KR102770610B1 - A chair for easy disassembly and assembly - Google Patents

Abstract

The present invention relates to an assembly-type chair that is easy to assemble and disassemble, and its purpose is to provide an assembly-type chair that can easily be assemble and disassembled into a backrest shell, a tilt support member, and a frame while the backrest shell tilts.
The present invention comprises: a coupling portion provided on a climbing shell; an elastic portion having one side fitted and supported by the coupling portion so as to be located on the outer side (B) of the climbing shell; a tilt support portion having the other side of the elastic portion in contact and supported, one side inserted into a frame and fixedly supported, and the other side of the elastic portion in contact and supported; a fastening portion inserted so as to penetrate the coupling portion and the elastic portion on the inner side (A) of the climbing shell so as to enable rotation of the climbing shell and having an end fastened to the tilt support portion; and a pin portion installed so as to penetrate the coupling portion on the inner side (A) of the climbing shell and have an end in contact and supported by one side of the tilt support portion; so that tilting of the climbing shell is achieved without a separate assembly tool, and coupling of the climbing shell and the frame is achieved.

Description

{A chair for easy disassembly and assembly}

The present invention relates to an assembly-type chair that is easy to assemble and disassemble, and relates to an assembly-type chair that is easy to assemble and disassemble, in which a backrest and a frame are simply and sturdily assembled so that the backrest can be stably supported while the backrest can be tilted.

In general, office chairs are divided into personal office chairs used in individual work spaces such as offices or studies, and public office chairs used in large spaces such as conference rooms or lecture halls. Most of the personal office chairs (frame chairs) mentioned above are widely used chairs with a tilt function that allows the back to be leaned back when leaning against the backrest to reduce fatigue even during long hours of work.

In the past, chairs equipped with a tilting function had tilting means installed on both sides between the frame and the backrest, so that when an external force is applied to the backrest, the backrest tilts forward and backward around the tilting means.

However, conventional chairs equipped with a tilting function have problems in that the support and bonding force of the backrest to the frame are reduced and the tilting angle of the backrest cannot be maintained constant depending on the user's weight because an elastic body made of rubber or urethane is used as the tilting means. In particular, when the tilting means is made of an elastic body made of rubber or urethane, the durability of the tilting means itself is reduced, and there is a problem in that not only the tilting operation of the backrest but also the function of the backrest itself is reduced when used for a long period of time.

In addition, in order to improve the above problems, a tilting means including a coil spring (or torsion spring) has been developed, but when a torsion spring is used, not only is disassembly and assembly difficult due to the elasticity of the torsion spring, but a separate jig is required when setting the initial pressure of the climbing plate, so there is a problem that the overall assembly efficiency is reduced.

In addition, conventional chairs in which the backrest tilts have the tilting means simply connected or bolted to the frame, so when the backrest tilts for a long period of time, there are various problems such as a gap occurring between the tilting means and the frame due to the load generated during the tilting operation, resulting in a decrease in the support and bonding force for the backrest.

Publication of Patent Publication No. 10-2014-0049242 (2014.04.25) Patent Registration No. 10-2141589 (2020.07.30) Patent Registration No. 10-2592658 (2023.10.18) Patent Registration No. 10-1560214 (2015.10.07)

The purpose of the present invention is to provide an assembly-type chair in which the climbing shell, tilt support member, and frame can be easily disassembled/assembled while the climbing shell tilts.

The purpose of the present invention is to provide an assembly-type chair in which the initial pressure of a tilting automatic climbing shell can be easily set by assembling and installing a pin portion.

The purpose of the present invention is to provide an assembly-type chair in which the assembling ability and bonding force of a backrest shell to a frame are improved by the engaging support and pressurizing support of a fixing screw and a fixing bolt.

The present invention comprises: a coupling portion provided on a climbing shell; an elastic portion having one side fitted and supported by the coupling portion so as to be located on the outer side (B) of the climbing shell; a tilt support portion having the other side of the elastic portion in contact and supported, one side inserted into a frame and fixedly supported, and the other side of the elastic portion in contact and supported; a fastening portion inserted so as to penetrate the coupling portion and the elastic portion on the inner side (A) of the climbing shell so as to enable rotation of the climbing shell and having an end fastened to the tilt support portion; and a pin portion installed so as to penetrate the coupling portion on the inner side (A) of the climbing shell and have an end in contact and supported by one side of the tilt support portion; so that tilting of the climbing shell is achieved without a separate assembly tool, and coupling of the climbing shell and the frame is achieved.

The present invention has a simple structure of a climbing shell and a tilt support member, so that the climbing shell, tilt support member, and frame can be easily disassembled and assembled.

The present invention has the effect of improving the assembling efficiency of the climbing shell and the tilt support portion since the climbing shell is assembled to the tilt support portion so that tilting is achieved by the fastening portion and the pin portion. That is, the present invention has the effect of improving the overall assembling efficiency since the initial assembly state of the climbing shell and the tilt support portion is achieved by simple fitting installation, and the initial pressure for the climbing shell is easily set by simple fitting installation of the pin portion.

The present invention has the effect of improving the overall disassembly and assembly efficiency by facilitating the setting of initial pressure for a climbing shell without a separate assembly tool or jig by installing a pin portion, and also facilitating the disassembly of a climbing shell assembled to set the initial pressure.

