Auxiliary device for assisting breaststroke in armed swimming

Abstract

The invention provides an armed breaststroke assisting and assisting device. The assisting and assisting device comprises an I-shaped main frame worn on the back of a human body, bamboo joint assisting mechanisms installed on the two sides of the upper portion of the I-shaped main frame, water absorption propelling assisting mechanisms installed on the two sides of the lower portion of the I-shaped main frame, and fastening straps connected with the upper portion and the lower portion of the I-shaped main frame. Wherein the upper part of the I-shaped main frame is positioned on the shoulder of a human body, and the lower part of the I-shaped main frame is positioned on the waist of the human body; first ball head shafts extending outwards are arranged on the two sides of the upper portion of the I-shaped main frame, the bamboo joint auxiliary mechanism is installed on the first ball head shafts through bidirectional ball hinge grooves, T-shaped fixing shafts extending outwards are arranged on the two sides of the lower portion of the I-shaped main frame, and the water absorption propelling auxiliary mechanism is hinged to the T-shaped fixing shafts through swing shafts. The bamboo joint auxiliary mechanism is used for assisting upper limb paddling actions, the water absorption propelling auxiliary mechanism is used for assisting leg propelling actions, and the device is mainly used for helping the swim-across person to save physical energy during breaststroke and avoiding the muddy water phenomenon possibly caused by poor physical strength.

Description

Technical Field

[0001] This invention relates to a swimming assistance device, and more particularly to an armed swimming assistance device for breaststroke. Background Technology

[0002] Armed swimming is one of the training subjects that troops need to conduct to cope with various battlefield conditions. Armed swimming mainly uses the breaststroke and sidestroke, and when necessary, floating objects such as air bags, bamboo tubes, and rafts can be used to swim. Before swimming, clothing and equipment must be carefully checked to ensure that clothes do not catch water and personal equipment is not loose.

[0003] Breaststroke relies on the alternating arm and leg strokes to generate forward propulsion. Prolonged armed swimming can consume a lot of energy, thus affecting the swimmers' combat capabilities. The reason for choosing breaststroke for armed swimming is twofold: firstly, breaststroke helps maintain body balance, observe water surface movements, and minimizes swimming noise; secondly, breaststroke is a relatively energy-efficient swimming style. In breaststroke, the swimmer faces the water surface, with the torso below the waterline. Both legs exert force simultaneously, with the toes spread so that the feet are horizontal with the upper arms, then the swimmer kicks and squeezes the water to propel the body forward. At the same time, the arms extend forward, bend at 90 degrees during the stroke, and press the water backward, bringing the head and shoulders to the surface for breathing.

[0004] The main technical problem this invention addresses is how to reduce energy consumption during swimming. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention proposes an armed swimming assistance device for breaststroke.

[0006] The assistive device includes: a W-shaped main frame 1 worn on the back of the human body 10, bamboo joint auxiliary mechanisms 2 installed on the upper two sides of the W-shaped main frame 1, water absorption and propulsion auxiliary mechanisms 3 installed on the lower two sides of the W-shaped main frame 1, and fastening straps 4 connecting the upper and lower parts of the W-shaped main frame 1. The upper part of the I-shaped main frame 1 is located at the shoulder of the human body 10, and the lower part of the I-shaped main frame 1 is located at the waist of the human body 10. The upper part of the I-shaped main frame 1 has outwardly extending ball-head shafts 11 on both sides. The bamboo-joint auxiliary mechanism 2 is mounted on the ball-head shafts 11 via a two-way ball joint groove 12. The lower part of the I-shaped main frame 1 has outwardly extending T-shaped fixed shafts 31 on both sides. The water-absorbing propulsion auxiliary mechanism 3 is hinged to the T-shaped fixed shafts 31 via a swing shaft 32. The bamboo-joint auxiliary mechanism assists in the upper limb paddling motion, and the water-absorbing propulsion auxiliary mechanism assists in the leg propulsion motion.

[0007] Furthermore, the bamboo joint auxiliary mechanism 2 includes: an upper arm bamboo joint 13 and a lower arm bamboo joint 15 that are hinged to each other; a wrist sleeve 16 connected to the outer end of the lower arm bamboo joint 15 via a ball joint; and a bidirectional ball joint groove 12 connected to the upper end of the upper arm bamboo joint 13 via a ball joint. The ball joints at both ends of the bidirectional ball joint groove ensure that the shoulder joint is not restricted when performing the paddling action. The wrist sleeve is worn on the wrist of the human body, which drives the relative rotation between the upper arm bamboo joint 13 and the lower arm bamboo joint 15.

