CN218761178U

CN218761178U - Rope resistance transmission mechanism

Info

Publication number: CN218761178U
Application number: CN202223316128.8U
Authority: CN
Inventors: 孙宇
Original assignee: Sunshine Dealer Co
Current assignee: Sunshine Dealer Co
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-03-28
Anticipated expiration: 2032-12-09

Abstract

The utility model discloses a rope resistance transmission mechanism, which comprises a symmetrical pull rope component, a transmission component and a resistance component; the pull rope assembly comprises a pull rope, a first fixed pulley, a movable pulley block and a second fixed pulley block, the movable pulley block comprises a left movable pulley and a right movable pulley, the second fixed pulley block comprises a second left fixed pulley and a second right fixed pulley, after the pull rope winds around the first fixed pulley, two ends of the pull rope symmetrically extend backwards and respectively wind around the left movable pulley and the right movable pulley, then two ends of the pull rope are folded and forwardly extend respectively wind around the second left fixed pulley and the second right fixed pulley, and two ends of the pull rope wind around the second left fixed pulley and the second right fixed pulley and are respectively connected with a pull handle; the two pull handles pull the movable pulley block to rotate and slide through the pull rope, the first fixed pulley and the second fixed pulley block; and a third fixed pulley is arranged between the movable pulley block and the transmission assembly and is connected with the resistance assembly through the transmission assembly. The whole mechanism is convenient to bear, high in stability and capable of adjusting the tensile strength.

Description

Rope resistance transmission mechanism

Technical Field

The utility model relates to a resistance mechanism technical field, in particular to rope hinders drive mechanism.

Background

The resistance mechanism is a mechanism which provides resistance to movement and reduces the energy of the movement. Various resistance devices have been used for reducing vibration and energy in the industries of aerospace, aviation, war industry, guns, automobiles and the like. Resistance mechanisms are also needed to be used on a plurality of devices in daily life and production and processing, such as a chest expander, a rowing machine and the like needed in the field of fitness equipment. The resistance mechanism is commonly a pull rope tension mechanism, the existing pull rope mechanism usually forms resistance through the matching of a single pull rope and a fixed pulley, a user overcomes the resistance of the pull rope to pull the pull rope, the structure is basically a single-line operation mode, and the single rope is low in tension strength and uneven in stress.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rope hinders drive mechanism, and the atress is convenient, and stability is high, and can adjust tensile strength.

To achieve the above object, the solution of the present invention is: a rope resistance transmission mechanism comprises a symmetrical rope pulling component, a transmission component and a resistance component;

the pull rope assembly comprises a pull rope, a first fixed pulley, a movable pulley block and a second fixed pulley block, the second fixed pulley block is positioned above the first fixed pulley, the rotation direction of the second fixed pulley block is vertical to the rotation direction of the first fixed pulley, the movable pulley block comprises a left movable pulley and a right movable pulley, the second fixed pulley block comprises a second left fixed pulley and a second right fixed pulley, after the pull rope bypasses the first fixed pulley, two ends of the pull rope symmetrically extend backwards, respectively bypass the left movable pulley and the right movable pulley, then two ends of the pull rope are folded and extend forwards to respectively bypass the second left fixed pulley and the second right fixed pulley, and two ends of the pull rope bypass the second left fixed pulley and the second right fixed pulley and then are respectively connected with a pull handle; the two pull handles pull the movable pulley block to rotate and slide through the pull rope, the first fixed pulley and the second fixed pulley block;

and a third fixed pulley is arranged between the movable pulley block and the transmission assembly and is connected with the resistance assembly through the transmission assembly.

Further, the transmission assembly and the resistance assembly are both located below the pull rope assembly.

Furthermore, the transmission assembly comprises a main transmission belt, an auxiliary transmission belt, a driving wheel and a driven wheel, wherein the driving wheel and the driven wheel are arranged in parallel, one end of the main transmission belt is fixedly connected with the driving wheel, the other end of the main transmission belt bypasses the third fixed pulley and is fixedly connected with the movable pulley block, and a transmission shaft of the driven wheel is connected with the driving wheel through the auxiliary transmission belt and is driven by the driving wheel.