That is, since the present invention enables installation of an elastic member with strong elasticity through improvement in disassembly and assembly, not only is the tilting strength of the climbing shell maintained constant for users of various body weights, but the tilting strength is also maintained even when used for a long period of time, and there is no decrease in the tilting strength of the climbing shell even when disassembling and assembling repeatedly multiple times.

The present invention has the effect of preventing a play in the climbing shell and improving the elastic operating force of the climbing shell by supporting the climbing shell by the elastic force of the elastic part by setting the initial pressure of the climbing shell.

Since the fastening portion and pin portion of the present invention are installed from the inside to the outside of the climbing shell, the effect of maintaining an attractive appearance quality is achieved without installing a separate finishing cap.

The present invention has the effect of facilitating the assembly of a frame and a tilt support member and preventing detachment of the tilt support member by a fixing screw that is directly screw-assembled to the tilt support member, thereby facilitating the assembly and disassembly of the frame and the tilt support member and facilitating separation and collection when discarded.

Since the present invention assembles the frame and the tilt support member by the engaging support of a fixing screw and a fixing bolt made of a metal material, there is an effect of achieving a sturdy assembly of the frame and the tilt support member.

In particular, when the tilt support member is made of an injection molded material, separate processing for assembly with the frame is not required, so the appearance quality and strength of the tilt support member are maintained consistently.

The present invention has many effects, such as being easily applicable not only to chairs without armrests but also to chairs with armrests of various shapes, since the tilt support member can be formed integrally with the armrest.

Figure 1 is an exemplary diagram showing the overall configuration of a chair according to the present invention.
Figure 2 is an exemplary diagram showing a tilting assembly structure of a climbing shell according to the present invention.
Figure 3 is another example showing a tilting assembly structure of a climbing shell according to the present invention.
Figure 4 is an exemplary diagram showing the internal assembly configuration of a chair according to the present invention.
Figure 5 is an exemplary diagram showing the configuration of a tilt support member according to the present invention.
Figure 6 is an exemplary diagram showing the configuration of the joint part, tilt support part, and rotation part of the present invention.
Figure 7 is an example diagram showing the connection relationship of the present invention.
Figure 8 is an example diagram showing the configuration of a pin portion according to the present invention.
Figure 9 is an example diagram showing the assembly configuration of a pin portion according to the present invention.
Figure 10 is an exemplary diagram showing the configuration of a rotating part according to the present invention.
Figure 11 is an example diagram showing the assembly configuration of the present invention.
Figure 12 is an example diagram showing the initial pressure state setting process according to the present invention.
Figure 13 is an example diagram showing a configuration in which various armrest structures are combined in the present invention.

FIG. 1 is an exemplary diagram showing the overall configuration of a chair according to the present invention, FIG. 2 is an exemplary diagram showing a tilting assembly structure of a backrest shell according to the present invention, FIG. 3 is another exemplary diagram showing a tilting assembly structure of a backrest shell according to the present invention, FIG. 4 is an exemplary diagram showing the internal assembly configuration of a chair according to the present invention, FIG. 5 is an exemplary diagram showing the configuration of a tilt support part according to the present invention, FIG. 6 is an exemplary diagram showing the configuration of a coupling part, a tilt support part, and a rotation part according to the present invention, FIG. 7 is an exemplary diagram showing the connection relationship of the present invention, FIG. 8 is an exemplary diagram showing the configuration of a pin part according to the present invention, FIG. 9 is an exemplary diagram showing the assembly configuration of a pin part according to the present invention, FIG. 10 is an exemplary diagram showing the configuration of a rotation part according to the present invention, FIG. 11 is an exemplary diagram showing the assembly configuration of the present invention, FIG. 12 is an exemplary diagram showing an initial pressure state setting process according to the present invention, and FIG. 13 is a diagram showing a configuration in which various armrest structures are combined according to the present invention. As shown in the example diagram,

The present invention comprises a joining part (10) provided in a climbing shell (70);

An elastic member (20) whose one side is fitted and supported by a connecting member (10) so as to be located on the outer side (B) of the climbing shell (70);

A tilt support member (30) having a tilt operating groove (32) in which the other side of the elastic member (20) is contact-supported and one side is inserted into the frame (80) and fixedly supported, and into which the connecting member (10) is inserted;

A fastening member (40) inserted through the inner side (A) of the climbing shell (70) to allow rotation of the climbing shell (10) and the elastic member (20) and having an end (40a) fastened to the tilt support member (30);

A pin portion (50) is installed so that its end is in contact with and supported by one side of a tilt support portion (30) by penetrating the joint portion (10) on the inner side (A) of the climbing shell, thereby enabling tilting of the climbing shell (70) without a separate assembly tool, and facilitating the combination of the climbing shell (70) and the frame (80).

The above-mentioned back shell (70) can be configured to support the user's back by installing various materials such as mesh, fabric, synthetic resin, and cushioning.

The above-mentioned connecting part (10) is integrally provided on both sides or one side of the climbing shell (70), as shown in FIGS. 2 and 3, to enable connection of the climbing shell (70) and the tilt support part (30) by the fastening part (40), setting of the initial pressure of the climbing shell (70) by the pin part (50), and support and acceptance of the elastic part (20), and at the same time, to have a rotation axis function when the climbing shell (70) is tilted.

