TWM516907U - Armrest adjustment device attachable to seat - Google Patents

Description

Handrail adjustment device attachable to the seat

The present invention relates to an armrest adjustment device that can be attached to a seat, and more particularly to an armrest adjustment device that can be attached to a column in a seat.

Among the various types of seats, there is a type of office chair or swivel chair, which is characterized in that a seat pillar has a center pillar connected to the seat of the seat, and the seat surface can be rotated by the center pillar as a rotating shaft. In addition, a pneumatic device is provided in the center column to facilitate height adjustment of the seat surface.

Usually, such an office chair or a swivel chair is provided with an armrest, and the armrest can also be adjusted relative to the seat surface. However, how to install the armrest on the seat is a problem. Nowadays, the usual method is to install a piece of iron in the column of the seat, and the armrest is placed on the iron piece. Due to the new design seats of today's different designs, the seats of different manufacturers often use different iron pieces to combine with the middle column. If these different iron parts are designed one by one, it is not only time-consuming but also labor-intensive. However, without using the armrest binding device corresponding to the iron member, it is possible to cause the armrest to be loose, especially when the user leans against the armrest.

Another common problem with armrest binding devices is that the degree of freedom of adjustment is not high. Most armrest combinations only adjust the relative height of the armrest to the seat surface, but for workers who need to maintain a particular posture on the seat, it is also an urgent need for the armrest to help the worker maintain a particular position. For example, when a doctor performs a local diagnosis or a small-scale operation on a patient (for example, a dentist performs a tooth cleaning and a microscope-assisted operation on a patient), it is usually only necessary to move the device through the wrist slightly. It can be completed. Without proper support for the arm, not only the physician is easily fatigued, but also the stability of the diagnosis or surgery is greatly reduced.

In view of this, providing a better improvement solution is an urgent problem to be solved in the industry.

The main purpose of the present invention is to provide an armrest adjustment device attachable to a seat that can be mounted in a column of a seat and that can adjust and fix the armrest in a plurality of degrees of freedom.

In order to achieve the above object, the armrest adjusting device attached to the seat provided by the present invention includes an engaging mechanism, a horizontal arm and an adjusting mechanism. The engaging mechanism forms a fixing hole for the sleeve to be sleeved on the center pillar. The horizontal arm has an engagement end and an adjustment end, and the engagement end is opposite the adjustment end, and the engagement end is engaged with the engagement mechanism. One end of the adjusting mechanism is disposed on the adjusting end of the horizontal arm, and the armrest is disposed at the other end of the adjusting mechanism.

Therefore, the present invention directly mounts the entire set of handrails to the seat center pillar through the fixing holes of the joint mechanism without requiring additional iron fittings. In addition, the creation can adjust the position and angle of the armrest through an adjustment mechanism with multiple degrees of freedom and fix it to provide more comfortable support for the user.

1‧‧‧Handrail adjustment device attached to the seat

100‧‧‧Joining mechanism

101‧‧‧ gap

102‧‧‧Fixed holes

110‧‧‧ joints

110a‧‧‧Blind hole

111‧‧‧ joint block

112‧‧‧Lock screws

120‧‧‧Bumps

120a‧‧‧through hole

130‧‧‧Joint screws

200‧‧‧ horizontal arm

210‧‧‧ joint end

210a‧‧‧Lock hole

220‧‧‧ adjustment end

300‧‧‧Adjustment agency

301‧‧‧First member

302‧‧‧Second bars

310‧‧‧First Adjustment Department

311‧‧‧First tube

311a‧‧‧First perforation

312‧‧‧First cylinder

313‧‧‧ upward crown

314‧‧‧ downward crown

314a‧‧‧Second perforation

315‧‧‧First fixed unit

316‧‧‧Second fixed unit

320‧‧‧Second Adjustment Department

321‧‧‧Second body

3211‧‧‧ convex rail

322‧‧‧Second cylinder

3221‧‧‧ Groove

3222‧‧‧stops

323‧‧‧ third fixed unit

330‧‧‧ Third Adjustment Department

331‧‧‧ universal joint

3311‧‧‧ Shell

3312‧‧‧spherical

3313‧‧‧ fixing screws

332‧‧‧Four fixed unit

340‧‧‧Fourth Adjustment Department

341‧‧‧ fixed plate

342‧‧‧ bearing seat

3421‧‧‧rails

343‧‧‧Fixed fixed unit

2‧‧‧ seats

21‧‧‧ center column

22‧‧‧Handrail

Θ‧‧‧ angle

A~F‧‧‧ degrees of freedom

FIG. 1 is a perspective view of the armrest adjusting device attached to the seat of the present invention.

