CN217187726U - Spiral winding device of strength training machine and strength training machine - Google Patents
Spiral winding device of strength training machine and strength training machine Download PDFInfo
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- CN217187726U CN217187726U CN202122756289.8U CN202122756289U CN217187726U CN 217187726 U CN217187726 U CN 217187726U CN 202122756289 U CN202122756289 U CN 202122756289U CN 217187726 U CN217187726 U CN 217187726U
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Abstract
The utility model relates to the field of strength apparatus, and discloses a strength training machine spiral winding device and a strength training machine, wherein the strength training machine spiral winding device comprises a resistance source, a winding wheel, a flexible connecting piece and a screw rod; the resistance source comprises a resistance source body and an output shaft, and the resistance source body outputs torque through the output shaft; the reel, the screw and the output shaft are coaxially arranged; a threaded hole is formed in the reel, the reel is in threaded connection with the screw rod, and the reel is in transmission connection with the output shaft; the flexible connectors are wound on the reel in a winding and side-by-side manner. The utility model discloses a strength training machine spiral winding device can make the user overcome the required pulling force of fixed moment of torsion invariable to reach anticipated training effect, and simple structure, occupation space is little.
Description
Technical Field
The utility model relates to a strength apparatus field especially relates to a strength training machine spiral winding device and strength training machine.
Background
In order to miniaturize the strength training apparatus, a plurality of strength training apparatuses adopt a motor or a clockwork spring or a friction wheel as a resistance source to output torque. In the existing strength training apparatus, the strength training apparatus generally includes a motor, a reel and a pull rope, the reel is disposed on an output shaft of the motor, the pull rope is wound on the reel, and a user pulls the pull rope to overcome an output torque of the motor, so as to achieve a strength training effect. In the process of pulling the pull rope, the pull rope loosens from the reel one by one along with the loop, the radius of tension of the pull rope is reduced, the torque is increased, the torque output by the resistance source is fixed, the torque is increased, a user can overcome the output torque of the resistance source by using smaller tension to pull the pull rope, and the expected training effect cannot be achieved. In addition, the change of the pull radius of the pull rope can also change the outlet angle of the pull rope, thereby influencing the training effect. There is also a force training machine spiral winding device in the market, and its screw rod is fixed with the reel, and reel and screw rod move on the relative mount pad, and its installation space is great, and the structure is compact enough.
SUMMERY OF THE UTILITY MODEL
The utility model provides a strength training machine spiral winding device and strength training machine can make the user overcome the required pulling force of fixed moment of torsion invariable to reach anticipated training effect, and simple structure, occupation space is little.
In order to solve the technical problem, the utility model provides a spiral winding device of a strength training machine, which comprises a resistance source, a winding wheel, a flexible connecting piece and a screw rod;
the resistance source comprises a resistance source body and an output shaft, and the resistance source body outputs torque through the output shaft;
the reel, the screw and the output shaft are coaxially arranged;
a threaded hole is formed in the reel, the reel is in threaded connection with the screw, and the reel is in transmission connection with the output shaft;
the flexible connecting pieces are wound on the reels in parallel one by one;
when the flexible connecting piece pulls the reel to rotate and drives the output shaft to rotate, the reel moves relative to the screw rod along the axial direction of the screw rod, the separation point of the flexible connecting piece keeps the position relative to the screw rod unchanged, and the separation point is the position where the flexible connecting piece is separated from the reel.
Optionally, the output shaft is the integral key shaft, the reel, the screw rod with the integral key shaft is coaxial, the screw hole is located the reel is kept away from one side of integral key shaft, the reel is close to the one end of output shaft has seted up the spline groove, the spline groove with the integral key shaft is connected.
Optionally, a through hole is coaxially formed in the center of the reel, one end, far away from the spline shaft, of the through hole is threaded to form the threaded hole, and a spline groove is formed in one end, close to the spline shaft, of the through hole.
Optionally, a through hole is coaxially formed in the center of the reel, a spline groove is formed in the through hole, and a thread is formed in the spline groove to form the threaded hole;
or one end of the spline groove, which is far away from the spline shaft, is provided with threads to form the threaded hole.
Optionally, the reel is cylindrical;
one end of the flexible connecting piece is fixed on the reel, and the flexible connecting piece is wound on the reel circle by circle.
Optionally, the side surface of the reel is provided with grooves, and the grooves are spirally distributed along the side surface of the reel;
the flexible connecting piece is accommodated in the groove and wound on the reel along the groove circle by circle;
the screw pitch of the groove is equal to that of the screw rod, and the shape of the groove is matched with that of the flexible connecting piece.
