Mirroring device and riding management machine

Abstract

To provide a mirror device which can easily operate a pair of mirrors provided on the left and right.SOLUTION: A mirror device comprises: a first mirror 130 having a first mirror bracket 132 which is rotatably provided; a second mirror 140 having a second mirror bracket 142 which is rotatably provided; and a connection member 101 connected between the first mirror 130 and the second mirror 140 so that in association with rotation of one of the first mirror 130 and the second mirror 140, the other of the first mirror 130 and the second mirror 140 rotates.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present disclosure relates to a mirror device and a boarding management machine.

Background Art

[0002] Patent Document 1 discloses a boom player as a boarding management machine. This boom player includes a vehicle having a cabin, and a right boom and a left boom positioned along the left and right sides of the vehicle in a storage position. The vehicle is provided with a side floor to improve the boarding and alighting performance to the cabin.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the boarding management machine as described above, a pair of mirrors (so-called side mirrors) protruding to the left and right sides of the cabin may be provided so that the rear can be confirmed from inside the cabin. In this case, it is conceivable to provide the mirrors so that they can be folded, that is, switched between a deployed state and a stored state. However, when the operation of the mirrors is performed electrically, the manufacturing cost may increase. On the other hand, when not relying on electric control, the user will operate the right mirror while standing on the side floor provided on the right side of the vehicle, for example, and operate the left mirror while standing on the side floor provided on the left side of the vehicle.

[0005] An object of the present disclosure is to provide a mirror device and a boarding management machine that can easily operate a pair of mirrors.

Means for Solving the Problems

[0006] One example of a mirror device includes a first mirror (130) having a first mirror bracket (132) rotatably mounted around a first pivot axis (L1), a second mirror (140) having a second mirror bracket (142) rotatably mounted around a second pivot axis (L2) parallel to the first pivot axis (L1), and a connecting member (101) connected between the first mirror (130) and the second mirror (140) such that rotation of either the first mirror (130) or the second mirror (140) causes the other of the first mirror (130) or the second mirror (140) to rotate.

[0007] In the mirror device described above, a connecting member (101) is connected between the first mirror (130) and the second mirror (140), so that when one of the mirrors rotates, the other rotates as well. That is, for example, simply rotating the first mirror (130) will cause the second mirror (140) to rotate as well. Therefore, the pair of mirrors can be easily operated.

[0008] One example of a connecting member (101) is a rod-shaped member having a first end (101a) and a second end (101b) on the opposite side of the first end (101a). The first end (101a) is rotatable around a third pivot axis (L3) located at a position spaced apart from the first pivot axis (L1) of the first mirror (130), and the second end (101b) may be rotatable around a fourth pivot axis (L4) located at a position spaced apart from the second pivot axis (L2) of the second mirror (140). In this configuration, the operation of the first mirror (130) and the second mirror (140) can be linked by a connecting member (101) having a simple rod-shaped structure.

[0009] In one example, when viewed from the axial direction of the first and second rotation axes (L1 and L2), if the line connecting the first and second rotation axes (L2) is defined as the reference line (S), the third and fourth rotation axes (L3 and L4) may be located on opposite sides of the reference line (S). In this configuration, the direction of rotation of the first mirror (130) and the second mirror (140) can be set to be opposite to each other.

[0010] One example of a mirror device may further include a first fixing bracket (110) provided with a first pivot axis (L1). The first fixing bracket (110) may have a first contact portion (112b) that contacts the first mirror bracket (132) to restrict the rotation of the first mirror (130) in a first direction with respect to the first pivot axis (L1), and a second contact portion (112c) that contacts the first mirror bracket (132) to restrict the rotation of the first mirror (130) in a second direction opposite to the first direction with respect to the first pivot axis (L1). In this configuration, the first mirror (130) and the second mirror (140) can be rotated within a predetermined range of motion.

[0011] One example of a mirror device may further include an elastic member (119) connecting a first fixing bracket (110) and a first mirror bracket (132). The elastic member (119) can bias the first mirror (130) in a first direction to maintain a first state when the first contact portion (112b) is in contact with the first mirror bracket (132), and can bias the first mirror (130) in a second direction to maintain a second state when the second contact portion (112c) is in contact with the first mirror bracket (132). In this configuration, the rotational position of the first mirror (130) is stable in either the first or second state.

