KR101982262B1 - Chair rotation apparatus for movable type stool table - Google Patents

Abstract

The present invention relates to a rotation device for rotating a chair when folding or unfolding each chair in a mobile stool table integrally having multiple chairs. According to the present invention, the rotation device is formed as combination of an upper moving rotation shaft on a chair and a lower fixing rotation shaft on a table and vertically moves to be engaged when the chair is folded or unfolded. The rotation device has a new shape of controlling the rotation of the chair by using motion properties of the upper moving rotation shaft receiving elastic support of a spring. The rotation device can stably maintain an unfolded state of the chair. The rotation device can be simply controlled and handled so that the chair is automatically folded by a restitution force of the spring at same time. Also, the rotation device can improve convenience of use. Also, the rotation device can control speed when folding or unfolding the chair by being applied with a pipe for adjusting the elasticity of the spring. Thus, the rotation device for a chair of a movable stool table can improve the convenience of use.

Description

Chair rotation device of movable stool table {CHAIR ROTATION APPARATUS FOR MOVABLE TYPE STOOL TABLE}

The present invention relates to a chair rotating device of a movable stool table, and more particularly, to an apparatus for rotating a chair when each chair is extended or folded in a movable stool table in which a plurality of chairs are integrally provided.

In general, a lunch place, a rest area, a cafeteria and the like are provided with a mobile stool table and chairs so that the user can sample food or place something on the table to rest.

In general, the table and the chair are mostly separated from each other, which causes inconveniences in rearing the chair after use and occupying the passage of people, causing inconvenience in traffic.

In view of this point, in recent years, a chair-integrated table that integrates a table and a chair to improve space use efficiency and solves a problem of organizing and managing is being used.

For example, Korean Patent No. 10-1104787 discloses "a table integrally formed with a chair", and Korean Patent No. 10-1467702 discloses a "foldable chair integrated table provided with a connection support", Korean Patent No. 10-1476547 discloses a folding chair integrated table.

However, since the conventional tables as described above have a structure in which a conventional chair integrally formed with a chair leg and a seat plate is rotatably coupled to a prop so as to support the table with respect to the floor, the chair leg is rotated when the chair assembly is rotated. There is a problem that the chair legs and the floor surface is damaged by friction with, and the support pillar is flowed when the chair assembly is rotated, the stability is reduced, and there are a lot of parts in contact with the floor surface such as table legs and chair legs, such as floor cleaning There are a lot of inconveniences when working.

Korean Patent Registration No. 10-1484975 Korea Patent Registration 10-1536339 Korea Patent Registration 10-1633915

Accordingly, the present invention has been made in view of the above, and made of a combination of the chair-side upper rotational rotation axis and the table-side lower fixed rotational axis to move up and down in conjunction with the chair when the chair is unfolded and to support the elasticity of the spring By implementing a new type of chair rotating device that controls the rotation of the chair by using the movement characteristics of the upper movable rotary shaft, the chair can be unfolded by the spring restoring force while maintaining the unfolded state of the chair stably. It is an object of the present invention to provide a chair rotating device of a movable stool table that can be easily operated and handled and improved in convenience.

In order to achieve the above object, the chair rotating device of the movable stool table provided in the present invention has the following features.

The chair rotating device of the movable stool table includes an upper movable rotary shaft installed inside the housing connected to the chair side, a lower fixed rotary shaft installed on the frame fixing bracket connected to the table side, and an upper movable installed inside the housing. A spring that is elastically supporting the rotary shaft and is compressed when the upper movable rotary shaft is raised and restored when the upper movable rotary shaft is lowered, and coupled to the frame fixing bracket while being disposed along the central axis of the upper movable rotary shaft and the lower fixed rotary shaft. It consists of a structure including a core to be installed.

In particular, the upper movable rotary shaft is formed of a disk-shaped body having an anti-rotation protrusion and a spring support protrusion at the upper end and a cylindrical support having a spiral slide inclined surface and a locking end while being formed on the bottom of the body, the lower fixing The rotating shaft includes a plate-shaped body fixed to the frame fixing bracket side and a cylindrical support having a spiral slide slope and a locking jaw on the inner circumferential surface while being formed on the upper surface of the body.

Thus, the support of the upper movable rotary shaft is coupled in a coaxial structure in the support of the lower fixed rotary shaft, the upper movable rotary shaft that rotates with the chair when the chair is extended or folded, while moving up and down through the sliding guide between the slide slopes As the position is regulated or released through the binding or separation action between the stage and the hanging jaw, if the chair is rotated more than a certain angle when the chair is unfolded, the spring can be pressed to maintain the unfolded state of the chair. If you push the chair a little, the spring can be restored by itself by restoring the spring.

