CN108939502B

CN108939502B - Pulley assembly

Info

Publication number: CN108939502B
Application number: CN201710368239.8A
Authority: CN
Inventors: 邓光中
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-05-23
Filing date: 2017-05-23
Publication date: 2021-03-09
Anticipated expiration: 2037-05-23
Also published as: CN108939502A

Abstract

The present invention relates to a pulley assembly, and more particularly, to a pulley assembly for use in a sports apparatus. The pulley component can be arranged on a frame of sports equipment and is provided with a pulley module and a buffer module. The buffer module is connected with the sports equipment by a question mark hook, a U-shaped ring forms a movable joint structure through the annular part of the question mark hook, the other end of the U-shaped ring is connected with the pulley module, and the pulley module and the frame of the sports equipment are pushed by a spring sleeved on the outer sides of the question mark hook and the U-shaped ring. The pulley assembly can effectively obstruct the transmission of vibration between the pulley module and the sports equipment and can reduce the noise generated by the collision of parts.

Description

Pulley assembly

Technical Field

The present invention relates to a pulley assembly, and more particularly, to a pulley assembly for use in a sports apparatus.

Background

With the improvement of the quality of life of the people, people pay more and more attention to health preservation and body health, so that exercise and fitness become a wind tide gradually in recent years.

The outdoor sports are naturally beneficial to physical and mental health, but are limited by weather factors, such as strong wind and strong rain, which are unfavorable for outdoor sports. In addition, in recent years, the air pollution is more serious, and the haze cage and the PM2.5 particle content in the air exceed the standard are smelled. When outdoor activities are carried out under the condition of air pollution, the physical and mental states are not improved, but the outdoor activities are firstly damaged by the air pollution.

In order to reduce the limitation of exercise, various types of gymnasiums and health clubs are established in recent years as in spring shoots, and various types of exercise equipment are developed, so that a user can select an appropriate exercise equipment to perform a targeted exercise according to personal needs or goals.

The sports equipment is often provided with one or more pulley blocks, and the rope can be matched with the pulley blocks through different pulley blocks or the arrangement positions of the pulley blocks are changed so as to carry out different training actions.

However, the fixed pulley block directly fixes the pulley seat on the frame of the sports equipment, and the pulley block is rigidly connected with the sports equipment, so the vibration on the sports equipment and the vibration generated by the pulley block will be mutually transmitted to generate interference, which will affect the training action, and will generate resonance to damage the sports equipment.

The movable pulley block is temporarily hung on the frame of the sports equipment, the movable pulley block is not tightly combined with the sports equipment, the collision among parts is easy to generate during use, the friction loss of the parts is easy to generate due to the collision, and the emotion of a user is influenced by noise generated by the collision. When the vibration is too large, the movable pulley block may fall off and harm the user.

Therefore, there is a need in the art for an improved pulley assembly that can be firmly coupled to a sports apparatus, that can block vibration, and that can reduce noise during use.

Disclosure of Invention

An object of the present invention is to provide a pulley assembly, and more particularly, to a pulley assembly suitable for use in sports equipment, which can block vibration and reduce noise.

Another objective of the present invention is to provide a pulley assembly having a damping module for damping vibration between the pulley module and the exercise device.

It is still another object of the present invention to provide a pulley assembly, wherein the U-shaped ring of the damping module has a damping layer to protect the joint structure of the pulley assembly and prevent noise.

Another objective of the present invention is to provide a pulley assembly, wherein a spring is sleeved outside a joint structure of a buffer module for providing a bias to two sides, so that the joint structure can maintain a predetermined straight state.

To achieve the above object, the present invention provides a pulley assembly for a sports apparatus, which can be disposed on a frame of the sports apparatus, the pulley assembly comprising: the pulley module is provided with a pulley, and a rope can pass through the pulley module and slide by the pulley; one end of the buffer module is connected with the pulley module, and the other end of the buffer module is connected with the frame of the sports equipment; wherein, this buffer module contains: a question mark hook, which is provided with an annular part and a handle part, wherein the handle part is connected with the frame of the sports equipment; the U-shaped ring is provided with a closed end and an open end, the closed end passes through the annular part of the question mark hook, and the closed end is connected with the pulley module; and a spring, which is sleeved on the outside of the question mark hook and the U-shaped ring, and two ends of the spring respectively push against the pulley module and the frame of the sports equipment.