[0008] Furthermore, the hinge joints of the upper arm bamboo joint 13 and the lower arm bamboo joint 15 are provided with spiral springs 14 connected to both respectively. The spiral springs 14 can assist the forearm in the stroke, thereby reducing the energy consumed by the swimmer.

[0009] Furthermore, the water suction propulsion auxiliary mechanism 3 also includes: a water spray piston cylinder 50 mounted at the bottom of the swing shaft 32 via a ball joint, and an ankle sleeve 34 connected to the rod end of the water spray piston cylinder 50 via a ball joint.

[0010] Furthermore, the water-spraying piston cylinder 50 also includes: a hollow cylinder body 51, a stepped piston rod 52 capable of sliding up and down within the cylinder body 51, an upper one-way drain valve 53 and an upper one-way suction valve 54 disposed on the upper part of the cylinder body 51, and a lower one-way drain valve 55 and a lower one-way suction valve 56 disposed on the lower part of the cylinder body 51; wherein, the drain ends of the upper one-way drain valve 53 and the lower one-way drain valve 55 face the back of the human body 10, and the upper one-way suction valve 54 and the lower one-way suction valve 56... The water intake end faces the front of the human body 10; the leg kicking action of the breaststroke causes the piston rod 52 to move back and forth in the tank. When the legs extend, the piston rod extends outward, and water is drawn into the tank through the upper one-way water intake valve 54. The water that was originally in the tank is then ejected in the opposite direction of swimming forward through the lower one-way drain valve, generating a boosting force. When the legs retract, the piston rod retracts inward, and water is drawn into the tank through the lower one-way water intake valve. The water that was originally in the tank is ejected in the opposite direction of swimming forward through the upper one-way drain valve, generating a boosting force.

[0011] Furthermore, the outer end of the T-shaped fixed shaft 31 is provided with a vortex groove 311 with an opening at the bottom, and the middle part of the swing shaft 32 is provided with a swing shaft clamp 321. The fixed end of the second vortex spring 33 is installed in the vortex groove 311, and the moving end of the second vortex spring 33 is embedded in the swing shaft clamp 321 through the opening at the bottom of the vortex groove 311. During the breaststroke, when kicking, the thigh will swing back and forth relative to the human torso. Each time the thigh swings back, the second vortex spring will assist the rotation of the swing shaft through the vortex groove to further save the energy consumed when kicking.

[0012] Furthermore, the main frame 1 of the I-beam is provided with at least four counterweight floats 20 on the side facing away from the human body 10, so as to avoid the entire set of power-assisted devices increasing the burden on the wearer while swimming in the water due to their own weight. At the same time, the number and size of the counterweight floats can be adjusted according to the weight of the swimmer to avoid increasing the load on the swimmer.

[0013] The technical advantages of this invention are as follows: This assistive device, with its I-shaped main frame and fastening straps adapted to the human body, allows swimmers to wear it. Wristbands are worn on the wrists, and anklebands on the ankles. This assists swimmers in using the breaststroke swimming posture. In the arm strokes and leg kicks, unidirectional spiral springs are installed in the directions of elbow and hip joint movement to assist in the arm strokes and leg kicks. Furthermore, during the leg kick, the reciprocating movement of the piston rod relative to the cylinder, through the use of a one-way valve, ensures that the water drawn into the cylinder is ejected in the opposite direction of the swimming direction, creating a counter-force. This helps swimmers conserve more energy, thus better completing the swimming task. Attached Figure Description

[0014] Figure 1 This is a perspective view of the assistive device in this invention; Figure 2 This is a three-dimensional view of the assistive device of the present invention worn on the human body; Figure 3 This is a front view of the assistive device in this invention; Figure 4 This is a perspective view of the assistive device in this invention that conceals the bamboo joint accessory mechanism; Figure 5 This is a partial enlarged view of the swing shaft on the assist device of the present invention.

[0015] In the diagram: 1. I-beam main frame; 2. Bamboo joint auxiliary mechanism; 3. Water suction and propulsion auxiliary mechanism; 4. Fastening strap; 10. Human body; 11. Ball joint shaft one; 12. Two-way ball joint groove; 13. Upper arm bamboo joint rod; 14. Scroll spring one; 15. Lower arm bamboo joint rod; 16. Wrist sleeve; 20. Counterweight float; 31. T-shaped fixed shaft; 32. Swing shaft; 33. Scroll spring two; 34. Ankle sleeve; 50. Water spray piston cylinder; 51. Cylinder body; 52. Piston rod; 53. Upper one-way drain valve; 54. Upper one-way suction valve; 55. Lower one-way drain valve; 56. Lower one-way suction valve; 311. Scroll groove; 321. Swing shaft caliper. Detailed Implementation

[0016] The following is combined with Figures 1 to 5 Specific embodiments of the present invention will be described below.