Here, the chair rotating device of the table is fitted around the upper end of the core while the upper end is supported by the core head portion and the lower end is installed in a structure that is supported on the upper end of the spring through the washer, according to the adjustment of the fastening state of the core Up and down position adjustment may further include a speed control pipe for adjusting the elastic force of the spring.

In addition, the chair rotating device of the table is fixed by a housing cap coupled to the upper end of the housing while having a bearing seating groove, and a bearing fixing bushing inserted into the bearing seating groove of the housing cap and simultaneously fastened onto a frame fixing bracket. It may further include an upper bearing installed in the structure, and a lower bearing installed in a structure interposed between the housing and the lower fixed rotation shaft.

The chair rotating device of the movable stool table provided by the present invention has the following effects.

First, by providing a new door rotating device consisting of a combination of the chair-side upper movement rotation axis and the table-side lower fixed rotation axis and the spring to provide compression and restoring force in accordance with the rotation operation of the chair when the chair is extended or folded, When the chair is fully unfolded, it is possible to maintain the unfolded state of the chair by the force of the spring, and it is easy to operate and handle the chair. There is an effect that can improve the convenience.

Second, the chair rotational operation to assist the folding state of the chair and to control the unfolded state of the chair while the upper movable rotary shaft installed on the chair side moves up and down relative to the lower fixed rotary shaft fixed to the table side By applying the mechanism, it is possible to reduce the manufacturing cost of the chair rotator according to the minimum number of parts and the simple structure, and to simplify the assembly work, to reduce the volume and weight of the chair rotator, and to facilitate maintenance. It can be effective.

Third, it is possible to secure the stability of the rotational movement of the chair by applying a core that is formed in the form of a long bolt and acts as a central axis to stably hold the center of rotation of the chair. By applying a spring adjustment pipe that can adjust the elasticity of the chair when the chair is expanded or folded, such as adjusting the speed can be further enhanced the ease of use.

1 and 2 is a cross-sectional view showing a chair rotating device of the movable stool table according to an embodiment of the present invention
3 to 5 is a cross-sectional view showing a chair rotating device of the movable stool table according to an embodiment of the present invention
FIG. 6 is a plan view illustrating a state in which a chair is expanded or folded in a chair rotating apparatus of a mobile stool table according to an embodiment of the present invention; FIG.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 are cross-sectional views showing a chair rotating device of the movable stool table according to an embodiment of the present invention, Figures 3 to 5 are cross-sectional views showing a chair rotating device of the movable stool table according to an embodiment of the present invention. to be.

As shown in Figures 1 to 5, the chair rotating device of the movable stool table to elastically support the chair side upper movable rotary shaft 11, the table side lower fixed rotary shaft 13, and the upper movable rotary shaft (11) By adopting the combination configuration of the spring 14, it is possible to maintain the extended state of the chair when the chair is unfolded or folded, it is made of a structure so that the chair can be fully folded automatically.

To this end, the chair rotating device of the movable stool table is installed on the chair side and includes an upper movement rotating shaft 11 that is movable in the vertical direction as well as rotating with the chair when the chair is opened or folded.

The upper movement rotating shaft 11 is composed of a disk-shaped body (11a) and the hollow cylindrical support (11b), the support 11b can be integrally formed at the center of the bottom surface of the body (11a). .

The upper movement rotating shaft 11 is the inside of the housing 10 that is connected to the chair frame (reference 110 in FIG. 5) of the chair (reference numeral 100 in FIG. 5) by using the body 11a, that is, circular It is inserted into the inside of the housing 10 in the form of a tube is installed in a structure that can be moved up and down, the support 11b of the upper movable rotary shaft 11 is installed so that the support 13b of the lower fixed rotary shaft 13 It can be inserted into the coaxial structure within.

At this time, the upper surface of the body (11a) is formed with a spring preventing projection (17) toward the center at the same time the rotation preventing projection (16) is formed to the outer side.

Here, the anti-rotation protrusion 16 consists of a pair formed in a position facing each other is fitted to the protrusion rail groove 28 formed on the inner circumferential surface of the housing 10, accordingly the upper movable rotary shaft 11 Rotation with the housing 10 including the chair 100 and the chair frame 110 is prevented from being rotated by itself by the anti-rotation protrusion 16 caught by the protrusion rail groove 28 of the housing 10. It can be moved up and down.

