Amphibious Mobility Device

Abstract

To provide an amphibious mobile device in a simple composition capable of suppressing excessive load due to resistance force of water and capable of water surface movement even in a place of shallow depth.SOLUTION: An amphibious mobile device 100 including a body unit 110, a gripping unit 140 connected to the body unit 110, two tabular slide units 120 provided in parallel to the body unit 110, and drive wheels 135 have: the two slide units 120 composed to be capable of advancing and receding relatively to the body unit 110; propulsion plates 122 connected to be capable of rotating to the sliding units 120 by a plate rotational axis 124 orthogonal to advancing and receding direction of the slide units 120 on bottom surface of the two slide units 120; and the drive wheels 135 are connected to a driving force transmission unit 130 for converting advancing and receding movement of the slide units 120 to driving force for the drive wheels 135.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an amphibious transportation device that generates propulsive force by human power. [Background technology]

[0002] Conventionally, as a transportation device that generates propulsion force by human power, a transportation device (small boat 10) having a main body (hull 11), a grip part (handle 15) connected to the main body (hull 11), a rotary pedal 13, and a paddle 20 connected to the rotary pedal has been known, for example from Patent Document 1.

[0003] The moving device (small boat 10) disclosed in Patent Document 1 operates in such a way that when the user places his / her foot on the pedal portion 13a of the rotary pedal 13 and rows the boat, the paddle 20 swings in the forward and backward directions of the main body (hull 11) in conjunction with the rotation of the pedal portion 13, paddling the water, generating propulsive force and allowing the boat to move forward. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2017-193293 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, there is still room for improvement in the moving device known from Patent Document 1. In other words, in the moving device known from Patent Document 1, a paddle is rotatably connected to a rotating shaft located on the upper side of the hull, and propulsion is generated by paddling through the water with a paddle board attached to the lower end of the paddle. Therefore, the distance between the rotating shaft and the paddle board is large, and if the rotary pedal is pressed too hard, the resistance force when paddling is concentrated at the lower end of the paddle, causing the paddle to bend or break, so the device needs to be made sturdy.

[0006] Furthermore, in order to increase the propulsive force produced by the paddle, a larger paddle was required on the lower side of the hull, which meant that there was a risk that the paddle would get caught on the bottom in shallow water. Furthermore, if wheels are provided to enable movement on land in addition to movement on water, if the paddles are made larger, the lower part of the wheels will need to be positioned lower than the paddles, which could make movement on water in shallower water areas even more difficult.

[0007] The present invention aims to solve these problems and to provide an amphibious transportation device that has a simple configuration, can suppress overload caused by water resistance, and is capable of moving on water even in shallow water. [Means for solving the problem]

[0008] The amphibious mobility device of the present invention is an amphibious mobility device having a main body section, a holding section connected to the main body section, two plate-shaped slide sections arranged in parallel on the main body section, and a drive wheel, wherein the two slide sections are configured to be able to move back and forth relative to the main body section, and a propulsion plate is provided on the underside of the two slide sections and rotatably connected to the slide sections by a plate rotation axis perpendicular to the direction of the forward and backward movement of the slide sections, and the drive wheel is connected to a drive force transmission unit that converts the forward and backward movement of the slide sections into drive force for the drive wheel, thereby solving the above problem. Effect of the Invention

[0009] In the amphibious mobility device of claim 1, a propulsion plate is connected to the underside of the sliding section via a plate rotation axis, and the drive wheels are connected to the sliding section via a drive force transmission unit. Therefore, by simply performing the common operation of moving the sliding section back and forth, a user can move on water by paddling with the propulsion plate, and on land by rotating the drive wheels. In addition, since the propulsion plate is rotatably connected to the sliding section by the plate rotation axis perpendicular to the forward and backward movement direction of the sliding section, the distance between the plate rotation axis and the propulsion plate is short, and deformation or damage to the propulsion plate due to the resistance force when paddling through water can be sufficiently suppressed. Furthermore, since multiple propulsion plates can be provided on the underside of the slide portion, sufficient propulsion force can be obtained with a propulsion plate large enough to allow movement on the water even in shallow water. Furthermore, since the propulsion plate does not extend too far below the main body, even if the lower part of the drive wheel is positioned below the propulsion plate, the drive wheel can move above the water without touching the bottom, even in shallow water.

[0010] According to the configuration described in claim 2, the two slide parts are linked so that their forward and backward movement is always in the opposite direction. Therefore, for example, when moving the two slide parts with the feet, the user can easily move the slide parts forward and backward by simply moving their feet alternately forward and backward to operate the propulsion plate or drive wheel and obtain thrust on water or on land. According to the configuration described in claim 3, the propulsion plate is configured to be rotatable only within a range on the backward direction side from the position hanging down from the plate rotation axis of the slide section. Therefore, when the slide section is moved in the forward direction, the propulsion plate rotates around the plate rotation axis due to the resistance force of the water and moves toward the slide section. This makes it possible to minimize the resistance force from the water, reliably prevent movement in the backward direction, and reduce the burden on the user when moving the sliding portion in the forward direction. When the slide portion is moved backward, the propulsion plate rotates about the plate rotation shaft due to the resistance of the water, and paddles the water at a position hanging down from the plate rotation shaft. This allows the propulsion plate to paddle more water, and propulsion force can be generated efficiently.

[0011] According to the configuration described in claim 4, the grip portion is connected to the main body portion by the through-connection member so as to be rotatable relative to the main body portion, and the non-driven wheel is connected to the lower side of the main body portion of the through-connection member. Therefore, by rotating the grip portion, a user can rotate the orientation of the non-driven wheel around the through-connection member as the center of rotation, making it easy to change the direction of the amphibious mobility device on land. According to the configuration described in claim 5, the grip portion is connected to the main body portion by the through-connection member so as to be rotatable relative to the main body portion, and a direction-changing plate is connected to the through-connection member below the main body portion. Therefore, by rotating the grip portion, a user can rotate the orientation of the direction-changing plate around the through-connection member as the center of rotation, thereby making it easy to change the direction of the amphibious mobility device on water.

[0012] According to the configuration described in claim 6, a rack gear that continues in the advancing and retreating direction of the sliding part is provided on the underside of the sliding part, and the driving force transmission unit has a driving gear that meshes with the rack gear and can rotate in a direction perpendicular to the advancing and retreating direction of the sliding part, and a driving force transmission belt that is passed around a driven gear provided on the drive wheel, and the driving gear transmits the rotational force that it receives when the sliding part moves in the advancing direction to the driven gear via the driving force transmission belt as driving force for the drive wheel, so that the movement of the sliding part can be efficiently and reliably used as propulsion force for the amphibious mobile device on land. According to the configuration described in claim 7, the drive gear or driven gear has a ratchet mechanism that prevents the transmission of the rotational force received when the sliding part moves in the backward direction, so that only the drive force for moving the amphibious transportation device in the forward direction can be transmitted to the drive wheel.