Further, the resistance assembly comprises a first magnetic part arranged on the periphery of the driven wheel and a second magnetic part arranged on the outer side of the first magnetic part, a distance is reserved between the first magnetic part and the second magnetic part, and the first magnetic part and the second magnetic part are matched to generate a magnetic resistance force so as to limit the rotation rate of the driven wheel.

Further, second magnetism spare is the arc, and the both ends of second magnetism spare are stiff end and free end respectively, the stiff end is fixed the below of first magnetism spare, the free end swing is close to or keeps away from first magnetism spare.

Further, still include resistance adjustment assembly, resistance adjustment assembly includes adjust knob, regulating tube and regulating plate, the regulating plate sets up on the second magnetism spare, the regulating tube activity set up in on the regulating plate to drive the regulating plate up-and-down motion, still be connected with reset spring on the regulating plate, adjust knob passes through regulating tube, regulating plate and reset spring and drives the second magnetism spare and be close to or keep away from first magnetism spare.

Further, the resistance adjustment subassembly still includes the fixed plate, the fixed plate is fixed in regulating plate top, logical groove has been seted up on the regulating plate, the fixed plate with the through-hole has been seted up to the position that leads to the groove and corresponds, the regulating tube includes outer tube and inner tube, the outer tube is fixed in the through-hole of fixed plate, the lower extreme of inner tube is T type end cap, the inner tube passes the outer tube and leads to the groove, the lower terminal surface butt of T type end cap and regulating plate.

Furthermore, a fourth fixed pulley is arranged between the pull handle and the pull rope, the pull rope bypasses the fourth fixed pulley to be connected with the pull handle, and a rotating part is arranged at the fourth fixed pulley and rotates to drive the pull handle to rotate.

Furthermore, a pressing wheel is arranged between the transmission shaft of the driven wheel and the driving wheel and is tightly pressed on the upper part of the auxiliary transmission belt, so that the auxiliary transmission belt is tightly attached to the transmission shaft of the driven wheel.

Furthermore, a U-shaped mounting block is arranged on the movable pulley block, two sides of a U-shaped opening of the mounting block are connected with two ends of a wheel shaft of the movable pulley, and the bottom of the outer side of the mounting block is fixed with the main transmission belt through a locking piece.

After the technical scheme is adopted, the beneficial effects of the utility model reside in that: realize stay cord drive mechanism's two play rope structures through the stay cord subassembly that sets up the symmetry, the stay cord subassembly includes multiunit fixed pulley and movable pulley, and behind fixed pulley and the movable pulley were walked around to the both ends of single stay cord, draw respectively with two of symmetry and be connected, two draw can make the atress even hard simultaneously, and the present case uses the setting that single rope realized two play ropes to strengthen the pulling force of mechanism greatly, has also improved mechanism stability simultaneously.

Drawings

FIG. 1 is an assembly view of an embodiment of the present invention;

fig. 2 is an exploded view of a pull cord assembly according to an embodiment of the present invention;

fig. 3 is an exploded view of the resistance assembly and resistance adjustment assembly according to an embodiment of the present invention.

Description of reference numerals:

1. a pull cord assembly; 11. pulling a rope; 12. a first fixed pulley; 13. a movable pulley block; 131. a left movable pulley; 132. a right movable pulley; 14. a second fixed pulley block; 141. a second left fixed pulley; 142. a second right fixed pulley; 15. a third fixed pulley; 16. a fourth fixed pulley; 161. a fourth left fixed pulley; 162. a fourth right fixed pulley; 2. a transmission assembly; 21. a main drive belt; 22. a secondary drive belt; 23. a driving wheel; 24. a driven wheel; 25. a pinch roller; 3. a resistance assembly; 31. a first magnetic member; 32. a second magnetic member; 4. a resistance adjustment assembly; 41. adjusting a knob; 42. a return spring; 43. an adjusting plate; 44. a through groove; 45. a fixing plate; 46. a through hole; 47. an outer tube; 48. an inner tube; 5. pulling a handle; 6. a rotating member; 7. mounting blocks; 8. and a locking member.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

The utility model provides a rope hinders drive mechanism, as shown in fig. 1 to 3, stay cord subassembly 1, drive assembly 2, resistance subassembly 3 and resistance adjusting part 4 including the symmetry. The present case all sets up drive assembly 2, resistance subassembly 3 and resistance adjustment subassembly 4 in the below of stay cord subassembly 1, makes whole rope like this hinder drive mechanism and is the triangle-shaped structure, compact structure, the at utmost space has been saved.

