KR102172042B1 - Movable type stool table - Google Patents

Abstract

The present invention relates to a movable stool table using rotation technology, which is capable of fixing a sitting position of a user and easily arranging stools. According to the present invention, as the stool table is formed through a combination of an upper moving rotation shaft for a stool and a lower fixed rotation shaft for a table, an operational feature of the upper moving rotation shaft, which is elastically supported by a spring as well as interconnectedly moved up and down when the stool is folded or unfolded, is used to control the rotation of the stool, which is a new stool rotation method. Therefore, the movable stool table is capable of keeping the stool stably unfolded while enabling convenient control and handling such as enabling the stool to be folded by itself due to the restoration force of the spring and improving user convenience. Meanwhile, in particular, a combination of the upper moving rotation shaft and a housing, which can enable slide surface contact through a whole circumference surface, is applied while eliminating a bearing or the like. Thus, the movable stool table can achieve component amount minimization and structural simplification, and an improvement in assembly and a reduction in manufacturing costs as well as an improvement in operability.

Description

Mobile stool table {MOVABLE TYPE STOOL TABLE}

The present invention relates to a movable stool table, and more particularly, to a movable stool table to which a rotation technology for fixing a user's seating position and easy chair arrangement is applied.

In general, catering centers, rest areas, cafeterias, etc. are equipped with movable stool tables and chairs, so that users can sample food or put things on and take a break.

Usually, tables and chairs are mostly separated from each other, and for this reason, there is an inconvenient point of rearranging the chair after use and causing inconvenience in passage by occupying the passage of people by the chair.

In view of this, in recent years, a chair-integrated table has been widely used in which a table and a chair are integrated to increase space use efficiency and solve the problem of organization and management.

For example, Patent Publication No. 10-1104787 discloses a "table in which chairs are integrally formed", and Patent Publication No. 10-1467702 discloses a "folding-type chair integrated table equipped with a connection support". In addition, Patent Publication No. 10-1476547 discloses a "foldable chair integrated table".

However, in the conventional tables as described above, since a normal chair in which a chair leg and a seat plate are integrally formed is rotatably coupled to a post that supports the table against the floor surface, the chair leg is rotated on the floor surface. There is a problem that the chair leg and the floor surface are damaged due to friction with the chair assembly, and the support moves when the chair assembly is rotated, resulting in poor stability, and there are many areas that come into contact with the floor surface such as table legs and chair legs. There are a lot of inconveniences when working.

In consideration of these points, the present applicant has proposed "a chair rotating device of a movable stool table" in Korean Patent Publication No. 10-1982262.

The above ``Chair Rotation Device of a Mobile Stool Table'' is composed of a combination of an upper movable rotation axis on the chair side and a lower fixed rotation axis, and when the chair is unfolded or folded, it moves up and down in connection with it, and the upper movable rotation axis receives elastic support from a spring. It consists of a structure that controls the rotation of the chair by using the motion characteristics.

However, the "stool rotating device of a movable stool table" has the following disadvantages.

First, since the number of parts such as the bearing cap and housing connected to the chair side frame, the upper and lower bearings, and the bearing fixing bush are large and the structure is complex, there is a disadvantage of lowering the fabrication and assembling performance as well as increasing the manufacturing cost.

Second, there is a disadvantage in that formability is inferior, such as forming a bearing seating groove for bearing mounting and processing a rotation preventing protrusion and a protruding rail groove for vertical movement of the upper moving rotary shaft.

Third, when the chair rotates, the upper moving rotary shaft also rotates and moves up and down.At this time, the upper moving rotary shaft moves up and down while receiving the slide guide between the rotation preventing protrusions on both sides and the protruding rail groove, so the slide contact area is insufficient for rotation prevention. There is a disadvantage in that the operation is not smooth, such as that the protrusion is caught in the protrusion rail groove or can be operated stiffly, and there is a structural disadvantage in that bearings must be provided at the top and bottom in order to solve this deterioration in operability.

