inserted through the hole 20 (see FIG. 1).

Next, the configuration of the connecting pipes 5 and 6 will be described in detail. Since the same configuration appears only symmetrically in the connecting pipe 5 and the connecting pipe 6, the connecting pipe 5 will be described. The connecting pipe 5
The cross section is rectangular, and the left end is fixed to the right side of the leg main pipe 14a of the telescopic leg 1, and the right end is fixed to the left side of the leg main pipe 14b of the telescopic leg 2. A hole 32 is drilled in the center (see FIG. 2).
7 is rotatably inserted. The shaft 27 is connected to the connecting pipe 5.
Is fixed to the front of the link 29a on the back side of the link 29a.
A rectangular parallelepiped guide bar 28a protrudes from the back of a.
The connecting pipe 11 is fitted to the guide bar 28a.

The link pins 30 are provided at both ends of the link 29a.
A link 29b is connected to the link 29a via a link pin 30b, and a link 29c is connected to the link 29c via the link pin 30b. At the left end of the link 29b, a link pin 31a fixed to the link 29b is inserted through a slit 39 formed in the back surface of the connecting pipe 5 as shown in FIG. ing. The right end of the link 29c and the connecting pipe 5
Has a symmetrical configuration with the left end of the link 29b and the left end of the connecting pipe 5 as shown in FIG. 6A.

FIGS. 6A and 7A show the inside of the left end of the connecting pipe 5.
, A U-shaped pin 34a is provided. The pins 35a and 35b, which are linear portions of the U-shaped pin 34a, are inserted through a sliding plate 36 slidably provided in the connecting pipe 5 and a fixed plate 37 fixed to the connecting pipe 5. On this occasion,
The pin 35a and the pin 35b are fixed to the sliding plate 36,
Since it is only inserted through the fixing plate 37, the fixing plate 37
Is in a slidable state. Also, the pin 35a,
Coil springs 38a and 38b are wound around 35b between the sliding plate 36 and the fixed plate 37, respectively.

Further, a pin 31a protruding from the front left end of the link 29b is inserted through the slit 39, and
Inside, is in contact with the left side surface of the sliding plate 36. And
6A and 7A, the pin 35a is inserted through the circular hole 23b on the right side of the sliding portion 15a of the telescopic leg 1, and the pin 35
b is inserted into the circular hole 23c. The pins 35a and 35b are not the same size, and the pin 35b is slightly longer.
Although a U-shaped pin 34b is provided inside the right end of the connecting pipe 5, the structure is symmetric with the U-shaped pin 34a.

On the front side of the connecting pipe 6, a link mechanism having the same structure and symmetry as the rear side of the connecting pipe 5 is additionally provided (see FIG. 2). The configuration inside the right end of the connection pipe 6 is the same as the configuration inside the left end of the connection pipe 5, and the configuration inside the left end of the connection pipe 6 is the same as the configuration inside the right end of the connection pipe 5.

The connecting pipe 7 is a rectangular pipe having a rectangular cross section. As shown in FIGS. 1 and 2, the left end is fixed to the leg upper portion 13a of the telescopic leg 1, and the right end is fixed to the leg upper portion 13b of the telescopic leg 2. . The connecting pipe 8 is also a rectangular pipe having a rectangular cross section, and the right end is fixed to the leg upper part 13c of the telescopic leg 3 and the left end is fixed to the leg upper part 13d of the telescopic leg 4 as shown in FIG.
The connecting pipes 7 and 8 are simply reinforcing square pipes, and do not have an internal structure like the connecting pipes 5 and 6.

Next, the structure of the connecting pipes 9 and 10 will be described in detail. The connecting pipe 9 is a rectangular pipe having a rectangular cross section. As shown in FIG. 2, the front end of the connecting pipe 9 is fitted to a guide bar 24b projecting from the leg upper part 13b of the telescopic leg 2, and a reinforcing plate projecting from the leg upper part 13b. 25b. The rear end is a telescopic leg 3
Is fitted to a guide bar 24c projecting from the leg upper part 13c, and is screwed to a reinforcing plate 25c projecting from the leg upper part 13c.

