CN215275587U - Line structure is received to chest expander and uses its chest expander - Google Patents
Line structure is received to chest expander and uses its chest expander Download PDFInfo
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- CN215275587U CN215275587U CN202121644165.4U CN202121644165U CN215275587U CN 215275587 U CN215275587 U CN 215275587U CN 202121644165 U CN202121644165 U CN 202121644165U CN 215275587 U CN215275587 U CN 215275587U
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Abstract
The utility model relates to a chest expander technical field discloses a chest expander line structure and use its chest expander. The utility model provides a line structure is received to chest expander, including the casing, be equipped with the export on the casing, be equipped with reel and stay cord in the casing, stay cord one end twines on the reel, and outside the other end passed the export and extended to the casing, the exit was equipped with receives the line subassembly, receives the line subassembly including the third live-rollers and the fourth live-rollers that set up in pairs, and third live-rollers and fourth live-rollers are located and are close to export one side, and the stay cord passes the clearance that third live-rollers and fourth live-rollers formed. The utility model provides a lean on the outside in the export, in pairs set up third live-rollers and fourth live-rollers, produce when the stay cord and export and interfere, then can produce rolling friction with third live-rollers or fourth live-rollers, and the friction that effectively alleviates the stay cord is impaired, has prolonged the life of stay cord.
Description
Technical Field
The utility model relates to a chest expander technical field has especially related to a chest expander line structure and applied its chest expander.
Background
At present, the electronic chest expander is taken as fitness equipment, and is more and more popular due to the advantages of small size, convenience in carrying, no limitation of the exercise field and the like. For example, chinese patent No. 2019209053568 discloses a chest expander, which comprises a torque-controllable motor and a tension mechanism, wherein the motor transmits the torque required by the user to the rope on the reel, and the force varies according to the actual use requirement of the user.
However, in actual use, when the exerciser pulls the rope back and forth, the following problems occur:
first, the rope interferes with the wall surface of the chest-developer outlet during the use of the chest-developer, and the rope is damaged by friction.
The second, when the exerciser relaxes the stay cord, when the rope twines on the reel, there is certain random removal in the stay cord, and then twines on the reel, so, more friction can exist with the reel in the stay cord, when the exerciser pulls out the stay cord once more, because the elasticity of stay cord on the reel differs, the stay cord can slide on the reel, influences the smooth output pulling force of chest expander, and then influences exerciser's use and feels and temper the effect.
And the sliding friction between the rope and the wall surface of the outlet can cause the rope to be seriously damaged, so that the chest expander can not be used finally, and the service life of the chest expander is seriously influenced.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art not enough, one of the purposes of the utility model provides a line structure is received to chest expander, adjacent exit, the assembly can carry out spacing line subassembly to the stay cord, in the chest expander use, when the stay cord is about to produce with the export and interferes, then can produce rolling friction with the live-rollers of receiving the line subassembly, effectively avoid the stay cord direct with export wall sliding friction, effectively alleviate the friction of stay cord impaired, prolonged the life of stay cord.
A second object of the utility model is to provide an exit is equipped with chest expander of line structure of receiving, and it is impaired to have reduced the friction of chest expander stay cord, improves the whole life of chest expander.
In order to realize the utility model discloses an one of the purpose adopts following technical scheme to realize:
the utility model provides a line structure is received to chest expander, includes the casing, be equipped with the export on the casing, be equipped with reel and stay cord in the casing, stay cord one end twine in on the reel, the other end passes the export extends to outside the casing, the exit is equipped with receives the line subassembly, it includes third live-rollers and the fourth live-rollers that set up in pairs to receive the line subassembly, third live-rollers and fourth live-rollers are located and are close to export one side, the stay cord passes third live-rollers with the clearance that the fourth live-rollers formed.
The utility model provides a line structure is received to chest expander, adjacent export, in pairs sets up third live-rollers and fourth live-rollers, in the chest expander use, when the stay cord is about to produce with the export and interferes, then can produce rolling friction with third live-rollers or fourth live-rollers, effectively avoid the stay cord direct with export outside sliding friction, effectively alleviate the friction of stay cord impaired, prolonged the life of stay cord.