Registered Patent Publication No. 10-1982262 Registered Patent Publication No. 10-1484975 Unexamined Patent Publication No. 10-2007-0046330 Public Utility Model Publication No. 20-2017-0000448 Unexamined Patent Publication No. 10-2012-0017489

Therefore, the present invention was devised in consideration of the above points, and it is made up of a combination of the upper moving rotation axis of the chair side and the lower fixed rotation axis of the table side, and when the chair is unfolded or folded, it moves up and down in connection with this, and elasticity of the spring is supported. By implementing a new chair rotation method that controls the rotational operation of the chair by using the motion characteristics of the upper moving rotation shaft, the unfolded state of the chair can be stably maintained and the chair can be folded by itself by the restoring force of the spring. It is easy to operate and handle, and improves the convenience of use. In particular, the combination between the housing and the upper moving rotary shaft that allows sliding surface contact through the entire circumferential surface while removing the bearings is applied to improve operability as well as parts. Its purpose is to provide a movable stool table that can minimize the number, simplify the structure, and improve assembly and reduce manufacturing costs.

In order to achieve the above object, the movable stool table provided by the present invention has the following features.

The movable stool table is connected to the chair side and has an upper movable rotary shaft installed inside a housing having an inner circumferential surface consisting of three flat portions and one curved portion, a lower fixed rotary shaft installed on a bracket on the table side, and the housing A spring installed inside of the upper movable rotary shaft to elastically support the upper movable rotary shaft and compressed when the upper movable rotary shaft rises and restored when the upper movable rotary shaft descends, and the bracket while being disposed along the central axis of the upper movable rotary shaft and the lower fixed rotary shaft. The body and the body in the form of a hollow cylinder having an outer circumferential surface capable of surface contact with the inner circumferential surface of the housing including a core installed in a structure coupled to the top, and the upper moving rotation shaft is composed of a flat portion on three sides and a curved portion on one side. It is formed integrally on the bottom of the housing and consists of a hollow cylindrical support having a spiral slide inclined surface and a horizontal surface, and can move up and down while in contact with the slide surface through the entire circumferential surface of the housing inner circumferential surface from the inside of the housing. The rotating shaft is composed of a body in the form of a square plate fixed to the bracket side and a cylindrical support having a spiral slide slope and a horizontal surface while being formed on the upper surface of the body, and the support of the upper moving rotary shaft is at the upper end of the support of the lower fixed rotary shaft. Since the coaxial structure is closely adhered and stacked, the upper moving rotary shaft that rotates with the chair when unfolding or folding the chair moves up and down through the sliding guide between the slide slopes, and the position is regulated or released through close contact or separation between horizontal surfaces. If the chair is rotated more than a certain angle when the chair is unfolded, the unfolding state of the chair can be maintained by spring compression, and when the chair is folded, the spring can be restored to allow the chair to be folded by itself, and the slide slope of the upper moving axis A horizontal surface is formed at the lower end of the slide inclined surface while being connected to the slide inclined surface, and a horizontal surface is formed at the upper end of the slide inclined surface of the lower fixed rotating shaft while being connected to the slide inclined surface. The guide of the slide slope After rising up while receiving, at the time when the horizontal plane of the upper moving rotary shaft rises on the horizontal plane of the lower fixed rotary shaft, the upper moving rotary shaft and the lower fixed rotary shaft are mutually pressed in the vertical direction by the spring force, so that the upper moving rotary shaft is more self-contained. As the chair is not rotated abnormally, it is possible to maintain the unfolded state.In addition, when the chair is artificially tilted further, the upper moving axis rotates through slide contact between the horizontal planes, so that the chair can be maintained in a relatively more unfolded state.

Here, the bracket is made of a combination of a first bracket and a second bracket that are coupled with a table leg therebetween, and the outer surface of the second bracket consists of an upper plate, a lower plate, and a space formed therebetween. A housing seating portion is formed, and a rubber stopper may be installed at both side ends of the housing seating portion to control the rotation of the housing while contacting the housing.

In addition, it is preferable to protrude a frame connection portion that is coupled while being inserted into the frame end of the chair on one side of the outer surface of the housing, so that the chair can be detachably separated from the table side or coupled to the table side.

The movable stool table provided by the present invention has the following effects.

First, by providing a new movable stool table consisting of a combination of a chair-side upper moving rotary shaft and a table-side fixed lower rotary shaft that are interlocked with the chair when unfolding or folding, and a spring that provides compression and restoring force according to the rotating operation of the chair. , When the chair is fully unfolded, the unfolded state of the chair can be maintained by the force of the spring, and the restoring force of the spring acts even when the chair is folded and the chair can be folded by itself, and it is fixed when the chair is unfolded over a certain angle. At the same time, there is an effect of improving user convenience by automatically returning when a certain angle is pushed slightly or more.