The above-mentioned connecting part (10) has a connecting hole (11) formed protruding outward (B) of the climbing shell to be inserted into the tilt support part (30),

A support groove (12) formed within the connecting portion (11) and into which an elastic member (20) is inserted and supported,

A fastening hole (13) formed by penetrating the climbing shell (70) to be connected to the support home (12) and into which a fastening part (40) is inserted,

It includes an insertion hole (14) formed by penetrating the climbing shell (70) so as to be spaced apart from the support home (12) and into which a pin portion (50) is inserted and supported.

The above connecting member (11) has a rotation axis function when the climbing shell (70) is tilted, and includes a first connecting member (15) that is inserted into the tilt support member (30) and formed protruding so as to have a support groove (12), and a second connecting member (16) that is formed protruding along the perimeter of the first connecting member (15) to limit the tilting range of the climbing shell (70).

The above first connecting member (15) is formed in a cylindrical shape by protruding from the climbing shell (70) so that a support groove (12) is provided inside.

The second connecting member (16) is formed along the outer circumference of the first connecting member (15) with a predetermined length so as not to interfere with the insertion hole (14) (so that the insertion hole is not closed), and is provided with a first engaging member (16a) that is supported by contact with the pin (50) at one end, and a second engaging member (16b) that is supported by contact with one side of the tilt support member (30) when the climbing shell (70) is tilted is provided at the other end.

In addition, as shown in Fig. 2, the above connecting member (11) is preferably formed so that the first connecting member (15) protrudes further in the outer (B) direction of the climbing shell (70) than the second connecting member (16) with respect to the climbing shell (70) and the first connecting member (15) and the second connecting member (16) have a step, so as to be connected in multiple stages to the tilt support member (30).

In this way, when the first and second connecting members (15, 16) are formed in multiple stages with different protrusion lengths and steps, the connecting member (10) and the tilt support member (30) of the climbing shell are connected in multiple stages, so that stable support and acceptance of the elastic member (20) are achieved, and the tilting operation of the climbing shell (70) is stably and smoothly performed with the connecting member (11) as the rotation axis.

As shown in Fig. 2, the above-mentioned support groove (12) includes a first support groove (12a) in which an elastic member (20) is inserted and received and a fastening hole (13) is connected, and a second support groove (12b) that is formed in communication with the first support groove (12a) and into which one side of the elastic member (20) is inserted and supported. At this time, the second support groove (12b) may be formed in the first connecting member (15) or may be formed to span the first and second connecting members (15, 16).

The above fastening hole (13) is intended to connect the climbing shell (70) and the tilt support member (30) by the fastening member (40), and as illustrated in FIG. 3, the fastening member (40) is laterally inserted from the inner side (A) of the climbing shell to the outer side (B) of the climbing shell, and is formed by penetrating the climbing shell (70) so that the fastening member (40) is prevented from being detached in the outer side (B) of the climbing shell. At this time, it is preferable that the fastening hole (13) is formed so that the fastening member (40) does not protrude in the inner side (A) of the climbing shell, that is, so that the exposure of the fastening member (40) is prevented.

As shown in FIGS. 2 and 3, the above insertion hole (14) is formed by penetrating the plate shell (70) so that the pin portion (50) is inserted laterally from the inner side (A) to the outer side (B) of the plate shell, and the pin portion (50) is prevented from being detached in the outer side (B) of the plate shell. The insertion hole (14) is provided at a predetermined radius from the fastening hole (13) so as not to be accommodated in the support groove (12).

At this time, the insertion hole (14) is formed to a predetermined size so that when the pin (50) is inserted through, one side of the pin (50) is supported by contact with one side of the connecting port, that is, the first engaging port of the second connecting port, and so that no clearance occurs between the pin (50) and the insertion hole.

In addition, as shown in FIG. 2 and FIG. 9, a first fixing groove (14a) and a second fixing groove (14b) are provided in the insertion hole (14) to support the position of the pin portion (50). At this time, the first fixing groove (14a) is positioned in the inner (A) direction of the climbing shell, and the second fixing groove (14b) is formed in communication with the insertion hole (14) so as to be positioned in the outer (B) direction of the climbing shell.

In addition, as shown in FIG. 2, the above-mentioned connecting part (10) may further be provided with a settling protrusion (17) along the periphery of the connecting part (11) so that the tilt support part (30) can be stably connected and rotated.

The above elastic member (20) has a function of stably supporting the climbing shell (70) and providing a predetermined elastic force so that the climbing shell (70) can tilt. One side (21) of the elastic member is inserted and secured into the support groove (12) of the joint part (10) of the climbing shell, that is, the second support groove (12b) of the support groove, so that it is in contact with and supported by the second side of the support groove, and the other side (22) of the elastic member is in contact and supported by one side of the tilt support part (30). At this time, the elastic member (20) may be formed of a torsional spring.

The above tilt support member (30) supports the climbing shell (70) and the elastic member (20) so that the climbing shell (70) can tilt, and as shown in FIGS. 3 and 5 to 7, includes a supporting body (31) that is provided with a fastening hole (33) for screw fastening at the end of the fastening member (40) and is coupled to the frame (80), a tilt operating groove (32) formed in the supporting body (31) so that the fastening hole (33) is received and the tilting range of the climbing shell (70) is limited, and an elastic supporting groove (34) that is formed in communication with the tilt operating groove (32) and in which the other side (22) of the elastic member is inserted and supported by contact.

The above-mentioned support body (31) is provided with a coupling member (37) that is fixedly installed on a frame (80), and the coupling member (80) can be configured to be bolted to the frame (80), fitted, or fitted to the frame and then bolted.