As a preferable technical measure: the third rotating roller and the fourth rotating roller are close to each other, so that the pulling rope is always kept in a clamped state. Use third live-rollers and fourth live-rollers to grasp the stay cord for the stay cord between reel and the receipts line subassembly remains the tensioning state throughout in the chest expander use, so, at the reciprocal rotation in-process of reel, the winding that the stay cord can be orderly is on the reel.
When the exerciser loosens the pull rope, the rope can be orderly wound on the winding wheel, and random and irregular winding of the pull rope is effectively avoided; further, when the exerciser pulled out the stay cord once more, because the even orderly winding of stay cord on the reel, the stay cord can not slide on the reel for the chest expander can smooth output pulling force, and then effectively ensures that exerciser's use is felt and is tempered the effect.
As a preferable technical measure: the wire take-up assembly further comprises outer rotating rollers which are arranged on two sides of the pull rope in pairs, the outer rotating rollers are arranged on one side, close to the outlet, of the third rotating roller, and the rotating shaft of the outer rotating rollers is perpendicular to the rotating shaft of the third rotating roller.
Set up the outside live-rollers in the direction perpendicular with the stay cord, avoided the direct sliding friction in stay cord edge and the export outside to turning into the rolling friction between stay cord and the outside live-rollers with the sliding friction that the stay cord edge received, greatly reduced the friction harm that the stay cord edge received, improved the life of stay cord.
As a preferable technical measure: the wire take-up assembly comprises a first rotating roller and a second rotating roller which are arranged in pairs, the first rotating roller and the second rotating roller are arranged close to one side of the reel, and the pull rope penetrates through a gap formed by the first rotating roller and the second rotating roller. The outlet is close to one side of the reel, the first rotating roller and the second rotating roller are arranged in pairs, when the winding thickness of the stay cord on the reel is changed in a reciprocating mode, the stay cord always keeps rolling friction with the first rotating roller or the second rotating roller instead of directly sliding friction with the inner side of the outlet, the friction of the stay cord is effectively reduced, and the service life of the stay cord is prolonged.
As a preferable technical measure:
first live-rollers with the second live-rollers respectively with can the pivoted mode set up in the casing, first live-rollers is connected and can be relative with the third live-rollers swings under the elastic component spring action, the second live-rollers with the fourth live-rollers is connected and can be relative the fourth live-rollers swings under the elastic component spring action, simple structure is practical.
As a preferable technical measure:
first live-rollers and second live-rollers swing each other under elastic component spring action and are close to, make the stay cord remains throughout by the clamping state for the stay cord remains the tensioning state throughout in the chest expander use, so, at the reciprocal rotation in-process of reel, the winding that the stay cord can be orderly is on the reel.
When the exerciser loosens the pull rope, the rope can be orderly wound on the winding wheel, and random and irregular winding of the pull rope is effectively avoided; further, when the exerciser pulled out the stay cord once more, because the even orderly winding of stay cord on the reel, the stay cord can not slide on the reel for the chest expander can smooth output pulling force, and then effectively ensures that exerciser's use is felt and is tempered the effect.
In order to realize the utility model discloses an one of the purpose adopts following technical scheme to realize:
a line-taking-up structure of a chest expander,
comprises a shell with a cavity, a pull rope and a winding wheel capable of winding the pull rope;
an outlet is arranged on the shell;
the reel is arranged in the cavity of the shell;
one end of the pull rope is wound on the reel, and the other end of the pull rope penetrates through the outlet and extends out of the shell.
A wire take-up component capable of abutting against the pull rope is assembled at the outlet;
the wire take-up assembly comprises a third rotating roller and a fourth rotating roller which can limit the moving position of the pull rope;
the third rotating roller and the fourth rotating roller are respectively arranged at the edge of the shell in a rotatable manner;
the pull rope penetrates through a limiting gap formed by the third rotating roller and the fourth rotating roller and is in rolling sliding abutting joint with the third rotating roller and the fourth rotating roller.
The utility model provides a line structure is received to chest expander, adjacent exit, in pairs sets up third live-rollers and fourth live-rollers, in the chest expander use, when the stay cord is about to produce with the export and interferes, then can produce rolling friction with third live-rollers or fourth live-rollers, effectively avoid the stay cord direct to produce sliding friction with the wall of export, effectively alleviate the friction of stay cord impaired, prolonged the life of stay cord.