Second, by adopting a slide contact structure in which the housing of the chair frame side and the upper moving rotary shaft are in surface contact over the entire circumferential surface, smooth and smooth operation of the upper moving rotary shaft in the vertical direction is secured. It is possible to minimize the number of parts, such as being able to delete parts such as caps, to simplify the overall structure, to reduce volume and weight, as well as to facilitate assembly work, and to reduce manufacturing cost.

Third, since the opening angle of the chair can be arbitrarily adjusted within the range of the second step to the third step, the chair can be removed and used according to the user's body shape. In particular, the operation of removing or inserting the chair is very easy. It has a very convenient effect for use by the disabled.

1 and 2 are perspective views showing a chair rotating device in a movable stool table according to an embodiment of the present invention
3 is a cross-sectional view showing a chair rotating device in a movable stool table according to an embodiment of the present invention
Figure 4 is a cross-sectional view showing an operating state of the chair rotating device in the mobile stool table according to an embodiment of the present invention
5 is a plan view showing a state in which a chair is manipulated in three stages in a movable stool table according to an embodiment of the present invention;
6 is a perspective view showing a state of use of a movable stool table according to an embodiment of the present invention

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

1 and 2 are perspective views illustrating a movable stool table according to an exemplary embodiment of the present invention, and FIG. 3 is a cross-sectional view illustrating a movable stool table according to an exemplary embodiment of the present invention.

As shown in Figures 1 to 3, the movable stool table is a spring 14 for elastically supporting the upper movable rotation shaft 11 on the chair side, the lower fixed rotation shaft 13 on the table side, and the upper movable rotation shaft 11 By applying the combination of, when the chair is unfolded or folded, the chair can be fixed in an open state, and the chair can be automatically completely folded and stored under the table.

To this end, the movable stool table includes an upper movable rotary shaft 11 that is installed on the chair side and rotates with the chair when the chair is unfolded or folded, and is movable in the vertical direction.

The upper moving rotary shaft 11 is composed of a hollow cylindrical body 11a and a support 11b, and the support 11b can be integrally formed in the center of the bottom surface of the body 11a.

This upper moving rotary shaft 11 is connected to the chair frame 110 in the chair 100 using the body 11a, the interior of the housing 10, that is, the flat portion 16a on the three sides and the It is inserted into the housing 10 having an inner circumferential surface made of a curved portion 17a and installed in a structure capable of sliding up and down, and the support 11b of the upper movable rotary shaft 11 installed in this way is the lower fixed rotary shaft 13 It can be stacked in a coaxial structure on the upper surface of the support (13b) of.

In particular, the outer surface of the upper moving rotation shaft 11 is composed of a three-sided flat portion 16b and one-sided curved portion 17b, so that surface contact with the inner peripheral surface of the housing is possible.

That is, the upper movable rotary shaft 11 is inserted and positioned in a structure that fits inside the housing 10, and the outer circumferential surface is in contact with the slide surface through the entire circumferential surface with the housing inner circumferential surface, so that it can move up and down along the inner circumferential surface of the housing.

In this way, the housing 10 and the upper movable rotary shaft 11 are joined to form the same cross-section, and in this state, the housing 10 and the upper movable rotary shaft 11 slide up and down while being in surface contact through the entire circumferential surface. Is able to slide up and down smoothly, and in the end, the upper moving rotary shaft 11 is prevented from rotating on its own, as well as being able to slide smoothly in the vertical direction while rotating together with the housing 10 without auxiliary means such as bearings. It is possible to ensure excellent operability of the upper moving rotary shaft (11).

In addition, a slide inclined surface 18a is formed on the support 11b of the upper moving rotary shaft 11 along a spiral trajectory over an approximately 180° section, and the lower end of the slide inclined surface 18a formed in this way is formed with a slide inclined surface. A horizontal surface 19a connected to 18a is formed.

Here, the slide inclined surface (18a) is in contact with the slide inclined surface (18b) formed on the support (13b) of the lower moving fixed shaft (13) to receive the sliding guide and ride up and down the slide inclined surface (18b) at this time. The horizontal surface (19a) goes to the end of the horizontal surface (19a) when the slide slope (18a) on the side of the upper movable rotation shaft (11) rises upward while being guided by the slide slope (18b) on the side of the lower fixed rotation shaft (13). It is possible to be placed on a horizontal surface 19b formed on the support 11b of the lower fixed rotation shaft 13 (at the lift limit position).