[0012] One example of a ride-on management machine includes a vehicle body (2) having a cabin (4) and a side floor (20) provided on at least one of the left or right sides of the cabin (4), and one of the aforementioned mirror devices (100) provided on the upper part of the front (4a) of the cabin (4). When operating the mirror device (100) in such a ride-on management machine, both mirrors can be rotated by standing on the side floor (20) and operating one of the mirrors. [Effects of the Invention]

[0013] According to this disclosure, a mirror device and a ride-on management machine can be provided that allow for easy operation of a pair of mirrors located on the left and right sides. [Brief explanation of the drawing]

[0014] [Figure 1] Figure 1 is a perspective view showing an example of a boom sprayer. [Figure 2] Figure 2 shows the front view of an example boom sprayer. [Figure 3] Figure 3 is a perspective view showing an example of a mirror device. [Figure 4] Figure 4 is an exploded perspective view showing the main components of an example mirror device. [Figure 5] Figure 5 is a plan view showing an example of a mirror device in an open state. [Figure 6] Figure 6 is a plan view showing an example of a mirror device in a closed state. [Modes for carrying out the invention]

[0015] Embodiments of the present invention will be described below with reference to the drawings. In each drawing, the same or corresponding elements are denoted by the same reference numerals, and redundant explanations are omitted.

[0016] FIG. 1 is a perspective view of a boom sprayer as an example, seen from the front side. FIG. 2 is a perspective view showing an enlarged front surface of a boom sprayer as an example. In FIG. 2, a state in which the mirror device is disassembled is shown. The boom sprayer 1 is a vehicle-mounted management machine (spraying work vehicle) including, for example, a self-propelled vehicle 2 and a boom device 3 for spraying a chemical solution. The boom sprayer 1 sprays a chemical solution (chemical agent) while running the vehicle 2 in a field. In the following description, "up", "down", "front", "rear", "left", and "right" are based on the boom sprayer 1 unless otherwise specified. Also, "clockwise" and "counterclockwise" are based on the state seen from above unless otherwise specified.

[0017] The vehicle 2 has a cabin 4 which is an operator's cockpit. A door 7 for entering and exiting the cabin 4 is provided on the left side surface of the cabin 4. An engine room 5 for housing an engine is provided at the rear of the vehicle 2. A chemical solution tank 6 for storing the chemical solution sprayed from the boom device 3 is provided between the cabin 4 and the engine room 5. The cabin 4 is installed at the front of the vehicle 2, and the chemical solution tank 6 is installed behind the cabin 4. The vehicle 2 includes a pair of front wheels W1 and a pair of rear wheels W2.

[0018] The boom device 3 includes a center boom 3a, a right boom 3b, and a left boom 3c. When spraying a chemical solution, the right boom 3b and the left boom 3c are spread so as to protrude from the vehicle 2 in the right direction and the left direction, respectively. A liquid supply pipe is provided along each of the center boom 3a, the right boom 3b, and the left boom 3c. A plurality of chemical solution nozzles N are attached to the liquid supply pipe. The boom device 3 sucks the chemical solution from the chemical solution tank 6, pumps it to the liquid supply pipe, and injects the chemical solution from the plurality of chemical solution nozzles N provided in the liquid supply pipe.

[0019] When the chemical liquid spraying is not carried out, the right boom 3b and the left boom 3c are folded and stored in a state of being obliquely rearward and upward at the side position of the vehicle 2 as shown in FIG. 1. The right boom 3b is supported by a boom receiver erected upward from the rear part of the vehicle 2 at the stored position. The left boom 3c is supported by a boom receiver erected upward from the rear part of the vehicle 2 at the stored position.

[0020] In addition, the boom sprayer 1 includes a side floor 20 in order to improve the boarding and alighting performance. The side floor 20 is a portion that protrudes laterally from the left side edge of the cabin 4 and is provided at the same height position as the floor surface of the cabin 4. In the illustrated example, the height of the side floor 20 is higher than the position of the upper end of the front wheel W1. A step 21 for an operator to step on when boarding and alighting is formed on the side floor 20. In the boom sprayer 1 of this example, a side floor is provided only on the left side of the cabin 4, and no side floor is provided on the right side of the cabin 4. Therefore, no door for entry and exit is provided on the right side surface of the cabin 4.