As shown in fig. 2, the pulling rope assembly 1 includes a pulling rope 11, a first fixed pulley 12, a movable pulley block 13, and a second fixed pulley block 14, the second fixed pulley block 14 is located above the first fixed pulley 12, and the rotation direction of the second fixed pulley block 14 is perpendicular to the rotation direction of the first fixed pulley 12, and the second fixed pulley block 14 rotates in the same direction as the first fixed pulley 12. The pull rope 11 is connected with the pull handle 5 by sequentially passing through the first fixed pulley 12, the movable pulley block 13 and the second fixed pulley block 14.

Specifically, the movable pulley group 13 includes a left movable pulley 131 and a right movable pulley 132, and the second fixed pulley group 14 includes a second left fixed pulley 141 and a second right fixed pulley 142. After passing around the first fixed pulley 12, the rope 11 extends symmetrically backward at both ends thereof and passes around the left movable pulley 131 and the right movable pulley 132, respectively. After respectively winding around the left movable pulley 131 and the right movable pulley 132 from bottom to top, the two ends of the pull rope 11 are folded and extend forwards to respectively wind around the second left fixed pulley 141 and the second right fixed pulley 142 which are positioned above the first fixed pulley 12, and after winding around the second fixed pulley group 14, the two ends of the pull rope 11 respectively extend towards the two sides and are respectively connected with a pull handle 5. As can be seen from the above, the two pull handles 5 pull the movable pulley block 13 to rotate and slide through the pull rope 11, the first fixed pulley 12 and the second fixed pulley block 14.

As shown in fig. 2, in order to adjust the angle of the pull handle 5 and meet various requirements, a fourth fixed pulley 16 is arranged between the pull handle 5 and the pull rope 11, the fourth fixed pulley 16 comprises a fourth left fixed pulley 161 and a fourth right fixed pulley 162, two ends of the pull rope 11 respectively pass through the left movable pulley 131 and the right movable pulley 132, then pass through the fourth left fixed pulley 161 and the fourth right fixed pulley 162, and then are connected with the pull handles 5 on two sides, a rotating member 6 is arranged on the fourth fixed pulley 16, and the angle of the pull handle 5 is adjusted by the fourth fixed pulley 16 through the rotating member 6.

A third fixed pulley 15 is arranged between the movable pulley block 13 and the transmission component 2, and the third fixed pulley 15 is connected with the resistance component 3 through the transmission component 2.

As shown in fig. 1, the transmission assembly 2 includes a main transmission belt 21, a secondary transmission belt 22, and a driving pulley 23 and a driven pulley 24 arranged in parallel, wherein the driving pulley 23 is at a level slightly lower than the driven pulley 24. One end and the action wheel 23 fixed connection of final drive belt 21, the other end is walked around third fixed pulley 15 and running block 13 fixed connection, and wherein, the connected mode of running block 13 and final drive belt 21 is: the movable pulley block 13 is provided with a U-shaped mounting block 7, the left movable pulley 131 and the right movable pulley 132 are arranged in a U-shaped opening of the mounting block 7, two sides of the U-shaped opening of the mounting block 7 are connected with two ends of a wheel shaft of the movable pulley block 13, and the bottom of the outer side of the mounting block 7 is fixed with the main transmission belt 21 through a locking piece 8, so that the movable pulley block 13 slides and drives the driving wheel 23 to rotate through the main transmission belt 21. And the driving wheel 23 is connected with the driven wheel 24 through the secondary transmission belt 22, and the driving wheel 23 rotates to drive the driven wheel 24 to rotate through the secondary transmission belt 22.

