TWI727767B - Magnetic control foot pedal - Google Patents

Abstract

A magnetically controlled foot pedal includes a rotating unit, a pedal unit and a magnetic resistance unit. The rotating unit includes a rotatable worm wheel and a worm meshed with the worm wheel. The pedal unit includes a crank and two pedals. The magnetoresistive unit is used to generate movement resistance when stepping on the pedals and includes a rotating disc group, a magnetic group and an adjustment group. The rotating disc group rotates with the worm and has at least one metal surface, and the metal surface is non-magnetic. The magnetic group has magnetism and faces the metal surface, and the magnetic group is separated from the metal surface by a distance. The rotating unit drives the rotating disc group to rotate relative to the magnetic group, which can generate magnetoresistance as movement resistance. The adjustment group is used to drive the magnetic group to move relative to the rotating disk group to adjust the distance, thereby changing the size of the movement resistance.

Description

Magnetic control foot pedal

The invention relates to a training device, in particular to a magnetically controlled foot pedal.

As shown in FIG. 1, a pedal device 1 taking the Republic of China Patent Publication No. M419585 as an example, includes a support frame 11, a shaft tube 12, a crank shaft 13, two pedals 14 and a resistance adjustment button 15. The shaft tube 12 is disposed on the top side of the support frame 11, the crank shaft 13 is rotatably penetrated through the shaft tube 12, the pedals 14 are respectively disposed at two opposite ends of the crank shaft 13, and the resistance adjustment button 15 It rotatably penetrates the shaft tube 12 and makes frictional contact with the crankshaft 13. By adjusting the friction between the resistance adjustment knob 15 and the crankshaft 13, the rotation resistance of the crankshaft 13 can be changed, and the resistance of the crankshaft 13 can be changed. The effect of resistance training.

Although the pedal 1 has the above-mentioned characteristics of use, as the pedaling speed of the user becomes faster, the rotation resistance of the crankshaft 13 is only dynamic friction, which will make the user feel that the pedaling becomes easier and less effortless. Therefore, The exercise effect is not good.

Therefore, the purpose of the present invention is to provide a magnetically controlled foot pedal with better exercise effect.

Therefore, the magnetically controlled foot pedal of the present invention includes a bracket unit, a rotating unit, a pedal unit and a magnetoresistive unit.

The rotating unit is disposed on the bracket unit, and the rotating unit includes a rotatable worm gear and a worm meshed with the worm gear, and the worm extends along a first direction. The pedal unit includes a crank and two pedals. The crank penetrates the worm gear along a second direction and is used to drive the worm gear to rotate around a central axis. The second direction is substantially perpendicular to the first direction, and the The central axis is parallel to the second direction, and the pedals are respectively arranged on two opposite sides of the crank and used for pedaling.

The magnetoresistive unit is used to generate movement resistance when stepping on the pedals. The magnetoresistive unit includes a rotating disc group, a magnetic group and an adjustment group. The rotating disk set is arranged at an end of the worm opposite to the worm wheel and as the worm rotates, the rotating disk set has at least one metal surface, and the metal surface is non-magnetic and perpendicular to the first direction. The magnetic group has magnetism and faces the metal surface, and the magnetic group and the metal surface are separated by a distance in the first direction. The rotating unit drives the rotating disc group to rotate relative to the magnetic group to generate magnetic resistance Take it as exercise resistance. The adjustment group is used to drive the magnetic group to move relative to the rotating disk group to adjust the distance, thereby changing the size of the movement resistance.

The effect of the present invention is: the present invention uses the rotating disc group and the magnetic group The induced magnetic field generated during the relative rotation acts as the magnetic resistance. The faster the pedals are stepped on, the higher the motion resistance generated, so the motion effect of the present invention is better.

2: bracket unit

21: Tripod

211: Bottom Tube

212: Stop slider

213: Inclined tube

22: pivot seat

221: connecting piece

222: hook piece

3: Rotating unit

31: Shell seat

310: room

311: Block

32: Worm gear

33: Worm

4: Pedal unit

41: crank

411: Hinge

412: connecting rod

42: Pedal

500: Magnetoresistive unit

6: Shell

60: installation room

61: bottom cover

62: front cover

63: upper cover

7: Rotate the plate set

71: wheel seat

72: Roulette

73: Metal ring piece

731: Metal surface

8: Magnetic group

81: Magnetic parts

9: adjustment group

9': adjustment group

91: screw

92: Nut

93: mounting plate

94: limit plate

95: Rotating part

96: Axle seat

961: Axle

97: Elastic

98: Push seat

D: spacing

CL: central axis

RL: axis of rotation

X: second direction

Y: first direction

Z: Third party

The other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is a three-dimensional view illustrating an existing pedal device; FIG. 2 is the magnetic control pedal device of the present invention A perspective view of the first embodiment; FIG. 3 is a partially exploded perspective view of the first embodiment, and a pedal unit is omitted in the figure; FIG. 4 is a side view illustrating the first embodiment in a stored state Example; Figure 5 is a schematic cross-sectional view of a rotating unit and a magnetoresistive unit of the first embodiment; Figure 6 is a partially exploded perspective view of the rotating unit and the magnetoresistive unit; Figure 7 is the An incomplete schematic side view of the rotating unit and the magnetoresistive unit; and FIG. 8 is a schematic cross-sectional view similar to FIG. 5, illustrating the second embodiment of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

