CN117357859A - Dynamic body-building dumbbell - Google Patents

Abstract

The invention relates to the field of sports fitness, in particular to a dynamic fitness dumbbell, which comprises dumbbell pieces, holding rods, a rotating mechanism and a regulating and controlling mechanism; the two ends of the holding rod are fixedly connected with dumbbell plates respectively, wherein the dumbbell plates are of hollow structures; the rotating mechanism is arranged in the dumbbell piece, the regulating and controlling mechanism is in friction contact with the arc-shaped ball through the friction rod to provide tangential force of the arc-shaped ball, so that the dumbbell body is subjected to irregular shaking under the action of a precession effect, and prestress is set before body building is provided; according to the invention, the prestress is arranged before the exercise is used, and the rotation condition of the rotating mechanism is provided by the mobilizing mechanism, so that when a user uses the exercise, the wrist of the user is combined with the swing of the wrist of the user through the prestress in advance, and the rotating mechanism is continuously accelerated under the action of the precession effect, so that the multidirectional swing in the swing process of the exercise is provided, and the wrist is controlled by the user at any time during the use, so that the aim of body coordination training is fulfilled.

Description

Dynamic body-building dumbbell

Technical Field

The invention relates to the field of exercise auxiliary equipment, in particular to a dynamic exercise dumbbell.

Background

Dumbbell is used as a common device in gymnasiums, and is used for big-base strength training and skill flexibility training; the dumbbell used in gymnastics is usually a small and light instrument, and is different from the weight accumulation of strength training, and the design principle is to exercise all parts of the body through continuous lifting, pushing, pulling, bending and other actions, so that the purposes of enhancing muscle strength and activity and further improving the metabolic rate of the body are achieved.

In gymnastics, the music rhythm is matched to perform aerobic exercise, so that the exercise process is more interesting and rich; current design features of such dumbbells generally include adjustable weight, colored or fluorescent coatings, and shock resistant cushioning outer layers, which make them more stable and safe during use. Meanwhile, the shape and the size of the dynamic dumbbell are also specially designed, so that the dumbbell is easier to grasp and operate, and the convenience and the comfort level of exercise are improved.

For new people who initially enter the gym to perform gym direction training, specific actions are unskilled, partial postures are easy to be wrong or irregular, and under the condition of using the exercises without correction, the problems of unattractive muscle shape and unobvious effect are easy to occur for a long time; also for such dynamic dumbbell, for people who need to burn fat quickly, the exercise can take a long time to preheat in order to make the body enter a better fat burning state.

In order to solve these problems and thereby enhance the auxiliary effects of the dynamic dumbbell, the present invention thus provides a dynamic exercise dumbbell to solve the problems.

Disclosure of Invention

The invention aims to solve the technical problems that: for people with exercise actions not completely mastered, the postures of the dumbbell are not standard when the dumbbell is used, and the dumbbell cannot provide a guiding or auxiliary effect, so that the effect is affected; the use of the dumbbell with dynamic sense is biased to subjective, and the body-building effect is proportional to the proficiency of the user.

In order to solve the technical problems, the invention adopts the following technical scheme: the dumbbell comprises dumbbell pieces, holding rods, a rotating mechanism and a regulating and controlling mechanism; the two ends of the holding rod are fixedly connected with dumbbell plates respectively, wherein the dumbbell plates are of hollow structures; the rotating mechanism is arranged in the dumbbell piece, and is in friction contact with the arc-shaped ball through a friction rod to provide tangential force for the arc-shaped ball, so that the dumbbell body is built to generate irregular shaking under the action of precession effect; the regulating mechanism rotates synchronously with the twisting component through the sliding of the rotating ring.

The rotating mechanism comprises a rotating shaft, a fixed rotating column and an arc-shaped ball; the inner wall of the dumbbell piece is provided with an annular track, two ends of the rotating shaft are clamped in the annular track, the fixed rotating column is fixedly connected to the middle part of the rotating shaft, and the arc-shaped ball is coaxially and fixedly connected with the fixed rotating column; the arc-shaped ball is tangent to the inner wall of the dumbbell piece; the inner wall of the dumbbell piece is provided with a circular opening, and the size of the circular opening is the same as the inner diameter of the holding rod; the friction force of revolution of the rotating shaft around the annular orbit is larger than the friction force of autorotation of the arc-shaped ball; the side wall of arc ball is provided with the recess of circling round, the recess is the shape of circling round, and then the friction lever can pass through the slip joint, because the position change of joint, in the axis of rotation pivoted, the periodic joint of friction lever advances in the recess.

