TWM638705U - Exercise machine and resistance device thereof - Google Patents

Abstract

A sports machine and its resistance device, the resistance device comprises an axis unit, a first blade unit with several first blades, a second blade unit with several second blades, and a braking unit . The first blade unit and the second blade unit are arranged on the shaft unit and can rotate around an axis. The first blades and the second blades cooperate to form a plurality of wind-receiving surfaces. The detent unit is used to drive the first blade unit to move relative to the second blade unit between a first position and a second position along the axis, wherein the wind receiving surfaces of the first position The area of is larger than the area of the wind receiving surfaces of the second position. The user can change the size of the resistance by adjusting the size of different wind receiving areas.

Description

Exercise machine and its resistance device

The present invention relates to an exercise equipment, in particular to an exercise machine with a simple structure and a resistance device thereof.

In general, the fan bike allows the user to step on two pedals with both feet, and the wind resistance wheel is driven to rotate by a transmission element such as a chain or a belt, and the user can use the rotation resistance provided by the wind resistance wheel to achieve the effect of exercise and fitness.

Referring to Fig. 1, a kind of fan car created by the applicant of this case and obtained the New Patent No. TWM549090U of the Republic of China as an example mainly adjusts the exercise intensity by changing the rotational resistance of a metal disc. The resistance device of the fan car includes a magnetic resistance unit 91 and an adjustment line 92 . The reluctance unit 91 includes a metal turntable 911, an adjustment seat 912 that can swing relative to the metal turntable 911 with a shaft 93 as the center, and two metal turntables 911 mounted on the adjustment seat 912 and spaced apart from each other. The magnet 913 on the opposite side. One end of the adjustment wire 92 is fixed on the adjustment seat 912 and can drive the adjustment seat 912 to swing around the shaft 93, so the overlapping area between the magnets 913 and the metal turntable 911 can be changed to adjust the distance between the two. The resulting magnetoresistance.

Since the fan cart is mainly designed with reluctance, and the resistance is controlled by the magnetic induction between the magnets 913 and the metal turntable 911, the cost is high and the structure is complicated.

Therefore, the object of the present invention is to provide a resistance device for a sports machine with a simple structure and low cost.

Therefore, the resistance device of the new exercise machine includes an axis unit, a first blade unit, a second blade unit, and a braking unit.

The shaft center unit includes a fixed shaft extending along an axis, and a shaft member rotatably arranged outside the fixed shaft.

The first blade unit is arranged on the shaft and rotates around the axis as the shaft rotates. The first blade unit has a plurality of first blades that are angularly staggered in a circumferential direction around the axis.

The second blade unit and the first blade unit are spaced apart from each other on the shaft and rotate around the axis as the shaft rotates. The second blade unit has several angles that are staggered from each other in the circumferential direction around the axis. The first blades and the second blades cooperate together to form a plurality of wind-receiving surfaces.

The detent unit is used to drive the first blade unit to move relative to the second blade unit between a first position and a second position along the axis, and the area of the wind receiving surfaces at the first position The area of the windward surfaces is greater than that of the second location.

Therefore, another object of the present invention is to provide an exercise machine with simple structure and low cost.

Therefore, the new exercise machine includes a body, an operating unit, and the aforementioned resistance device.

The operation unit is arranged on the body and is operated by a user.

The resistance device is installed on the body and used to provide movement resistance to the operation unit.

The effect of the new model is: use the detent unit to drive the first blade unit to move relative to the second blade unit along the axis to adjust the area of the wind-receiving surfaces, thereby changing the first blade unit and the second blade unit. The rotation resistance of the second blade unit is used to regulate the exercise intensity.

Referring to FIG. 2 to FIG. 4 , an embodiment of the new exercise machine includes a body 1 , a transmission unit 2 , an operation unit 3 , and a resistance device 4 . This embodiment is a rowing machine, which can simultaneously exercise the muscles of the limbs and the upper body by simulating the training of rowing.