[0021] A mirror device 100 is provided at the upper part of the front surface 4a of the cabin 4. As shown in FIG. 2, the front surface 4a of the cabin 4 includes a first frame portion 41 extending in the vertical direction at the left end edge, a second frame portion 42 extending in the vertical direction at the right end edge, and a windshield 43 fitted between the first frame portion 41 and the second frame portion 42. At the upper parts of the first frame portion 41 and the second frame portion 42, first attachment pieces 41a and second attachment pieces 42a protruding forward are provided respectively. Bolt holes 41b, 42b for attaching the mirror device 100 are formed in the first attachment piece 41a and the second attachment piece 42a. The mirror device 100 can be switched between a deployed state (first state) suitable for rearward confirmation and a stored state (second state) in which the width in the left-right direction is narrower than in the deployed state while being fixed to the front part of the cabin 4.

[0022] Figure 3 is a perspective view showing the mirror device 100. In Figure 3, the entire mirror device 100 in its deployed state is shown, as well as a close-up view of the main parts of the mirror device 100. Figure 4 is an exploded perspective view showing the main parts of the mirror device. Figure 5 is a plan view showing the mirror device 100. In Figure 5, the entire mirror device 100 in its deployed state is shown, as well as a close-up view of the main parts of the mirror device 100. Figure 6 is a plan view showing the mirror device 100. In Figure 6, the entire mirror device 100 in its retracted state is shown, as well as a close-up view of the main parts of the mirror device 100.

[0023] As shown in Figures 3 to 6, the mirror device 100 comprises a first fixing bracket 110, a second fixing bracket 120, a first mirror 130, a second mirror 140, a connecting member 101, and elastic members 119 and 129. The first fixing bracket 110 and the second fixing bracket 120 are fastened to a first mounting piece 41a and a second mounting piece 42a provided on the front surface 4a of the cabin 4 by fastening members such as bolts and nuts.

[0024] The first fixing bracket 110 is fixed to a first mounting piece 41a provided on the left side of the cabin 4. The first fixing bracket 110 includes a first side wall 111 that abuts against the front surface of the first mounting piece 41a, an upper wall 112 that protrudes forward from the upper edge of the first side wall 111, a lower wall 113 that protrudes forward from the lower edge of the first side wall 111, and a second side wall 114 that protrudes forward from the center of the right edge of the first side wall 111. As shown in Figure 4, the first side wall 111 is provided with bolt holes 111a at two locations, upper and lower, for fastening to the first mounting piece 41a. The upper wall 112 and the lower wall 113 face each other. The upper wall 112 has a circular through hole 112h that penetrates the upper wall 112 in the vertical direction. Similarly, a circular through-hole 113h is formed in the lower wall 113, penetrating it vertically. The position of the through-hole 112h in the upper wall 112 and the position of the through-hole 113h in the lower wall 113 coincide when viewed from the vertical direction. The center of the through-hole 112h coincides with the first pivot axis L1, which will be described later.

[0025] In one example, the upper wall 112 and the lower wall 113 have the same shape when viewed from above. The upper wall 112 will be described as an example. The upper wall 112 in the illustrated example is roughly trapezoidal in shape and has a lower base portion 112a which is the connection part with the first side wall 111, an upper base portion 112b which is opposite to the lower base portion 112a, and a pair of leg portions 112c, 112d which connect the lower base portion 112a and the upper base portion 112b. The upper base portion 112b (first contact portion) and the lower base portion 112a extend along the left-right direction. The right leg portion 112c (second contact portion) which is closer to the second fixing bracket 120 is inclined to the left as it moves from the lower base side towards the upper base side (i.e., towards the front). The left leg portion 112d extends along the front-back direction, for example.

[0026] A connector 114a for connecting one end of the elastic member 119 is attached to the second side wall 114 (see Figure 5). The connector 114a may be, for example, a ring bolt with a ring-shaped head. When viewed from above, the position of the ring portion of the connector 114a is located behind the position of the through hole 112h formed in the upper wall 112 in the front-rear direction.