Optionally, the hydraulic resistance source further comprises a mounting rack, and the screw and the resistance source body are arranged on the mounting rack;
the one end that the output shaft was kept away from to the reel is equipped with fender portion, the reel is towards keeping away from when the direction of output shaft removes, fender portion can be preferred with the mounting bracket contact.
Optionally, the initial position of the reel is located at an end of the screw remote from the output shaft.
The utility model also provides a strength training machine, which comprises a base, a supporting frame and the spiral winding device of the strength training machine; the base is fixedly connected with the support frame, and the spiral winding device of the strength training machine is fixed on the support frame.
Compared with the prior art, in the spiral winding device of the force training machine, a user applies pulling force to the flexible connecting piece, overcomes the braking torque of the resistance source body, pulls the reel to rotate and drives the output shaft to rotate, the reel moves along the axial direction of the screw rod, and the position of a separation point of the flexible connecting piece from the reel basically keeps unchanged relative to the screw rod, so that constant torque is kept, the pulling force required by the user is constant, and the expected training effect is achieved; similarly, when the force training machine spiral winding device is stopped, the resistance source outputs torque through the output shaft, the output shaft rotates to drive the winding wheel to rotate, the flexible connecting piece is wound on the winding wheel again, and meanwhile the winding wheel moves towards the opposite direction along the axial direction of the screw rod. Wherein, the resistance source body is a motor, and can also be a clockwork spring or a friction wheel and the like; the flexible connecting piece is a rope or the like, can be wound on the reel in a circle without lap winding, and therefore constant torque can be kept. Simultaneously, because the relative screw rod axial displacement of reel, the utility model discloses an among the strength training machine spiral winding device, only need reserve the installation space of reel stroke, saved the space of screw rod removal stroke, make overall structure more simple and convenient, compact, occupation space is little, can save the cost.
The utility model discloses a strength training machine also has above-mentioned advantage, no longer gives unnecessary details here.
Drawings
One or more embodiments are illustrated in drawings corresponding to, and not limiting to, the embodiments, in which elements having the same reference number designation may be represented as similar elements, unless specifically noted, the drawings in the figures are not to scale.
FIG. 1 is a cross-sectional view of a strength training machine spiral winding device according to an embodiment of the present application.
Fig. 2 is a sectional view of a reel according to a first embodiment of the present application.
Fig. 3 is a diagram showing relative positional relationships of a reel, a flexible joint, a screw, and a release point according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a spiral winding device of a strength training machine according to an embodiment of the present application.
FIG. 5 is an exploded view of the spiral winding device of the strength training machine in accordance with one embodiment of the present application.
FIG. 6 is an implementation of a strength training machine of an embodiment of the present application.
FIG. 7 is another embodiment of a strength training machine according to an embodiment of the present application.
Detailed Description
The embodiments of the present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the embodiments of the application and that no limitation on the scope of the embodiments is intended. It should be further noted that, for convenience of description, only some structures related to the embodiments of the present application are shown in the drawings, not all of the structures are shown.
Furthermore, the terms first, second, third and the like in the description and in the claims, are used for descriptive purposes only to distinguish one from another for purposes of description, and are not to be construed as indicating or implying relative importance or to imply that the indicated features are numbers, nor necessarily order or temporal order. The terms are interchangeable where appropriate. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Similarly, the terms "fixed" and "connected," as used in the description and claims, are not to be construed as limited to direct connection. Thus, the expression "device a is connected to device B" should not be limited to devices or systems in which device a is directly connected to device B, meaning that there is a path between device a and device B, which may be a path including other devices or tools.
Referring to fig. 1 to 3, an embodiment of the present invention provides a spiral winding device 100 for a strength training machine, which includes a resistance source 1, a reel 2, a flexible connecting member 3 and a screw rod 4; the resistance source 1 comprises a resistance source body 11 and an output shaft 12, wherein the resistance source body 11 outputs torque through the output shaft 12; the reel 2, the screw 4 and the output shaft 12 are coaxially arranged; a threaded hole 21 is formed in the reel 2, the reel 2 is in threaded connection with the screw rod 4, and the reel 2 is in transmission connection with the output shaft 12; the flexible connecting pieces 3 are wound on the reels 2 in parallel one by one; when the flexible connector 3 pulls the reel 2 to rotate and drives the output shaft 12 to rotate, the reel 2 moves along the axial direction of the screw rod 4, the separation point 31 of the flexible connector 3 keeps the position relative to the screw rod 4 unchanged, and the separation point 31 is the position where the flexible connector 3 is separated from the reel 2. Preferably, the threaded hole 21 and the reel 2 are coaxially arranged so that the reel 2 and the screw 4 can coaxially rotate relative to each other.