The arc-shaped ball and the rotating shaft are arranged to rotate in two directions, the starting process is that the arc-shaped ball with smaller revolution in the friction force relative to the arc-shaped track rotates firstly by shaking before use and matching with the assistance of a spiral spring, then the dumbbell piece drives the rotating shaft of the arc-shaped ball to swing by continuous shaking in the body-building process, the shaking process is divided into two conditions, the first is that the dumbbell piece is shaking downwards when holding a holding rod, and the rotating shaft of the arc-shaped ball rolls forwards; in this case, since the rotation shaft of the arc-shaped ball is deflected by an external moment, a rotation moment against deflection is generated, and due to this moment, the front end of the rotation shaft is subjected to an upward force, closely attached to the upper edge of the circular rail, and the rear end is subjected to a downward force, closely attached to the lower edge of the circular rail; at this time, when the arc-shaped ball is seen from the right front side, the front end of the rotating shaft is enabled to roll obliquely upwards by being subjected to upward acting force, the friction force drives the rotating shaft to drive the arc-shaped ball to rotate clockwise, if the inclination direction of the annular track is opposite at this time, the rotating shaft can only rotate in an idling mode with the fixed rotating column at the center of the arc-shaped ball by the friction force when the rotating shaft rolls upwards, the arc-shaped ball is not subjected to torque, and therefore the arc-shaped ball can only be accelerated clockwise by unidirectional torque; if the rear face of the arc-shaped ball is observed, the rear face of the rotating shaft is subjected to downward acting force, the arc-shaped ball is driven to rotate anticlockwise by the friction force at the moment along the lower edge of the annular track, and once the inclination directions of the annular track are opposite, the fixed rotating column is driven to idle by the rotating shaft, so that the arc-shaped ball can only accelerate in the starting rotating direction when the arc-shaped ball is thrown downwards.

The second situation is that the rotating shaft of the arc-shaped ball rolls backwards due to upward swing, at the moment, the front end of the aligning force is downward, the rear end is upward, the rotating shaft is clung to the lower edge of the annular track to roll obliquely downwards when being observed from the right front, the arc-shaped ball is still driven to rotate in the same direction, if the annular track changes the inclined direction, the rotating shaft is idle, the rotating shaft is clung to the upper edge of the annular track to roll upwards to drive the arc-shaped ball to rotate anticlockwise and accelerate, the annular track changes the direction, the rotating shaft continuously rotates, so that the friction force always enables the rotating shaft to drive the arc-shaped ball to accelerate continuously, and the higher the rotating speed of the arc-shaped ball is, the larger the turning moment is when the rotating shaft rolls, and the larger acting force is applied to hands through the shell.

The regulating mechanism comprises a twisting assembly, a transmission shell and a spiral spring; one end of the twisting component is clamped with the transmission shell, and the spiral spring is fixedly connected to the lower end of the transmission shell; the inner diameter of the transmission shell is set to be twice as large as the maximum outer diameter of the spiral spring; the twisting component is arranged in mirror image relative to the middle vertical section of the holding rod.

The torsion assembly is arranged in the holding rod and is used for pushing and pulling the clamping ring, the torsion assembly is movably clamped, the torsion assembly is arranged in a mirror image mode relative to the middle section of the holding rod, then the two torsion assemblies can rotate around the central shaft of the holding rod and rotate independently, the torsion assembly transmits force to the transmission shell, the transmission shell is fixedly connected with the side wall of the contact block, the contact block rotates, and the rotating force of the coil spring is provided.

The twisting component comprises a clamping wheel, a transmission shaft, a limiting rod, a cylindrical clamping block, a clamping shaft and a fixed shaft; the clamping wheel is fixedly connected with the transmission shaft in the same axis, the middle part of the transmission shaft is fixedly connected with a limiting rod, the tail end of the transmission shaft is fixedly connected with a cylindrical clamping block, the cylindrical clamping block is movably clamped with the clamping shafts, the number of the clamping shafts is two, the two clamping shafts are coaxially connected in a rotating mode, and a fixed shaft is arranged in the middle of the two clamping shafts and fixedly connected with the rotating ring.

The clamping shaft is mainly used for reducing the rotation friction force of the clamping wheel, the clamping wheel is arranged in a semicircular shape, and the side wall of the clamping wheel is provided with clamping teeth which are clamped with the clamping grooves; simultaneously, the clamping wheel with the draw-in groove joint in the intermediate layer of drive shell, and then will the rotation of clamping wheel is through semi-circular structure for the drive shell intermittent type rotates, coil spring rotates, and intermittent type rotates can be well with the rotation of drive shell promotes slowly, thereby reduces the relatively fast rotational speed that precession effect provided, thereby hurts user's palm.

