JP4528671B2 - Tractor armrest - Google Patents

Description

  The present invention relates to an armrest of a tractor.

Conventionally, an armrest is provided on the side portion of the seat seat of the tractor, and the armrest is disposed on the side of the backrest portion of the seat seat so as to be rotatable in the vertical direction with the rear side as a fulcrum (for example, (See Patent Document 1). Further, a tractor having an assist bar provided on an upper part of a fender so that an operator can grasp it when getting on and off the tractor is also known (see, for example, Patent Document 2).
JP 2002-104253 A Japanese Utility Model Publication 7-42934

  However, if both the armrest and the assist bar are arranged on the seat seat of the agricultural machine, the space near the seat seat becomes complicated by the armrest and the assist bar, which is an obstacle to downsizing the tractor. It was. Further, when an operation lever or the like is disposed below the armrest or the assist bar, the armrest or the assist bar becomes in the way and it is difficult to operate.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In Claim 1, the armrest base (40) is disposed on the fender (26) in the vicinity of the seat (7), and the armrest (100) of the tractor (1) is provided on the armrest base (40). The armrest base (40) is provided with a pivot shaft (43) in the front-rear horizontal direction, and an arm base (32) is pivotally supported on the pivot shaft (43). From the upper side to the front, an armrest arm (30) is projected, and an elbow rest member (31) is externally fitted and fixed to the distal end side of the armrest arm (30), with the pivot shaft (43) as a center, The arm base (32), the armrest arm (30), and the elbow rest member (31) can be moved in parallel by rotating left and right, and the armrest arm (30) and the elbow rest member are positioned close to the seat (7). (31) is fixed, and the armrest arm (30) or the elbow when the operator is operating the tractor (1) The armrest position for placing the elbow on the foot member (31), and the armrest arm (30) and the elbow rest member (31) are fixed at a position far from the seat (7), and the operator attaches to the tractor (1). When getting on and off, it can be held at the assist bar position where the armrest arm (30) or the elbow rest member (31) is gripped .

According to a second aspect of the present invention, in the armrest of the tractor according to the first aspect, there is elasticity between the tip side of the arm base (32) and a locking member (37) provided on the bottom surface of the armrest base (40). It connects with a member (38), this locking member (37) is located below the pivot (43) which pivotally supports this arm base (32), and this armrest arm (30) and elbow rest member When (31) rotates between the armrest position and the assist bar position, the fulcrum is exceeded, and the armrest arm (30) and the elbow rest member (31) are elastic at the armrest position and the assist bar position. It is configured so as to be able to be retained .

According to a third aspect of the present invention, in the armrest of the tractor according to the first aspect, the arm base (32) includes an arm portion (32a) and a cylindrical portion (32b), and forwards from the arm portion (32a). An armrest (30) is protruded, and the cylindrical portion (32b) is pivotally fitted to the pivot shaft (43), and a fitting portion between the cylindrical portion (32b) and the pivot shaft (43). A plurality of lock grooves (43a, 43b) are provided corresponding to the armrest position and the assist bar position, and the lock protrusions (33b) fitted into the lock grooves (43a, 43b) are provided with the armrest arms (30 ) And the operation member (34) are operated, and the lock projection (33b) is fitted into the lock grooves (43a, 43b), and the armrest position or the assist bar is operated. Lock mechanism is configured to lock in position Those were.

  As effects of the present invention, the following effects can be obtained.

In Claim 1, the armrest base (40) is disposed on the fender (26) in the vicinity of the seat (7), and the armrest (100) of the tractor (1) is provided on the armrest base (40). The armrest base (40) is provided with a pivot shaft (43) in the front-rear horizontal direction, and an arm base (32) is pivotally supported on the pivot shaft (43). From the upper side to the front, an armrest arm (30) is projected, and an elbow rest member (31) is externally fitted and fixed to the distal end side of the armrest arm (30), with the pivot shaft (43) as a center, The arm base (32), the armrest arm (30), and the elbow rest member (31) can be moved in parallel by rotating left and right, and the armrest arm (30) and the elbow rest member are positioned close to the seat (7). (31) is fixed, and the armrest arm (30) or the elbow when the operator is operating the tractor (1) The armrest position for placing the elbow on the foot member (31), and the armrest arm (30) and the elbow rest member (31) are fixed at a position far from the seat (7), and the operator attaches to the tractor (1). When getting on and off, it can be held at the position of the assist bar that grips the armrest arm (30) or the elbow rest member (31). The set effect can be obtained. Further, even when the operation panel is disposed below the armrest, the operation panel can be operated by moving the armrest arm and the arm base.