Referring to FIGS. 2 to 4, the first embodiment of the magnetically controlled foot pedal of the present invention includes a bracket unit 2, a rotating unit 3, a pedal unit 4 and a magnetoresistive unit 500.

The support unit 2 includes two legs 21 spaced apart in a first direction Y, and a pivot seat 22 provided on the legs 21. Each tripod 21 has a bottom tube 211 extending in a second direction X, two stop sliders 212 respectively fixed to two opposite ends of the bottom tube 211, and an inclined tube extending upward from the bottom tube 211 213, and the inclined tubes 213 extend obliquely to each other, and the second direction X is substantially perpendicular to the first direction Y. The bottom end of the pivoting seat 22 is open and connected to the inclined tubes 213. Preferably, the pivoting seat 22 has two connecting pieces 221 for the pivoting of the inclined tubes 213, and two The hook pieces 222 are arranged at intervals in the second direction X, each connecting piece 221 is bent into an inverted U-shaped tube with an open bottom end, and two sides of each hook piece 222 are respectively connected to the connecting pieces 221 . The legs 21 can be pivoted relative to the pivot seat 22 to the storage state where the inclined tubes 213 overlap each other, and the storage volume is small and does not take up space.

Referring to Figures 2, 5 and 6, the rotating unit 3 is opposite to the legs 21 in a third direction Z and is disposed on the pivot seat 22 of the support unit 2, and the third direction Z is substantially vertical In the first direction Y and the second direction X. The rotating unit 3 includes a housing 31, a rotatable worm wheel 32 and a worm 33 meshing with the worm wheel 32. For convenience Observation and description, the worm wheel 32 and the worm 33 in the drawings are respectively shown in a wheel shape and a rod shape, but it can be understood that the worm wheel 32 has teeth and the worm 33 has threads. The shell seat 31 is formed by two seat bodies 311 that are aligned with each other and surrounds and defines a chamber 310. The worm gear 32 is disposed in the chamber 310 and rotates around a central axis CL, which is parallel to the center axis CL. In the second direction X, the worm 33 extends along the first direction Y and is located on the bottom side of the worm wheel 32 in the third direction Z. The worm 33 is driven by the worm wheel 32 and rotates with a rotation axis RL as the center. The rotation axis RL is parallel to the first direction Y. Preferably, the transmission ratio of the worm gear 32 to the worm 33 is 1:26.

The pedal unit 4 includes a crank 41 and two pedals 42. The crank 41 penetrates the worm gear 32 along the second direction X and is used to drive the worm gear 32 to rotate around the central axis CL. Preferably, the crank 41 There is a rotating shaft 411 fixed to the worm gear 32 and two connecting rods 412 respectively connected to the two shaft ends of the rotating shaft 411. The pedals 42 are respectively arranged on the connecting rods 412 and used for stepping. When the pedals 42 are stepped on, the crank 41 will drive the worm wheel 32 to rotate around the central axis CL, and in conjunction with the worm 33 to rotate around the rotation axis RL.

The magnetoresistive unit 500 is used to generate movement resistance when stepping on the pedals 42. The magnetoresistive unit 500 includes a housing 6, a rotating disc group 7, a magnetic group 8 and an adjustment group 9. The shell cover 6 is adjacent to the shell base 31 and surrounds and defines an installation chamber 60. Preferably, the shell cover 6 has a bottom cover 61 leaning against the shell base 31 and a combined connection along the first direction Y On the front cover 62 of the bottom cover 61, and a cover provided on the bottom along the third direction Z For the cover 61 and the upper cover 63 of the front cover 62, preferably, the worm 33 extends from the accommodation chamber 310 of the housing base 31 to the installation chamber 60 of the housing cover 6. With the design and configuration of the housing base 31 and the housing cover 6, the internal mechanism can be protected from dust, the smoothness of rotation can be maintained, and the hands or feet can be prevented from being involved, and the safety is high.

