Tiltable armrest assembly and chair comprising same

Abstract

The present invention relates to an armrest assembly and a chair comprising the same, and more particularly, to an armrest assembly comprising: a fixed bracket part fixed to both left and right end parts of a seat plate part and having an inner space open toward the upper side; a lifting part which is movably arranged on the upper part of the fixed bracket part in the vertical direction; an inclined arm pad part which is configured to be capable of inclining and sliding in the front-back direction at the upper end part of the lifting part; and a safety cover part which is linked when the inclined arm pad part is inclined and does not linked when the inclined arm pad part is slid, and which covers the space between the lifting part and the inclined arm pad part. Wherein a sliding guide slot is formed in the inclined arm pad part, so that the safety cover part can slide in the front-back direction, and the use convenience of a user is greatly improved.

Description

Technical Field

[0001] The present invention relates to a tiltable armrest assembly and a chair including the same, and more particularly, to a tiltable and sliding armrest assembly and a chair including the same which can minimize the inconvenience of a user when a backrest is tilted. Background Art

[0002] Figure 1 This is an assembly example of a part of a chair in which an armrest assembly and a seat plate portion are assembled into one piece according to the prior art.

[0003] Usually, if Figure 1 As shown, the chair comprises: a seat plate portion 10 configured in a cushion shape for a user to sit on; a backrest portion 20 configured up and down at the rear end of the seat plate portion 10 to support the back of the user. A leg portion 30 supported by the ground is provided at the lower portion of the seat plate portion 10, and an armrest 40 on which the user can place his arms can be assembled.

[0004] Here, if Figure 1 As shown, the backrest portion 20 is configured such that the upper end portion can be tilted in the front-rear direction (preferably, rearward) with the lower end portion as the center to improve the convenience of the user, and the armrest 40 is also configured such that the height can be adjusted in the vertical direction according to the height of the user.

[0005] However, according to the chair 1 of the prior art in which the armrest assembly 40 is assembled integrally with the seat panel portion as constructed as described above, when the backrest portion 20 is tilted backward, the user places his arms at an angle backward, but the armrest assembly 40 is configured integrally with the seat panel portion, and actually the angle of the user's arm is different from the angle on the armrest assembly 40, thereby causing inconvenience to the user.

[0006] In addition, when the backrest 20 is tilted backward, the user's arm also moves backward by a predetermined distance, but the armrest assembly 40 can only be adjusted in the vertical direction. From this point of view, there is a problem that the user's arm is relatively far away from the placement portion. Figure 1 As shown, before the backrest 20 tilts, the distance between the backrest 20 and the armrest assembly 40 is "D1", and then when the backrest 20 tilts, the distance is about "D2", so it is expected that the user's arm will be caught or the above-mentioned inconvenience to the user will occur.

[0007] At the same time, although not shown in the accompanying drawings, when the armrest assembly 40 is configured to be able to slide in the forward and backward directions while tilting, a gap is generated between the tilted arm pad portion in the structure of the armrest assembly 40 and the fixed frame that fixes the tilted arm pad portion when tilted, and the user's fingers and the like are caught in the gap, thereby posing a risk of injury. Summary of the invention

[0008] (Problem to be solved)

[0009] The present invention is proposed to solve the above-mentioned technical problems, and its purpose is to provide an armrest assembly with adjustable height and a chair including the same, so that the tilt angle of the tilted arm pad of the armrest assembly can be adjusted while sliding in the forward and backward directions according to the tilt angle of the backrest.

[0010] At the same time, another object of the present invention is to provide the following height-adjustable armrest assembly and a chair including the same, which are designed to make the safety cover only linked to the tilting action when the tilting arm pad is tilted and slid, thereby preventing the user from being injured.

[0011] The technical problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

[0012] (Methods of solving the problem)

[0013] According to an embodiment of the armrest assembly of the present invention, it includes: a fixed bracket part, which is fixed to the left and right ends of the seat plate part and has an internal space opened to the upper side; a lifting part, which is movably arranged on the upper part of the fixed bracket part in the up-down direction; a tilting arm pad part, which is arranged to be tiltable and slidable in the forward and backward directions at the upper end of the lifting part; and a safety cover part, which is linked when the tilting arm pad part is tilted and is not linked when it slides, and covers the space between the lifting part and the tilting arm pad part.

[0014] Here, a sliding guide slot may be formed in the inclined arm pad portion so that the safety cover portion can slide in a forward and backward direction.