According to a second aspect of the present invention, in the armrest of the tractor according to the first aspect, there is elasticity between the tip side of the arm base (32) and a locking member (37) provided on the bottom surface of the armrest base (40). It connects with a member (38), this locking member (37) is located below the pivot (43) which pivotally supports this arm base (32), and this armrest arm (30) and elbow rest member When (31) rotates between the armrest position and the assist bar position, the fulcrum is exceeded, and the armrest arm (30) and the elbow rest member (31) are elastic at the armrest position and the assist bar position. Since the armrest arm and the arm base are always urged downward, the armrest can be moved when the armrest arm and the arm base are rotated during traveling and getting on and off. Position It can be held stably in the assist bar position.

According to a third aspect of the present invention, in the armrest of the tractor according to the first aspect, the arm base (32) includes an arm portion (32a) and a cylindrical portion (32b), and forwards from the arm portion (32a). An armrest (30) is protruded, and the cylindrical portion (32b) is pivotally fitted to the pivot shaft (43), and a fitting portion between the cylindrical portion (32b) and the pivot shaft (43). A plurality of lock grooves (43a, 43b) are provided corresponding to the armrest position and the assist bar position, and the lock protrusions (33b) fitted into the lock grooves (43a, 43b) are provided with the armrest arms (30 ) And the operation member (34) are operated, and the lock projection (33b) is fitted into the lock grooves (43a, 43b), and the armrest position or the assist bar is operated. Lock mechanism is configured to lock in position Because, since the locking protrusions of the link member is fixed by the locking groove, in the time of traveling in or boarding, it becomes possible to securely hold the armrest arm and arm base armrest position or assist bars located.

  In addition, the lock projection of the link member prevents the pivot shaft and the arm base from rotating relative to each other, so that the armrest arm and the arm base can be stably positioned at the armrest position or the assist bar position even during traveling or when getting on and off. It becomes possible to hold.

  Next, embodiments of the invention will be described.

  1 is a left side view showing an overall configuration of a tractor 1 according to an embodiment of the present invention, FIG. 2 is a left side sectional view showing a state where an armrest arm 30 is at a top dead center position, and FIG. 3 is an armrest. FIG. 4 is a front perspective view showing a state where the arm 30 is held at the assist bar position (seat seat outer position), FIG. 4 is a front perspective view showing a state where the armrest arm 30 is held at the arm rest position (seat seat inner position), and FIG. FIG. 6 is a plan view showing a state where the armrest arm 30 is held at the armrest position (seat seat inner position), and FIG. 7 is an armrest. FIG. 8 is a rear perspective view showing the arm base 32 and the pivot shaft 43, and FIG. 9 is the arm base 32 and the pivot support. 43 is a rear view of another embodiment of.

  First, the overall configuration of the tractor 1 according to an embodiment of the present invention will be described. As shown in FIG. 1, front wheels 2 and 2 and rear wheels 3 and 3 are supported on the front and rear of the vehicle body, an engine 5 is disposed inside the front bonnet 4, and a steering handle described later is disposed behind the bonnet 4. 6, and a seat seat 7 is disposed behind the steering handle 6. Further, a main transmission lever and the like are disposed on the side portion of the seat 7.

  The engine 5 is supported on the body frame 8 by vibration isolation, and a drive shaft 9 and a mission case 11 are disposed at the rear of the engine 5. The driving force of the engine 5 is transmitted to the transmission case 11 by the drive shaft 9 and is shifted by the transmission case 11 to drive the rear wheels 3 and 3 via a rear axle (not shown). The driving force can also be transmitted to the front wheels 2 and 2 via.

  Further, the driving force of the engine 5 is transmitted to a PTO shaft (not shown) protruding from the rear end of the mission case 11, and from the PTO shaft via a universal joint or the like, via a work implement mounting device 13 disposed at the rear end of the machine body. A work machine (not shown) to be attached is configured to be driven. In addition, a hydraulic case 10 is placed on the upper part of the mission case 11, and a hydraulic cylinder is accommodated in the hydraulic case 10 so that the lift arms 19, 19 can be rotated.

  The work implement mounting device 13 is configured as a lifting link device having a three-point link structure by a top link 20 and a lower link 21, 21, and the rotation of the lift arm 19 is transferred to the lower link 21, 21 via a lift rod. In other words, various work machines mounted on the work machine mounting apparatus 13 can be moved up and down.