FIG. 2 is a schematic view showing the use of the armrest adjusting device attached to the seat of the present invention.

FIG. 3 is a schematic view of the engagement mechanism of the armrest adjusting device attached to the seat of the present invention after being engaged with the center pillar of the seat.

4 is a schematic view of the engagement mechanism of the armrest adjustment device attached to the seat of the present invention engaged with the center post of the other seat.

Fig. 5 is an exploded perspective view showing the engagement mechanism of the armrest adjusting device attached to the seat of the present invention.

Fig. 6 is an exploded perspective view showing the first adjusting portion of the adjusting mechanism of the armrest adjusting device attached to the seat of the present invention.

Fig. 7 is an exploded perspective view showing the second adjusting portion of the adjusting mechanism of the armrest adjusting device attached to the seat of the present invention.

Fig. 8 is an exploded perspective view showing the third adjusting portion of the adjusting mechanism of the armrest adjusting device attached to the seat of the present invention.

Fig. 9 is a cross-sectional view showing a third adjusting portion of the adjusting mechanism of the handrail adjusting device of the present invention.

Figure 10 is a side elevational view of the adjustment mechanism of the armrest adjustment device attached to the seat of the present invention.

Figure 11 is a plan view showing the movement of the adjustment mechanism of the armrest adjusting device attached to the seat of the present invention.

First, please refer to FIG. 1 and FIG. 2 , which are respectively a schematic perspective view and a schematic diagram of the use of the armrest adjusting device attached to the seat.

The handrail adjusting device 1 (hereinafter referred to as the adjusting device 1) that can be attached to the seat of the present invention can be mounted on a center pillar 21 of a seat 2 and used to carry the two armrests 22. The adjustment device 1 includes an engagement mechanism 100, two horizontal arms 200, and two adjustment mechanisms 300. The engaging mechanism 100 is configured to engage the adjusting device 1 to the center pillar 21, and one end of each adjusting mechanism 300 is disposed on one of the horizontal arms 200, and each armrest 22 is disposed at the other end of one of the adjusting mechanisms 300.

Please refer to FIG. 3 and FIG. 4 , respectively, which are schematic diagrams of the engagement mechanism of the created armrest adjustment device of the seat and the seat center post and the other seat center post. In order to facilitate understanding, FIGS. 3 and 4 are plan views, and the portion above the joint of the center pillar 21 is omitted, so that the relationship between the joint mechanism 100 and the center pillar 21 is clearly shown. The joint mechanism 100 includes a joint portion 110, a protrusion 120 and at least one joint screw 130. A gap 101 is formed between the bump 120 and the joint portion 110. The bump 120 and the joint portion 110 together form a fixing hole 102. The fixing hole 102 is sleeved on the center pillar 21.

Since the root of the bump 120 is connected to the joint portion 110, and the gap 101 is in communication with the fixing hole 102, when the gap size of the gap 101 is changed, the size of the diameter of the fixing hole 102 is changed. If the diameter of the center pillar 21 is equal to the diameter of the fixing hole 102, as shown in Fig. 3, the mounting of the fixing hole 102 can be performed without changing the diameter of the fixing hole 102. Further, as shown in Fig. 4, if the diameter of the center pillar 21 is smaller than the diameter of the fixing hole 102, the pitch of the gap 101 must be reduced to reduce the diameter of the fixing hole 102 accordingly. On the other hand, if the diameter of the center pillar 21 is larger than the diameter of the fixing hole 102, the diameter of the fixing hole 102 can be enlarged as long as the pitch of the gap 101 is increased.

