CN114247104B - Wrist strength ball safe in utilization - Google Patents
Wrist strength ball safe in utilization Download PDFInfo
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- CN114247104B CN114247104B CN202111438062.7A CN202111438062A CN114247104B CN 114247104 B CN114247104 B CN 114247104B CN 202111438062 A CN202111438062 A CN 202111438062A CN 114247104 B CN114247104 B CN 114247104B
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/12—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles
- A63B23/14—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles for wrist joints
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/12—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/12—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles
- A63B23/16—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for upper limbs or related muscles, e.g. chest, upper back or shoulder muscles for hands or fingers
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B43/00—Balls with special arrangements
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Manipulator (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to the technical field of training equipment, in particular to a wrist strength ball safe to use, which comprises a shell, a sliding groove, a rotating shaft, a ball core, a flexible piece, an induction device, a speed reducing device and a detection device, wherein if the speed reducing device is in standby, the detection device detects that the rotating speed of the ball core is greater than or equal to a preset value, and when the induction device induces the pulling of the flexible piece, the speed reducing device is switched to a first state; if the speed reducer is switched to the first state, the detection device detects that the rotating speed of the ball core is smaller than a preset value, and the speed reducer is switched to the second state; if the speed reducer is in standby, the detection device detects that the rotating speed of the ball core is smaller than a preset value, or the sensing device does not sense that the flexible piece is pulled, and the speed reducer is in standby. The invention mainly solves the problem that the wrist power ball is easy to damage a human body or the wrist power ball after being taken off the hand.
Description
Technical Field
The invention relates to the technical field of training equipment, in particular to a wrist strength ball safe to use.
Background
The wrist power ball is a manual power device, is purely mechanical, and drives a ball core to rotate at a high speed by the rotation of a wrist so as to generate strong power; the strong strength generated by the high-speed rotation of the wrist power ball is very helpful for exercising the strength and toughness of fingers, wrists and arms, and the wrist power ball integrates sports, entertainment and fitness into a whole.
However, in the prior art, when a user trains with the wrist power ball, the centrifugal force of the wrist power ball is increased, and the possibility of separating from the hand of the user exists, and after the wrist power ball is separated from the hand, the wrist power ball falls to the ground and is easy to damage; aiming at the problem, the solution of the prior art is to add an annular rope to the wrist power ball, and the rope is sleeved on the wrist of the human body, so that the damage to the wrist power ball caused by falling off the wrist power ball is avoided; however, the wrist ball with the rope is easy to contact the human body when the wrist ball falls off the hand, and the human body is damaged.
Disclosure of Invention
In order to solve the technical problem, the invention provides a wrist strength ball which is safe to use.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a wrist ball with safe use comprises
The device comprises a shell, a first fixing piece and a second fixing piece, wherein a window is formed on the shell;
the sliding chute is arranged on the inner side of the shell;
the rotating shaft is in a straight cylinder shape, two ends of the rotating shaft extend into the sliding grooves, and the rotating shaft slides along the sliding grooves;
the ball core is arranged on the rotating shaft, rotates around the axis of the rotating shaft and at least partially extends out of the window;
the flexible piece extends into the shell, and at least part of the flexible piece is annular;
the sensing device is connected with the flexible piece;
the speed reducer can be switched between a first state and a second state, the speed reducer slows down the rotating speed of the ball core in the first state, and the speed reducer does not influence the rotating speed of the ball core in the second state;
the detection device can measure the rotating speed of the ball core;
if the speed reducer is in the first state, the detection device detects that the rotating speed of the ball core is smaller than a preset value, and the speed reducer is switched to the second state; if the speed reducer is in the second state, the detection device detects that the rotating speed of the ball core is greater than or equal to the preset value, and the sensing device senses that the flexible piece is pulled, the speed reducer is switched to the first state; if the speed reducer is in the second state, the detection device detects that the rotating speed of the ball core is smaller than the preset value, or the sensing device does not sense that the flexible piece is pulled, and the speed reducer is still in the second state.