  A dashboard 23 is provided at the rear of the bonnet 4, and the dashboard 23 covers and covers a power steering valve, a radiator, and the like (not shown). An instrument panel, a key switch, and a forward / reverse switching lever 22 are provided on the dashboard 23. Etc. are arranged. A step cover is provided at the rear lower part of the dashboard 23 and a step cover is provided to form a step 25. The step 25 is fixed to the body frame 8 via a stay or the like.

  Above the rear wheels 3 and 3, fenders 26L and 26R made of iron plates that cover the respective rear wheels 3 and 3 are arranged. More specifically, a fender post is erected on the upper portion of a rear axle case (not shown) supported by the body frame 8, and the fenders 26L and 26R are fixed on the upper portion of the fender post.

  An armrest base 40 is welded and fixed to the upper portion of the fender 26L, and the armrest 100 of the present invention is supported by the armrest base 40 as shown in FIGS. However, the attachment of the armrest base 40 to the fender 26L is not limited to welding, and may be fixed using a member such as a bolt. Further, the armrest base 40 may be configured to be fixed to the base of the seat 7 fixed to the body frame 8 or directly to the body frame 8, or to the armrest base 40 via a stay or the like. It may be configured.

  The configuration of the armrest 100 of the present invention will be described with reference to FIGS. However, for ease of explanation, FIGS. 3 to 7 show a state in which the left wall of the upper cover 41 described later is removed, and FIG. 6 shows a state in which the upper cover 41 is removed. As shown in FIG. 2, the armrest base 40 is made of steel or the like in a substantially L shape in a side view, and as described above, the bottom surface 40a is fixed on the fender 26L by welding or bolting. A pivot shaft 43 for pivotally supporting an arm base 32 to be described later is fixedly installed on the front wall 40b of the armrest base 40 so as not to rotate. One end (front side) of the pivot shaft 43 is fitted into the front wall 40b of the armrest base 40 and fixed by welding or the like, and the other side (rear side) extends horizontally into the upper cover 41. Yes.

  An arm base 32 is rotatably fitted on the pivot shaft 43. The arm base 32 includes an arm portion 32a and a cylindrical portion 32b. As shown in FIGS. 7 and 8, the arm portion 32a is formed of a steel plate or the like in a substantially oval shape when viewed from the back, and the lower end side (pivot) of the arm portion 32a. The width in the left-right direction on the side pivotally supported by the support shaft 43 is formed wider than the upper end side, so that the cylindrical portion 32b can be fixed and stably supported. And the cylindrical armrest arm 30 is extended and fixed ahead from the upper side of the arm part 32a. A cylindrical elbow rest member 31 formed of resin, sponge, or the like is externally fitted to the front portion of the armrest arm 30. Thus, the arm base 32, the armrest arm 30, and the elbow rest member 31 can be turned left and right around the pivot shaft 43.

  Then, as shown in FIG. 3, a lock mechanism is provided to fix the two positions, that is, the armrest arm 30 and the elbow rest member 31 at a position far from the seat 7 (hereinafter referred to as an assist bar position). It plays the role of an assist bar for grasping when getting on and off the tractor 1 or, as shown in FIGS. 4 to 7, the armrest arm 30 and the elbow rest member 31 are positioned close to the seat 7 (hereinafter referred to as armrests). The position of the armrest is fixed when the operator is operating the tractor 1.

  As shown in FIG. 2, the lock mechanism includes an operation button 34 serving as an operation member, a link member 33, and the like, and the operation button 34 is disposed so as to protrude forward from the front end of the elbow rest member 31 or the armrest arm 30. Specifically, the front end of the link member 33 is connected to the rear portion of the operation button 34, and a spring 35 is disposed between the operation button 34 and the elbow rest member 31 or the armrest arm 30, and the operation button 34 projects forward. At the same time, the spring 35 is biased in a direction in which a lock projection 33b provided at the other end of the link member 33 described later is fitted into the lock groove 32d.

  The link member 33 has a rod-like body that is substantially L-shaped, and a horizontal portion 33 a of the link member 33 extends rearward through a hollow portion provided at the center of the armrest arm 30. A vertical portion 33c is formed by extending from the rear end toward the center of the pivot shaft 43 at a right angle, and a boundary portion between the outer periphery of the pivot shaft 43 and the inner periphery of the cylindrical portion 32b at the lower portion of the vertical portion 33c. A lock projection 33b protruding forward is formed. In this embodiment, the link member 33 is integrally formed by bending a square bar into an L-shape, and the through-hole 32e formed in the armrest arm 30 is formed in a quadrangular shape in cross-section so that the link member 33 is formed. Is inserted into the through-hole 32e of the armrest arm 30 so as to be slidable in the axial direction and not relatively rotatable.