[0015] In addition, the safety cover may include a guide protrusion formed to be guided by the sliding guide slot so as to be stuck in a tilting direction for the tilt arm pad, and the sliding direction is for the tilt arm pad to be able to slide in a front-rear direction.

[0016] In addition, the tiltable armrest assembly also includes a tilt joint portion, which connects the lifting portion and the tilt arm pad portion to each other, and at the same time sets the tilt rotation point of the tilt arm pad portion at the rear with the front-rear middle portion as the center.

[0017] In addition, the tilting joint may include: a rotating joint, which is integrally formed with the upper end of the lifting part and provides the tilting rotation point of the tilting arm pad; a rotating connection, the lower end of which is hingedly fixed to the inside of the lifting part and the upper end is hingedly fixed to the tilting arm pad, and the front end of the tilting arm pad is rotated in the up and down direction according to the external force provided by the user.

[0018] In addition, the rotating joint is slidably coupled to a rear end slot formed inside the inclined arm pad.

[0019] In addition, the tilting arm pad portion includes a coupling pad and a supporting pad, the coupling pad is coupled to the upper end portion of the lifting portion, and the supporting pad is coupled to the upper portion of the coupling pad and supports the user's arm; the safety cover portion is a sliding guide groove formed in a sliding direction between the coupling pad and the supporting pad to clamp the guide protrusion in a tilting direction, and can then be tilted in conjunction with the tilting arm pad portion.

[0020] In addition, a U-shaped safety space opened toward the rear may be formed between the upper end of the lifting portion and the safety cover.

[0021] One embodiment of a chair including an armrest assembly according to the present invention includes: a seat plate portion for a user to sit on; a pair of armrest assemblies arranged at the left and right ends of the seat plate portion for the user to place his arms; a backrest portion arranged at the rear end of the seat plate portion, and the upper end portion can be tilted in the front-to-back direction with the lower end portion as the center. The pair of armrest assemblies include: a fixed bracket portion fixed to the left and right ends of the seat plate portion and having an internal space open to the upper side; a lifting portion arranged movably in the upper part of the fixed bracket portion in the upper and lower directions; a tilting arm pad portion arranged so as to be tiltable and slidable in the front-to-back direction at the upper end portion of the lifting portion; and a safety cover portion that is linked when the tilting arm pad portion is tilted and not linked when it slides, and covers the space between the lifting portion and the tilting arm pad portion.

[0022] Here, a sliding guide slot may be formed in the inclined arm pad portion so that the safety cover portion can slide in a forward and backward direction.

[0023] (Effects of the Invention)

[0024] According to an embodiment of the armrest assembly and the chair including the same, the tilting angle of the armrest assembly is adjusted while sliding in the forward and backward directions in accordance with the tilting angle of the backrest, and the structure is designed so that when the tilting arm pad is tilted and slid, the safety cover is only linked to the tilting action, thereby having the effect of preventing the user from being injured. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The present invention is an example of assembling a part of a chair in which an armrest assembly and a seat plate portion are assembled into one piece according to the prior art;

[0026] Figure 2 is a perspective view showing a portion of the appearance of an armrest assembly and a chair including the same according to an embodiment of the present invention;

[0027] Figure 3 is a perspective view showing a state in which the seat plate portion is combined with the armrest assembly;

[0028] Figure 4 yes Figure 3 Side view of

[0029] Figure 5 It is shown Figure 2 A perspective view of a handrail assembly in a structure of

[0030] Figure 6a and Figure 6b yes Figure 5 An exploded perspective view of a handrail assembly in a structure of FIG.

[0031] Figure 7 and Figure 8 It is shown Figure 5 A cutaway perspective view and a cross-sectional view of the internal structure of the lifting portion and the tilting arm pad portion in the structure;

[0032] Fig. 9 It is shown Figure 5 A cross-sectional view of the tilting and sliding state of the tilting arm pad and the safety cover in the structure;

[0033] Fig.10 It is shown by Figure 5 A cross-sectional view of the height adjustment structure of the lifting part in the structure.