The limit rods are arranged in 5 and surround the transmission shaft in an annular array; the main purpose of setting the gag lever post to 5 is that after the use, the user can push through the palm both sides of single hand, and then through frictional force, to the arc ball slows down, so the friction lever is in the promotion the effect of arc ball, after the use is finished the friction lever effect becomes the braking.

The holding rod comprises a rotating ring and clamping rings, wherein the two clamping rings are arranged in a coaxial mirror image mode, one end of each clamping ring is provided with limiting grooves which are clamped with limiting rods, the number of the limiting grooves is 5, annular sleeves are arranged at positions which are in contact with the limiting rods, one side of each limiting rod is fixedly connected with a stop block, the stop blocks are clamped with compression springs, and the compression springs are arranged in a plurality of annular arrays around the central shaft of the rotating ring; the number of the limit grooves is the same as that of the limit rods, so that when the rotating ring slides, the twisting mechanism and the holding rod can be synchronized through the clamping connection of the limit rods and the limit grooves, and the use convenience is further provided; meanwhile, when the rotating ring slides, the compression spring can be deformed, the process of applying force to the spiral spring is adopted in the process, after the rotating ring is applied, the rotating ring can be quickly restored to the attached state through elastic force, and then a user can grasp the holding rod.

The transmission shell is a semi-arc-shaped shell, one end far away from the spiral spring is fixedly connected with a limit column, an interlayer is arranged in the middle of the limit column, and a clamping groove which is clamped with the clamping tooth is formed in the inner wall of the interlayer; the transmission shell is a half-arc shell, so that the transmission shell rotates under the action of the limiting rod, the structure of the transmission shell is half-arc, and therefore the rotation of the transmission shell disperses the rotating force to the contact block.

The lower extreme of drive shell and the lateral wall fixed connection of contact block, the lower extreme joint of contact block has coil spring, coil spring joint is in the rolling disc, the other end fixedly connected with friction lever of rolling disc, the friction lever is around rolling disc annular array a plurality of, and the end sets up to the arc, sets up to the arc so that with the one end setting of outside as the bulge form, and then the friction lever can better with the lateral wall contact of arc ball, cyclic rotation to provide tangential force, make the arc ball rotate.

The side wall of the spiral spring is provided with a plurality of rectangular convex blocks, and a rectangular groove clamped with the rectangular convex blocks is formed in the rotating disc; because different applicable crowds are considered in the use process, in the process of twisting the rotating ring, the possibility of overload can appear in the spiral spring, so when the spiral spring rotates, when the friction force of the rotating shaft is overlarge, the spiral spring can be damaged if the spiral spring is continuously rotated under the condition of slow pushing, a rectangular groove is formed, the rectangular clamping block is clamped in the rectangular groove under the condition of no overload, at the moment, the rectangular groove and the rectangular clamping block are used for fixing the spiral spring, when the overload condition appears, a user continuously rotates, the spiral spring can not release the rotating force at the first time, and at the moment, the rectangular clamping block can be separated from the rectangular groove, so that the rotating force outside the overload is buffered, and the damage of the spiral spring is prevented.

The beneficial effects of the invention are as follows:

1. according to the invention, the prestress is arranged before the exercise is used, and the rotation condition of the rotating mechanism is provided by the mobilizing mechanism, so that when a user uses the exercise, the wrist of the user is combined with the swing of the wrist of the user through the prestress in advance, and the rotating mechanism is continuously accelerated under the action of the precession effect, so that the multidirectional swing in the swing process of the exercise is provided, and the wrist is controlled by the user at any time during the use, so that the aim of body coordination training is fulfilled.

2. According to the invention, the friction rod synchronous with the mobilizing mechanism is arranged, and the friction rod transmits force through friction before use, so that the effect of rotating force is provided for the arc-shaped ball, and after use, a user can counteract irregular vibration of the current dumbbell through operation of a single palm, and meanwhile, the limit rod is matched with the limit groove through transmission, so that braking of the dumbbell is realized.