  As shown in FIGS. 7 and 8, the lock grooves into which the lock protrusions 33b constituting the lock mechanism are inserted are formed on the outer periphery of the rear end of the pivot shaft 43 and the inner periphery of the rear end of the cylindrical portion 32b. Thus, the armrest arm 30 can be fixed at the assist bar position and the armrest position by fitting the lock convex portions 33b into both grooves. That is, the outer peripheral position of the pivot shaft 43 where the vertical portion 33c is located when the armrest arm 30 is inclined outwardly away from the seat 7 with the pivot shaft 43 as the center (for example, the vertical position passing through the center of the pivot shaft 43). A lock groove 43a into which approximately half of the lock projection 33b enters is formed in the outer side of the machine body (position rotated 45 degrees counterclockwise), and the armrest arm 30 is located on the seat seat 7 side with the pivot shaft 43 as the center. The projection is locked to the outer peripheral position of the pivot shaft 43 where the vertical portion 33c is located when tilted to the right (for example, a position rotated 45 degrees from the vertical line passing through the center of the pivot shaft 43 toward the center of the machine body (clockwise)). A lock groove 43b into which about half of the portion 33b (the pivot shaft center side) enters is formed. Further, a lock groove 32d into which about half of the lock protrusion 33b (the outer periphery of the pivot shaft) enters is formed in the inner periphery of the rear end of the cylindrical portion 32b where the vertical portion 33c is located, and the lock protrusion 33b is formed in the lock groove 43a Or it is set as the structure which locks so that the armrest arm 30 may not rotate with respect to the pivot shaft 43 by inserting over both the lock groove 43b and the lock groove 32d.

  With this configuration, when the operator pushes the operation button 34 backward against the restoring force of the spring 35, the spring 35 is contracted, and the elbow rest member 31, the armrest arm 30, and the arm base 32 are moved in the front-rear direction. Only the operation button 34 and the link member 33 slide backward without moving. Conversely, when the operator releases the operation button 34, the operation button 34 and the link member 33 fixed to the operation button 34 are pushed back by the restoring force of the spring.

  Further, the armrest arm 30 can be held at the assist bar position and the armrest position when the armrest arm 30 is rotated left and right by a fulcrum passing mechanism different from the lock mechanism. That is, as shown in FIGS. 2, 5, 6, and 7, a locking member 36 formed by bending a plate-like member on the rear surface of the upper portion of the arm portion 32 a of the arm base 32 faces rearward by welding or the like. On the other hand, on the bottom surface 40a of the armrest base 40, a locking member 37 formed by bending a plate-like member into a substantially U shape in a side view is fixed by a bolt 39 or the like. On both sides of the locking members 36 and 37, an elastic member such as a spring 38 that is longer than the natural length is locked. Here, the connecting portion of the locking member 37 and the spring 38 is positioned below the rotation fulcrum of the arm base 32.

  That is, the upper portion of the arm base 32, more specifically, the portion where the locking member 36 of the arm base 32 is fixed is always biased downward, and the arm base 32, the armrest arm 30, and the elbow rest member 31 are 3, the fulcrum is exceeded at the upper fulcrum shown in FIG. 2, for example, between the assist bar position shown in FIG. 3 and the armrest position shown in FIG.

  As shown in FIGS. 4 to 7, when the operator releases the operation button 34 with the arm base 32, the armrest arm 30, the elbow rest member 31, and the link member 33 positioned at the armrest position, the spring 35, the operation button 34 and the link member 33 slide forward, and the lock projection 33b is inserted into the lock grooves 32d and 43b. As described above, when the lock protrusion 33 b of the link member 33 is inserted into the lock groove 43 b formed on the pivot shaft 43 fixed to the armrest base 40 and the lock groove 32 d formed on the arm base 32. The lock projection 33b engages with both the arm base 32 and the pivot shaft 43, and the arm base 32 and the pivot shaft 43 cannot be rotated relative to each other. As a result, the arm base 32, the armrest arm 30, and the elbow rest member 31 are prevented. Can be made non-rotatable in the state shown in FIGS.