Next, please refer to FIG. 5 together, which is an exploded perspective view of the engaging mechanism of the armrest adjusting device attached to the seat. In order to facilitate changing the spacing of the gap 101, the bonding mechanism 100 further includes at least one blind hole 110a, at least one through hole 120a, and a joint screw 130. The through hole 120a is disposed in the bump 120 and perpendicular to the gap 101. The blind hole 110a is disposed at the joint portion 110 and facing the through hole 120a, and the blind hole 110a has an internal thread (not shown). The engaging screw 130 is disposed in the through hole 120a and the blind hole 110a. In other words, the engaging screw 130 is locked in the blind hole 110a through the through hole 120a and the gap 101. When the engaging screw 130 is locked tighter, the bump 120 is pulled closer to the engaging portion 110, thereby reducing The size of the gap of the small gap 101. In the present embodiment, the number of the blind holes 110a and the engaging screws 130 is equal to the number of the through holes 120a, which are each two, but are not limited thereto.

Next, please refer to FIGS. 1 and 5 to explain the specific structure of the horizontal arm 200. The horizontal arms 200 each have an engaging end 210 and an adjusting end 220, and the engaging end 210 is opposite to the adjusting end 220. The engagement end 210 is engaged with the engagement mechanism 100 and the adjustment end 220 is engaged with the adjustment mechanism 300. The joint portion 110 has two engaging blocks 111 each having a locking screw 112. The engaging end 210 is sleeved on one of the engaging blocks 111, and the locking screw 112 fixes the horizontal arm 200 to the engaging block 111. The joint end 210 has a locking hole 210a, and the diameter of the locking hole 210a is smaller than the diameter of the head of the locking screw 112.

Specifically, the locking screw 112 is first locked into the locking hole 210a, the engaging end 210 is sleeved on the engaging block 111, and finally the locking screw 112 is screwed out and the head of the locking screw 112 is abutted against the level. The periphery of the locking hole 210a of the arm 200. Therefore, the engaging end 210 does not come loose from the engaging block 111 by the frictional force generated by the head of the locking screw 112 against the horizontal arm 200.

In addition, in order to make the position of the armrest 22 more ergonomic, the two horizontal arms 200 are not parallel to each other. In the present embodiment, the angle θ between the two horizontal arms 200 may be equal to 120 degrees, but not limited thereto. With this configuration, when the adjusting device 1 is attached to the seat 2, the horizontal arm 200 extends toward the rear of the seat 2 (as shown in FIG. 2), so that the user's foot has a larger movable space without being adjusted. The device 1 is obstructed.

Next, please refer to FIG. 1 and FIG. 6 together. FIG. 6 is an exploded perspective view showing the first adjusting portion of the adjusting mechanism of the armrest adjusting device attached to the seat. Each adjustment mechanism 300 includes a first rod 301 and a second rod 302. The first rod member 301 is disposed at one of the adjustment ends 220; the second rod member 302 is disposed at an upper end of the first rod member 301, and one end of the second rod member 302 is configured to provide one of the armrests 22. The first rod 301 and the second rod 302 may not be parallel, but in the embodiment, the first rod 301 and the second rod 302 are perpendicular to each other, but not limited thereto.

The first rod 301 can be a first adjusting portion 310. The first adjusting portion 310 has a first tube 311, a first cylinder 312, an upward crown 313, a downward crown 314, and a first A fixing unit 315 and a second fixing unit 316.

The first tube body 311 is disposed on the adjustment end 220 of one of the horizontal arms 200. The first column body 312 is disposed in the first tube body 311 so as to be relatively rotatable and movable. Specifically, the first tube body 311 is a The first cylinder 312 is a cylinder, and the first cylinder 312 is rotated about the axis of the first tubular body 311 or moves along the axis.

