KR101280909B1 - Chair folding device for table attached chair - Google Patents

Abstract

PURPOSE: A table equipped with an automatic folding-jointed chair is provided to have an effect to conduct a soft and flexible joint operation, and to be able to reduce the impact applied to a stopper or the impact noise due to the soft and flexible joint operation by gradually suppress the rotation speed of the chair while the chair is folded under the table. CONSTITUTION: A table equipped with an automatic folding-jointed chair including a rotation angle controller comprises a ring-shaped stopper which is fixed to table legs (101) with screwing, and has a tearing-off space in which a part of the circumference is cut; a rotary block (20a) which is equipped with a rotation prevention projection positioned in the tearing-off space, in a stopper joint (21a) accommodating the stopper; an upper finishing cap (10a) which covers the rotary block, and is combined to the table legs in a rotatable manner; a fixing block (20b) which is fixed around the circumference of the table legs with screwing and a lower finishing cap; a torsion spring (40) which is assembled around the table legs and connected to the rotary block and the fixing block; a sleeve (22) which is equipped with a slot (22a) which is assembled between the inner diameter of the torsion spring and the outer diameter of the table legs in the interval of the upper/lower finishing caps, and is cut with a fixed length in a longitudinal direction; and a housing which covers the circumference of the torsion spring, is screwed with the upper finishing cap and the rotary block, and is combined with a connecting member connected to table legs.

Description

Table with automatic folding chair with angle of rotation control {CHAIR FOLDING DEVICE FOR TABLE ATTACHED CHAIR}

The present invention relates to a chair-integrated table combined with an automatic folding chair, and more particularly, when the table-integrated chair is automatically folded under the table by the elastic force of the spring, gradually smooth and flexible during the folding operation of the chair The present invention relates to a table having an automatic folding chair having a chair rotation angle control device which can greatly reduce or alleviate the folding shock and collision noise of the chair.

The table defined in the present invention is a table used by a large number of people in elementary / middle / high school, university or academy or office in common, and a chair that can be seated by a large number of people is integrally connected to the table, and the user in the chair Stand up means a chair-integrated table where the chair is automatically folded under the table.

Chair integrated table having the above-mentioned automatic folding chair is introduced in detail by the patent registration Nos. 10-1159280, 10-1090420, can be referred to the prior art described above.

The chair-integrated table with the conventional automatic folding chair proposed in the above-described prior art uses the chair folded out of the table when the user sits on the table chair, and when the user stands up from the chair, the chair is under the table. It is automatically folded, and when the chair is folded under the table is characterized by having a stopper function to limit the folding position of the chair so that the chair does not enter more than a certain depth of the table.

However, the chair-integrated table provided with the above-described conventional automatic folding chair has the effect of automatically arranging the chair even if the chair is automatically folded because the chair is automatically folded under the table when the user stands up from the chair. When the chair is folded under the table by the spring force of the compressed spring when it is pulled out from the table, the chair is rotated under the table during the folding movement (rotation movement) of the chair because the chair is folded up (falling from the floor). Due to the large centrifugal force acting on the chair, the impact applied to the stopper restricting the folding position of the chair is large, resulting in a large impact noise, which causes breakage or breakage of the parts that perform the stopper function. The back of the chair hits the table, causing frequent problems have.

The present invention has been invented to solve the frequent noise of the stopper or crash noise generated during the folding movement of the chair in the table with the automatic folding chair as described above, the object of the present invention is when the chair is folded under the table The present invention provides a table having an automatic folding chair having a rotation angle control device which gradually suppresses the folding speed of the chair in response to the rotation angle of the chair so that the folding motion of the chair is folded smoothly and smoothly.

Another object of the present invention is to limit the folding angle of the chair in order to reduce the collision noise caused by the folding of the chair, and to cushion the impact with an automatic folding chair having a rotation angle control device that can improve the reliability of the stopper function To provide a table.

Means for solving the table having an automatic folding chair having a rotation angle control device according to the object of the present invention;

By providing a resistance element that can interfere with the folding speed of the chair so that the rotation speed of the chair automatic folding device coupled to the table legs is gradually delayed, the folding speed of the chair is gradually delayed when the chair is folded. This can reduce the impact and impact noise generated when the chair is folded under the table.

