CN219595735U - Rotary resistance exercise device - Google Patents

Abstract

The utility model discloses a rotary resistance exercise device, and belongs to the technical field of exercise equipment. The utility model comprises an exercise device body, the exercise device body comprises an elongated handle, an elongated element and a fin module, the two ends of the elongated handle are respectively provided with a first handle end and a second handle end, a coupler is arranged in the elongated handle, the elongated element is connected to the coupler, the elongated element comprises a first end and a second end, the first end of the elongated element is connected to the coupler, a plurality of fin modules are arranged on the elongated element, each fin module comprises at least three resistance fins, the fin modules are provided with axial through holes, the resistance fins are arranged around the central axis of the axial through holes, the radial length of each resistance fin is not more than 7 inches, and a fastening device is arranged at one end of the elongated element close to the second end. The utility model has the advantages of rich functions, good exercise effect and safer use.

Description

Rotary resistance exercise device

Technical Field

The utility model relates to the technical field of exercise equipment, in particular to a rotary resistance exercise device.

Background

Aerobic regulation and strength training are very important for maintaining physical well-being, jump ropes can provide excellent aerobic exercises and strength construction, jump ropes' rotational resistance exercises can provide high intensity upper body training, however, jump ropes allow only a few limited arm exercises, which limits the number of muscles and joints that can participate in and benefit from rotational resistance exercises, and furthermore, jump ropes can only perform limited lower limb exercises; furthermore, learning rope skipping is not easy, which has led to the development of rope skipping simulators, replacing a single rope with two separate hand-held rotating members and other rotational resistance devices that can be used in pairs; these devices can be divided into several categories, some flexible rope skipping simulators, where each hand-held unit typically includes a handle attached to one end of a rope or an elongated member, and an optional object secured to the other end, such as a tassel, badminton or ball, other flexible rope skipping simulators including rope loops, however, these flexible devices provide limited rotational resistance exercise, another category of rope simulators including rotating weighted elements, but which may hit and injure a person when rotated, and another category of semi-rigid rotational resistance exercise devices, which require a rigid mechanism to maintain the angle between the handle and the rotating portion so that the latter does not hit the user, but are cumbersome and limited to use, none of which truly simulate rope skipping rotational resistance movement, especially rope skipping air resistance and weight resistance balance.

Another type of rotational resistance apparatus is designed to improve a user's swing in a particular sport, such as golf, baseball or tennis, which includes a shaft and uses relatively large air resistance fins or blades of weight or near distal end to provide resistance, by definition, the shaft maintains its generally straight shape and is rigid, or it is at least substantially rigid, having some curvature during the user's swing, which has its own shaft or connection to an athletic equipment, such as a baseball bat or golf club, rigid shaft-based rotational resistance apparatus may be useful for enhancing strength and improving a particular swing motion, rigid shaft, and large air resistance fins, while being effective for performing a personal swing, but not suitable for continuous rotational motion and its aerobic, strength, high strength training and endurance benefits, and therefore, a rotational resistance exercise apparatus is needed to address the above-mentioned problems.

Disclosure of Invention

Aiming at the technical defects, the utility model aims to provide the rotating resistance exercise device which is reasonable in structure, rich in functions and good in exercise effect, so as to solve the problems in the background technology.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a rotary resistance exercise device, which comprises an exercise device body, wherein the exercise device body comprises an elongated handle, an elongated element and fin modules, the two ends of the elongated handle are respectively provided with a first handle end and a second handle end, a coupler is arranged in the elongated handle, the elongated element is connected to the coupler, the elongated element comprises a first end and a second end, the first end of the elongated element is connected to the coupler, the fin modules are arranged on the elongated element, and a fastening device is arranged at one end, close to the second end, of the elongated element.

As an improvement, the fin module comprises at least three resistance fins, wherein the fin module is provided with an axial through hole, and the resistance fins are arranged around the central axis of the axial through hole.

As an improvement, the fin module comprises at least three resistance fins, and the fin module comprises an attachment device, wherein the attachment device is provided with an axial through hole.