The middle portion of the first pipe body 311 has a first through hole 311a, and the first fixing unit 315 is disposed in the middle portion of the first pipe body 311 and penetrates the first through hole 311a and abuts against the first column body 312, but the first fixing unit 315 selectively abuts the first cylinder 312. When the first fixing unit 315 does not abut against the first cylinder 312, the first cylinder 312 can rotate and move relative to the first tubular body 311; when the first fixing unit 315 abuts against the first cylinder 312, the first A fixing unit 315 is adapted to fix the relative position and angle of the first cylinder 312 and the first pipe body 311. In other words, when the first fixing unit 315 fixes the first cylinder 312, the first cylinder 312 cannot rotate or move relative to the first tube 311.

The upwardly facing crown 313 is disposed at an upper end of the first tubular body 311, and the downwardly facing crown 314 is disposed to the first cylindrical body 312 in a relatively rotatable and movable manner. Specifically, the downward crown 314 is rotated about the axis of the first cylinder 312 or moved along the axis. In addition, the downwardly facing crown 314 is just engageable with the upwardly facing crown 313.

The side of the downwardly facing crown 314 has a second through hole 314a, and the second fixing unit 316 is disposed on the downwardly facing crown 314 and penetrates the second through hole 314a and abuts against the first cylindrical body 312, but the second fixing unit 316 selects Strictly abut the first cylinder 312. When the second fixing unit 316 does not abut against the first cylinder 312, the downwardly facing crown 314 can rotate and move relative to the first cylinder 312; when the second fixing unit 316 abuts against the first cylinder 312, The second fixing unit 316 is adapted to fix the relative position and angle of the downward facing crown 314 and the first cylinder 312. In other words, when the second fixing unit 316 fixes the downwardly facing crown 314, the downwardly facing crown 314 cannot be rotated or moved relative to the first cylinder 312.

Next, please refer to FIG. 1 and FIG. 7 together. FIG. 7 is an exploded perspective view of the second adjusting portion of the adjusting mechanism of the armrest adjusting device attached to the seat. The second rod 302 can be a second adjusting portion 320 . The second adjusting portion 320 has a second tube 321 , a second column 322 , and a third fixing unit 323 . The second pipe body 321 is disposed at an upper end of the first rod member 301. The second cylinder 322 can be opposite The second tube body 321 is disposed to be rotated or moved. The third fixing unit 323 is disposed on the second tube body 321 , and the third fixing unit 323 is adapted to fix the relative position and angle of the second column 322 and the second tube body 321 . In this embodiment, the second tube body 321 is a circular tube, and the second column body 322 is a cylinder, and the second tube body 321 and the second column body 322 are movable in a manner similar to the first tube body 311 and the first The cylinder 312, and the third fixing unit 323 operates in a manner similar to the first fixing unit 315, and will not be described herein.

In another aspect of the embodiment, the inner side of the second tubular body 321 has a convex rail 3211, and the outer side of the second cylindrical body 322 has a recess 3221. The groove 3221 is matched with the convex rail 3211, that is, the second cylinder 322 is spanned to the convex rail 3211 through the groove 3221. Therefore, in this aspect, the second cylinder 322 can only move relative to the second tubular body 321 and cannot rotate relative to each other. Thereby, the second cylinder 322 can be prevented from rotating downward by itself due to the weight of the armrest 22 during operation.

In the present aspect, the end of the recess 3221 has a stopper 3222 which may be the both ends of the recess 3221 or the end of the recess 3221 away from the armrest 22. The stopper 3222 protrudes relative to the recess 3221, so that the range in which the second cylinder 322 moves relative to the second tubular body 321 can be restricted, and the chance that the second cylinder 322 is disengaged from the second tubular body 321 is reduced. In detail, the stopper 3222 may be an additional component in addition to the shape in which the recess 3221 itself is convex. In this aspect, a screw is locked to the end, but is not limited thereto. In addition, in this aspect, the second cylinder 322 is first placed into the second tubular body 321 during assembly, and the screw is locked to the end of the recess 3221.

In another possible aspect of the embodiment, it is similar to the previous aspect, but the difference is that there is no convex rail 3211 or groove 3221, and the second tubular body 321 is not a circular tube, and the second cylindrical body 322 is non-cylindrical. Therefore, the aspect can also avoid the purpose of avoiding the rotation of the second cylinder 322. Since this aspect can be easily considered by those skilled in the art, it will not be further illustrated in the drawings.

