KR200292593Y1 - a chair's armrest - Google Patents

Abstract

The present invention relates to an armrest for a chair, and more particularly, in a general armrest for a chair composed of a bracket which is installed at a lower side of the armrest support and a lower plate is connected to the seat plate.

Installing a carbon rod 22 having a locking projection 24 on one side of the vertical support (2) that slides vertically, a plurality of inclined protrusions 422 and guide protrusions 424 and guide grooves 421 on the inner side, Lifting means (B) is formed by the first and second actuators (42) (44) which are formed by return grooves (426) are fitted with the vertical support (2) therebetween (B) to control the height of the armrest (B). );

A ball stopper 449 is installed on the outer circumference of the second actuator 44, and an actuating pin 443 is provided thereon, and a plurality of through holes 62 into which the ball stopper 449 is inserted. Long hole 64 is formed and the operating pin 443 is inserted into the upper portion is formed of a receiving tube (6) coupled to the outer periphery of the second actuator 44 to control the left and right rotation of the armrest Rotating means (C);

On the horizontal fixing piece 26, a locking slot 28 having a plurality of locking jaws 29 is formed on the inner circumference, and the locking slot 28 is driven up and down by the operation of the operation knob 8 to be locked. And forward and backward means (D) for selectively engaging the forward and backward movements of the armrest pedestal (90) through which the engaging opening (10) for releasing operation is configured, the user can selectively adjust the height. In addition, the armrest stand can be rotated or retracted at regular intervals, and the armrest stand can be moved forward and backward so that the user can selectively adjust the size according to his / her body shape for easy operation and comfortable seating. It is to be provided.

Description

Chair armrest {a chair's armrest}

The present invention relates to a chair armrest, and more particularly, to a chair armrest for the user can selectively adjust the height and the opening angle and the front and rear length of the armrest to take the most comfortable seating position.

In general, chairs for public use are usually composed of a back support, a lower support leg installed with a seat plate and a caster, and armrests are installed on both sides of the seat plate in order to take a more comfortable seating.

However, as described above, the armrests installed on the left and right sides of the conventional chair are fixedly spaced apart by a predetermined distance based on a standard body type. There was an uncomfortable disadvantage.

And there is a problem in that the armrest support is always fixed in a fixed position because the user can not move the armrest support back and forth to fit his or her body shape.

The present invention is devised to solve the problems of the prior art, the user can adjust the height of the chair armrests selectively, and also the armrest support can be rotated at regular intervals, as well as to move the front and rear The purpose of the present invention is to provide a chair armrest that can be conveniently adjusted according to a person's own body shape and can obtain comfortable seating comfort.

1 is an exploded perspective view showing the overall structure of the armrest for a chair according to the present invention

2 is a combined perspective view showing an embodiment of a chair armrest according to the present invention

Figure 3 is an exploded perspective view of the lifting means in the chair armrest according to the present invention

Figure 4 is an exploded front view of the lifting means in the chair armrest according to the present invention

5a and 5b, 5c is a cross-sectional view showing the operating state of the lifting means in the armrest for chair according to the present invention

Figure 6 is an exploded perspective view of the rotation means in the armrest for chair according to the present invention

7 is a combined perspective view of the rotation means in the armrest for chair according to the present invention

Figure 8 is a cross-sectional view showing the operating state of the rotation means in the armrest for chair according to the present invention

Figure 9 is an exploded perspective view of the forward and backward means of the armrest in the armrest for chair according to the present invention

10a and 10b is a longitudinal cross-sectional view showing the forward and backward operating state of the armrest in the armrest for chair according to the present invention

11a and 11b is a cross-sectional view showing the forward and backward operating state of the armrest in the armrest for chair according to the present invention

Explanation of symbols on the main parts of the drawings

2: vertical support 4: actuator

6: accommodation body 8: operation knob

10: hanger 12: tungsten groove

14 body 16 coil spring

22: tanjibong 24: jamming projection

26: fixed piece 28: hook hole

29: engaging jaw 42: the first operating body

44: second actuator 50: external cylinder

52: screw 90: armrest support

92: lower case 94: upper case

140: fitting hole 421: guide home

422: inclined protrusion 423: inclined surface

424: guide projection 425: locking portion

426; Return Home 427: Sill

442: receiving groove 446: coupling hole

447: round chin 942: protrusion

In order to achieve the above object, the present invention has a vertical member is installed on one side of the lower armrest support and in the lower end of the conventional armrest for chairs consisting of a bracket connected to the seat plate,