Preferably, the reduction means comprises
The friction piece can move between a first position and a second position, the friction piece is located at the first position and contacts the ball core, and the friction piece is located at the second position and is far away from the ball core;
a rod connected to the friction member and capable of being attracted by magnetic force;
the first electromagnet is arranged in the shell, and the friction piece is driven to a second position by the attraction rod when the first electromagnet is electrified;
one end of the first elastic piece is connected with the friction piece, the other end of the first elastic piece is connected in the shell, and the first elastic piece drives the friction piece to a first position.
Preferably, the reduction gear further comprises
The clamping rod can extend into the friction piece and lock the friction piece positioned at the second position;
one end of the second elastic piece is connected with the clamping rod, and the other end of the second elastic piece is connected in the shell;
the second electromagnet is arranged in the shell and corresponds to the clamping rod;
the magnetic force can attract the clamping rod, when the second electromagnet is electrified to enable the clamping rod to be separated from the friction piece, the first elastic piece drives the friction piece to the first position, and when the first electromagnet is electrified to enable the friction piece to the second position, the second elastic piece drives the clamping rod to stretch into the friction piece.
Preferably, the first elastic member is a first biasing spring, and the second elastic member is a second biasing spring.
Preferably, the sensing means comprises
The first induction plate is connected with the flexible piece;
the second induction plate is positioned in the shell;
wherein, the first tablet of flexible piece pulling makes first tablet and second tablet contact.
Preferably, the sensing device further comprises
And one end of the third elastic piece is connected with the first induction plate, the other end of the third elastic piece is connected in the shell, and the third elastic piece is positioned between the first induction plate and the second induction plate.
Preferably, the third elastic member is a third biasing spring.
Preferably, the detection means comprises
The magnet is arranged on the ball core;
the Hall sensor is arranged at the center of the bottom wall of the shell;
wherein, the hall sensor can sense that the magnet is close to.
Preferably, the wrist ball further comprises
The chassis is installed in the casing bottom, and hall sensor installs on the chassis, and decelerator also installs on the chassis.
Preferably, the flexible member is a cord.
Compared with the prior art, the invention has the following beneficial effects:
compared with the wrist force ball in the prior art, the wrist force ball has the advantages that after the wrist force ball is taken off the hand, the speed of the ball core can be reduced spontaneously, so that the centrifugal force of the ball core is reduced, namely, the damage to a human body caused by collision of the wrist force ball and the human body is reduced. And the starting requirement of the ball core deceleration function is limited, so that when a user uses the wrist power ball, the deceleration function of the wrist power ball is prevented from being started due to failure.
Drawings
FIG. 1 is a front view of the wrist ball of the present invention;
FIG. 2 is a front cross-sectional view of the wrist ball of the present invention;
fig. 3 is an internal structural view of the reduction gear;
FIG. 4 is an enlarged schematic view at A in FIG. 3;
fig. 5 is an enlarged schematic view of fig. 2 at B.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 2, a wrist ball 100 for safety use includes a housing 11, a shaft 12, and a core 13. The housing 11 has a substantially spherical shape, and the housing 11 includes an upper housing 111 and a lower housing 112, the upper housing 111 having a window 1111 formed therein, and the upper housing 111 being mounted on the lower housing 112 to form the housing 11. The spherical shape of the housing 11 facilitates grasping thereof by the hand of the user and prevents the wrist ball 100 from being released and damaging the wrist ball 100. As an implementation manner, the housing 11 may have other shapes such as a rectangular parallelepiped, a cube, a cone, and the like. The casing 11 is wrapped by a protective layer 113, and the protective layer 113 at least covers the joint of the upper casing 111 and the lower casing 112, so that the connection strength of the upper casing 111 and the lower casing 112 is enhanced, that is, the rigidity between the upper casing 111 and the lower casing 112 is enhanced, and the rigidity of the wrist ball 100 is improved. The protective layer 113 is made of rubber and has elasticity, so that the protective layer 113 can be conveniently sleeved on the wrist ball 100, and the protective layer 113 can be stably wrapped on the wrist ball 100 through elasticity. As