TWI735872B - Resistance device - Google Patents

Abstract

A resistance device includes a resistance unit, a force applying unit and an adjustment unit. The resistance unit has a housing, and the elastic body is accommodated in the housing and one end is fixed to the housing. The force applying unit has a pivot through the casing and fixed to the other end of the elastic body away from the casing. The adjustment unit has movable parts that can selectively fix the surface of the shell to prevent the resistance unit from rotating. This arrangement allows multiple resistance units to be arranged side by side in the same resistance device, reducing the size of the resistance device.

Description

Resistance device

The present invention relates to a resistance device applied to a drawstring, more precisely, it relates to a resistance device that can freely adjust the resistance load.

Commercially available fitness pulleys can provide heavy weight and stable resistance, and can train many different muscle groups. It has always been a device that bodybuilders love to use. However, the traditional fitness pulley is bulky and heavy, and the weight is mainly adjusted by replacing the weight, so it can only be used in a fixed place, which is inconvenient for the user. Compared with the pulley machine, the bungee cord is small in size and light in weight, and has the advantages of being easy to carry. However, the bungee cord cannot provide stable resistance, nor can it achieve the training methods and effects required by the average bodybuilder.

There is also a resistance device on the market that uses elastic materials and drawstrings to provide load. It also has the advantage of small size. However, this kind of device can only set two side-by-side elastic materials on the same force axis at most, and the resistance can be adjusted. There are still limits.

Based on the above-mentioned shortcomings, the present invention provides a resistance device capable of outputting stable resistance.

According to the objective of the present invention, a resistance device is provided, which includes a resistance unit, a force applying unit, and an adjustment unit. The resistance unit has a housing, and the elastic body is accommodated in the housing and one end is fixed to the housing. The force applying unit has a pivot shaft passing through the housing, and the other end of the elastic body away from the housing is fixed on the pivot shaft. The adjustment unit has a movable part that can selectively fix the housing and control the resistance of the sexual body to the pivot.

When the adjustment unit is fixed to the housing, one end of the elastic body is relatively fixed, so that the elastic resistance can be applied to the pivot to generate resistance output, and the load is generated when the user pulls the cord of the force applying unit. In addition, the present invention uses By fixing the outer side of the elastic body (vortex spring) (the end far away from the pivot), the adjustment unit can be arranged around the housing of the resistance unit, which is beneficial to reduce the volume of the resistance device, so that multiple resistance units are housed side by side in one resistance device In, provide more resistance adjustment range.

Furthermore, the adjustment unit may have a movable part, and the locking structure can be evenly or partially distributed on the outer contour of the casing relative to the locking structure that is locked on the surface of the casing. Alternatively, the adjustment unit may have a clamping member to clamp and fix the surface of the housing, so that the resistance unit does not rotate, and a similar effect is achieved.

10: Shell

11: Cone pulley

12: pivot

13: Connector

15: force unit

20: Resistance unit

21: Shell

22: whirlpool spring

23: inner wall

24: exterior wall

30: Latch base

31, 42: latch

331, 332: blocking parts

35: adjustment unit

40: Clamping parts

41: bump

431, 432, 521, 522: free end

44: fixed end

50: handle

51: rope body

Figure 1 is a cross-sectional view of an embodiment of the resistance device.

Figure 2 is a side view of the resistance device of Figure 1;

Fig. 3 is a schematic diagram of setting resistance using the resistance device of Fig. 1.

Figure 4 is an exploded view of another embodiment of the resistance device.

Fig. 5 is a schematic diagram of setting resistance using the resistance device of Fig. 4.

Fig. 6 is a schematic diagram of setting resistance using a resistance device of another embodiment.

In order to clearly illustrate the specific implementation, structure, and effects of the present invention, the accompanying illustrations are described as follows: Please refer to Figures 1 to 3, which shows a resistance device having a housing 10 in which a resistance unit 20 and an application are provided. The force unit 15 and the adjustment unit 35. The force applying unit 15 has a pivot 12, and a tapered pulley 11 is provided on the pivot 12 to set a pull rope (not shown). The pull rope passes through the joint 13 of the housing 10 and extends to the outside of the resistance device. When pulling the rope, the distance between the rope on the tapered pulley 11 and the center axis of the tapered pulley 11 will increase with the length of the draw rope, which converts the torque generated by the resistance device into a fixed resistance output . The resistance unit 20 has a housing 21 through which the pivot 12 of the force applying unit passes through the housing 21. The inner wall 23 of the housing 21 defines a space for accommodating the elastic body. In this embodiment, the elastic body is a vortex spring 22. The outer end of 22 is fixed to the inner wall 23 of the housing 21, and the other end away from the outer is fixed to the pivot 12.

In this embodiment, the adjustment unit 35 has a pin 31 as a movable part, the pin 31 is positioned on the pin base 30 provided on the housing 10, and the outer wall 24 of the housing 21 of the resistance unit 20 is provided with a plurality of cylindrical locking members 331, 332, etc. The angles are arranged on the outline of the housing 21, and adjacent locking members form a locking structure. When the plug 31 moves along the plug base 30 and is locked to the locking members 331 and 332, the rotation of the resistance unit 20 can be prevented, and the vortex spring 22 can output resistance to the pivot shaft 12. In addition, the locking structure can also be a groove provided on the outer wall 24 so that the plug 31 structure is locked on the surface of the housing 21, and the locking structure can also be provided only on the circumference of the outer wall 24 of the housing 21. In addition, the movable part and the locking structure can also be a combination of a pin wheel and a pin wheel, so as to fine-tune the torsion force provided by the vortex spring 22.