[0013] According to the configuration described in claim 8, the main body is provided with a brake mechanism arranged to be slidable in the vertical direction relative to the main body, so that the brake mechanism can be advanced below the main body and abutted against the ground, thereby functioning as a brake to slow down the amphibious transportation device. Furthermore, by advancing the brake mechanism further downward to disengage the drive wheels from the ground, the amphibious transportation device can be stably maintained in a stopped state. According to the configuration described in claim 9, the main body has auxiliary wheels that are configured to be able to move forward and backward in the vertical direction relative to the main body in conjunction with the up and down movement of the brake mechanism. Therefore, for example, if the auxiliary wheels are configured to advance downward in conjunction with the brake mechanism when it is retracted upward, then by advancing the auxiliary wheels downward and releasing the drive wheels from the ground, the amphibious transportation device can be moved forward and backward freely using the non-drive wheels and auxiliary wheels without the need to operate the slide section.

[0014] According to the configuration described in claim 10, the main body has an emergency stop mechanism that fixes the positions of the two slide parts when the interlocking of the two slide parts with respect to their forward and backward movement is released. Therefore, even if the interlocking of the slide parts is released due to a malfunction or the like and control of the amphibious transportation device becomes unstable, the position of the slide parts is fixed, making it easier for the user to balance on the slide parts and allowing them to safely separate from the amphibious transportation device. According to the configuration described in claim 11, the drive wheel is connected to the slide portion via a drive force transmission unit, so that the user can rotate the drive wheel and move by simply moving the slide portion back and forth. In addition, the two slide sections are linked so that their forward and backward movement is always in the opposite direction. For example, when moving the two slide sections with the feet, the user can easily move the slide sections forward and backward by simply moving their feet forward and backward alternately, thereby operating the drive wheels and generating thrust on the ground. Furthermore, a rack gear that continues in the advancement / retraction direction of the sliding part is provided on the underside of the sliding part, and the driving force transmission unit has a driving gear that meshes with the rack gear and can rotate in a direction perpendicular to the advancement / retraction direction of the sliding part, and a driving force transmission belt that is wrapped around a driven gear provided on the driving wheel, and the driving gear transmits the rotational force that it receives when the sliding part moves in the advancement direction to the driven gear via the driving force transmission belt as driving force for the drive wheel, so that the movement of the sliding part can be efficiently and reliably used as propulsion force on the ground. In addition, the drive gear or driven gear has a ratchet mechanism that prevents the transmission of the rotational force received when the sliding portion moves in the backward direction, so that only the drive force for moving the land moving device in the forward direction can be transmitted to the drive wheel.

[0015] According to the configuration described in claim 12, the propulsion plate is connected to the underside of the sliding part via the plate rotation axis, so that the user can move on the water by paddling with the propulsion plate simply by moving the sliding part back and forth. In addition, since the propulsion plate is rotatably connected to the sliding section by the plate rotation axis perpendicular to the forward and backward movement direction of the sliding section, the distance between the plate rotation axis and the propulsion plate is short, and deformation or damage to the propulsion plate due to the resistance force when paddling through water can be sufficiently suppressed. Furthermore, since multiple propulsion plates can be provided on the underside of the slide portion, sufficient propulsion force can be obtained with a propulsion plate large enough to allow movement on the water even in shallow water. In addition, since the propulsion plate does not extend too far below the main body, the propulsion plate can move above the water without touching the bottom even in shallow water. Furthermore, the two slide sections are linked so that their forward and backward movement is always in the opposite direction. For example, when moving the two slide sections with the feet, the user can easily move the slide sections forward and backward by simply moving their feet forward and backward alternately, thereby operating the propulsion plate and generating thrust on the water. In addition, since the propulsion plate is configured to be rotatable only within a range on the backward direction side from the position hanging down from the plate rotation axis of the slide section, when the slide section is moved in the forward direction, the propulsion plate rotates around the plate rotation axis due to the resistance force of the water and moves toward the slide section. This makes it possible to minimize the resistance force from the water, reliably prevent movement in the backward direction, and reduce the burden on the user when moving the sliding portion in the forward direction. When the slide portion is moved backward, the propulsion plate rotates about the plate rotation shaft due to the resistance of the water, and paddles the water at a position hanging down from the plate rotation shaft. This allows the propulsion plate to paddle more water, and propulsion force can be generated efficiently. [Brief description of the drawings]