5, 6 and 7, the rotating disk set 7 is located in the installation chamber 60 and is arranged at an end of the worm 33 opposite to the worm wheel 32. The rotating disk set 7 follows the worm 33 around the rotation axis RL It rotates and has a wheel seat 71 for the worm 33 to pass and fix, a wheel disk 72 ringed on the wheel seat 71, and a wheel disk 72 locked to the wheel disk 72 and extending radially outward from the wheel disk 72 The metal ring 73 is made of a non-magnetic metal material, such as aluminum or copper. In the first embodiment, aluminum is used. The metal ring piece 73 has two metal surfaces 731 perpendicular to the first direction Y, and the metal surfaces 731 are oppositely arranged in the first direction Y. In other variations, the rotating disc assembly 7 can also omit the wheel seat 71 and the wheel disc 72, and directly connect the metal ring piece 73 to the worm 33, which also has the function of rotating with the worm 33.

The magnetic assembly 8 is located in the installation chamber 60 and is higher than the worm 33 in the third direction Z. The magnetic assembly 8 of the first embodiment has two magnetic members 81 facing the metal surfaces 731, each The magnetic parts 81 are magnetic. Preferably, each magnetic part 81 is a permanent magnet. Each magnetic piece 81 and the corresponding metal surface 731 are separated by a distance D in the first direction Y, and the magnetic resistance generated by the rotation unit 3 driving the rotating disc group 7 relative to the magnetic group 8 is used as Movement resistance. In other implementation styles Here, the number of the magnetic parts 81 can also be one, or more than three, as long as they are arranged along the metal ring 73, and the more the number of the magnetic parts 81, the greater the magnetic resistance generated.

The adjustment set 9 has a screw 91 extending along the first direction Y and penetrating the housing 6, two nuts 92 rotatably disposed on the screw 91, two nuts 92 respectively fixed to the nuts 92 and The mounting plate 93 driven by the nuts 92, two limit plates 94 fixed on the shell 6 and sleeved on the screw 91, and a screw exposed on the shell 6 and fixedly connected to the screw 91 Movement 95. The screw 91 is a positive and negative rod. The nuts 92 are right and left nuts respectively. Therefore, when the screw 91 rotates around its axis, the nuts 92 will be relatively close to or keep away. The number of the mounting plates 93 corresponds to the number of the magnetic parts 81 and is provided for the magnetic parts 81 respectively. The mounting plates 93 are respectively connected to the nuts 92 and follow the nuts 92 in the screw rod. Move in the opposite direction on 91. The limit plates 94 are fixed to the upper cover 63 of the housing 6 and are respectively pushed by the top ends of the mounting plates 93, so that the mounting plates 93 are restricted to only move in translation without rotating with the screw 91. To stop the mounting plate 93 on the left side and the nut 92 on the right side in the drawing to achieve a limit effect.

By rotating the rotating member 95, the screw 91 can be driven to rotate, and the magnetic members 81 can be moved closer to or farther away from the rotating disk assembly 7, so as to adjust the distance D, thereby changing the magnitude of the movement resistance, for example When the magnetic parts 81 are closer to the rotating disk assembly 7, the distance D becomes smaller, and the movement resistance will increase. Preferably, the rotating member 95 is a kind of knob, which can be turned by hand. Therefore, the invention can be operated without electricity and is suitable for various occasions. In other variations, the rotating member 95 can also be a crank handle or other equivalent components, as long as the screw 91 can be rotated manually.

It should be noted that the adjustment set 9, the magnetic set 8 and the worm gear 32 of the first embodiment are located on the same side of the worm 33 in the third direction Z, thereby enabling the rotation of the rotating member 95 The arrangement position is closer to the user, which is convenient for adjusting the movement resistance, and at the same time, it can avoid interference with the pedals 42.

In this way, the user sits on a chair (not shown in the figure) and places the present invention on the ground in front of the user to start a pedaling exercise. The present invention uses the magnetic resistance generated when the metal ring sheet 73 of the rotating disc group 7 and the magnetic group 8 rotate relative to each other as the movement resistance. As the pedals 42 are stepped on faster, the magnetic resistance generated is greater The higher the movement resistance, the higher the movement resistance. Compared with the conventional use of rotational friction as the movement resistance, the present invention uses the induction magnetic field as the movement resistance. The higher the pedaling speed, the higher the movement resistance. Therefore, It is necessary to pedal harder, so the exercise effect of the present invention is better. In addition, the present invention also uses the adjustment group 9 to achieve the effect of steplessly adjusting the motion resistance without electricity, which is convenient for the user to select a suitable motion resistance. Therefore, the present invention can save electricity costs and has good applicability. At the same time, since the present invention uses non-contact magnetic resistance as the movement resistance, compared to the way that friction is used as the movement resistance, the invention does not generate friction and heat, and is safer in use.

Refer to Figure 8, which is a second embodiment of the magnetically controlled foot pedal of the present invention. The embodiment is similar to the first embodiment, and the main difference is that the worm 33 is located on the top side of the worm wheel 32 in the third direction Z.