In addition, the movable stool table includes a housing 10 as a means serving as a rotation center axis of the chair 100 when the chair 100 is unfolded or folded.

In the form of a tube having an inner circumferential surface consisting of a three-sided flat portion 16a and one-sided curved portion 17a of the housing 10, it is coupled to the chair frame 110 of the chair 100 to provide the chair 100. When unfolded or folded, it can rotate around its own axis.

In addition, the housing guide 27, the spring 14, the upper movable rotary shaft 11 and the lower fixed rotary shaft 13 are sequentially received inside the housing 10, and the inner peripheral surface of the housing 10 at this time is The upper movable rotary shaft 11 and the outer circumferential surface of the upper and lower slidable degree can be matched.

The housing 10 is installed in a rotatable structure while being positioned in the housing mounting portion 25 formed on the bracket 12 and supported by the upper and lower plates 23 and 24 of the bracket 12.

At this time, when the housing 10 is rotated, the upper housing guide 27 and the lower fixed rotary shaft 13 are accommodated inside, and substantially the support 13b of the lower fixed rotary shaft 13 is It acts as a central axis.

In addition, the housing 10 may be coupled to the chair frame 110 on the chair side in a detachable structure. To this end, the outer side of the housing 10 is formed of a chair frame 110 in the form of a square pipe. The frame connection portion 20 that is coupled while being inserted into the end is protruded.

Accordingly, when the chair frame 110 is removed from the frame connection portion 20 of the housing 10 for replacement or repair of the chair 100, the chair 100 can be easily separated from the table side, and If the frame connector 20 of the housing 10 is inserted into the chair frame 110 of the chair or the repaired chair, the chair 100 can be easily installed on the table side.

In addition, 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 vertical movement of the upper movable rotary shaft 11 that moves up and down. It includes a fixed rotating shaft (13).

The lower fixed rotation shaft 13 is composed of a rectangular plate-shaped body 13a and a hollow cylindrical support 13b, and the support 13b is integrally formed on the upper surface of the body 13a. do.

This lower fixed rotation shaft 13 can be installed in a structure supported by the bracket 12 on the table side.

To this end, the bracket 12 is made of a combination of a first bracket 21 and a second bracket 22 that are mated together with a screw-fastening structure with a circular table leg therebetween, and the second bracket ( The outer surface of 21) consists of an upper plate 23 and a lower plate 24, and a space formed therebetween, and a housing seating portion 25 in which the housing 10 is located is formed.

The support (13b) of the lower fixed rotary shaft 13 is inserted from the bottom to the top in the circular hole formed on the lower plate 24 of the second bracket 22 of the bracket 12, and at the same time, the body of the lower fixed rotary shaft 13 (13a) is seated in the square groove formed on the bottom of the lower plate 24 and is hung upward, so that the lower fixed rotary shaft 13 receives the fastening force of the core 15, which will be described later, while at the bracket 12 side. It can be installed in a fixed structure.

At this time, at both side ends of the housing seating portion 25 formed in the second bracket 22 of the bracket 12, a stopper 26 made of rubber material that controls the rotation of the housing 10 while contacting the housing 10. ) Is installed.

Here, the stopper 26 is a rod shape having a "c"-shaped cross-section and can be installed in a structure that is fitted to both side walls of the housing seating portion 25.

Accordingly, when the housing 10 is rotated to the left or right by a predetermined angle or more, it can be brought into contact with the stopper 26, and in this state, the housing 10 is no longer rotated in the direction to be rotated.

In particular, a slide inclined surface 18b that continues along a spiral trajectory over an approximately 180° section is formed on the support 13b of the lower fixed rotating shaft 13, and at the upper end of the slide inclined surface 18b formed in this way, a slide inclined surface A horizontal surface 19b connected to the 18b is formed.

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

And, the horizontal surface (19b) goes to the end after the slide slope (18a) on the side of the upper moving rotation shaft (11) rises upward while being guided by the slide slope (18b) on the side of the lower fixed rotation shaft (13). ) It is possible to support the horizontal plane (19a) of the upper moving rotation shaft (11) on board.