It is worth mentioning that when the resistance of the vortex spring 22 is provided, the outer end of the vortex spring 22 (the end close to the housing 21) is fixed instead of the inner end (the end close to the pivot 12), so that the adjustment The unit 35 can be arranged around the housing of the resistance unit 20 so that a plurality of resistance units 20 are arranged side by side. Being contained in a resistance device is conducive to reducing the volume of the resistance device. In addition, when the adjustment unit is not fixed to the resistance unit 20, when the user applies force to the pivot 12 through the drawstring, the housing 21 of the resistance unit 20 and the vortex spring 22 will rotate together (as shown in the upper part of Fig. 3). When the adjustment unit 35 fixes the resistance unit 20, the rotation of the resistance unit 20 is stopped, so that the vortex spring 22 outputs the torsion force on the pivot 12 (the lower part of FIG. 3).

4 and 5, another implementation aspect of the resistance unit 20 and the adjustment unit in the resistance device is shown. The difference from the above aspect is that the adjustment unit 35 is designed to clamp and fix the surface of the housing 21, and the adjustment unit 35 The clamping member 40 is composed of two arc-shaped arms. One end of the two arc-shaped arms is fixed to the fixed end 44, and the other end is a free end 431, 432 provided with a perforation. Axis 12, produces an average force. As shown in FIG. 4, the adjusting unit 35 controls the arc-shaped arm to be clamped on the surface of the housing 21 of the resistance unit 20 by penetrating through the holes of the two free ends 431 and 432 by the latch 42 positioned on the housing 10. In addition, in order to achieve tight clamping, the inner arc surface of the arc-shaped arm adjacent to the housing 21 is also provided with protrusions 41 to generate appropriate resistance, and the surface of the housing 21 can also be provided with a locking structure corresponding to the positions of the protrusions 41 , The state of stable clamping. However, the two free ends of the clamping member 40 may have one end fixed when the resistance unit 20 rotates, and only the other end is positioned by the latch 42 to clamp the resistance unit 20 to prevent the resistance unit 20 from rotating.

Please refer to FIG. 6, the same as the previous embodiment, the surface of the housing 21 of the resistance unit 20 is clamped and fixed. The difference lies in the way of controlling the opening and closing of the free ends 521 and 522. In this embodiment, the rope body 51 is used. (Or belt-shaped body) as an element of the adjustment unit, the rope body 51 surrounds the two free ends 521 and 522 and then extends outwards and is arranged on the handle 50 of the housing 10. The rotation displacement of the handle 50 can tighten the rope body 51 and change the two free ends. The widths of 521 and 522 enable the arc-shaped arms to open or clamp the resistance unit 20.

In the above embodiment, in order to reduce the space configuration, counterweight, or facilitate the rotation of the resistance unit 20, the housing 21 of the resistance unit 20 is made cylindrical. However, without affecting the above purpose, the housing 21 of the resistance unit 20 may also be a geometric figure with a boundary, such as a square column, so as to reduce the rotational torque when the arc-shaped arm clamps the housing 21. In addition, the location of the tapered pulley 11 is not limited to the foregoing embodiment, and the tapered pulley 11 can also be modified to be located in the middle section of the pivot 12 to perform its functions.

In the above embodiment, a plurality of resistance units 20 with the same output resistance are arranged side by side in a housing 10, and the surface of the resistance unit 20 is selectively fixed through the adjustment unit 35 to control the output resistance. In other embodiments, the output resistance provided by the resistance units 20 may be different from each other, and the adjustment unit 35 controls the output combination to generate multiple resistances, which provides the user with more weight-bearing options.

10: Shell

11: Cone-shaped pulley

13: Connector

20: Resistance unit

21: Shell

24: exterior wall

Claims (11)

A resistance device includes: a resistance unit having a housing, an elastic body is accommodated in the housing, and one end of the elastic body is fixed to the housing; a force applying unit having a pivot passing through the housing A housing, the other end of the elastic body far away from the housing is fixed to the pivot; and an adjustment unit having a movable part to selectively fix the housing, and control the elastic body to exert resistance or not to exert resistance to the pivot . As for the resistance device described in item 1 of the scope of patent application, the movable part is a pin which can be clamped on the surface of the housing. The resistance device described in item 2 of the scope of patent application, wherein the outline of the casing is circular, and at least one locking structure is provided with the movable part combination. In the resistance device described in item 3 of the scope of patent application, the number of the at least one locking structure is plural and is arranged at an equal angle on the outline of the housing. According to the resistance device described in item 1 of the scope of patent application, the adjustment unit has a clamping member to clamp and fix the surface of the housing. According to the resistance device described in item 5 of the scope of patent application, the clamping member is provided with at least one protrusion protruding toward the housing. The resistance device described in item 5 of the scope of patent application, wherein the movable part is a pin that selectively fixes at least one of the two free ends of the clamping part. The resistance device described in item 5 of the scope of patent application, wherein the adjustment unit has a belt-shaped body for selectively displacing the two free ends of the clamping member, and the movable member is a handle to apply force to the belt-shaped body. The resistance device according to any one of items 1 to 8 in the scope of patent application, wherein the pivot of the force applying unit is far away from the other end of the resistance unit or the middle section of the pivot is provided with a tapered pulley. In the resistance device described in any one of items 1 to 8 in the scope of the patent application, the pivot of the force applying unit is driven to rotate by a pull rope. The resistance device described in any one of items 1 to 8 in the scope of the patent application, wherein the elastic body is a vortex spring.

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