[0016] [Figure 1] 1 is a front view of an amphibious mobility device 100 according to one embodiment of the present invention. [Diagram 2] 1 is a side view of an amphibious mobility device 100 according to one embodiment of the present invention. [Diagram 3] 1 is a top view of an amphibious mobility device 100 in accordance with one embodiment of the present invention. [Figure 4] 1 is a schematic cross-sectional side view of an amphibious transportation device 100 according to one embodiment of the present invention; [Diagram 5] 1 is an enlarged view of part A of an amphibious transportation device 100 according to one embodiment of the present invention. [Figure 6] 1 is a bottom view of an amphibious mobility device 100 in accordance with one embodiment of the present invention. [Figure 7] 1 is a bottom view showing the operation of a sliding portion 120 of an amphibious movement device 100 according to one embodiment of the present invention. FIG. [Figure 8] 1 is a bottom view of an amphibious transportation device 100 according to one embodiment of the present invention, showing the operation of non-driven wheels 141 and steering plate 142. [Figure 9] 1 is an enlarged view of part C of an amphibious movement device 100 according to one embodiment of the present invention, showing the operation of the propulsion plate 122. FIG. [Figure 10] 1 is an enlarged view of part B showing operation 1 of the stopper 151 of the amphibious transportation device 100 according to one embodiment of the present invention. [Figure 11] 13 is an enlarged view of part B showing operation 2 of the stopper 151 of the amphibious transportation device 100 according to one embodiment of the present invention. FIG. [Figure 12] 1 is an enlarged view of part B showing operation 1 of the deceleration plate 159 of the amphibious transportation device 100 according to one embodiment of the present invention. [Figure 13] 1 is an enlarged view of part D showing operation 1 of the deceleration plate 159 of the amphibious transportation device 100 according to one embodiment of the present invention. [Figure 14]13 is an enlarged view of part D showing operation 2 of the deceleration plate 159 of the amphibious transportation device 100 according to one embodiment of the present invention. FIG. [Figure 15] FIG. 13 is an enlarged view showing the structure around an operating lever 270 of an amphibious movement device 200 according to another embodiment of the present invention. [Figure 16] FIG. 2 is an enlarged view showing the structure around a drive wheel 235 of an amphibious transportation device 200 according to another embodiment of the present invention. [Figure 17] 2 is a bottom view showing the structure around a drive wheel 235 of an amphibious transportation device 200 according to another embodiment of the present invention. FIG. [Figure 18] FIG. 13 is an enlarged view showing the state around the operating lever 270 when the operating arm 271 is pressed down in the amphibious transportation device 200 according to another embodiment of the present invention. [Figure 19] FIG. 13 is an enlarged view showing the state around the drive wheel 235 when the operating arm 271 is pushed down in an amphibious transportation device 200 according to another embodiment of the present invention. [Figure 20] FIG. 13 is an enlarged view showing the state around the operating lever 270 when the operating arm 271 is raised in an amphibious transportation device 200 according to another embodiment of the present invention. [Figure 21] FIG. 13 is an enlarged view showing the state around the drive wheel 235 when the operating arm 271 is raised in an amphibious transportation device 200 according to another embodiment of the present invention. [Figure 22] FIG. 13 is a bottom view showing the state around the drive wheel 235 when the operating arm 271 is raised in an amphibious transportation device 200 according to another embodiment of the present invention. [Figure 23] FIG. 13 is an enlarged view showing the state around the operating lever 270 when the saddle 250 is reclined in an amphibious transportation device 200 according to another embodiment of the present invention. [Figure 24] FIG. 2 is an enlarged view showing the state around the drive wheel 235 when the saddle 250 is reclined in an amphibious transportation device 200 according to another embodiment of the present invention. [Diagram 25] 2 is a bottom view of an amphibious mobility device 200 according to another embodiment of the present invention. FIG. [Figure 26] FIG. 13 is an enlarged view showing the structure around an emergency stop mechanism 290 of an amphibious movement device 200 according to another embodiment of the present invention. [Figure 27] FIG. 13 is an enlarged view showing the positional relationship of an amphibious transportation device 200 according to another embodiment of the present invention before the emergency stop mechanism 290 is activated. [Figure 28] FIG. 13 is an enlarged view showing the positional relationship of an amphibious movement device 200 according to another embodiment of the present invention after an emergency stop mechanism 290 has been activated. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] An amphibious transportation device 100 according to one embodiment of the present invention will now be described with reference to FIGS. For ease of explanation, parts of the amphibious vehicle 100 are not shown in FIGS.

[0018] As shown in Figures 1 to 9, an amphibious transportation device 100 according to one embodiment of the present invention has a main body portion 110, a gripping portion 140 connected to the main body portion 110 via a through-connecting member 143, two plate-shaped slide portions 120 (right slide portion 120a, left slide portion 120b) arranged in parallel on the main body portion 110, a pair of left and right drive wheels 135, and a non-drive wheel 141.

[0019] The main body 110 has a front cover 111 provided in front of the gripping portion 140 and a rear cover 112 provided rearward of the gripping portion 140, and the front cover 111 and the rear cover 112 are spaced apart so that the upper surface of the sliding portion 120 is sufficiently exposed. Furthermore, between the front cover 111 and the rear cover 112 on the upper side of the main body 110, there is provided a brake mechanism consisting of a saddle 150 that can be tilted around a saddle tilting axis 153 as the center of rotation, a handle 152 for tilting the saddle 150, and a pair of left and right stoppers 151 and a stopper operating unit 155.

[0020] On the underside of the main body 110, there are provided a non-driven wheel 141 connected to a through-connection member 143, a direction-changing plate 142 connected to the non-driven wheel 141 by a rotation transmission wire 145, a driving force transmission unit 130 that transmits driving force to a pair of driving wheels 135, a slide lock member 147 described later that is configured to be attachable and detachable to a rack gear 121 provided on the underside of the slide portion 120, and a deceleration plate 159 arranged so that the holding connection surface 163 and the deceleration resistance surface 164 are approximately parallel to the underside of the slide portion 120.

[0021] The slide portion 120 has a right slide portion 120a and a left slide portion 120b, and is arranged so as to be movable forward and backward, and the right slide portion 120a and the left slide portion 120b are connected via a slide interlocking wire 123 so that their advancement and retreat are interlocked in opposite directions. Cushion members 158 are disposed at the front and rear of the sliding portion 120, which come into contact with the front and rear portions of the sliding portion 120 when the sliding portion 120 moves forward and backward.

[0022] On the underside of the sliding portion 120 (right sliding portion 120a, left sliding portion 120b), there are provided rack gears 121 (right rack gear 121a, left rack gear 121b) extending in the front-to-rear direction, and a propulsion plate 122 (right propulsion plate 122a, left propulsion plate 122b) rotatably connected by a plate rotation shaft 124, and the rack gears 121 (right rack gear 121a, left rack gear 121b) are configured to mesh with the right driving gear 131a and left driving gear 131b of the driving gear 131 (right driving gear 131a, left driving gear 131b, driving side transmission gear 131c). The propulsion plates 122 (right propulsion plate 122a, left propulsion plate 122b) are provided in multiple numbers on the underside of each slide portion 120 (right slide portion 120a, left slide portion 120b) and are formed in a plate shape extending in the direction of the plate rotation shaft 124, with one end connected to the plate rotation shaft 124 being thick and becoming thinner toward the other end.The propulsion plates 122 have a flat portion 122f, a web portion 122s, a curved portion 122r connecting one end of the flat portion 122f to one end of the web portion 122s, and a sloped portion 122t connecting the other end of the flat portion 122f to the other end of the web portion 122s, and the flat portion 122f is configured to be able to abut against the underside of the slide portion 120 by rotating the propulsion plate 122 about the plate rotation shaft 124 as the rotation center.

[0023] The slide lock member 147 is configured to be movable up and down so as to mesh with the rack gear 121, and its vertical movement can be controlled by a slide lock lever 144 provided near the grip portion 140 via a slide lock wire 146.

[0024] The driving force transmission unit 130 has a driving gear 131 composed of a right driving gear 131a and a left driving gear 131b which mesh with the rack gear 121 (right rack gear 121a, left rack gear 121b) and rotate about a driving shaft 136 as a rotation axis, and a driving side transmission gear 131c to which driving force is transmitted from the right driving gear 131a and the left driving gear 131b via the driving shaft 136, a driven side transmission gear 132 connected to a driven shaft 134 which is the rotation axis of the driving wheel 135, and a driving force transmission belt 133 which is stretched between the driving side transmission gear 131c and the driven side transmission gear 132 and transmits the driving force from the driving side transmission gear 131c to the driven side transmission gear 132. The right drive gear 131a and the left drive gear 131b are connected to the drive shaft 136 via ratchets (not shown) built into the right drive gear 131a and the left drive gear 131b, respectively, and are configured to transmit to the drive shaft 136 only the drive force transmitted by meshing with the rack gear 121 when the slide portion 120 moves toward the front cover side, as shown in FIG. 5.