The above-mentioned joint (37) can be configured so that one side is inserted into the hollow part of the frame while the end of the frame is in contact with and supported, and the inserted side is fixed by a fixing bolt (82) that is fastened to a bolt hole (81) of the frame, as shown in (a) of FIG. 5.

The above-mentioned joint (37) is inserted into the hollow space (80a) of the frame with one side thereof while the end (80a) of the frame is in contact with and supported.

A fixing screw (38) may be fastened longitudinally to the center of one side inserted into the hollow (80a) of the frame, and the screw head (38a) of the fixing screw may be hooked to one side of a fixing bolt (82) fastened to a bolt hole (81) of the frame to prevent separation from the frame.

The above-mentioned fixed screw (38) includes a screw body (38b) that is fastened to a joint (10) and a screw head (38a) provided on one end of the screw body (38b). The screw body (38b) may be configured to have screw threads provided on the entire body or on the end so as to be fastened to a screw fastening hole (37d).

For example, the above-mentioned joint (37) is inserted into the hollow part of the frame with one side thereof while the end (80a) of the frame is supported by contact, as shown in (b) of Fig. 5.

A screw fastening hole (37d) is provided in the center of one side to be inserted into the hollow portion (80a) of the frame in the longitudinal direction, and a fixing screw (38) is fastened to the screw fastening hole (37d) so that the screw head (38a) is spaced apart from the end (37f) of the coupling member by a predetermined distance, and one side of a fixing bolt (82) fastened to the bolt hole (81) of the frame is inserted between the end (37f) of the coupling member inserted into the hollow portion of the frame and the screw head (38a) of the fixing screw, so that the screw head (38a) of the fixing screw is supported by being hooked to the fixing bolt (82).

In addition, the above-mentioned joint (37) is inserted into the hollow part (80a) of the frame with one side thereof while the end (80d) of the frame is supported by contact, as shown in (c) of Fig. 5.

A screw fastening hole (37d) is provided in the center of one side to be inserted into the hollow (80a) of the frame in the longitudinal direction, a fixing screw (38) is fastened to the screw fastening hole (37d) so that the screw head (38a) is in contact and supported at the end (37f) of the coupling member, and an open hole (37e) communicating with the screw fastening hole (37d) is provided at one side of the end (37f) of the coupling member where the fixing screw (38) is in contact and supported so that the screw head (38a) of the fixing screw is exposed, and one side of a fixing bolt (82) fastened to the bolt hole (81) of the frame is inserted into the open hole (37e), so that the screw head (38a) of the fixing screw is supported by being hooked to the fixing bolt (82).

In addition, the above-mentioned joint (37) includes a first insert (37a) inserted into the hollow (80a) of the frame, as shown in (d) of Fig. 5,

A second insert (37b) formed to be in contact with the outer surface (80c) of the frame,

It includes a joining hole (37c) formed between the first insert (37a) and the second insert (37b) and into which the end of the frame (80) made of a pipe type is fitted.

The first insert (37a) may be configured such that a screw fastening hole (37d) is formed longitudinally at the center of one side to be inserted into the hollow portion (80a) of the frame, a fixing screw (38) is fastened to the screw fastening hole (37d) so that the screw head (38a) is in contact with and supported at the end, an open hole (37e) communicating with the screw fastening hole (37d) is formed at one side of the end where the fixing screw (38) is in contact with and supported so that the screw head (38a) of the fixing screw is exposed, and one side of a fixing bolt (82) is inserted into a bolt hole (81) of the frame into the open hole (37e) so that the screw head (38a) of the fixing screw is caught and supported by the fixing bolt (82).

In this way, when the coupling member (37) is provided with a coupling hole (37c) and an open hole (37e) is formed at the end of the first insert (37a) so that one side of the fixing bolt is supported by being hooked on the screw head (38a) of the fixing screw, the inner and outer surfaces of the frame are simultaneously supported by the first insert and the second insert, so that the coupling force and supporting force of the frame and the coupling member are improved, and since the screw head of the fixing screw is fastened so as to be in contact with and supported by the end of the first insert, the assembly and fastening force of the fixing screw are maintained at a constant level, so that the coupling force of the coupling member for the frame, i.e., the tilt support member, is improved.

Additionally, the type of the above-mentioned fixed bolt (82) is not limited.

For example, the fixing bolt (82) may be a flat head bolt, a wrench bolt, a headless bolt, etc., and when considering usability and appearance, it is preferable to use a headless bolt as shown in Fig. 4.

In addition, it is preferable that the above-mentioned fixing bolt (82) be installed so that the screw head (38a) of the fixing screw is engaged and the screw body (38b) of the fixing screw (38) is pressed.

In this way, when the fixing bolt (82) is installed, an additional load is forcibly applied to the fixing screw in a lateral direction, so that the connecting hole (37) is pressed against the inner surface (80b) of the frame to provide close contact or temporary deformation to the end of the connecting hole where the fixing screw is fastened within the hollow part of the frame, thereby further improving the bonding strength of the tilt support member to the frame.

The above tilt operation home (32) is a home into which the connecting port (11) of the joint is rotatably inserted, and as shown in FIG. 3 and FIG. 5 to FIG. 7, includes a first tilt home (35) into which the first connecting port (15) of the connecting port is inserted and rotated and which has a fastening port (33) in the center, and a second tilt home (36) which is in communication with the first tilt home (35) and into which the second connecting port (16) of the connecting port is inserted and rotated.