an implementation, the protection layer 113 may also be made of other materials having elasticity. The upper housing 111 is mounted on the lower housing 112, and a sliding groove 114 is further formed, wherein a portion of the sliding groove 114 is located on the upper housing 111, the rest of the sliding groove 114 is located on the lower housing 112, the sliding groove 114 is located inside the housing 11, and the sliding groove 114 is annular. The slot 114 defines a plane that is substantially parallel to the plane defined by the window 1111 to facilitate user control of the core 13. As one implementation, the plane formed by the chute 114 may be non-parallel to the plane formed by the window 1111. As one implementation, the chute 114 may be located within the upper housing 111, or the chute 114 may be located within the lower housing 112. The rotating shaft 12 is substantially in the shape of a straight cylinder, one end of the rotating shaft 12 extends into the sliding slot 114, and the other end of the rotating shaft 12 also extends into the sliding slot 114. When one end of the rotating shaft 12 slides along the sliding slot 114, that is, the end of the rotating shaft 12 rotates in the circumferential direction. The other end of the rotating shaft 12 also slides along the sliding slot 114, and the other end of the rotating shaft 12 also rotates along the circumferential direction, so as to drive the rotating shaft 12 to rotate. As one implementation, bearings are disposed on both ends of the rotating shaft 12, the outer ring of the bearing contacts the inner wall of the sliding groove 114, and the inner ring of the bearing is connected to the rotating shaft 12. The bearing can reduce the resistance encountered when the rotating shaft 12 slides along the sliding groove 114, thereby reducing the friction loss of the rotating shaft 12, also reducing the friction loss of the sliding groove 114, and improving the service life of the wrist power ball 100. The core 13 is rotatably connected to the shaft 12, i.e., the core 13 is rotatable about the shaft 12. Install balancing weight 131 on the core 13, balancing weight 131 can increase the gross weight of wrist power ball 100, and balancing weight 131 can increase the gross weight of core 13, increase the inertia of core 13 promptly to be favorable to increasing the centrifugal force that produces when wrist power ball 100 rotates, thereby improve the load to the hand, thereby reinforcing training effect. As an implementation mode, the rotating shaft 12 is provided with a bearing, the outer ring of the bearing is in contact with the ball core 13, the inner ring of the bearing is connected with the rotating shaft 12, and the bearing can reduce the resistance encountered when the ball core 13 rotates around the rotating shaft 12, so that the friction loss to the rotating shaft 12 is reduced, the friction loss to the ball core 13 is also reduced, and the service life of the wrist strength ball 100 is prolonged. At least part of the core 13 extends out of the window 1111, so that a user can conveniently contact the core 13, and the user can manually drive the core 13 to rotate. As one implementation, the core 13 may be located entirely within the housing 11, i.e., the core 13 does not extend outside of the window 1111, thereby facilitating protection of the core 13.
Referring to fig. 2 to 5, the wrist ball 100 further includes a reduction gear 14, a detection device 15, a sensing device 16, and a string 17. The speed reducing device 14 can be switched between a first state and a second state, when the speed reducing device 14 is in the first state, the rotating speed of the ball core 13 can be reduced, when the speed reducing device 14 is in the second state, the speed reducing device 14 stops running, namely, the speed reducing device 14 stops reducing the rotating speed of the ball core 13, the detection device 15 can detect the rotating speed of the ball core 13, the rope 17 extends into the shell 11, and the sensing device 16 can sense the strong pulling force applied to the rope 17. When the detecting device 15 detects that the rotating speed of the ball core 13 is greater than or equal to the predetermined value and the sensing device 16 senses that the rope 17 is subjected to strong tension, the speed reducing device 14 is switched to the first state, so that the rotating speed of the ball core 13 is reduced. After the speed reducer 14 is switched to the first state, when the detector 15 detects that the rotation speed of the ball core 13 is less than the predetermined value, the speed reducer 14 is switched to the second state. When the speed reducer 14 is in the second state, the detecting device 15 detects that the rotating speed of the ball core 13 is less than the predetermined value, or the sensing device 16 does not sense that the rope 17 is under the strong pulling force, the speed reducer 14 is still in the second state. It will be appreciated that the predetermined value is 3000 revolutions per minute. As an implementation, the predetermined value may also be set to other values.
