Water resistance rowing machine

Abstract

The invention belongs to the field of fitness equipment design, and discloses a water resistance rowing machine which comprises a water resistance box fixedly arranged at one end of a sliding way. An adjustable paddle structure is arranged in the water resistance box; the transmission part is connected with the adjustable paddle structure; the transmission part comprises a wheel disc, a connecting shaft is arranged in the center of the wheel disc, and one end of the connecting shaft is coaxially connected with the adjustable paddle structure in the water resistance box; the belt is wound on the periphery of the wheel disc and is a poly V-belt, and correspondingly, an annular groove connected with the poly V-belt in a matched mode is formed in the periphery of the wheel disc; one end of the springback handheld structure is fixedly connected with one end of the belt; the adjustable paddle structure adjusts the resistance of the water resistance box through the paddle angle, and the resistance is transmitted to the springback handheld structure through the transmission part. The adjustable paddle structure is used for adjusting the load, the load is changed when the elastic belt is pulled, and a sporter can adjust the rotation angle of the paddle according to the training intensity of the sporter. Transmission is stable, and the service life is prolonged.

Description

Technical Field

[0001] The invention belongs to the field of fitness equipment design and is a water resistance rowing machine. Background Art

[0002] The water resistance rowing machine, also known as the water resistance rowing machine, is a type of rowing machine. It has a water tank. When the athlete exercises, it can simulate the real rowing method, allowing the athlete to truly feel that he is rowing. It has a more obvious effect on strengthening the muscles of the legs, waist, upper limbs, chest, and back.

[0003] The water tank is provided with paddles. The existing water resistance rowing machine changes the maximum resistance of the water resistance rowing machine by increasing or decreasing the number of paddles. At the same time, the volume of the water tank will also change accordingly. Summary of the invention

[0004] The purpose of the present invention is to provide a water-resistance rowing machine with an angle-adjustable fixed blade structure, which can adjust the load according to the needs of athletes and improve the application range of the rowing machine.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the present invention is as follows: A water resistance rowing machine, comprising: a water resistance box, fixedly arranged at one end of the slideway; an adjustable blade structure is arranged inside the water resistance box;

[0006] A transmission part connected to the adjustable blade structure; the transmission part includes:

[0007] A wheel disc, a connecting shaft is arranged at the center of the wheel disc, one end of the connecting shaft is coaxially connected to the adjustable blade structure in the water resistance box;

[0008] A belt is wound around the outer periphery of the wheel disc, wherein the belt is a poly-V belt, and correspondingly, an annular groove is provided on the outer periphery of the wheel disc to cooperate with the poly-V belt;

[0009] A resilient handheld structure, one end of which is fixedly connected to one end of the belt;

[0010] The adjustable blade structure adjusts the resistance of the water resistance box through the blade angle, and transmits the resistance to the resilient handheld structure through the transmission part.

[0011] According to the present invention, further, it also includes a slide, a seat that reciprocates along the length direction of the slide, and footrests fixedly arranged on both sides of the slide for athletes to step on with their feet during exercise.

[0012] According to the present invention, further, the resilient handheld structure includes a hollow tube body and a handholding portion arranged outside the hollow tube body, an elastic belt is arranged in the hollow tube body, one end of the elastic belt is fixedly connected to the handholding portion, and the other end is fixedly connected to one end of the belt.

[0013] According to the present invention, further, the adjustable blade structure includes a rotating shaft with one end connected to the rear cover of the water resistance box and the other end connected to the transmission part; the rotating shaft is connected to an angle adjustable structure; the angle adjustable structure is connected to a blade to adjust and lock the inclination angle of the blade.

[0014] According to the present invention, further, the angle adjustable structure comprises a first bevel gear set mounted on the rotating shaft;

[0015] The first bevel gear set includes a first bevel gear and a long connecting shaft, the long connecting shaft is sleeved on the outer circumference of the rotating shaft, both ends of the long connecting shaft are connected to the first bevel gear, and the outer circumference of the first bevel gear set is connected to the blade;

[0016] One end of the blade is provided with a second bevel gear meshing with the first bevel gear.

[0017] According to the present invention, further, the angle adjustable structure also includes a second bevel gear set, which is arranged at one end of the rotating shaft close to the rear cover of the water resistance box;

[0018] The second bevel gear set includes a short connecting shaft and first bevel gears connected to both ends of the short connecting shaft, and the length of the short connecting shaft is shorter than that of the long connecting shaft.