[0027] The second fixing bracket 120 is fixed to a second mounting piece 42a provided on the right side of the cabin 4. The second fixing bracket 120 has the same configuration as the first fixing bracket 110 and includes a first side wall 121, an upper wall 122 with a through hole 122h formed therein, a lower wall 123 with a through hole (not shown) formed therein, and a second side wall 124. The second fixing bracket 120 is positioned such that the second side wall 124 faces the second side wall 114 of the first fixing bracket 110. Therefore, as shown in Figure 5, the upper bottom portion 122b (third contact portion) that constitutes the periphery of the upper wall 122 extends in the left-right direction when viewed from the vertical direction, and the left leg portion 122c (fourth contact portion) that is closer to the first fixing bracket 110 is inclined to the right as it moves from the lower bottom side towards the upper bottom side (i.e., towards the front side).

[0028] A connector 124a for connecting one end of the elastic member 129 is attached to the second side wall 124. The connector 124a may be, for example, a ring bolt with a ring-shaped head. When viewed from above, the position of the ring portion of the connector 124a is behind the position of the through hole formed in the upper wall 122.

[0029] As shown in Figure 3, the first mirror 130 includes a mirror body 131 on which a mirror surface 131a is formed, and a first mirror bracket 132 that supports the mirror body 131. The mirror body 131 is, for example, substantially rectangular in shape. On the back surface of the mirror body 131 opposite to the mirror surface 131a, a fixing portion 131b is provided for fixing the mirror body 131 to the first mirror bracket 132.

[0030] The first mirror bracket 132 is rotatably mounted around a first pivot axis L1 (see Figure 5) that passes through a through hole 112h. For example, the first mirror bracket 132 is a long member whose longitudinal direction is the horizontal direction, which intersects the first pivot axis L1. The mirror body 131 is provided at one end of the first mirror bracket 132 in the longitudinal direction.

[0031] As shown in Figure 3, the first mirror bracket 132 includes an upper wall 133 and a lower wall 134 that face each other in the vertical direction, and a side wall 135 connecting the upper wall 133 and the lower wall 134. In the illustrated example, an opening 135a is formed in the central part of the side wall 135 in the left-right direction, and a notch 135b is formed at the right end. The notch 135b is the part through which the elastic member 119 passes, as will be described later.

[0032] In the first mirror bracket 132, a pivot shaft 133a is provided at the end opposite to the end to which the mirror body 131 is fixed, with respect to the first pivot axis L1. The first mirror bracket 132 is rotatably supported by the first fixing bracket 110 by being supported by a through hole 112h in the first fixing bracket 110 which is aligned in the vertical direction. As shown in Figure 4, pivot shafts 133a and 134a are provided on the upper wall 133 and lower wall 134 of the first mirror bracket 132. The pivot shaft 133a of the upper wall 133 protrudes downward through the upper wall 133 and a protruding piece 136 located on the upper surface of the upper wall 133 via a washer 133b. The protruding piece 136 is fixed to the upper wall 133. That is, the relative position of the protruding piece 136 with respect to the first mirror bracket 132 does not change. The pivot shaft 133a may be fixed to the protruding piece 136 and the upper wall 133 by welding or the like.

[0033] The pivot shaft 134a of the lower wall 134 protrudes downward through the lower wall 134. The pivot shaft 134a may be fixed to the lower wall 134 by welding or the like. The pivot shaft 133a of the upper wall 133 of the first mirror bracket 132 is inserted from above into the through hole 112h of the upper wall 112 of the first fixing bracket 110. The inserted pivot shaft 133a may be fixed by a retaining pin 133c. The pivot shaft 134a of the lower wall 134 of the first mirror bracket 132 is inserted from above into the through hole 113h of the lower wall 113 of the first fixing bracket 110.

[0034] The protruding piece 136 fixed to the upper wall 133 of the first mirror bracket 132 has a pivot axis 136a that protrudes upward from the protruding piece 136. When viewed from above, the position of the pivot axis 136a of the protruding piece 136 is spaced apart from the position of the pivot axis 133a. In Figure 5, when viewed from above, if the forward direction is the 12 o'clock direction with respect to the pivot axis 133a of the first mirror bracket 132, the pivot axis 136a of the protruding piece 136 in the deployed state is positioned approximately between the 10 o'clock and 12 o'clock directions.