Referring to fig. 2 to 4, an opening is formed on the lower housing 112, the opening is located at the bottom of the lower housing 112, a chassis may be installed at the bottom of the lower housing 112, and the chassis is installed on the lower housing 112 to close the opening of the lower housing 112. The reduction gear 14 is arranged on the chassis, the reduction gear 14 is positioned at the center of the chassis, and the reduction gear 14 is positioned in the shell 11. The reduction gear 14 includes a friction member 141 and a first biasing spring 143, the friction member 141 being capable of contacting the core 13 and reducing the speed of the core 13, the first biasing spring 143 biasing the friction member 141 so that the friction member 141 contacts the core 13. The friction member 141 can move in parallel between a first position and a second position, and when the friction member 141 moves to the first position, that is, the friction member 141 approaches the core 13 until the friction member 141 contacts the core 13, and when the friction member 141 moves to the second position, the friction member 141 does not contact the core 13 at all. The friction layer 132 is arranged on the ball core 13, the friction layer 132 is sleeved on the ball core 13, the friction layer 132 is annular, and the diameter of the annular formed by the friction layer 132 is basically the same as that of the ball core 13. When the wrist ball 100 rotates, the core 13 rotates around the rotating shaft 12, the rotating shaft 12 rotates along the sliding slot 114, and the speed reducer 14 is switched to the first state, so that the friction member 141 contacts the friction layer 132, thereby reducing the rotating speed of the core 13. It will be appreciated that the friction member 141 is made of rubber and the friction layer 132 is also made of rubber. One end of the first biasing spring 143 is connected to the friction member 141, and the other end of the first biasing spring 143 is connected to the inside of the chassis.
The reduction gear 14 further includes a rod 142 and a first electromagnet 144, the rod 142 is connected to the friction member 141, the first electromagnet 144 is disposed in the chassis, and the first electromagnet 144 corresponds to the rod 142. The magnetic force can attract the rod 142, the rod 142 is long-shaped, and the long side of the rod 142 is basically parallel to the translation direction of the friction piece 141. And the first biasing spring 143 is located between the friction member 141 and the first electromagnet 144, and the first biasing spring 143 tends to drive the friction member 141 away from the first electromagnet 144. It is understood that one end of the first biasing spring 143 is connected to the friction member 141, and the other end of the first biasing spring 143 is connected to the first electromagnet 144. When the first electromagnet 144 is energized, magnetism is generated to attract the rod 142, and the rod 142 is attracted by magnetic force and approaches the first electromagnet 144. The friction member 141 is driven to move synchronously by the movement of the rod 142, that is, the rod 142 is close to the first electromagnet 144 to drive the friction member 141 to be close to the first electromagnet 144, and the first biasing spring 143 is compressed.
The reduction gear 14 further includes a catch lever 145 and a second biasing spring 146, the magnetic force can attract the catch lever 145, the catch lever 145 can extend into the friction member 141, thereby locking the friction member 141 in the second position, and the second biasing spring 146 biases the catch lever 145 to extend into the friction member 141. The friction member 141 is provided with a notch 1411, the notch 1411 corresponds to the locking rod 145, and the opening direction of the notch 1411 is substantially perpendicular to the translation direction of the friction member 141, so that the locking rod 145 can be inserted into the notch 1411 to lock the friction member 141, and the friction member 141 is locked at the second position. It will be appreciated that the engagement of the notch 1411 with the catch 145 serves to counteract the spring force generated by the compression of the first top pressure spring 143. One end of the second pressing spring 146 is connected to the clamping rod 145, the other end of the second pressing spring 146 is connected to the inside of the chassis, and the second pressing spring 146 presses the clamping rod 145 to extend into the notch 1411, so that the clamping rod 145 locks the friction member 141.