The connecting pipe 10 is also a rectangular pipe having a rectangular cross section, and its front end has a leg upper portion 13 of the telescopic leg 1 as shown in FIG.
a fitted on the guide bar 24a protruding from the upper leg 1a.
It is screwed to a reinforcing plate 25a protruding from 3a. The rear end portion is fitted to a guide bar 24d projecting from the leg upper portion 13d of the telescopic leg 4, and the reinforcing plate 2 projecting from the leg upper portion 13d.
It is screwed to 5d.

As shown in FIGS. 1 and 2, the connecting pipe 11
A square pipe having a square cross section, a front end is fitted to a guide bar 28a projecting from the back of the link 29a, and a rear end is fitted to a guide bar 28b projecting from the front of the link 29d. It is rotatable in conjunction with the rotation of 26a, 26b. The connecting pipe 11 is provided with a guide bar 28.
a, 28b are not fixed, and are in a state where they can be fitted and removed.

Next, the operation of this embodiment will be described with reference to the drawings. FIG. 5A shows that the pin 35a of the U-shaped pin 34a provided at the left end of the connecting pipe 5 of this embodiment
In this state, the pin 35b is inserted into the circular hole 23b immediately below the circular hole 23a.

In this embodiment, the height of the telescopic legs 1, 2, 3, 4 can be adjusted in four stages. If the heights are assumed to be level A, level B, level C, and level D in order from the lowest, the state of FIG. 5A corresponds to the lowest level A.
In FIG. 5B, the pin 35a is inserted through the circular hole 23d and the pin 35b is inserted through the circular hole 23e, which corresponds to the highest level D. 1, 3, 4, 6, 6a, 6b, and 7
7A and FIG. 7B show a state of level C.

FIGS. 5A, 5B, 6A, 6B, 7A, and 7B show a method of changing the level in this embodiment. In FIG. 6a and FIG. 7a, the pin 35a is
The pin 35b is inserted into the circular hole 23c, and is in the level C state as described above. At this time, the handle 26a
Is a horizontal state. Now, suppose that this level C state is
It is assumed that the state is changed to the level D in FIG. 5B.

First, as shown in FIG. 6B, the handle 26b is pushed downward, and it is turned clockwise by 90 ° to stand upright.
Then, the link 2 fixed to the shaft 27 of the handle 26a
9a also rotates 90 ° clockwise and stands upright. At this time, the link pin 30a pulls the link 29b to the right, and the link pin 30b pulls the link 29c to the left.
The link pin 31a at the left end of the link 29b is drawn to the right, and the link pin 31b at the right end of the link 29c is drawn to the left.

FIGS. 7A and 7B show a main portion inside the left end of the connecting pipe 5. FIG. The link pin 31a fixed to the left end of the link 29b moves the slit 3 with the movement of the link 29b.
9 slides from the left end (FIG. 7a) to the right end (FIG. 7b).
The link pin 31a is inserted into the slit 39 and the connecting pipe 5
The sliding plate 36 is slid to the right because it is protruded inside and is in contact with the left side surface of the sliding plate 36.

The pins 35a and 35b are inserted through the sliding plate 36 in a fixed state, and are inserted through the fixed plate 37 in a non-fixed state.
With the sliding part 15a, the tip of which has been inserted.
Are removed from the circular holes 23b and 23c. At this time, pin 3
Coil springs 38a, 38 wound around 5a, 35b
b is compressed between the sliding plate 36 and the fixed plate 37.

The pins 35a, 35b are circular holes 23b, 23c.
When the sliding portion 15a is further removed, the sliding portion 15a fixed at the position (level C) in FIG. 7a can be freely slid inside the leg main pipe 14a. However, the bottom plate 1 is provided on the sliding portion 15a.
Since the pressure of the coil spring 19 is applied upward through the boss 7 (see FIG. 1), in a free state, the sliding portion 15a slides upward inside the leg main pipe 14a and is fixed to the sliding portion 15a. The upper leg portion 13a is raised, and the top plate 12 is further raised.

At this time, it is desired to fix the top plate 12 at a higher level D. Therefore, while holding the handle 26a in a vertical state, the lifting of the top plate 12 is controlled by applying pressure from above to the pin 3
The level is adjusted to a position where 5a can be inserted into the circular hole 23d and the pin 35b can be inserted into the circular hole 23e. After level adjustment,
The handle 26a held in the vertical state is rotated 90 ° counterclockwise to return to the horizontal state.