In addition, the spring support protrusion 17 is fitted into the lower end of the spring 14, and thus the spring 14 is supported by the spring support protrusion 17 so that the lower end is maintained without any flow. It becomes possible.

In particular, the slide inclined surface (18a) is formed on the support (11b) of the upper moving rotary shaft 11 along the spiral trajectory over a section of approximately 180 degrees, the slide inclined surface at the lower end of the slide inclined surface (18a) The engaging end 19 which consists of a horizontal plane is formed in contact with 18a.

Here, the slide inclined surface (18a) is in contact with the slide inclined surface (18b) formed on the support (13b) of the lower movable fixed shaft 13 to receive a sliding guide and at this time up and down the slide inclined surface (18b) The slide end 19 can be slid to the end thereof when the slide inclined surface 18a of the upper moving rotary shaft 11 is moved up while being guided by the slide inclined surface 18b of the lower fixed rotary shaft 13 side. Going up (at the rising limit position) can be caught in a state of being caught on the locking projection 20 formed on the support (11b) of the lower fixed rotary shaft (13).

In addition, the chair rotator of the movable stool table includes a housing 10 as a means that serves as a central axis of rotation of the chair 100 when the chair 100 is extended or folded.

In the form of a circular tube of the housing 10, it is coupled to the chair frame 110 of the chair 100 to be rotated about its own axis when the chair 100 is extended or folded.

The upper moving rotary shaft 11, the lower fixed rotary shaft 13, and the spring 14 is accommodated in the housing 10, the inner circumferential surface of the housing 10 at this time for preventing rotation in the upper movable rotary shaft (11) In order to guide the protrusions 16, a pair of protrusion rail grooves 28 are disposed to face each other and face each other.

In addition, a housing cap 24 having a bearing seating groove 23 is coupled to an upper end of the housing 10, whereby the housing 10 is an upper bearing 26 inserted into the bearing seating groove 23. It is possible to be installed in a structure in which the upper and lower ends are supported by the lower bearing 27 interposed between the lower fixed rotary shaft 13.

Here, the upper bearing 26 is inserted and seated in the bearing seating groove 23 of the housing cap 24, and in the seated state of the bearing fixing bushing 25, which is penetrated to the upper plate of the frame fixing bracket 12. It can be installed in a structure that is fixed while being pressed by the lower end.

In addition, the chair rotating device of the movable stool table is installed on the table side to support the upper movable rotary shaft 11 that rotates with the chair 100 and induces the movement of the upper movable rotary shaft 11 moving up and down. It comprises a lower fixed rotary shaft 13 by means.

The lower fixed rotating shaft 13 is composed of a disc-shaped body 13a and a hollow cylindrical support 13b, and the support 13b is integrally formed at the bottom of the body 13a. .

The lower fixed rotating shaft 13 can be installed in a structure supported on the table side using the body (13a).

For example, the frame fixing bracket 12 bent in a "c" shape is coupled to the table frame (reference numeral 130 in FIG. 5) of the table (reference numeral 120 in FIG. 5), and the frame fixing bracket ( 12 is coupled to the structure that is fastened while the body (13a) of the lower and lower rotary shaft 13 is mounted on the upper surface of the lower plate, the lower fixed rotary shaft 13 is the frame fixing bracket 12 of the table side through the body (13a) It can be installed in a structure supported on.

Here, the upper surface of the body 13a of the lower fixed rotary shaft 13 faces the lower end of the housing 10 with the lower bearing 27 therebetween, and the support 13b is inserted into the housing 10. Can be located.

In particular, the slide inclined surface (18b) is formed on the support (13b) of the lower fixed rotary shaft 13 along the spiral trajectory over a section of approximately 180 degrees, the slide inclined surface at the upper end of the slide inclined surface (18b) formed in this way While engaging the 18b is formed a locking projection 20 made of a horizontal plane.

Here, the slide inclined surface 18b is in contact with the slide inclined surface 18a at this time while facing the slide inclined surface 18a formed on the support 11b of the upper movement rotating shaft 11. The slide inclined surface 18a on the upper moving rotary shaft 11 side can receive a slide guide while riding the slide inclined surface 18b on the lower fixed rotary shaft 13 side, and thus, the slide guide between the slide inclined surfaces 18a and 18b. By operation, the upper movement rotating shaft 11 can be moved while sliding up and down.