The reduction gear 14 further comprises a second electromagnet 147, the second electromagnet 147 being provided in the chassis. The second pressing spring 146 is located between the clamping rod 145 and the second electromagnet 147, and the second pressing spring 146 tends to drive the clamping rod 145 away from the second electromagnet 147. It will be appreciated that one end of the second biasing spring 146 is connected to the latch 145 and the other end of the second biasing spring 146 is connected to the second electromagnet 147. The locking rod 145 is made of metal, and when the second electromagnet 147 is energized, magnetism is generated to attract the locking rod 145, and the locking rod 145 is attracted by magnetic force to be close to the second electromagnet 147. The catch lever 145 is disengaged from the notch 1411, that is, the catch lever 145 releases the lock on the friction member 141, and the contracted first biasing spring 143 biases the friction member 141, so that the friction member 141 is moved from the second position to the first position, that is, the first biasing spring 143 biases the friction member 141 until the friction member 141 comes into contact with the core 13.
Referring to fig. 2, the sensing device 15 includes a magnet 151 and a hall sensor 152, the magnet 151 rotates in synchronization with the core 13, and the hall sensor 152 senses the movement of the magnet 151. The magnet 151 is provided on the core 13, and when the core 13 rotates around the rotating shaft 12, the magnet 151 rotates around the rotating shaft 12 synchronously, that is, the angular velocity of the magnet 151 is the same as the angular velocity of the core 13. The hall sensor 152 is installed on the chassis, and the hall sensor 152 is installed at the center of the chassis, and the hall sensor 152 is located in the housing 11.
Referring to fig. 2 and 5, the sensing device 16 includes a first sensing plate 161 and a second sensing plate 162, and the first sensing plate 161 and the second sensing plate 162 are in contact to send a first signal, which is a necessary signal for the reduction gear 14 to switch to the first state. Rope 17 stretches into in the casing 11, and rope 17 is connected with first tablet 161, and pulling rope 17 promptly can drive first tablet 161 and remove to drive first tablet 161 and second tablet 162 contact. The second sensing plate 162 is located within the housing 11, and the second sensing plate 162 is substantially fixed within the housing 11. The first sensing plate 161 may move in a linear direction, thereby achieving contact and separation of the first sensing plate 161 and the second sensing plate 162.
The sensing device 16 further comprises a moving plate 163 and a third pressing spring 164, wherein the moving plate 163 is located in the housing 11, and the moving plate 163 can perform translation. The first sensing plate 161 is disposed on the moving plate 163, and the area of the moving plate 163 is larger than or equal to that of the first sensing plate 161. One end of the third biasing spring 164 is connected to the moving plate 163, the other end of the third biasing spring 164 is connected to the inside of the housing 11, and the third biasing spring 164 is located between the first sensing plate 161 and the second sensing plate 162, i.e. the third biasing spring 164 biases the moving plate 163, so that the first sensing plate 161 is far away from the second sensing plate 162.
The wrist power ball 100 is also internally provided with a control circuit 18, and the control circuit 18 receives and sends signals, thereby realizing the control process inside the wrist power ball 100. The control circuit 18 is electrically connected to the first electromagnet 144, and the control circuit 18 is electrically connected to the second electromagnet 147. In the sensing device 16, after the first sensing board 161 contacts the second sensing board 162, a first signal is sent to the control circuit 18, and the first signal is one of the requirements for the control circuit 18 to control the deceleration device 14 to switch to the first state. When the detecting device 15 senses that the rotating speed of the ball core 13 is greater than or equal to the predetermined value, a second signal is sent to the control circuit 18, and the second signal is one of the necessary conditions for the control circuit 18 to control the speed reducing device 14 to switch to the first state. When the detecting device 15 senses that the rotating speed of the ball core 13 is less than the predetermined value, a third signal can be sent to the control circuit 18, and after the control circuit 18 receives the third signal, the control circuit 18 controls the speed reducing device 14 to be switched to the second state.
The operation of the control circuit 18 is as follows:
in the initial state, the reduction gear 14 is in the standby state, that is, the locking rod 145 extends into the notch 1411, thereby locking the friction member 141 at the second position.
When the strong external force pulls the rope 17, the rope 17 is pulled to tend to be away from the wrist force ball 100, the moving plate 163 is pulled to move, and the third pressing spring 164 is compressed and contracted, so that the first sensing plate 161 is close to the second sensing plate 162. The first sensing plate 161 contacts the second sensing plate 162 and sends a first signal to the control circuit 18, and the control circuit 18 receives the first signal, so that the reduction gear 14 is still in the second state. After the strong external force disappears, the retracted third pressing spring 164 presses the moving plate 163 to return to the original position, i.e. the first sensing plate 161 is driven to be away from the second sensing plate 162.