[0025] The pair of left and right stoppers 151 are arranged so as to be slidable in the vertical direction relative to the main body portion 110, and a stopper operating portion 155 is provided on the upper portion of the stoppers 151 to connect the pair of left and right stoppers 151 on the upper surface side of the main body portion 110. An elastic member 154 is provided to cover the outer peripheral surface of the stoppers 151 between the stopper operating portion 155 and the upper surface of the main body portion 110. The pair of left and right stoppers 151 are connected to a pair of left and right interlocking rods 160 on the lower surface side of the main body 110, respectively.

[0026] The stopper operating portion 155 has a locking portion 156 extending rearward, and the locking portion 156 is configured to be able to engage with a locked portion 157 extending from the upper surface of the main body portion 110 behind the stopper operating portion 155 . One end of the deceleration plate 159 is connected to the main body 110 so as to be rotatable about a deceleration plate rotation shaft 162 extending in the left-right direction relative to the main body 110, and the other end is connected to the underside of the main body 110 via a retaining spring 161.

[0027] Next, a method of moving and stopping on land and water using amphibious mobile device 100 according to one embodiment of the present invention will be described with reference to FIGS. It should be noted that the amphibious transportation device 100 according to one embodiment of the present invention floats on water with the upper surface of the sliding section 120 exposed above the water.

[0028] First, the method of moving and stopping on the ground will be described. A user gets on the amphibious transportation device 100, holds the grip portion 140, and places his / her right foot on the right sliding portion 120a and his / her left foot on the left sliding portion 120b. Next, when the user moves his / her left foot as if walking while holding the grip portion 140, and kicks and moves the left sliding portion 120b toward the rear cover 112 with the left foot, the right sliding portion 120a, which is connected to the left sliding portion 120b via the slide interlocking wire 123, moves toward the front cover 111. At this time, the right drive gear 131a meshing with the right rack gear 121a rotates forward (counterclockwise when viewed from the front in FIG. 5) and transmits a forward rotational driving force to the drive side transmission gear 131c via the drive shaft 136.

[0029] In addition, since the slide portion 120 has a ratchet (not shown) that transmits only the driving force transmitted by meshing with the rack gear 121 when it moves toward the front cover 111 side to the drive shaft 136, when the left slide portion 120b moves toward the rear cover 112 side, the left drive gear 131b that meshes with the left rack gear 121b rotates in the reverse direction (rotates clockwise when viewed from the front in Figure 5), but the reverse driving force is not transmitted to the drive shaft 136.

[0030] Furthermore, the forward rotation driving force is transmitted from the driving side transmission gear 131c to the driven side transmission gear 132 via the driving force transmission belt 133, allowing the driven shaft 134 and driving wheel 135 to rotate in the forward direction, and the amphibious transportation device 100 to move forward.

[0031] Next, the user moves his / her right foot as if walking while holding the grip portion 140, and kicks and moves the right sliding portion 120a toward the rear cover 112 with the right foot, causing the left sliding portion 120b, which is connected to the right sliding portion 120a via the slide interlocking wire 123, to move toward the front cover 111. As a result, a driving force of forward rotation is transmitted from the left driving gear 131b meshing with the left rack gear 121b via the driving shaft 136 to the driving side transmission gear 131c. Furthermore, even if the right sliding portion 120a moves toward the rear cover 112, the ratchet (not shown) provided on the right drive gear 131a prevents the reverse rotation driving force of the right drive gear 131a from being transmitted from the drive shaft 136 to the drive wheel 135 via the driven shaft 134, so that the amphibious vehicle 100 can move forward.

[0032] In this way, the user can easily move the amphibious transportation device 100 forward on land by simply holding the grip portion 140 and alternately moving both feet as if walking on the sliding portion 120. In addition, since the non-driven wheel 141 is connected to the grip portion 140 by the through-connecting member 143, the direction of the non-driven wheel 141 can also be changed by rotating the grip portion 140 around the through-connecting member 143 as the center of rotation, thereby making it possible, for example, to change the direction of travel of the forward-moving amphibious vehicle 100, thereby making it possible to turn around a curve, etc. Furthermore, cushion members 158 are provided in front and behind each slide portion 120, so that shock to the feet and main body portion 110 when the slide portion 120 is kicked hard to move it can be absorbed.

[0033] In addition, a slide lock member 147 that can move up and down is provided on the underside of the main body 110 so as to engage with the rack gear 121, and the up and down movement of the slide lock member 147 can be controlled by a slide lock lever 144 provided near the grip portion 140. Therefore, for example, when there is no need to operate the slide portion 120 when moving forward, such as when moving downhill, the position of the slide portion 120 can be fixed by operating the slide lock lever 144 to push up the slide lock connecting arm 147c and engage the slide lock member 147 with the rack gear 121, and the user can easily maintain a stable posture on the slide portion 120.

[0034] When it is desired to stop the moving amphibious transportation device 100, the handle 152 is lifted to rotate the saddle 150 around the saddle tilt axis 153, and the stopper operating part 155 is pressed at the contact pressing point P1 to press down the stopper 151 and activate the brake mechanism. When the stopper 151 is pressed down by a predetermined amount, the lower end of the stopper 151 reaches the ground and functions as a brake, and the contact between the drive wheel 135 and the ground can be released. This can slow or stop the forward movement of amphibious transportation device 100 on land.

[0035] Furthermore, if the engageable position between the locked portion 157 and the locking portion 156 is set to a height at which the lower end of the stopper 151 reaches the ground, then when the stopper 151 is pushed down, the locking portion 156 of the stopper operating portion 155 can be engaged with the locked portion 157, thereby maintaining the stopper operating portion 155 pressed down at the contact depression point P1 without the need to continue to press down the stopper 151 by operating the handle 152, and the stopped state of the amphibious transportation device 100 can be maintained without the user having to continue to operate it. Furthermore, by having the user walk on the sliding portion 120 while continuing to press down the stopper 151, the amphibious transportation device 100 will not move and can also be used as a treadmill. When the engagement between the engaged portion 157 and the engaging portion 156 is released, the repulsive force of the elastic member 154 causes the stopper 151 and the stopper operating portion 155 to rise, and the lower end of the stopper 151 separates from the ground, allowing the amphibious transportation device 100 to start moving again.