[0017] Figure 1The overall structure of the assistive device is illustrated. The assistive device includes: a W-shaped main frame 1 worn on the back of the human body 10, bamboo joint auxiliary mechanisms 2 installed on the upper two sides of the W-shaped main frame 1, water absorption and propulsion auxiliary mechanisms 3 installed on the lower two sides of the W-shaped main frame 1, and fastening straps 4 connecting the upper and lower parts of the W-shaped main frame 1. At least four counterweight floats 20 are provided on the side of the W-shaped main frame 1 facing away from the human body 10.

[0018] Figure 2 The illustration shows the state of the assistive device worn on the human body 10 and the components of the bamboo joint assistive mechanism. The upper part of the I-shaped main frame 1 is located at the shoulder of the human body 10, and the lower part of the I-shaped main frame 1 is located at the waist of the human body 10. The upper part of the I-shaped main frame 1 has outwardly extending ball head shafts 11 on both sides. The bamboo joint assistive mechanism 2 is installed on the ball head shafts 11 through a two-way ball joint groove 12. The lower part of the I-shaped main frame 1 has outwardly extending T-shaped fixed shafts 31 on both sides. The water absorption and propulsion assistive mechanism 3 is hinged to the T-shaped fixed shafts 31 through a swing shaft 32.

[0019] The bamboo joint auxiliary mechanism 2 includes: an upper arm bamboo joint rod 13 and a lower arm bamboo joint rod 15 that are hinged to each other; a wrist sleeve 16 connected to the outer end of the lower arm bamboo joint rod 15 via a ball joint; and a bidirectional ball joint groove 12 connected to the upper end of the upper arm bamboo joint rod 13 via a ball joint. The hinge joint of the upper arm bamboo joint rod 13 and the lower arm bamboo joint rod 15 is provided with a spiral spring 14 that is connected to both of them.

[0020] Figure 3 The diagram illustrates the connection between the water suction propulsion auxiliary mechanism and the main frame, as well as its overall structure. The water suction propulsion auxiliary mechanism 3 also includes: a water spray piston cylinder 50 mounted at the bottom of the swing shaft 32 via a ball joint, and an ankle sleeve 34 connected to the rod end of the water spray piston cylinder 50 via a ball joint.

[0021] Figure 4 The specific structure of the water suction propulsion auxiliary mechanism is illustrated. The water spray piston cylinder 50 also includes: a hollow cylinder body 51, a stepped piston rod 52 that can slide up and down inside the cylinder body 51, an upper one-way drain valve 53 and an upper one-way suction valve 54 located on the upper part of the cylinder body 51, and a lower one-way drain valve 55 and a lower one-way suction valve 56 located on the lower part of the cylinder body 51; wherein, the drain ends of the upper one-way drain valve 53 and the lower one-way drain valve 55 face the back of the human body 10, and the suction ends of the upper one-way suction valve 54 and the lower one-way suction valve 56 face the front of the human body 10.

[0022] Figure 5The diagram illustrates a partial structure at the T-shaped fixed shaft 31. The outer end of the T-shaped fixed shaft 31 is provided with a scroll groove 311 with an opening at the bottom. The middle part of the swing shaft 32 is provided with a swing shaft caliper 321. The fixed end of the scroll spring 33 is installed in the scroll groove 311, and the moving end of the scroll spring 33 is embedded in the swing shaft caliper 321 through the opening at the bottom of the scroll groove 311.

[0023] Working principle: Swimmers put wrist sleeves 16 and ankle sleeves 34 on their wrists and ankles respectively. The I-shaped main frame 1 and fastening straps 4 are worn on the torso of the human body 10. After entering the water, the counterweight float 20 ensures that the entire power assist device will not sink. When swimming in the breaststroke, the swimmer's arms need to go through a stroke motion of extending forward, bending the upper and lower arms to press the water, pulling them inward, and then extending forward again. The two ends of the bidirectional ball joint groove 12 form a ball joint pair with the ball head shaft 11 and the upper arm bamboo joint rod 13 at the shoulder joint, respectively, to ensure that the shoulder joint is not restricted when the arms are stroking. When the upper and lower arms bend to press the water, the elasticity of the spiral spring 14 between the upper arm bamboo joint rod 13 and the lower arm bamboo joint rod 15 forms a combined force with the arm movement to reduce the force used by the swimmer when stroking.

[0024] At the same time, the legs need to go through the following actions: retracting the legs, kicking the legs outward, squeezing the water inward, and then retracting the legs again. The T-shaped fixed shaft 31 is fixedly installed at both ends of the lower part of the I-shaped main frame 1. A relatively short swing shaft 32 is hinged on the T-shaped fixed shaft 31 to adapt to the back and forth swing of the leg movements. The lower end of the swing shaft 32 is connected to the water spray piston cylinder 50 through a ball joint to adapt to the leg movements of kicking the water in the directions of the human body 10.