When the handle 26a returns to the horizontal state, the link 29a also returns to the horizontal state, the link 29b is pushed to the left via the link pin 30a, and the link pin 31a slides in the slit 39 to the left. At this time, since the pressing of the coil springs 38a and 38b is acting on the sliding plate 36, as the link pin 31a moves to the left, the sliding plate 36 also slides in the connecting pipe 5 to the left. 5b, the pin 35a is inserted into the circular hole 23d, and the pin 35b is inserted into the circular hole 23e.

By the above process, the sliding portion 15a is fixed at the level D, the leg upper portion 13a fixed to the sliding portion 15a is also fixed at the level D, and the telescopic leg 1 is fixed at the level D. At the right end of the connecting pipe 5, the link 29c and the link pin 31b are operated by operating the handle 26a.
, The same operation is performed symmetrically, and the telescopic leg 2 is fixed at the level D similarly to the telescopic leg 1.

In addition, with respect to the telescopic legs 3, 4, the rotational force of the handle 26a is transmitted to the handle 26b through the connecting pipe 11, and the same operation as that inside the connecting pipe 5 is simultaneously symmetrical inside the connecting pipe 6. The telescopic legs 3 and 4 are also fixed at the level D similarly to the telescopic legs 1 and 2.
In this manner, all of the telescopic legs 1, 2, 3, and 4 are at level D.
And the top plate 12 is fixed at the level D as a result.

As can be seen, the handles 26a, 26
While holding b in an upright state, the top plate 12 is pressed by hand to adjust it to a desired level while antagonizing the repulsive force of the coil spring 19 for pushing up the top plate 12.
The height of the top plate 12 can be easily adjusted to a desired level and fixed simply by returning the 6a and 26b to the horizontal state.

At this time, the operator operates the handles 26a, 26b
Is operated simultaneously with both hands, so that the operation inside the connecting pipes 5 and 6 is performed extremely smoothly. Also, connecting pipes 9, 10,
In the embodiment in which the extension of 11 is longer than a certain length, two workers are in charge of operating the handles 26a and 26b one by one, and cooperate with each other.

In FIGS. 5A and 5B, reference numeral 18 denotes a stopper screwed to the left side surface of the leg main pipe 14a and protruding inside the leg main pipe 14a. When the sliding portion 15a is in a free state, the sliding portion 15a is pushed upward by the repulsive force of the coil spring 19 and rises as described above. At this time, the sliding portion 15a
If it rises more than necessary, it may come off from the upper end of the leg main pipe 14a, so the bottom plate 17 of the sliding part 15a is locked to the stopper 18 to prevent the sliding part 15a from rising more than necessary. I do.

5A, 5B, 7A and 7B, the pin 35b is slightly longer than the pin 35a. This is because the pin 35b is first inserted into the circular hole 23e (level D). In this case, when the pin 35a is inserted into the circular hole 23d using this as a guide, the insertion is performed smoothly. Therefore, conversely, even if the pin 35a is longer than the pin 35b, the result is the same.

In this embodiment, as shown in FIG. 8, the front part 40 composed of the telescopic legs 1 and 2 and the connecting pipes 5 and 7, and the telescopic legs 3 and It can be disassembled into a total of five parts of the rear side part 41 constituted by 4 and the connecting pipes 6 and 8, and the connecting pipes 9, 10 and 11.

When assembling the present embodiment, the connecting pipe 10 is connected to the guide bar 24a protruding from the back of the telescopic leg 1 and the guide bar 24d protruding from the front of the telescopic leg 4, and the connecting leg 10
The connecting pipe 9 is further connected to a guide bar 24b protruding from the back surface of the
The connecting pipe 11 is simultaneously fitted to a guide bar 28a protruding from the back of the link 29a and a guide bar 28b protruding from the front of the link 29d.