As an improvement, the attachment device comprises two connecting blocks, wherein the two connecting blocks are arranged in parallel, and the connecting blocks are hub-shaped.

As an improvement, the attachment means comprises a cylinder, which is cylindrical.

As an improvement, the fastening device comprises a fastening body provided with a receiving hole and a fastening screw.

As an improvement, the fastening device comprises a fastening bolt and a fastening nut, wherein the fastening bolt is provided with a receiving hole.

As a modification, the radial length of the resistance fins is no greater than 7 inches.

The utility model has the beneficial effects that:

1. the first end of the slender element is connected to the rotatable connector arranged on the slender handle, the slender element can be driven to rotate together when the slender handle is rotated, a plurality of fin modules are arranged on the slender element, the rotation resistance is increased, one fin module comprises three or more resistance fins, and the fin modules and the number of the resistance fins can be adjusted according to practical conditions.

2. The fin module provided by the utility model is mainly of three types, one type is a fin module which does not comprise an attachment device, an axial through hole is formed in the fin module, a resistance fin is arranged around the central axis of the axial through hole, an elongated element passes through the axial through hole, and a plurality of fin modules are arranged on the elongated element; the other is a fin module comprising an attachment device, the resistance fin is connected to the attachment device, the attachment device is provided with an axial through hole, the slender element passes through the axial through hole, and the two types of fin modules can freely rotate on the slender element; the last resistance fin is directly bonded to the elongated element and cannot rotate on the elongated element.

3. The fastening device provided by the utility model is mainly divided into two types, wherein one fastening device comprises a fastening body, a receiving hole and a fastening screw are arranged on the fastening body, one end of the slender element near the second end penetrates through the receiving hole, and the fastening screw can fasten the slender element in place; another type of fastening device comprises a fastening bolt provided with a receiving hole through which an end of the elongated element near the second end is threaded, and a fastening nut screwed onto the fastening bolt until the elongated element is secured in place between the two parts, both types of fastening devices being capable of securing the elongated element against removal of the fin module from the elongated element.

4. The exercise device body of the present utility model is safe to use, the elongated members and the attached fin modules and resistance fins are free to rotate, the elongated members are flexible materials, the exercise device body is lightweight and can be made of soft materials with rounded resistance fins and edges, rotating a pair of exercise device bodies forms a somewhat V-shaped pattern, the exercise device body is kept a safe distance from the user's head, the lightweight design can exercise for a long period of time, and premature fatigue of the arms is not caused.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a first embodiment of a rotational resistance exercise device according to the present utility model.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a cross-sectional view taken along the direction 4-4 in fig. 2.

Fig. 4 is a bottom view of fig. 1.

Fig. 5 is a side view of a first embodiment of a rotational resistance exercise device of the present utility model.

Fig. 6 is a cross-sectional view taken along the direction 8-8 in fig. 5.

Fig. 7 is a schematic diagram of a second embodiment of a rotational resistance exercise device according to the present utility model.

Fig. 8 is a schematic diagram of a third embodiment of a rotational resistance exercise device according to the present utility model.

Fig. 9 is an enlarged schematic view of portion 11 of fig. 8.

Fig. 10 is a schematic view of the fin module structure of fig. 8.

Fig. 11 is a schematic diagram of a fifth embodiment of a rotational resistance exercise device according to the present utility model.

Fig. 12 is an enlarged partial schematic view of a rotational resistance exercise device according to the present utility model.

Fig. 13 is a schematic view of a fastening device of a rotation resistance exercise device according to the present utility model.

Fig. 14 is a schematic view of an attachment device for a rotational resistance exercise device according to the present utility model.

Fig. 15 is a schematic diagram of an attachment device for a rotational resistance exercise device according to the present utility model.

Fig. 16 is a schematic view showing a structure of a sixth embodiment of a rotation resistance exercise device according to the present utility model.