In addition, the present invention can be implemented by attaching a cushion to the stopper limiting the rotation angle range of the chair when the chair is folded, lowering the impact noise according to the chair folding with the friction element, and cushioning the impact.

The present invention has the effect of smoothly and flexibly folding the chair folding operation by gradually suppressing the rotational speed of the chair while the chair is folded under the table during the folding operation of the chair, the impact applied to the stopper by the smooth and flexible folding operation It also has the effect of lowering the noise of the collision, and also extends the life of the stopper, which limits the angle of rotation of the chair, increases the reliability of the automatic folding chair, and reduces the phenomenon of damaging the back of the chair. There is.

1 is a perspective view illustrating a table having an automatic folding chair according to the present invention;
Fig. 2 is an enlarged view of a portion A in Fig. 1,
Figure 3a is an exploded perspective view of the automatic chair folding apparatus according to the first embodiment of the present invention,
Figure 3b is a sectional view of the main part of the automatic chair folding apparatus according to the first embodiment of the present invention,
Figures 4a and 4b is a cross-sectional view showing the main portion before and after the state change of the sleeve according to the state of the torsion spring in accordance with the present invention,
Figure 5a is an exploded perspective view of the automatic chair folding apparatus according to a second embodiment of the present invention,
Figure 5b is a sectional view of the main portion of the automatic chair folding apparatus according to the second embodiment of the present invention,
Figure 6a is an enlarged perspective view of the upper finishing cap in accordance with the present invention,
6b is an enlarged perspective view of a ring-shaped stopper according to the present invention;
7A and 7B are cross-sectional views of cushions coupled to the upper cap and stopper to cushion shocks.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of an automatic folding table having a rotation angle limiting device of the chair according to the present invention will be described in detail.

[First Embodiment]

Referring to Figure 1, Figure 1 is a perspective view showing an automatic folding table having a rotation angle limiting device of the chair according to the present invention, the table and the table is attached to the bottom to support the table 100 vertically Longitudinal reinforcement member 102 having a rectangular cross section connecting between each table leg 101 and each table leg 101, and a horizontal reinforcement member 103 connecting between the reinforcing member 102 Consists of.

The table leg 101 is foldably attached to the chair automatic folding device 200 is coupled to the connecting member 302 connected to the chair leg 301.

Referring to FIG. 2, FIG. 2 is an enlarged view illustrating an enlarged portion A of FIG. 1 and shows a connection state between the chair automatic folding device 200 and the longitudinal reinforcing member 102.

The table leg 101 penetrates the inside of the chair automatic folding apparatus 200 and is placed on the floor to support the table.

3A and 3B, FIG. 3A is an exploded perspective view showing the chair automatic folding apparatus according to the present invention in an exploded perspective view, and FIG. 3B is a sectional view showing the main parts of the chair automatic folding apparatus shown in FIG. , Automatic chair folding device 200 is between the upper and lower closing caps (10a) and 10b having a through hole (not shown) is coupled to the table leg 101, the upper and lower closing caps (10a) (10b) The housing 50 to which the connection member 302 is attached, the rotating block 20a and the fixed block 20b assembled inside the upper and lower closing caps, and fixed to the rotating block 20a. A sleeve coupled to the periphery of the table leg 101 between the rotary block 20a and the fixed block 20b at the inner diameter of the torsion spring 40 and the torsion spring 40 respectively connected and fixed to the block 20b ( 22).

The upper finishing cap (10a) is a portion of the plane is cut to a certain angle at a certain depth, the longitudinal reinforcing member 102 having a rectangular cross-section is located in the cut cutting space (11).

The rotation block 20a and the fixed block 20b are the same as the inner diameter of the upper and lower closing caps 10a and 10b. The rotating block 20a is fixed to the housing 50 and the upper closing cap 10a by screws B1, and the fixing block 20b is screwed to the lower closing cap 10b and the table leg 101. It is fixed by B2).