Accordingly, after the slide inclined surface 18a of the upper moving rotary shaft 11 is guided by the slide inclined surface 18b on the lower fixed rotary shaft 13 side, the horizontal surface 19a of the upper moving rotary shaft 11 is The upper moving rotary shaft 11 by itself is no longer rotated by the force of the spring 14 pressing the upper moving rotary shaft 11 down at the time of getting on the horizontal surface 19b of the lower fixed rotary shaft 13 As a result, the chair 100 can be fixed in the unfolded state up to this point unless the user artificially unfolds the chair.

In addition, the movable stool table includes a spring 14 as a means for elastically supporting the upper moving rotation shaft 11 on the chair side.

The spring 14 is a type of coil spring, which surrounds the core 15 and is positioned inside the housing 10 to be installed in the housing 10 and the housing guide 27 and the upper moving rotation shaft 11 at the bottom. ) Is installed in a structure in which the upper and lower ends are supported between the body (11a).

The spring 14 installed in this way is compressed when the upper moving rotary shaft 11 moves upward, and when the upper moving rotary shaft 11 moves downward, it is restored (expanded) and can push the upper moving rotary shaft 11 downward. There will be.

Accordingly, when the spring 14 is compressed, a frictional force between the horizontal surface 19a of the upper moving rotary shaft 11 and the horizontal surface 19b of the lower fixed rotary shaft 13 acts by the compression force exerted by the spring. ) Can be fixed (maintained), and the upper moving rotary shaft 11 is pushed down by the pushing force exerted by the spring when the spring 14 is restored, and the slide inclined surfaces 18a, 18b As the sliding action occurs, the chair 100 can be automatically folded while rotating.

In addition, the movable stool table includes a core 15 that serves to hold the center as a whole in relation to the rotation of the chair.

The core 15 is formed in the form of a long bolt including a nut, and is installed in a structure fastened on the bracket 12 on the table side.

For example, the core 15 is disposed along the central axis of the upper moving rotary shaft 11 and the lower fixed rotary shaft 13, and the housing guide 27 installed on the upper plate 23 of the bracket 12 It penetrates the axis and penetrates the axis of the lower fixed rotary shaft 13 installed on the lower plate 24 of the bracket 12, and in this state, protrudes to the bottom of the body 13a of the lower fixed rotary shaft 13 Since the nut is fastened to the lower threaded portion of the core 15, the core 15 can be installed in a structure supported on the bracket 12.

Since the core 15 in the form of a long bolt at the rotating part of the chair 100 acts as a central axis, the center of the chair 100 can be stably maintained. Can be secured.

Figure 4 is a cross-sectional view showing an operating state of the chair rotating device in the mobile stool table according to an embodiment of the present invention.

As shown in Fig. 4, the slide slope 18a and the table 120 of the upper moving rotary shaft 11 on the chair 100 side in a state folded downward of the table 120 without using the chair 100 The slide inclined surface 18b of the lower fixed rotation shaft 13 on the) side can be positioned facing each other while overlapping some inclined surface sections, and the upper movable rotating shaft 11 can be maintained in a downward position. At the same time, the springs 14 each maintain a restored (expanded) state.

In this state, when the user unfolds the chair 100, the chair 100 rotates and the upper moving rotation shaft 11 at this time also rotates in an angle and direction corresponding to the extent of the chair unfolding. Since the slide slope (18a) of the movable rotation shaft (11) slides upward on the slide slope (11b) of the lower fixed rotation shaft (13), the upper movable rotation shaft (11) also slides upward while compressing the spring (14). Will move.

Next, in the process of unfolding the chair 100, the upper moving rotation shaft 11 rotates and rises while receiving the sliding guide between the slide inclined surfaces 18a and 18b, and continues to unfold the chair 100 at an angle suitable for the user to sit. In a state, for example, the chair 100 can be fixed while the horizontal surface 19a of the upper moving rotary shaft 11 is mounted on the horizontal surface 19a of the lower fixed rotary shaft 13, so that the user You will be able to sit comfortably at 100.

On the other hand, in the case of folding the chair 100 after using the chair 100, when the user stands up from the chair 100 and then slightly pushes the chair 100 in the folding direction (when the contact between the horizontal surfaces is pushed to an extent that it is out of contact) , From this time on, the restoring force of the spring 14 is applied and the upper moving rotary shaft 11 is pushed down, and as a result, the upper moving rotary shaft 11 descends and the chair folding direction while receiving the sliding guide between the slide slopes 18a and 18b. As it rotates, the chair 100 at this time also rotates in the folding direction, and eventually, when the chair 100 is folded, there is no force at all, and the user does not have to do the trouble of folding the chair 100 The chair 100 can be completely folded automatically by the restoring force of 14 and the rotational force of the upper moving rotary shaft 11.