When the user drives the wrist ball 100 to rotate, the ball core 13 rotates, the detection device 15 detects the rotation speed of the ball core 13, when the rotation speed of the ball core 13 is greater than or equal to the predetermined value, the detection device 15 sends a second signal to the control circuit 18, the control circuit 18 receives the signal, and the speed reduction device 14 is still in the second state. When the rotation speed of the core 13 is maintained above the predetermined value, the rope 17 is pulled by the strong external force, and the moving plate 163 is pulled to move, so as to drive the first sensing plate 161 to approach the second sensing plate 162 until the first sensing plate 161 contacts the second sensing plate 162. The first sensing board 161 contacts the second sensing board 162 to send a first signal to the control circuit 18, and the control circuit 18 receives the first signal. The control circuit 18 receives the second signal and the first signal, and the control circuit 18 switches the reduction gear 14 to the first state. That is, the control circuit 18 energizes the second electromagnet 147, and the second electromagnet 147 is energized to drive the latch 145 to disengage from the notch 1411, i.e., to unlock the friction member 141 from the latch 145. After the locking rod 145 is disengaged from the notch 1411, the first pressing spring 143 presses the friction member 141 to the first position, that is, the friction member 141 is driven to move to the first position, so that the friction member 141 contacts the core 13, and the friction member 141 reduces the rotation speed of the core 13 through friction force, that is, the speed reduction device 14 reduces the speed of the core 13. And the jamming rod 145 is disengaged from the notch 1411, the second electromagnet 147 is not energized, i.e., the second electromagnet 147 is energized for a certain time, so that the jamming rod 145 is disengaged from the notch 1411. When the ball core 13 decelerates below the predetermined value, the detecting device 15 detects that the rotating speed of the ball core 13 is less than the predetermined value, so as to send a third signal to the control circuit 18, and the control circuit 18 receives the third signal and switches the decelerating device 14 to the second state. That is, the control circuit 18 energizes the first electromagnet 144, and the first electromagnet 144 is energized to generate magnetism, so as to attract the rod 142, that is, to drive the rod 142 to approach the first electromagnet 144. The rod 142 moves to drive the friction member 141 to move, thereby driving the friction member 141 to the second position, i.e., driving the friction member 141 to the second position.
The string 17 is at least partially in a ring shape, and the ring part of the string 17 can be sleeved on the wrist of the human body, so that the safety of the human body when the wrist power ball 100 is used is improved. When the user uses the wrist ball 100, the wrist ball 100 is far away from the hand after the wrist ball 100 is released from the hand, and the rope 17 is sleeved on the wrist, so that the wrist ball 100 is far away from the rope 17, and the rope 17 is subjected to strong tension to trigger the sensing device 16.
In the prior art, when a user uses the wrist power ball, namely when the ball core rotates, the wrist power ball has load on the hands, and the possibility that the user cannot hold the wrist power ball exists, so that the wrist power ball is separated from the hands, and the wrist power ball is easy to fall to the ground after being separated from the hands, thereby damaging the wrist power ball. Aiming at the problem, the wrist power ball can be prevented from falling off the ground by arranging the rope on the wrist power ball and sleeving the rope on the wrist of the user, so that the damage of the wrist power ball is avoided. The wrist strength ball is easy to contact with a user after being sleeved on the wrist, the wrist strength ball has stronger centrifugal force when rotating, and the possibility of damaging the human body exists when contacting the human body. The speed reducer 14 is arranged in the wrist power ball 100, and the speed reducer 14 can reduce the speed of the ball core 13 after the wrist power ball 100 is taken off the hand, so that the damage to the human body after the wrist power ball 100 is taken off the hand is avoided, and the safety is improved.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are included in the scope of the present invention.