[0036] Next, we will explain how to move and stop on water. A user gets on the amphibious transportation device 100, holds the grip portion 140, and places his / her right foot on the right sliding portion 120a and his / her left foot on the left sliding portion 120b. Next, when the user moves his / her left foot as if walking while holding the grip portion 140, and kicks and moves the left sliding portion 120b toward the rear cover 112 with the left foot, the right sliding portion 120a, which is connected to the left sliding portion 120b via the slide interlocking wire 123, moves toward the front cover 111. At this time, the left propulsion plate 122b provided on the underside of the left sliding portion 120b rotates (forward rotation) so that the flat portion 122f abuts against the underside of the left sliding portion 120b due to the resistance of the water at the paddle surface 122s, and the paddle surface 122s stops its rotational movement in a direction approximately perpendicular to the underside of the left sliding portion 120b.

[0037] In this state, the left sliding portion 120b moves towards the rear cover 112, so that the paddle surface 122s can paddle the water sufficiently to generate propulsive force, causing the amphibious transportation device 100 to move forward. Meanwhile, the right propulsion plate 122a provided on the underside of the right sliding portion 120a rotates (reverse rotates) in a direction in which the flat portion 122f separates from the underside of the right sliding portion 120a due to the resistance of the water at the inclined portion 122t, and moves toward the front cover 111 with the web portion 122s approaching the underside of the right sliding portion 120a.

[0038] This puts the inclined portion 122t in a position where it does not encounter much resistance from the water, so that even if the right sliding portion 120a moves toward the front cover 111, the right propulsion plate 122a does not paddle the water, no force is generated that hinders the forward movement of the amphibious transportation device 100, and the burden on the user when moving the right sliding portion 120a in the forward direction is reduced. Since the left sliding portion 120b moves toward the rear cover 112 and the right sliding portion 120a moves toward the front cover 111 simultaneously, the amphibious transportation device 100 can move forward using the propulsive force generated by paddling through the water with the paddle surface 122s.

[0039] Next, the user moves his / her right foot as if walking while holding the grip portion 140, and kicks and moves the right sliding portion 120a toward the rear cover 112 with the right foot, causing the left sliding portion 120b, which is connected to the right sliding portion 120a via the slide interlocking wire 123, to move toward the front cover 111. As a result, the right propulsion plate 122a gradually rotates forward due to the resistance of the water between the underside of the right sliding portion 120a and the paddle surface 122s, and eventually the paddle surface 122s stops rotating in a direction approximately perpendicular to the underside of the right sliding portion 120a. In addition, since the left sliding portion 120b has moved toward the front cover 111, the left propulsion plate 122b rotates in the reverse direction, bringing the webbed surface 122s closer to the underside of the left sliding portion 120b and causing the inclined portion 122t to assume a position in which it does not experience much resistance from the water.

[0040] In this way, the amphibious transportation device 100 can move forward even with the propulsive force generated by paddling through the water using the right propulsion plate 122a, and the user can easily move the amphibious transportation device 100 continuously forward by simply holding the gripping portion 140 and moving both feet alternately as if walking on the sliding portion 120. In addition, since the direction-changing plate 142 is connected to the through-connection member 143 by a rotation transmission wire 145, the direction-changing plate 142 can also be changed in direction by rotating the gripping portion 140 around the through-connection member 143 as the center of rotation, thereby functioning as a rudder that changes the direction of travel of the amphibious mobility device 100 as it moves forward.

[0041] When it is desired to stop the moving amphibious transportation device 100, the handle 152 is lifted to rotate the saddle 150 around the saddle tilt axis 153, and the stopper operating portion 155 is pressed at the contact pressing point P1 to press down the stopper 151. When the stopper 151 is pressed down by a predetermined amount, a pair of left and right interlocking rods 160 connected to the pair of left and right stoppers 151, respectively, press down the deceleration plate 159 at a contact pressing point P2. As a result, the deceleration plate 159 begins to rotate around the deceleration plate rotation axis 162, and eventually the deceleration plate 159 moves the deceleration resistance surface 164 to a position approximately perpendicular to the underside of the slide section 120, allowing the deceleration resistance surface 164 to receive a large amount of water resistance and function as a brake for the amphibious transportation device 100 on the water. This allows the forward movement of amphibious transportation device 100 on the water to be slowed or stopped.

[0042] In addition, since the deceleration plate 159 is connected between the holding connection surface 163 and the main body portion 110 by the holding spring 161, when the stopper 151 and the stopper operating portion 155 are raised, the interlocking rod 160 also rises and the pressure on the deceleration plate 159 is released, so that the deceleration plate 159 is pulled by the holding spring 161 and automatically oriented approximately parallel to the underside of the slide portion 120, thereby releasing its function as a brake.

[0043] As described above, the amphibious transportation device 100 of one embodiment of the present invention can easily move forward by rotating the drive wheels 135 on land and by paddling the water with the propulsion plate 122 on water, with the user simply performing the common simple operation of moving the slide section 120 forward and backward. Movement from land to water and from water to land can also be achieved without changing the operation. In addition, since the propulsion plate 122 is rotatably connected to the sliding portion 120 by the plate rotation axis 124 perpendicular to the forward and backward movement direction of the sliding portion 120, the distance between the plate rotation axis 124 and the propulsion plate 122 is short, and deformation or damage to the propulsion plate 122 due to the resistance force when paddling through water can be sufficiently suppressed. Furthermore, since a plurality of propulsion plates 122 are provided on the underside of the slide portion 120, sufficient propulsion force can be obtained with the propulsion plates 122 that are large enough to allow movement on the water even in shallow water. In addition, since the propulsion plate 122 does not advance too far below the main body 110, the drive wheels 135 and non-drive wheels 141 can be made small, so that the drive wheels 135 can move on the water without touching the bottom even in shallow water.

[0044] Furthermore, if the drive wheels 135, non-drive wheels 141, stoppers 151, propulsion plate 122, direction change plate 142, and deceleration plate 159 are configured to be removable, for example, when the amphibious transportation device 100 is to be used only on water as a water transportation device, the weight of the amphibious transportation device 100 can be reduced by removing the drive wheels 135, non-drive wheels 141, and stoppers 151, and the resistance from water when moving on water can be reduced. Furthermore, for example, if amphibious transportation device 100 is to be used only on land as a land transportation device, the weight of amphibious transportation device 100 can be reduced by removing propulsion plate 122, direction changing plate 142, and deceleration plate 159, thereby reducing air resistance when moving on land.