The body 1 includes a base 11 extending along a front-rear direction L1, a fork 12 connected to the front end of the base 11, a rear frame 13 connected to the rear end of the base 11, and a frame mounted on the base 11. cushions14.

The transmission unit 2 includes a rotating wheel set 21 rotatably disposed on the body 1 , a transmission belt 22 wound around the rotating wheel set 21 , and a casing 23 covering the rotating wheel set 21 and the transmission belt 22 . The rotating wheel set 21 has a rotating wheel 211, a drive shaft 212 that passes through the rotating wheel 211 along a left-right direction L2 and can drive the rotating wheel 211 to rotate, and one end is fixed on the base 11 and is wound around the driving shaft. Drive chain 213 for shaft 212 .

The operating unit 3 includes a grip bar 31 connected to the other end of the driving chain 213 and held by the user's hands, and two handles respectively arranged on the left and right sides of the main body 1 and fixed by the user's feet. Pedal 32. When the user sits on the cushion 14, bends his feet and steps on the pedals 32, and holds the handle bar 31 tightly with both hands, he can repeatedly pull the handle bar 31 to drive the rotating wheel set 21 to rotate in a rowing motion. The effect of exercise and fitness.

Referring to FIG. 4 to FIG. 6 , the resistance device 4 is disposed on the body 1 and connected to the transmission unit 2 . The resistance device 4 includes an axis unit 5 , a first blade unit 6 , a second blade unit 7 , a casing 15 (see FIG. 3 ), and a braking unit 8 .

The axis unit 5 is arranged at the front end of the body 1 and is connected to the transmission belt 22 of the transmission unit 2 and driven by the transmission unit 2 . The axis unit 5 has a fixed shaft 51 extending along an axis X parallel to the left-right direction L2, a shaft member 52 rotatably arranged outside the fixed shaft 51, and two shafts arranged on the left and right sides of the fixed shaft 51. Both ends are fixed bearings 53 fixed between the fixed shaft 51 and the shaft member 52 . Due to the support of the fixed bearings 53 , there is an inner shaft space 50 between the fixed shaft 51 and the shaft member 52 .

The fixed shaft 51 has a shaft hole 511 extending along the axis X with an open left side, and a sliding groove 512 extending along a vertical direction L3 perpendicular to the axis X and communicating with the shaft hole 511 . The chute 512 is an oval groove.

The shaft 52 can rotate relative to the fixed shaft 51, and has a surrounding wall 521 surrounding the axis X, and a connection surrounding the axis X and extending leftward from the surrounding wall 521 and having a larger outer diameter than the surrounding wall 521 wall 522. The surrounding wall 521 is formed with a plurality of limiting grooves 523 perpendicular to the axis X and penetrating inside and outside, and the limiting grooves 523 communicate with the inner space 50 of the shaft. The connecting wall 522 forms a tooth segment 524 for the transmission belt 22 to wind around.

Referring to FIGS. 5 to 7 , the first blade unit 6 is disposed on the shaft 52 and rotates around the axis X along with the shaft 52 . The first blade unit 6 has a first bushing 61 movably sleeved outside the shaft 52, a first base 62 fixed on the first bushing 61 and generally in the shape of a disc, and A plurality of first blades 63 are vertically arranged on the first base 62 and angularly staggered from each other in the circumferential direction around the axis X. As shown in FIG.

The first sleeve 61 has several positioning holes 611 extending along the direction perpendicular to the axis X and corresponding to the position-limiting slots 523 of the shaft member 52, and several locks formed on the outer periphery and circumferentially arranged Solid hole 612. The locking holes 612 respectively allow a plurality of locking pieces 613 to pass through, so that the first base 62 is fixed on the first sleeve 61 .

The second blade unit 7 is spaced apart from the first blade unit 6 on the shaft 52 and rotates around the axis X together with the shaft 52 . The second blade unit 7 has a second shaft sleeve 71 fixed on the shaft member 52, a second base 72 connected to the second shaft sleeve 71 and in the shape of a disk as a whole, and several vertically arranged The second base 72 and the second blades 73 are angularly staggered from each other in the circumferential direction around the axis X. The second vanes 73 and the first vanes 63 face each other.