Then continue to explain the basic implementation of this creation. Please refer to FIG. 1 , FIG. 8 and FIG. 9 . FIG. 8 and FIG. 9 are respectively an exploded perspective view and a cross-sectional view of a third adjusting portion of the adjusting mechanism of the armrest adjusting device attached to the seat. .

The adjustment mechanism 300 further includes a third adjustment portion 330 and a fourth adjustment portion 340. The third adjusting portion 330 is disposed at one end of the second rod 302. In detail, the third adjusting portion 330 has a universal joint 331 , and the universal joint 331 is disposed at one end of the second rod 302 . One of the armrests 22 is disposed on the universal joint 331 through the fourth adjusting portion 340 so that the armrest 22 is adapted to rotate relative to the universal joint 331. In detail, the universal joint 331 has a casing 3311, a spherical portion 3312 received in the casing 3311 and a fixing screw 3313. One end of the fixing screw 3313 is locked to the spherical portion 3312, and the other end is fixed to the fourth adjustment. Part 340. Therefore, the armrest 22 is rotatable relative to the center of the spherical portion 3312.

The third adjusting portion 330 further selectively has a fourth fixing unit 332 disposed on the universal joint 331 , specifically disposed outside the outer casing 3311 , and the fourth fixing unit 332 is adapted to fix one of the handrails 22 relative to the 10,000 The angle to the joint 331. In detail, the fourth fixing unit 332 is abutted against the spherical portion 3312 and selectively does not abut against the spherical portion 3312. When the fourth fixing unit 332 does not abut against the spherical portion 3312, the spherical portion 3312 can rotate relative to the outer casing 3311; when the fourth fixing unit 332 abuts against the spherical portion 3312, the fourth fixing unit 332 is adapted to fix the ball The relative angle of the portion 3312 to the outer casing 3311. In other words, when the fourth fixing unit 332 fixes the spherical portion 3312, the spherical portion 3312 cannot be rotated relative to the outer casing 3311. Therefore, the fourth fixing unit 332 is adapted to fix the angle of the armrest 22 with respect to the universal joint 331.

The fourth adjusting portion 340 has a fixing plate 341 and a bearing seat 342. The fixing plate 341 is disposed at one end of the fixing screw 3313 that is not locked to the spherical portion 3312. The carrier 342 is configured to carry the armrest 22 and has a sliding rail 3421. The fixing plate 341 is disposed in the carrier 342 and can move along the sliding rail 3421. The fourth adjusting portion 340 further has a fifth fixing unit 343. The fifth fixing unit 343 is disposed at the end of the fixing screw 3313 that is not fixed to the spherical portion 3312, and is located at the fixing plate 341 and the spherical portion 3312. between. In this embodiment, the fifth fixing unit 343 can be a knob, and the distance between the fifth fixing unit 343 and the fixing plate 341 can be changed when the fifth fixing unit 343 rotates, so that the bearing seat can be selectively clamped or loosened. 342. When the fifth fixing unit 343 and the fixing plate 341 clamp the bearing seat 342, the bearing seat 342 cannot be Move relative to the fixed plate 341. On the other hand, if the fifth fixing unit 343 and the fixing plate 341 loosen the carrier 342, the carrier 342 can move relative to the fixing plate 341. Therefore, the fifth fixing unit 343 is adapted to fix the relative position of the carrier 342 and the fixing plate 341.

Next, explain the freedom of this creation. Please refer to FIG. 10 and FIG. 11 , which are respectively an active side view and a movable top view of the adjustment mechanism of the created armrest adjusting device of the seat. In this embodiment, the first adjusting portion 310 is perpendicular to the ground. Therefore, the height of the armrest 22 (not shown) can be adjusted through the first adjusting portion 310 (see the degree of freedom A in FIG. 10). During the adjustment, the first fixing unit 315 and the second fixing unit 316 are first loosened (ie, not abutted against the first cylinder 312), and the relative position of the downward crown 314 and the first cylinder 312 can be adjusted. When the relative position of the downward crown 314 and the first cylinder 312 is determined, the downward crown 314 is engaged with the upward crown 313, and the relative position of the first cylinder 312 and the first tubular body 311 can be determined. In other words, the height of the armrest 22 is also determined. In addition, the relative positions of the downward crown 314 and the first cylinder 312 and the first cylinder 312 and the first tubular body 311 may be simultaneously determined. Finally, the first fixing unit 315 and the second fixing unit 316 are further abutted against the first cylinder 312 to complete the adjustment.