The first and second are installed on the side of the vertical support slides vertically having a support rod having a locking projection, a plurality of inclined projections, guide projections and guide grooves, return grooves are formed on the inner side of the vertical support sandwiched between the vertical support Lifting means which is composed of the actuator to control the height of the armrest;

A ball stopper is installed on the outer circumference of the second actuator, and an actuating pin is provided on an upper portion thereof, while a plurality of through holes into which the ball stopper is inserted is formed, and a long hole into which the actuating pin is inserted is formed. Rotating means consisting of a receiving tube coupled to the outer periphery of the actuator to control the left and right pivoting operation of the armrest;

On the horizontal fixing piece, a locking hole having a plurality of locking jaws is formed on the inner circumference, and the locking hole is coupled up and down by the operation of the operation knob to engage and engage the locking and releasing operation. It comprises a; forward and backward means for selectively controlling the jeans.

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

1 is an exploded perspective view showing the overall structure of the armrest for a chair according to the present invention, Figure 2 is a combined perspective view showing an embodiment of the armrest for a chair according to the present invention, Figure 3 is an armrest for a chair according to the present invention 4 is an exploded front view of the elevating means in the chair armrest according to the present invention, FIGS. 5A and 5B and 5C are the elevation means of the elevating means in the armrest for the chair according to the present invention. 6 is an exploded perspective view of a pivot means in a chair armrest according to the present invention, FIG. 7 is a combined perspective view of a pivot means in a chair armrest according to the present invention, and FIG. Cross-sectional view showing the operating state of the rotation means in the armrest for chair, Figure 9 is an exploded perspective view of the forward and backward means of the armrest in the armrest for chair according to the present invention, Figures 10a and 10b Longitudinal cross-sectional view showing the forward and backward operating state of the armrest in the armrest for chair according to the present invention, Figure 11a and 11b shows a cross-sectional view showing the forward and backward operating state of the armrest in the armrest for chair according to the present invention.

As shown in Figure 1 to 10b, the armrest (A) for the chair of the present invention largely comprises a lifting means (B), a rotating means (C) and the forward and backward means (D).

As shown in FIGS. 3 and 4, the elevating means (B) includes a vertical support (2) having a tangy rod (22) having a locking protrusion (24) at one end of which is bent; A round bar 427 is formed at an upper end thereof, and a plurality of triangular guide protrusions 424 are arranged in a longitudinal direction on an inner side thereof, and an inclined protrusion 422 having a recessed portion 425 is formed on the upper side thereof. 424 is spaced apart from each other at a predetermined interval so that a zigzag guide groove 421 is formed between the guide protrusion 424 and the inclined protrusion 422, and communicates the upper and lower ends of the guide groove 421. A semi-cylindrical first actuator 42 having a return groove 426 formed at one rear side of the inclined protrusion 422; The second actuator formed of a semi-cylindrical body having the same size as the first actuator 42 but having a round jaw 447 formed at an upper end thereof, and having an accommodating groove 442 and a coupling hole 446 formed on the outer circumference thereof. 44); The first actuator 42 and the second actuator 44 are fitted to each other with the vertical support 2 interposed therebetween, and then inserted into the receiving tube 6. The upper end of the housing tube 6 was caught and fixed.

As shown in FIG. 6, the rotation means C includes a spring 445 and a ball stopper 449 sequentially inserted into the receiving groove 442 formed at the outer circumference of the second actuator 44. While inserting the operation pin 443 of a predetermined length into the coupling hole 446 formed in the upper portion, three through holes 62 corresponding to the ball stopper 449 are formed horizontally at equal intervals on the outer circumference thereof. An upper portion of the receiving tube body 6 having the long hole 64 corresponding to the operating pin 443 is fitted to the outer circumference of the actuator 4, and the ball stopper 449 has three through holes 62. By selectively binding to, rotation was possible.