The braking unit 8 has a thrust bearing set 81 disposed between the fixed shaft 51 and the shaft member 52 and located in the shaft inner space 50, and a thrust bearing set 81 that can pass through the sliding groove 512 along the up-down direction L3 and connect the The driving block 82 of the thrust bearing group 81, a linking cable 83 penetrating into the shaft hole 511 along the left-right direction L2 and connected to the driving block 82, and several positioning holes 611 of the first shaft sleeve 61 respectively Pass through the limiting grooves 523 of the shaft member 52 and connect to the connecting member 84 of the thrust bearing set 81 , and set on the fixed shaft 51 with both ends abutting against the thrust bearing set 81 and the thrust bearing set 81 respectively. The elastic member 85 of the fixed bearing 53 on the left side. In this embodiment, the elastic member 85 is a spring.

Each connecting member 84 has a bushing 841 passing through the shaft member 52 and connected to the corresponding positioning hole 611, and a screw 842 passing through the bushing 841 and locking on the thrust bearing set 81 .

Referring to Figures 3 to 5, the other end of the interlocking cable 83 is provided with a knob 86, the operation of the knob 86 can drive the interlocking cable 83 to pull the driving block 82 to move relative to the chute 512, and the driving block 82 is linked to the thrust The bearing group 81 moves to the left, and the thrust bearing group 81 simultaneously drives the connecting parts 84 to move relative to the limiting groove 523, so as to move the first shaft sleeve 61 relative to the shaft part 52, and the elastic part 85 is squeezed to accumulate an elastic restoring force to reset the thrust bearing set 81 .

7 to 9, each of the first blades 63 of the first blade unit 6 is fence-shaped and has several first pieces 631 arranged at intervals, and several first sheets 631 are arranged at intervals. 631 between the first opening 632 . Each of the second blades 73 of the second blade unit 7 is fence-shaped and has a plurality of second sheet parts 731 arranged at intervals, and a plurality of second openings arranged at intervals between the second sheet parts 731 732. A plurality of wind-receiving surfaces 600 are formed by the first blades 63 and the second blades 73 . Each of the first blades 63 is similar in shape and structure to each of the second blades 73, the only difference being that each of the first blades 63 has two grooves 633 respectively arranged on both sides, and each of the second blades 73 has two protruding strips 733 respectively disposed on both sides, and the protruding strips 733 can fit into the grooves 633 respectively.

Referring to FIG. 5, FIG. 10 and FIG. 11, the detent unit 8 is used to drive the first blade unit 6 along the axis X relative to the second blade unit 7 in a first position (FIG. 10) and a first position. Move between two positions (Fig. 11).

Referring to FIG. 8 and FIG. 10 , when the first blade unit 6 is in the first position, the first base 62 is away from the second base 72 , and the first pieces 631 cover the second openings 732 At least a portion of the second sheet portions 731 cover at least a portion of the first openings 632 . In this embodiment, the second openings 732 are completely covered by the two first pieces 631, and the first openings 632 are completely covered by the two second pieces 731. Therefore, the first blades 63 and the The rotation resistance of the second blade 73 is relatively large.

9 and 11, when the first blade unit 6 is in the second position, the first base 62 is close to the second base 72, and the first openings 632 and the second openings 732 are completely Overlapping, the first sheet parts 631 and the second sheet parts 731 are completely overlapped, and the elastic member 85 is squeezed to accumulate the elastic restoring force. Therefore, the rotation resistance of the first vanes 63 and the second vanes 73 is relatively small. In addition, it should be noted that when the first blade unit 6 moves relative to the second blade unit 7, the protrusions 733 can be aligned with the track design of the grooves 633 to improve the smoothness of movement. .

It is worth mentioning that, in this embodiment, each wind-receiving surface 600 refers to a surface in contact with air. Since the area of the wind receiving surfaces 600 at the first position is larger than the area of the wind receiving surfaces 600 at the second position, the rotational resistance at the first position is greater than that at the second position.

