TW201909963A - Resistance control device capable of improving the accuracy and stability in resistance adjustment - Google Patents

Abstract

A resistance control device is adapted to control a resistance of a flywheel in rotation. The resistance control device comprises a support unit, a magnetic damping brake unit, and a control unit. The support unit includes a frame body, a first support shaft inserted in the frame body and sleeved with the flywheel, and a second support shaft and a third support shaft formed on the frame body. The magnetic damping brake unit is disposed adjacent to a circumference of the flywheel. The magnetic damping brake unit includes a magnetic component having one end pivotally connected to the second support shaft, and an adjustment component set disposed adjacent to the other end of the magnetic component. The control unit includes a set of cams disposed on the third support shaft. The cams are operable to push against the adjustment component so that the magnetic component moves away or approaches to the flywheel relative to the frame body, thereby improving the accuracy and stability in resistance adjustment.

Description

Resistance control device

The present invention relates to a training device, and more particularly to a resistance control device.

Referring to FIG. 1, a general resistance control device is adapted to control the resistance of rotation of a flywheel 100. The resistance control device includes a base set 1, a support set 2, and a magnetic damping brake 3.

The base set 1 includes a shaft seat 11 and a pivot shaft 12 disposed on the shaft base 11.

The support frame set 2 is connected to the base set 1 . The support set 2 includes a pivot seat 21 fixed to a column 23 and a spring 22 hooked to the shaft seat 11 at one end.

The magnetic damper brake 3 is spaced apart from the periphery of the flywheel 100. The magnetic damper brake 3 includes a magnetic element 31, a power member 32 and a pull rod 33. The magnetic element 31 has a rotatably coupled to the pivot base. a pivoting end 311 of the pivoting end, and a free end 312 which is hooked by the other end of the spring 22. The two ends of the rod 33 are respectively connected to the power member 32 and the free end 312, and are driven by the power member 32. The lever 33 is moved to pull or push the free end 312 of the magnetic member 31 to cause the magnetic member 31 to swing to move away from or near the flywheel 100.

Generally, when the flywheel 100 is used, the power member 32 can be driven to drive the pull rod 33 to pull or push the magnetic member 31 to swing, thereby moving the magnetic member 31 away from or close to the flywheel 100. When the magnetic element 31 is away from the flywheel 100, the magnetic attraction of the magnetic element 31 to the flywheel 100 is weak, which reduces the resistance of the user when operating the flywheel 100, and relatively, when the magnetic element 31 When the flywheel 100 is close to the flywheel 100, the magnetic attraction force generated by the magnetic element 31 on the flywheel 100 is strong, which increases the resistance of the user when operating the flywheel 100. Although the resistance control device has the above-described efficacy, the following problems exist:

1. Since the pull rod 33 and the flywheel 100 are disposed on both sides of the magnetic member 31, when the pull rod 33 is loosened or broken during pulling or pushing the magnetic member 31, the magnetic member 31 may be magnetically attracted. The action hits the flywheel 100, causing damage to the magnetic element 31 and the flywheel 100, increasing the maintenance cost of the magnetic element 31 and the flywheel 100.

2. Because the power rod 32 drives the pull rod 33 first, and then the magnetic rod 31 is pulled or pushed by the pull rod 33, the magnetic element 31 is not directly driven by the power member 32, which may affect the adjustment resistance. Precision.

Accordingly, it is an object of the present invention to provide a resistance control apparatus which can reduce the damage rate and maintenance cost of a magnetic element and a flywheel by directly driving a magnetic element using a cam.

Accordingly, the resistance control device of the present invention is adapted to control the resistance of a flywheel rotation, the resistance control device comprising a support unit, a magnetic damping brake unit, and a control unit.

The support unit includes a body, a first support shaft disposed on the frame body and rotatably sleeved with the flywheel, and a second support shaft and a third support shaft disposed on the frame body .

The magnetic damping brake unit is disposed adjacent to a circumference of the flywheel, the magnetic damping brake unit includes a magnetic component having one end pivotally connected to the second support shaft, and an adjustment component set disposed adjacent to the other end of the magnetic component .