In an embodiment of the present invention, the U-shaped ring has a body, and a buffer layer is wrapped outside the body.

In an embodiment of the present invention, the buffer layer is a rubber layer.

In an embodiment of the present invention, the pulley module includes: a pulley seat having a base and two feet, wherein the base is connected with the buffer module; and the pulley is pivoted between the two foot parts.

In one embodiment of the present invention, the present invention further comprises a central shaft having a head portion and a shaft portion; wherein the base of the pulley seat is provided with a central hole, and the shaft part of the central shaft is connected with the open end of the U-shaped ring through the central hole of the pulley seat.

In an embodiment of the present invention, the present invention further comprises a fixing bolt; wherein the shaft part of the central shaft is provided with a through hole, and two ends of the open end of the U-shaped ring are respectively provided with a fixing hole; wherein the fixing bolt is connected with the shaft part of the central shaft and the open end of the U-shaped ring through the fixing hole and the through hole.

In an embodiment of the invention, the pulley module further includes a pair of wheel covers disposed inside the pulley seat to cover both sides of the pulley.

In an embodiment of the invention, the pulley module further includes a rotating shaft disposed at the axial center of the pulley, and the rotating shaft can be locked to the pulley seat by at least one screw.

In an embodiment of the invention, the buffer module further includes a first spring fixing piece and a second spring fixing piece for fixing two ends of the spring respectively, and the first spring fixing piece and the second spring fixing piece are used for pushing against the pulley module and the frame of the exercise apparatus respectively.

In an embodiment of the present invention, the first spring fixing piece and the second spring fixing piece are respectively provided with at least one fixing mechanism for fixing the spring.

In an embodiment of the invention, the first spring fixing piece and the second spring fixing piece are respectively provided with a central hole, the shaft portion of the central shaft is connected to the open end of the U-shaped ring through the central hole of the pulley seat and the central hole of the first spring fixing piece, and the handle portion of the question mark hook is connected to the frame of the sports apparatus through the central hole of the second spring fixing piece.

In one embodiment of the present invention, the diameters of the two ends of the spring are larger than the diameter of the center.

In an embodiment of the invention, the buffer module further includes a buffer pad disposed between the first spring fixing piece and the pulley module.

In an embodiment of the invention, the cushion pad can be selected from a nylon pad, a rubber pad, a silica gel pad, and a combination thereof.

In an embodiment of the present invention, the exercise device further includes an adjusting tube, one end of the adjusting tube is used to connect the buffer module, and the other end of the adjusting tube is provided with a plurality of adjusting holes, which can be inserted into a combining portion of the frame of the exercise device to adjust the position of the pulley assembly.

The pulley assembly of the invention can achieve the effect of effectively blocking the vibration transmission between the pulley module and the sports equipment and can reduce the noise generated by the collision of parts.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention

Fig. 2 is a perspective view of one embodiment of the sheave assembly of the present invention.

Fig. 3 is an exploded perspective view of the embodiment shown in fig. 2.

Fig. 3A is an enlarged schematic view of the U-shaped ring.

Fig. 4A and 4B are a side view and a cross-sectional view of the embodiment shown in fig. 2, respectively.

Fig. 5A and 5B are schematic operation diagrams of the embodiment shown in fig. 2.