[0019] According to the present invention, further, it also includes a rotary locking switch arranged in the shell of the water resistance box, the top of the rotary locking switch is located above the shell of the water resistance box, the top of the rotary locking switch has a knob, and the bottom of the rotary tightening switch is provided with a third bevel gear meshing with the first bevel gear connected to the short connecting shaft through a connecting rod.

[0020] According to the present invention, further, the rotating shaft is a round shaft, and two oppositely arranged keyways extending along its length direction are arranged on its outer circumference. Accordingly, a sleeve is arranged on the outer circumference of the rotating shaft, and the inner wall of the sleeve has a protrusion matching the keyway, so as to realize the matching connection between the rotating shaft and the sleeve. The round shaft structure is convenient for production and processing, improves processing efficiency, and reduces costs.

[0021] According to the present invention, further, the connecting rod is a hollow structure and a segmented structure, and the connecting rod has a water injection hole that passes through from top to bottom.

[0022] According to the present invention, further, the rotation angle range of the blade is 0°-360°.

[0023] The beneficial effects of the present invention are: adjusting the blade angle according to the load required by the athlete, thereby adjusting the resistance of the water resistance box to meet the needs of athletes with different requirements for resistance.

[0024] The transmission part of the present invention adopts a multi-V belt and a wheel with an annular groove matched therewith, which improves the stability of the transmission motion of the transmission part, avoids the belt and the wheel from being separated during the transmission process, improves the stability of the transmission motion, and increases the service life of the water resistance rowing machine.

[0025] The present invention adopts a bevel gear set structure, which makes the blade angle adjustment more precise and has a wider application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of a water resistance rowing machine according to the present invention from a first perspective;

[0027] Figure 2 A schematic diagram of a water-resistance rowing machine (excluding an aquarium and a transmission housing) of the present invention;

[0028] Figure 3 It is a schematic structural diagram of a water resistance rowing machine according to the present invention from a second viewing angle;

[0029] Figure 4 It is a partial reference schematic diagram of the belt of the present invention;

[0030] Figure 5 This is a schematic diagram for reference of the roulette wheel of the present invention.

[0031] Among them, 100-support frame, 110-slide, 120-support, 121-friction pad, 122-pulley, 200-seat, 300-water resistance box, 310-rotation locking switch, 311-knob, 312-connecting rod, 3121-water injection hole, 313-third bevel gear, 400-transmission part, 500-handheld structure, 510-hollow tube body, 520-handheld part, 530-elastic belt, 600-pedal part, 700-rotating shaft, 710-first bevel gear set, 711-first bevel gear, 712-long connecting shaft, 720-second bevel gear set, 721-short connecting shaft, 800-blade, 810-second bevel gear. DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] The present invention provides a water resistance rowing machine, such as Figure 1-Figure 3As shown, it includes a support frame 100, which is in an elongated shape. A slide 110 is provided on the support frame 100, and a seat 200 is slidably connected to the slide 110. The support frame 100 is also fixedly connected to a footrest portion 600, and the footrest portion 600 includes foot pedals located on the left and right sides of the support frame 100. When exercising, the athlete sits on the seat 200, and steps on the foot pedals on the corresponding sides to avoid contact between the feet and the ground. The athlete holds the handheld portion 520, which will be described in detail below, and as the handheld portion 520 is pulled, the seat 200 is driven to slide along the slide 110, thereby achieving the purpose of exercising arm strength.

[0034] The support frame 100 is also fixedly connected to the water resistance box 300 and the transmission part 400 for transmitting motion, and the resistance of the water resistance box 300 is applied to the athlete through the transmission part 400. The transmission part 400 is provided with a resilient handheld structure 500 for the athlete to hold; the resilient handheld structure 500 includes a hollow tube body 510 and a handheld part 520 arranged outside the hollow tube body 510. The hollow tube body 510 is preferably a hollow square tube; an elastic band 530 is arranged in the hollow tube body 510, one end of the elastic band 530 is fixedly connected to the handheld part 520, and the other end passes through the hollow cavity of the hollow tube body 510 and is connected to the transmission part 400. The water resistance box 300 is filled with liquid. The athlete sits on the seat 200 with both feet on the footrests 600 on the corresponding sides. The athlete holds the hand-held part 520 with his hands, pulls the hand-held part 520, and leans back. The elastic belt 530 is stretched under the pulling force of the athlete. The athlete's buttocks drive the seat 200 to slide toward the water resistance box 300. The elastic belt 530 rebounds by its own elastic force to pull the athlete's upper body toward the water resistance box 300. The buttocks drive the seat 200 to move away from the water resistance box 300 along the length direction of the support frame 100, thereby achieving a reciprocating training.