The control unit includes a cam rotatably sleeved on the third fulcrum, the cam being operable to push against the set of adjusters to enable the magnetic element to move away from or near the flywheel relative to the frame body.

When the flywheel is used, the cam can be operated to push the adjustment member group to rotate as the user demands, thereby moving the magnetic member away from or close to the flywheel. Thus, the adjustment member group is directly driven only through the cam. Producing an effect of adjusting the distance between the magnetic element and the flywheel, controlling and adjusting the resistance when the flywheel rotates in a more precise and smooth manner, and the cam and the flywheel are disposed on the same side of the magnetic element, even if When the magnetic element and the flywheel are excessively close due to magnetic attraction, the magnetic element is resisted by the cam, so that the magnetic element can be prevented from colliding or rubbing the flywheel to cause damage, and the protection effect is obtained.

The utility model has the advantages that the direct driving of the cam is used to adjust the distance between the magnetic element and the flywheel to control the resistance when the flywheel rotates, wherein the direct adjustment of the adjusting member group through the cam can more accurately In addition to adjusting the resistance state of the flywheel to the user, and adding the cam and the flywheel to the same side of the magnetic element, the magnetic element can be prevented from directly impacting or rubbing the flywheel due to magnetic attraction, and the flywheel is added. The service life.

Referring to FIG. 2, FIG. 3 and FIG. 4, an embodiment of the resistance control device of the present invention is suitable for controlling the resistance of rotation of a flywheel 100. The resistance control device comprises a support unit 4, a magnetic damping brake unit 5, and a control. Unit 6, and a holding unit 7.

The support unit 4 includes a body 41 having two spaced-apart plates 411, and a first support shaft 42 , a second support shaft 43 and a third support shaft 44 disposed between the support plates 411 . .

The flywheel 100 is rotatably sleeved outside the first support shaft 42 and located between the support plates 411.

The magnetic damping brake unit 5 is disposed adjacent to the periphery of the flywheel 100 and includes a magnetic element 51 and an adjustment member set 52, wherein the magnetic element 51 has a rotatably sleeved on the second support shaft a rotating portion 511 outside the 43 and a free portion 512 in the opposite direction of the rotating portion 511, the adjusting member set 52 has a fixing rod 521 fixed to the magnetic member 51 and adjacent to the free portion 512, and a The driven member 522 of the magnetic member 51 is rotatably sleeved outside the fixing rod 521 and protrudes. In the embodiment, the driven member 522 is a Palin, and when the driven member 522 is driven by the control unit 6, the interference occurrence characteristics can be reduced, so that the adjustment work is smooth, but the driven member is smooth. 522 may also be other components that can be rotated in situ, have the same effect, and are not limited by the contents disclosed in the present specification.

The control unit 6 includes a cam 61 rotatably disposed outside the third support shaft 44 and pushed against the driven member 522, a circumferential surface 611 disposed on the cam 61 and away from the driven member 522. a radial insertion hole 62, a ring groove 63 disposed on the circumferential surface 611 of the wheel and communicating with the radial insertion hole 62, and a control line 64 having an insertion and fixing to the radial insertion hole 62 a fixing section 641, a winding section 642 extending from the fixing section 641 and surrounding the wheel circumferential surface 611 and located in the annular groove 63, and an operation section 643 extending from the winding section 642 by pulling The operation section 643 of the control line 64 is tightened or released, and the cam 61 can be rotated to push the wheel circumferential surface 611 against the driven member 522.

The holding unit 7 is disposed between the supporting unit 4 and the magnetic damping brake unit 5, and includes a connecting rod 71 disposed on the free portion 512 of the magnetic element 51, and the two ends are respectively connected to the connecting rod 71 and One of the plates 411 is an elastic member 72.

In this embodiment, the elastic member 72 is a tension spring, and the two ends thereof are respectively hooked and connected to the connecting rod 71 and the receiving plate 411, except that the free portion 512 of the magnetic element 51 can be pulled while the magnetic element 51 is The free portion 512 has a tendency to be close to the flywheel 100.