Description of reference numerals: 10 sports equipment; 12 a frame; 14 a joint part; 141 positioning bolts; 20 a sheave assembly; 22 a pulley module; 220 a central aperture; 221 a pulley seat; 223 pulley cover; 225 pulleys; 227 rotating shaft; 229 screws; 24 an adjustment tube; 241, a tube body; 243 adjusting holes; 26 a buffer module; 260 central aperture; 261 a buffer washer; 263 a first spring fixing piece; 264 fixing mechanism; 265 a second spring fixing plate; 266 a securing mechanism; 267 spring; 268 a central aperture; 28 a central axis; 281 a head part; 283 a shaft portion; 285 perforating; a 32U-shaped ring; 321 a body; 323 a buffer layer; 325 fixing hole; 327 a closed end; 329 open end; 36 question mark hooks; 361 a handle; 363 an annular portion; 38 securing the bolt; 52 a first direction; 54 a second direction; 56 a third direction; 58 in a fourth direction.

Detailed Description

Fig. 1 is a schematic view of an embodiment of the present invention. As shown, the sheave assembly 20 of the present invention may be provided on a piece of athletic equipment 10. Generally, the exercise apparatus 10 generally has a frame 12 for mounting various components of the exercise apparatus 10. The exercise apparatus 10 of the present invention can be provided with at least one joint 14 at a suitable position of the frame 12 for fixing the pulley assembly 20 of the present invention (for example, the pulley assembly 20 can be combined and fixed with the adjusting tube 24 of the pulley block 20, and the position of the pulley assembly can be adjusted by matching with the structure of the adjusting hole 243 and the positioning bolt 141). The sports apparatus of the present invention includes, but is not limited to, general sports apparatuses and Pilates (Pilates) instruments.

Referring to fig. 2 to 4A, fig. 4B, a perspective view, an exploded perspective view, a side view and a cross-sectional view of an embodiment of the pulley assembly of the present invention are respectively shown. As shown, the pulley assembly 20 of the present invention has a pulley module 22, a buffer module 26 and an adjusting tube 24 (see fig. 1 for the adjusting tube 24 and its related structure). The damping module 26 is disposed between the pulley module 22 and the adjustment tube 24 to damp vibrations between the pulley module 26 and the exercise apparatus 10. The adjusting tube 24 has a tube body 241, one end of the tube body 241 is connected to the buffer module 26, and the other end is fixed to the connecting portion 14 of the exercise device 10. In an embodiment of the present invention, the tube 241 may be provided with a plurality of adjusting holes 243, and when the tube 241 is combined with the combining portion 14 of the exercise device 10, the positioning pins 141 of the combining portion 14 can be selectively inserted into the appropriate adjusting holes 243 to adjust the position of the pulley assembly 20.

The cushion module 26 can also be directly disposed on the frame 12 of the exercise apparatus 10 to form the fixed pulley assembly 20, without the adjustment tube 24.

Referring to fig. 3, 3A, 4A and 4B, the pulley assembly 20 of the present invention is shown in detail. The pulley module 22 includes a pulley seat 221 and a pulley 225. The pulley seat 221 has a base portion and two leg portions, a rotating shaft 227 is disposed at the axial center of the pulley 225, and the rotating shaft 227 can be fixed to the leg portions of the pulley seat 221 by at least one screw 229. Thus, the pulley 225 can rotate around the rotation shaft 227. When a rope (not shown) passes between the pulley 225 and the pulley holder 221 to straddle the pulley 225, the pulley 225 can be used to change the direction and smoothly slide. In an embodiment of the present invention, a pulley cover 223 may be disposed between the two side legs of the pulley seat 221 and the pulley 225 respectively to cover the two sides of the pulley 225, so as to protect the pulley 225, and limit the movement space of the rope, thereby preventing the rope from departing from the range of the pulley 225 and causing actions other than setting.

The base of the pulley block 221 is provided with a central bore 220 through which a central shaft 28 passes. The central shaft 28 has a wider head portion 281 and a narrower shaft portion 283. The shaft 283 extends from the end of the pulley 225 through the central hole 220 of the pulley seat 221, such that the head 281 abuts against the base of the pulley seat 221 and the shaft 283 is connected to the cushion module 26.