5 is a plan view showing a state in which a chair is manipulated in three stages in a movable stool table according to an embodiment of the present invention, and FIG. 6 is a perspective view illustrating a state of use of the movable stool table according to an embodiment of the present invention.

5 and 6, when the chair 100 of the movable stool table is not used, the chair 100 enters the inside of the table 120, and the upper moving rotation axis of the chair rotating device at this time In addition to the position of (11) downwards, the upper moving rotary shaft and the lower fixed rotary shaft 13 are in a state of facing each other's slide inclined surfaces 18a and 18b (step 1).

In the case of using the chair 100 of the movable stool table, when the user expands the chair 100 to the outside of the table, the chair 100 rotates and the upper moving rotation shaft 11 at this time corresponds to the degree of the chair spread open. At the same time, the slide inclined surface 18a of the upper moving rotating shaft 11 is guided along the slide inclined surface 11b of the lower fixed rotating shaft 13, and thus the upper moving rotating shaft 11 is spring It slides upward while compressing (14).

Subsequently, in the process of unfolding the chair 100, the upper moving rotating shaft 11 rotates and rises while receiving the sliding guide between the slide inclined surfaces 18a and 18b, and the horizontal surface 19a connected to the slide inclined surface 18a is It is mounted on the horizontal surface 19b connected to the slide slope 18b of the lower fixed rotary shaft 11, and when the user stops the operation of unfolding the chair 100 in this state, the upper moving rotary shaft 11 14) is no longer rotated by itself by the pressing force, and eventually the chair 100 is fixed in an appropriately unfolded state.

In this way, in the unfolded state of the chair 100, a frictional force acts between the upper moving rotary shaft 11 and the lower fixed rotary shaft 13 by the compressive force of the spring 14, so that the upper moving rotary shaft 11 is restricted in rotation, As a result, the unfolded state of the chair 100 can be stably maintained unless the user artificially folds the chair 100, so that the user can conveniently use the chair 100 (step 2).

Even in such a fixed state of the chair 100, if a force is artificially applied to the chair 100, the user can arbitrarily expand or fold the chair 100 further outward, so the spreading angle of the chair 100 according to their body shape Can be used by appropriately adjusting.

On the other hand, in the case of cleaning the lower part of the table 120, when the user expands the chair 100 more outward, that is, when the chair 100 is expanded more outward than the state in which it was being used, the upper moving rotation shaft 11 at this time The horizontal plane (19a) of the lower fixed rotation shaft (13) is rotated along the horizontal plane (19b), and if the housing (10) is continuously hung on the stopper (26), the chair (100) is completely extended outward. , It is possible to more easily clean the bottom of the table 120 without interference of the chair 100 (step 3).

That is, since the chair 100 is removed from the bottom of the table 120 as far as possible to perform cleaning, the cleaning can be performed simply and easily.

On the other hand, in the case of folding the chair 100 after cleaning or after using the chair, when the user slightly pushes the chair 100 in the folding direction, the horizontal surface 19a of the upper moving rotation shaft 11 becomes the lower fixed rotation shaft 13 ) Of the horizontal plane (19b), and from this point on, the restoring force of the spring 14 acts and pushes the upper moving rotary shaft 11 downward, and as a result, the upper moving rotary shaft 11 becomes the slide inclined surfaces 18a, 18b As the chair 100 rotates in the downward and folding direction while receiving the sliding guide of the liver, the chair 100 at this time also rotates in the folding direction, and as a result, when the chair 100 is folded, it takes less force, and the user can use the chair ( The chair 100 can be automatically completely folded using the restoring force of the spring 14 and the rotational force of the upper moving rotary shaft 11 without the trouble of folding 100).

As described above, in the present invention, by providing a new type of movable stool table to which a combination of an upper movable rotary shaft installed on the chair side, a lower fixed rotary shaft installed on the table side, and a spring for providing fixing and restoring force of the chair is provided, While minimizing the number of parts related to the unfolding and folding operation of the table, the overall structure can be simplified, and the chair can be fixed when it is unfolded over a certain angle, and automatically restored when the chair is slightly pushed over a certain angle. User convenience can be improved and space efficiency can be increased.