The second tilt home (36) is provided with a first catch (36a) on one end that is supported by a pin (50) protruding through the insertion hole (14), and a second catch (36b) on the other end that is supported by a second side of the second connecting portion, that is, the second catch (16b), when the climbing shell (70) tilts, thereby limiting the tilting range of the climbing shell (70).

That is, as shown in Fig. 6, the second tilt home (36) is configured such that the distance (arc length, AL1) from the first catch (36a) to the second catch (36b) is greater than the distance (arc length, AL2) from the first catch (16a) to the second catch (16b) of the second connecting member (16) of the climbing shell, or the distance (arc length, AL2`) from the first rotating catch (66a) to the second rotating catch (66a) attached to the second connecting member of the second rotating table (66) of the rotating part, which will be described later, to the second rotating catch (66a), plus the width (W) of the pin portion inserted into the insertion hole. That is, the connecting member (10) is assembled into the tilt operating home (32) and the climbing shell is connected by the pin portion (50). When the initial pressure is set, a tilting operating space (S) is provided between the second catch (16b) of the connecting member and the second catch (36b) of the elastic support groove.

At this time, the tilting operation space (S) is not limited in its range, but is configured to have a gap of about 10° to 20° with the center of the fastening part (40) as the vertex so that the climbing shell (70) can tilt within a range of about 10° to 20° from the initial pressure setting state, and is preferably configured to have a gap of about 13° to 18°.

Figure 6 (a) shows the configuration of the connecting portion, the supporting groove, and the insertion hole of the joint, Figure 6 (b) shows the configuration of the rotating connecting member and the connecting insertion hole of the rotating portion, and Figure 6 (c) shows the configuration of the tilt operating groove of the tilt support portion.

The above elastic support groove (34) is formed at a predetermined depth in the support body (31) so as to be positioned between the first catch (36a) and the second catch (36b) of the second tilt groove, as shown in FIGS. 3, 6, and 7, so as to facilitate the insertion and installation of the elastic part (20). That is, the above elastic support groove (34) is formed in the support body (31) so as to be connected to the first tilt groove (35) and open in the direction of the climbing shell, so that the other side (22) of the elastic part is inserted laterally.

The tilt support member (30) configured as described above may be configured independently and fixedly supported on a frame (80) as shown in FIG. 1, or may be configured integrally with an armrest (90) and fixedly supported on a hollow support frame (30`) connected to a frame (80) or leg member (91) as shown in FIG. 13. At this time, the armrest (90) may be configured in various shapes and structures.

The above fastening member (40) is used to connect the climbing shell (70) to the tilt support member (30) so that it can rotate (tilt), and as shown in FIGS. 2 to 4, the end is screw-fastened to the fastening hole (33) of the tilt support member (30) through the fastening hole (13) of the joining member (10) on the inner side (A) of the climbing shell (70).

In addition, a bush (41) may be additionally installed between the above-mentioned fastening portion (40) and the fastening hole (13) of the climbing shell to ensure smooth tilting operation of the climbing shell.

The fastening member (40) that is connected as described above may be formed of, for example, a limit bolt.

The above pin (50) is used to set the initial pressure of the climbing shell (70) and is supported within the insertion hole (14) of the joint.

The above pin portion (50), as shown in FIGS. 2, 3 and 11, is inserted into the second tilt groove (36) of the tilt operation groove so that one end thereof is supported by the second catch (36b) through the insertion hole (14) of the joint portion, and is supported by the first catch projection and the second catch projection so as to prevent separation within the insertion hole (14) of the joint portion.

That is, the pin portion (50), as illustrated in FIGS. 8 and 9, includes a pin body (53) whose end (53a) is inserted into the tilt support portion (30) through the insertion hole (14) of the climbing shell coupling portion (10), a first catch projection (51) that is formed protruding from one end of the pin body and is inserted into and supported by a first fixing groove (14a) of the insertion hole (14) to prevent the pin body (53) from coming off in the direction from the inner side (A) to the outer side (B) of the climbing shell, and a second catch projection (52) that is formed protruding from one end of the pin body and is inserted into and supported by a second fixing groove (14b) of the insertion hole (14) to prevent the pin body (53) from coming off in the direction from the outer side (B) to the inner side (A) of the climbing shell.

The above pin body (53) is provided in a bar or rod type and is configured to be fitted into the insertion hole (14) without any play.

The above first catch (51) is formed by protruding to a predetermined height at one end of the pin body (53), that is, one end in the inner side (A) of the climbing shell, and is inserted into and supported by a first fixing groove (14a) formed with a step and communicating with an insertion hole (14) on the inner side of the climbing shell.

The above second catch (52) is formed in a wedge shape so as to protrude downwardly from the outer side (B) to the inner side (A) of the climbing shell on one side of the pin body (53), and is inserted into and caught in a second fixing groove (14b) formed with a step in the insertion hole (14) of the climbing shell.

At this time, it is preferable that the first catch (51) and the second catch (52) are formed at positions symmetrical to each other with respect to the pin body (53), and the first fixing groove (14a) of the insertion hole has a shape corresponding to the first catch (51), and the second fixing groove (14b) of the insertion hole has a shape corresponding to the second catch (52).