[0034] (Explanation of Reference Numerals)

[0035] 1: Chair 100: Armrest assembly

[0036] 130: Seat cushion joint block 140: Tilt arm pad

[0037] 141: Fixed bracket 144: Lifting body

[0038] 145a: Combination pad 145b: Support pad

[0039] 145c: Inner pad 146: Rear end slot

[0040] 148: Sliding guide slot 150: Lifting portion

[0041] 151: Lifting box 152: Locking shell

[0042] 153: Guide plate 154: Rotation lock

[0043] 154a: Locking pin 155: Lifting connection part

[0044] 158: Lifting button part 210: Safety cover part

[0045] 220: Rotational coupling portion 221: Elastic component

[0046] 230: Rotating connection DETAILED DESCRIPTION

[0047] Hereinafter, an adjustable height armrest assembly and a chair including the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0048] In attaching reference numerals to the components of the various drawings, it should be noted that for the same components, even if they are shown in different drawings, they should have the same reference numerals as much as possible. In addition, when describing the embodiments of the present invention, if it is determined that the detailed description of the relevant known structure or function hinders the understanding of the embodiments of the present invention, the detailed description will be omitted.

[0049] When describing the components of the embodiments of the present invention, the terms first, second, A, B, (a), (b), etc. may be used. Such terms are only used to distinguish one component from other components, and the nature or order of the components shall not be limited by the terms. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as those conventionally understood by persons with ordinary knowledge in the technical field to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as consistent with the meanings in the relevant technical articles and shall not be interpreted in an ideal or overly formal sense unless clearly defined in this application.

[0050] Figure 2 is a perspective view showing a portion of the appearance of an armrest assembly and a chair including the same according to an embodiment of the present invention; Figure 3 is a perspective view showing a state in which the seat plate portion is combined with the armrest assembly;

[0051] Figure 4 yes Figure 3 Side view of Figure 5 It is shown Figure 2 A perspective view of a handrail assembly in a structure of Figure 6a and Figure 6b yes Figure 5 An exploded stereoscopic view of the handrail assembly in the structure from one side and the other side.

[0052] Reference Figures 2 to 4 According to an embodiment of the present invention, the chair 1 comprises: a seat plate portion 300 for a user to sit on; a backrest portion 400, which is tiltably arranged at the rear end of the seat plate portion 300 in a front-to-back direction (preferably, rearward); a leg portion (not shown, refer to Figure 1 , indicated by the reference numeral 30 , is disposed at the lower end of the seat plate portion 300 and is supported by the ground; a pair of armrest assemblies 100 are coupled to the left and right ends of the seat plate portion 300 .

[0053] For the sake of convenience, a pair of armrest assemblies 100 are identical except that the structures are formed symmetrically with each other in the left-right direction. Figure 2 The description of the armrest assembly 100 disposed at the left end portion of the seat plate portion 300 replaces the description of the armrest assembly disposed at the right end portion.

[0054] like Figures 2 to 6b As shown, a pair of armrest assemblies 100 are provided with seat cushion coupling blocks 130 at the lower ends extending horizontally, and can be firmly fixed to the left and right lower surfaces of the seat plate portion 300 through the seat cushion coupling blocks 130 by means of fastening components not shown.

[0055] like Figures 2 to 6b As shown, the armrest assembly 100 according to an embodiment of the present invention includes: a fixed bracket portion 141, which is fixed to the left and right ends of the seat plate portion 300 and has an internal space 141s opened to the upper side; a lifting portion 150, which is movably arranged on the upper portion of the fixed bracket portion 141 in the up-down direction; a tilting arm pad portion 140, which can be tilted in the front-to-back direction with respect to the upper end of the lifting portion 150; a safety cover portion 210, which is linked when the tilting arm pad portion 140 is tilted, but is not linked when the tilting arm pad portion 140 slides, and covers the space between the lifting portion 150 and the tilting arm pad portion 140.

[0056] Here, the armrest assembly 100 according to an embodiment of the present invention may further include a tilting joint (not marked with a reference numeral), which connects the lifting portion 150 and the tilting arm pad portion 140 to each other, and at the same time allows the tilting arm pad portion 140 and the safety cover portion 210 to tilt together with an arbitrary tilting rotation point as the center, or only allows the tilting arm pad portion 140 to slide in the forward and backward direction.

[0057] like Figure 6a and Figure 6b As shown, the fixing bracket portion 141 can be formed into a curved shape, with the lower side portion extending toward the lower surface side of the seat plate portion 300 with the middle portion as the center to horizontally connect with the above-mentioned cushion connecting block 130, and the upper side portion forming the internal space 141s with the middle portion as the center while extending upward.