[0035] like Figure 2 , 4 As shown in Figure 5, the transmission part 400 includes a wheel 410 and a belt 420 wound around the outer periphery of the wheel 410, one end of the belt 420 is fixedly connected to the elastic belt 530; the connecting shaft connected to the center of the wheel 410 is connected to the rotating shaft 700 in the water resistance box 300, so as to realize the connection between the transmission part 400 and the blade adjustment structure in the water resistance box 300. Preferably, the belt 420 is a poly-V belt, specifically, the teeth are arranged in parallel along the length direction of the belt, and correspondingly, the grooves on the outer periphery of the wheel 410 are annular grooves, and a plurality of grooves are distributed along the outer peripheral surface of the wheel 410 along its axial direction, and the annular grooves of the wheel 410 and the teeth of the belt 420 are meshed. Compared with the existing synchronous belt, the poly-V belt cooperates with the wheel 410 to make the transmission of the transmission part stable and it is not easy for the wheel 410 to shake left and right in the axial direction.

[0036] Furthermore, a support 120 is provided at the bottom of the support bracket 100. There are two supports 120, which are respectively located on both sides of the length direction of the support bracket 100. Because the rowing machine is heavy, in order to avoid friction with the placement surface and cause wear of the placement surface, a friction pad 121 is provided at the bottom of the support 120 to prevent the support 120 from directly contacting the placement surface. During exercise, the athlete can reduce the friction of the support 120 on the placement surface and reduce damage to the placement surface.

[0037] In order to facilitate the movement and transportation of the rowing machine, a pulley 122 is provided on the top surface or near the top surface of the support 120. The pulley 122 can be one, and preferably, the pulleys 122 are used in pairs for the convenience of dragging. When in use, the other end of the support bracket 100 is lifted to make the pulley 122 contact the ground, and the support bracket 100 is pulled to make the pulley 122 slide on the ground, driving the support bracket 100 to move, which saves time and effort in transportation.

[0038] In order to increase water resistance and adapt to the load requirements of different athletes, such as Figure 5 As shown, a rotating shaft 700 is disposed in the water resistance box 300 , one end of the rotating shaft 700 is connected to the transmission part 400 , and the other end is connected to the rear cover of the water resistance box 300 . The outer periphery of the rotating shaft 700 is provided with a first bevel gear set 710 and a second bevel gear set 720. The second bevel gear set 720 is one and is arranged at one end of the rotating shaft 700 close to the rear cover. The first bevel gear set 710 is arranged between the second bevel gear set 720 and the transmission part 400. The first bevel gear set 710 includes a first bevel gear 711 and a long connecting shaft 712. The long connecting shaft 712 is a hollow structure with the first bevel gear 711 connected to both ends. The outer periphery of the bevel gear set 710 is connected to a blade 800. A second bevel gear 810 meshing with the first bevel gear 711 is arranged at one end of the blade 800. The second bevel gear set 720 includes a short connecting shaft 721 and a first bevel gear 711 connected to both ends of the short connecting shaft 721. The length of the short connecting shaft 721 is shorter than that of the long connecting shaft 712. Preferably, the blades 800 are arranged in three groups, and each group of blades consists of two blades symmetrically arranged about the axis of the rotating shaft 700 .

[0039] In the embodiment of the present application, the rotating shaft 700 is a round shaft for easy processing. Two oppositely arranged keyways extending along the length direction are arranged on the outer periphery of the rotating shaft 700. Correspondingly, a sleeve is arranged on the outer periphery of the rotating shaft 700. The inner wall of the sleeve has a protrusion matching the keyway, thereby realizing the mating connection between the rotating shaft 700 and the sleeve. The relative position of the rotating shaft 700 and the sleeve will not change during the rotation process, thereby improving the accuracy of adjusting the blades.

[0040] In order to facilitate the adjustment of the rotation angle of the first bevel gear set 710 and the second bevel gear set 720, a rotation locking switch 310 is connected to the shell of the water resistance box 300, and the top of the rotation locking switch 310 is located above the shell of the water resistance box 300. The top of the rotation locking switch 310 is provided with a knob 311, and the bottom of the rotation tightening switch 310 is provided with a third bevel gear 311 meshing with the first bevel gear 711 connected to the short connecting shaft 721 through a connecting rod 312. The knob 311 is rotated to drive the first bevel gear 711 connected to the short connecting shaft 721 to rotate through the third bevel gear 311, and then the blade 800 is driven to rotate through the first bevel gear set 710, and the angle after rotation is locked. The rotation angle range is 0°-360°. By changing the angle of the blade 800, the resistance of the liquid in the water resistance box 300 is increased, thereby adjusting the load of the water resistance box 300.

