JPS6130491A - Outrigger rotary type oar rotatably supporting device for sliding boat - Google Patents

Abstract

PURPOSE:To increase the traveling distance of the end of an oar to propel a boat faster by supporting an outrigger so as to make a circular movement and transmitting the reciprocating linear movement of a sliding seat to a rowlock as a reciprocating circular movement via said outrigger. CONSTITUTION:Each time a sliding seat 3 slides over a rail 4, a first shaft 5 moves together with this sliding seat 3, causing an engaged part 6 which is connected to the first shaft 5, to make a reciprocating circular movement centering around a second shaft 7. Therefore, a rowlock 10 which is the center of rotation of an oar 2, also makes a reciprocating circular movement centering around the second shaft 7. Since the direction of the reciprocating circuit movement of the rowlock 10 is opposite to the direction of the circular movement of the grip part 2a of the oar 2, the distance at which the end of the oar 2 travels at one movement, is longer than that in the case of a fixed outrigger type model. That is, the distance which is rowed at one stroke becomes longer, improving the propelling efficiency as much.

Description

[Detailed Description of the Invention] Since ancient times, rowing boats have been designed to be faster and more efficient with less energy loss. (Low lock) is out from the side of the boat! 2! Boats and equipment have been developed that are designed to extend out and are installed at the end of the nine outriggers, the seats are not sliding seats, and the width of the boat is made as small as possible. This is considered the most efficient boat. In particular, for boats other than the standard knuckle fore and shelf ore boats used in the National Athletic Meet and High School Championships, etc., there are no regulations such as length, width, depth, weight, etc., so they can be made freely. can.

[Technical field to which the invention pertains]

The present invention provides the aforementioned unstandardized boat with a rail provided in the longitudinal direction of the boat, particularly inside the boat body, and a sliding seat provided on the rail so as to be able to slide freely, and also provided so as to protrude outward from the gunwale. The present invention relates to an oar pivoting device for a sliding yearling boat, in which the oars are pivoted to the ends of outriggers with locks.

(Prior art) The conventional oar pivot of this type of sliding boat is
Since the outrigger is fixed and the low lock position is fixed, the distance that the tip of the oar moves at one time, in other words, the distance rowed at one time is short, and the torque of rowing the oar per unit time is small. Therefore, the propulsion force is low and the propulsion efficiency is poor, making it impossible to propel the boat faster.

[Purpose of the invention]

The present invention has been made in order to improve the above-mentioned drawbacks, and its purpose is to support the outrigger in a trap that allows circular arc movement, and to transfer the reciprocating linear movement of the sliding seat to the low lock via the outrigger. To transmit the motion as a reciprocating circular arc motion, the outrigger of a sliding boat can be moved faster by increasing the movement distance of the tip of the oar pivoted on the low lock. It is to provide.

[Structure of the invention]

In order to achieve the above object, the device of the present invention has a rail 4 provided inside the boat body 1 in the longitudinal direction of the boat as shown in FIGS. 1 to 3, and a sliding seat 3 slidably mounted on the rail 4. A row lock 10 is provided at the end of the outrigger 9 which is provided so as to protrude outward from the gunwale.
For the amount of oar pivoting of a sliding boat with oars 2 pivoted, the outrigger 9 has a crank shape that curves downward from the center beyond the gunwale and further curves in the width direction of the boat. An engaging portion 6 is provided at the end of the outrigger 9 on the side opposite to the low lock 10, and the outrigger
A support part 8 is provided at a portion closer to the low lock 10 than the center of the outrigger 9, and the engaging part 6 of the outrigger 9 is inserted into the first shaft 5, which projects vertically downward from the center of the lower part of the sliding seat 3, and is linked. At the same time, the support part 8 of the IJ gar 9 is inserted and supported by the other end of the L-shaped second shaft 7, which has one end attached to a suitable position on the ship's side.