3. The invention provides the quick reset after the rotating ring provides the rotating force of the spiral spring by arranging the compression spring and the stop block which are matched with the twisting mechanism on the inner wall of the rotating ring, thereby improving the conversion rate of the applied kinetic energy, providing more comfortable holding feeling for a user and reducing the probability of the hand-off.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will briefly explain the drawings needed in the embodiments or the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

The above and other aspects of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

FIG. 1 is an overall schematic of the present invention;

FIG. 2 is an overall three-dimensional cross-sectional view of the present invention;

FIG. 3 is an overall two-dimensional cross-sectional view of the present invention;

FIG. 4 is a schematic view of a twist assembly of the present invention;

FIG. 5 is a schematic view of a transmission housing structure according to the present invention;

FIG. 6 is a schematic diagram of an interlayer inner slot structure according to the present invention;

FIG. 7 is a schematic view of the interior of the coil spring of the present invention;

FIG. 8 is a schematic view of the deployment mechanism and arcuate ball contact of the present invention;

FIG. 9 is a schematic view of the mounting position of the mobilizing mechanism of the present invention;

fig. 10 is a schematic view of the rotating ring clamping stop lever of the present invention.

In the figure: 1. dumbbell sheet; 2. a rotating mechanism; 21. an endless track; 22. a rotating shaft; 23. fixing the rotating column; 24. an arc-shaped ball; 25. a circular opening; 3. a grip; 31. a rotating ring; 311. a limit groove; 32. a clamping ring; 4. a regulating mechanism; 41. a twisting assembly; 411. a clamping wheel; 4111. latch teeth; 412. a transmission shaft; 413. a limit rod; 414. a cylindrical clamping block; 415. the clamping shaft; 416. a fixed shaft; 42. a transmission case; 421. a limit column; 422. an interlayer; 423. a clamping groove; 43. a coil spring; 431. a contact block; 432. a rotating disc; 433. a friction lever; 434. rectangular protruding blocks; 435. rectangular grooves.

Detailed Description

In order to better understand the above technical solutions, the following description will refer to the drawings and specific embodiments.

As shown in fig. 1 to 10, a dynamic exercise dumbbell comprises a dumbbell piece 1, a holding rod 3, a rotating mechanism 2 and a regulating and controlling mechanism 4; the dumbbell pieces 1 are fixedly connected to the two ends of the holding rod 3 respectively, wherein the dumbbell pieces 1 are hollow structures; the rotating mechanism 2 is installed in the dumbbell piece 1, the regulating mechanism 4 is in friction contact with the arc-shaped ball 24 through the friction rod 433 to provide tangential force of the arc-shaped ball 24, and then the exercise dumbbell generates irregular shaking under the action of precession effect, and the exercise dumbbell is movably clamped with the cylindrical clamping block 414 through the clamping shaft 415 to provide pre-stress before exercise.

The rotating mechanism 2 is arranged inside the dumbbell piece 1, so that the dumbbell can be more flexible and stable in the movement process, and is not easy to generate excessive shaking, and the stability in use is ensured. Meanwhile, the design of the rotating mechanism 2 also enables the movement track of the dumbbell to be more rich and variable, thereby increasing the interest of exercise; the control mechanism 4 provides tangential force to the dumbbell through frictional contact of the friction lever 433 with the arcuate ball 24. The dumbbell can generate irregular shaking besides the traditional up-and-down movement in the movement process, so that the coordination and balance feeling of a user can be better exercised; the movable clamping design of the clamping shaft 415 and the cylindrical clamping block 414 enables a body builder to preset certain stress before starting exercise, so that tension and relaxation of muscles can be better felt in the exercise process, and a more real and effective exercise experience is provided for the body builder.

As shown in fig. 2 and 3, the rotating mechanism 2 includes a rotating shaft 22, a fixed rotating post 23, and an arc-shaped ball 24; the inner wall of the dumbbell piece 1 is provided with an annular track 21, two ends of the rotating shaft 22 are clamped in the annular track 21, the fixed rotating column 23 is fixedly connected to the middle of the rotating shaft 22, and the arc-shaped ball 24 is fixedly connected with the fixed rotating column 23 in a coaxial manner; the arc-shaped ball 24 is tangent to the inner wall of the dumbbell piece 1; the inner wall of the dumbbell piece 1 is provided with a circular opening 25, and the size of the circular opening 25 is the same as the inner diameter of the holding rod 3; the rotation shaft 22 revolves around the circular orbit 21 with a larger friction than the arc-shaped balls 24 rotate.