As a preferable technical measure:
the third rotating roller is connected with a first rotating roller in a swinging mode through an elastic piece I;
the fourth rotating roller is connected with a second rotating roller in a swinging mode through a second elastic piece;
the first rotating roller and the second rotating roller are matched with each other under the action of the elastic piece to clamp the pull rope, so that the pull rope is kept in a tensioning state;
an outer rotating roller which is adjacent to the third rotating roller and used for limiting the movement of the pulling rope towards the end part direction of the pulling rope;
and the rotating shaft of the outer rotating roller is perpendicular to the rotating shaft of the third rotating roller, so that the outer rotating roller can slide and limit the pull rope.
Set up the outside live-rollers in the direction perpendicular with the stay cord, avoided the direct sliding friction in stay cord edge and the export outside to turning into the rolling friction between stay cord and the outside live-rollers with the sliding friction that the stay cord edge received, greatly reduced the friction harm that the stay cord edge received, improved the life of stay cord.
As a preferable technical measure: the first elastic part is a spring or a tension spring or a torsion spring and is assembled on the first connecting part, the first connecting part is of a sheet structure, one end of the first connecting part is rotatably connected with the first rotating roller, and the other end of the first connecting part is connected with the third rotating roller;
the second elastic part is a spring or a tension spring or a torsion spring and is assembled on the second connecting part, the second connecting part is of a sheet structure, one end of the second connecting part is rotatably connected with the second rotating roller, and the other end of the second connecting part is connected with the fourth rotating roller.
For realizing the second purpose of the utility model, the following technical scheme is adopted to realize:
a chest expander comprises the chest expander wire take-up structure.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model provides a line structure is received to chest expander, adjacent exit, the assembly can carry out spacing receipts line subassembly to the stay cord, in the chest expander use, when the stay cord is about to produce with the export and interferes, then can produce rolling friction with the live-rollers of receiving the line subassembly, effectively avoid the stay cord direct with export wall sliding friction, it is impaired effectively to alleviate the friction of stay cord, has prolonged the life of stay cord.
The utility model provides a line structure is received to chest expander, assembly chest expander, in the chest expander use, when the stay cord is about to produce the interference with the export, then can produce rolling friction with the live-rollers of receiving the line subassembly, effectively avoid the stay cord direct with export wall sliding friction, effectively alleviate the friction of stay cord impaired, prolonged the life of stay cord.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a part of the structure of the present invention;
fig. 3 is a full sectional view of the utility model A-A.
In the figure: 1. a housing; 2. an outlet; 3. a reel; 4. pulling a rope; 5. a first rotating roller; 6. a second rotating roller; 7. a third rotating roller; 8. a fourth rotating roller; 9. an inside turning roller; 10. an outer rotating roller; 11. a first elastic part; 12. and a first connecting piece.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1, fig. 2, fig. 3, a line structure is received to chest expander, including casing 1, be equipped with export 2 on the casing 1, be equipped with reel 3 and stay cord 4 in the casing 1, 4 one ends of stay cord twine in on the reel 3, the other end passes export 2 and extend to outside the casing 1, export 2 department is equipped with receives the line subassembly, receive the line subassembly including third live-rollers 7 and the fourth live-rollers 8 that set up in pairs, third live-rollers 7 and fourth live-rollers 8 are located and are close to export 2 one side, stay cord 4 passes third live-rollers 7 with the clearance that fourth live-rollers 8 formed.
The utility model provides a line structure is received to chest expander, adjacent export 2, in pairs sets up third live-rollers 7 and fourth live-rollers 8, in the chest expander use, when stay cord 4 is about to produce with export 2 and interferes, then can produce rolling friction with third live-rollers 7 or fourth live-rollers 8, effectively avoid stay cord 4 direct and export 2 outside sliding friction, effectively alleviate stay cord 4's friction impaired, prolonged stay cord 4's life.