Reference numerals illustrate:

20. an exercise device body; 21. a first handle end; 22. an elongated handle; 23. a second handle end; 24. an elongated element; 26. a first end; 28. a second end; 30. resistance fins; 32. a coupler; 34. a fin module; 36. an axial through hole; 38. a fastening device; 40. an attachment device; 42. a fastener body; 44. a receiving hole; 46. a fastening screw; 48. a fastening bolt; 50. and (5) fastening the nut.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly stated or limited otherwise, the terms "provided with," "mounted to," "connected to," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-16, the present utility model has the following embodiments:

example 1:

as shown in fig. 1-6, the present embodiment has no attachment means 40, the resistance fins 30 are adhered to the elongated member 24, the resistance fins 30 and the elongated member 24 are made as one body, the present utility model provides a rotary resistance exercise device comprising an exercise device body 20, the exercise device body 20 comprising an elongated handle 22, the elongated member 24 and a fin module 34, the elongated handle 22 being provided with a first handle end 21 and a second handle end 23 at each end, the first handle end 21 and the second handle end 23 being cylindrical, the elongated handle 22 being made of different materials including wood, rubber, flexible plastic or other materials or combinations of materials, the elongated handle 22 having different shapes, as shown in fig. 3, one elongated handle 22 comprising a hollow portion, one open end and one closed end, and having an opening at the closed end for connecting the elongated member 24; the other elongate handle 22 has two closed ends with a cavity for receiving the coupler 32; a coupler 32 is provided within the elongate handle 22, the coupler 32 comprising a ball bearing assembly or a looped, crimped fastener having a diameter wider than the width of the handle opening, the coupler 32 having the elongate member 24 attached thereto, at least a portion of the elongate member 24 being flexible, the elongate member 24 comprising a first end 26 and a second end 28, the first end 26 of the elongate member 24 being rotatably attached to the coupler 32, the elongate member 24 having a plurality of resistance fins 30 mounted thereon, the resistance fins 30 being lightweight, having rounded edges and corners, and being constructed of a soft or semi-soft material, including rubber, foam rubber, plastic, flexible plastic, leather, and combinations of different materials, the resistance fins 30 being disposed about a central axis of the elongate member 24, the radial length of the resistance fins 30 being no greater than 7 inches, each 2 inches by 2 inches.

Example 2:

as shown in fig. 7, which is provided with an attachment means 40, the resistance fin 30 is adhered to the elongated member 24 by the attachment means 40, the present utility model provides a rotary resistance exercise device comprising an exercise device body 20, the exercise device body 20 comprising an elongated handle 22, an elongated member 24 and a fin module 34, the elongated handle 22 being provided with a first handle end 21 and a second handle end 23 at both ends thereof, respectively, the first handle end 21 and the second handle end 23 being cylindrical, the elongated handle 22 being made of different materials including wood, rubber, flexible plastic or other materials or combinations of materials, the elongated handle 22 having different shapes, as shown in fig. 3, one elongated handle 22 comprising a hollow portion, one open end and one closed end, and having an opening at the closed end for connecting the elongated member 24; the other elongate handle 22 has two closed ends with a cavity for receiving the coupler 32; a coupler 32 is provided within the elongate handle 22, the coupler 32 comprising a ball bearing assembly or a beaded fastener having a diameter wider than the width of the handle opening, the coupler 32 having the elongate member 24 attached thereto, at least a portion of the elongate member 24 being flexible, the elongate member 24 comprising a first end 26 and a second end 28, the first end 26 of the elongate member 24 being rotatably attached to the coupler 32, the elongate member 24 having a plurality of resistance fins 30 mounted thereon, the resistance fins 30 being adhered to the elongate member 24 by attachment means 40, the attachment means 40 comprising two connecting blocks arranged in parallel, the connecting blocks being hub-shaped, the resistance fins 30 being lightweight, having rounded edges and corners and being formed of a soft or semi-soft material comprising rubber, foamed rubber, plastic, flexible plastic, leather and a combination of different materials, the resistance fins 30 being arranged about the central axis of the elongate member 24, the radial length of the resistance fins 30 being no greater than 7 inches, each being 2 inches by 2 inches.