[0045] An amphibious mobile device 200 according to another embodiment of the present invention will now be described with reference to FIGS. It should be noted that explanations of parts common to the amphibious mobile device 100 of one embodiment of the present invention will be omitted, and for the sake of explanation, only part of the device configuration is shown in Figures 15 to 28. 19, 21 and 24 do not show the restricting plate 287 on the front side of the drawings.

[0046] Another embodiment of an amphibious transportation device 200 of the present invention has a brake lever (not shown) on a grip portion (not shown), and the brake lever (not shown) is configured to be able to operate a brake pad (not shown) described later via a brake wire (not shown). Brake pads (not shown) are provided in a position where they can clamp non-driven wheel 241 and driven wheel 235, and by operating a brake lever (not shown), the brake pads (not shown) clamp non-driven wheel 241 and driven wheel 235, functioning as a brake that directly stops the rotation of non-driven wheel 241 and driven wheel 235 by frictional force.

[0047] In addition, an amphibious transportation device 200 according to another embodiment of the present invention is provided with an operating lever 270 rotatably connected to a lever tilting shaft 278 arranged so as to have a rotation axis coaxial with the rotation axis of the saddle tilting shaft 253, as shown in FIG. 15. The operating lever 270 has an operating arm 271 and an interlocking arm 272 , and is rotatably connected to a lever tilting shaft 278 in the vicinity of the connection between the operating arm 271 and the interlocking arm 272 . The operating arm 271 is provided with a release button 274 which will be described later. An interlocking hole 273 is provided in the interlocking arm 272, and a stopper interlocking pin 277 provided in the stopper operating portion 255 is arranged to be movable within the interlocking hole 273. By pulling the operating arm 271 upward, the interlocking arm 272 moves downward with the lever tilting axis 278 as the center of rotation. At this time, the stopper interlocking pin 277 arranged in the interlocking hole 273 also receives a force from the interlocking arm 272 to move downward, so that the stopper 251 moves downward together with the stopper operating part 255 connected to the stopper interlocking pin 277, and the brake mechanism is activated. When the operation of the operating arm 271 is released after the locking portion 256 and the locked portion 257 are moved to a predetermined position where they can engage with each other, the locking portion 256 and the non-locking portion 257 engage with each other, and the stopper 251 is maintained in its downward movement state.

[0048] The release button 274 is connected to the locked portion 257 via a release wire 275 passing through the wire insertion tube 276, and by operating the release button 274 and pulling the release wire 275, the locked portion 257 is bent, and the engagement between the locking portion 256 and the locked portion 257 is released, so that the stopper 251 can be easily returned to its initial position.

[0049] Furthermore, an amphibious transportation device 200 according to another embodiment of the present invention is provided with an auxiliary wheel 286 connected to a stopper 251 via a pair of auxiliary linkage pieces 280 arranged to sandwich the drive wheel 235, and an L-shaped restricting plate 287 arranged to sandwich the drive wheel 235 from the outside of the pair of auxiliary linkage pieces 280, as shown in Figures 16 and 17. The auxiliary interlocking piece 280 has a first auxiliary interlocking arm 281 and a second auxiliary interlocking arm 282, and is rotatably connected to the driven shaft 234 near the connection between the first auxiliary interlocking arm 281 and the second auxiliary interlocking arm 282. An auxiliary interlocking hole 283 is provided in the first auxiliary interlocking arm 281, and an auxiliary interlocking pin 284 provided in the stopper 251 is arranged to be movable within the auxiliary interlocking hole 283. As the stopper 251 moves up and down, the first auxiliary interlocking arm 281 is configured to be able to move up and down around the driven shaft 234 as the center of rotation.

[0050] An auxiliary rotating shaft 285 is provided at the end of the second auxiliary interlocking arm 282, and an auxiliary wheel 286 that is rotatable around the auxiliary rotating shaft 285 is provided. That is, the auxiliary wheel 286 is configured to be movable in the opposite direction to the ascending and descending direction of the stopper 251 via the auxiliary interlocking piece 280 in conjunction with the ascending and descending movement of the stopper 251 . In addition, the second auxiliary interlocking arm 282 has some elasticity, and a brake shoe 289 is provided on the surface of the second auxiliary interlocking arm 282 facing the drive wheel 235. The restricting plate 287 has a pressing protrusion 288 that protrudes to a position on the track of the second auxiliary interlocking arm 282 where it can interfere with the second auxiliary interlocking arm 282, and the tip of the pressing protrusion 288 is formed in a semispherical shape.

[0051] Next, the positional relationship between the stopper 251 and the auxiliary wheels 286 of an amphibious transportation device 200 according to another embodiment of the present invention will be described with reference to FIGS. First, as shown in Figures 15 to 17, when the drive wheels 235 are in contact with the ground, the amphibious transportation device 200 is capable of moving forward. From this state, when the operating arm 271 is pushed down, as shown in FIGS. 18 and 19, the stopper operating portion 255 moves upward together with the interlocking arm 272, and the stopper 251 also moves upward. The auxiliary wheel 286 moves downward in the opposite direction to the stopper 251 and touches the ground, and when the stopper 251 moves further upward, the auxiliary wheel 286 causes the drive wheel 235 to separate from the ground. Because the drive wheels 235 are only allowed to rotate in the forward direction of the amphibious transportation device 200, the amphibious transportation device 200 cannot be moved backwards when the drive wheels 235 are on the ground. However, by moving the auxiliary wheels 286 downward until the drive wheels 235 are not on the ground, for example, a user can get off the amphibious transportation device 200 and push the main body 210 with their hands, allowing the amphibious transportation device 200 to be easily moved back and forth freely while supported by the non-drive wheels 241 and the auxiliary wheels 286.

[0052] When the operating arm 271 is pulled up, as shown in Figures 20 to 22, the stopper operating part 255 moves downward together with the interlocking arm 272, and the stopper 251 also moves downward and touches the ground, slowing down or stopping the movement of the amphibious transportation device 200. The second auxiliary interlocking arm 282 moves upward in the opposite direction to the stopper 251 , and eventually comes into contact with the pressing protrusion 288 of the regulating plate 287 . Since the tip of the pressing projection 288 is formed in a semi-spherical shape, the second auxiliary interlocking arm 282, which has some elasticity, moves further upward along the pressing projection 288 while deforming toward the drive wheel 235 side. At this time, the brake shoe 289 provided on the second auxiliary interlocking arm 282 is pressed against the drive wheel 235, thereby applying the brakes to the drive wheel 235, and the rotation of the drive wheel 235 is decelerated and stopped.