[0058] That is, the fixed bracket portion 141 is bent into an "L" shape, and the lower end of the horizontal portion is connected to the lower portion of the seat plate portion 300 through the cushion connecting block 130, and the lifting portion 150 is moved in the up and down directions in the internal space 141s corresponding to the upper end of the vertical portion, thereby being connected to the lifting portion 150 in an adjustable height.

[0059] In the internal space 141s of the fixed bracket portion 141, the lower end portion can be inserted and coupled to the lower portion from the upper side except for the upper end portion of the lifting portion 150. The lifting portion 150 is configured to move in the up-and-down direction within the range of the internal height formed by the internal space 141s of the fixed bracket portion 141, thereby adjusting the overall height of the armrest assembly 100 according to an embodiment of the present invention.

[0060] In more detail, Figure 6a and Figure 6b As shown, the lifting part 150 may include a lifting box 151, and the lifting box 151 is a setting space formed inside to set a rotation lock part 154 and a lifting connection component 155 described later.

[0061] A locking shell 152 and a guide plate 153 can be combined in the internal space 141s of the fixed bracket portion 141. The locking shell 152 is configured to surround one side of the lifting box 151 and is formed with a plurality of card holes 152a in the up and down directions for inserting and clamping the locking pin 154a of the rotating lock portion 154. The guide plate 153 is configured to surround the other side of the lifting box 151 and is fixed to the fixed bracket portion 141 and is formed with a lifting guide slot 153a to guide the up and down movement of the lifting box 151.

[0062] Here, the lock pin 154 a of the rotation lock portion 154 is formed to be rotatable toward the front side in the internal space 141 s of the fixing bracket portion 141 as a portion disposed within the rotation radius of the rotation lock portion 154 .

[0063] A hook end 153 b is protrudingly disposed on the outer side surface of the lower end of the guide plate 153 , and a hook fastening groove (not shown) may be disposed on the lower side of the inner space 141 s of the fixing bracket portion 141 to hook and fasten the hook end 153 b .

[0064] That is, the locking shell 152 and the guide plate 153 are in a state of being combined with each other, and the hook end 153b protruding outward on the outer surface of the lower end of the guide plate 153 is hooked and fastened to the hook fastening groove arranged on the inner side of the lower end of the internal space 141s of the fixed bracket part 141 for combination.

[0065] The guide plate 153 may guide the up-and-down movement of the lifting box 151 , and the lifting box 151 may move in the up-and-down direction when the height of the tilt arm pad 140 described later is adjusted.

[0066] To this end, the guide plate 153 is formed with a pair of lifting guide slots 153a spaced in the front-to-rear direction and extending in the up-and-down direction, and a pair of lifting guide protrusions 151a respectively inserted into the pair of lifting guide slots 153a can be formed on the other side of the lifting box 151 covered by the guide plate 153.

[0067] like Figure 6a and Figure 6b As shown, the upper end of the lifting box 151 can be formed integrally with the lifting body 144. The lifting body 144 is a part of the upper end of which is connected to the tilting arm pad 140 through a rotating joint 220 and a rotating connection 230 described later so as to be tiltable or slidable.

[0068] In more detail, the upper end of the lifting body 144 may be coupled to the tilt arm pad 140 via a tilt coupling portion (not shown) including a rotation coupling portion 220 and a rotation connection portion 230 .

[0069] like Figures 2 to 6b As shown, the tilting joint may include: a rotating joint 220, which is formed as a whole with the lifting body 144 described later in the structure of the lifting part 150, and is formed into a hinge shape that provides a tilting rotation point for the tilting arm pad 140 and is configured to protrude upward; a rotating connection part 230, the lower end of which is hingedly fixed to a hinge fixing point 230F inside the lifting part 150, and the upper end of which rotates in the up-and-down direction based on the hinge fixing point 230F of the lower end with the provision of external force, while rotating the front end of the tilting arm pad 140 in the up-and-down direction.

[0070] In more detail, Figure 6a and Figure 6b As shown, the tilt arm pad portion 140 may include: a coupling pad 145a coupled to the upper end portion of the lifting portion 150; a support pad 145b coupled to the upper portion of the coupling pad 145a and supporting the user's arm; and an inner pad 145c coupled between the coupling pad 145a and the support pad 145b to intervene in the coupling of the support pad 145b to the coupling pad 145a.

[0071] Here, a rear end slot 146 may be formed in the coupling pad 145 a , and the rear end slot 146 guides the sliding of the tilt arm pad 140 in the forward and backward directions based on the rotation coupling portion 220 formed integrally with the upper end of the lifting body 144 .