Further, as shown in FIG. 2, the reinforcing plate 25a
The connecting pipe 10 and the guide bar 24a are screwed to the reinforcing plate 25b, the connecting pipe 9 and the guide bar 24b are screwed to the reinforcing plate 25b, the connecting pipe 9 and the guide bar 24c are screwed to the reinforcing plate 25c, and connected to the reinforcing plate 25d. The tube 10 and the guide bar 24d are screwed. As a result, the entire embodiment has an extremely stable structure. When disassembling, the above process is reversed.

As an embodiment of the present invention, the legs 1, 2, 3,
4 leg main pipes 14a, 14b, 14c, 14d and sliding portion 1
An embodiment in which bearing balls are interposed between 5a, 15b, 15c and 15d will be described. 9a and 9b are cross-sectional views showing a configuration of a main part of the leg 1 of the present embodiment. Sliding part 15a
Holes 42a, 42b on the front side and holes 42c, 4
2d, a bearing ball 43a is inserted into the hole 42a, and a hole 4a is inserted into the hole 42a.
A bearing ball 43b is placed in the hole 2c, a bearing ball 43c is placed in the hole 42c, and a bearing ball 43d is placed in the hole 42d so as to be freely movable.

Since the bearing balls 43a to 43d are in contact with the leg main pipe 14a, they are rotated by the vertical movement of the sliding part 15a, and the vertical movement of the sliding part 15a in the leg main pipe 14a is smoothed out. This function stabilizes the vertical movement and stabilizes the sliding portion 15a in the leg main pipe 14a even at rest. Also, as shown in FIGS.
The bearings 2a and 42b are formed in a truncated cone shape whose cross-sectional area increases toward the front side, and the holes 42c and 42d are formed in a truncated cone shape whose cross-sectional area increases toward the back side. The balls 43a, 43b, 43c, 43d do not fall off. Note that the configuration described in detail above is for leg 2,
The same applies to 3 and 4. This embodiment has the same configuration as the above-described embodiment except that a bearing ball is interposed.

Further, as one embodiment of the present invention,
An embodiment in which there are four circular holes formed in the sliding portions 15a, 15b, 15c, and 15d of 2, 3, and 4 will be described in detail.
11a and 11b show a main part of the leg 1 of this embodiment.
In this embodiment, there are four circular holes 23a, 23b, 23d, and 23e formed in the right side surface of the sliding portion 15a, and lacks the circular hole 23c in the above-described embodiment. Circular hole 23a,
The positions of 23b, 23d and 23e are the same as those in the above-described embodiment. The configuration is the same for the legs 2, 3, and 4.

In this embodiment, as shown in FIG.
The state where the pin 35a is inserted into the pin 3a and the pin 35b is inserted into the hole 23b is the level A (lowest level) in the above-described embodiment, and the pin 35a is inserted into the hole 23d as shown in FIG. The state in which the pins 35b are respectively inserted through 23e is the level D (highest level) in the above-described embodiment. In this embodiment, there are only two levels, and the level adjustment is easy. still,
It is of course possible to incorporate the bearing ball in the above-described embodiment into this embodiment.

[0042]

The effects of the present invention are as described below. No power source such as an electric type or a hydraulic type is required, and the mechanism is simple. The mechanism is simpler than the gear type. As a result, it is possible to reduce the number of failures and reduce the weight. Therefore, it is easy to handle and transportable.

If disassembly / assembly is possible as in the above-described embodiment, transportation becomes easier. Since the mechanism is simple, the manufacturing cost can be reduced as compared with other systems. (A few to one of other methods
About 1/0)

As described above, the table with spring-type telescopic legs according to the present invention has excellent features not found in conventional products of the same kind (electric type, hydraulic type, gear type), With the progress of the society and the welfare society, it is expected that the table will be widely used as a table that can be freely used in a wheelchair and can easily be adjusted in height in hospitals and welfare facilities.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of a table with spring-type telescopic legs according to the present invention.

FIG. 2 is a plan view of one embodiment of a table with a spring-type telescopic leg according to the present invention.

FIG. 3 is a left side view of an embodiment of the table with spring-type telescopic legs according to the present invention.

FIG. 4 is an external perspective view of one embodiment of a table with spring-type telescopic legs according to the present invention.