The utility model discloses a concrete embodiment of third live- rollers 7 and 8 assembly relations of fourth live-rollers:
the third rotating roller 7 and the fourth rotating roller 8 approach each other, and the cord 4 is always held in a clamped state. Use third live-rollers 7 and fourth live-rollers 8 to grasp stay cord 4 for reel 3 and stay cord 4 between the line subassembly are at the chest expander use in-process, remain the tensioning state throughout, so, at reel 3 reciprocating rotation in-process, stay cord 4 can be orderly twined on reel 3.
When the exerciser loosens the pull rope 4, the rope can be orderly wound on the winding wheel 3, and random and irregular winding of the pull rope 4 is effectively avoided; further, when the exerciser pulls out stay cord 4 once more, because stay cord 4 evenly twines in order on reel 3, stay cord 4 can not slide on reel 3 for the chest expander can smooth output pulling force, and then effectively ensures that exerciser's use is felt and is tempered the effect.
The utility model discloses add a concrete embodiment of outside live-rollers 10:
the wire take-up assembly further comprises outer rotating rollers 10 which are arranged at two ends of the pull rope 4 in pairs, the outer rotating rollers 10 are arranged on one side, close to the outlet 2, of the third rotating roller 7, and a rotating shaft of each outer rotating roller 10 is perpendicular to a rotating shaft of the third rotating roller 7.
Set up outside live-rollers 10 in the direction perpendicular to stay cord 4, avoided the direct sliding friction in 4 edges of stay cord and export 2 outsides to convert the sliding friction that 4 edges of stay cord received into the rolling friction between stay cord 4 and outside live-rollers 10, greatly reduced the friction harm that 4 edges of stay cord received, improved the life of stay cord 4.
The utility model discloses add first kind of concrete embodiment of first live-rollers 5 and second live-rollers 6:
the wire take-up assembly comprises a first rotating roller 5 and a second rotating roller 6 which are arranged in pairs, the first rotating roller 5 and the second rotating roller 6 are arranged close to one side of the reel 3, and the pull rope 4 penetrates through a gap formed by the first rotating roller 5 and the second rotating roller 6.
The first rotating roller 5 and the second rotating roller 6 are arranged on one side, close to the reel 3, of the outlet 2 in pairs, when the winding thickness of the pull rope 4 on the reel 3 is changed in a reciprocating mode, the pull rope 4 always keeps rolling friction with the first rotating roller 5 or the second rotating roller 6 instead of directly sliding friction with the inner side of the outlet 2, the friction damage of the pull rope 4 is effectively reduced, and the service life of the pull rope 4 is prolonged.
First live-rollers 5 with second live-rollers 6 respectively with can rotate the mode set up in the casing 1, third live-rollers 7 with first live-rollers 5 is connected and can be relative first live-rollers 5 swings under the elastic component spring action, fourth live-rollers 8 with second live-rollers 6 is connected and can be relative second live-rollers 6 swings under the elastic component spring action.
The utility model discloses add the second kind concrete embodiment of first live-rollers 5 and second live-rollers 6:
the wire take-up assembly comprises a first rotating roller 5 and a second rotating roller 6 which are arranged in pair, the first rotating roller 5 and the second rotating roller 6 are arranged on one side close to the reel 3, and the pull rope 4 penetrates through a gap formed by the first rotating roller 5 and the second rotating roller 6;
the first rotating roller 5 and the second rotating roller 6 approach each other under the elastic force of an elastic member, so that the pull rope 4 is always kept in a clamped state; use first live-rollers 5 and second live-rollers 6 to grasp stay cord 4 for reel 3 and stay cord 4 between the line subassembly are at the chest expander use in-process, remain the tensioning state throughout, so, at reel 3 reciprocating rotation in-process, stay cord 4 can be orderly twined on reel 3.
Third live-rollers 7 with fourth live-rollers 8 respectively with can set up in the mode of rotating in the casing 1, first live-rollers 5 with third live-rollers 7 is connected and can be relative third live-rollers 7 swings under the effect of elastic component elasticity, second live-rollers 6 with fourth live-rollers 8 is connected and can be relative fourth live-rollers 8 swings under the effect of elastic component elasticity.