[0035] The second mirror 140 includes a mirror body 141 on which a mirror surface 141a is formed, and a second mirror bracket 142 that supports the mirror body 141. The mirror body 141 is, for example, substantially rectangular in shape. On the back surface of the mirror body 141 opposite to the mirror surface 141a, a fixing portion 141b is provided for fixing the mirror body 141 to the second mirror bracket 142.

[0036] The second mirror bracket 142 is rotatably mounted around a second pivot axis L2 that passes through a through hole 122h. The second pivot axis L2 is parallel to the first pivot axis L1. For example, the second mirror bracket 142 is a long member whose longitudinal direction is the horizontal direction, which intersects the second pivot axis l2. The mirror body 141 is provided at one end of the second mirror bracket 142 in the longitudinal direction.

[0037] As shown in Figures 3 and 5, the second mirror bracket 142 has the same configuration as the first mirror bracket 132, and includes an upper wall 143 and a lower wall 144 that face each other in the vertical direction, and a side wall 145 that connects the upper wall 143 and the lower wall 144.

[0038] In the second mirror bracket 142, a pivot shaft 143a is provided at the end opposite to the end to which the mirror body 141 is fixed, with the pivot shaft centered on the second pivot axis L2 (see Figure 5). Similar to the first mirror bracket 132, the second mirror bracket 142 is rotatably supported by the second fixing bracket 120 by the pivot shaft 143a being supported by the through hole 122h of the second fixing bracket 120. That is, the upper wall 133 and lower wall 134 of the second mirror bracket 142 are provided with pivot shafts 143a and 134a, respectively.

[0039] The protruding piece 146 fixed to the upper wall 143 of the second mirror bracket 142 has a pivot axis 146a that protrudes upward from the protruding piece 146. When viewed from above, the pivot axis 146a of the protruding piece 146 is spaced apart from the pivot axis 143a. As shown in Figure 5, when viewed from above, if the forward direction is 12 o'clock with the pivot axis 143a as the center, the pivot axis 146a of the protruding piece 146 of the second mirror bracket 142 in the deployed state is located at approximately the 6 to 8 o'clock position.

[0040] When the first mirror bracket 132 rotates around the first pivot axis L1, the rotation of the first mirror bracket 132 can be restricted by a first contact portion formed by the upper base portion 112b of the first fixing bracket 110, and a second contact portion formed by the leg portion 112c, etc. That is, in order to move the first mirror 130 from the retracted state shown in Figure 6 to the deployed state shown in Figure 5, the first mirror bracket 132 is rotated counterclockwise (first direction) from the position shown in Figure 6. This rotation of the first mirror bracket 132 stops when the side wall 135 of the first mirror bracket 132 comes into contact with the upper base portion 112b when the first mirror bracket 132 has been rotated to the position shown in Figure 5. Also, in order to move the first mirror 130 from the deployed state shown in Figure 5 to the retracted state shown in Figure 6, the first mirror bracket 132 is rotated clockwise (second direction) from the position shown in Figure 5. The rotation of the first mirror bracket 132 stops when the first mirror bracket 132 is rotated to the position shown in Figure 6, and the side wall 135 of the first mirror bracket 132 comes into contact with the leg portion 112c.

[0041] Similarly, to move the second mirror 140 from the retracted state to the deployed state, the second mirror bracket 142 is rotated clockwise from the position shown in Figure 6. This rotation of the second mirror bracket 142 is restricted by the side wall 145 of the second mirror bracket 142 contacting the upper bottom portion 122b (third contact piece) when the second mirror bracket 142 is rotated to the position shown in Figure 5. Also, to move the second mirror 140 from the deployed state shown in Figure 5 to the retracted state shown in Figure 6, the second mirror bracket 142 is rotated counterclockwise from the position shown in Figure 5. This rotation of the second mirror bracket 142 is restricted by the second mirror bracket 142 contacting the leg portion 122c (fourth contact piece) when the second mirror bracket 142 is rotated to the position shown in Figure 6.

[0042] The connecting member 101 is connected between the first mirror 130 and the second mirror 140 such that when either the first mirror 130 or the second mirror 140 rotates, the other mirror 140 rotates as well. In this example, the connecting member 101 connects a pivot shaft 136a provided on a protruding piece 136 of the first mirror bracket 132 to a pivot shaft 146a provided on a protruding piece 146 of the second mirror bracket 142.