In addition, the rotation block (20a) and the fixed block (20b) is provided with a stopper coupling portion (21a) (21b) having an anti-rotation projection (21) for receiving a ring-shaped stopper (30a) in the inner diameter, the torsion Coupling holes 23a and 23b to which end portions 41a and 41b of the spring 40 are engaged are provided.

The stopper 30a has a ring shape, and is provided with a cutting space 31b cut at an angle to accommodate the aforementioned rotation preventing projection 21 on the circumferential surface thereof, and is fastened to the fastening screws B3 and B2. It is fixed to the table leg 101 by this.

The sleeve 22 described above has a tube-shaped slot 22a cut into a predetermined length in the longitudinal direction of the sleeve so that the sleeve 22 can be deformed radially in and out of the sleeve, and has a force restored to its original position.

The inner diameter of the sleeve 22 is larger than the outer diameter of the table leg 101, the outer diameter of the sleeve 22 is configured to be smaller than the inner diameter of the torsion spring (40).

The sleeve 22 may be integrally configured to be connected to any one of the rotary and fixed blocks 20a and 20b or may be independently configured to be separated from the rotary and fixed blocks 20a and 20b, but the sleeve 22 is rotated. In the case of integrally configuring the block 20a, the sleeve 22 is rotated during the folding operation of the chair, which is disadvantageous because the durability of the sleeve 22 is lowered.

In the present invention, the sleeve 22 is integrally coupled to the fixed block 20b by way of example, but the sleeve 22 is separately configured from the rotating block 20a and the fixed block 20a to be configured separately. It is okay.

In addition, the upper finishing cap (10a) is a high-elastic rubber cushion 12b on the surface of the cutting surface (11a) provided by the cutting space 11 as shown in Figures 6a and 7b or as shown in Figure 7a Likewise, any one of the cushion 12a in which the compression spring is built is attached.

The cushions 12a and 12b may alleviate the collision noise of the cutting surface 11a colliding with the reinforcing member 102 when folded under the table 100 by the elastic force inherent in the torsion spring 40. In addition, the impact caused by the collision can be buffered.

As described above, when the chair 300 is taken out of the table 100, the inner diameter of the torsion spring 40 is expanded so that the gap between the outer diameter of the sleeve 22 and the inner diameter of the torsion spring 40 is widened. On the contrary, since the inner diameter of the torsion spring 40 is reduced when the chair is folded under the table 100, the torsion spring 40 presses the outer diameter of the sleeve 22, and the sleeve 22 is around the table leg 101. Will be pressed.

Therefore, as the chair 300 rotates deeply below the table 100, the folding speed (rotation speed) of the chair is gradually suppressed, so that the folding function of the chair is smooth and flexible, and the upper finishing cap as shown in FIG. 6A. The cushion 12b coupled to the cutout surface 11a of 10a has the effect of reducing the impact noise and impact generated when the chair is folded.

If the reinforcing member 102 is installed under the lower closing cap 10b, the chair stopper function appearing in the upper closing cap 10a may be implemented by providing the above-described cutting space 11 in the lower closing cap 10b. .

In addition, the first embodiment of the present invention has been described that the objective function is implemented by the stopper function of the upper stop cap 10a, the stopper 30a, the sleeve 22 and the cushion of the chair, The stopper 30a is selectively employed in FIGS. 3A and 3B because the cutting angle 11 and the reinforcing member 102 having a rectangular cross section located in the cutting space 11 can realize the effect of limiting the rotation angle of the chair. In addition, the rotation angle limiting function of the chair can be implemented only by the stopper 30a, which will be described in detail in the second embodiment below.

[Second Embodiment]

The second embodiment according to the present invention is an embodiment of the stopper function for limiting the rotation angle range of the chair when the cross section of the buoyancy member 102 connected to the table leg is circular, and the second embodiment has been described and illustrated. 5A and 5B are the same as those described in the first embodiment and the assembly example of the components. However, in the second embodiment, the cross section of the reinforcing member 102 is circular, and the screw B3 is attached to the table leg 101 so that the stopper 30a described in the first embodiment is positioned at the engaging portion of the rotation block 20a. The fixing and the upper finishing cap 10a shown in the second embodiment are different from those having the cutting space 11 provided in the upper finishing cap 10a (see FIGS. 3A and 3B) of the first embodiment.