Example 3:

as shown in fig. 8-10, the fin module 34 of this embodiment is free of the attachment means 40, the fin module 34 is not directly adhered to the elongated member 24, the fastening means 38 is required, the fin module 34 is rotatable on the elongated member 24, the present utility model provides a rotational resistance exercise device comprising an exercise device body 20, the exercise device body 20 comprising an elongated handle 22, the elongated member 24 and the fin module 34, the elongated handle 22 being provided with a first handle end 21 and a second handle end 23 at each end, the first handle end 21 and the second handle end 23 being cylindrical, the elongated handle 22 being made of different materials including wood, rubber, flexible plastic or other materials or combinations of materials, the elongated handle 22 having different shapes, as shown in fig. 3, one elongated handle 22 comprising a hollow portion, one open end and one closed end, and having an opening at the closed end for connecting the elongated member 24; the other elongate handle 22 has two closed ends with a cavity for receiving the coupler 32; the elongate handle 22 has a coupler 32 disposed therein, the coupler 32 comprising a ball bearing assembly or a band-turn fastener having a diameter wider than the width of the handle opening, the coupler 32 having an elongate member 24 attached thereto, at least a portion of the elongate member 24 being flexible, the elongate member 24 comprising a first end 26 and a second end 28, the first end 26 of the elongate member 24 being rotatably attached to the coupler 32, the elongate member 24 having a plurality of fin modules 34 mounted thereon, the fin modules 34 comprising at least three joined together resistance fins 30, the resistance fins 30 being light weight, having rounded edges and corners and being formed of a soft or semi-soft material, including rubber, foam rubber, plastic, flexible plastic, leather, and combinations of different materials, the fin modules 34 having an axial through-hole 36 disposed about the central axis of the axial through-hole 36, the elongate member 24 having a fastening means 38 mounted at an end thereof adjacent the second end 28, one fastening means 38 comprising a fastener body 42 having a receiving hole 44 and a fastening screw 46, the other fastening means 38 comprising a fastening screw 48 and a fastening nut 50, the fastening screw 48 having a receiving hole 44, the fastening screw 48 having a radial resistance of no more than about 2 inches per inch of the length of the fin 30.

Example 4:

as shown in fig. 12-15, the fin module 34 of this embodiment is provided with an attachment means 40, the fin module 34 is not directly adhered to the elongated member 24, a fastening means 38 is required, the fin module 34 is rotatable on the elongated member 24, the present utility model provides a rotation resistance exercise device comprising an exercise device body 20, the exercise device body 20 comprising an elongated handle 22, the elongated member 24 and the fin module 34, the elongated handle 22 being provided with a first handle end 21 and a second handle end 23 at each end, the first handle end 21 and the second handle end 23 being cylindrical, the elongated handle 22 being made of different materials including wood, rubber, flexible plastic or other materials or combinations of materials, the elongated handle 22 having different shapes, as shown in fig. 3, one elongated handle 22 comprising a hollow portion, one open end and one closed end, and having an opening at the closed end for connecting the elongated member 24; the other elongate handle 22 has two closed ends with a cavity for receiving the coupler 32; the elongate handle 22 has a coupler 32 disposed therein, the coupler 32 comprising a ball bearing assembly or a band-turn-around fastener having a diameter wider than the width of the handle opening, the coupler 32 having an elongate member 24 attached thereto, at least a portion of the elongate member 24 being flexible, the elongate member 24 comprising a first end 26 and a second end 28, the first end 26 of the elongate member 24 being rotatably attached to the coupler 32, the elongate member 24 having a plurality of fin modules 34 mounted thereon, the fin modules 34 comprising at least three connected together resistance fins 30, the resistance fins 30 being light in weight, having rounded edges and corners and being formed of a soft or semi-soft material, comprising a combination of rubber, foam rubber, plastic, flexible plastic, leather and a different material, the fin modules 34 comprising at least three connected together resistance fins 30, the fin modules 34 comprising attachment means 40, the attachment means 40 comprising two attachment pieces disposed in parallel, the attachment means being hub-shaped, the attachment means 40 comprising a cylinder being cylindrical, the attachment means 40 having an axial through hole 36 disposed thereon, the resistance fins 30 being disposed about the central axis of the axial through hole 36, the elongate member 24 having a fastening means 38 having a fastening means of the other one end 48 of the two fastener receiving the radial fastener elements 38, the two fastener elements 38 being disposed adjacent the second end 28, the fastening means being provided with a radial fastener means 48, the fastening means being provided with a fastener means 48 having a fastener receiving the two fastener means 48 inches, the fastener means being provided at the two fastener means 48, and being provided at the fastener means 50, and having a fastening means being provided, and each of one fastener means being provided at each of one and having a fastener means being provided at 2, and having a fastening means and a fastening means, and being provided at each of one and having a fastening means being provided at 2, and having a fastening means and having fastener, and being provided at 2, and having fastener, and being provided.