The utility model discloses add a concrete embodiment of inboard live-rollers 9:
the wire take-up assembly comprises inner side rotating rollers 9 which are arranged on two sides of the pull rope 4 in pairs, the inner side rotating rollers 9 are arranged between the first rotating roller 5 and the reel 3, and a rotating shaft of the inner side rotating rollers 9 is perpendicular to a rotating shaft of the first rotating roller 5; set up inboard live-rollers 9 in the direction perpendicular to stay cord 4, avoided the inboard direct sliding friction of stay cord 4 edge and export 2 to the sliding friction who receives 4 edges of stay cord converts into the rolling friction between stay cord 4 and inboard live-rollers 9 and the outside live-rollers 10, greatly reduced the friction harm that 4 edges of stay cord received, improved the life of stay cord 4.
The inner rotating roller 9 and the outer rotating roller 10 are formed by coaxially splicing bearings.
Adopt the bearing concatenation to constitute the live-rollers, prevent effectively in the chest expander use that dust foreign matter etc. from getting into the inside of inboard live-rollers 9 and outside live-rollers 10, avoid inboard live-rollers 9 and outside live-rollers 10 to rotate inefficacy.
The utility model relates to a preferred embodiment:
the first rotating roller 5 and the second rotating roller 6 are rotatably provided in the housing 1, and their respective rotating shafts are fixed in the housing 1.
The first rotating roller 5 is connected with a third rotating roller 7 in a swinging mode through an elastic piece I11;
the second rotating roller 6 is connected with a fourth rotating roller 8 in a swinging mode through a second elastic piece;
the third rotating roller 7 and the fourth rotating roller 8 are mutually matched under the action of an elastic member to clamp the pull rope 4, so that the pull rope 4 is kept in a tensioning state.
Use third live-rollers 7 and fourth live-rollers 8 to grasp stay cord 4 for reel 3 and stay cord 4 between the line subassembly are at the chest expander use in-process, remain the tensioning state throughout, so, at reel 3 reciprocating rotation in-process, stay cord 4 can be orderly twined on reel 3.
An outer rotating roller 10 for restricting the movement of the rope 4 toward the end thereof is mounted adjacent to the third rotating roller 7;
the rotating shaft of the outer rotating roller 10 is perpendicular to the rotating shaft of the third rotating roller 7, so that the outer rotating roller 10 can limit the sliding of the pull rope 4.
Set up outside live-rollers 10 in the direction perpendicular to stay cord 4, avoided the direct sliding friction in 4 edges of stay cord and export 2 outsides to convert the sliding friction that 4 edges of stay cord received into the rolling friction between stay cord 4 and outside live-rollers 10, greatly reduced the friction harm that 4 edges of stay cord received, improved the life of stay cord 4.
The first elastic part 11 is a spring, a tension spring or a torsion spring and is assembled on the first connecting part 12, the first connecting part 12 is of a sheet structure, one end of the first connecting part is rotatably connected with the first rotating roller 5, and the other end of the first connecting part is connected with the third rotating roller 7;
the second elastic part is a spring or a tension spring or a torsion spring and is assembled on the second connecting part, the second connecting part is of a sheet structure, one end of the second connecting part is rotatably connected with the second rotating roller 6, and the other end of the second connecting part is connected with the fourth rotating roller 8.
The utility model discloses another preferred embodiment:
a line-taking-up structure of a chest expander,
comprises a shell 1 with a cavity, a pull rope 4 and a reel 3 which can wind the pull rope 4;
an outlet 2 is arranged on the shell 1;
the reel 3 is arranged in the cavity of the shell 1;
the pull rope 4 has one end wound around the reel 3 and the other end passing through the outlet 2 and extending out of the housing 1.
A wire take-up component capable of abutting against the pull rope 4 is assembled at the outlet 2;
the wire take-up assembly comprises a third rotating roller 7 and a fourth rotating roller 8 which can limit the moving position of the pull rope 4.
A third rotating roller 7 and a fourth rotating roller 8 are rotatably provided in the housing 1, respectively, and their respective rotating shafts are fixed in the housing 1.
The pull rope 4 penetrates through a limiting gap formed by the third rotating roller 7 and the fourth rotating roller 8 and is connected with the third rotating roller 7 and the fourth rotating roller 8 in a sliding mode.