Then, the locking jaw (20) is at the end of the slide inclined surface (18a) of the upper movable rotary shaft 11 is raised up while being guided by the slide inclined surface (18b) of the lower fixed rotary shaft (13) (up limit position) In) to be able to support the locking end (19) of the upper moving rotary shaft (11).

Here, a locking surface 29 in the form of a vertical wall is formed right next to the locking projection 20 formed on the support 13b of the lower fixed rotation shaft 13.

Accordingly, the slide inclined surface 18a of the upper moving rotary shaft 11 is raised upward while being guided by the slide inclined surface 18b on the lower fixed rotating shaft 13 side, and then the locking end 19 of the upper movable rotating shaft 11 is engaged. At the time when it climbs on the locking step 20 of the lower fixed rotary shaft 13, the lower end of the upper movable rotary shaft 11, that is, the side end of the locking end 19, the locking surface 29 of the lower fixed rotary shaft 13. By being caught in, the upper movement rotating shaft 11 is no longer rotated, and eventually the chair 100 can be in a fully deployed state.

That is, normally, when the chair 100 is unfolded, the locking end 19 is not extended to one point to allow the locking jaw 20 to rise, but is used in a state in which it is extended to a point within the contact section between the slide slopes 18a and 18b. When the chair 100 is not in use when the chair 100 is in the inside of the table 120, it is difficult to clean the chair 100, so when the chair 100 is fully opened and fixed outside the table, the cleaning can be easily performed as much. Will be.

In addition, the chair rotating device of the movable stool table includes a spring 14 as a means for elastically supporting the upper movement rotating shaft 11 on the chair side.

The spring 14 is a kind of coil spring, which is located inside the housing 10 and is located between the upper washer 21 installed in the housing 10 and the body 11a of the lower upper movement rotating shaft 11. The upper and lower ends are installed in a structure that is supported.

At this time, the lower end of the spring 14 can be positioned while being fitted to the outside of the spring support protrusion 17 formed on the body (11a) of the upper movable rotary shaft (11).

The spring 14 installed in this way is compressed at the time of upward movement of the top movement rotary shaft 11, and is able to push the top movement rotary shaft 11 while restoring (expanding) during the downward movement of the top movement rotary shaft 11. .

Accordingly, the friction force between the locking end 19 of the upper moving rotary shaft 11 and the locking jaw 20 of the lower fixed rotary shaft 13 is acted upon by the compression force exerted by the spring when the spring 14 is compressed. The unfolded state of the 100 can be fixed (maintained) and the slide inclined surfaces 18a and 18b are pushed down by the upward movement shaft 11 by the pushing force exerted by the spring when the spring 14 is restored. As the sliding action between) occurs, the chair 100 can be automatically folded while rotating.

The chair rotator of the movable stool table also includes a core 15 which serves to center the overall position with respect to the rotation of the chair.

The core 15 has a long bolt shape including a nut and is installed in a structure supported by a fastening structure on the frame fixing bracket 12 on the table side.

For example, the core 15 is disposed along the center axis of the upper moving rotary shaft 11 and the lower fixed rotary shaft 13, the bearing fixing bushing is fastened to the upper plate, substantially the upper plate of the frame fixing bracket 12 At the same time as penetrating the 25 and penetrates the lower plate of the frame fixing bracket 12, in this state the nut is fastened to the lower end of the core 15 protruding to the lower plate bottom surface of the frame fixing bracket 12, 15 may be installed in a structure supported on the frame fixing bracket 12.

Thus, the core 15 having a long bolt shape on the rotating part of the chair 100 serves as a central axis, so that the center of the chair can be stably maintained when the chair is rotated. Can be secured.

In addition, the chair rotating device of the table includes a speed adjusting pipe 22 as a means for adjusting the unfolding speed and the folding speed of the chair 100.

The speed adjusting pipe 22 sequentially penetrates through the bearing fixing bushing 25, the upper bearing 26, and the bearing cap 24, which are fastened to the upper plate of the frame fixing bracket 12, of the core 15. While being fitted around the upper end, the upper end is supported by the core head (bolt head) and the lower end can be installed in a structure supported by the upper end of the spring 14 via the washer 21.

Accordingly, when the nut fastened to the lower end of the core 15 is tightened, the core 15 moves downward, and the speed adjusting pipe 22 also moves downward, so that the spring 14 is moved. As the spring elastic force is relatively strong while being compressed, the unfolding or folding speed of the chair 100 can be relatively fast.

On the contrary, when the nut which is fastened to the lower end of the core 15 is loosened, the core 15 moves upward and the speed adjusting pipe 22 also moves upward. As a result, the spring 14 As the spring elastic force is relatively weakened as it is expanded, the unfolding or folding speed of the chair 100 may be relatively slow.

