CN109045569B

CN109045569B - Electronic control shared dumbbell

Info

Publication number: CN109045569B
Application number: CN201811080166.3A
Authority: CN
Inventors: 徐东峰
Original assignee: Wenzhou Manxiwei Clothing Co ltd
Current assignee: Anhui bright noodle Co.,Ltd.
Priority date: 2017-11-07
Filing date: 2018-09-17
Publication date: 2020-08-28
Anticipated expiration: 2038-09-17
Also published as: CN107866027A; CN109045569A

Abstract

The invention belongs to the technical field of dumbbells, and particularly relates to an electronic control shared dumbbell which comprises a first weight lifting block mechanism, a second weight lifting block mechanism, a hand-held rod mechanism and a code scanning area, wherein the hand-held rod mechanism is arranged between the first weight lifting block mechanism and the second weight lifting block mechanism; a code scanning area is arranged on the first weight lifting mechanism; the hand-held lever mechanism is arranged between the first weight lifting block mechanism and the second weight lifting block mechanism and is used for connecting the first weight lifting block mechanism and the second weight lifting block mechanism; the first weight lifting mechanism is provided with the code scanning area which is used for controlling the dumbbell to be used, and only a code-scanned person can use the dumbbell; when the weight is not scanned, the user can deform the hand-holding rod mechanism when using the dumbbell provided by the invention, so that the first weight lifting block mechanism and the second weight lifting block mechanism can be combined together, the dumbbell can not be normally used, and after the weight is scanned, the hand-holding rod mechanism can be turned hard, and the user can normally use the dumbbell.

Description

Electronic control shared dumbbell

Technical Field

The invention belongs to the technical field of dumbbells, and particularly relates to an electronic control shared dumbbell.

Background

Present dumbbell appears in sports classroom, body-building club, staff club, and present dumbbell needs professional staff's management, when the person of taking exercise wants to use the dumbbell, must borrow out to the staff and take exercises, so will waste user's time, the personnel administrative cost that will also increase of professional's management simultaneously, in order to reduce artificial administrative cost and save user's time, combine the inspiration of the appearance of current sharing bicycle, so just need design an automatically controlled shared dumbbell.

The invention designs an electronic control shared dumbbell to solve the problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention discloses an electronic control shared dumbbell which is realized by adopting the following technical scheme.

An electronic control shared dumbbell is characterized in that: the weight-lifting device comprises a first weight-lifting block mechanism, a second weight-lifting block mechanism, a hand-held rod mechanism and a code-scanning area, wherein the hand-held rod mechanism is arranged between the first weight-lifting block mechanism and the second weight-lifting block mechanism; the first weight lifting mechanism is provided with a code scanning area.

The first weight lifting block mechanism comprises a first weight lifting column, a containing hole, a first cylindrical hole, a driving gear, a first transmission gear, a motor, a second transmission gear, a guide rail, a first return spring, a first amplifying gear, a first T-shaped groove, a first fixed shaft, a first limiting plate, a connecting rod, a second fixed shaft, a second return spring, a driving block, a connecting ring, a second amplifying gear, a second limiting plate and a second T-shaped groove, wherein the end face of the first weight lifting column is provided with the first cylindrical hole; an internal thread is arranged on the inner circular surface of the first cylindrical hole; the inner circle surface of the first cylindrical hole is provided with a containing hole; the end face of the accommodating hole is provided with a first T-shaped groove; the end face of the motor is arranged on the end face, far away from the first T-shaped groove, of the accommodating hole; the driving gear is arranged on a shaft of the motor; a second limiting plate is arranged on the end face of the second fixed shaft; the second fixed shaft is arranged in the accommodating hole through the matching of a second limiting plate and the first T-shaped groove; the first transmission gear is arranged on the second fixed shaft through a bearing and is meshed with the driving gear; the second return spring is positioned in the first T-shaped groove; one end of a second return spring is arranged on the end surface of the first T-shaped groove, and the other end of the second return spring is arranged on a second fixed shaft; the two driving blocks are symmetrically arranged on the inner circular surface of the hole on the second transmission gear; the second transmission gear is arranged in the accommodating hole, is matched with the hand-held rod mechanism and is meshed with the first transmission gear; a second T-shaped groove is formed in the end face of the guide rail; the guide rail is arranged on the end face of the accommodating hole; the guide rail and the first T-shaped groove are distributed in parallel; a first limiting plate is arranged on the end face of the first fixed shaft; the first fixed shaft is matched with the first T-shaped groove through a first limiting plate and is arranged on the guide rail; the first amplifying gear is arranged on the first fixed shaft and matched with the driving gear; the second amplifying gear is arranged on the first fixed shaft and matched with the second transmission gear; the first return spring is positioned in the first T-shaped groove, one end of the first return spring is arranged on the end face of the first T-shaped groove, and the other end of the first return spring is arranged on the first fixed shaft; the inner circular surface of the connecting ring is arranged on the outer circular surface of the first fixed shaft; one end of the connecting rod is arranged on the outer circular surface of the connecting ring, and the other end of the connecting rod is arranged on the second fixing shaft.

The second weight lifting block mechanism comprises a second weight lifting column, a fifth cylindrical hole, a square groove, a third T-shaped groove, a guide groove, a third return spring, a limiting block, a guide block, a first inclined plane and a second inclined plane, wherein the fifth cylindrical hole is formed in the end face of the second weight lifting column; a third T-shaped groove which is not communicated is formed in the end face of the fifth cylindrical hole; 4 square grooves are uniformly formed in the inner circular surface of the fifth cylindrical hole in the circumferential direction; the structure and the installation structure of each square groove are completely the same, and for one of the square grooves, two guide grooves are symmetrically formed on the two side surfaces of the square groove; the two side surfaces of the limiting block are respectively provided with a first inclined surface and a second inclined surface; the inclination angle of the first inclined plane relative to the side surface of the limiting block is larger than that of the second inclined plane; the two guide blocks are symmetrically arranged on the two side surfaces of the limiting block; the limiting block is arranged in the square groove through the matching of the guide block and the guide groove and is matched with the hand-held rod mechanism; the third return spring is positioned in the square groove; one end of the third spring is arranged on the end face of the reverse groove, and the other end of the third spring is arranged on the limiting block.