As shown in FIG. 9, the front and rearward advancing means D has a horizontal fixing piece 26 having a corrugated engaging hole 28 having a plurality of engaging jaws 29 at equal intervals at an inner circumference. While seated in the guide groove 922 of (92), the upper groove is formed with a tungsten groove 12 in which the coil spring 16 is coalesced, and the body 14 having a fitting hole 140 in the lower portion is integral The locking hole 10 formed as is inserted into the locking hole 28, the lower portion is composed of the operation knob (8) is fitted into the fitting hole 140 is coupled to the screw.

In addition, a protrusion 942 in which the coil spring 16 is installed is formed inside the upper case 94, and a guide groove 922 in which the fixing piece 26 is inserted is formed inside the lower case 92.

Therefore, the locking knob 10 is moved up and down by the vertical operation of the operation knob 8 to engage and engage the locking slot 28 to enable the front and rear movement of the armrest support 90.

Hereinafter, reference numeral 51 denotes a fixing pin, 54 denotes a bolt, 70 denotes an inner cylinder, and 80 denotes a bracket.

Looking at the operation of the present invention configured as described above are as follows.

First, the operation of the elevating means (B) will be described with reference to FIGS. 5A, 5B, and 5C. When the user pulls upward while holding the armrest pedestal 90, the vertical support 2 rises with it. In this case, the locking protrusion 24 located at the first lower locking part 425 is slid upward along the guide groove 421 on the inclined surface 423 of the inclined protrusion 422, and the upper locking part of the first step is caught. The lifting operation is performed by being positioned at 425.

At this time, even if the armrest support 90 is pulled upward strongly, the locking projection 24 is raised while hitting the guide projection 424 of the upper portion and the sharp rise is controlled so that only one step to rise, the locking projection 24 is a tanji rod When passing over the inclined surface 423 by the elasticity of (22), it is returned to its original center again, so that it is always located at the locking portion 425.

Accordingly, if the armrest support 90 is continuously pulled upward, the armrest support 90 rises one step by the lifting operation, and when the armrest support 90 is crossed over the top inclined protrusion 422, the armrest support 90 is automatically positioned at the top of the return groove 426. In this state, the armrest support 90 When pressing the vertical support (2) and at the same time the locking projection 24 is lowered by the return groove 426 is located at the bottom end is completed the lowering operation of the armrest (A).

On the other hand, when the operation of the rotation means (C) will be described with reference to FIGS. 7 and 8, when the user rotates to the left or right while holding the armrest support 90, the actuator (4) is the receiving tube (6). Rotated within, the ball stopper 449 is selectively coupled to the left or right through-hole 62 to rotate the armrest (A) to the left or right.

That is, when the ball stopper 449 is coupled to the central through hole 62, the armrest support 90 is parallel to the seat plate, but when the armrest A is rotated left or right, the ball stopper 449 is left. Or it is coupled to the through hole 62 on the right side to change the angle of the armrest (A).

At this time, even if the armrest support 90 is excessively rotated, the actuating pin 443 is installed to flow only inside the long hole 64, thereby limiting the rotation interval, so that the ball stopper 449 is not separated from the through hole 62. It was not.

Referring to the operation of the forward and backward means (D) with reference to Figures 10a and 10b and 11a and 11b, when the user presses the operation knob (8) installed in the lower portion of the armrest support (90) is linked to this coil spring As the 16 is contracted, the catch 10 is raised, and the body 14 is separated from the catch 28.

In this state, the body 14 of the locking hole 10 is separated from the locking hole 28 so that the armrest support 90 can be moved back and forth within the locking hole 28 so that the user can move forward or backward as long as desired. When the operation knob 8 is released again, the latch 10 is lowered due to the elastic force of the coil spring 16, and the body 14 is inserted into the latch hole 28 to fix the armrest support 90. .

That is, the latching hole 28 has a plurality of locking projections 29 are formed at equal intervals on both sides of the inner circumference so as not to move back and forth unless the locking hole 10 is separated from the locking hole 28.

As described above, the armrest for the chair according to the present invention can be selectively adjusted by the user, and the armrest stand can be rotated at regular intervals to open or retract, as well as to move the armrest stand back and forth. The user can selectively adjust the size to suit their own body shape, which is easy to operate and provides a comfortable seating comfort.