  When the operator pushes the operation button 34 rearward, the link member 33 slides backward in the armrest arm 30, and the lock projection 33 b comes out of the lock grooves 32 d and 43 b, so that the pivot shaft 43 is not moved. Thus, the arm base 32 can be relatively rotated. As a result, the operator can move the armrest arm 30 and the elbow rest member 31 over the fulcrum against the urging force of the spring 38 (see FIG. 2). 3 can be rotated to the assist bar position shown in FIG.

  As shown in FIG. 3, when the operator releases the operation button 34 with the arm base 32, the armrest arm 30, the elbow rest member 31, and the link member 33 positioned at the assist bar position, the spring 35 is pressed. Then, the operation button 34 and the link member 33 slide forward, and the lock projection 33b is inserted into the lock grooves 32d and 43a. As described above, when the lock protrusion 33 b of the link member 33 is inserted into the lock groove 43 a formed on the pivot shaft 43 fixed to the armrest base 40 and the lock groove 32 d formed on the arm base 32. As described above, the arm base 32 and the pivot shaft 43 are engaged with the lock projection 33b, so that the arm base 32 and the pivot shaft 43 cannot be rotated relative to each other. As a result, the arm base 32, the armrest arm 30 and the elbow rest The member 31 can be made unrotatable in the state shown in FIG.

  Here, the hole of the lock groove 32d and the hole of the lock groove 43a or the lock groove 43b are made larger than the size of the cross section of the lock protrusion 33b so that the lock protrusion 33b of the link member 33 can be easily fitted. It is preferable to form it. Further, without providing the lock groove on the arm base 32 side, the arm base 32, the armrest arm 30, and the elbow are formed by fitting the lock protrusion 33 b into the lock groove 43 a or the lock groove 43 b, that is, depending on the rigidity of the link member 33. It is good also as a structure which makes the placing member 31 non-rotatable.

  As described above, in this embodiment, the link member 33 is integrally formed by bending a square bar into an L shape, but the link member 33 may be formed of a round bar or the like, as shown in FIG. As described above, the guide member 32 f may be provided on the arm portion 32 a so that the link member 33 does not rotate relative to the armrest arm 30. In this case, according to the cross-sectional shape of the link member 33, the through hole 32e is formed in a circular shape in cross-sectional view, and the lock grooves 32d, 43a, and 43b are formed in a semicircular shape in cross-sectional view.

  Here, the elbow rest member 31 is not limited to a cylindrical shape, and may be one having an outer periphery formed in a polygonal column. Further, the inner circumference of the elbow rest member 31 and the outer circumference of the armrest arm 30 are not limited to a cylindrical shape, and both may be formed in a polygonal column shape. That is, the elbow rest member 31 and the armrest arm 30 may be pivotally supported or may be fixed so as not to rotate.

  The arm base 32, the rear part of the link member 33, the locking members 36 and 37, the spring 38, the pivot shaft 43 and the like are covered with an upper cover 41 formed of resin, stainless steel or the like. Specifically, the upper cover 41 is a substantially box-shaped container with a bottom surface and a lower portion of the front wall omitted. The lower end of the rear surface is bent rearward to form a flange portion 41b. The flange portion 41b is connected to the armrest base 40. It is fixed to the rear end portion by bolts 42.

  In this manner, the armrest 100 of the tractor 1 provided on the armrest base 40 disposed in the vicinity of the seat 7, the arm base 32 is pivotally supported on the armrest base 40, and the tip of the arm base 32 is Since the armrest arm 30 is fixed on the side, and the arm base 32 is configured to be rotatable between the armrest position and the assist bar position, the armrest 100 and the assist bar are not hindered from making the tractor 1 compact. The effect of arranging both can be obtained. Even when the operation panel is disposed below the armrest 100, the operation panel can be operated by moving the armrest arm 30 and the arm base 32, which hinders design in the vicinity of the seat 7. It is hard to become.

  In addition, since the distal end side of the arm base 32 and the bottom surface 40a of the armrest base 40 are connected by an elastic member 38, the arm base 32 is configured to be held at the armrest position and the assist bar position. Since the arm 30 and the arm base 32 are always urged downward, the armrest position or the assist bar position is reached when the armrest arm 30 and the arm base 32 are rotated during traveling or getting on and off. It becomes possible to hold stably.

  In addition, a plurality of lock grooves 43 a and 43 b are provided at a boundary portion between the arm base 32 and the pivot shaft 43, and an operation member 34 provided with a lock convex portion 33 b fitted into the lock grooves 43 a and 43 b on the armrest arm 30. Since the locking mechanism 33 is configured by connecting the armrest arm 30 and the arm base 32 to the armrest even during traveling and getting on and off, the locking protrusion 33b of the link member 33 is fixed by the locking grooves 43a and 43b. The position or the assist bar position can be reliably held.