As described above, the pin (50) provided with the first catch (51) and the second catch (52) can be easily inserted and installed in the insertion hole (14) from the inner side (A) to the outer side (B) of the climbing shell, and the position of the pin (50) in the insertion hole (14) is supported by the first catch (51) and the second catch (52). Therefore, even if repeated contact impact occurs between the end of the pin body (53) of the pin and the tilt support part due to the tilting operation with respect to the climbing shell (70), the pin (50) is prevented from coming off in the insertion hole (14).

In addition, as shown in FIGS. 2 to 4, the present invention may further include a rotating part (60) installed between the joining part (10) of the climbing shell (70) and the tilt support part (30).

The above-mentioned rotating part (60) is equipped with a bushing function to enable the tilting of the climbing shell (70) to be performed more smoothly, a function to ensure that the connecting part (10) and the tilt support part (30) are tightly connected without any play, a function to prevent damage caused by direct contact between the connecting part (10) and the tilt support part (30), and a function to prevent the elastic part (20) from being detached from the support groove (12) of the connecting part.

The above-mentioned rotating part (60) is configured to smoothly connect the climbing shell (70) and the tilt support part (30) by the fastening part (40) and to smoothly set the initial pressure of the climbing shell (70) by the pin part (50), and is connected so as to be covered over the joining part (10) of the climbing shell (70) and tilts (rotates) integrally with the joining part (10).

That is, the above-mentioned rotating part (60) is a rotating body (63) on which a climbing shell (70) or a joint is installed, as shown in FIG. 6, FIG. 7 and FIG. 10,

A connecting rotary table (61) that is integrally connected to the rotating body (63) and inserted into the tilt support member (30) so that the connecting hole (11) of the joint part can be accommodated,

A connecting through hole (62) formed by penetrating the connecting rotary member (61) to communicate with the support groove (12) of the joint,

It can be configured to include a connecting insertion hole (64) formed by penetrating the rotating body (63) so as to be connected to the insertion hole (14) of the joint part.

The above rotating body (63) is formed so that no gap occurs between the climbing shell and the tilt support member. At this time, the rotating body (63) may be formed as a flange type so as to be seated on the seating protrusion (17) of the joint member.

The above-mentioned connecting rotary table (61) has a shape corresponding to the connecting hole (11) so that the connecting hole (11) is accommodated inside, and is formed integrally with the rotating body (63). That is, the connecting rotary table (61) can be configured to include a first rotary table (65) in which the first connecting hole (15) of the connecting hole is accommodated, and a second rotary table (66) in which the second connecting hole (16) of the connecting hole is accommodated.

In addition, the second rotary table (66) is provided with a first rotary catch (66a) corresponding to the first catch (16a) of the second connecting member at one end, and a second rotary catch (66b) corresponding to the second catch (16b) of the second connecting member at the other end, and is installed so as to be covered over the second connecting member (16).

In addition, the above-mentioned rotating part (60) is provided with two connecting insertion holes (64) so that it can be applied to both the left and right sides of the chair.

When the rotating member (60) configured as described above is placed between the connecting member (10) and the tilt support member (30), the first engaging member (16a) of the connecting member is not contacted and supported by the pin member (50), but the first rotating engaging member (66a) of the rotating member is contacted and supported by the pin member (50), and when the climbing shell (70) tilts, the second engaging member (16b) of the connecting member is not contacted and supported by the second engaging protrusion (36b) of the tilt support member, thereby limiting the tilting range, but the second engaging member (66b) of the rotating member is contacted and supported by the second protrusion (36b) of the tilt support member, thereby limiting the tilting range of the climbing shell (70).

In addition, when a rotating part (60) is placed between the joint part (10) and the tilt support part (30), the detachment and left-right play of the elastic part (20) from the support groove (12) is prevented by the rotating part (60), thereby providing the effect of maintaining the tilting operation of the climbing shell at a constant level.

According to the present invention, which is configured as described above, as shown in FIG. 11, an elastic part or an elastic part and a rotating part are assembled to a joining part of a climbing shell, and the joining part of the climbing shell is inserted into a tilt operation groove of a tilt support part so that the other side of the elastic part is in contact with and supported by one side of a tilt support part, and then the tilt support part is assembled to the climbing shell by a fastening part (40) on the inner side (A) of the climbing shell.

When the tilt support member is assembled in this manner, the insertion hole of the joint member is closed by the elastic force of the elastic member, that is, it is maintained in the initial assembly state as shown in (b) of Fig. 7 and (a) of Fig. 12.

When force is applied to the climbing shell or the tilt support member in the above initial assembly state to rotate the elastic member so that it is compressed, the insertion hole of the connecting member opens so as to communicate with the elastic support groove of the tilt support member, and when the pin member is inserted into the opened insertion hole and the force applied to the climbing shell or the tilt support member is removed, the climbing shell is supported by the elastic force of the elastic member, that is, it is maintained in the initial pressure setting state as illustrated in (b) of FIG. 12, and in this initial pressure setting state, an operating space (S) is formed between the connecting member and the tilt support member so that the climbing shell can tilt as illustrated in (c) of FIG. 7.

At this time, the pin part is supported by the elastic force of the elastic part in contact with the insertion groove of the climbing shell joint, and at the same time, the end of the pin part inserted into the elastic support groove of the tilt support part is maintained in a state of being supported by contact with the first catch of the tilt support part.

In this way, when the climbing shell and the tilt support member are assembled in the initial pressure setting state, the chair is assembled by fixing and installing the joint of the tilt support member to the frame as shown in (a) of Fig. 1. At this time, the assembly of the tilt support member to the frame can be performed not only in the initial pressure setting state of the climbing shell and the tilt support member, but also in the initial assembly state.