[0025] When the legs are pulled in, the ankles gradually move closer to the hip joint, the piston rod 52 retracts inward, and water is drawn into the cylinder 51 through the lower one-way suction valve 56. The water originally in the cylinder 51 is ejected in the opposite direction of swimming forward through the upper one-way discharge valve 53, generating a counter-propulsion force. When the legs are kicked, the ankles gradually move away from the hip joint, and water is drawn into the cylinder 51 through the upper one-way suction valve 54. The water originally in the cylinder 51 is ejected in the opposite direction of swimming forward through the lower one-way discharge valve 55, generating a counter-propulsion force.

[0026] In addition, the spiral spring 33 installed inside the T-shaped fixed shaft 32 will act on the swing shaft 32 through the swing shaft caliper 321 when the thigh swings backward relative to the torso, so as to reduce the physical energy consumed when kicking.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An armed swimming aid for breaststroke, characterized in that, The assistive device includes: an I-shaped main frame (1) worn on the back of the human body (10), bamboo joint auxiliary mechanisms (2) installed on the upper two sides of the I-shaped main frame (1), water absorption and propulsion auxiliary mechanisms (3) installed on the lower two sides of the I-shaped main frame (1), and fastening straps (4) connecting the upper and lower parts of the I-shaped main frame (1). Among them, the upper part of the I-shaped main frame (1) is located at the shoulder of the human body (10), and the lower part of the I-shaped main frame (1) is located at the waist of the human body (10); The upper two sides of the I-shaped main frame (1) are provided with outwardly extending ball head shafts (11), and the bamboo joint auxiliary mechanism (2) is installed on the ball head shafts (11) through the bidirectional ball joint groove (12). The lower two sides of the I-shaped main frame (1) are provided with outwardly extending T-shaped fixed shafts (31), and the water suction and propulsion auxiliary mechanism (3) is hinged to the T-shaped fixed shafts (31) through the swing shaft (32).

2. The armed swimming assistance device for breaststroke according to claim 1, characterized in that, The bamboo joint auxiliary mechanism (2) includes: an upper arm bamboo joint rod (13) and a lower arm bamboo joint rod (15) that are hinged to each other, a wrist sleeve (16) connected to the outer end of the lower arm bamboo joint rod (15) by a ball joint, and a bidirectional ball joint groove (12) connected to the upper end of the upper arm bamboo joint rod (13) by a ball joint.

3. The armed swimming assistance device for breaststroke according to claim 2, characterized in that, The hinge joints of the upper arm bamboo joint rod (13) and the lower arm bamboo joint rod (15) are provided with spiral springs (14) that are respectively connected to both.

4. The armed swimming assistance device for breaststroke according to claim 1, characterized in that, The water-absorbing propulsion auxiliary mechanism (3) further includes: a water-spraying piston cylinder (50) installed at the bottom of the swing shaft (32) via a ball joint, and an ankle sleeve (34) connected to the rod end of the water-spraying piston cylinder (50) via a ball joint.

5. The armed swimming assistance device for breaststroke according to claim 4, characterized in that, The water-spraying piston cylinder (50) further includes: a hollow cylinder body (51), a stepped piston rod (52) that can slide up and down inside the cylinder body (51), an upper one-way drain valve (53) and an upper one-way suction valve (54) located on the upper part of the cylinder body (51), and a lower one-way drain valve (55) and a lower one-way suction valve (56) located on the lower part of the cylinder body (51). Among them, the drain ends of the upper one-way drain valve (53) and the lower one-way drain valve (55) face the back of the human body (10), and the water intake ends of the upper one-way water intake valve (54) and the lower one-way water intake valve (56) face the front of the human body (10).

6. The armed swimming assistance device for breaststroke according to claim 5, characterized in that, The T-shaped fixed shaft (31) has a scroll groove (311) with an opening at the bottom at its outer end, and a swing shaft caliper (321) is provided in the middle of the swing shaft (32). The fixed end of the scroll spring (33) is installed in the scroll groove (311), and the moving end of the scroll spring (33) is embedded in the swing shaft caliper (321) through the opening at the bottom of the scroll groove (311).

7. The armed swimming assistance device for breaststroke according to claim 1, characterized in that, The main frame (1) of the I-shaped structure has at least four counterweight floats (20) on the side facing away from the human body (10) to avoid the entire set of power-assisted devices increasing the burden on the wearer when swimming in the water due to their own weight.

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