Blade structure for rowing machine

Abstract

The utility model belongs to the field of body builder design, and discloses a paddle structure for a rowing machine. Comprising a supporting frame body, a seat is connected to the supporting frame body in a sliding mode, the seat slides in a reciprocating mode in the length direction of the supporting frame body, a water resistance box and a transmission part which transmits motion to a sporter through the water resistance box are further fixedly connected to the supporting frame body, and a springback handheld structure which is used for being held by the sporter is arranged on the transmission part. An angle-adjustable paddle assembly is connected in the water resistance box; one end of the rotating shaft is connected with the rear cover of the water resistance box, and the other end of the rotating shaft is connected with the transmission part; the rotating shaft is connected with an angle adjustable structure; the angle adjustable structure is connected with the paddle, and the inclination angle of the paddle is adjusted and locked. Therefore, the angle of the paddle is adjusted, the water resistance in the water resistance box is changed, and then the load of the rowing machine is changed.

Description

Technical Field

[0001] The utility model belongs to the field of fitness equipment design and is a paddle blade structure used for a 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. Utility Model Content

[0004] The purpose of the utility model is to provide a blade structure with adjustable angle, and to adjust the resistance by rotating the blade angle.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a paddle structure for a rowing machine, comprising a support frame, a seat slidably connected to the support frame, the seat reciprocatingly sliding along the length direction of the support frame, a water resistance box and a transmission part that transmits motion to an athlete through the water resistance box are fixedly connected to the support frame, a resilient handheld structure for the athlete to hold is provided on the transmission part, and an angle-adjustable paddle assembly is connected inside the water resistance box;

[0006] The blade assembly includes a rotating shaft connected to the rear cover of the water resistance box at one end and to the transmission part at the other end; the rotating shaft is connected to an angle-adjustable structure; the angle-adjustable structure is connected to the blade to adjust and lock the blade tilt angle, thereby adjusting the blade angle, changing the water resistance in the water resistance box, and then changing the rowing machine load.

[0007] Further, according to the utility model, the angle adjustable structure comprises a first bevel gear set sleeved on the rotating shaft;

[0008] 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;

[0009] A second bevel gear meshing with the first bevel gear is provided at one end of the blade. The bevel gear has stable motion transmission and a large number of teeth, thereby achieving stable adjustment of the blade angle and locking, and avoiding changes in the load caused by changes in the blade position during movement.

[0010] Further, according to the utility model, 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;

[0011] 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.

[0012] According to the utility model, further, the side surface of the first bevel gear is provided with circumferentially distributed slots, and a limiting tooth is coaxially connected to the side close to the third bevel gear, and the number of teeth of the limiting tooth corresponds to the number of slots; a shift fork is connected to the limiting tooth, and the locking and separation of the limiting tooth and the slot are achieved by shifting the shift fork.

[0013] Furthermore, according to the utility model, 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 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.

[0014] Furthermore, according to the utility model, 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, thereby improving the convenience of injecting water into the water resistance box.

[0015] Furthermore, according to the utility model, the blade rotation angle range is 0°-360°.

[0016] Furthermore, according to the utility model, the blades are arranged in multiple groups, each group of blades has at least one blade, and are symmetrically arranged about the axis of the rotating shaft.

[0017] The beneficial effects brought by the utility model are as follows: the blades are connected through the angle-adjustable structure, the inclination angle of the blades is adjusted and locked, thereby achieving the adjustment of the blade angle, changing the water resistance in the water resistance box, and then changing the load of the rowing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a paddle structure for a rowing machine according to the utility model;

[0019] Figure 2 for Figure 1 AA cross-sectional structural diagram;

[0020] Figure 3 It is an axonometric schematic diagram of a paddle blade structure for a rowing machine of the utility model;

[0021] Figure 4 It is a schematic diagram of the connection between the limiting tooth and the first bevel gear of the utility model.