[0043] As shown in Figure 3, one example of a connecting member 101 extends in the left-right direction and has a rod-like shape with a first end 101a and a second end 101b on the opposite side of the first end 101a. In the illustrated example, the first end 101a is the left end and the second end 101b is the right end. Note that the rod-like shape may be a long shape, and for example, the connecting member 101 may be a long plate-like body extending in one direction.

[0044] As shown in Figure 4, the first end 101a of the connecting member 101 is provided with a circular through-hole 102a that penetrates the connecting member 101 vertically. In the illustrated example, the pivot shaft 136a of the protruding piece 136 is inserted through the through-hole 102a of the first end 101a and connected to the first end 101a by a fixing pin via a washer 103a placed on the upper surface. That is, the connecting member 101 is rotatably supported on the first mirror bracket 132 by the insertion of the pivot shaft 136a through the through-hole 102a, with the center of the through-hole 102a serving as the pivot axis (third pivot axis L3).

[0045] Similarly, the second end 101b of the connecting member 101 is provided with a circular through-hole 102b that penetrates the connecting member 101 vertically (see Figure 5). In the illustrated example, the pivot shaft 146a of the protruding piece 146 is inserted through the through-hole 102b of the second end 101b and connected to the second end 101b by a fixing pin via a washer 103b positioned on the upper surface. That is, the connecting member 101 is rotatably supported on the second mirror bracket 142 by the insertion of the pivot shaft 146b through the through-hole 102b, with the center of the through-hole 102b serving as the pivot axis (fourth pivot axis L4).

[0046] For example, as shown in Figure 5, when viewed from the axial direction of the first and second rotation axes L1 and L2, if the straight line connecting the first and second rotation axes L1 and L2 is defined as the reference line S, then the third and fourth rotation axes L3 and L4 are located on opposite sides of the reference line S.

[0047] The elastic member 119 connects the first fixing bracket 110 and the first mirror bracket 132. One example of the elastic member 119 is a tension coil spring. In the deployed state, the elastic member 119 biases the first mirror 130 in a counterclockwise direction (first direction) to maintain the deployed state, and in the retracted state, it biases the first mirror 130 in a clockwise direction (second direction) to maintain the retracted state. Another example of the elastic member 119 connects a connector 114a provided on the first fixing bracket 110 to a connecting portion 135c provided on the side wall 135 of the first mirror bracket 132. The connecting portion 135c protrudes from the side wall 135 along the protruding direction of the upper wall 133 and the lower wall 134.

[0048] Similarly, the elastic member 129 connects the second fixing bracket 120 and the second mirror bracket 142. In the deployed state, the elastic member 129 biases the second mirror 140 clockwise to maintain the deployed state, and in the retracted state, it biases the second mirror 140 counterclockwise to maintain the retracted state.

[0049] As described above, one example of a mirror device 100 includes a first mirror 130 having a first mirror bracket 132 that is rotatably supported about a first pivot axis L1, a second mirror 140 having a second mirror bracket 142 that is rotatably supported about a second pivot axis L2 that is provided parallel to the first pivot axis L1, and a connecting member 101 connected between the first mirror 130 and the second mirror 140 such that when either the first mirror 130 or the second mirror 140 rotates, the other of the first mirror 130 or the second mirror 140 rotates.

[0050] In such a mirror device 100, when switching from the deployed state to the retracted state, the operator stands, for example, on the side floor 20 and rotates the left-side first mirror 130 clockwise. When the mirror device 100 is in the deployed state, the side wall 135 of the first mirror bracket 132 is in contact with the first contact portion (upper bottom portion 112b, etc.), and the first mirror bracket 132 is biased counterclockwise by the elastic member 119. Also, the side wall 145 of the second mirror bracket 142 is in contact with the third contact portion (upper bottom portion 122b, etc.), and the second mirror bracket 142 is biased clockwise by the elastic member 129.

[0051] When the operator rotates the first mirror 130 clockwise, the first end 101a of the connecting member 101 moves clockwise along an arc centered on the first rotation axis L1. As the first end 101a moves, the second end 101b of the connecting member 101 moves counterclockwise along an arc centered on the second rotation axis L2. As the second end 101b moves, the second mirror bracket 142 rotates counterclockwise, causing the second mirror 140 to switch to the retracted state.