The holding rod mechanism comprises a first limiting column, a first spherical block, a soft rod, a second limiting column, a holding unit, a first spherical shell, a third limiting column, a second clamping ring, a fixing column, a third cylindrical hole, a second clamping groove, a fourth cylindrical hole, a volute spring, a limiting groove, a T-shaped block and a driving groove, wherein the end surface of the first spherical block is provided with the fourth cylindrical hole; an internal thread is formed on the inner circular surface of the fourth cylindrical hole; a second clamping groove is formed in the outer spherical surface of the first spherical block; the first spherical block is arranged on the end face of the first lifting column, and the fourth cylindrical hole is communicated with the first cylindrical hole; a second snap ring is arranged on the inner spherical surface of the first spherical shell; a third through cylindrical hole is formed in the end face of the fixed column; the inner circular surface of the third cylindrical hole is provided with internal threads; the first spherical shell is installed on the end face of the second lifting column through a fixing column; 5 hand-held units are sequentially arranged between the first spherical block and the first spherical shell; chamfers are arranged at two ends of the first limiting column; the outer circular surface of the first limiting column is provided with an external thread; the end surface of the first limiting column is provided with a drive groove which is not communicated; the first limiting column is in threaded fit with the first cylindrical hole and the fourth cylindrical hole; chamfers are arranged at two ends of the 5 second limiting columns; external threads are formed on the outer circular surfaces of the 5 second limiting columns; 5 second limiting columns are arranged in the corresponding hand holding units; 4 limiting grooves are uniformly formed in the outer circular surface of the third limiting column in the circumferential direction; the third limiting column is arranged in the fifth cylindrical hole; the first limiting column, the 5 second limiting columns and the third limiting column are connected through a soft rod; the scroll spring is positioned in the fifth cylindrical hole, and the inner end of the scroll spring is arranged on the end surface of the third limiting column; the T-shaped block is arranged at the outer end of the volute spiral spring, and the T-shaped block and the third T-shaped groove are arranged on the second lifting column in a sliding fit mode.

The hand-holding unit comprises a second spherical shell, a connecting column, a second spherical block, a first clamping groove, a second cylindrical hole and a first clamping ring, wherein the first clamping ring is arranged on the inner spherical surface of the second spherical shell; a first clamping groove is formed in the outer spherical surface of the second spherical block; the second spherical shell is connected with the second spherical block through a connecting column; the connecting column and the second spherical block are both provided with second cylindrical holes; an internal thread is formed on the inner circular surface of the second cylindrical hole; 5 hold the unit and loop through spherical surface and the cooperation installation of second spherical piece ectosphere in the spherical shell of second, and first snap ring and the cooperation of first draw-in groove.

The hand holding unit matched with the first spherical block is matched with the inner spherical surface of the second spherical shell through the outer spherical surface of the first spherical block, and the first clamping ring is matched with the second clamping groove; the hand holding unit matched with the first spherical shell is matched and installed with the inner spherical surface of the second spherical shell through the outer spherical surface of the second spherical block, and the first clamping groove is matched with the second clamping ring; the first cylindrical hole, the fourth cylindrical hole, the second cylindrical hole and the third cylindrical hole are communicated in sequence; the soft rod is deformed under the action of the weights of the two lifting columns; the soft rod can transmit torque; external threads on the 5 second limiting columns are matched with internal threads formed on corresponding second cylindrical holes; the first inclined plane is matched with the second inclined plane limiting groove; the driving block is in sliding fit with the driving groove.

As a further improvement of the present technique, the above-mentioned connection ring is mounted on the first fixed shaft through a bearing.

As a further improvement of the present technology, the chamfer on the first, second, and third limiting posts has the same size.

As a further improvement of the present technology, the first magnifying gear is mounted on the first fixed shaft by a key.

As a further improvement of the present technology, the outer circular surfaces of the first, second, and third limiting posts are coated with lubricating oil.

As a further improvement of the technology, the diameters of the first limiting column, the second limiting column and the third limiting column are the same; the first cylindrical hole, the fourth cylindrical hole, the second cylindrical hole and the third cylindrical hole have the same aperture.

As a further improvement of the present technology, the first snap ring and the second snap ring have a certain elasticity.

As a further improvement of the technology, the inclination angle of the first inclined plane relative to the side surface of the limiting block is 70 degrees; the inclination angle of the second inclined plane relative to the side surface of the limiting block is 20 degrees.

Compared with the traditional dumbbell technology, the hand-held rod mechanism is provided with the first weight lifting block mechanism and the second weight lifting block mechanism to achieve the effect of connecting the first weight lifting block mechanism and the second weight lifting block mechanism; the first weight lifting mechanism is provided with the code scanning area which is used for controlling the dumbbell to be used, and only a code-scanned person can use the dumbbell; when the weight is not scanned, the user can deform the hand-holding rod mechanism when using the dumbbell provided by the invention, so that the first weight lifting block mechanism and the second weight lifting block mechanism can be combined together, the dumbbell can not be normally used, and after the weight is scanned, the hand-holding rod mechanism can be turned hard, and the user can normally use the dumbbell.

The first weight lifting mechanism is used for balancing the weight of the dumbbell and controlling the use right of the dumbbell; the end face of the first lifting column is provided with a first cylindrical hole for facilitating installation of a first limiting column; the inner circular surface of the first cylindrical hole is provided with internal threads which are matched with external threads formed on the first limiting column, so that the purpose of limiting the movement of the first limiting column is achieved; the inner circular surface of the first cylindrical hole is provided with a containing hole for containing a motor, a driving gear, a first transmission gear and the like; the end face of the accommodating hole is provided with a first T-shaped groove which is used for being matched with a second limiting plate arranged on the second fixed shaft and providing a guiding function for the movement of the second fixed shaft; the end face of the motor is arranged on the end face of the accommodating hole far away from the first T-shaped groove and is used for providing power for the dumbbell; the driving gear is arranged on the shaft of the motor and is used for transmitting the motion of the motor to the first driving gear; the end face of the second fixed shaft is provided with a second limiting plate for limiting the movement of the second fixed shaft; the second fixing shaft is arranged in the accommodating hole through the matching of the second limiting plate and the first T-shaped groove, and the first transmission gear is conveniently fixed; the first transmission gear is arranged on the second fixed shaft through a bearing, and the first transmission gear is meshed with the driving gear to transmit the motion of the driving gear to the second transmission gear; the second return spring is positioned in the first T-shaped groove; one end of the second return spring is arranged on the end surface of the first T-shaped groove, and the other end of the second return spring is arranged on the second fixing shaft and is used for acting as a restoring force of the second fixing shaft; the two driving blocks are symmetrically arranged on the inner circular surface of the hole formed in the second transmission gear and are used for being matched with the driving groove formed in the first limiting column, so that the purpose of driving the first limiting column to move is achieved; the second transmission gear is arranged in the accommodating hole, is matched with the hand-held rod mechanism and is meshed with the first transmission gear to drive the first limiting column to move; the end face of the guide rail is provided with a second T-shaped groove which is matched with a first limiting plate arranged on the first fixed shaft and plays a role in guiding the movement of the first fixed shaft; the first fixed shaft is arranged on the guide rail through the matching of the first limiting plate and the first T-shaped groove and has the function of fixing the first amplification gear and the second amplification gear; the first amplifying gear is arranged on the first fixed shaft and matched with the driving gear; the second amplifying gear is arranged on the first fixed shaft, and the second amplifying gear and the second transmission gear are matched to amplify the torque value of the shaft of the motor penetrating out; the first return spring is positioned in the first T-shaped groove, one end of the first return spring is arranged on the end face of the first T-shaped groove, and the other end of the first return spring is arranged on the first fixing shaft and is used for exerting a restoring force on the first fixing shaft; the inner circular surface of the connecting ring is arranged on the outer circular surface of the first fixed shaft, so that the connecting rod is convenient to install, and the connecting rod is prevented from influencing the movement of the first fixed shaft; one end of the connecting rod is arranged on the outer circular surface of the connecting ring, and the other end of the connecting rod is arranged on the second fixing shaft and is used for connecting the first fixing shaft and the second fixing shaft.