FIG. 5A is a front view of an essential part of the embodiment of the table with spring-type telescopic legs according to the present invention, in which a part of the table is omitted. b is a front view of a main part of the embodiment of the table with spring-type telescopic legs according to the present invention, with a part of the table omitted.

FIG. 6A is a front view of a main part of a table with a spring-type telescopic leg according to an embodiment of the present invention, in which a part of the table is omitted. b is a front view of a main part of the embodiment of the table with spring-type telescopic legs according to the present invention, with a part of the table omitted.

FIG. 7A is a front view of a main part of a table with a spring-type telescopic leg according to an embodiment of the present invention, in which a part of the table is omitted. b is a front view of a main part of the embodiment of the table with spring-type telescopic legs according to the present invention, with a part of the table omitted.

FIG. 8 is a reference external perspective view in which one embodiment of the table with spring-type telescopic legs of the present invention is disassembled into parts.

FIG. 9A is a longitudinal sectional view of a main part of an embodiment of a table with a spring type extendable leg according to the present invention. b It is a longitudinal cross-sectional view of the main part of one Example of the table with a spring type expansion-contraction leg of this invention.

FIG. 10A is a longitudinal sectional view of a main part of an embodiment of a table with a spring-type extendable leg according to the present invention. b It is a longitudinal cross-sectional view of the main part of one Example of the table with a spring type expansion-contraction leg of this invention. c It is a longitudinal cross-sectional view of the main part of one Example of the table with a spring type expansion-contraction leg of this invention. d is a longitudinal sectional view of a main part of one embodiment of the table with spring-type telescopic legs according to the present invention.

FIG. 11A is a front view of a main part of an embodiment of a table with spring-type telescopic legs according to the present invention, in which a part of the table is omitted. b is a front view of a main part of the embodiment of the table with spring-type telescopic legs according to the present invention, with a part of the table omitted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Telescopic leg 2 Telescopic leg 3 Telescopic leg 4 Telescopic leg 5 Connecting pipe 6 Connecting pipe 7 Connecting pipe 8 Connecting pipe 9 Connecting pipe 10 Connecting pipe 11 Connecting pipe 12 Top plate 13a Leg upper 13b Leg upper 13c Leg upper 13d Leg upper 14a Leg Main pipe 14b Leg main pipe 14c Leg main pipe 14d Leg main pipe 15a Sliding part 15b Sliding part 15c Sliding part 15d Sliding part 16a Cover 16b Cover 16c Cover 16d Cover 17 Bottom plate 18 Stopper 19 Coil spring 20 hole 21 Bottom plate 22 Adjuster 23a Circle hole 23b circular hole 23c circular hole 23d circular hole 23e circular hole 24a guide bar 24b guide bar 24c guide bar 24d guide bar 25a reinforcement plate 25b reinforcement plate 25c reinforcement plate 25d reinforcement plate 26a handle 26b handle 27 axis 28a guide bar 28b guide bar 29a link 29b link 29c link 29d link 30a link pin 30b link pin 31a link pin 31b link pin 32 hole 33 axis 34a U-shaped pin 34b U-shaped Pin 35a Pin 35b Pin 36 Sliding plate 37 Fixing plate 38a Coil spring 38b Coil spring 39 Slit 40 Front part 41 Back part 42a Hole 42b Hole 42c Hole 42d Hole 43a Bearing ball 43b Bearing ball 43c Bearing ball 43d Bearing ball

Claims (3)

[Claims] The present invention has an even number of telescopic legs with springs installed therein, and two telescopic legs are connected to each other by a connecting pipe, and are drilled in the telescopic legs using a link mechanism attached to the connecting pipe. A spring-type table with telescopic legs, wherein the height of the telescopic legs is adjustable by fitting and removing fixing pins in a plurality of small holes. 2. A link mechanism attached to a connecting pipe is connected to each other by a rotatable connecting pipe, and all telescopic legs are simultaneously operated in the same direction and by the same size only by operating one link mechanism. 2. The table with spring-type telescopic legs according to claim 1, wherein the table is extendable. 3. A disassembly / assembly method comprising assembling a unit in which two extendable legs are connected to each other by a connecting pipe, and assembling the plurality of parts by fitting them into the connecting pipe. And a table with spring-type telescopic legs according to claim 2.