FIG. 6B is a perspective view illustrating the stopper 30a in combination with the cushion 12a shown in FIG. 7A.

For reference, the cushion 12a drills a hole (not shown) in the cutout surface of the stopper 30a, and is coupled to a fastening portion (not shown) and a fastening portion that is spirally coupled to the hole, so that the compression spring (not shown) It is composed of a carburizing body (not shown), and the cushion 12b is provided with a fastening portion (not shown) which drills a hole (not shown) in the cutout surface of the stopper 30a and is screwed into the hole. Consists of high elastic rubber inserted into the fastening part.

The second embodiment is another embodiment for limiting the rotation angle range of the chair during the folding operation of the chair 300 by the stopper (30a) and the anti-rotation protrusion 21, the chair 300 is below the table 100 By folding the outer diameter of the sleeve 22 by the elastic force of the torsion spring 40 during folding, the folding operation of the chair is smoothly and flexibly delayed by increasing the frictional force between the surface of the sleeve 22 and the table leg 101, thereby causing the folding operation of the chair. In addition to lowering the noise generated when the chair is folded under the table, the anti-rotation protrusion 21 provided on the stopper 30a and the rotating block 20a is cut out by the cutting space 31a of the stopper 30a. The folding range of the chair can be limited, and the anti-rotation protrusion 21 reduces the impact and collision noise due to the folding operation of the chair because the folding impact is reduced by the cushioning action of the cushion 12b as shown in FIG. 6B. Can be.

As described above, the present invention can limit the rotation angle of the chair when the chair is automatically folded under the table, and the chair is pressed under the table because the outer diameter of the sleeve is pressed by the torsion spring when the chair is folded under the table. The folding motion is smooth and smooth, and the cushioning action of the cushion reduces the impact noise and the impact on the stopper is greatly alleviated by the cushioning action when the chair stops rotating. have.

10a, 10b: Upper and lower finishing cap 11: upper finishing cap cutting space
11a: cutting surface 12b: high elastic rubber cushion
12a: cushion with compression spring 20a: rotating block
20b: fixed block 21: anti-rotation protrusion
21a, 21b: stopper engaging portion 22: sleeve
22a: slot 23a, 23b: coupling hole
30a: stopper 31a: cutout surface of stopper
31b: Cutting space for stopper 40: torsion spring
41a, 41b: end portion 50 of the torsion spring: housing
100: table 101: table legs
102: longitudinal reinforcing member 103: horizontal reinforcing member
200: chair automatic folding device 300: chair
301: leg leg 302: connecting member
B1 to B3: screw

Claims (3)

delete A table having a chair automatic folding device coupled to a table leg for supporting a table and automatically folding a support attached to a chair under a table by a spring elastic force,
A ring-shaped stopper 30a fixed to the table leg 101 by screwing and having a cutting space 31a in which part of the circumferential surface is cut off;
A rotation block 20a rotatably coupled to the table leg 101 and having a rotation preventing protrusion located at the cutting space 31a in the stopper coupling portion 21a for receiving the stopper 30a; An upper finishing cap 10a covering a circumference of the rotation block 20a and rotatably coupled to the table leg 101;
A fixed block 20b and a lower closing cap 20b fixed around the table leg 101 by screwing;
A torsion spring (40) assembled around the table leg (101) and connected to the rotary block (20a) and the fixed block (20b);
A sleeve 22 which is assembled between the inner diameter of the torsion spring 40 and the outer diameter of the table leg between the upper and lower finishing caps 10a and 10b and has a slot 22a cut in a predetermined length in the longitudinal direction;
It is coupled between the upper and lower finishing caps (10a) (10b) to cover the circumference of the torsion spring (40), and screwed with the upper closing cap (10a) and the rotating block (20a), chair legs 301 Table having a self-folding chair with a rotation angle control device, characterized in that consisting of a housing 50 is coupled to the connection member 302 connected to.
The method of claim 2,
A cushion is coupled to one of the cutting surfaces of the upper finishing cap 10a or the cutting surface of the stopper to cushion the folding impact of the chair when folded, and to reduce collision noise. Table with one self folding chair.

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