The utility model provides a line structure is received to chest expander, adjacent export 2 departments, in pairs set up third live-rollers 7 and fourth live-rollers 8, in the chest expander use, when stay cord 4 is about to produce with export 2 and interferes, then can produce rolling friction with third live-rollers 7 or fourth live-rollers 8, effectively avoid stay cord 4 direct and export 2's wall to produce sliding friction, effectively alleviate stay cord 4's friction impaired, prolonged stay cord 4's life.
Further, when the winding thickness of the rope 4 on the reel 3 is changed in a reciprocating manner, the rope 4 always keeps rolling friction with the third rotating roller 7 or the fourth rotating roller 8 instead of directly sliding friction with the inner side of the outlet 2, so that the friction damage of the rope 4 is further reduced, and the service life of the rope 4 is prolonged.
The third rotating roller 7 is connected with a first rotating roller 5 in a swinging mode through an elastic piece I11;
the fourth rotating roller 8 is connected with a second rotating roller 6 in a swinging mode through a second elastic piece;
the first rotating roller 5 and the second rotating roller 6 are matched with each other under the action of an elastic member to clamp the pull rope 4, so that the pull rope 4 is kept in a tensioning state;
the stay cord 4 is clamped by the first rotating roller 5 and the second rotating roller 6, and the first rotating roller 5 and the second rotating roller 6 can change along with the change of the angle of the stay cord 4, so that the stay cord 4 between the reel 3 and the take-up assembly always keeps a tensioning state in the use process of the chest expander, and thus, the stay cord 4 can be orderly wound on the reel 3 in the reciprocating rotation process of the reel 3.
When the exerciser loosens the pull rope 4, the rope can be orderly wound on the winding wheel 3, and random and irregular winding of the pull rope 4 is effectively avoided; further, when the exerciser pulls out stay cord 4 once more, because stay cord 4 evenly twines in order on reel 3, stay cord 4 can not slide on reel 3 for the chest expander can smooth output pulling force, and then effectively ensures that exerciser's use is felt and is tempered the effect.
An outer rotating roller 10 for restricting the movement of the rope 4 toward the end thereof is mounted adjacent to the third rotating roller 7;
the rotating shaft of the outer rotating roller 10 is perpendicular to the rotating shaft of the third rotating roller 7, so that the outer rotating roller 10 can limit the sliding of the pull rope 4;
set up outside live-rollers 10 in the direction perpendicular to stay cord 4, avoided the direct sliding friction in 4 edges of stay cord and export 2 outsides to convert the sliding friction that 4 edges of stay cord received into the rolling friction between stay cord 4 and outside live-rollers 10, greatly reduced the friction harm that 4 edges of stay cord received, improved the life of stay cord 4.
The first elastic part 11 is a spring, a tension spring or a torsion spring and is assembled on the first connecting part 12, the first connecting part 12 is of a sheet structure, one end of the first connecting part is rotatably connected with the first rotating roller 5, and the other end of the first connecting part is connected with the third rotating roller 7;
the second elastic part is a spring or a tension spring or a torsion spring and is assembled on the second connecting part, the second connecting part is of a sheet structure, one end of the second connecting part is rotatably connected with the second rotating roller 6, and the other end of the second connecting part is connected with the fourth rotating roller 8.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. The utility model provides a line structure is received to chest expander, includes casing (1), be equipped with export (2) on casing (1), be equipped with reel (3) and stay cord (4) in casing (1), stay cord (4) one end twine in on reel (3), the other end passes export (2) and extend to outside casing (1), its characterized in that, export (2) department is equipped with receives the line subassembly, it includes third live-rollers (7) and fourth live-rollers (8) that set up in pairs to receive the line subassembly, third live-rollers (7) and fourth live-rollers (8) are located and are close to export (2) one side, stay cord (4) are passed third live-rollers (7) with the clearance that fourth live-rollers (8) formed.
2. A wire take-up structure of a tension device as claimed in claim 1, wherein said third rotatable roller (7) and said fourth rotatable roller (8) are close to each other so that said pulling wire (4) is always kept in a clamped state.
3. A wire take-up structure of a tension device as claimed in claim 2, wherein said wire take-up assembly further comprises outer rotating rollers (10) disposed in pairs on both sides of said pulling rope (4), said outer rotating rollers (10) being disposed on a side of said third rotating roller (7) adjacent to said outlet (2), a rotation axis of said outer rotating rollers (10) being perpendicular to a rotation axis of said third rotating roller (7).