The buffer module 26 includes a question mark hook 36, a U-shaped ring 32 and a spring 267. Wherein the handle 361 of the question mark hook 36 can be connected with the adjusting tube 24 or the frame 12 of the sports apparatus 10 (the sports apparatus 10 and the related structure thereof refer to fig. 1). The closed end 327 of the U-shaped ring 32 is configured to be movable in a joint by the ring-shaped portion 363 of the question mark 36, and the open end 329 of the U-shaped ring 32 is connected to the pulley module 22. In this embodiment, the open end 329 of the U-shaped ring 32 is connected to the shaft portion 283 of the central shaft 28, i.e., the pulley module 22 is connected through the central shaft 28. The spring 267 is sleeved outside the question mark hook 36 and the U-shaped ring 32, and two ends of the spring are respectively pushed against the pulley module 22 and the adjusting tube 24 or the frame 12 of the exercise device 10 to apply an outward bias, so that the joint structure formed by the question mark hook 36 and the U-shaped ring 32 can keep a preset straight shape.

Because the movable range of the joint structure formed by the question mark hook 36 and the U-shaped ring 32 is large, the function of a universal joint can be almost achieved by matching the central shaft 28, and therefore, the joint structure can be correspondingly deformed no matter which direction the stress is applied to. When the stress is relieved, the spring 267 can return to a straight state. Therefore, with the cushion module 26 of the present invention, the shock between the pulley module 22 and the sporting goods 10 can be effectively blocked.

The U-shaped ring 32 of the present invention has a body 321, and a buffer layer 323 covers the outside of the body 321, and two fixing holes 325 are respectively formed at two ends of the open end 329, and the U-shaped ring 32 and the central shaft 28 can be fastened by a fixing bolt 38 through the fixing holes 325 and the through hole 285 of the central shaft 28. The buffer layer 323 can be a rubber layer, which provides a further buffering effect. In the pulley assembly 20 of the present invention, only the question mark hook 36 collides with the U-shaped ring 32, and the buffer layer 323 is provided to eliminate noise generated by the collision.

The cushion module 26 of the present invention further includes a first spring fixing plate 263 and a second spring fixing plate 265, which are respectively disposed at two ends of the cushion module 26. The first spring fixing plate 263 and the second spring fixing plate 265 are respectively provided with at least one

fixing mechanism

264, 266 for fixing two ends of the spring 267. The first spring fixing plate 263 and the second spring fixing plate 265 are respectively provided with a

central hole

260, 268, through which the shaft portion 283 of the central shaft 28 and the handle portion 361 of the question mark hook 36 can pass.

In addition, a buffer washer 261 may be disposed between the first spring fixing plate 263 and the base of the pulley seat 221, and the buffer washer 261 has a central hole 260 for the shaft 283 of the central shaft 28 to pass through. The buffer washer 261 can be selected from one of a nylon washer, a rubber washer, a silicone washer and a combination thereof, and can provide a further buffer effect between the first spring fixing piece 263 and the pulley module 22 and further eliminate noise that may be generated. In an embodiment of the present invention, the spring 267 may be a trumpet spring, and the diameter of the two ends of the trumpet spring is larger than that of the middle of the trumpet spring, so that the possibility of collision between the spring 267 and other parts when being pressed is reduced, and the source of noise is reduced.

Please refer to fig. 5A and 5B, which are schematic operation diagrams according to an embodiment of the present invention. As shown, the cushion module 26 of the present invention is maintained in a straight condition by the outward bias provided by the springs 267. When the pulley module 22 is pressed and pushed in the first direction 52, the shank side of the hook 363 presses the outside of the U-shaped buffer layer 323, so that the buffer layer 323 is deformed to eliminate the collision stress and prevent the generation of noise.

When the pulley module 22 is pulled in the second direction by the pulling force, the outer side of the ring-shaped part 363 of the question mark hook presses the inner side of the U-shaped buffer layer 323, so that the buffer layer 323 is deformed to eliminate the stress of collision and prevent the generation of noise. Due to the joint structure formed by the question mark hook and the U-shaped ring, the pulley module 22 can still rotate up and down in the third direction 56, can rotate left and right in the fourth direction 58 by taking the fixing bolt as a rotating shaft, and can still rotate by taking the central shaft as an axis. When the external stress is removed, the bias of the spring 267 returns the cushion module 26 to the straight state.