10: housing
11: Upper moving rotary shaft
12: bracket
13: Lower fixed rotating shaft
14: spring
15: core
16a,16b: flat part
17a, 17b: curved part
18a,18b: slide slope
19a,19b: horizontal plane
20: frame connection
21: first bracket
22: 2nd bracket
23: top plate
24: lower plate
25: housing mounting portion
26: stopper
27: housing guide

Claims (3)

An upper moving rotation shaft 11 installed inside the housing 10, which is connected to the chair and has an inner circumferential surface consisting of three flat portions 16a and one curved portion 17a, and a bracket 12 on the table side. ) Installed in the lower fixed rotary shaft 13 and the upper moving rotary shaft 11 installed inside the housing 10 and elastically supporting the upper moving rotary shaft 11, and compressed when the upper moving rotary shaft 11 is raised. ) And a core 15 that is installed in a structure coupled to the bracket 12 while being disposed along the central axis of the upper moving rotation shaft 11 and the lower fixed rotation shaft 13, and the spring 14 restored when descending. Including,
The upper moving rotation shaft 11 is formed of a three-sided flat portion (16b) and one-sided curved portion (17b) and has a hollow cylindrical body 11a having an outer circumferential surface capable of surface contact with the inner circumferential surface of the housing, and the body While integrally formed on the bottom of (11a), it is composed of a hollow cylindrical support (11b) having a spiral slide inclined surface (18a) and a horizontal surface (19a), while being inserted into a structure that fits inside the housing (10). The outer circumferential surface is in slide contact with the entire circumferential surface of the housing and can be moved up and down along the inner circumferential surface of the housing, and the lower fixed rotation shaft 13 is a square plate-shaped body 13a fixed to the bracket 12 side. And it is formed on the upper surface of the body (13a) and consists of a cylindrical support (13b) having a spiral slide inclined surface (18b) and a horizontal surface (19b), in this way, the housing 10 and the upper moving rotation shaft 11 is the same It is joined while forming a cross section, and in this state, it slides up and down while being in contact with the entire circumferential surface, so that the housing 10 and the upper moving rotary shaft 11 can smoothly slide up and down with each other, and eventually move upward. The rotation shaft 11 is not only prevented from rotating by itself, but also rotates with the housing 10 without an auxiliary means such as a bearing, and can smoothly slide in a vertical direction, thereby ensuring excellent operability of the upper moving rotation shaft 11. Will be
The support 11b of the upper moving rotary shaft 11 is stacked in close contact with the upper end of the support 13b of the lower fixed rotary shaft 13 in a coaxial structure, so that the upper moving rotary shaft 11 rotates with the chair when the chair is unfolded or folded. ) Moves up and down through the sliding guide between the slide inclined surfaces (18a, 18b) and the position is regulated or released through close contact or separation between the horizontal surfaces (19a, 19b), so that the chair rotates more than a certain angle when unfolding If you do, you can maintain the unfolded state of the chair by spring compression, and when the chair is folded, the spring can be restored to allow the chair to fold by itself.
At the lower end of the slide inclined surface 18a of the upper moving rotation shaft 11, a horizontal surface 19a is formed while being connected to the slide inclined surface 18a, and the upper end of the slide inclined surface 18b of the lower fixed rotating shaft 13 A horizontal surface 19b is formed while being connected to the slide inclined surface 18b in the portion, so that the slide inclined surface 18a of the upper moving rotary shaft 11 is guided by the slide inclined surface 18b on the lower fixed rotating shaft 13 side. After ascending, when the horizontal surface 19a of the upper moving rotary shaft 11 is on the horizontal surface 19b of the lower fixed rotary shaft 13, the upper moving rotary shaft 11 and the lower fixed rotary shaft 13 are caused by the spring force. Since they are mutually pressed in the vertical direction, the upper moving rotary shaft 11 is no longer rotated by itself, so that the chair 100 can maintain the unfolded state, and when the chair is artificially tilted further, the upper moving rotary shaft 11 is A movable stool table, characterized in that the chair 100 is able to maintain a relatively more unfolded state while being rotated through slide contact between the horizontal surfaces 19a and 19b. delete delete

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