Claims (4)

In the general armrest for chair consisting of a bracket that is installed on the lower side of the armrest pedestal and the lower end is connected to the seat plate, Vertical support (2) is provided with a support rod 22 having a locking projection 24 on one side lower portion, a plurality of inclined projections 422 and guide projections 424 having a locking portion 425 and the inclined surface 423. The first actuator 42 having a semi-cylindrical shape having a guide groove 421 and a return groove 426 formed on an inner side thereof, and the second actuator 44 having the same shape intersect the vertical support 2. Elevating means (B) coupled to and opposed to each other; A ball stopper 449 supported by a spring 445 is installed on one side of the outer circumference thereof, and a second actuator 44 provided with an actuating pin 443 protruded a predetermined length thereon, and the ball stopper 449. Is composed of a plurality of through-holes 62 into which the plurality of through holes 62 are inserted, and the housing tube 6 in which the long holes 64 into which the operation pins 443 are inserted are formed, and the second actuator 44 includes the housing tube 6. Rotating means (C) is fitted into the inside; A horizontal fixing piece 26 having a locking hole 28 having a plurality of locking jaws 29 at an inner circumference thereof, and a locking hole 10 having a coil spring 16 installed thereon at the upper portion of the locking hole 28. It is coupled to the operation knob 8 by penetrating through the locking hole 28, and the locking device 28 and the body 14 are engaged and separated by being moved upward and downward by the vertical operation of the operation knob 8. And arm forward and backward means (D) consisting of a fastener (10) to selectively adjust the forward and backward movement of the armrest support (90). The method of claim 1, wherein the elevating means (B) is a vertical support (2) is attached to one side of the tangy rod 22 having a locking projection 24 is bent at one end; A circular projection 427 is formed at an upper end thereof, and a plurality of guide protrusions 424 are arranged in a longitudinal direction on an inner side thereof, and the guide protrusions 424 of the inclined protrusion 422 having a recessed portion 425 recessed on an upper surface thereof. By staggering and spaced apart with a predetermined interval so that the guide groove 421 of the zigzag shape is formed between the guide protrusion 424 and the inclined protrusion 422, the upper and lower ends of the guide groove 421 communicating A semi-cylindrical first actuator 42 having a groove 426 formed at one rear side of the inclined protrusion 422; The second actuator formed of a semi-cylindrical body having the same size as the first actuator 42 but having a round jaw 447 formed at an upper end thereof, and having an accommodating groove 442 and a coupling hole 446 formed on the outer circumference thereof. 44); As the vertical support 2 rises, the locking protrusion 24 rises by one step while being seated and fixed to the locking portion 425 of the inclined protrusion 422 to allow height adjustment, and the locking protrusion 24 The armrest for a chair characterized in that when the () passes through the inclined protrusion 422 of the uppermost portion to be restored to the lowermost portion by the return groove (426). According to claim 1, The rotation means (C) is a spring 445 and the ball stopper 449 is sequentially inserted into the receiving groove 442 formed on the outer periphery of the second actuator 44, the upper portion formed Inserting the operation pin 443 of a predetermined length into the coupling hole 446, the three through holes 62 corresponding to the ball stopper 449 is formed horizontally at equal intervals on the outer periphery, the upper A receiving tube 6 having a long hole 64 corresponding to the actuating pin 443 is fitted to the outer periphery of the actuating body 44, and the ball stopper 449 is selectively provided to the three through holes 62. Armrests for chairs characterized in that the rotation is made to the left and right by being combined. According to claim 1, wherein the forward and backward means (D) is a horizontal fixing piece 26 is formed with a fastening hole 28 of the waveform having a plurality of locking jaw 29 at equal intervals on the inner circumference, and the coil on the upper The stoppage groove 12 is provided with a spring 16 is formed, the lower end of the engaging body 10 is formed integrally with the body 14 having the fitting hole 140 in the inner side is fitted into the engaging hole 28 Consists of the operation knob (8) to be fitted to the fitting hole 140 and coupled to the screw 52 to the lower, and the locking hole 10 is moved up and down by the vertical operation of the operation knob (8) (28) and the armrest for chairs, characterized in that to be able to selectively adjust the front and rear movement interval of the armrest support (90).