CN110960836A

CN110960836A - Breaststroke board

Info

Publication number: CN110960836A
Application number: CN201911033936.3A
Authority: CN
Inventors: 梁富泉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-04-07

Abstract

A breaststroke board which can help people who cannot swim to swim freely. It is composed of a group of fixed plates, a movable plate, a pivot and a connecting shaft, and a movable plate expanding and contracting positioning block. The movable plate controls the opening and the contraction limit positions of the movable plate through the opening and the contraction limit stops of the front and the rear groups of movable plates, and the movable plates automatically open to the largest area when a swimmer pedals water backwards, so that the pedal force generated by the swimmer is converted into the driving force to the maximum extent. After pedaling to a limit amplitude, the breaststroke plate automatically contracts to a state of minimum water facing area and minimum resistance under the action of relative water flow, thereby completing an ideal pedaling and contraction movement period. Because of the one-way force applying mode of the breaststroke plate, the operator can freely move in water as long as the continuous pedaling of feet can be kept even if the operator does not swim.

Description

Breaststroke board

Technical Field

The invention relates to a breaststroke plate which can help a person swim in water at high speed and with labor saving.

Background

When people move in water, the resistance is very large, people can not swim, and people can not freely move in water by launching water; in order to help increase the speed of people moving in water, people invented flippers, but they have the following obvious weaknesses: 1. the flipper is the extension of a human foot, the output thrust is the direction from the heel to the toes, and the output force is asymmetrical to the human foot, so the motion strain of the human foot is easily caused; 2, because of the asymmetrical combination with the feet of the person, the water can be driven only by the water beating of the legs of the person; 3. flippers made of rubber or plastic materials must have a certain flexibility to enable a relatively ideal force output during the water-beating movement of the foot; in brief, the existing flippers are suitable for free swimming, backstroke and butterfly swimming, and the most labor-saving breaststroke during swimming is not suitable for using the flippers, because the asymmetry of feet is increased by the flippers taking the wrists as nodes, the fatigue and the damage of muscles of the feet are easily caused; if the backward kick water action of breaststroke is adopted, the flexible structure and the foot fin which is not symmetrical to the foot part deform, and the ideal force output cannot be obtained.

Disclosure of Invention

The object of the invention is to provide a novel, simple and specially adapted breaststroke pedal device made of hard plastic material, which enables the user to increase the pedaling efficiency in breaststroke by times and enables the user to move freely in water immediately after swimming, even if the user does not swim. It is known that the so-called no swimming is the inability to keep the body (limbs) in the water in a correct position for the exertion of force. If a correct force-exerting posture can be freely maintained, it is said to swim. The water has resistance and buoyancy, and the limit distance of the human jumping on the land is about 9 meters by utilizing long-distance run-up; jumping in situ without run-up to a distance of less than 5 m; and the motion efficiency is much lower than that of the land under the condition that the person does not borrow force in the water. However, a normal person can easily move for a distance of ten meters by means of the buoyancy of water to the body of the person by pedaling the wall of the swimming pool forcibly without running. The invention designs a swimming pedal by using the principle, so that a user can automatically open when kicking legs in water, a movable wall is formed behind the feet of the user, and the pedaling force is converted into forward power to the maximum extent; when a user slides and retracts legs by inertia in water, the resistance is changed to be minimum by automatic contraction by utilizing the relative motion of the human body and the water, and even people who cannot swim can move for a long distance in a high speed and labor-saving manner due to the reasonable one-way force exerting structure.

The purpose of the invention is achieved by the following steps: the breaststroke board consists of a fixed board positioned in the center and two movable boards positioned at two ends of the fixed board, wherein the fixed board and the movable boards are connected into a whole through a pivot and a connecting shaft. The front and rear groups of movable plate opening and contracting limit stops are respectively arranged at appropriate positions at two ends of the fixed plate, and the movable plates cannot move continuously after reaching the positions and can only move in opposite directions. When the movable plate is opened to the maximum position, the movable plate and the fixed plate are in the same plane, and the breaststroke plate has the maximum resistance, so that the pedaling force generated by the sporter can be converted into the force for driving the body to move in the direction opposite to the pedaling direction in the water to the maximum extent. After pedaling to a limit amplitude, the body can continue to move due to the inertia of the movement, at the moment, the breaststroke plate can automatically contract to a state with the minimum resistance under the action of relative water flow, and when a swimmer contracts the leg which is pedaled out by the swimmer, the loss of force is very small, so that an ideal pedaling and contraction movement cycle is completed. Because of the one-way force applying mode of the breaststroke plate, the operator can freely move in water as long as the continuous pedaling of feet can be kept even if the operator does not swim.

Drawings

Figure 1 is a side view of the breaststroke plate in an open position.

Figure 2 is a side view of the breaststroke plate in a collapsed condition.

FIG. 3 is a schematic view of a breaststroke paddle plate.