In the force trainer spiral winding device 100 of the present embodiment, the user applies a pulling force to the flexible link 3 to pull the reel 2 to rotate against the braking torque of the resistance source body 11 and rotate the output shaft 12, the reel 2 moves relative to the screw 4 in the first direction of the axial direction of the screw 4, the disengagement point 31 moves relative to the reel 2 in the axial direction of the screw 4 in the direction opposite to the direction of movement of the reel 2 and in the same distance as the movement of the reel 2, so that the position of the disengagement point 31 is kept constant relative to the screw 4. Under the condition that the torque output by the output shaft 12 is fixed, the flexible connecting piece 3 keeps constant torque, the pulling force required to be provided by a user is constant, and the expected training effect can be achieved; similarly, when the user stops applying the pulling force to the flexible connector 3, the resistance source body 11 outputs torque through the output shaft 12, the output shaft 12 rotates and drives the reel 2 to rotate, so that the flexible connector 3 is wound on the reel 2 again, and simultaneously the reel 2 moves relative to the screw 4 along the second axial direction of the screw 4, and the position of the separation point 31 relative to the screw 4 is kept unchanged, namely the separation point 31 of the flexible connector 3 does not move relative to the screw 4 along the axial direction of the screw 4. Wherein, the resistance source body 11 is a motor, and can also be a clockwork spring or a friction wheel and the like; the flexible connecting member 3 is a rope or the like, and the flexible connecting member 3 can be wound around the reel 2 side by side in a circle, so that a constant torque can be maintained. Of course, the strength training machine spiral winding device 100 of the present embodiment may be used for training when the torque output by the output shaft 12 is not constant. No matter the reel 2 or the screw 4, there is a certain load relative to the user, and such load is fixed and uncontrollable, further, the strength training machine spiral winding device 100 of the present embodiment only needs the reel 2 to move, and does not need to drive the screw 4 to move, reducing the uncontrollable load. Because the reel 2 moves axially relative to the screw rod 4, in the spiral winding device 100 of the strength training machine of the embodiment, only the installation space of the stroke of the reel 2 needs to be reserved, the space of the movement stroke of the screw rod 4 is saved, the whole structure is simpler, more convenient and more compact, the occupied space is small, and the cost can be saved. The first direction is a direction gradually away from the resistance source body 1, and the second direction is a direction gradually approaching the resistance source body 1. Or, the first direction is a direction gradually approaching to the resistance source body 1, and the second direction is a direction gradually departing from the resistance source body 1.
In one embodiment, the output shaft 12 is a spline shaft, the reel 2 and the screw 4 are coaxial with the spline shaft, the threaded hole 21 is located on one side of the reel 2 away from the spline shaft, a spline groove 22 is formed at one end of the reel 2 close to the output shaft 12, and the spline groove 22 is connected with the spline shaft. The spline grooves 22 are connected with the spline shaft, so that larger torque can be output. At the same time, the spline grooves 22 are relatively movable in the axial direction of the spline shaft, so that the reel 2 can smoothly move in the axial direction of the screw 4.
In one embodiment, the output shaft 12 is a spline shaft, the reel 2 and the screw rod 4 are coaxial with the spline shaft, a through hole (not marked in the figure) is coaxially arranged in the center of the reel 2, one end of the inner wall of the through hole, which is far away from the spline shaft, is threaded to form the threaded hole 21, one end of the inner wall of the through hole, which is close to the spline shaft, is provided with a spline groove 22, and the spline groove 22 is connected with the spline shaft. Offer spline groove 22 and screw thread in reel 2's through-hole simultaneously, make reel 2 both can both be connected with the integral key shaft, can connect with screw rod 4 through the screw thread again, retrencied the mechanism, practiced thrift the space, and spline groove 22 and screw hole 21 can not take place mutual interference. Wherein, only need to keep away from the one end of integral key shaft and set up a small segment screw thread, just can make reel 2 connect the removal on screw rod 4.