Claims (7)
1. A wrist ball safe to use is characterized by comprising
The device comprises a shell, a first fixing piece and a second fixing piece, wherein a window is formed on the shell;
the sliding chute is arranged on the inner side of the shell;
the rotating shaft is in a straight cylinder shape, two ends of the rotating shaft extend into the sliding grooves, and the rotating shaft slides along the sliding grooves;
the ball core is arranged on the rotating shaft, rotates around the axis of the rotating shaft and at least partially extends out of the window;
the flexible piece extends into the shell, and at least part of the flexible piece is annular;
the sensing device is connected with the flexible piece and comprises a first sensing plate, a second sensing plate and a third elastic piece, the first sensing plate is connected with the flexible piece, the second sensing plate is positioned in the shell, one end of the third elastic piece is connected with the first sensing plate, the other end of the third elastic piece is connected in the shell, the third elastic piece is positioned between the first sensing plate and the second sensing plate, and the flexible piece pulls the first sensing plate to enable the first sensing plate to be in contact with the second sensing plate;
the speed reducer is arranged on a chassis in the shell and comprises a friction piece, a rod, a first electromagnet and a first elastic piece, the friction piece can move between a first position and a second position, the friction piece is located at the first position and contacts with the ball core, the friction piece is located at the second position and is far away from the ball core, the rod is connected to the friction piece and can attract the rod, the first electromagnet is arranged in the shell, the first electromagnet is electrified to drive the friction piece to the second position by attracting the rod, one end of the first elastic piece is connected with the friction piece, the other end of the first elastic piece is connected in the shell, the first elastic piece drives the friction piece to the first position, and the speed reducer can be switched between the first state and the second state, the speed reducer slows down the rotation speed of the ball core in the first state, and the speed reducer does not influence the rotation speed of the ball core in the second state;
a detection device capable of measuring the rotational speed of the core;
if the speed reducer is in the first state, the detection device detects that the rotating speed of the ball core is smaller than a preset value, and the speed reducer is switched to the second state; if the speed reduction device is in the second state, the detection device detects that the rotating speed of the ball core is greater than or equal to the preset value, and the induction device induces that the flexible piece is pulled, the speed reduction device is switched to the first state; if the speed reduction device is in the second state, the detection device detects that the rotating speed of the ball core is smaller than the preset value, or the sensing device does not sense that the flexible piece is pulled, and the speed reduction device is still in the second state.
2. A wrist ball safe in use according to claim 1, wherein said deceleration device further comprises
The clamping rod can extend into the friction piece and lock the friction piece positioned at the second position;
one end of the second elastic piece is connected with the clamping rod, and the other end of the second elastic piece is connected in the shell;
the second electromagnet is arranged in the shell and corresponds to the clamping rod;
when the second electromagnet is electrified to enable the clamping rod to be separated from the friction piece, the first elastic piece drives the friction piece to a first position, and when the first electromagnet is electrified to enable the friction piece to a second position, the second elastic piece drives the clamping rod to stretch into the friction piece.
3. A wrist ball according to claim 2, wherein said first resilient member is a first biasing spring and said second resilient member is a second biasing spring.
4. A wrist ball according to claim 1, wherein said third resilient member is a third biasing spring.
5. A wrist ball safe in use according to claim 1, wherein said detecting means comprises
The magnet is arranged on the ball core;
the Hall sensor is arranged at the center of the bottom wall of the shell;
wherein, the Hall sensor can sense that the magnet is close to.
6. A wrist ball of claim 5, further comprising
The chassis is installed at the bottom of the shell, the Hall sensor is installed on the chassis, and the speed reducing device is also installed on the chassis.
7. A wrist ball according to claim 1, wherein said flexible member is a string.
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| CN202111438062.7A CN114247104B (en) | 2021-11-30 | 2021-11-30 | Wrist strength ball safe in utilization |
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| CN202111438062.7A CN114247104B (en) | 2021-11-30 | 2021-11-30 | Wrist strength ball safe in utilization |
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| CN114247104B true CN114247104B (en) | 2022-09-30 |
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| CN117005989B (en) * | 2023-08-29 | 2024-06-25 | 杭州辚萧科技有限公司 | Vertical axis wind turbine |
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