Figure 4 is a top view of the breaststroke plate in an open position.

In the drawing, a fixed plate (1), a foot protection side (2), a lacing hole (3), a movable plate connecting arm (4), a movable plate contraction limiting stopper (5), a movable plate expansion limiting stopper (6), a pivot and connecting shaft (7), a movable plate fixing knob (8), a movable plate (9), a movable plate connecting pivot (10), a movable plate contraction positioning stopper (11) and reinforcing ribs (12) are arranged.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The invention is further described below with reference to the accompanying drawings: FIG. 1 is a side view of the breaststroke plate in an open position; FIG. 2 is a side view of the breaststroke plate in a collapsed state; FIG. 4 is a top view of the breaststroke plate in an open position; the breaststroke board comprises a fixed board (1), a foot protection side (2), a lacing hole (3), a movable board connecting arm (4), a movable board contraction limiting stopper (5), a movable board expansion limiting stopper (6), a pivot and connecting shaft (7), a movable board fixing knob (8), a movable board (9), a movable board connecting pivot (10), a movable board contraction positioning stopper (11), a reinforcing rib (12) and the like. The fixed plate (1) and the movable plate (9) are connected with the connecting shaft (7) into a whole through a pivot. The two groups of movable plate contraction limiting stops (5) and movable plate expansion limiting stops (6) are respectively arranged at proper positions at two ends of the fixed plate (1), and the movable plate (9) cannot move continuously after reaching the proper positions and can only move in the opposite direction. When the movable plate (9) is opened to the maximum position, the movable plate and the fixed plate (1) are in the same plane, the area of the breaststroke plate is maximum, the corresponding resistance in water can also be maximum, and the pedaling force generated by a sporter can be converted into the driving force for driving the body to move in water to the maximum extent. After pedaling to the limit amplitude, the body can continue to move due to inertia, at the moment, the breaststroke board can automatically contract to the state of minimum water-facing area and minimum resistance under the action of relative water flow, and when a swimmer contracts the leg kicked out by the swimmer, the force loss is very small, so that an ideal pedaling and contraction movement cycle is completed. Because of the one-way force applying mode of the breaststroke plate, the operator can freely move in water as long as the continuous pedaling of feet can be kept even if the operator does not swim. The function of the movable plate fixing button (8) is to keep the movable plate (9) and the fixed plate (1) in a fixed straight state, so that a swimmer can walk on the shore conveniently. As can be seen from fig. 3, a movable plate retraction positioning stop (11) is provided at a suitable position of the movable plate (9), and its function is to prevent the movable plate (9) from opening to a state completely perpendicular to the fixed plate (1) as shown in fig. 2, but to ensure that the movable plate (9) is not perpendicular to the fixed plate (1) when retracted to the maximum limit (i.e. the maximum movement range of the movable plate (9) is less than 90 degrees), so that the reliability of the movable plate (9) in the opening operation can be ensured, because in the state shown in fig. 2, if the movable plate (9) is completely perpendicular to the fixed plate (1) after being retracted. The pedal force generated by an operator is in the same direction with the movable plate (9), the movable plate (9) may not act, so the movable plate retraction positioning stop (11) is arranged to ensure that the movable plate (9) is not perpendicular to the fixed plate (1) in the fully opened state, thus the movable plate (9) can be prevented from not acting.

Claims

1. A breaststroke board is composed of a fixed board, a foot protection side, a lacing hole, a movable board connecting arm, a movable board contraction limiting stopper, a movable board expansion limiting stopper, a shaft pivot and connecting shaft, a movable board fixing knob, a movable board connecting pivot, a movable board contraction positioning stopper and a reinforcing rib, and is characterized in that: the two ends of the fixed plate (1) are respectively provided with a movable plate (9), the movable plates (9) are connected with the fixed plate (1) through a pivot and a connecting shaft (7), a front movable plate contraction limiting stopper (5) and a rear movable plate contraction limiting stopper (5) and a movable plate expansion limiting stopper (6) are respectively arranged at proper positions of the two ends of the fixed plate (1), and the movable plates (9) cannot move continuously after reaching the proper positions and can only move towards opposite directions.

2. A breaststroke plate of claim 1 wherein: a movable plate contraction positioning stop (11) is arranged at a proper position of the movable plate (9) and has the function of preventing the movable plate (9) from contracting to a state of being completely vertical to the fixed plate (1), but ensuring that the movable plate (9) is not vertical to the fixed plate (1) when contracting to the maximum limit, so that the movable plate (9) can be ensured to be reliable when opening.

3. The swimming and bodyboard as claimed in claim 1 and claim 2, wherein: the two ends of the fixed plate are provided with movable plate fixing knobs (8) which have the function of keeping the movable plate (9) and the fixed plate (1) in a fixed straight state, so that a swimmer can walk on the shore conveniently.