Example 5:

as shown in FIG. 11, according to the above embodiment, the present embodiment elongate member 24 comprises a plurality of elongate segments joined together, typically end-to-end, the elongate segments comprising portions of the elongate member 24 containing attached resistance fins 30 and releasable connectors at both ends of the segments, including snaps, fasteners, hook and loop fasteners, and other connection means, which allow the elongate segment with resistance fins 30 to be disconnected from one exercise device body 20, connected to the second end 28 of the elongate member 24 of another exercise device body 20, and formed into a longer length exercise device body 20.

Example 6:

as shown in FIG. 16, according to the above embodiments, it is desirable that the longer exercise device body 20 include a longer elongated handle 22 and elongated member 24, as well as more fin modules 34.

In the practice of the present utility model, a user holds the elongate handle 22 of the resistance exercise device body 20 with at least one hand, the elongate member 24 is connected to the connector 32 by the connector 32 provided in the elongate handle 22, the elongate member 24 is of flexible material, the user rotates the elongate member 24 together when rotating the elongate handle 22, a plurality of fin modules 34 are mounted on the elongate member 24, one fin module 34 comprises at least three resistance fins 30, the resistance fins 30 extend outwardly and are generally symmetrical at least along the longitudinal axis of the elongate member 24, when the fin modules 34 are not directly adhered to the elongate member 24, the body of the exercise device is rotated, the elongate member 24 passes through the axial through holes 36 of the fin modules 34, or through the axial through holes 36 of the attachment means 40 on the fin modules 34, the elongate handle 22 rotates the elongate member 24, thereby bringing the resistance fins 30 into rotation together, the elongated element 24 and the attached resistance fins 30 encounter an air resistance which is generally balanced on either side of the longitudinal axis of the elongated element 24, which balanced air resistance rotates about the longitudinal axis and produces a substantially continuous level of resistance and weight resistance of the resistance exercise device body 20, for exercise purposes, the elongated element 24 and the attached resistance fins 30 need to be symmetrical to provide balanced resistance or lateral stability about the longitudinal axis, in use the number and size of the resistance fins 30 on the fin module 34 can be adjusted as the case may be, providing different resistance levels, in which case fastening means 38 need to be used, the fastening means 38 being primarily of two types, one of which the fastening means 38 comprises a fastener body 42, the fastener body 42 being provided with a receiving aperture 44 and a fastening screw 46, passing an end of the elongated member 24 proximate the second end 28 through the receiving aperture 44, a tightening screw 46 may tighten the elongated member 24 into place; another type of fastening device 38 includes a fastening bolt 48 and a fastening nut 50, the fastening bolt 48 having a receiving hole 44, the end of the elongated member 24 adjacent the second end 28 being threaded through the receiving hole 44, the fastening nut 50 being threaded onto the fastening bolt 48 until the elongated member 24 is secured in place between the two components, both types of fastening devices 38 being capable of securing the elongated member 24 to prevent the fin module 34 from being removed from the elongated member 24; one is that the resistance fins 30 are directly bonded to the elongated member 24 and cannot rotate on the elongated member 24, but can also provide a greater resistance to rotation for exercise.

The working principle of the utility model is as follows:

the exercise device body 20 provides resistance exercises for the arms and upper body for strength construction, muscle conditioning, rehabilitation exercises and aerobic exercises, and when combined with lower limb exercises, provides whole body exercises, the exercise device body 20 helps to improve endurance, agility and flexibility, the exercise device body 20 provides weight resistance and air resistance, with emphasis on air resistance, and the exercise device body 20 provides a large amount of rotational resistance for exercises even at medium rotational speeds.