In another embodiment, the output shaft 12 is a spline shaft, the reel 2 and the screw rod 4 are coaxial with the spline shaft, the reel 2 is provided with a through hole coaxially in the center, the inner wall of the through hole is provided with spline grooves 22, and the protruding parts of the spline grooves 22 are threaded, so that the through hole can be in threaded connection with the screw rod 4 and can be in key connection with the spline shaft, thereby ensuring that the reel 2 can move along the axial direction of the screw rod 4 or the spline shaft. Preferably, can set up whole through-hole inner wall into spline groove 22 to keep away from the one end of integral key shaft at spline groove 22 and set up a segment screw thread, so can simplify manufacturing process, practice thrift the cost, simultaneously, only realize reel 2's axial displacement through the inside through-hole of reel 2, retrencied the mechanism, practiced thrift the space, and spline groove 22 and screw hole 21 can not take place mutual interference, and the simultaneous processing is more convenient.
In one embodiment, the reel 2 is cylindrical; one end of the flexible connecting piece 3 is fixed on the reel 2, and the flexible connecting piece 3 is wound on the reel 2. The flexible connector 3 can be wound around the cylindrical reel 2 in a circle and a circle side by side, and the reel 2 can be pulled by the user pulling the other end of the flexible connector 3 to do exercise.
In one embodiment, the side surface of the reel 2 is provided with grooves 23, and the grooves 23 are spirally distributed along the side surface of the reel; the flexible connector 3 is received in the groove 23 and wound on the reel 2 along the groove 23, one by one. The recesses 23 have a limiting effect on the flexible connectors 3, ensuring that the flexible connectors 3 can be wound around the reel 2 in sequence, one turn, without overlapping. In one embodiment, the side of the reel 2 is not provided with the grooves 23, and the flexible connectors 3 are wound side by side on the tread of the reel 2.
In one embodiment, the pitch of the groove 23 is equal to the pitch of the screw rod 4, and the shape of the groove 23 is adapted to the shape of the flexible connector 3. The flexible connector 3 is caused to rotate one turn on the reel 2, and the reel 2 is also caused to rotate one turn on the screw 4. Preferably, the cross section of the groove 23 is arc-shaped, which is adapted to the shape of the flexible connector 3, the groove 23 can smoothly accommodate the flexible connector 3, and when the flexible connector 3 is pulled, the flexible connector 3 can smoothly separate from the groove 23.
Referring to fig. 4 and 5, in an embodiment, the strength training machine spiral winding device 100 further includes a mounting bracket 6 and a limiting cover 7, and the screw rod 4 and the resistance source body 11 are both disposed on the mounting bracket 6; the mounting frame 6 is used for mounting the resistance source body 11 and the screw rod 4. The limiting cover 7 is arranged outside the reel 2 in a surrounding manner and fixed on the mounting frame 6; a notch 71 is formed in the limiting cover 7, and the flexible connecting piece 3 penetrates through the notch 71; the clearance between the limit cover 7 and the reel 2 is smaller than the thickness of the flexible connecting piece 3, and when the flexible connecting piece 3 is loosened or the resistance source body 11 drives the flexible connecting piece 3 to wind back on the reel 2, the flexible connecting piece 3 cannot be separated from the reel 2, so that winding disorder occurs.
In one embodiment, a stop portion 25 is arranged at one end of the reel 2 far away from the output shaft 12, and when the reel 2 moves in the direction far away from the output shaft 12, the stop portion 25 can be preferentially contacted with the mounting frame 6 and limited, so that the phenomenon that the threaded hole 21 and the screw rod 4 are clamped due to the fact that the threaded hole of the reel 2 moves to the limit position is avoided. Preferably, the stopper 25 is a protrusion formed by protruding one end of the reel 2 away from the output shaft 12, and specifically, the protrusion is close to the circumferential surface of the reel 2.
In one embodiment, the initial position of the reel 2 is at the end of the screw 4 away from the output shaft 12, and when the flexible connector 3 is pulled, the reel 2 moves in a direction approaching the output shaft 12. Of course, the initial position of the reel 2 can also be located at the end of the screw 4 close to the output shaft 12. When the reel 2 reaches the limit position from the initial position, most of the screw 4 may be inside the threaded hole 21 or the through hole.
Referring to fig. 6, the present embodiment further discloses a strength training machine, which includes a base C1, a supporting frame C2, and the spiral winding device 100 of the strength training machine; the base C1 is fixedly connected with the support frame C2, and the strength training machine spiral winding device 100 is fixed on the support frame C2. The base C1 provides the support force for the support C2, and when the user uses the strength training machine, the user stands on the support C2 and applies the pulling force to the flexible connecting piece 3 to obtain exercise. The user overcomes the brake torque of the resistance source body 11, pulls the reel 2 to rotate and drives the output shaft 12 to rotate, the reel 2 moves along the axial direction of the screw rod 4, the outlet position of the flexible connecting piece 3 relative to the mounting frame 6 is kept unchanged, therefore, the constant torque is kept, the pulling force required by the user is constant, and the expected training effect is achieved; similarly, when the force trainer spiral winding device 100 is stopped, the resistance source body 11 outputs torque through the output shaft 12, and the output shaft 12 rotates to drive the reel 2 to rotate, so that the flexible connector 3 is wound back to the groove 23 of the reel 2, and the reel 2 moves reversely along the axial direction of the screw rod 4.