[Configuration of Example]

Fig. 1 is a perspective view of a sliding boat to which the device of the present invention is attached, Fig. 2 is a front view of an embodiment of the device of the present invention attached to a sliding boat, and Fig. 3 is a perspective view of an outrigger in the device of the present invention. Illustrated.

First, to explain its structure, 1 is the boat body, 4 is a rail provided inside the boat body 1 in the length direction of the boat, 3
9 is a sliding seat provided on the rail 4 so as to be able to slide freely, and an outrigger 12 provided so as to protrude outward from the ship's side is an oar that is pivoted to the end of the outrigger 9 with a row lock 10. .

In the present invention, in such an oar pivot device for a sliding boat, the outrigger 9 has a crank shape that is curved downward at a portion beyond the gunwale from the center and further curved in the width direction of the boat.

An engaging portion 6 is provided at the end of the crank-shaped outrigger 9 on the side opposite to the row lock 10, and a support portion 8 is provided at a portion of the outrigger 9 closer to the row lock 10 than the center.

Then, the engaging part 6 of the outrigger 9 is inserted into the first shaft 5 that projects vertically downward from the center of the lower part of the sliding sheet 3, and the engaging part 6 of the outrigger 9 is connected to the first shaft 5. The support portion 8 of the IJ guar 9 is inserted into the other end of the second shaft 7 of the shape of the second shaft 7 to support it.

In this embodiment, the lifting platform and the engaging part 6 have a bifurcated shape that opens left and right, and the end of the outrigger 9 on the low lock side has a bifurcated shape that opens vertically. 10 is sandwiched and pivotally installed.

[Effect of the embodiment]

Next, its effect will be explained.

First, the posture of the rower 11 at the beginning of rowing is as shown in the first diagram, with his upper body bent forward, his arms extended forward while grasping the grips 23 of the oars 2, and his nine legs placed on the stretcher 12. The sliding seat 3 is placed in front of the rower 11 by bending the rowers 11 all at once. In this position, next, move your upper body to rower 1.
The rower 1 pulls the oar 2 with his arm while raising the rower 1 backward, and at the same time gradually stretches his legs and slides the sliding seat 3 on the rail 4 toward the rear of the rower 11, that is, in the direction of port movement. Finally, when the legs are stretched out and the oars 2 are brought close to the chest, the boat body 1 is propelled by each rower 11 repeating this series of actions at the same time. That's what I do.

In the case of the present invention, each time the sliding seat 3 slides on the rail 4, the first shaft 5 moves together with the sliding seat 3, and the engaging portion 6 linked to the first shaft 5 moves along with the second shaft 7. Makes a reciprocating circular arc movement around . Therefore, the row lock 10, which is the center of rotation of the oar 2, also moves in a reciprocating arc around the second shaft 7.

In other words, the reciprocating linear motion of one sliding seat 3 is transmitted through the outrigger 9 supported on the second shaft 7 as a reciprocating arcuate motion of the low lock IOK. The circular motion direction of the row lock 100 is opposite to the circular motion direction of the grip portion 2a of the oar 2, and the tip 2b of the oar 2
Since the distance rowed per exercise is long, the propulsion efficiency is improved accordingly.

To prove this, Tables 1 and 2 show the results of nine experiments conducted on books using the conventional method and the method according to the present invention. Table 1 shows the oar rowing torque per unit time for the oar load torque for the conventional method K.
The results are shown after 0 tests, and the results are shown in which the oar rowing torque per unit time relative to the oar load torque was tested and measured the same number of times for the second book of our company's method of the present invention.

Table 1, Table 2, and Table 4 are graphs of the average values of the experimentally measured values in Tables 1 and 2. That is, a and b are for the conventional method and the present method, respectively. It is a graph showing the average value of the measurement results of the torque of rowing the oars per unit time with respect to the load torque of the oars. Above 1. As is clear from the graphs in Table 2 and Figure 4, even considering that the oar rowing torque per unit time is slightly larger in the present invention type I than in the conventional system, the boat body 1
can be said to proceed faster.