As shown in fig. 4, the regulating mechanism 4 includes a twisting assembly 41, a transmission case 42, and a coil spring 43; one end of the twisting component 41 is clamped with the transmission shell 42, and the spiral spring 43 is fixedly connected to the lower end of the transmission shell 42; the inner diameter of the transmission case 42 is set to be twice the maximum outer diameter of the coil spring 43; the twisting assembly 41 is mirror image of the intermediate vertical section of the grip 3.

The twisting component 41 is arranged inside the holding rod 3, the clamping ring 32 is pushed and pulled, the twisting component 41 is movably clamped, the twisting component 41 is arranged in a mirror image mode relative to the middle section of the holding rod 3, then the two rotating rings 31 can rotate around the central shaft of the holding rod 3 and rotate independently, the twisting component 41 transmits force to the transmission shell 42, the transmission shell 42 is fixedly connected with the side wall of the contact block 431, the contact block 431 rotates, and the rotating force of the spiral spring 43 is provided.

As shown in FIG. 5, the inner diameter of the driving housing 42 is set to be twice the maximum outer diameter of the coil spring 43, so that not only can the movement of the coil spring 43 be effectively restricted, but also the space can be utilized to the maximum extent, so that the whole exercise dumbbell is more compact and portable; the twisting assembly 41 is mirror image of the intermediate vertical section of the grip 3, and this design allows the two rotation rings 31 to rotate independently about the central axis of the grip 3. The independence not only enhances the diversity of exercise, but also enables a user to more conveniently adjust the movement direction and angle; by pushing and pulling the snap ring 32, the user can movably snap the twist assembly 41 so that the entire exercise dumbbell is more flexible and handy in use. At the same time, the twisting assembly 41 transmits force to the driving case 42, and the driving case 42 and the side wall of the contact block 431 are fixedly coupled such that the contact block 431 rotates, thereby providing a rotational force to the coil spring 43.

As shown in fig. 4, the twisting assembly 41 includes a clamping wheel 411, a transmission shaft 412, a limit rod 413, a cylindrical clamping block 414, a clamping shaft 415 and a fixing shaft 416; the clamping wheel 411 is fixedly connected with the coaxial center of the transmission shaft 412, the middle part of the transmission shaft 412 is fixedly connected with the limiting rod 413, the tail end of the transmission shaft 412 is fixedly connected with the cylindrical clamping block 414, the cylindrical clamping block 414 is movably clamped with the clamping shafts 415, the number of the clamping shafts 415 is two, and the two clamping shafts 415 are coaxially connected in a rotating mode and provided with the fixing shafts 416 in the middle.

The main purpose of the clamping shaft 415 is to provide a reduction of the rotational friction force of the clamping wheel 411, the clamping wheel 411 is provided with a semicircular shape, and the side wall of the clamping wheel is provided with a clamping tooth 4111 clamped with the clamping groove 423; meanwhile, the clamping wheel 411 is clamped with the clamping groove 423 in the interlayer 422 of the transmission shell 42, so that the transmission shell 42 intermittently rotates due to the semicircular structure by rotating the clamping wheel 411, the spiral spring 43 rotates, and the intermittent rotation can well slowly lift the rotation of the transmission shell 42, so that the faster rotating speed provided by the precession effect is reduced, and the palm of a user is injured.

The limit rods 413 are arranged in 5 and are annularly arrayed around the transmission shaft 412; the main purpose of setting the limit lever 413 to 5 is that after the end of use, the user can push the arc ball 24 by both sides of the palm of one hand and further decelerate the arc ball 24 by friction force, so the friction lever 433 acts as a brake after the end of use in addition to the action of pushing the arc ball 24.

The clamping wheel 411 is fixedly connected with the transmission shaft 412 in the same axis, so that the stability and fluency of rotation are ensured. The middle part fixedly connected with gag lever post 413 of transmission shaft 412 has increased overall structure's intensity and stability. A cylindrical block 414 is fixedly connected to the end of the driving shaft 412, so that the rotation energy of the twisting assembly 41 can be more effectively transmitted. The cylindrical clamping block 414 is movably clamped with the clamping shaft 415, so that the whole assembly has better flexibility to adapt to different use requirements. The two clamping shafts 415 are arranged and connected in a rotating way, and the fixed shaft 416 is arranged in the middle, so that the rotating stability is improved. The fixed shaft 416 is fixedly connected with the rotary ring 31, which provides better balance and stability for the exercise dumbbell.