[0072] The upper end of the hinge-shaped rotating joint 220 that forms an inclined rotation point is inserted into the rear end slot 146, and a support wheel (not marked with a figure mark) can be configured at the upper end of the rotating joint 220. The support wheel is stuck in the rear end slot 146 in the inclined direction of the coupling pad 145a, and rotates when sliding in the sliding direction of the coupling pad 145a.

[0073] In more detail, the rear end slot 146 is formed in a boss shape at the left and right ends to clamp a pair of support wheels in an inclined direction, and can be extended in the front-rear direction. Here, the support wheel arranged on the rotation joint 220 is provided with any tilting rotation point within the range of the rear end slot 146 when the tilt arm pad 140 tilts in the up-down direction, and guides the tilt arm pad 140 to slide in the front-rear direction within the range of the rear end slot 146 for a predetermined distance.

[0074] At least one elastic member 221 may be inserted into the rotation joint 220. The at least one elastic member 221 performs the function of imparting elastic force, which is compressed by the external force provided when the user naturally presses the rear end of the tilt arm pad 140 with his elbow while tilting the backrest 120 backward or grabs the tilt arm pad 140 with his hand and pulls it backward, and then restores the tilted tilt arm pad 140 to its original position when the external force is released.

[0075] The support pad 145b and the inner pad 145c cover the upper part of the coupling pad 145a when the coupling pad 145a is inserted and coupled with the above-mentioned rotating coupling part 220 and the rotating connecting part 230 to prevent the rotating coupling part 220 and the rotating connecting part 230 from being observed from the outside, thereby preventing the appearance from being reduced.

[0076] On the other hand, the rotating connection part 230 can be configured as follows: a hinge fixing point 230F is configured to connect to the upper end of the lifting body 144, and the rotating pressure part 230R serving as the upper end is supported by the lower surface of the inner pad 145c in the structure of the tilting arm pad part 140, with the lower end connected to the hinge fixing point 230F as the center.

[0077] Here, the front end of the tilt arm pad 140 is lifted upward or lowered downward according to the rotation angle of the rotation pressing portion 230R of the rotation connecting portion 230, thereby realizing the up and down tilting action.

[0078] As described above, the tilting arm pad 140 is centered on the upper end of the rotating joint 220 that forms an arbitrary tilting rotation point located at the rear end, and is tilted and rotated in the up-and-down direction relative to the front end portion through the rotating connection portion 230. At the same time, the user presses the rear end of the tilting arm pad 140 with his elbow or pulls it backward with the arm placed on its own, and can slide in the forward and backward direction within the limit allowed by the above-mentioned rear end slot 146.

[0079] On the other hand, Figures 2 to 6bAs shown, the armrest assembly 100 according to an embodiment of the present invention may further include a safety cover 210 , which conceals the rotating joint 220 and the rotating connection 230 from the outside and covers the space between the lifting portion 150 and the tilt arm pad 140 .

[0080] The safety cover 210 is fastened to the tilt arm pad 140 via a guide protrusion 240 that protrudes upward to be inserted into the tilt arm pad 140 , and can be tilted in conjunction with the tilt arm pad 140 when the tilt arm pad 140 is tilted.

[0081] In more detail, in the tilt arm pad 140, the combination pad 145a can be extended in the front-rear direction to form a sliding guide slot 148, and the sliding guide slot 148 is inserted into the above-mentioned guide protrusion 240, and is inserted to be stuck in the tilt direction of the tilt arm pad 140, and there is no interference in the sliding direction.

[0082] The guide protrusion 240 disposed on the safety cover 210 may be fastened to a protrusion fastening end 240 h disposed on an upper end portion of the safety cover 210 .

[0083] Here, as described above, the guide protrusion 240 is stuck in the left and right ends of the sliding guide slot 148 when the tilt arm pad 140 tilts in the up-down direction, and the safety cover 210 can be tilted in conjunction. For this purpose, the left and right ends of the sliding guide slot 148 are preferably such that the width of the lower end opening toward the protrusion fastening end 240h is smaller than the outer diameter of the guide protrusion 240 configured in the roller shape.

[0084] Therefore, the safety cover 210 is configured such that the tilting arm pad 140 is stuck by the guide protrusion 240 in the tilting direction, but is not interfered by the sliding guide slot 148 in the sliding direction. Instead, it relatively allows the sliding movement of the tilting arm pad 140 and will not be linked with the sliding movement of the tilting arm pad 140.