In order to prevent the secondary transmission belt 22 from loosening in the transmission process, a pressing wheel 25 is additionally arranged between the transmission shaft of the driven wheel 24 and the driving wheel 23, and the vertical position and the horizontal position of the pressing wheel 25 are both positioned between the transmission shaft of the driven wheel 24 and the driving wheel 23, so that the pressing wheel 25 can press the secondary transmission belt 22 downwards from the upper part of the secondary transmission belt 22, the secondary transmission belt 22 is tightly attached to the transmission shaft of the driven wheel 24, the contact area between the secondary transmission belt 22 and the transmission shaft of the driven wheel 24 is increased, friction is increased, and the loosening of the secondary transmission belt 22 is effectively prevented.

The working process of the rope resistance transmission mechanism is as follows:

the two pull handles 5 are pulled by external force, the two pull handles 5 drive the movable pulley block 13 to slide through the pull rope 11, the first fixed pulley 12 and the second fixed pulley block 14, the movable pulley block 13 slides to drive the driving wheel 23 to rotate through the main transmission belt 21, the driving wheel 23 rotates to drive the driven wheel 24 to rotate through the auxiliary transmission belt 22, and the resistance component 3 on the driven wheel 24 provides magnetic resistance for the mechanism.

Resistance component 3 can be various, for example resistance component 3's resistance can derive from the pulling force of coil spring, the elasticity of stretch cord etc. the present case does not do the restriction, resistance component 3 can also be the magnetic resistance mechanism (magnetic resistance mechanism for short) that this embodiment provided, magnetic resistance mechanism includes first magnetic part 31 and second magnetic part 32, first magnetic part 31 sets up in the periphery of following driving wheel 24, second magnetic part 32 sets up in the outside of first magnetic part 31, leave the interval between first magnetic part 31 and the second magnetic part 32, the size of magnetic force has been decided to the interval between first magnetic part 31 and the second magnetic part 32. The first magnetic member 31 and the second magnetic member 32 cooperate to generate a detent force to limit the rotational rate of the driven wheel 24. In this embodiment, the second magnetic member 32 is arc-shaped, and the arc of the second magnetic member 32 is the same as the arc of the first magnetic member 31, and the two ends of the second magnetic member 32 are respectively a free end and a fixed end, the fixed end is fixed below the first magnetic member 31, and the free end swings to be close to or far away from the first magnetic member 31, so as to increase or decrease the magnetic resistance.

The amount of resistance of the resistance assembly 3 can be adjusted by fine adjustment means, as shown in figure 3. The fine adjustment device is a resistance adjustment assembly 4, the resistance adjustment assembly 4 comprises an adjustment knob 41, a fixing plate 45, an adjustment plate 43, an adjustment tube and a return spring 42, wherein the adjustment tube comprises an outer tube 47 and an inner tube 48, and the inner tube 48 is movably arranged in the outer tube 47. The adjusting plate 43 is arranged on the second magnetic member 32 and connected with the free end of the second magnetic member 32, the fixing plate 45 is located above the adjusting plate 43, a through groove 44 is formed in the adjusting plate 43, a through hole 46 is formed in the fixing plate 45 at a position corresponding to the through groove 44, the outer tube 47 is fixed in the through hole 46 of the fixing plate 45, the upper end of the inner tube 48 is connected with the adjusting knob 41, and the lower end of the inner tube passes through the through groove 44 in the outer tube 47 and the adjusting plate 43.

The working principle of the resistance adjusting assembly 4 is as follows:

when the adjusting knob 41 is screwed, the inner tube 48 moves upwards, the T-shaped end cap of the inner tube 48 abuts against the bottom of the adjusting plate 43 and drives the adjusting plate 43 to move upwards, the adjusting plate 43 drives the second magnetic piece 32 to be close to the first magnetic piece 31, the distance between the first magnetic piece 31 and the second magnetic piece 32 is reduced, the magnetism is increased, the transmission rate of the transmission assembly 2 is reduced at the moment to increase the resistance of the pull handle 5, and the return spring 42 is in a stretching state at the moment;

when the adjusting knob 41 is unscrewed, the inner tube 48 moves downwards, the T-shaped end cap of the inner tube 48 does not abut against the adjusting plate 43 any more, the adjusting plate 43 is driven to move downwards to reset by contraction of the return spring 42, the adjusting plate 43 drives the second magnetic piece 32 to be far away from the first magnetic piece 31, the distance between the first magnetic piece 31 and the second magnetic piece 32 is increased, the magnetism is reduced, and at the moment, the transmission speed of the transmission assembly 2 is increased to reduce the resistance of the pull handle 5.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the design of the present application, and all equivalent changes made according to the design key of the present application fall within the protection scope of the present application.