[0053] In addition, the auxiliary wheels 286 move upward in the opposite direction to the stoppers 251, and when both the stoppers 251 and the drive wheels 235 are in contact with the ground, the auxiliary wheels 286 are off the ground. Moreover, by further raising the operating arm 271, not only the auxiliary wheels 286 but also the driving wheels 235 can be released from the ground as shown in FIG. At this time, since the second auxiliary interlocking arm 282 moves above the pressing protrusion 288, the second auxiliary interlocking arm 282 is released from the pressure from the pressing protrusion 288 and returns to its original shape. By pressing the release button 274 provided on the operating lever 270, not only the stopper 251 but also the auxiliary link piece 280 and the auxiliary wheel 286 can be easily returned to their initial positions.

[0054] As described above, the stopper and auxiliary wheels 286 can be operated without tilting the saddle 250 simply by operating the operating arm 271, so that the amphibious transportation device 200 can be easily moved forward and backward, decelerated, and stopped even while seated on the saddle 250. Incidentally, the positions of the stopper 251 and the auxiliary wheels 286 can also be adjusted by tilting the saddle 250 as shown in FIG.

[0055] Next, the emergency stop mechanism 290 of the amphibious vehicle 200 will be described with reference to FIGS. As shown in Figures 25 to 27, the emergency stop mechanism 290 has a fixed part 293 arranged near the slide lock connecting arm 247c near the center of the back surface of the main body 210, an emergency stop body 294 connected to the fixed part 293 via a pull spring 295, and an auxiliary pulley 291 connected to the emergency stop body 294 via a connecting wire 292.

[0056] The fixed portion 293 is fixed in position relative to the main body 210, and the emergency stop body 294 is configured to be movable along the extension and contraction direction of the pulling spring 295. The surface of the emergency stop body 294 facing the slide lock connecting arm 247c is provided with a first flat surface 296, a second flat surface 298 that bulges out toward the slide lock connecting arm 247c more than the first flat surface 296, and an inclined surface 297 connecting the first flat surface 296 and the second flat surface 298. The emergency stop body 294 is pulled from the auxiliary pulley 291 via the connecting wire 292, so that it moves toward the auxiliary pulley 291 while stretching the pulling spring 295, and maintains a position where the slide lock connecting arm 247c and the first flat surface 296 face each other.

[0057] The auxiliary pulley 291 is disposed so as to guide the slide interlocking wire 223 connected to the right sliding portion 220a and the left sliding portion 220b. As a result, under normal conditions, the slide interlocking wire 223 is tensioned by the right slide portion 220a and the left slide portion 220b, so that even if the pull spring 295 pulls the emergency stop body 294 toward the fixed portion 293, the auxiliary pulley 291 does not move toward the emergency stop body 294, and the emergency stop body 294 maintains a position where the slide lock connecting arm 247c and the first flat surface 296 face each other.

[0058] If a malfunction occurs such that the interlocking between the right sliding portion 220a and the left sliding portion 220b cannot be maintained, for example, if the slide interlocking wire 223 breaks and the tension in the slide interlocking wire 223 is released, the emergency stop body 294 is pulled together with the auxiliary pulley 291 toward the spring 295. As a result, the emergency stop body 294 gradually moves toward the fixed portion 293 while keeping the inclined surface 297 in contact with the slide lock connecting arm 247c, and maintains a position where the second flat surface 298 pushes up the slide lock connecting arm 247c as shown in FIG. The slide lock connecting arm 247c pushed up by the emergency stop body 294 engages the slide lock member 247 with the rack gear 221, thereby fixing the position of the slide section 220 and enabling the user to safely respond to malfunctions while maintaining a stable posture on the slide section 220.

[0059] Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various design modifications can be made without departing from the present invention described in the claims.

[0060] In the above-described embodiment, the propulsion plates are described as being provided in multiple numbers on the underside of each slide portion, but the configuration of the present invention is not limited to this. For example, the propulsion plates may be provided one by one on the underside of each slide portion. In addition, in the above-described embodiment, the propulsion plate has been described as having a flat portion that can abut against the underside of the slide portion, a web portion, a curved portion and an inclined portion, but the configuration of the propulsion plate is not limited to this, and for example, the propulsion plate may be formed in a flat plate shape of uniform thickness.

[0061] In addition, in the above-described embodiment, the main body portion is described as having a front cover and a rear cover, but the configuration of the main body portion is not limited to this, and for example, the front cover and rear cover may not be present. In addition, in the above-described embodiment, the right sliding portion and the left sliding portion are described as being connected by a slide interlocking wire, but the configuration of the sliding portions is not limited to this, and for example, the right sliding portion and the left sliding portion may be configured to be able to move forward and backward independently of each other.

[0062] In addition, in the above-described embodiment, a stopper and a stopper operating part are provided behind the saddle of the main body part, and the saddle is configured to be rotatable around the saddle tilting axis as the center of rotation, and the stopper is pressed at the pressing contact point. However, the configuration of the saddle and the stopper is not limited to this, and for example, there may be no saddle and there may be no stopper. In addition, in the above-described embodiment, the amphibious movement device has been described as floating on water with the upper surface of the sliding part exposed above the water, but the configuration of the amphibious movement device is not limited to this, and for example, the upper surface of the sliding part may be located slightly below the water surface.

[0063] In addition, in the above-described embodiment, it has been described that cushion members are provided in front and behind the sliding portion, but the configuration of the main body is not limited to this, and for example, the cushion member may be provided only on the front side of the sliding portion, or there may be no cushion member. In addition, in the above-described embodiment, the right drive gear and the left drive gear are each described as having a built-in ratchet, but the configuration of the drive gears is not limited to this, and for example, the ratchet may be provided separately from the drive gear.