[0085] As described above, the safety cover 210 is configured to be tilted in conjunction with the tilt arm pad 140 in the tilt direction of the tilt arm pad 140, and to completely close the space between the tilt arm pad 140 and the lifting portion 150 (especially, the lifting body 144), thereby preventing the user's fingers and other body parts from being caught. However, the safety cover 210 does not need to be linked when the arm pad 140 slides in the forward and backward directions, but because of the safety cover 210, the above-mentioned sliding guide slot 148 has a non-interference structure to prevent interference with the sliding movement of the tilt arm pad 140.

[0086] Here, the safety cover 210 is preferably formed to have a size that covers at least the distance between the front ends of the tilt arm pad 140 and the lifting portion 150 when tilted in conjunction with the tilt arm pad 140 .

[0087] On the other hand, a U-shaped safety space S opened to the rear can be formed between the upper end of the lifting part 150 and the rear end of the safety cover 210. The U-shaped safety space S is used to ensure the safety space when the tilting arm pad 140 slides backward and the rear end of the tilting arm pad 140 approaches the backrest 120 side, regardless of whether the backrest 120 is tilted, so as to prevent the user's body parts from being caught and injured.

[0088] Figure 7 and Figure 8 It is shown Figure 5 A cutaway perspective view and a cross-sectional view of the internal structure of the lifting portion and the tilting arm pad portion in the structure; Fig. 9 It is shown Figure 5 A cross-sectional view of the tilting and sliding state of the tilting arm pad and the safety cover in the structure; Fig.10 It is shown by Figure 5 A cross-sectional view of the height adjustment structure of the lifting part in the structure.

[0089] like Figures 7 to 10 As shown, the armrest assembly 100 according to an embodiment of the present invention may further include lifting locking parts 154, 155, 158, and the lifting locking parts 154, 155, 158 lock or unlock the lifting of the lifting part 150 and the fixed bracket part 141 through a lifting button part 158 ​​that rotates inside the lifting body 144.

[0090] like Figure 7 and Figure 8 As shown, the lifting and lowering locking parts 154, 155, and 158 may include: a lifting and lowering button part 158, which has an upper end hingedly fixed at a predetermined rotation point inside the lifting body 144 that forms the upper appearance of the lifting part 150, and a part of the lower end can be exposed to the outside of the lifting part 150 when rotating; a rotating lock part 154, which forms the lower appearance of the lifting part 150, and is arranged inside the lifting box 151 inserted into the internal space of the fixed bracket part 141, and is formed with a locking pin 154a, which protrudes from the lifting box 151 to the outside through a rotating action and is stuck in any one of the multiple locking holes 152a of the locking shell 152, and the locking shell 152 is configured to cover one side of the lifting box 151; a lifting and lowering connecting part 155, which connects the lifting and lowering button part 158 ​​and the rotating lock part 154.

[0091] The lifting button portion 158 is configured in a module shape exposed outside the lifting body 144 so that the user can actually press it with a finger or the like, and can be connected to the upper end of the lifting connection member 155 .

[0092] Although not shown in the drawings, an elastic member may be interposed in the lifting and lowering button portion 158 , so that when the external force generated by the user's pressing action is eliminated, the lifting and lowering button portion 158 can be rotated and elastically restored to the original position.

[0093] Here, the lifting button portion 158 exposes the inner end to communicate with the internal space of the lifting box 151. The upper end of the lifting connection component 155 is hingedly connected to the lifting button portion 158 inside the lifting box 151, and the lower end of the lifting connection component 155 can be hingedly connected to the rotating lock portion 154.

[0094] The rotating lock part 154 is a component that is rotatably arranged in the internal space of the lifting box 151 with a predetermined hinge point (not marked with a figure mark) as the center. It extends radially from the hinge point to form a locking pin 154a, and can be connected to the lower end of the lifting connection component 155 to transmit rotational force to the rotating lock part 154 without interfering with the locking pin 154a.

[0095] Here, the locking pin 154a of the rotating lock part 154 is exposed to the outside through a pin hole (not marked with a figure mark) formed at the lower end of the lifting box 151, and can be locked in one of the multiple locking holes 152a formed in the locking shell 152 at intervals in the upper and lower directions, and the locking shell 152 is configured to cover one side of the lifting box 151.