[0041] Furthermore, the connecting rod 312 of the rotary locking switch 310 is a hollow structure and a segmented structure. The upper section is sleeved on the outer periphery of the lower section. The connecting rod 312 has a water injection hole 3121. When water injection is needed, the connecting rod 312 is pulled upward, and the third bevel gear 311 is disengaged from the first bevel gear 711 connected to the short connecting shaft 721. The bottom of the connecting rod 312 is passed through, and water is injected into the water resistance box 300 through the water injection hole 3121. The water enters the water resistance box 300 through the bottom of the connecting rod 312 to realize water injection into the water resistance box 300. After the water is injected, the connecting rod 312 is pushed downward to make the third bevel gear 311 mesh with the first bevel gear 711 connected to the short connecting shaft 721.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A water resistance rowing machine, characterized in that: include: A water resistance box is fixedly arranged at one end of the slideway; an adjustable blade structure is arranged inside the water resistance box; A transmission part connected to the adjustable blade structure; the transmission part includes: A wheel disc, a connecting shaft is arranged at the center of the wheel disc, and one end of the connecting shaft is coaxially connected to the adjustable blade structure in the water resistance box; A belt is wound around the outer periphery of the wheel disc, wherein the belt is a poly-V belt, and correspondingly, an annular groove is provided on the outer periphery of the wheel disc to cooperate with the poly-V belt; A resilient handheld structure, one end of which is fixedly connected to one end of the belt; The adjustable blade structure adjusts the resistance of the water resistance box through the blade angle, and transmits the resistance to the resilient handheld structure through the transmission part.

2. A water resistance rowing machine as claimed in claim 1, characterized in that: The utility model also comprises a slide, a seat which reciprocates along the length direction of the slide, and footrests which are fixedly arranged on both sides of the slide and are used for athletes to step on with their feet during exercise.

3. A water resistance rowing machine as claimed in claim 1, characterized in that: The resilient handheld structure comprises a hollow tube body and a handheld portion arranged outside the hollow tube body, an elastic belt is arranged in the hollow tube body, one end of the elastic belt is fixedly connected to the handheld portion, and the other end is fixedly connected to one end of the belt.

4. A water resistance rowing machine as claimed in claim 1, characterized in that: The adjustable blade structure includes a rotating shaft with one end connected to the rear cover of the water resistance box and the other end connected to the transmission part; the rotating shaft is connected to an angle adjustable structure; the angle adjustable structure is connected to a blade to adjust and lock the blade tilt angle.

5. A water resistance rowing machine as claimed in claim 4, characterized in that: The angle adjustable structure comprises a first bevel gear set sleeved on the rotating shaft; The first bevel gear set includes a first bevel gear and a long connecting shaft, the long connecting shaft is sleeved on the outer circumference of the rotating shaft, both ends of the long connecting shaft are connected to the first bevel gear, and the outer circumference of the first bevel gear set is connected to the blade; One end of the blade is provided with a second bevel gear meshing with the first bevel gear.

6. A water resistance rowing machine as claimed in claim 5, characterized in that: The angle adjustable structure further comprises a second bevel gear set, which is arranged at one end of the rotating shaft close to the rear cover of the water resistance box; The second bevel gear set includes a short connecting shaft and first bevel gears connected to both ends of the short connecting shaft, and the length of the short connecting shaft is shorter than that of the long connecting shaft.

7. A water resistance rowing machine as claimed in claim 1 or 6, characterized in that: It also includes a rotary locking switch arranged on the shell of the water resistance box, the top of the rotary locking switch is located above the shell of the water resistance box, the top of the rotary locking switch is provided with a knob, and the bottom of the rotary tightening switch is provided with a third bevel gear meshing with the first bevel gear connected to the short connecting shaft through a connecting rod.

8. A water resistance rowing machine as claimed in claim 4, characterized in that: The rotating shaft is a round shaft, and two oppositely arranged keyways extending along its length direction are arranged on its outer circumference. Correspondingly, a sleeve is arranged on the outer circumference of the rotating shaft, and the inner wall of the sleeve has a protrusion matching the keyway to realize the matching connection between the rotating shaft and the sleeve.

9. A water resistance rowing machine as claimed in claim 7, characterized in that: The connecting rod is a hollow structure and a segmented structure, and the connecting rod has a water injection hole that passes through from top to bottom.

10. The water resistance rowing machine according to claim 5, characterized in that: The rotation angle range of the blade is 0°-360°.

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