Since the first tube body 311 of the first adjusting portion 310 and the first column body 312 are relatively rotatable, the armrest 22 can also be driven to rotate substantially with the axis of the first tube body 311 as a rotating shaft (see FIG. 10). And the degree of freedom B of Figure 11). In addition, the first tubular body 311 and the first cylindrical body 312 are relatively rotated in a scaled manner through the upwardly facing crown 313 and the downwardly facing crown 314. Therefore, in addition to ensuring that the same angle can be rotated every time, please help others to rotate without compromising the difference. For example, just saying "turning three scales clockwise" will not cause misunderstanding.

In this embodiment, the second adjusting portion 320 is parallel to the ground, so that the distance between the armrest 22 and the seat surface can be adjusted through the second adjusting portion 320 (see the degree of freedom C in FIG. 10). In the aspect where the convex rail 3211 and the recess 3221 are not provided, or the second tubular body 321 is a circular tube and the second cylindrical body 322 is a cylindrical shape, the lateral inclination of the armrest 22 can also be adjusted (see The degree of freedom D in Figure 11). During the adjustment, the third fixing unit 323 is first loosened (ie, not abutted against the second cylinder 322) to be adjusted. Determine the armrest 22 The adjustment is completed by abutting the third fixing unit 323 against the second cylinder 322 after the distance from the seat surface or the inclination of the armrest.

In this embodiment, the angle of the armrest 22 relative to the universal joint 331 can also be adjusted through the third adjusting portion 330 (see the degree of freedom E of FIG. 10). During the adjustment, the fourth fixing unit 332 is first loosened (ie, not abutted against the spherical portion 3312, not shown) to be adjusted. After the angle of the armrest 22 is determined, the fourth fixing unit 332 is abutted against the spherical portion 3312 to complete the adjustment.

In this embodiment, the distance between the armrest 22 and the seat surface can also be adjusted through the fourth adjusting portion 340 (see the degree of freedom F in FIG. 10). When adjusting, the fifth fixing unit 343 is first loosened (ie, the non-clamping carrier 342) to be adjusted. After the distance between the armrest 22 and the seat surface is determined, the fifth fixing unit 343 and the fixing plate 341 (not shown) are clamped to the carrier 342 to complete the adjustment.

In summary, the armrest adjustment device attached to the seat of the present invention directly installs the entire armrest 22 into the seat center pillar 21 through the fixing hole 102 of the joint mechanism 100, without requiring additional iron fittings, which not only does not occupy space. , also greatly reduced the assembly steps. In addition, the armrest adjusting device attached to the seat of the present invention can adjust the height, the horizontal position and the angle of the armrest 22 by the adjusting mechanism 300, and can adjust the position and angle of the armrest 22 to be fixed and fixed to provide more comfortable for the user. Support.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been disclosed above in the preferred embodiment, it is not intended to limit the present invention, and is not in any technical field. A person skilled in the art can make some modifications or modifications to equivalent embodiments by using the above-disclosed technical contents without departing from the technical scope of the present invention. The technical essence of the present invention, any simple modifications, equivalent changes and modifications made to the above embodiments are still within the scope of the present technical solution.