The second weight lifting block mechanism is used for providing a balance weight; a fifth cylindrical hole is formed in the end face of the second lifting column, so that a third limiting column can be conveniently installed; the end face of the fifth cylindrical hole is provided with a third T-shaped groove which is not communicated, so that the T-shaped block can conveniently slide in the third T-shaped groove, and the purpose of limiting the movement of the T-shaped block is achieved; 4 square grooves are uniformly formed in the inner circular surface of the fifth cylindrical hole in the circumferential direction, so that a limiting block is convenient to mount; two guide grooves are symmetrically arranged on two side surfaces of the square groove and are used for providing a guide function for the movement of the limiting block; the two side surfaces of the limiting block are respectively provided with a first inclined surface and a second inclined surface, so that the limiting block can conveniently pass through the limiting groove; the inclination angle of the first inclined plane relative to the side surface of the limiting block is larger than that of the second inclined plane, so that the torque value required by the limiting groove moving along the direction of the first inclined plane is smaller than that of the limiting groove moving along the second inclined plane; the third return spring is positioned in the square groove; one end of the third spring is arranged on the end face of the reverse groove, and the other end of the third spring is arranged on the limiting block and is used for restoring force to the limiting block.

The hand-held rod mechanism is used for connecting the first weight lifting block mechanism and the second weight lifting block mechanism; a fourth cylindrical hole is formed in the end face of the first spherical block, so that the first limiting column can be conveniently installed; the inner circular surface of the fourth cylindrical hole is provided with internal threads for limiting the movement of the first limiting column; the outer spherical surface of the first spherical block is provided with a second clamping groove which is used for being matched with the first clamping ring on the second spherical shell, so that the purpose of stabilizing the holding rod mechanism is achieved; the first spherical block is arranged on the end face of the first lifting column, and the fourth cylindrical hole is communicated with the first cylindrical hole and is used for connecting the hand-holding unit with the first lifting column; the second clamping ring is arranged on the inner spherical surface of the first spherical shell and is used for being matched with a first clamping groove formed in the second spherical block, so that the effect of stabilizing the holding rod mechanism is achieved; the end face of the fixed column is provided with a through third cylindrical hole for facilitating the movement of the second limiting column; the inner circular surface of the third cylindrical hole is provided with internal threads which are matched with external threads arranged on the outer circular surface of the second limiting column; the first spherical shell is arranged on the end face of the second lifting column through a fixing column and is convenient to connect the hand holding unit with the second lifting column; the 5 hand-holding units are sequentially arranged between the first spherical block and the first spherical shell, so that the dumbbell can be conveniently held by hands; the two ends of the first limiting column are provided with chamfers so that the first limiting column can smoothly pass through the connecting part of the first spherical block and the handheld unit; the two ends of the 5 second limiting columns are provided with chamfers so that the second limiting columns can pass through the connecting part between the two adjacent handheld units; the outer circular surfaces of the 5 second limiting columns are provided with external threads which are matched with the internal threads on the inner circular surface of the second cylindrical hole, so that the purpose of limiting the movement of the second limiting columns is achieved; the 5 second limiting columns are arranged in the corresponding hand-holding units and are used for limiting the movement of the hand-holding units; 4 limiting grooves are uniformly formed in the outer circular surface of the third limiting column in the circumferential direction and are matched with the first inclined surface and the second inclined surface of the limiting block, so that the purpose of controlling the third limiting column to move is achieved; the first limiting column, the 5 second limiting columns and the third limiting column are connected through the soft rod, and the soft rod can transmit torque; the scroll spring is positioned in the fifth cylindrical hole, and the inner end of the scroll spring is arranged on the end surface of the third limiting column; the T-shaped block is arranged at the outer end of the volute spiral spring, and the T-shaped block and the third T-shaped groove are arranged on the second lifting column in a sliding fit mode and have the function of providing restoring force for the third limiting column; the soft rod of the invention can deform under the action of the weights of the two lifting columns; the soft rod can transmit torque; the chamfer angles on the first limiting column, the second limiting column and the third limiting column have the same size, so that the production cost is reduced, and the aim of saving the cost is fulfilled; the outer circular surfaces of the first limiting column, the second limiting column and the third limiting column are coated with lubricating oil, so that the first limiting column, the second limiting column and the third limiting column can move better; the diameters of the first limiting column, the second limiting column and the third limiting column are the same; the same hole diameters of the first cylindrical hole, the fourth cylindrical hole, the second cylindrical hole and the third cylindrical hole have the effect of facilitating the sliding of the first limiting column, the second limiting column and the third limiting column; the first clamping ring and the second clamping ring have certain elasticity to play a role in stabilizing the handheld unit; the inclination angle of the first inclined plane relative to the side surface of the limiting block is 70 degrees; the inclined angle of the second inclined plane relative to the side surface of the limiting block is 20 degrees, so that the limiting block can achieve the purpose of limiting the third limiting column best.

In the using process, when an exerciser needs to use the dumbbell disclosed by the invention, the code scanning area is firstly scanned, the motor rotates after code scanning, the rotating motor drives the driving gear to move, the driving gear drives the first transmission gear to move, and the first transmission gear is acted by a driving force far away from the first T-shaped groove, so that the second fixing shaft cannot move along the direction of the first T-shaped groove; the first transmission gear will drive the second transmission gear to move, the second transmission gear will drive the driving block to move, the driving block will drive the first spacing column to move, the first spacing column will move along the self axis under the action of the screw thread, the first spacing column will transmit the torque to the third spacing column under the action of the soft rod, the third spacing column will press the spacing block while rotating, thereby the spacing block will limit the movement of the third spacing column, at this time, the volute spring will be compressed, the motor will stop rotating, at this time, the third spacing column will receive the restoring force of the volute spring, but under the action of the second inclined plane opened on the spacing block, the movement of the third spacing column will be limited, at this time, the first spacing column and the second spacing column will limit the movement of the hand-holding unit, so the hand-holding rod mechanism will not deform, therefore, the dumbbell can be normally used, when a user cannot use the dumbbell, the user needs to scan the code again in the code scanning area, the third limiting column at the moment can be subjected to the restoring force of the volute spiral spring, the motor can reversely rotate after the code is scanned, the moving motor can provide an acting force for the first transmission gear to move along the first T-shaped groove, the second fixing shaft can drive the connecting rod to move, the connecting rod can drive the connecting ring to move, the connecting ring can drive the first fixing shaft to move along the second T-shaped groove formed in the guide rail, the first fixing shaft can drive the first amplification gear and the second amplification gear to move, and the first amplification gear is meshed with the driving shaft; the second amplifying gear is meshed with the second transmission gear, the torque of the motor at the moment can be amplified through the action of the driving gear, the first amplifying gear, the second amplifying gear and the second transmission gear in sequence, the third limiting column can restore the original position of the third limiting column under the combined action of the restoring force of the volute spiral spring and the second transmission gear, the third limiting column can drive the soft rod, the second limiting column and the first limiting column to move, so that the first limiting column, the second limiting column and the third limiting column can not limit the movement of the handheld unit, the handheld rod mechanism can deform under the condition that the dumbbell is not scanned with codes, and the dumbbell can not be normally used; the scroll spring is used for resetting, so that the purpose of saving electric energy is achieved, the using frequency of the motor is low, and the power of the used motor is low, so that the purposes of prolonging the service life of the dumbbell and saving energy are achieved.