[0052] When switching between the deployed and retracted states, the elastic member 119 passes through the notched portion 135b, thereby crossing the first pivot axis L1 (so-called fulcrum crossing). As the elastic member 119 crosses the first pivot axis L1, the direction of the biasing force applied by the elastic member 119 to the first mirror bracket 132 is changed. The direction of the biasing force applied by the elastic member 129 is also changed by a similar mechanism.

[0053] In the retracted state, the side wall 135 of the first mirror bracket 132 is in contact with the second contact portion (leg portion 112c, etc.), and the first mirror bracket 132 is biased clockwise by the elastic member 119. Also, the side wall 145 of the second mirror bracket 142 is in contact with the fourth contact portion (leg portion 122c, etc.), and the second mirror bracket 142 is biased counterclockwise by the elastic member 129.

[0054] Furthermore, when switching from the retracted state to the deployed state, the operator, for example, stands on the side floor 20 and rotates the left-side first mirror 130 counterclockwise. When the first mirror 130 is rotated counterclockwise, the first end of the connecting member 101 moves counterclockwise along an arc centered on the first rotation axis L1. As the first end 101a moves, the second end 101b of the connecting member 101 moves clockwise along an arc centered on the second rotation axis L2. Then, as the second end 101b moves, the second mirror bracket 142 rotates clockwise, and the second mirror 140 also switches to the deployed state.

[0055] Thus, in the mirror device 100, a connecting member 101 is connected between the first mirror 130 and the second mirror 140, so that when one of the mirrors rotates, the other rotates as well. In other words, for example, simply rotating the first mirror 130 will cause the second mirror 140 to rotate as well. Therefore, the pair of mirrors can be easily operated.

[0056] In one example of a boom sprayer 1, the mirrors are positioned high up, making it difficult to operate them while standing on the ground. Furthermore, because the side floor 20 is only located on the left side of the cabin 4, it is difficult to directly operate the second mirror 140 on the right side. However, in this example of a boom sprayer 1, when operating the mirror device 100, by standing on the side floor 20 and operating the first mirror 130, not only the first mirror 130 but also the second mirror 140 can be operated.

[0057] One example of a connecting member 101 is a rod-shaped member having a first end 101a and a second end 101b. The first end 101a is rotatably supported on the first mirror 130 around a third pivot axis L3, which is spaced apart from the first pivot axis L1. The second end 101b may be rotatably supported on the second mirror 140 around a fourth pivot axis L4, which is spaced apart from the second pivot axis L2. In this configuration, the operation of the first mirror 130 and the second mirror 140 can be linked by the connecting member 101, which has a simple rod-shaped structure.

[0058] In one example, when viewed from the axial direction of the first and second rotation axes L1 and L2, and the straight line connecting the first and second rotation axes L1 and L2 is defined as the reference line S, the third and fourth rotation axes L3 and L4 may be located on opposite sides of the reference line S. In this configuration, the direction of rotation of the first mirror 130 and the direction of rotation of the second mirror 140 can be set to be opposite to each other.

[0059] One example of a mirror device 100 includes a first fixing bracket 110 provided with a first pivot axis L1, and a second fixing bracket 120 provided with a second pivot axis L2. The first fixing bracket 110 may have a first contact portion (upper bottom portion 112b) that contacts the first mirror bracket 132 to restrict the counterclockwise rotation of the first mirror 130 with the first pivot axis L1 as the pivot center, and a second contact portion (leg portion 112c) that contacts the first mirror bracket 132 to restrict the clockwise rotation of the first mirror 130 with the first pivot axis L1 as the pivot center. In this configuration, the first mirror 130 can be rotated within a predetermined range of rotation. This prevents the first mirror 130 from contacting the cabin 4.

[0060] One example of a mirror device 100 includes an elastic member 119 connecting a first fixing bracket 110 and a first mirror bracket 132. The elastic member 119 biases the first mirror 130 counterclockwise in the deployed state and biases the first mirror 130 clockwise in the retracted state. In this configuration, the rotational position of the first mirror 130 tends to stabilize in either the deployed or retracted position.