Claims

1. The utility model provides a rope hinders drive mechanism which characterized in that: comprises a pull rope component, a transmission component and a resistance component which are symmetrical;

and a third fixed pulley is arranged between the movable pulley block and the transmission assembly, and the third fixed pulley is connected with the resistance assembly through the transmission assembly.

2. A rope resistance drive mechanism as claimed in claim 1, wherein: the transmission assembly and the resistance assembly are both positioned below the pull rope assembly.

3. A rope resistance drive mechanism as claimed in claim 1 or 2, wherein: the transmission assembly comprises a main transmission belt, an auxiliary transmission belt, a driving wheel and a driven wheel, the driving wheel and the driven wheel are arranged in parallel, one end of the main transmission belt is fixedly connected with the driving wheel, the other end of the main transmission belt bypasses the third fixed pulley and is fixedly connected with the movable pulley block, and a transmission shaft of the driven wheel is connected with the driving wheel through the auxiliary transmission belt and driven by the driving wheel.

4. A rope resistance drive mechanism as claimed in claim 3, wherein: the resistance assembly comprises a first magnetic part and a second magnetic part, the first magnetic part is arranged on the periphery of the driven wheel, the second magnetic part is arranged on the outer side of the first magnetic part, a gap is reserved between the first magnetic part and the second magnetic part, and the first magnetic part and the second magnetic part are matched to generate magnetic resistance force so as to limit the rotation rate of the driven wheel.

5. A rope resistance drive mechanism according to claim 4, wherein: the second magnetism spare is the arc, and the both ends of second magnetism spare are stiff end and free end respectively, the stiff end is fixed the below of first magnetism spare, the free end swing is close to or keeps away from first magnetism spare.

6. A rope resistance drive mechanism according to claim 4, wherein: still include resistance adjustment assembly, resistance adjustment assembly includes adjust knob, regulating tube and regulating plate, the regulating plate sets up on second magnetic part, the regulating tube activity set up in on the regulating plate to drive regulating plate up-and-down motion, still be connected with reset spring on the regulating plate, adjust knob drives second magnetic part through regulating tube, regulating plate and reset spring and is close to or keeps away from first magnetic part.

7. A rope resistance drive mechanism as defined in claim 6, wherein: resistance adjusting part still includes the fixed plate, the fixed plate is fixed in regulating plate top, logical groove has been seted up on the regulating plate, the fixed plate with the through-hole has been seted up to the position that leads to the groove and corresponds, the regulating tube includes outer tube and inner tube, the outer tube is fixed in the through-hole of fixed plate, the lower extreme of inner tube is T type end cap, the inner tube passes the outer tube and leads to the groove, the lower terminal surface butt of T type end cap and regulating plate.

8. A rope resistance drive mechanism as claimed in claim 1, wherein: a fourth fixed pulley is arranged between the pull handle and the pull rope, the pull rope bypasses the fourth fixed pulley to be connected with the pull handle, a rotating piece is arranged at the position of the fourth fixed pulley, and the rotating piece rotates to drive the pull handle to rotate.

9. A rope resistance drive mechanism as claimed in claim 3, wherein: a pressing wheel is arranged between the transmission shaft of the driven wheel and the driving wheel and is pressed on the upper portion of the auxiliary transmission belt, so that the auxiliary transmission belt is tightly attached to the transmission shaft of the driven wheel.

10. A rope resistance drive mechanism as claimed in claim 3, wherein: the movable pulley block is provided with a U-shaped mounting block, two sides of a U-shaped opening of the mounting block are connected with two ends of a wheel shaft of the movable pulley, and the bottom of the outer side of the mounting block is fixed with the main transmission belt through a locking piece.