Drawings

Fig. 1 is a schematic view of the overall component distribution.

Fig. 2 is a schematic view of the mounting structure of the grab bar mechanism.

FIG. 3 is a cross-sectional view of the grab bar mechanism.

Fig. 4 is a schematic view of a drive gear mounting structure.

Fig. 5 is a sectional view of the first weight post structure.

FIG. 6 is a schematic view of a first lifting column structure.

Fig. 7 is a schematic view of a first lifting column structure (two).

Fig. 8 is a schematic view of a motor mounting structure.

Fig. 9 is a schematic view of a first fixed shaft mounting structure.

Fig. 10 is a schematic view of a first enlarged gear mounting structure.

Fig. 11 is a schematic view of a connecting rod mounting structure.

Fig. 12 is a schematic view of a second enlarged gear mounting structure.

Fig. 13 is a schematic view of a rail structure.

Figure 14 is a schematic view of a second weight post configuration.

Fig. 15 is a cross-sectional view of a second weight post construction.

Fig. 16 is a schematic view of a second weight column configuration (two).

Fig. 17 is a schematic view of a third return spring mounting arrangement.

Fig. 18 is a schematic view of a hand-held unit configuration.

FIG. 19 is a schematic view of a second snap ring mounting arrangement.

Fig. 20 is a schematic view of a first spherical block structure.

Fig. 21 is a schematic view of a guide block mounting structure.

Fig. 22 is a schematic view of a second restraint post mounting structure.

FIG. 23 is a schematic view of a third limiting post.

Fig. 24 is a schematic view of a stopper structure.

Fig. 25 is a schematic view of a first stopper post structure.

Number designation in the figures: 1. a first weight lifting mechanism; 2. a grab bar mechanism; 3. scanning a code area; 4. a first limit post; 5. a second weight lifting block mechanism; 6. a first weight lifting column; 7. a first spherical block; 8. a soft rod; 9. a second limit post; 10. a hand-held unit; 11. a first spherical shell; 12. an accommodation hole; 13. a first cylindrical bore; 14. a drive gear; 15. a first drive gear; 16. an electric motor; 18. a third limiting column; 19. a second transmission gear; 20. a second spherical shell; 21. connecting columns; 22. a second spherical block; 23. a first card slot; 24. a second cylindrical bore; 25. a first snap ring; 27. a second snap ring; 28. fixing a column; 30. a third cylindrical bore; 31. a second card slot; 32. a fourth cylindrical bore; 33. a volute spiral spring; 34. a second weight lifting column; 35. a guide rail; 36. a first return spring; 37. a first amplification gear; 38. a first T-shaped slot; 39. a first fixed shaft; 40. a first limit plate; 41. a connecting rod; 42. a second fixed shaft; 43. a second return spring; 44. a drive block; 45. a connecting ring; 46. a second amplification gear; 47. a second limiting plate; 48. a second T-shaped slot; 49. a fifth cylindrical hole; 50. a square groove; 51. a third T-shaped slot; 52. a guide groove; 53. a third return spring; 54. a limiting block; 55. a guide block; 56. a limiting groove; 57. a T-shaped block; 58. a first inclined plane; 59. a drive slot; 60. a second inclined plane.

Detailed Description

As shown in fig. 1, 2 and 3, it comprises a first weight lifting mechanism 1, a second weight lifting mechanism 5, a hand-held lever mechanism 2 and a code scanning area 3, as shown in fig. 1, 2 and 3, wherein the hand-held lever mechanism 2 is arranged between the first weight lifting mechanism 1 and the second weight lifting mechanism 5; as shown in fig. 1, 2 and 3, the first weight lifting mechanism 1 is provided with a code scanning area 3.

As shown in fig. 3 and 4, the first weight lifting mechanism 1 includes a first weight lifting column 6, a receiving hole 12, a first cylindrical hole 13, a driving gear 14, a first transmission gear 15, a motor 16, a second transmission gear 19, a guide rail 35, a first return spring 36, a first amplification gear 37, a first T-shaped groove 38, a first fixed shaft 39, a first limit plate 40, a connecting rod 41, a second fixed shaft 42, a second return spring 43, a driving block 44, a connecting ring 45, a second amplification gear 46, a second limit plate 47, and a second T-shaped groove 48, as shown in fig. 5 and 6, wherein the first cylindrical hole 13 is formed in an end surface of the first weight lifting column 6; the inner circle surface of the first cylindrical hole 13 is provided with internal threads; as shown in fig. 6, the first cylindrical hole 13 is provided with a receiving hole 12 on its inner circumferential surface; as shown in fig. 7, the end face of the accommodating hole 12 is provided with a first T-shaped groove 38; as shown in fig. 7 and 8, the end face of the motor 16 is mounted on the end face of the accommodating hole 12 away from the first T-shaped groove 38; as shown in fig. 9, the drive gear 14 is mounted on the shaft of the motor 16; as shown in fig. 12, a second stopper plate 47 is mounted on an end surface of the second fixed shaft 42; as shown in fig. 10, the second fixed shaft 42 is mounted in the receiving hole 12 by the engagement of the second stopper plate 47 with the first T-shaped groove 38; the first transmission gear 15 is mounted on the second fixed shaft 42 through a bearing, and the first transmission gear 15 is meshed with the driving gear 14; as shown in fig. 9, the second return spring 43 is located in the first T-shaped groove 38; one end of a second return spring 43 is arranged on the end surface of the first T-shaped groove 38, and the other end is arranged on the second fixed shaft 42; as shown in fig. 10, two driving blocks 44 are symmetrically installed on the inner circular surface of the hole formed on the second transmission gear 19; as shown in fig. 3, a second transmission gear 19 is installed in the accommodation hole 12, the second transmission gear 19 is engaged with the grab bar mechanism 2, and the second transmission gear 19 is engaged with the first transmission gear 15; as shown in fig. 13, the end face of the guide rail 35 is provided with a second T-shaped groove 48; as shown in fig. 3, the guide rail 35 is mounted on the end face of the accommodation hole 12; the guide rail 35 is parallel to the first T-shaped groove 38; as shown in fig. 10, a first limiting plate 40 is mounted on the end surface of the first fixed shaft 39; as shown in fig. 10, the first fixing shaft 39 is mounted on the guide rail 35 by being engaged with the first T-shaped groove 38 through the first stopper plate 40; as shown in fig. 12, the first amplification gear 37 is mounted on the first fixed shaft 39, and the first amplification gear 37 is engaged with the drive gear 14; as shown in fig. 12, the second amplification gear 46 is mounted on the first fixed shaft 39, and the second amplification gear 46 is engaged with the second transmission gear 19; as shown in fig. 10, the first return spring 36 is located in the first T-shaped groove 38, one end of the first return spring 36 is mounted on the end surface of the first T-shaped groove 38, and the other end is mounted on the first fixed shaft 39; as shown in fig. 11, the inner circumferential surface of the connection ring 45 is mounted on the outer circumferential surface of the first fixed shaft 39; as shown in fig. 11, one end of the connection rod 41 is mounted on the outer circumferential surface of the connection ring 45, and the other end is mounted on the second fixed shaft 42.