1‧‧‧Handrail adjustment device attached to the seat

100‧‧‧Joining mechanism

102‧‧‧Fixed holes

200‧‧‧ horizontal arm

210‧‧‧ joint end

220‧‧‧ adjustment end

300‧‧‧Adjustment agency

301‧‧‧First member

302‧‧‧Second bars

310‧‧‧First Adjustment Department

311‧‧‧First tube

312‧‧‧First cylinder

315‧‧‧First fixed unit

316‧‧‧Second fixed unit

320‧‧‧Second Adjustment Department

321‧‧‧Second body

322‧‧‧Second cylinder

323‧‧‧ third fixed unit

330‧‧‧ Third Adjustment Department

331‧‧‧ universal joint

332‧‧‧Four fixed unit

340‧‧‧Fourth Adjustment Department

342‧‧‧ bearing seat

Θ‧‧‧ angle

Claims (10)

An armrest adjusting device attachable to a seat is mounted on a center pillar of a seat and is used for carrying two armrests. The armrest adjusting device attachable to the seat comprises: an engaging mechanism, the engaging mechanism forms a fixing hole, The fixing hole is sleeved on the center pillar; the two horizontal arms each have an engaging end and an adjusting end, and the engaging end is opposite to the adjusting end, and the engaging end is engaged with the engaging mechanism; And an adjusting mechanism, wherein one end of each of the adjusting mechanisms is disposed at the adjusting end of one of the horizontal arms, and the other end of each of the adjusting mechanisms is configured to set one of the armrests. The armrest adjusting device of the seat according to claim 1, wherein each of the adjusting mechanisms comprises: a first lever disposed at one of the adjusting ends; and a second lever disposed at the first An upper end of the rod, one end of the second rod is used to set one of the armrests. The armrest adjusting device of the seat can be attached to the seat, wherein each of the first levers is a first adjusting portion, and the first adjusting portion has: a first tubular body disposed on one of the horizontal arms The first cylinder is disposed in the first tube body in a relatively rotatable and movable manner; an upwardly facing crown is disposed at an upper end of the first tube body; and a downwardly facing crown is rotatable relative to the first tube And movably disposed on the first cylinder, the downwardly facing crown is just engageable with the upwardly facing crown; a first fixing unit is disposed on the first tubular body, and the first fixing unit is adapted to fix the first a relative position and an angle of the first tube and the first tube; and a second fixing unit disposed on the downward crown, the second fixing unit is adapted to fix the downward crown and the first cylinder Relative position and angle. The second arm member is a second adjusting portion, and the second adjusting portion has a second tube disposed on the first rod. a second cylinder that is relatively movably disposed in the second tube; and a third fixing unit disposed on the second tube, the third fixing unit is adapted to fix the second cylinder The relative position to the second tube. The armrest adjusting device of the seat can be attached to the seat, wherein the inner side of the second tube has a convex rail, and the outer surface of the second cylinder has a groove, the groove and the convex The rails are mated and the end of the recess has a stop. The armrest adjusting device of the seat can be attached to the seat, wherein each of the adjusting mechanisms further includes a third adjusting portion, the third adjusting portion is disposed at one end of the second member and has 10,000 To the joint, one of the handrails is rotatably disposed on the universal joint. The armrest adjusting device of the seat can be attached to the seat, wherein the third adjusting portion further has a fourth fixing unit. The fourth fixing unit is disposed on the universal joint and is adapted to fix one of the handrails. Angle relative to the universal joint. The armrest adjusting device attachable to the seat according to claim 2, wherein the first bar member is not parallel to the second bar member. The handrail adjusting device attachable to the seat according to any one of claims 1 to 8, wherein the engaging mechanism comprises: a joint portion; a protrusion having a gap with the joint portion, and The joint portion is formed to form the fixing hole; at least one through hole is disposed on the protrusion and perpendicular to the gap; at least one blind hole is disposed at the joint portion and facing the at least one through hole, and the number of the at least one blind hole And the at least one blind hole has an internal thread; and the at least one bonding screw is disposed in the at least one through hole and the at least one blind hole, and is screwed with the at least one blind hole, the at least The number of one engagement screws is equal to the number of the at least one through holes. The armrest adjusting device of the seat according to claim 9, wherein the engaging portion has two engaging blocks, each of the engaging blocks has a locking screw, and the engaging ends have a locking hole and the same The engaging end is respectively sleeved on one of the engaging blocks, and the locking hole has a diameter smaller than a diameter of a head of the locking screw, and the fixing screw is located in the engaging end and abuts against a circumference of the locking hole.