[0096] In more detail, the lifting button portion 158 is arranged on the lower side of the front end portion of the lifting body 144 so that the user can easily press it with the index finger or middle finger, etc., and the rotating lock portion 154 can also be arranged so that the locking pin 154a is exposed to the outside or hidden inside through the pin hole formed on the lower side of the front end portion of the lifting box 151.

[0097] Here, if the user presses the lifting button portion 158 to the inside of the lifting body 144, the lifting connection component 155 is pulled upward and the rotating lock portion 154 is rotated in the same direction. At the same time, the locking pin 154a of the rotating lock portion 154 is disengaged from any one of the card holes 152a. The user applies external force to the lifting portion 150 in the upward and downward directions, thereby adjusting the height of the tilt arm pad portion 140.

[0098] Meanwhile, although not shown in the drawings, a predetermined elastic component may be inserted into the rotation lock portion 154 to elastically restore and rotate to the original position according to whether the external force of the user is provided through the lifting connection component 155. Here, the elastic component may be configured to provide elastic force in the direction in which the locking pin 154a of the rotation lock portion 154 is inserted and stuck in any one of the plurality of locking holes 152a when no external force is provided by the user.

[0099] The forward and backward sliding operation process of the tilted arm pad portion 140 of the armrest assembly 100 according to an embodiment of the present invention as constructed above will be described with reference to the accompanying drawings (especially, Fig. 9 ) is briefly explained as follows.

[0100] First, if Fig. 9 As shown in (a), if the user applies an external force pulling backward by pressing with his elbow or placing his arm on the rear end of the tilt arm pad 140, the front end of the tilt arm pad 140 is lifted based on the rotation point of the rotation joint 220. In this case, the upper end of the rotation connection 230 rotates based on the hinge fixing point 230F at the lower end while supporting the tilting movement of the tilt arm pad 140. At this time, the safety cover 210 moves in the tilting direction in conjunction with the tilt arm pad 140 through the guide protrusion 240, while blocking the gap between the lifting part 150 and the tilt arm pad 140, thereby preventing the user's fingers from getting caught in the gap, wherein the guide protrusion 240 is configured to be inserted into the sliding guide slot 148 to get caught in the tilting direction.

[0101] At the same time, Fig. 9 As shown in (b), if the user presses with his elbow or provides an external force pulling backward while placing his arm on the rear end of the tilted arm pad 140, the front end of the tilted arm pad 140 is inserted into the guide protrusion 240 of the safety cover 210 of the sliding guide slot 148 to guide the sliding movement in the front-to-back direction, while the rear end of the tilted arm pad 140 can be inserted into the support wheel of the rotating joint 220 of the rear end slot 146 to guide the sliding movement in the front-to-back direction.

[0102] In this case, the rear end of the tilt arm pad 140 and the rear end of the lift body 144 provide a sufficient safety space S to protect the user's arms, etc., regardless of whether the backrest 400 is tilted or not, so there is an advantage of preventing the user from being injured.

[0103] On the other hand, the height adjustment process of the tilted arm pad 140 of the armrest assembly 100 according to an embodiment of the present invention as constructed as described above will be described with reference to the accompanying drawings (especially, Fig.10 ) is briefly explained as follows.

[0104] first, Fig.10 (a) is the state in which the height of the tilting arm pad 140 is adjusted to the lowest height. In order to reset the height of the tilting arm pad 140 where the user actually places his arm (or elbow), if the lifting button portion 158 is pressed and rotated with the index finger or the middle finger, the lifting button portion 158 rotates around the upper rotation point and is inserted into the interior of the lifting body 144. At this time, if the lifting connection component 155 moves upward along the connection part of the inner end of the lifting button portion 158, the locking pin 154a is disengaged from any one of the multiple card holes 152a of the locking shell 152 while the rotating lock portion 154 is rotated in conjunction.

[0105] Here, the user moves the tilt arm pad 140 to a desired height (for example, Fig.10 When the pressing operation of the lifting button portion 158 is released, the rotating lock portion 154 is rotated and restored to its original position through an elastic component not shown, and at the same time, the locking pin 154a is inserted and fixed in the plurality of card holes 152a that match the pin hole, and locking can be performed through this action.

[0106] As described above, the armrest assembly 100 according to an embodiment of the present invention is sufficient to connect the lifting button portion 158 and the rotating lock portion 154 to each other using the lifting connection component 155 configured in a linear form, thereby providing the advantage that the outer shape design of the lifting button portion 158 and the internal design of the lifting connection component 155 within a narrow range are very easy.