[0022] Among them, 100-support frame, 200-seat, 300-water resistance box, 310-rotary locking switch, 311-knob, 312-connecting rod, 3121-water injection hole, 313-third bevel gear, 400-transmission part, 500-handheld structure, 600-pedal part, 700-rotating shaft, 710-first bevel gear set, 711-first bevel gear, 7111-slot, 712-long connecting shaft, 720-second bevel gear set, 721-short connecting shaft, 800-blade, 810-second bevel gear, 900-limiting tooth, 910-fork. DETAILED DESCRIPTION

[0023] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods 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 each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] The utility model provides a paddle blade structure for a rowing machine, such as Figure 1 and Figure 3 As shown, it includes a support frame 100, which is in an elongated shape. A seat 200 is slidably connected to the support frame 100. Footrests 600 are connected on both sides of the seat 200. The footrests 600 do not contact the ground. The seat 200 performs reciprocating sliding motion along the length direction of the support frame 100. A water resistance box 300 and a transmission part 400 that transmits motion to the athlete through the water resistance box 300 are also fixedly connected to the support frame 100. A resilient handheld structure 500 for the athlete to hold is provided on 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 handheld structure 500 with his hands, pulls the handheld structure 500, and leans back. The athlete's buttocks drive the seat 200 to slide toward the water resistance box 300. The handheld structure 500 relies on the resilience of its own elastic structure 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.

[0025] In order to increase the water resistance and meet the load requirements of different athletes, a rotating shaft 700 is provided 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 back 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 includes at least one blade symmetrically arranged about the axis of the rotating shaft 700 .

[0026] 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 housing of the water resistance box 300. The top of the rotation locking switch 310 is located above the housing of the water resistance box 300. The top of the rotation locking switch 310 has a knob 311, and the bottom of the knob 311 is connected to a connecting rod 312. The connecting rod 312 is provided with a third bevel gear 313 that can mesh with the first bevel gear 711. The knob 311 rotates left and right to drive the connecting rod 312 to rotate. 1 moves up and down along its axis. When the connecting rod 31 moves downward, the third bevel gear 313 meshes with the first bevel gear 711 and continues to rotate, which drives the first bevel gear 711 connected to the short connecting shaft 721 to rotate, and then drives the blade 800 to rotate through the first bevel gear set 710, and locks the rotated angle. The rotation angle range is 0°-360°. Through the change of 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.

[0027] like Figure 4 As shown, in order to keep the adjusted angle unchanged and fixed in position, the side surface of the first bevel gear 711 is provided with circumferentially distributed slots 7111, and a limiting tooth 900 is coaxially connected to the side close to the third bevel gear 313. The number of teeth of the limiting tooth 900 corresponds to the number of slots 7111. After the first bevel gear 711 rotates to the desired angle, the limiting tooth 900 is inserted into the slot 7111 to achieve locking of the rotated angle. A shift fork 910 is connected to the limiting tooth 900, and the locking and separation of the limiting tooth 900 and the slot 7111 are achieved by shifting the shift fork 910.

[0028] Furthermore, if Figure 2 As shown, 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 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 the water injection of 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.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A paddle structure for a rowing machine, comprising a support frame, a seat slidably connected to the support frame, the seat reciprocatingly sliding along the length direction of the support frame, a water resistance box and a transmission part that transmits motion to an athlete through the water resistance box are fixedly connected to the support frame, and a resilient handheld structure for the athlete to hold is provided on the transmission part, characterized in that: The water resistance box is connected with an angle-adjustable blade assembly; The blade assembly 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 the blade to adjust and lock the blade tilt angle.

2. A paddle structure for a rowing machine according to claim 1, 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.

3. A paddle structure for a rowing machine as claimed in claim 2, 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.

4. A paddle structure for a rowing machine as claimed in claim 3, characterized in that: The side surface of the first bevel gear is provided with circumferentially distributed slots, and a limiting tooth is coaxially connected to the side close to the third bevel gear, and the number of teeth of the limiting tooth corresponds to the number of slots; a shift fork is connected to the limiting tooth, and the locking and separation of the limiting tooth and the slot are achieved by shifting the shift fork.

5. A paddle structure for a rowing machine as claimed in claim 4, 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. The bottom of the knob is connected to a connecting rod. The connecting rod is provided with a third bevel gear that can mesh with the first bevel gear. The knob drives the connecting rod to move up and down along its axis by rotating left and right.

6. A paddle structure for a rowing machine as claimed in claim 5, 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.

7. A paddle structure for a rowing machine as claimed in claim 1, characterized in that: The blade rotation angle range is 0°-360°.

8. A blade structure for a rowing machine according to any one of claims 1 to 4 and 7, characterized in that: The blades are arranged in multiple groups, each group of blades has at least one blade, and are symmetrically arranged about the axis of the rotating shaft.

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