4. A wire take-up structure of a tension device as claimed in claim 3, wherein said wire take-up assembly comprises a first rotating roller (5) and a second rotating roller (6) arranged in pairs, said first rotating roller (5) and said second rotating roller (6) being disposed near a side of said reel (3), said pull cord (4) passing through a gap formed by said first rotating roller (5) and said second rotating roller (6).
5. A wire take-up structure of a tension device as recited in claim 4, wherein said first rotating roller (5) and said second rotating roller (6) are rotatably provided in said casing (1), respectively, said first rotating roller (5) is connected to a third rotating roller (7) and can swing with respect to said third rotating roller (7) by an elastic member elastic force, and said second rotating roller (6) is connected to said fourth rotating roller (8) and can swing with respect to said fourth rotating roller (8) by an elastic member elastic force.
6. A wire take-up structure of a tension device as claimed in claim 5,
the first rotating roller (5) and the second rotating roller (6) swing and approach each other under the elastic force of the elastic piece, so that the pull rope (4) is always kept in a clamped state.
7. A line-taking-up structure of a chest expander,
comprises a shell (1) with a cavity, a pull rope (4) and a winding wheel (3) which can wind the pull rope (4);
an outlet (2) is arranged on the shell (1);
the reel (3) is arranged in the cavity of the shell (1);
one end of the pull rope (4) is wound on the reel (3), and the other end of the pull rope penetrates through the outlet (2) and extends out of the shell (1);
it is characterized in that the preparation method is characterized in that,
a wire take-up component capable of abutting against the pull rope (4) is assembled at the outlet (2);
the wire take-up assembly comprises a third rotating roller (7) and a fourth rotating roller (8) which can limit the moving position of the pull rope (4);
a third rotating roller (7) and a fourth rotating roller (8) are respectively arranged at the edge of the shell (1) in a rotatable manner;
the pull rope (4) penetrates through a limiting gap formed by the third rotating roller (7) and the fourth rotating roller (8) and is in rolling sliding abutting joint with the third rotating roller (7) and the fourth rotating roller (8).
8. A wire take-up structure of a tension device as claimed in claim 7,
the third rotating roller (7) is connected with a first rotating roller (5) in a swinging mode through an elastic piece I (11);
the fourth rotating roller (8) is connected with a second rotating roller (6) in a swinging mode through a second elastic piece;
the first rotating roller (5) and the second rotating roller (6) are matched with each other under the action of an elastic piece to clamp the pull rope (4) so that the pull rope (4) is kept in a tensioning state;
an outer rotating roller (10) which is used for limiting the movement of the pull rope (4) towards the end part direction is assembled adjacent to the third rotating roller (7);
and the rotating shaft of the outer rotating roller (10) is vertical to the rotating shaft of the third rotating roller (7), so that the outer rotating roller (10) can limit the sliding of the pull rope (4).
9. A wire take-up structure of a tension device as claimed in claim 8, wherein said first elastic member (11) is a spring or a tension spring or a torsion spring, which is assembled to said first connecting member (12), said first connecting member (12) is a plate-like structure, one end of which is rotatably connected to said first rotating roller (5) and the other end of which is connected to said third rotating roller (7);
the second elastic part is a spring or a tension spring or a torsion spring and is assembled on the second connecting part, the second connecting part is of a sheet structure, one end of the second connecting part is rotatably connected with the second rotating roller (6), and the other end of the second connecting part is connected with the fourth rotating roller (8).
10. A chest expander comprising a wire take-up structure of the chest expander as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121644165.4U CN215275587U (en) | 2021-07-19 | 2021-07-19 | Line structure is received to chest expander and uses its chest expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121644165.4U CN215275587U (en) | 2021-07-19 | 2021-07-19 | Line structure is received to chest expander and uses its chest expander |
Publications (1)
| Publication Number | Publication Date |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023000694A1 (en) * | 2021-07-19 | 2023-01-26 | 杭州宇树科技有限公司 | Chest expander rope retracting structure and chest expander applying same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000694A1 (en) * | 2021-07-19 | 2023-01-26 | 杭州宇树科技有限公司 | Chest expander rope retracting structure and chest expander applying same |
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