[0061] Although embodiments of the present invention have been described above, the specific forms of this disclosure are not limited to the examples described above.

[0062] For example, an example has been shown in which the first pivot axis L1, the second pivot axis L2, the third pivot axis L3, and the fourth pivot axis L4 are formed along the vertical direction, but the direction of each pivot axis is not particularly limited. For example, each pivot axis may be formed along the front-to-back direction. In this case, the mirrors in the deployed state, which protrude horizontally to the left and right, may be switched to the retracted state by rotating downward around the pivot axis.

[0063] Furthermore, although an example was shown in which the third rotation axis L3 and the fourth rotation axis L4 are located on opposite sides of the reference line S, the third rotation axis L3 and the fourth rotation axis L4 may be positioned at any location as long as the configuration in which the operation of the first mirror 130 is transmitted to the second mirror 140 by the connecting member 101 is maintained. For example, both the third rotation axis L3 and the fourth rotation axis L4 may be located in front of or behind the reference line. In this case, the first mirror and the second mirror will rotate in the same direction during operation.

[0064] Furthermore, while a boom sprayer was given as an example of a ride-on tilling machine, ride-on tilling machines are not limited to boom sprayers. For example, a ride-on tilling machine could also be a speed sprayer. [Explanation of Symbols]

[0065] 1... Boom sprayer (ride-on tiller), 4... Cabin, 20... Side floor, 100... Mirror device, 101... Connecting member, 130... First mirror, 132... First mirror bracket, 140... Second mirror, 142... Second mirror bracket, L1... First pivot axis, L2... Second pivot axis.

Claims

1. A mirror device that is fixed to a vehicle, A first mirror (130) having a first mirror bracket (132) that is rotatably mounted around a first pivot axis (L1), A second mirror (140) having a second mirror bracket (142) that is rotatably mounted around a second pivot axis (L2) which is provided parallel to the first pivot axis (L1), A mirror device comprising: a connecting member (101) connected between the first mirror (130) and the second mirror (140), such that the rotational movement of either the first mirror (130) or the second mirror (140) is transmitted to the rotational movement of the other of the first mirror (130) or the second mirror (140), so that the other of the first mirror (130) or the second mirror (140) rotates in conjunction with the rotation of either the first mirror (130) or the second mirror (140).

2. The connecting member (101) has a rod shape with a first end (101a) and a second end (101b) on the opposite side of the first end (101a). The first end (101a) is rotatably mounted on a third pivot axis (L3) located at a position spaced apart from the first pivot axis (L1) in the first mirror (130), The mirror device according to claim 1, wherein the second end (101b) is rotatably provided about a fourth pivot axis (L4) located at a position spaced apart from the second pivot axis (L2) in the second mirror (140).

3. The mirror device according to claim 2, wherein, when viewed from the axial direction of the first rotation axis (L1) and the second rotation axis (L2), the straight line connecting the first rotation axis (L1) and the second rotation axis (L2) is defined as the reference line (S), the third rotation axis (L3) and the fourth rotation axis (L4) are located on opposite sides of the reference line (S).

4. The present invention further includes a first fixing bracket (110) on which the first pivot axis (L1) is provided, The first fixing bracket (110) is A first contact portion (112b) that contacts the first mirror bracket (132) and restricts the rotation of the first mirror (130) in the first direction with respect to the first pivot axis (L1), A mirror device according to any one of claims 1 to 3, comprising: a second contact portion (112c) that contacts the first mirror bracket (132) to restrict the rotation of the first mirror (130) in a second direction opposite to the first direction, with the first pivot axis (L1) as the pivot center.

5. The present invention further includes an elastic member (119) connecting the first fixing bracket (110) and the first mirror bracket (132), The mirror device according to claim 4, wherein the elastic member (119) biases the first mirror (130) toward the first direction so as to maintain the first state when the first contact portion (112b) is in contact with the first mirror bracket (132), and biases the first mirror (130) toward the second direction so as to maintain the second state when the second contact portion (112c) is in contact with the first mirror bracket (132).

6. A vehicle body (2) having a cabin (4) and a side floor (20) provided on at least one of the left and right sides of the cabin (4), A ride-on management machine comprising a mirror device according to claim 1, provided on the upper part of the front surface (4a) of the cabin (4).

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