Referring to Fig. 4, Fig. 10 and Fig. 11, when the user needs a higher exercise intensity, he only needs to operate the knob 86 to move the first blade unit 6 to the first position to increase the wind receiving surfaces 600 area for higher rotational resistance. Conversely, when the user needs a lower exercise intensity, as long as the knob 86 is operated to move the first blade unit 6 to the second position, the area of the wind receiving surfaces 600 can be reduced to obtain a lower exercise intensity. rotational resistance.

It should be noted that the number of the first openings 632 of each first blade 63 is not limited to two, and can also be three or more, as long as the area of the wind receiving surfaces 600 can be changed. Yes, the present invention is not limited thereto.

It is worth mentioning that the exercise machine in this embodiment is a rowing machine, but the resistance device 4 can also be applied to a fan car or other exercise equipment that also achieves fitness through resistance training.

Through the above description, the advantages of the aforementioned embodiments can be summarized as follows:

1. The first blade unit 6 is driven by the detent unit 8 to move between the first position and the second position relative to the second blade unit 7, so that the user can adjust different wind exposure according to requirements. The size of the area can achieve the effect of adjusting the size of the resistance.

2. Compared with the existing mechanism that utilizes magnetic resistance to achieve resistance adjustment, this embodiment adjusts the area of the wind-receiving surfaces 600 through the design of the first blades 63 and the second blades 73 that can overlap each other. Changing the movement resistance, the cost of this embodiment is lower and the structure is simpler.

But the above-mentioned ones are only embodiments of the present invention, and should not limit the scope of implementation of the present invention with this. All simple equivalent changes and modifications made according to the patent scope of the present application and the content of the patent specification are still within the scope of the present invention. Within the scope covered by this patent.

1: Ontology 11: base 12: fork bracket 13: rear frame 14: Cushion 15: shell seat 2: Transmission unit 21: Rotating wheel set 211: rotating wheel 212: drive shaft 213: drive chain 22: Drive belt 23: Shell 3: Operation unit 31: Grip 32: Pedal 4: resistance device 5: Axis unit 50: Inner shaft space 51: fixed axis 511: shaft hole 512: Chute 52: Shaft 521: around the wall 522: connecting wall 523: limit slot 524: gear segment 53: fixed bearing 6: The first blade unit 600: wind side 61: The first shaft sleeve 611: positioning hole 612: locking hole 613: lock piece 62: First base 63: First blade 631: The first part 632: first opening 633: Groove 7: The second blade unit 71: Second shaft sleeve 72:Second base 73: Second blade 731: The second part 732: second opening 733: Convex 8: Detent unit 81: Thrust bearing set 82: Pull block 83: link cable 84: connector 841: Bushing 842: screw 85: Elastic parts 86: Knob 91: Magnetic resistance unit 911: metal turntable 912: Adjustment seat 913: magnet 92: Adjustment line 93: Shaft X: axis L1: Front and rear direction L2: left and right direction L3: up and down direction

Other features and functions of the present invention will be clearly presented in the implementation manner with reference to the drawings, wherein: Fig. 1 is a side view, and illustrates a resistance device disclosed in the Republic of China New Patent Publication No. TWM549090U; Fig. 2 is a perspective view illustrating an embodiment of the novel exercise machine; Fig. 3 is an incomplete side view of this embodiment; Fig. 4 is an incomplete top view of this embodiment, illustrating the connection relationship between a transmission unit and a resistance device; Fig. 5 is an incomplete three-dimensional sectional view of this embodiment; Fig. 6 is a three-dimensional exploded view illustrating an axis unit and a braking unit of the resistance device; Fig. 7 is a three-dimensional exploded view of the resistance device; 8 is a partial perspective view illustrating a first blade unit of the resistance device in a first position relative to a second blade unit; Figure 9 is a view similar to Figure 8, illustrating the first blade unit in a second position relative to the second blade unit; Figure 10 is a cross-sectional view taken along the line X-X in Figure 4, illustrating the first blade unit in the first position; and Fig. 11 is a cross-sectional view similar to Fig. 10, illustrating the first blade unit in the second position.