As shown in fig. 3, the second weight lifting block mechanism 5 includes a second weight lifting column 34, a fifth cylindrical hole 49, a square groove 50, a third T-shaped groove 51, a guide groove 52, a third return spring 53, a limit block 54, a guide block 55, a first inclined plane 58, and a second inclined plane 60, as shown in fig. 14, wherein the fifth cylindrical hole 49 is formed on the end surface of the second weight lifting column 34; as shown in fig. 16, a third T-shaped slot 51 is opened on the end surface of the fifth cylindrical hole 49; as shown in fig. 15, 4 square grooves 50 are uniformly formed on the inner circumferential surface of the fifth cylindrical hole 49 in the circumferential direction; the structure and the installation structure of each square groove 50 are completely the same, and for one of the square grooves, as shown in fig. 15, two guide grooves 52 are symmetrically formed on two side surfaces of the square groove 50; as shown in fig. 17 and 24, two side surfaces of the stopper 54 are respectively provided with a first inclined surface 58 and a second inclined surface 60; as shown in FIG. 24, the angle of inclination of the first ramp 58 relative to the side of the stopper 54 will be greater than the angle of inclination of the second ramp 60; as shown in fig. 21, two guide blocks 55 are symmetrically installed on two side surfaces of the limiting block 54; the limiting block 54 is arranged in the square groove 50 through the matching of the guide block 55 and the guide groove 52 and is matched with the hand-held rod mechanism 2; as shown in fig. 24, the third return spring 53 is located in the square groove 50; as shown in fig. 21, one end of the third spring is mounted on the end surface of the reverse groove, and the other end is mounted on the stopper 54.

As shown in fig. 22, the above-mentioned grab bar mechanism 2 includes a first limit column 4, a first spherical block 7, a soft rod 8, a second limit column 9, a hand-held unit 10, a first spherical shell 11, a third limit column 18, a second snap ring 27, a fixed column 28, a third cylindrical hole 30, a second clamping groove 31, a fourth cylindrical hole 32, a volute spring 33, a limit groove 56, a T-shaped block 57, and a driving groove 59, as shown in fig. 20, wherein the end surface of the first spherical block 7 is provided with the fourth cylindrical hole 32; the inner circle surface of the fourth cylindrical hole 32 is provided with internal threads; as shown in fig. 20, the outer spherical surface of the first spherical block 7 is provided with a second locking groove 31; as shown in fig. 3, the first spherical block 7 is mounted on the end face of the first lifting column 6, and the fourth cylindrical hole 32 communicates with the first cylindrical hole 13; as shown in fig. 19, a second snap ring 27 is mounted on the inner spherical surface of the first spherical shell 11; as shown in fig. 19, a third through cylindrical hole 30 is opened on the end surface of the fixing post 28; the inner circle surface of the third cylindrical hole 30 is provided with internal threads; as shown in fig. 3, the first spherical shell 11 is mounted on the end face of the second weight lifting column 34 through the fixing column 28; as shown in fig. 22, 5 hand-held units 10 are sequentially installed between the first spherical block 7 and the first spherical housing 11; chamfers are arranged at two ends of the first limiting column 4; the outer circular surface of the first limit column 4 is provided with an external thread; as shown in fig. 25, the end surface of the first limit post 4 is provided with a drive groove 59 which is not penetrated; the first limiting column 4 is in threaded fit with the first cylindrical hole 13 and the fourth cylindrical hole 32; as shown in fig. 22, two ends of each of the 5 second limiting columns 9 are provided with chamfers; external threads are formed on the outer circular surfaces of the 5 second limiting columns 9; as shown in fig. 22, 5 second restraint posts 9 are installed in the corresponding hand-held units 10; as shown in fig. 23, 4 limiting grooves 56 are uniformly formed in the outer circumferential surface of the third limiting column 18 in the circumferential direction; the third limit column 18 is arranged in the fifth cylindrical hole 49; as shown in fig. 22, the first limiting column 4, the 5 second limiting columns 9 and the third limiting column 18 are connected through the soft rod 8; as shown in fig. 3, the spiral spring 33 is located in the fifth cylindrical hole 49, and the inner end of the spiral spring 33 is mounted on the end surface of the third position-limiting post 18; as shown in FIG. 3, a T-block 57 is mounted on the outer end of the spiral spring 33, and the T-block 57 is mounted on the second lifting column 34 in sliding engagement with the third T-shaped slot 51.

As shown in fig. 18, the hand-held unit 10 includes a second spherical shell 20, a connecting column 21, a second spherical block 22, a first engaging groove 23, a second cylindrical hole 24, and a first engaging ring 25, as shown in fig. 18, wherein the first engaging ring 25 is mounted on the inner spherical surface of the second spherical shell 20; as shown in fig. 18, the outer spherical surface of the second spherical block 22 is provided with a first locking groove 23; as shown in fig. 18, the second spherical shell 20 is connected to the second spherical block 22 through a connection column 21; as shown in fig. 18, the connecting column 21 and the second spherical block 22 are both provided with a second cylindrical hole 24; the inner circle surface of the second cylindrical hole 24 is provided with internal threads; as shown in fig. 22, the 5 hand-held units 10 are sequentially fitted with the inner spherical surface of the second spherical shell 20 and the outer spherical surface of the second spherical block 22, and the first snap ring 25 is fitted with the first snap groove 23.

The hand holding unit 10 matched with the first spherical block 7 is matched with the inner spherical surface of the second spherical shell 20 through the outer spherical surface of the first spherical block 7, and the first clamping ring 25 is matched with the second clamping groove 31; the hand-holding unit 10 matched with the first spherical shell 11 is matched and installed with the inner spherical surface of the second spherical shell 20 through the outer spherical surface of the second spherical block 22, and the first clamping groove 23 is matched with the second clamping ring 27; the first cylindrical hole 13, the fourth cylindrical hole 32, the second cylindrical hole 24 and the third cylindrical hole 30 are communicated in sequence; the soft rod 8 will deform under the action of the weight of the two weight lifting columns; the soft rod 8 can transmit torque; external threads on the 5 second limiting columns 9 are matched with internal threads formed on the corresponding second cylindrical holes 24; the first ramp 58 and the second ramp 60 cooperate to define the slot 56; the drive block 44 is in sliding engagement with the drive slot 59.

The above-mentioned connection ring 45 is mounted on the first fixed shaft 39 by means of a bearing.

The chamfer sizes on the first limiting column 4, the second limiting column 9 and the third limiting column 18 are the same.

The first amplification gear 37 is mounted on the first fixed shaft 39 by a key.

And lubricating oil is coated on the outer circular surfaces of the first limiting column 4, the second limiting column 9 and the third limiting column 18.

The diameters of the first limiting column 4, the second limiting column 9 and the third limiting column 18 are the same; the first cylindrical hole 13, the fourth cylindrical hole 32, the second cylindrical hole 24 and the third cylindrical hole 30 have the same hole diameter.

The first snap ring 25 and the second snap ring 27 have a certain elasticity.