The adjustment group 9 ′ has a shaft seat 96, an elastic member 97, a pushing seat 98 and the rotating member 95. The shaft seat 96 is fixed to the housing 6 and has a shaft 961 extending along the first direction Y. The elastic member 97 is a compression spring and can be elastically sleeved on the shaft 961. The push seat 98 is movably sleeved on the shaft 961 and used for pushing against the elastic member 97, and the rotating member 95 is rotatably installed on the shaft 961 and used for pushing the pushing seat 98.

One of the magnetic parts 81 is fixed on the casing 6 and faces one of the metal surfaces 731, and the other magnetic part 81 is installed on the pushing seat 98 and faces the other metal surface 731, by rotating the rotating part 95 The pushing seat 98 can be pushed to move in the direction of the rotating disc assembly 7, and the distance D between the other magnetic member 81 and the other metal surface 731 can be shortened. At the same time, the elastic member 97 accumulates a constant to make the pushing seat 98 reset potential. The second embodiment also has the same effect of being able to adjust the distance D to change the movement resistance.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to Within the scope covered by the patent of the present invention.

3: Rotating unit

31: Shell seat

311: Block

32: Worm gear

33: Worm

411: Hinge

500: Magnetoresistive unit

6: Shell

61: bottom cover

62: front cover

63: upper cover

7: Rotate the plate set

73: Metal ring piece

9: adjustment group

91: screw

93: mounting plate

94: limit plate

95: Rotating part

CL: central axis

X: second direction

Y: first direction

Z: Third party

Claims (10)

A magnetically controlled foot pedal, comprising: a bracket unit; a rotating unit arranged on the bracket unit, the rotating unit including a rotatable worm gear and a worm meshed with the worm gear, the worm extending in a first direction; A pedal unit includes a crank and two pedals, the crank is arranged through the worm wheel along a second direction and used to drive the worm wheel to rotate around a central axis, the second direction being substantially perpendicular to the first direction, and The central axis is parallel to the second direction, the pedals are respectively arranged on two opposite sides of the crank and used for pedaling; and a magnetoresistive unit for generating movement resistance when the pedals are stepped on, the magnetoresistive unit including : A rotating disc set, arranged at an end of the worm opposite to the worm wheel and rotating with the worm, the rotating disc set has at least one metal surface, the metal surface being non-magnetic and perpendicular to the first direction; a magnetic The group has magnetism and faces the metal surface. The magnetic group and the metal surface are separated by a distance in the first direction. The rotating unit drives the rotating disc group to rotate relative to the magnetic group, which can generate magnetic resistance to As the movement resistance, an adjustment group is used to drive the magnetic group to move relative to the rotating disk group to adjust the distance, thereby changing the size of the movement resistance. The magnetically controlled foot pedal according to claim 1, wherein the rotating disc group has two metal surfaces, the metal surfaces are arranged in opposite directions in the first direction, and the magnetic The sex group has two magnetic parts facing the metal surfaces respectively. The magnetically controlled foot pedal according to claim 2, wherein the rotating disc group has a metal ring piece extending radially outward, and the metal ring piece has the metal surfaces. The magnetically controlled foot pedal according to claim 3, wherein the rotating disc assembly further has a wheel seat for the worm to pass through and a fixed wheel, and a wheel ring arranged on the wheel seat and fixed by the metal ring piece. The magnetically controlled foot pedal according to claim 1, wherein the adjustment group has a screw extending along the first direction, at least one nut rotatably disposed on the screw, and at least one nut driven by the nut The magnetic assembly has at least one magnetic member corresponding to the mounting plate in number, and the magnetic member is disposed on the mounting plate and faces the metal surface. The magnetically controlled foot pedal according to claim 5, wherein the magnetic member is a permanent magnet. The magnetically controlled foot pedal according to claim 5, wherein the rotating disc group has two metal surfaces, the adjustment group has two nuts and two mounting plates, and the mounting plates move in opposite directions The magnetic assembly has two magnetic parts, and the magnetic parts are respectively fixed on the mounting plates and face the metal surfaces. The magnetically controlled foot pedal according to claim 5, wherein the adjustment group further has a rotating member arranged on the screw, and the rotating member is used to drive the screw to rotate. The magnetically controlled pedal according to claim 1, wherein the adjustment group and the worm wheel are located on the same side of the worm in a third direction, and the third direction is substantially perpendicular to the first direction and the second direction . The magnetically controlled foot pedal according to claim 1, wherein the rotating unit also includes The magneto-resistance unit also includes a housing adjacent to the housing and surrounding and delimiting a housing for the rotating disc assembly and the worm gear. The magnetic assembly is provided in an installation chamber, and the worm extends from the housing chamber of the housing to the installation chamber of the housing.

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