When the flywheel 100 is used, the control line 64 that can operate the control unit 6 drives the cam 61 to rotate as the user demands it, and the wheeled surface 611 of the cam 61 pushes the drive member 522 to move. In turn, the magnetic element 51 is swung away from or close to the flywheel 100, that is, because the distance between each portion of the circumferential surface 611 and the second support shaft 44 is different, when the cam 61 is rotated to the The meat thick portion of the wheel circumferential surface 611 is pushed against the driven member 522, and the distance between the driven member 522 and the second support shaft 44 is relatively large, and the magnetic member 51 is oppositely away from the flywheel 100 (see FIG. 3). At this time, the elastic member 72 is stretched to have a resilient force. When the cam 61 is rotated to the thin portion of the circumferential surface 611 of the wheel, the driven member 522 is pushed against the driven member 522 and the second support shaft 44. The distance between the magnet elements 51 is relatively small, and the magnetic member 51 is relatively close to the flywheel 100 (see FIG. 4), while the elastic member 72 is resiliently retractable to pull the free portion 512 of the magnetic member 51 close to the flywheel 100.

Therefore, the present invention utilizes the cam 61 to directly drive the driven member 522 to produce an effect of adjusting the distance between the magnetic member 51 and the flywheel 100, so that the flywheel 100 can be controlled and adjusted more accurately and smoothly. Resistance, it is important that since the cam 61 and the flywheel 100 are disposed on the same side of the magnetic element 51, even if the magnetic element 51 and the flywheel 100 are excessively close due to magnetization, since the magnetic element 51 is subjected to the cam The 61 is resisted, so that the magnetic element 51 can be prevented from colliding or rubbing the flywheel 100 to cause damage, and the service life of the flywheel 100 can be increased.

Referring to FIG. 5, the embodiment is mounted on an exerciser 200. The exerciser 200 includes a base 201 for fixing the embodiment, a pulley 202 spaced apart from the embodiment, and a flywheel connected thereto. a belt 203 of the pulley 202, a column 204 fixed to the base 201, a hand lever 205 swingably mounted to the column 204, and a second connecting the pulley 202 and the hand lever 205 The connecting rod 206, wherein reciprocatingly pulling and pushing the hand levers 205 can drive the connecting rods 206 to drive the pulleys 202 to rotate.

Referring to FIG. 5 and FIG. 2, in use, the reciprocating pulling and pushing of the hand lever 205 drives the connecting rod 206 to drive the pulley 202 to rotate, and then the transmission of the belt 203 drives the flywheel 100 to rotate, and the flywheel 100 The magnetic attraction of the magnetic element 51 of the magnetic damping brake unit 5 increases the resistance of the rotation. If the user needs to change the different rotational resistance, the cam 61 is driven to rotate by the control line 64 of the control unit 6. The distance between the magnetic element 51 and the flywheel 100 can be changed to achieve the effect of adjusting the rotational resistance of the flywheel 100 and the pulley 202.

In summary, the resistance control device of the present invention has the following advantages and advantages, and thus the object of the present invention can be achieved.

1. The cam 61 and the flywheel 100 are located on the same side of the magnetic element 51, and the cam 61 is pushed against the driven member 522 to maintain an appropriate distance between the magnetic element 51 and the flywheel 100. In addition, the probability that the cam 61 is loose or broken is very low, so the invention can effectively prevent the magnetic element 61 from directly impacting or rubbing the flywheel 100, and can reduce the damage rate of the magnetic element 61 and the flywheel 100, and reduce maintenance. The cost can simultaneously increase the service life of the magnetic element 61 and the flywheel 100.

2. The present invention uses the cam 61 to directly push against the driven member 522 to control the distance between the magnetic member 51 and the flywheel 100. Thus, the rotational resistance of the flywheel 100 can be adjusted accurately and stably to meet the use. User needs.