The inclination angle of the first inclined plane 58 relative to the side surface of the stopper 54 is 70 degrees; the angle of inclination of the second inclined surface 60 with respect to the side of the stopper 54 is 20 degrees.

In summary, the following steps:

in the invention, the first weight lifting block mechanism 1 and the second weight lifting block mechanism 5 are arranged between the hand-held rod mechanism 2 to achieve the effect of connecting the two weight lifting block mechanisms; the first weight lifting mechanism 1 is provided with the code scanning area 3, so that the use right of the dumbbell can be controlled, and only a code-scanned person can use the dumbbell; when the weight is not scanned, the user can deform the hand-holding rod mechanism 2 when using the dumbbell of the invention, so that the first weight lifting block mechanism 1 and the second weight lifting block mechanism 5 can be combined together, the dumbbell can not be normally used, and after the weight is scanned, the hand-holding rod mechanism 2 can be turned hard, and the user can normally use the dumbbell.

The first weight lifting mechanism 1 is used for weighting the dumbbell and controlling the use right of the dumbbell; the end face of the first lifting column 6 is provided with a first cylindrical hole 13 for facilitating installation of the first limiting column 4; the inner circular surface of the first cylindrical hole 13 is provided with internal threads which are matched with external threads formed on the first limiting column 4, so that the purpose of limiting the movement of the first limiting column 4 is achieved; the inner surface of the first cylindrical hole 13 is provided with a receiving hole 12 for receiving a motor 16, a driving gear 14, a first transmission gear 15 and the like; the end face of the accommodating hole 12 is provided with a first T-shaped groove 38 which is used for matching with a second limiting plate 47 arranged on the second fixed shaft 42 and providing a guiding function for the movement of the second fixed shaft 42; the end face of the motor 16, which is arranged on the end face of the accommodating hole 12 far away from the first T-shaped groove 38, is used for providing power for the dumbbell; the mounting of the drive gear 14 on the shaft of the electric motor 16 serves to transmit the motion of the electric motor 16 to the first transmission gear 15; a second limiting plate 47 is arranged on the end face of the second fixed shaft 42 and used for limiting the movement of the second fixed shaft 42; the second fixing shaft 42 is mounted in the accommodating hole 12 through the cooperation of the second limit plate 47 and the first T-shaped groove 38, and functions to fix the first transmission gear 15; the first transmission gear 15 is mounted on the second fixed shaft 42 through a bearing, and the meshing effect of the first transmission gear 15 and the driving gear 14 is to transmit the motion of the driving gear 14 to the second transmission gear 19; the second return spring 43 is located within the first T-shaped slot 38; one end of the second return spring 43 is arranged on the end surface of the first T-shaped groove 38, and the other end of the second return spring 43 is arranged on the second fixed shaft 42 and is used for acting as a restoring force of the second fixed shaft 42; the two driving blocks 44 are symmetrically arranged on the inner circular surface of the hole formed on the second transmission gear 19 and are used for matching with the driving groove 59 formed on the first limiting column 4, so that the purpose of driving the first limiting column 4 to move is achieved; the second transmission gear 19 is arranged in the accommodating hole 12, the second transmission gear 19 is matched with the holding rod mechanism 2, and the second transmission gear 19 is meshed with the first transmission gear 15 to drive the first limiting column 4 to move; the end face of the guide rail 35 is provided with a second T-shaped groove 48 which is used for matching with the first limiting plate 40 arranged on the first fixed shaft 39 and guiding the movement of the first fixed shaft 39; the first fixing shaft 39 is mounted on the guide rail 35 through the first limiting plate 40 and the first T-shaped groove 38 in a matching manner, and is used for fixing the first amplifying gear 37 and the second amplifying gear 46; the first amplification gear 37 is mounted on the first fixed shaft 39, and the first amplification gear 37 is engaged with the drive gear 14; the second amplifying gear 46 is mounted on the first fixed shaft 39, and the second amplifying gear 46 and the second transmission gear 19 cooperate to amplify the torque value of the shaft penetration of the motor 16; the first return spring 36 is positioned in the first T-shaped groove 38, one end of the first return spring 36 is arranged on the end face of the first T-shaped groove 38, and the other end of the first return spring 36 is arranged on the first fixed shaft 39 and is used for exerting a restoring force on the first fixed shaft 39; the inner circular surface of the connecting ring 45 is arranged on the outer circular surface of the first fixed shaft 39 to facilitate the installation of the connecting rod 41, so that the connecting rod 41 is prevented from influencing the movement of the first fixed shaft 39; the connecting rod 41 has one end mounted on the outer circumferential surface of the connecting ring 45 and the other end mounted on the second fixed shaft 42 for connecting the first fixed shaft 39 and the second fixed shaft 42.

The dumbbell is also provided with a battery and a wireless module. The normal operation of the motor is ensured.

The second weight lifting block mechanism 5 in the invention is used for providing a balance weight; the end face of the second lifting column 34 is provided with a fifth cylindrical hole 49 for facilitating the installation of the third limit column 18; the end face of the fifth cylindrical hole 49 is provided with a third T-shaped groove 51 which is not penetrated through, so that the T-shaped block 57 can conveniently slide in the groove, and the purpose of limiting the movement of the T-shaped block 57 is achieved; 4 square grooves 50 are uniformly formed in the inner circumferential surface of the fifth cylindrical hole 49 in the circumferential direction, so that the limiting block 54 is convenient to mount; two guide grooves 52 are symmetrically arranged on two side surfaces of the square groove 50 and are used for providing a guide function for the movement of the limiting block 54; the two side surfaces of the limiting block 54 are respectively provided with a first inclined surface 58 and a second inclined surface 60, so that the limiting block 54 can pass through the limiting groove 56; the effect of the angle of inclination of the first ramp 58 relative to the side of the stop block 54 being greater than the angle of inclination of the second ramp 60 is such that the amount of torque required to move the stop slot 56 in the direction of the first ramp 58 will be less than the amount of torque required to move the stop slot 60 along the second ramp 60; the third return spring 53 is positioned in the square groove 50; one end of the third spring is mounted on the end face of the reverse groove, and the other end of the third spring is mounted on the stopper 54 to exert a restoring force on the stopper 54.