As a result, the compression state of the spring 14 can be set variably according to the change of the position of the speed adjusting pipe 22 at this time, and the elastic force of the spring 14 can also be adjusted, Unfolding or folding speed can be adjusted accordingly.

Therefore, the operation state of the chair rotating device configured as described above will be described with reference to FIGS. 3 to 5 and 6.

As shown in FIG. 3, the unused state of the chair 100, that is, the state in which the chair 100 is folded is shown.

That is, the slide inclined surface 18a of the upper movable rotary shaft 11 on the chair 100 side and the slide inclined surface 18b of the lower fixed rotary shaft 13 on the table 120 side overlap with some inclined sections. It can be positioned facing each other, the top movement rotating shaft 11 is maintained in a downwardly positioned state, the spring 14 is maintained in a restored (expanded) state, respectively.

As shown in FIG. 4, the use state of the chair 100, that is, the unfolded state of the chair 100 is shown here.

That is, when the user unfolds the chair 100, the chair 100 rotates and the upper movement rotating shaft 11 also rotates at an angle and a direction corresponding to the degree of the chair unfolding, and at the same time, the upper movement rotating shaft Since the slide inclined surface 18a of (11) slides up on the slide inclined surface 11b of the lower fixed rotary shaft 13, the upper rotary shaft 11 at this time also slides upward while compressing the spring 14. do.

Next, in the process of unfolding the chair 100, the upper movement rotating shaft 11 is rotated and raised while receiving a sliding guide between the slide inclined surfaces 18a and 18b, and the user unfolds the chair 100 by an appropriate angle for the user to sit down. When sitting in the chair 100 as it is in the state, the movement of the chair 100 can be fixed by the weight of the user at this time, the lower end of the slide inclined surface (18a) of the upper movable rotary shaft 11 at the bottom It can be located at an appropriate point in the section on the slide inclined surface (18b) of the fixed rotary shaft (13).

On the other hand, when using the chair 100 after folding the chair 100, when the user stands up from the chair 100, from this time the restoring force of the spring 14 is acting to push down the upper rotary shaft 11, As a result, the upper movement rotating shaft 11 is rotated in the descending and folding directions of the chair while receiving the sliding guide between the slide inclined surfaces 18a and 18b, so that the chair 100 also rotates in the folding direction, and eventually the chair 100 Not only does not take any force when folding the chair, the chair 100 is automatically completely by the restoring force of the spring 14 and the rotational force of the upper movable rotary shaft 11 without the user having to fold the chair 100 Can be folded.

As shown in Figure 5, here shows a state in which the chair 100 is fully extended outward.

That is, when the user unfolds the chair 100, the chair 100 rotates and the upper movement rotating shaft 11 also rotates at an angle and a direction corresponding to the degree of the chair unfolding, and at the same time, the upper movement rotating shaft Since the slide inclined surface 18a of (11) slides up on the slide inclined surface 11b of the lower fixed rotary shaft 13, the upper rotary shaft 11 at this time also slides upward while compressing the spring 14. do.

Next, in the process of unfolding the chair 100, the upper movement rotating shaft 11 is rotated and raised while receiving a sliding guide between the slide inclined surfaces 18a and 18b, and the locking end 19 at the bottom of the slide inclined surface 18a is moved. On the upper side of the slide inclined surface (18b) is to get on the locking projection 20, at the same time the side end of the locking end 19 of the upper movable rotary shaft 11 to the locking surface 29 of the lower fixed rotary shaft (13) By being caught, the upper movement rotating shaft 11 is no longer rotated, and eventually the chair 100 can be fully deployed.

At this time, the friction force acts between the upper movable rotary shaft 11 and the lower fixed rotary shaft 13 by the compressive force of the spring 14 in the unfolded state of the chair 100, to regulate the rotation of the upper movable rotary shaft 11 As a result, the unfolded state of the chair 100 may be stably maintained unless the user artificially grounds the chair 100.

Therefore, the cleaning is performed in a state where the chair 100 is completely pulled out from the bottom of the table 120 as described above, so that cleaning can be performed easily and easily.