[0064] In addition, in the above-described embodiment, the movement of the sliding portion is transmitted as a driving force by meshing the rack gear and the driving gear, but the method of transmitting the driving force is not limited to this. For example, a rubber tire may be used instead of the driving gear, and the rubber tire may be rotated by friction with the underside of the sliding portion, and the rotation may be transmitted as a driving force. In addition, in the above-described embodiment, the emergency stop body and the auxiliary pulley are described as being connected by a connecting wire, but the configuration of the emergency stop mechanism is not limited to this, and for example, the emergency stop body and the auxiliary pulley may be connected by a round bar. [Explanation of symbols]

[0065] 100, 200 ··· Amphibious mobility device 110, 210... Main body 111 Front cover 112, 212 Rear cover 120, 220 ... Slide section 120a, 220a... Right slide part 120b, 220b... Left slide part 121, 221 ... Rack gear 121a, 221a Right rack gear 121b, 221b... Left rack gear 122 Propulsion plate 122a Right propulsion plate 122b Left propulsion plate 122r...Curved surface part 122f... Flat part 122s ··· Webbed part 122t...Slope section 123, 223 ... Slide interlocking wire 124 Plate rotation axis 130 Drive force transmission unit 131 Drive gear 131a Right drive gear 131b Left drive gear 131c Drive side transmission gear 132, 232 Driven side transmission gear 133, 233 .... Driving force transmission belt 134, 234... Driven shaft 135, 235 ··· Drive wheels 136 Drive shaft 140 ··· Handle 141, 241 - Non-driving wheels 142, 242... Direction change plate 143 .... Through-connecting member 144 Slide lock lever 145 Rotation transmission wire 146, 246 ··· Slide lock wire 147, 247 ... slide lock member 147c, 247c... Slide lock connecting arm 150, 250 ··· Saddle 151, 251 ... Stopper 152, 252 ... Handle 153, 253 ··· Saddle tilt axis 154, 254 Elastic member 155, 255 ··· Stopper operation part 156, 256 ... Locking part 157, 257... Locked part 158, 258 ... Cushion member 159, 259... Reduction plate 160 ··· Interlocking rod 161, 261 ... Retaining spring 162 Reduction plate rotating shaft 163 Retaining connection surface 164 ... Deceleration resistance surface 270 ··· Operating lever 271 ··· Control arm 272 ··· Interlocking arms 273 ... interlocking hole 274 ··· Release button 275 Release wire 276 Wire insertion tube 277 ··· Stopper interlocking pin 278 Lever tilt axis 280 ... Auxiliary interlocking piece 281 First auxiliary link arm 282 Second auxiliary link arm 283 ... Auxiliary interlocking hole 284 Auxiliary interlocking pin 285 Auxiliary Rotary Shaft 286 Training wheels 287 Regulatory board 288 ··· Pressing protrusion 289 Brake shoe 290...Emergency stop mechanism 291 Auxiliary pulley 292 Connecting wire 293...Fixed part 294 ... emergency stop body 295 ··· Pull spring 296 ... 1st flat surface 297... Slope 298 ... second flat surface P1, P2: Contact pressing points

Claims

1. An amphibious transportation device having a main body, a gripping part connected to the main body, two plate-shaped slide parts provided in parallel on the main body, and a drive wheel, The two slide portions are configured to be movable forward and backward relative to the main body portion, A propulsion plate is provided on the lower surface of each of the two slide parts and is rotatably connected to the slide parts by a plate rotation axis perpendicular to the direction of the forward and backward movement of the slide parts. An amphibious transportation device, characterized in that the drive wheels are connected to a drive force transmission unit that converts the forward and backward movement of the sliding part into drive force for the drive wheels.

2. 2. The amphibious transportation device according to claim 1, wherein the two slide sections are linked together so that their forward and backward movements are always in opposite directions.

3. 2. An amphibious transportation device according to claim 1, wherein the propulsion plate is configured to be rotatable only within a range in a backward direction from a position suspended from the plate rotation axis of the slide portion.

4. The gripping portion is connected via a through-connecting member that passes through the main body in the up-down direction, The through-connection member is configured to be rotatable relative to the main body portion about a central axis of the through-connection member, 2. An amphibious transportation device according to claim 1, wherein a non-driven wheel is connected to the through-connection member on a lower side than the main body portion.

5. The gripping portion is connected via a through-connecting member that passes through the main body in the up-down direction, The through-connection member is configured to be rotatable relative to the main body portion about a central axis of the through-connection member, 2. An amphibious transportation device according to claim 1, wherein a direction changing plate is connected to the through-connection member on a lower side than the main body portion.

6. A rack gear is provided on the lower surface of the slide portion and is continuous in the forward and backward direction of the slide portion, the driving force transmission unit includes a driving gear that meshes with the rack gear and is rotatable in a direction perpendicular to the advancing and retreating direction of the slide portion, and a driving force transmission belt that is wound around a driven gear provided on the driving wheel, 2. An amphibious transportation device as described in claim 1, characterized in that the drive gear transmits the rotational force received when the sliding portion moves in the forward direction to the driven gear via the drive force transmission belt as drive force for the drive wheel.

7. 7. An amphibious transportation device according to claim 6, wherein the drive gear or the driven gear has a ratchet mechanism that prevents the transmission of a rotational force received when the sliding portion moves in the backward direction.

8. 2. An amphibious transportation device according to claim 1, wherein the main body is provided with a brake mechanism arranged to be slidable in the up-down direction relative to the main body.

9. The main body further includes an auxiliary wheel.

9. An amphibious transportation device according to claim 8, wherein the auxiliary wheels are configured to be movable forward and backward in the vertical direction relative to the main body in conjunction with the vertical movement of the brake mechanism.

10. 3. An amphibious transportation device as described in claim 2, characterized in that the main body portion has an emergency stop mechanism that fixes the positions of the two sliding portions when the link between the forward and backward movements of the two sliding portions is released.

11. A land-use mobile device having a main body, a gripping part connected to the main body, two plate-shaped slide parts provided in parallel on the main body, and a drive wheel, The two slide portions are configured to be movable forward and backward relative to the main body portion, The drive wheel is connected to a drive force transmission unit that converts the forward and backward movement of the slide part into a drive force of the drive wheel, The two slide parts are interlocked so that their forward and backward movements are always in opposite directions, A rack gear is provided on the lower surface of the slide portion and is continuous in the forward and backward direction of the slide portion, the driving force transmission unit includes a driving gear that meshes with the rack gear and is rotatable in a direction perpendicular to the advancing and retreating direction of the slide portion, and a driving force transmission belt that is wound around a driven gear provided on the driving wheel, the drive gear transmits a rotational force received when the slide portion moves in the advancing direction to the driven gear as a driving force of the drive wheel via the drive force transmission belt, A land-based transportation device, wherein the drive gear or the driven gear has a ratchet mechanism that prevents the transmission of a rotational force received when the sliding portion moves in the backward direction.

12. A water-use moving device having a main body, a gripping part connected to the main body, and two plate-shaped slide parts provided in parallel on the main body, The two slide portions are configured to be movable forward and backward relative to the main body portion, A propulsion plate is provided on the lower surface of each of the two slide parts and is rotatably connected to the slide parts by a plate rotation axis perpendicular to the direction of the forward and backward movement of the slide parts. The two slide parts are interlocked so that their forward and backward movements are always in opposite directions, 13. A water-based vehicle according to claim 12, wherein the propulsion plate is configured to be rotatable only within a range in a backward direction from a position suspended from the plate rotation axis of the slide portion.

Images