The hand-held rod mechanism 2 is used for connecting the first weight lifting block mechanism 1 and the second weight lifting block mechanism 5; the end surface of the first spherical block 7 is provided with a fourth cylindrical hole 32 for facilitating the installation of the first limit column 4; the inner circular surface of the fourth cylindrical hole 32 is provided with internal threads for limiting the movement of the first limiting column 4; the second clamping groove 31 is formed on the outer spherical surface of the first spherical block 7 and is used for being matched with the first clamping ring 25 on the second spherical shell 20, so that the purpose of stabilizing the hand-held rod mechanism 2 is achieved; the first spherical block 7 is arranged on the end surface of the first lifting column 6, and the fourth cylindrical hole 32 is communicated with the first cylindrical hole 13 and is used for connecting the handheld unit 10 with the first lifting column 6; the second snap ring 27 is arranged on the inner spherical surface of the first spherical shell 11 and is used for being matched with the first snap groove 23 formed in the second spherical block 22, so that the effect of stabilizing the grab bar mechanism 2 is achieved; the end face of the fixed column 28 is provided with a through third cylindrical hole 30 for facilitating the movement of the second limit column 9; the inner circle surface of the third cylindrical hole 30 is provided with internal threads matched with external threads arranged on the outer circle surface of the second limiting column 9; the first spherical shell 11 is arranged on the end surface of the second lifting column 34 through a fixing column 28, so that the handheld unit 10 and the second lifting column 34 can be conveniently connected; the 5 hand-holding units 10 are sequentially arranged between the first spherical block 7 and the first spherical shell 11, so that the dumbbell can be conveniently held by hands; the two ends of the first limiting column 4 are provided with chamfers, so that the first limiting column 4 can smoothly pass through the joint of the first spherical block 7 and the handheld unit 10; the two ends of the 5 second limiting columns 9 are provided with chamfers, so that the second limiting columns 9 can pass through the connecting part between the two adjacent hand-holding units 10; the outer circular surfaces of the 5 second limiting columns 9 are provided with external threads which are matched with the internal threads on the inner circular surfaces of the second cylindrical holes 24, so that the purpose of limiting the movement of the second limiting columns 9 is achieved; the 5 second limiting columns 9 are arranged in the corresponding hand-held units 10 to limit the movement of the hand-held units 10; the outer circular surface of the third limiting column 18 is circumferentially and uniformly provided with 4 limiting grooves 56 which are matched with the first inclined surface 58 and the second inclined surface 60 on the limiting block 54, so that the purpose of controlling the movement of the third limiting column 18 is achieved; the first limiting columns 4, the 5 second limiting columns 9 and the third limiting columns 18 are connected through the soft rod 8, and the soft rod 8 can transmit torque; the scroll spring 33 is positioned in the fifth cylindrical hole 49, and the inner end of the scroll spring 33 is arranged on the end surface of the third limit column 18; the T-shaped block 57 is arranged on the outer end of the volute spring 33, and the T-shaped block 57 and the third T-shaped groove 51 are arranged on the second lifting column 34 in a sliding fit mode and are used for exerting a restoring force on the third limiting column 18; according to the invention, the soft rod 8 is deformed under the action of the weights of the two weight lifting columns; the soft rod 8 can transmit torque; the chamfer angles on the first limiting column 4, the second limiting column 9 and the third limiting column 18 have the same size, so that the production cost is reduced, and the aim of saving the cost is fulfilled; the outer circular surfaces of the first limiting column 4, the second limiting column 9 and the third limiting column 18 are coated with lubricating oil, so that the first limiting column 4, the second limiting column 9 and the third limiting column 18 can move better; the diameters of the first limiting column 4, the second limiting column 9 and the third limiting column 18 are the same; the same function of the apertures of the first cylindrical hole 13, the fourth cylindrical hole 32, the second cylindrical hole 24 and the third cylindrical hole 30 is to facilitate the sliding of the first limiting column 4, the second limiting column 9 and the third limiting column 18; the first and second snap rings 25 and 27 have certain elasticity to stabilize the hand-held unit 10; the inclination angle of the first inclined surface 58 relative to the side surface of the stop block 54 is 70 degrees; the angle of inclination of the second inclined surface 60 with respect to the lateral surface of the stopper 54 is 20 degrees, so that the stopper 54 can preferably achieve the purpose of limiting the third stopper post 18.

In a specific embodiment, when an exerciser needs to use the dumbbell of the present invention, the code scanning area 3 is scanned, after the code scanning, the motor 16 rotates, the rotating motor 16 drives the driving gear 14 to move, the driving gear 14 drives the first transmission gear 15 to move, and at this time, the first transmission gear 15 is acted by a driving force far away from the first T-shaped groove 38, so that the second fixing shaft 42 does not move along the direction of the first T-shaped groove 38; the moving first transmission gear 15 will drive the second transmission gear 19 to move, the second transmission gear 19 will drive the driving block 44 to move, the driving block 44 will drive the first limiting post 4 to move, the first limiting post 4 will move along its own axis under the action of the screw thread, the first limiting post 4 will transmit the torque to the third limiting post 18 under the action of the soft rod 8, the third limiting post 18 will press the limiting block 54 while rotating, so that the limiting block 54 will limit the movement of the third limiting post 18, the volute spring 33 will be compressed at this time, the motor 16 will stop rotating, the third limiting post 18 will receive the restoring force of the volute spring 33 at this time, but the movement of the third limiting post 18 will be limited under the action of the second inclined plane 60 opened on the limiting block 54, the first limiting post 4 and the second limiting post 9 will limit the movement of the hand-holding unit 10 at this time, so that the handspike mechanism 2 will not deform at this time, so that the dumbbell can be used normally, when the user is not using the dumbbell, the user needs to scan the code scanning area 3 again, the third limiting column 18 is subjected to the restoring force of the spiral spring 33, at the same time, the motor 16 will rotate in the opposite direction after the code is swept, and the moving motor 16 will impart a force to the first transmission gear 15 to move along the first T-shaped slot 38, so that the second fixed shaft 42 will move along the first T-shaped groove 38, the second fixed shaft 42 will drive the connecting rod 41 to move, the connecting rod 41 will drive the connecting ring 45 to move, the connecting ring 45 will drive the first fixed shaft 39 to move along the second T-shaped groove formed on the guide rail 35, the first fixed shaft 39 will drive the first amplifying gear 37 and the second amplifying gear 46 to move, and the first amplifying gear 37 is engaged with the driving shaft; the second amplifying gear 46 is meshed with the second transmission gear 19, the torque of the motor 16 at the moment is amplified under the action of the driving gear 14, the first amplifying gear 37, the second amplifying gear 46 and the second transmission gear 19 in sequence, the third limiting column 18 at the moment can restore the third limiting column 18 to the original position under the combined action of the restoring force of the volute spiral spring 33 and the second transmission gear 19, the third limiting column 18 can drive the soft rod 8, the second limiting column 9 and the first limiting column 4 to move, so that the first limiting column 4, the second limiting column 9 and the third limiting column 18 can not limit the movement of the hand-holding unit 10, and the hand-holding rod mechanism 2 can deform under the condition that the dumbbell at the moment does not scan codes, and the dumbbell can not be normally used; the function of using the volute spiral spring 33 to reset is to avoid using the motor 16 to reset, so that the purpose of saving electric energy is achieved, meanwhile, the using frequency of the motor 16 is low, and the power of the used motor 16 is low, so that the purposes of prolonging the service life of the dumbbell and saving energy are achieved.