3. The structure of the cam 61, the driven member 522, the fixing rod 521, and the magnetic member 51 is excellent in strength, and the overall damage rate can be effectively reduced.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

100‧‧‧ flywheel

200‧‧‧ exerciser

201‧‧‧Base

202‧‧‧ Pulley

203‧‧‧Land

204‧‧‧ column

205‧‧‧Hand rocker

206‧‧‧ Connecting rod

1‧‧‧Pedestal group

11‧‧‧ shaft seat

12‧‧‧ pivot

2‧‧‧Support frame group

21‧‧‧ squat

22‧‧‧ Spring

23‧‧‧ Column

3‧‧‧Magnetic Damping Brake

31‧‧‧Magnetic components

311‧‧‧ pivot end

312‧‧‧Free end

32‧‧‧Power parts

33‧‧‧ lever

4‧‧‧Support unit

41‧‧‧ body

411‧‧‧ board

42‧‧‧First shaft

43‧‧‧second shaft

44‧‧‧third shaft

5‧‧‧Magnetic Damping Brake Unit

51‧‧‧Magnetic components

511‧‧‧Rotation

512‧‧ Free Department

52‧‧‧Adjustment group

521‧‧‧Fixed rod

522‧‧‧Driven parts

6‧‧‧Control unit

61‧‧‧ cam

611‧‧‧round

62‧‧‧ radial jack

63‧‧‧ Ring groove

64‧‧‧Control line

641‧‧‧Fixed section

642‧‧‧Wind section

643‧‧‧Operation section

7‧‧‧ Holding unit

71‧‧‧ Connecting rod

72‧‧‧Flexible parts

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a partial plan view of a conventional resistance control device illustrating the use of a power member and a tie rod to control a magnetic element Figure 2 is a perspective view showing an embodiment of the resistance control device of the present invention and a structure of a flywheel; Figure 3 is a side elevational view showing a cam of the embodiment pushed against a magnetic element, And the magnetic element is located away from the flywheel; FIG. 4 is a view similar to FIG. 3, illustrating the magnetic element is located adjacent to the flywheel; and FIG. 5 is a side view showing the embodiment mounted to an actuator The way.

Claims (8)

A resistance control device is adapted to control the resistance of a flywheel rotation. The resistance control device comprises: a support unit comprising a body, a first branch disposed on the frame body and rotatably sleeved the flywheel a shaft, and a second shaft and a third shaft disposed on the frame body; a magnetic damping brake unit disposed adjacent to a circumference of the flywheel, the magnetic damping brake unit including one end pivotally connected thereto a magnetic member of the second shaft, and a set of adjusting members disposed adjacent to the other end of the magnetic member; and a control unit including a cam rotatably sleeved on the third shaft, the cam being Operating to push the set of adjustments to enable the magnetic element to move away from or near the flywheel relative to the frame body. The resistance control device of claim 1, wherein the magnetic member has a rotating portion rotatably disposed outside the second fulcrum, and a free portion located in an opposite direction of the rotating portion. The resistance control device of claim 2, wherein the adjustment member set of the magnetic damping brake unit has a fixing rod fixed to the magnetic element and adjacent to the free portion, and a rotatably sleeved on the fixing The driven member of the magnetic member is protruded outside the rod. The resistance control device of claim 3, wherein the driven member is a Palin. The resistance control device of claim 3, wherein the control unit further comprises a radial insertion hole disposed on a circumferential surface of the cam and away from the driven member, a circumferential surface of the wheel and communicating with the diameter a ring groove to the jack, and a control line surrounding the circumferential surface of the wheel and accommodated in the ring groove. The resistance control device of claim 5, wherein the control line has a fixed section that is inserted and fixed to the radial insertion hole, and extends from the fixed section and surrounds the circumferential surface of the wheel and is located in the ring groove. a winding section and an operating section extending from the winding section. The resistance control device of claim 2, wherein the frame body has two spaced apart plates, and the flywheel is located between the plates. The resistance control device of claim 7, further comprising a holding unit disposed between the supporting unit and the magnetic damping braking unit, the holding unit comprising a connecting rod disposed at a free portion of the magnetic element, And an elastic member connecting the connecting rod and one of the receiving plates respectively.