On the other hand, when folding the chair 100 after the cleaning, if the user slightly pushes the chair 100 in the folding direction, the locking end 19 of the upper movable rotary shaft 11 is the locking jaw of the lower fixed rotary shaft 13 (20) is removed, from this time the restoring force of the spring (14) acts to push the upper rotary shaft 11 down, as a result the upper rotary shaft 11 is a sliding guide between the slide inclined surfaces (18a, 18b) Received while being rotated in the down and chair folding direction, the chair 100 at this time also rotates in the folding direction, and as a result, not only less force when folding the chair 100, the user lifts the chair 100 The chair 100 can be completely folded automatically by the restoring force of the spring 14 and the rotational force of the upper movable rotating shaft 11 without folding labor.

Thus, in the present invention, by providing a new type of chair rotation apparatus applying a combination of the upper movable rotary shaft and the spring and the lower fixed rotary shaft installed on the chair side, it is possible to stably maintain the unfolded state of the chair, Also, if you push the chair a little when you fold it, you can improve the convenience of using the chair, such that the chair can be folded by itself by the force of the spring.

10: housing
11: upper moving rotary shaft
11a: body
11b: support
12: frame fixing bracket
13: lower fixed rotation axis
13a: body
13b: support
14: spring
15: core
16: anti-rotation protrusion
17: spring support projection
18a, 18b: slide slope
19: hanging end
20: jamming jaw
21: washer
22: speed control pipe
23: bearing seating groove
24: housing cap
25: bushing for bearing fixing
26: upper bearing
27: lower bearing
28: protrusion rail groove
29: locking surface

Claims (3)

A housing 10 which is coupled to the chair side and rotated around its own axis when the chair is opened or folded and installed in a structure in which the upper and lower ends are supported by the upper bearing 26 and the lower bearing 27; An upper movable rotary shaft 11 installed inside the housing 10 connected to the side, a lower fixed rotary shaft 13 installed on the frame fixing bracket 12 connected to the table side, and an interior of the housing 10. A spring 14 which is installed at the upper movement rotary shaft 11 and is resiliently compressed when the upper movement rotary shaft 11 rises and is restored when the upper movement rotary shaft 11 descends, and the upper movement rotary shaft 11. And a core 15 disposed along a center axis of the lower fixed rotating shaft 13 and installed on the frame fixing bracket 12.
The upper moving rotary shaft 11 is formed on a disk-shaped body 11a having a rotation preventing protrusion 16 and a spring supporting protrusion 17 at the upper end and a bottom surface of the body 11a, and a spiral slide inclined surface 18a. ) And a cylindrical support (11b) having a locking end 19, the lower fixed rotary shaft 13 is a plate-shaped body (13a) and the body (13a) fixed to the frame fixing bracket 12 side And a cylindrical support 13b having a helical slide inclined surface 18b and a locking jaw 20 on an inner circumferential surface thereof, the support 11b of the upper movement rotating shaft 11 is a lower fixed rotating shaft. Coaxially coupled within the support (13) of the (13), the upper movement rotating shaft 11 that rotates with the chair when the chair is extended or folded is moved up and down through the sliding guide between the slide slopes (18a, 18b) At the same time, the binding between the locking end 19 and the locking step 20 Since the position is regulated or released through the separating action, if the chair is rotated more than a certain angle when the chair is unfolded, it is possible to maintain the unfolded state of the chair by spring compression, and to restore the chair itself by restoring the spring when the chair is folded. You can,
The lower end of the slide inclined surface 18a of the upper moving rotary shaft 11 is formed with a locking end 19 formed in a horizontal plane while being in contact with the slide inclined surface 18a, and the slide inclined surface 18b of the lower fixed rotary shaft 13. At the top end of the engaging hook 20 is formed in the horizontal plane while being in contact with the slide inclined surface (18b),
After the slide inclined surface 18a of the upper moving rotary shaft 11 is moved up while being guided by the slide inclined surface 18b on the lower fixed rotating shaft 13 side, the locking end 19 of the upper movable rotating shaft 11 is fixed to the lower side. At the time when it climbs on the locking step 20 of the rotary shaft 13, the side end of the locking end 19 of the upper moving rotary shaft 11 is caught by the locking surface 29 formed on the lower fixed rotary shaft 13. As a result, the upper rotary shaft 11 is no longer rotated, the chair 100 is a chair stool device of the movable stool table, characterized in that the fully unfolded state.
The method according to claim 1,
While being fitted around the upper end of the core 15, the upper end is supported by the core head portion and the lower end is installed in a structure supported by the upper end of the spring 14 via the washer 21, the fastening of the core 15 The chair rotating device of the movable stool table further comprises a speed adjusting pipe 22 for adjusting the elastic force of the spring 14 while being adjusted up and down according to the state adjustment.
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