The exercise apparatus body 20 is shorter in length, performs high-intensity rotation, it also becomes a pair of uses, provides the same resistance as a jump rope, including the same weight and air resistance, the exercise apparatus body 20 is used for various exercises and purposes, the exercise apparatus body 20 is shorter in length, provides freedom of movement, and allows various arm and upper body exercises to be performed, and provides resistance and aerobic exercise for whole body exercises in combination with various types of lower body exercise methods; when the length of exercise device body 20 is longer, it is held with one or both hands, where exercise device body 20 is used to rotate horizontally overhead, vertically sideways or in front, rotate crisscross and all angles therebetween, providing more strength building, more emphasis on resistance to movement and less emphasis on aerobic movement, but legs and cores still participate and exercise vigorously to provide general exercise; when used in pairs, exercise device body 20 provides a user at all levels of fitness with excellent aerobic exercises without crossing the cord limits, exercise device body 20 provides a variety of exercise possibilities, performing different arm and upper body exercises, exercise device body 20 is used with arms out, forward, high shoulder or overhead, arms move together, or each arm performs different movements, one arm rotates on the user's side and one arm rotates on the overhead, a series of rotational movements is performed, from rotating only the wrist to rotating the forearm, to moving the entire arm in a large circular movement, exercise device body 20 is combined with almost any lower body exercise method, including various jumping, walking in place, squatting, bowing and some foot movements without leaving the floor, and other lower body movements, and furthermore, the user can use it while standing or sitting, exercise device body 20 is easy to learn and use.

The exercise device body 20 is portable and used in a variety of locations, including at home, at a fitness center, in a classroom, or while walking or running, the exercise device body 20 provides unique general exercises including strength training, high intensity training, and aerobic adjustment, the exercise device body 20 provides a wide range of exercise motions and is interesting to use, the exercise device body 20 provides a wide range of intensity levels and is effective for achieving high levels of physical well-being, the exercise device body 20 provides unique rotational resistance exercises, increasing people's strength, endurance, and fitness effects.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (8)

1. A rotational resistance exercise device comprising an exercise device body (20), characterized in that: the exercise device body (20) comprises an elongated handle (22), an elongated element (24) and fin modules (34), wherein a first handle end (21) and a second handle end (23) are respectively arranged at two ends of the elongated handle (22), a coupler (32) is arranged in the elongated handle (22), the elongated element (24) is connected to the coupler (32), the elongated element (24) comprises a first end (26) and a second end (28), the first end (26) of the elongated element (24) is connected to the coupler (32), a plurality of fin modules (34) are arranged on the elongated element (24), and a fastening device (38) is arranged at one end, close to the second end (28), of the elongated element (24).

2. The rotational resistance exercise device of claim 1 wherein: the fin module (34) comprises at least three resistance fins (30), an axial through hole (36) is formed in the fin module (34), and the resistance fins (30) are arranged around the central axis of the axial through hole (36).

3. The rotational resistance exercise device of claim 1 wherein: the fin module (34) comprises at least three resistance fins (30), the fin module (34) comprises an attachment device (40), and an axial through hole (36) is arranged on the attachment device (40).

4. A rotational resistance exercise device according to claim 3 wherein: the attachment device (40) comprises two connection blocks, wherein the two connection blocks are arranged in parallel, and the connection blocks are hub-shaped.

5. A rotational resistance exercise device according to claim 3 wherein: the attachment device (40) comprises a cylinder, which is cylindrical.

6. The rotational resistance exercise device of claim 1 wherein: the fastening device (38) comprises a fastener body (42), wherein a receiving hole (44) and a fastening screw (46) are arranged on the fastener body (42).

7. The rotational resistance exercise device of claim 1 wherein: the fastening device (38) comprises a fastening bolt (48) and a fastening nut (50), wherein the fastening bolt (48) is provided with a receiving hole (44).

8. A rotational resistance exercise device according to claim 2 or 3, wherein: the radial length of the resistance fins (30) is no greater than 7 inches.