5: Axis unit

50: Inner shaft space

51: fixed axis

511: shaft hole

512: Chute

52: Shaft

523: limit slot

6: The first blade unit

600: wind side

61: The first shaft sleeve

62: First base

63: First blade

631: The first part

632: first opening

7: The second blade unit

71: Second shaft sleeve

72:Second base

73: Second blade

731: The second part

732: second opening

8: Detent unit

81: Thrust bearing set

82: Pull block

83: link cable

84: connector

85: Elastic parts

X: axis

L2: left and right direction

L3: up and down direction

Claims (9)

A resistance device for an exercise machine, comprising: An axis unit, including a fixed shaft extending along an axis, and a shaft member rotatably arranged outside the fixed shaft; A first blade unit, arranged on the shaft and rotating around the axis along with the shaft, the first blade unit has a plurality of first blades that are angularly staggered from each other in the circumferential direction around the axis; A second fan blade unit is spaced apart from the first fan blade unit on the shaft and rotates around the axis with the shaft, the second fan blade unit has several angles in the circumferential direction around the axis Staggered second blades, the first blades and the second blades cooperate to form a plurality of wind-receiving surfaces; and a detent unit, used to drive the first fan blade unit to move along the axis relative to the second fan blade unit between a first position and a second position, the wind receiving surfaces of the first position The area is larger than the area of the wind receiving surfaces of the second position. The resistance device of the exercise machine as claimed in claim 1, wherein the first blade unit includes a first bushing movably arranged on the shaft, and a first bushing connected to the first bushing for the The first base on which the first blades are set, the second fan blade unit includes a second bushing fixed on the shaft, and a second base connected to the second bushing for the second blades to be set on seat, the detent unit is used to drive the first shaft sleeve to move. The resistance device of an exercise machine according to claim 2, wherein the fixed shaft has a shaft hole extending along the axis, and a chute perpendicular to the axis and connected to the shaft hole, and the braking unit includes a A thrust bearing set arranged between the fixed shaft and the shaft member, a pull block movably penetrated through the chute and connected to the thrust bearing set, a pull block inserted into the shaft hole and connected to the pull block A linking cable, and at least one connecting piece passing through the shaft from the first bushing and connected to the thrust bearing set, the linking cable can drive the traction block to push the thrust bearing set to link the first bushing move. The resistance device for a sports machine as claimed in claim 3, wherein the shaft center unit further includes several fixed bearings arranged between the fixed shaft and the shaft member, and the braking unit also includes a set of fixed bearings arranged on the fixed shaft And the two ends abut against the thrust bearing set and the elastic member of one of the fixed bearings respectively. The resistance device of an exercise machine as claimed in claim 3, wherein the braking unit includes several connecting parts, and the shaft has several limiting slots perpendicular to the axis and for the connecting parts to be movably arranged . The resistance device for a sports machine according to claim 1, wherein each first blade of the first blade unit has several first openings and several first slices, and each of the second blade unit The second blade has several second openings and several second pieces, when the first blade unit is in the first position, the first pieces cover at least a part of the second openings, the The second piece covers at least a part of the first openings, and when the first fan blade unit is in the second position, the first openings and the second openings completely overlap. The resistance device for a sports machine as claimed in claim 6, wherein each of the first blades also has at least one groove, and each of the second blades also has at least one protrusion that fits into the corresponding groove . An exercise machine comprising: a body; an operation unit, which is arranged on the body and operated by the user; and A resistance device as described in claim 1 is installed on the body and used to provide movement resistance to the operation unit. The exercise machine as described in claim 8, further comprising a transmission unit, the transmission unit includes a rotating wheel set rotatably arranged on the body, and a transmission belt wound around the rotating wheel set and the shaft, the An operating unit is connected to the rotating wheel set.

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