The above description is only an example of the present invention, and is not intended to limit the scope of the present invention, that is, all equivalent variations and modifications of the shape, structure, characteristics, method and spirit described in the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A pulley assembly suitable for a sports apparatus and capable of being disposed on a frame of the sports apparatus, the pulley assembly comprising:

the pulley module is provided with a pulley, and a rope can pass through the pulley module and slide by the pulley; and

one end of the buffer module is connected with the pulley module, and the other end of the buffer module is connected with the frame of the sports equipment;

wherein, this buffer module contains:

a question mark hook, which is provided with an annular part and a handle part, wherein the handle part is connected with the frame of the sports equipment;

the U-shaped ring is provided with a closed end and an open end, the closed end passes through the annular part of the question mark hook, and the closed end is connected with the pulley module; and

a spring, which is sleeved on the outside of the question mark hook and the U-shaped ring, wherein two ends of the spring respectively push against the pulley module and the frame of the sports equipment, the U-shaped ring is provided with a body, and a buffer layer is coated outside the body;

wherein the exercise apparatus comprises a piratis apparatus.

2. The sheave assembly of claim 1, wherein: the buffer layer is a rubber layer.

3. The sheave assembly of claim 1, wherein: the pulley module includes:

a pulley seat having a base and two feet, wherein the base is connected with the buffer module; and

the pulley is pivoted between the two foot parts.

4. The sheave assembly of claim 3, wherein: also includes a central shaft having a head portion and a shaft portion; wherein the base of the pulley seat is provided with a central hole, and the shaft part of the central shaft is connected with the open end of the U-shaped ring through the central hole of the pulley seat.

5. The sheave assembly of claim 4, wherein: also comprises a fixed bolt; wherein the shaft part of the central shaft is provided with a through hole, and two ends of the open end of the U-shaped ring are respectively provided with a fixing hole; wherein the fixing bolt is connected with the shaft part of the central shaft and the open end of the U-shaped ring through the fixing hole and the through hole.

6. The sheave assembly of claim 3, wherein: the pulley module also comprises a pair of wheel covers which are arranged on the inner side of the pulley seat and cover two sides of the pulley.

7. The sheave assembly of claim 3, wherein: the pulley module further comprises a rotating shaft, the rotating shaft is arranged at the axis position of the pulley, and the rotating shaft is fixedly locked on the pulley seat through at least one screw.

8. The sheave assembly of claim 4, wherein: the buffer module further comprises a first spring fixing piece and a second spring fixing piece, wherein the first spring fixing piece and the second spring fixing piece are used for fixing two ends of the spring respectively, and the first spring fixing piece and the second spring fixing piece are used for pushing against the pulley module and the frame of the sports equipment respectively.

9. The sheave assembly of claim 8, wherein: the first spring fixing piece and the second spring fixing piece are respectively provided with at least one fixing mechanism for fixing the spring.

10. The sheave assembly of claim 8, wherein: the first spring fixing piece and the second spring fixing piece are respectively provided with a central hole, the shaft part of the central shaft is connected with the open end of the U-shaped ring through the central hole of the pulley seat and the central hole of the first spring fixing piece, and the handle part of the question mark hook is connected with the frame of the sports equipment through the central hole of the second spring fixing piece.

11. The sheave assembly of claim 8, wherein: the diameter of the two ends of the spring is larger than that of the center of the spring.

12. The sheave assembly of claim 8, wherein: the buffer module further comprises a buffer gasket, and the buffer gasket is arranged between the first spring fixing piece and the pulley module.

13. The sheave assembly of claim 12, wherein: the buffer gasket is one of a nylon gasket, a rubber gasket, a silica gel gasket and a combination thereof.

14. The sheave assembly of claim 1, wherein: the buffer module is used for buffering the movement of the pulley component, and the buffer module is used for buffering the movement of the pulley component.