Claims

1. An electronic control shared dumbbell is characterized in that: the weight-lifting device comprises a first weight-lifting block mechanism, a second weight-lifting block mechanism, a hand-held rod mechanism and a code-scanning area, wherein the hand-held rod mechanism is arranged between the first weight-lifting block mechanism and the second weight-lifting block mechanism; a code scanning area is arranged on the first weight lifting mechanism;

the first weight lifting block mechanism comprises a first weight lifting column, a containing hole, a first cylindrical hole, a driving gear, a first transmission gear, a motor, a second transmission gear, a guide rail, a first return spring, a first amplifying gear, a first T-shaped groove, a first fixed shaft, a first limiting plate, a connecting rod, a second fixed shaft, a second return spring, a driving block, a connecting ring, a second amplifying gear, a second limiting plate and a second T-shaped groove, wherein the end face of the first weight lifting column is provided with the first cylindrical hole; an internal thread is arranged on the inner circular surface of the first cylindrical hole; the inner circle surface of the first cylindrical hole is provided with a containing hole; the end face of the accommodating hole is provided with a first T-shaped groove; the end face of the motor is arranged on the end face, far away from the first T-shaped groove, of the accommodating hole; the driving gear is arranged on a shaft of the motor; a second limiting plate is arranged on the end face of the second fixed shaft; the second fixed shaft is arranged in the accommodating hole through the matching of a second limiting plate and the first T-shaped groove; the first transmission gear is arranged on the second fixed shaft through a bearing and is meshed with the driving gear; the second return spring is positioned in the first T-shaped groove; one end of a second return spring is arranged on the end surface of the first T-shaped groove, and the other end of the second return spring is arranged on a second fixed shaft; the two driving blocks are symmetrically arranged on the inner circular surface of the hole on the second transmission gear; the second transmission gear is arranged in the accommodating hole, is matched with the hand-held rod mechanism and is meshed with the first transmission gear; a second T-shaped groove is formed in the end face of the guide rail; the guide rail is arranged on the end face of the accommodating hole; the guide rail and the first T-shaped groove are distributed in parallel; a first limiting plate is arranged on the end face of the first fixed shaft; the first fixed shaft is matched with the first T-shaped groove through a first limiting plate and is arranged on the guide rail; the first amplifying gear is arranged on the first fixed shaft and matched with the driving gear; the second amplifying gear is arranged on the first fixed shaft and matched with the second transmission gear; the first return spring is positioned in the first T-shaped groove, one end of the first return spring is arranged on the end face of the first T-shaped groove, and the other end of the first return spring is arranged on the first fixed shaft; the inner circular surface of the connecting ring is arranged on the outer circular surface of the first fixed shaft; one end of the connecting rod is arranged on the outer circular surface of the connecting ring, and the other end of the connecting rod is arranged on the second fixed shaft;

the second weight lifting block mechanism comprises a second weight lifting column, a fifth cylindrical hole, a square groove, a third T-shaped groove, a guide groove, a third return spring, a limiting block, a guide block, a first inclined plane and a second inclined plane, wherein the fifth cylindrical hole is formed in the end face of the second weight lifting column; a third T-shaped groove which is not communicated is formed in the end face of the fifth cylindrical hole; 4 square grooves are uniformly formed in the inner circular surface of the fifth cylindrical hole in the circumferential direction; the structure and the installation structure of each square groove are completely the same, and for one of the square grooves, two guide grooves are symmetrically formed on the two side surfaces of the square groove; the two side surfaces of the limiting block are respectively provided with a first inclined surface and a second inclined surface; the inclination angle of the first inclined plane relative to the side surface of the limiting block is larger than that of the second inclined plane; the two guide blocks are symmetrically arranged on the two side surfaces of the limiting block; the limiting block is arranged in the square groove through the matching of the guide block and the guide groove and is matched with the hand-held rod mechanism; the third return spring is positioned in the square groove; one end of the third spring is arranged on the end face of the reverse groove, and the other end of the third spring is arranged on the limiting block;

the holding rod mechanism comprises a first limiting column, a first spherical block, a soft rod, a second limiting column, a holding unit, a first spherical shell, a third limiting column, a second clamping ring, a fixing column, a third cylindrical hole, a second clamping groove, a fourth cylindrical hole, a volute spring, a limiting groove, a T-shaped block and a driving groove, wherein the end surface of the first spherical block is provided with the fourth cylindrical hole; an internal thread is formed on the inner circular surface of the fourth cylindrical hole; a second clamping groove is formed in the outer spherical surface of the first spherical block; the first spherical block is arranged on the end face of the first lifting column, and the fourth cylindrical hole is communicated with the first cylindrical hole; a second snap ring is arranged on the inner spherical surface of the first spherical shell; a third through cylindrical hole is formed in the end face of the fixed column; the inner circular surface of the third cylindrical hole is provided with internal threads; the first spherical shell is installed on the end face of the second lifting column through a fixing column; 5 hand-held units are sequentially arranged between the first spherical block and the first spherical shell; chamfers are arranged at two ends of the first limiting column; the outer circular surface of the first limiting column is provided with an external thread; the end surface of the first limiting column is provided with a drive groove which is not communicated; the first limiting column is in threaded fit with the first cylindrical hole and the fourth cylindrical hole; chamfers are arranged at two ends of the 5 second limiting columns; external threads are formed on the outer circular surfaces of the 5 second limiting columns; 5 second limiting columns are arranged in the corresponding hand holding units; 4 limiting grooves are uniformly formed in the outer circular surface of the third limiting column in the circumferential direction; the third limiting column is arranged in the fifth cylindrical hole; the first limiting column, the 5 second limiting columns and the third limiting column are connected through a soft rod; the scroll spring is positioned in the fifth cylindrical hole, and the inner end of the scroll spring is arranged on the end surface of the third limiting column; the T-shaped block is arranged at the outer end of the volute spiral spring, and the T-shaped block and the third T-shaped groove are arranged on the second lifting column in a sliding fit manner;

the hand-holding unit comprises a second spherical shell, a connecting column, a second spherical block, a first clamping groove, a second cylindrical hole and a first clamping ring, wherein the first clamping ring is arranged on the inner spherical surface of the second spherical shell; a first clamping groove is formed in the outer spherical surface of the second spherical block; the second spherical shell is connected with the second spherical block through a connecting column; the connecting column and the second spherical block are both provided with second cylindrical holes; an internal thread is formed on the inner circular surface of the second cylindrical hole; the 5 hand-held units are sequentially installed through the matching of the inner spherical surface of the second spherical shell and the outer spherical surface of the second spherical block, and the first clamping ring is matched with the first clamping groove;

2. An electrically controlled shared dumbbell according to claim 1, characterized in that: the connecting ring is mounted on the first fixed shaft through a bearing.

3. An electrically controlled shared dumbbell according to claim 1, characterized in that: the chamfer angles on the first limiting column, the second limiting column and the third limiting column are the same in size.

4. An electrically controlled shared dumbbell according to claim 1, characterized in that: the first amplifying gear is mounted on the first fixed shaft through a key.

5. An electrically controlled shared dumbbell according to claim 1, characterized in that: and lubricating oil is coated on the outer circular surfaces of the first limiting column, the second limiting column and the third limiting column.

6. An electrically controlled shared dumbbell according to claim 1, characterized in that: the diameters of the first limiting column, the second limiting column and the third limiting column are the same; the first cylindrical hole, the fourth cylindrical hole, the second cylindrical hole and the third cylindrical hole have the same aperture.

7. An electrically controlled shared dumbbell according to claim 1, characterized in that: the first snap ring and the second snap ring have certain elasticity.

8. An electrically controlled shared dumbbell according to claim 1, characterized in that: the inclination angle of the first inclined plane relative to the side surface of the limiting block is 70 degrees; the inclination angle of the second inclined plane relative to the side surface of the limiting block is 20 degrees.