〔Effect of the invention〕

As described above, according to the present invention, the rail 4 is provided inside the boat body 1 in the longitudinal direction of the boat, and the sliding seat 3 is provided on the rail 4 so as to be slidable, and is also provided so as to protrude outward from the gunwale. In the oar pivot device for a sliding boat, the oar 2 is pivoted to the end of the outrigger 9 with a row lock 10, and the outrigger 9 is curved downward at a part beyond the gunwale from the center, and further extends in the width direction of the boat. An engaging part 6 is provided at the end of the outrigger 9 on the side opposite to the low lock 10, and an engagement part 6 is provided at the end of the outrigger 9 on the side opposite to the low lock 10 from the center of the outrigger 9. A supporting part 8 is provided, and the engaging part 6 of the outrigger 9 is inserted into and linked to the first shaft 5 that projects vertically downward from the center of the lower part of the sliding seat 3, and one end is attached to a suitable position on the outboard side. Attach 7 to the other end of the 5-shaped second shaft 7)
The support part 8 of the gear 9 is inserted and supported, and the outrigger 9 is supported so that it can move in an arc, and the sliding seat 3 is moved in a reciprocating arc through the outrigger 9 to the low lock 10. Since it is transmitted as motion, compared to the conventional fixed outrigger system, the distance of movement of the oar tip 5lJ2b, in other words, the distance rowed at one time, can be increased, and the torque of rowing the oar 2 per unit time can be increased. Since this can increase the propulsive force, the propulsion efficiency is improved and the boat can be propelled faster.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a sliding boat equipped with the device of the present invention, Figure 2 is a front view of an embodiment of the device of the present invention installed on a sliding boat, and Figure t43 is a perspective view of the IJ gar of the device of the present invention. Perspective views, a and b of FIG. 4 are graphs showing the average value of the measurement results of the oar rowing torque per unit time with respect to the oar load torque for the conventional method and the present invention method, respectively. . 1... port body, 2... old... all,
3. River...Sliding seat, 4...
・Rail, 5...1st axis, 6...
...Engagement part, 7...Second shaft, 8...
Bearing part, 9...Outrigger-110...
...Row lock, 11... Rower, 12...
Stamp/stretcher. ; □( Summary 1 - So-called all-O moxibustion torque procedure amendment (method) % formula % [1 1, Incident indication Showa (5) Patent Application No. 151818 2, Invention 0
Name Sliding boat outrigger - Rotating oar pivot device 2-28-4 Tomigaya, Shibuya-ku, Tokyo Educational corporation Tokai University 6169 Patent attorney Ishido, 1 Le 5, Subject of amendment 4, Brief explanation of drawings 6, Date of amendment order: October 1, 1930 (shipment date) 7. Contents of amendment i In the specification, page 12, lines 5 to 6, "a and b of Figure 4 are respectively" changed to "Figure 4 is" I am corrected.

Claims (1)

[Claims] A rail 4 is provided inside the boat body 1 in the longitudinal direction of the boat,
A sliding seat 3 is provided on this rail 4 so as to be able to slide freely, and an oar 2 is attached with a low lock 10 to the end of an outrigger 9 provided so as to protrude outward from the gunwale.
In the oar pivot device for a sliding boat, the outrigger 9 has a crank shape that curves downward from the center beyond the gunwale and further curves in the width direction of the boat, and the outrigger 9 has this crank shape. An engaging portion 6 is provided at the end of the outrigger 9 on the side opposite to the row lock 10, and a support portion 8 is provided at a portion closer to the row lock 10 than the center of the outrigger 9, and is provided to protrude vertically downward from the center of the lower part of the sliding seat 3. The engaging part 6 of the outrigger 9 is inserted into the first shaft 5 and connected thereto, and the support part 8 of the outrigger 9 is connected to the other end of the L-shaped second shaft 7, which has one end attached to a suitable position on the outboard side. A rotating outrigger oar support device for sliding boats that is inserted and supported.