  Further, since the lock grooves 43a and 43b are provided corresponding to the arm rest position and the assist bar position, the pivot shaft 43 and the arm base 32 cannot be rotated relative to each other by the lock convex portion 33b of the link member 33. The armrest arm 30 and the arm base 32 can be stably held at the armrest position or the assist bar position even during traveling or when getting on and off.

The left view which showed the whole structure of the tractor 1 which concerns on one Example of the tractor of this invention. The left side sectional view showing the state where armrest arm 30 is made into the top dead center position. The front perspective view which shows the state which hold | maintained the armrest arm 30 in the assist bar position (seat seat outer side position). The front perspective view which shows the state which hold | maintained the armrest arm 30 in the armrest position (seat seat inner side position). The left view which shows the state which hold | maintained the armrest arm 30 in the armrest position (seat seat inner side position). The top view which shows the state which hold | maintained the armrest arm 30 in the armrest position (seat seat inner side position). The rear perspective view which shows the state which hold | maintained the armrest arm 30 in the armrest position (seat seat inner side position). The rear view which shows the arm base 32 and the pivot shaft 43. FIG. The rear view which shows another Example of the arm base 32 and the pivot shaft 43. FIG.

DESCRIPTION OF SYMBOLS 1 Tractor 7 Seat seat 26 Fender 30 Armrest arm 32 Arm base 33 Link member 33b Lock convex part 34 Operation member (operation button)
38 Elastic member 40 Armrest base 43 Pivot shaft 43a / 43b Lock groove 100 Armrest

Claims (3)

The armrest base (40) is disposed on the fender (26) in the vicinity of the seat seat (7), the armrest (100) of the tractor (1) is provided on the armrest base (40), and the armrest base (40 ) Is provided with a pivot shaft (43) in the front-rear horizontal direction, and an arm base (32) is pivotally supported on the pivot shaft (43). An arm (30) is protruded, an elbow rest member (31) is externally fitted and fixed to the distal end side of the armrest arm (30), and the arm base (32) is centered on the pivot shaft (43). The armrest arm (30) and the elbow rest member (31) can be moved in parallel by rotating left and right, and the armrest arm (30) and the elbow rest member (31) are fixed at a position close to the seat (7). When the operator is maneuvering the tractor (1), the arm rests on the armrest arm (30) or the elbow rest member (31). The armrest arm (30) and the elbow rest member (31) are fixed at a position far from the seat seat (7) and the armrest arm (30), and when the operator gets on and off the tractor (1), the armrest arm (30) or an assist bar position for gripping the elbow rest member (31). The armrest position is such that the armrest arm (30) is parallel to the pivot axis (43) and the pivot axis ( 43) is a position on the machine body center side with respect to a vertical line passing through the center of 43), and the assist bar position is such that the armrest arm (30) is parallel to the pivot shaft (43) and the pivot shaft. (43) The armrest of the tractor characterized by being set as a position on the outside of the airframe with respect to a vertical line passing through the center of (43) . The armrest of the tractor according to claim 1, wherein an elastic member (38) connects between a distal end side of the arm base (32) and a locking member (37) provided on a bottom surface of the armrest base (40). The locking member (37) is positioned below the pivot shaft (43) that pivotally supports the arm base (32), and the armrest arm (30) and the elbow rest member (31) are armrests. When pivoting from the position to the assist bar position, the fulcrum is exceeded, and the armrest arm (30) and the elbow rest member (31) can be elastically held at the armrest position and the assist bar position. A tractor armrest characterized by that. The armrest of the tractor according to claim 1, wherein the arm base (32) includes an arm portion (32a) and a cylindrical portion (32b), and the armrest arm (30) is moved forward from the arm portion (32a). The cylindrical portion (32b) is protruded and pivotally supported on the pivot shaft (43), and a plurality of lock grooves are formed in a fitting portion between the cylindrical portion (32b) and the pivot shaft (43). (43a, 43b) is provided corresponding to the armrest position and the assist bar position, and a lock projection (33b) fitted into the lock groove (43a, 43b) is provided on the armrest arm (30). The lock projection (33b) is fitted into the lock groove (43a, 43b) and is locked at the armrest position or the assist bar position by connecting to (34) and operating the operation member (34). characterized in that to constitute a mechanism Armrest of Rakuta.

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