As shown in fig. 6, the clamping wheel 411 is provided with a semicircular shape, and the side wall is provided with a clamping tooth 4111 clamped with the clamping groove 423, so that the clamping wheel can be better matched with the transmission shell 42 in the rotation process. Meanwhile, the clamping wheel 411 is clamped with the clamping groove 423 in the interlayer 422 of the transmission shell 42, the rotation of the clamping wheel 411 is converted into intermittent rotation of the transmission shell 42 through a semicircular structure, and the spiral spring 43 also rotates. This intermittent rotation effect can advantageously increase the rotational speed of the drive housing 42, allowing it to be slowly increased, thereby reducing the relatively fast rotational speed provided by the precession effect and avoiding injury to the palm of the user.

As shown in fig. 9 and 10, the holding rod 3 includes a rotating ring 31 and a clamping ring 32, the clamping ring 32 is arranged in two and coaxial mirror images, one end of the clamping ring 32 is provided with a limiting groove 311 clamped with a limiting rod 413, the number of the limiting grooves 311 is 5, and then the number of the limiting grooves 311 is the same as that of the limiting rod 413, so that when the rotating ring 31 slides, the twisting mechanism and the holding rod 3 can be synchronized through the clamping connection of the limiting rod 413 and the limiting groove 311, and convenience in use is further provided.

As shown in fig. 7 and 8, the transmission shell 42 is a semi-arc shell, one end far away from the coil spring 43 is fixedly connected with a limiting column 421, an interlayer 422 is arranged in the middle of the limiting column 421, and a clamping groove 423 clamped with a clamping tooth 4111 is formed in the inner wall of the interlayer 422; the transmission case 42 is a semi-arc case, so that the transmission case 42 rotates under the action of the limit rod, and the transmission case 42 is of a semi-arc shape, so that the rotation of the transmission case 42 distributes the rotation force to the contact block 431, and the radius of the rotation block is different from that of the transmission case 42, so that the transmission case is of a semi-arc shape, and the transmission case transmits the force to the coil spring 43, thereby providing a plurality of tangential forces of the friction rod 433 to the arc-shaped ball 24.

The lower extreme of drive shell 42 and the lateral wall fixed connection of contact 431, the lower extreme joint of contact 431 has coil spring 43, coil spring 43 joint is in rolling disc 432, rolling disc 432's the other end fixedly connected with friction lever 433, friction lever 433 is a plurality of around rolling disc 432 annular array, and the end sets up to the arc, sets up to the arc so that with the one end setting of the outside as the bulge form, and then friction lever 433 can better with the lateral wall contact of arc ball 24, cyclic rotation to provide tangential force, make arc ball 24 rotate.

The two clamping rings 32 are arranged in a coaxial mirror image mode, limit grooves 311 are formed in one end of each clamping ring, the number of the limiting grooves is 5, and the number of the limiting grooves is the same as that of the limiting rods 413. The design ensures that when the rotating ring 31 slides, the twisting mechanism and the holding rod 3 are synchronized through the clamping connection of the limiting rod 413 and the limiting groove 311, thereby providing convenience for use; the transmission case 42 is a half arc-shaped case so as to rotate under the action of the limit lever, and at the same time, has a half arc-shaped structure to disperse the rotational force to the contact block 431. Due to the different radii of the turning block and the transmission housing 42, they are arranged in a semi-arc shape, transmitting force to the coil spring 43. The design ensures that the friction rod 433 can provide a plurality of tangential forces for the arc-shaped ball 24, thereby enhancing the body-building effect; the lower extreme of drive shell 42 and the lateral wall fixed connection of contact block 431, the lower extreme joint of contact block 431 has coil spring 43, coil spring 43 joint in rotation dish 432. The other end of the rotating disk 432 is fixedly connected with a friction rod 433, a plurality of the friction rods are annularly arrayed around the rotating disk 432, and the tail ends are arranged in an arc shape. This design allows the outermost end to be configured as a protrusion so that the friction lever 433 can better contact the sidewall of the arcuate ball 24.

As shown in fig. 8, the side wall of the coil spring 43 is provided with a plurality of rectangular protruding blocks 434, and a rectangular groove 435 which is clamped with the rectangular protruding blocks 434 is arranged inside the rotating disk 432; since different applicable people are considered in the use process, in the process of twisting the rotating ring 31, the overload possibility can occur to the spiral spring 43, so when the spiral spring 43 rotates, and when the friction force of the rotating shaft 22 is too large, the spiral spring 43 can be slowly pushed, if the spiral spring 43 continuously rotates, damage can be caused to the spiral spring 43, and therefore, a rectangular groove 435 is formed, under the condition of no overload, the rectangular clamping block is clamped in the rectangular groove 435, at the moment, the rectangular groove 435 and the rectangular clamping block are used for fixing the spiral spring 43, and when the overload condition occurs, the user continuously rotates, and the spiral spring 43 can not release the rotating force at the first time, at the moment, the rectangular clamping block can be separated from the rectangular groove 435, so that the rotating force except the overload is buffered, and the damage of the spiral spring 43 is prevented.