[0107] The above is a detailed description of an adjustable height armrest assembly and a chair including the same according to an embodiment of the present invention with reference to the accompanying drawings. However, the embodiments of the present invention are not necessarily limited to the above-mentioned one embodiment, but of course various modifications and embodiments within the same scope can be realized by a person having ordinary knowledge in the technical field to which the present invention belongs. Therefore, the true scope of rights of the present invention should be defined by the above-mentioned claims.

[0108] Industrial Applicability

[0109] The present invention provides an armrest assembly and a chair including the same. According to the inclination angle of the backrest, the inclination angle of the inclination arm pad of the armrest assembly can be adjusted while sliding in the forward and backward directions. In addition, the structure is designed so that when the inclination arm pad is tilted and slid, the safety cover is only linked to the tilting action, thereby preventing the user from being injured.

Claims

1. A tiltable armrest assembly, comprising: A fixed bracket portion, fixed to the left and right ends of the seat plate portion and having an inner space opened upward; A lifting part is movably arranged on the upper part of the fixed bracket part in the up-down direction; A tilting arm pad portion configured to be tiltable and slidable in a front-rear direction at an upper end portion of the lifting portion; and The safety cover part is linked when the tilting arm pad part tilts and is not linked when the tilting arm pad part slides, and covers between the lifting part and the tilting arm pad part.

2. The tiltable armrest assembly according to claim 1, characterized in that: A sliding guide slot is formed on the inclined arm pad portion so that the safety cover portion can slide in a forward and backward direction.

3. The tiltable armrest assembly according to claim 1, characterized in that: The safety cover comprises a guide protrusion, The guide protrusion is formed to be guided by the sliding guide slot so as to be stuck in the tilting direction for the tilting arm pad portion, and the sliding direction is for the tilting arm pad portion to be able to slide in the front-rear direction.

4. The tiltable armrest assembly according to claim 2, characterized in that: Also includes: The tilting joint part connects the lifting part and the tilting arm pad part to each other, and at the same time sets the tilting rotation point of the tilting arm pad part at the rear with the front-rear middle part as the center.

5. The tiltable armrest assembly according to claim 4, characterized in that: The inclined joint portion comprises: a rotational joint portion, formed integrally with the upper end portion of the lifting portion and providing the tilting rotation point of the tilting arm pad portion; The lower end of the rotating connecting part is hingedly fixed inside the lifting part, and the upper end is hingedly fixed to the tilting arm pad part, and the front end of the tilting arm pad part is rotated in the up and down direction according to the external force provided by the user.

6. The tiltable armrest assembly according to claim 5, characterized in that: The rotating joint is slidably coupled to a rear end slot formed inside the inclined arm pad.

7. The tiltable armrest assembly according to claim 3, characterized in that: The tilt arm pad portion includes a combination pad and a support pad, the combination pad is combined with the upper end of the lifting portion, and the support pad is combined with the upper part of the combination pad and supports the user's arm; The safety cover is formed in a sliding guide slot between the combination pad and the support pad in a sliding direction to clamp the guide protrusion in an inclined direction, thereby being tilted in conjunction with the inclined arm pad.

8. The tiltable armrest assembly according to claim 5, characterized in that: A U-shaped safety space opened rearward is formed between the upper end of the lifting part and the safety cover.

9. A chair, comprising: The seat plate part is for users to sit on; A pair of armrest assemblies, disposed at the left and right ends of the seat plate portion, for the user to place his arms; A backrest portion, arranged at the rear end of the seat plate portion, with the upper end portion being tiltable in a forward and backward direction with the lower end portion as the center; The pair of armrest assemblies comprises: A fixed bracket portion, fixed to the left and right ends of the seat plate portion and having an inner space open to the upper side; A lifting part is movably arranged on the upper part of the fixed bracket part in the up-down direction; A tilting arm pad portion configured to be tiltable and slidable in a front-rear direction at an upper end portion of the lifting portion; and The safety cover part is linked when the tilting arm pad part tilts and is not linked when the tilting arm pad part slides, and covers between the lifting part and the tilting arm pad part.

10. The chair according to claim 9, characterized in that A sliding guide slot is formed on the inclined arm pad portion so that the safety cover portion can slide in a forward and backward direction.

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