According to the present invention, in which the backrest shell, the tilt support member, and the frame are assembled as described above, when a user applies force to the backrest, the elastic member is compressed while the tilt support member is firmly fixed and supported to the frame, and a tilting operation is performed within the range of the operating space (S), and when the force applied to the backrest is removed, the backrest returns to the initial pressure setting state by the elastic force of the elastic member while the tilt support member is firmly fixed and supported to the frame.

The present invention is not limited to the specific preferred embodiments described above, and anyone with ordinary skill in the art to which the present invention pertains may make various modifications without departing from the gist of the present invention claimed in the claims, and such modifications are within the scope of the claims.

In addition, since the terms described in the present invention are intended to distinguish one component from another and to aid in understanding the present invention, the components of the present invention are not limited by the terms described.

(10) : Joint (11) : Connection port
(12) : Support groove (12a) : First support groove
(12b): 2nd support groove (13): Fastening hole
(14): Insertion hole (14a): First fixing groove
(14b) : 2nd fixed groove (15) : 1st connecting hole
(16) : Second connecting port (16a) : First hanging port
(16b) : Second catch (17) : Settlement jaw
(20): Elastic part (21): One side of elastic part
(22) : Elastic part other side (30) : Tilt support part
(31) : Support body (32) : Tilt operation home
(33) : Fastening hole (34) : Elastic support groove
(35) : 1st tilt home (36) : 2nd tilt home
(36a) : 1st catch (36b) : 2nd catch
(37) : Joint (37a) : First insert
(37b): Second insert (37c): Joint hole
(37d): Screw hole (37e): Open hole
(37f) : End (38) : Set screw
(38a): Screw head (38b): Screw body
(40) : Fastening part (40a) : End
(41) : Bush (50) : Pinbu
(51) : 1st stumbling block (52) : 2nd stumbling block
(53): Pin body (53a): Pin body end
(60) : Rotating part (61) : Connecting rotary table
(62) : Connection hole (63) : Rotating body
(64) : Connection insertion hole (65) : 1st rotation table
(66) : 2nd turntable (70) : Climbing shell
(80) : Frame (80a) : Hollow
(80b) : Inside (80c) : Outside
(80d) : End (81) : Bolt hole
(82) : Fixed bolt (90) : Armrest
(100) : Chair

Claims (15)