In daily use, the coil spring 43 may be overloaded due to excessive friction due to the difference in the amount of force applied by the individual. When the friction force of the rotation shaft 22 is excessively large, the coil spring 43 may exhibit a slow pushing condition, and if the coil spring 43 is continuously rotated, damage may be caused to the coil spring 43. When an overload condition occurs, the user continues to rotate, but the coil spring 43 cannot release the rotational force for the first time. At this time, the rectangular block is separated from the rectangular groove 435, thereby buffering the rotational force other than the overload, preventing the damage of the coil spring 43. The design not only embodies the characteristics of high efficiency and practicality, but also provides safety guarantee for users in actual use.

In the working process, before the dumbbell is used, the dumbbell needs to be kept still, the rotary ring 31 is pushed to two ends by sliding the rotary ring 31 by the hands of a user, and after the 5 limiting rods 413 are respectively clamped in the limiting grooves 311, the rotation of the rotary ring 31 is transmitted to the friction rod 433 to push the tangential force of the arc-shaped ball 24, and the rotary ring 31 is quickly twisted; after the rotational force is applied, the compression spring is deformed when the rotary ring 31 is slid due to the presence of the stopper at this time, and when the application is stopped, the palm of the pressing force is released, and the two rotary rings 31 rebound rapidly.

The other end of the transmission shaft 412 rotates synchronously with the clamping wheel 411, the clamping wheel 411 is in a semicircular structure and is clamped in the interlayer 422 of the transmission shell 42, the rotating force of the transmission shell 42 is transmitted to the spiral spring 43 through the transmission of the contact block 431, the rotating disc 432 is further rotated, the friction rod 433 contacts with the arc-shaped ball 24, the friction rod 433 is clamped in the groove, the friction rod 433 drives the arc-shaped ball to rotate through continuous rotation, and due to the arc-shaped structure, after one friction rod 433 is separated from the groove, the friction rod 433 is clamped in later, and due to the fact that the radius is set to be half of the circular opening 25, the contact position of the friction rods 433 and the arc-shaped ball 24 is the tangential position of the outermost side of the arc-shaped cut, and the contact position of the friction rod 433 and the arc-shaped ball 24 is the center of the center shaft of the transmission shell 42; the friction lever 433 provides a multidirectional tangential force, the friction force of revolution is greater than the rotation force, the arc ball 24 is continuously twisted before use, the arc ball 24 is gradually accelerated, after the arc ball is accelerated to a certain degree, the rotation ring 31 is quickly retracted by a user, the force provided by the user stops at the moment, the arc ball 24 rotates under the residual force of the spiral spring 43 through the transient rotating force given by the spiral spring 24, the rotating mechanism 2 continuously rotates under the action of the precession effect, the limiting rod 413 is separated from the clamping groove, the limiting rod 413 continuously rotates under the action of the clamping shaft 415, the limiting rod 413 is separated from the limiting groove 311, the limiting rod 413 rotates between the annular gap between the clamping ring 32 and the rotation ring 31 when the user holds the holding rod 3, the limiting rod 413 continuously provides the rotating conditions of the arc ball 24 and the rotation shaft 22 along with the melody of the body building operation, and further provides a continuous acting force, after the use is finished, the limiting rod 413 continuously moves under the action of the stopping ring 415, or the palm of the palm is stopped by the action of the external force, the limiting rod 311 is stopped by the movement of the palm, so that the limiting rod 311 is provided.

The description herein is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A dynamic body-building dumbbell comprises a dumbbell piece (1) and a holding rod (3); dumbbell pieces (1) are fixedly connected to two ends of the holding rod (3) respectively, wherein the dumbbell pieces (1) are of hollow structures; the method is characterized in that: the device also comprises a rotating mechanism (2) and a regulating mechanism (4); the rotating mechanism (2) is arranged in the dumbbell piece (1), and the rotating mechanism (2) is in friction contact with the arc-shaped ball (24) through a friction rod (433) to provide continuous tangential force of the arc-shaped ball (24), so that the arc-shaped ball (24) rotates under the action of precession effect; the regulating mechanism (4) provides rotating force for the rotating mechanism (2) in the process of being movably clamped with the limiting rod (413) through sliding of the rotating ring (31), and regulates the arc-shaped ball (24) through the twisting component (41).