Referring to fig. 7, in an embodiment, the number of the strength training machine spiral winding devices 100 is two, and the two strength training machine spiral winding devices 100 are symmetrically fixed at two ends of the supporting frame C2 respectively. The user can exert pulling force to two flexible connectors 3 simultaneously, makes to temper more high-efficient.
In one embodiment, the strength training machine may include only one spiral winding device 100, and the one spiral winding device 100 may be disposed at the middle of the strength training machine or at the end of the strength training machine.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A spiral winding device of a strength training machine is characterized by comprising a resistance source, a winding wheel, a flexible connecting piece and a screw rod;
the resistance source comprises a resistance source body and an output shaft, and the resistance source body outputs torque through the output shaft;
the reel, the screw and the output shaft are coaxially arranged;
a threaded hole is formed in the reel, the reel is in threaded connection with the screw rod, and the reel is in transmission connection with the output shaft;
the flexible connecting pieces are wound on the reels in a winding and side-by-side mode;
when the flexible connecting piece pulls the reel to rotate and drives the output shaft to rotate, the reel moves relative to the screw rod along the axial direction of the screw rod, the separation point of the flexible connecting piece keeps the position relative to the screw rod unchanged, and the separation point is the position where the flexible connecting piece is separated from the reel.
2. The strength training machine spiral winding device of claim 1, wherein the output shaft is a spline shaft, the reel and the screw are coaxial with the spline shaft, the threaded hole is located on a side of the reel away from the spline shaft, and a spline groove is formed at an end of the reel close to the output shaft and connected with the spline shaft.
3. The strength training machine spiral winding device according to claim 2, wherein a through hole is coaxially formed in the center of the reel, the through hole is threaded at an end away from the spline shaft to form the threaded hole, and a spline groove is formed at an end of the through hole close to the spline shaft.
4. The strength training machine spiral winding device according to claim 2, wherein a through hole is coaxially formed in the center of the reel, a spline groove is formed in the through hole, and the spline groove is threaded to form the threaded hole;
or one end of the spline groove, which is far away from the spline shaft, is provided with threads to form the threaded hole.
5. The strength training machine spiral winding device of claim 1, wherein the reel is cylindrical;
one end of the flexible connecting piece is fixed on the reel, and the flexible connecting piece is wound on the reel one by one.
6. The strength training machine spiral winding device according to claim 5, wherein the side of the reel is provided with grooves, and the grooves are spirally distributed along the side of the reel;
the flexible connecting piece is accommodated in the groove and wound on the reel along the groove circle by circle;
the screw pitch of the groove is equal to that of the screw rod, and the shape of the groove is matched with that of the flexible connecting piece.
7. The strength training machine spiral winding device of any one of claims 1 to 6, further comprising a mounting bracket, wherein the screw and the resistance source body are both provided on the mounting bracket;
the one end that the output shaft was kept away from to the reel is equipped with fender portion, the reel is towards keeping away from when the direction of output shaft removes, fender portion can be preferred with the mounting bracket contact.
8. The strength training machine spiral winding device according to any one of claims 1 to 6, wherein the initial position of the reel is located at an end of the screw rod away from the output shaft.
9. A strength training machine comprising a base, a support frame, and the strength training machine spiral winding device of any one of claims 1-8; the base is fixedly connected with the support frame, and the spiral winding device of the strength training machine is fixed on the support frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122756289.8U CN217187726U (en) | 2021-11-11 | 2021-11-11 | Spiral winding device of strength training machine and strength training machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122756289.8U CN217187726U (en) | 2021-11-11 | 2021-11-11 | Spiral winding device of strength training machine and strength training machine |
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| Publication Number | Publication Date |
|---|---|
| CN217187726U true CN217187726U (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122756289.8U Active CN217187726U (en) | 2021-11-11 | 2021-11-11 | Spiral winding device of strength training machine and strength training machine |
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| Country | Link |
|---|---|
| CN (1) | CN217187726U (en) |
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2021
- 2021-11-11 CN CN202122756289.8U patent/CN217187726U/en active Active
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