A joint (10) provided in a climbing shell (70);
An elastic member (20) whose one side is fitted and supported by a connecting member (10) so as to be located on the outer side (B) of the climbing shell (70);
A tilt support member (30) in which the other side of the elastic member (20) is contact-supported and one side is inserted into the frame (80) and fixedly supported, and into which a connecting member is inserted;
A fastening member (40) inserted through the inner side (A) of the climbing shell (70) to allow rotation of the joint member (10) and the elastic member (20) and having an end fastened to the tilt support member (30);
Including a pin part (50) installed so that the end is in contact with and supported by one side of the tilt support part (30) through the insertion hole (14) of the joint part (10) on the inner side (A) of the climbing shell;
The above insertion hole (14) includes a first fixing groove formed to be positioned in the inner (A) direction of the climbing shell, and a second fixing groove formed to be positioned in the outer (B) direction of the climbing shell.
The above pin portion (50) comprises a pin body (53) whose end is inserted into the tilt support portion (30) through the insertion hole (14) of the back panel joint portion (10), a first catch projection (51) that is formed by protruding from one end of the pin body and is inserted into a first fixing groove of the insertion hole and supported so as to prevent the pin body (53) from coming off in the direction from the inside (A) to the outside (B) of the back panel shell, and a second catch projection (52) that is formed by protruding from one side of the pin body and is inserted into a second fixing groove provided on one side of the insertion hole (14) and supported so as to prevent the pin body (53) from coming off in the direction from the outside (B) to the inside (A) of the back panel shell. This is an assembly-type chair that is easy to assemble and disassemble.
In claim 1;
The connecting part (10) includes a connecting hole (11) formed to protrude from the outside (B) of the climbing shell so as to be inserted into the tilt support part, a support groove (12) formed in the connecting hole (11) and into which an elastic part (20) is inserted and supported, a fastening hole (13) formed to penetrate the climbing shell (70) so as to be connected to the support groove (12) and into which a fastening part (40) is inserted, and an insertion hole (14) formed to penetrate the climbing shell (70) so as to be spaced apart from the support groove (12) and into which a pin part (50) is inserted and supported.
A tilt support member (30) is a modular chair that is easy to assemble and disassemble, characterized in that it includes a support body (31) that is coupled to a frame (80) and has a fastening hole (33) at the end of a fastening member (40) that is screw-fastened, a tilt operation groove (32) that is formed in the support body (31) so that the fastening hole (33) is received and the tilting range of the back shell (70) is limited, and an elastic support groove (34) that is formed in communication with the tilt operation groove (32) and in which the other side (22) of the elastic member is inserted and supported by contact.
In claim 2;
The connecting member (11) includes a first connecting member (15) that is inserted into the tilt operation groove and formed protruding so as to have a support groove (12), and a second connecting member (16) that is formed protruding along the perimeter of the first connecting member (15) to limit the tilting range of the climbing shell (70).
A tilt-operating home (32) is characterized by including a first tilt home (35) into which a first connecting port (15) of a connecting port is inserted and rotated and which has a fastening port (33) in the center, and a second tilt home (36) which is in communication with the first tilt home (35) and into which a second connecting port (16) of a connecting port is inserted and rotated. The tilt-operating home is characterized by including a first tilt home (35) into which a first connecting port (15) of a connecting port is inserted and rotated.
In claim 3;
A connecting member (11) is formed so that the first connecting member (15) protrudes further in the outer (B) direction of the connecting member (70) than the second connecting member (16) with respect to the climbing shell (70), and the first connecting member (15) and the second connecting member (16) have a step, and the first tilt groove and the second tilt groove of the tilt operating groove are formed to correspond to the first connecting member and the second connecting member of the connecting member, respectively, so that the connecting member and the tilt operating groove are connected in multiple stages, and is characterized by an easy-to-assemble and disassemble assembly chair.
In claim 3 or claim 4;
The second connecting member (16) is provided with a first engaging member (16a) that is supported by contact with a pin (50) at one end, and a second engaging member (16b) that is supported by contact with one end of a tilting support member (30) when the climbing shell (70) is tilted at the other end.
A modular chair that is easy to assemble and disassemble, characterized in that the second tilt home (36) is provided with a first catch (36a) on one end that is supported by a pin (50) protruding through an insertion hole (14), and a second catch (36b) on the other end that is supported by a second catch (16b) of a second connecting member when the back panel shell (70) tilts.
In claim 5;
A second tilt home (36) is formed so that the distance (arc length, AL1) from the first catch (36a) to the second catch (36b) is greater than the distance (arc length, AL2) from the first catch (16a) to the second catch (16b) of the second connecting member (16) plus the width (W) of the pin portion inserted into the insertion hole, so that when assembled in a state where the initial pressure of the climbing shell is set by the pin portion (50), an operating space (S) is provided between the second catch (16b) of the connecting member and the second catch (36b) of the elastic support home, which is characterized in that the chair is easy to assemble and disassemble.
delete In claim 1;
A modular chair that is easy to assemble and disassemble, characterized in that the second catch (52) is formed in a wedge shape so as to slope downward from the outer side (B) to the inner side (A) of the backing shell on one side of the pin body (53), and the second fixing groove (14b) is formed with a step at a predetermined depth within the insertion hole (14).
In claim 1;
An assembly-type chair that is easy to assemble and disassemble, characterized in that a rotating part (60) is additionally installed between a connecting part (10) and a tilt support part (30).
In claim 9;
The rotating part (60) has a rotating body (63) that is mounted on the joint,
A connecting rotary table (61) that is integrally connected to the rotating body (63) so that the joint can be accommodated and inserted into the tilt support member (30),
A connecting through hole (62) formed through the connecting rotary table (61) to allow installation of an elastic member on the tilt support member,
An assembly-type chair that is easy to assemble and disassemble, characterized by including a connecting insertion hole (64) formed by penetrating a rotating body (63) so as to be connected to an insertion hole (14) of a joint.
In claim 1;
A chair that is easy to assemble and disassemble, characterized in that the tilt support member (30) is formed integrally with the armrest (90) and is fixedly supported on the frame (80).
In claim 1;
A tilt support member (30) is a modular chair that is easy to assemble and disassemble, characterized in that it includes a support body (31) that is coupled to a frame (80) and has a fastening hole (33) at the end of a fastening member (40) that is screw-fastened, a tilt operation groove (32) that is formed in the support body (31) so that the fastening hole (33) is received and the tilting range of the back shell (70) is limited, and an elastic support groove (34) that is formed in communication with the tilt operation groove (32) and in which the other side (22) of the elastic member is inserted and supported by contact.
In claim 12;
The support body (31) is provided with a joint (37) fixedly installed on the frame (80), and the joint (37) is inserted into the hollow part of the frame with one side thereof while the end (80a) of the frame is in contact with and supported.
A modular chair that is easy to assemble and disassemble, characterized in that a fixing screw (38) is fixed longitudinally at the center of one side inserted into the hollow (80a) of the frame, and the screw head (38a) of the fixing screw is caught and supported by a fixing bolt fixed to a bolt hole (81) of the frame to prevent separation from the frame.
In claim 13;
The joint (37) comprises a first insert (37a) inserted into the hollow portion (80a) of the frame,
A second insert (37b) formed to be in contact with the outer surface (80c) of the frame,
It includes a joining hole (37c) formed between the first insert (37a) and the second insert (37b) and into which the end of the frame (80) made of a pipe type is fitted.
The above first insert (37a) is characterized in that a longitudinal screw fastening hole (37d) is provided at the center of one side to be inserted into the hollow (80a) of the frame, a fixing screw (38) is fastened to the screw fastening hole (37d) so that the screw head (38a) is in contact with and supported at the end, an open hole (37e) communicating with the screw fastening hole (37d) is provided at one side of the end where the fixing screw (38) is in contact with and supported so that the screw head (38a) of the fixing screw is exposed, and one side of a fixing bolt (82) fastened to the bolt hole (81) of the frame is inserted into the open hole (37e) so that the screw head (38a) of the fixing screw is caught and supported by the fixing bolt (82). This is a modular chair that is easy to assemble and disassemble.
In claim 13 or claim 14;
A modular chair that is easy to assemble and disassemble, characterized in that the fixed bolt (82) is installed so that the screw head (38a) of the fixed screw is engaged and supported within the hollow part of the frame while pressurizing the body (38b) of the fixed screw (38).