2. The dynamic exercise dumbbell of claim 1, wherein: the rotating mechanism (2) comprises a rotating shaft (22), a fixed rotating column (23) and an arc-shaped ball (24); the dumbbell comprises a dumbbell body and is characterized in that an annular track (21) is arranged on the inner wall of the dumbbell body (1), two ends of a rotating shaft (22) are clamped in the annular track (21), a fixed rotating column (23) is fixedly connected to the middle of the rotating shaft (22), and an arc-shaped ball (24) is fixedly connected with the fixed rotating column (23) in a coaxial mode; the arc-shaped ball (24) is tangent with the inner wall of the dumbbell piece (1); the inner wall of the dumbbell piece (1) is provided with a circular opening (25), and the size of the circular opening (25) is the same as the inner diameter of the holding rod (3); the friction force of revolution of the rotating shaft (22) around the annular orbit (21) is larger than the friction force of autorotation of the arc-shaped ball (24); the side wall of the arc-shaped ball (24) is provided with a rotary groove.

3. The dynamic exercise dumbbell of claim 1, wherein: the regulating mechanism (4) comprises a twisting assembly (41), a transmission shell (42) and a spiral spring (43); one end of the twisting component (41) is clamped with the transmission shell (42), and the spiral spring (43) is fixedly connected to the lower end of the transmission shell (42); the inner diameter of the transmission shell (42) is set to be twice the maximum outer diameter of the spiral spring (43); the twisting component (41) is arranged in mirror image relative to the middle vertical section of the holding rod (3).

4. A dynamic exercise dumbbell according to claim 3, wherein: the transmission shell (42) is a semi-arc shell, one end far away from the spiral spring (43) is fixedly connected with a limiting column (421), an interlayer (422) is arranged in the middle of the limiting column (421), and a clamping groove (423) clamped with the clamping tooth (4111) is formed in the inner wall of the interlayer (422).

5. A dynamic exercise dumbbell according to claim 3, wherein: the twisting assembly (41) comprises a clamping wheel (411), a transmission shaft (412), a limiting rod (413), a cylindrical clamping block (414), a clamping shaft (415) and a fixing shaft (416); the clamping wheel (411) is fixedly connected with the coaxial center of the transmission shaft (412), the middle part of the transmission shaft (412) is fixedly connected with a limiting rod (413), the tail end of the transmission shaft (412) is fixedly connected with a cylindrical clamping block (414), the cylindrical clamping block (414) is clamped with clamping shafts (415), the number of the clamping shafts (415) is two, and the two clamping shafts (415) are connected in a rotating mode and clamped in a fixing shaft (416).

6. A dynamic exercise dumbbell according to claim 3, wherein: the lower extreme of drive shell (42) and the lateral wall fixed connection of contact block (431), the lower extreme joint of contact block (431) has coil spring (43), coil spring (43) joint is in rolling disc (432), the other end fixedly connected with friction lever (433) of rolling disc (432), friction lever (433) are a plurality of around rolling disc (432) annular array, and the end sets up to the arc, the recess joint on friction lever (433) and arc ball (24) surface.

7. The dynamic exercise dumbbell of claim 6, wherein: the side wall of the spiral spring (43) is provided with a plurality of rectangular protruding blocks (434), and a rectangular groove (435) clamped with the rectangular protruding blocks (434) is formed in the rotating disc (432).

8. The dynamic exercise dumbbell of claim 5, wherein: the clamping wheel (411) is arranged in a semicircular shape, and the side wall of the clamping wheel is provided with clamping teeth (4111) which are clamped with the clamping grooves (423).

9. The dynamic exercise dumbbell of claim 5, wherein: the limit rods (413) are arranged in 5 annular arrays and surround the transmission shaft (412).

10. The dynamic exercise dumbbell of claim 5, wherein: the holding rod (3) comprises a rotating ring (31) and a clamping ring (32), the clamping rings (32) are arranged in two coaxial mirror images, and an annular sleeve is arranged at a position contacted with the limiting rod (413); one end of the clamping ring (32) is provided with limiting grooves (311) which are clamped with the limiting rods (413), and the number of the limiting grooves is 5; one side of the limiting rod (413) is fixedly connected with a stop block, the stop block is clamped with a compression spring, and the compression spring is annularly arrayed around the central shaft of the rotating ring.