JPS63315Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a human-powered vehicle that uses seesaw motion as an exercise tool.

Conventionally, the vertical movement of the seesaw, which is moved by the user, is converted into rotational movement using a crankshaft.
There is a human-powered vehicle that has the ability to rotate its wheels and travel in a straight line. However, this type of human-powered vehicle only moves straight and cannot change its direction of travel, so it has the disadvantage of being of little interest and being of low utility value.

In view of the above, the object of this invention is to provide a human-powered vehicle that utilizes seesaw motion in which the direction of travel can be freely changed.

The gist of this invention is to transmit the vertical motion of the seesaw to the drive member via the connecting rod to rotate the drive wheels, and to operate the steering member of the seesaw to direct the idle wheels pivotally supported on the main frame. It is a human-powered vehicle that is configured to be able to travel while freely changing the direction of travel.

The structure and operation will be explained below with reference to FIGS. 1 to 3 showing embodiments of this invention.

Reference numeral 1 designates a seesaw on which users sit astride each other, facing each other, as shown in FIG. 1, for example, and a bearing fitting 1A is fixed to the central portion of the seesaw. Reference numeral 2 denotes a main frame, with footboards 2A attached to both ends thereof, and a guide post 14 as an upright support member fixed to the center. The main shaft 13 is inserted into the guide post 14 in a loose state, and a horizontal support shaft 13A is fixed to the upper end of the main shaft 13.
3A is inserted through the inside of the bearing fitting 1A. Therefore, the seesaw 1 installed on the support shaft 13A moves up and down using the support shaft 13A as a tilting fulcrum. Reference numeral 3 denotes a subframe fixed to the lower end of the main shaft 13, and a crankshaft 5 as a driving member is rotatably mounted on the subframe 3 as shown in FIG. 4 is a connecting rod with a handle attached to the crank part of the crankshaft 5, which is attached to the seesaw 1 mentioned above.
It is pivotally supported by a connecting fitting 1B fixed to the seesaw 1, and its upper end protrudes above the seesaw 1. 6 is a sprocket fixed to the rotating shaft of the crankshaft 5; 7 is a sprocket fixed to the drive wheel 9 which is rotatably supported on the sub-frame 3; a chain 8 is wound around these sprockets 6 and 7; ing. Reference numeral 10 denotes a floating wheel rotatably supported on the sub-frame 3. Therefore, when the seesaw 1 is moved up and down, the crankshaft 5 rotates via the handle-equipped connecting rod 4, and this rotation is transmitted to the drive wheel 9 via the sprockets 6, 7 and the chain 8. 11 and 12 are main frame 2
This is an idler wheel that rotates while being pivotally supported by bearing fittings 2B and 2C fixed to the. 15 is the main shaft 13
A direction changing lever as a steering member is fixed to the lower end, 16 is a tie rod attached to the direction changing lever 15, and 17 and 18 are tie rods 1, respectively.
6 and the idler wheels 11 and 12. Therefore, when the seesaw 1 is rotated at an appropriate angle in the horizontal direction about the main shaft 13, the third
As shown in the figure, the direction of the idle wheels 11 and 12 is changed through the direction change lever 15, tie rod 16, and knuckles 17 and 18. 20 is seesaw 1
The handle is firmly attached to the handle.

In a human-powered vehicle configured as described above,
For example, as shown in FIG. 1, users sit facing each other on the seesaw 1, with one user grasping the upper end of the connecting rod 4 with a handle, and the other user grasping the handle 20. . Next, in this state, the user alternately bends and stretches his knees to tilt the seesaw 1 up and down. Such vertical movement of the seesaw 1 is transmitted to the crankshaft 5 by the connecting rod 4 with a handle, and the crankshaft 5 rotates.
The rotational motion of the crankshaft 5 is transmitted to the drive wheel 9 by a chain 8 wound around sprockets 6 and 7, so that the drive wheel 9 rotates. Following the rotation of this driving wheel 9, other idle wheels 10, 1
1 and 12 also rotate, so this human-powered vehicle travels straight. When the seesaw 1 is rotated by an appropriate angle in the horizontal direction during such vertical movement of the seesaw 1, the idle wheels 11 and 12 rotate while changing direction via the direction changing lever 15, tie rod 16, and knuckles 17 and 18. Therefore, this human-powered vehicle travels while freely changing its direction of travel.

In this case, if the user on the right side as shown in FIG. 1 stretches his knees first, and the user on the left side bends his knees strongly, the seesaw 1 will tilt to the left, so the connecting rod 4 with handle will descend and the crankshaft 5 will move. Since the vehicle rotates counterclockwise and the drive wheels 9 also rotate counterclockwise, the human powered vehicle moves to the left. Conversely, if the user on the left stretches his knees first, and the user on the right bends his knees strongly, the seesaw 1 will tilt to the right, so the connecting rod 4 with handle will rise and the crankshaft 5
rotates clockwise and the drive wheels 9 also rotate clockwise, so this human-powered vehicle moves to the right.
Therefore, depending on how human power is applied when the seesaw 1 starts moving, this human-powered vehicle can move forward or backward. Note that when this human-powered vehicle stops with the connecting rod 4 with the handle reaching the top dead center, bottom dead center, or the vicinity of the crankshaft 5, the user on the left side The traveling direction of this human-powered vehicle is determined by moving the seesaw 1 up and down while strongly pulling the connecting rod 4 in the direction a or pushing it in the direction b.

As mentioned above, the human-powered vehicle according to this invention can freely change the direction of travel while moving the seesaw up and down, making it possible to go around zigzag courses in parks, amusement parks, etc., making it even more interesting to use. This has the effect of increasing the value of the product.

[Brief explanation of the drawing]

The figures show an embodiment of this invention; FIG. 1 is a front view, FIG. 2 is a bottom view, and FIG. 3 is a bottom view with the traveling direction changed. DESCRIPTION OF SYMBOLS 1... Seesaw, 2... Main frame, 3... Sub-frame, 4... Connecting rod, 5... Drive member (crankshaft), 9... Drive wheel, 11, 12...
... Idle wheel, 13 ... Main shaft, 14 ... Support member (guide post), 15 ... Steering member (direction changing lever), 16 ... Tie rod, 17, 18 ... Knuckle.

Claims (1)

[Scope of utility model registration request] A connecting rod connects the seesaw 1, which is tiltably installed on a main shaft 13 installed in a support member 14 of the main frame 2, and the drive member 5, which rotates a drive wheel 9 that is pivotally supported on a sub-frame 3 fixed to the main shaft 13. A steering member 15 that is connected to the main shaft 13 by a tie rod 16 and a steering member 15 that is fixed to the main shaft 13 and idle wheels 11 and 12 that are rotatably supported by the main frame 2 are connected by a tie rod 16 and a nutcle 1.
A human-powered vehicle that utilizes seesaw motion, characterized in that it is configured by connecting parts 7 and 18.