CN1986020B - Bicycle trainer - Google Patents

Abstract

A training device for bicycles, comprising a bracket supporting a wheel of the bicycle away from the ground, a resistance device, an induction group, and a driving part. The resistance device has a wheel seat pivotally arranged on the bracket, a resistance wheel contacting with the bicycle wheel, and a wheel shaft passing through the wheel seat and the resistance wheel. The induction group has a first induction element with a fixed distance from the wheel seat, and a second induction element that rotates synchronously with the wheel shaft and can be displaced relative to the first induction element along the wheel shaft. The first and second induction elements There is a magnetic attraction between the parts. The driving part pushes the second sensing part to narrow the distance from the first sensing part as the rotation speed of the wheel shaft increases.

Description

bicycle trainer

technical field

The patent of the present invention relates to a training device, in particular to a bicycle training device that can provide resistance.

Background technique

Referring to FIG. 1 and FIG. 2 , taking a general bicycle trainer 1 as an example, it mainly includes a bracket 11 and a resistance device 12 .

The bracket 11 supports a wheel 2 of the bicycle (not shown in the figure) away from the ground, so that the wheel 2 rotates in situ during the pedaling process. The resistance device 12 has a wheel base 121 arranged on the bracket 11, a resistance wheel 122 arranged between the wheel bases 121 and in contact with the bicycle wheel 2, passing through the wheel base 121 and the resistance wheel 122 along an axial direction. Wheel shaft 123, an induction element 124 fixed on one side of the wheel shaft 123 and positioned on one side of the wheel seat 121, and a digital sensor 124 fixed on one side of the wheel seat 121 and equidistantly distributed around the induction element 124 Magnetic body 125.

Since the bicycle wheel 2 is against the resistance wheel 122, when the wheel 2 rotates, it will drive the resistance wheel 122 to rotate, so that the induction element 124 coaxial with the resistance wheel 122 rotates synchronously, and During the rotation process, the magnetic force of the magnetic bodies 125 produces a blocking effect. Therefore, the rider must apply force to step on the wheel 2 to make the wheel 2 rotate, thereby achieving the effect of movement.

However, the distance between the magnetic bodies 125 and the inductive element 124 will affect the size of the reluctance. Therefore, when the distance between the magnetic bodies 125 and the inductive element 124 is fixed, the magnetic resistance that can be produced will not change. However, when the bicycle wheel 2 is initially started, it usually needs to consume a relatively large pedaling force. As the rotation speed of the wheel 2 increases, part of the resistance will be overcome due to the effects of inertia and centrifugal force, and the pedaling action will become relatively large. Effortless, at this time, the exercise effect will be greatly reduced.

Contents of the invention

Therefore, the purpose of the patent of the present invention is to provide a bicycle trainer that can change the size of the resistance.

The bicycle training device of the patent of the present invention comprises a bracket, a resistance device, an induction group, and a driving part. The support supports a wheel of the bicycle away from the ground. The resistance device has a wheel seat pivoted on the bracket and capable of displacement relative to the bicycle wheel, a resistance wheel pivoted on the wheel seat and in contact with the bicycle wheel, and passes through the wheel seat and the bicycle wheel along an axis direction. The wheel axle of the resistance wheel. The induction group has a first induction element which is spaced at a fixed distance from the wheel base along the axial direction, and a second induction element which rotates synchronously with the axle and can be displaced relative to the first induction element along the axle. , A magnetic attraction force is generated between the second induction parts. The driving part pushes the second sensing part to narrow the distance from the first sensing part as the rotation speed of the wheel shaft increases.

The effect of the patent of the present invention is that the retarding force can be increased with the increase of the rotation speed, so that the rider can indeed achieve the exercise effect.

Description of drawings

The foregoing and its technical content, features and effects of the patent of the present invention will be clearly presented in the following detailed description of one of the preferred embodiments with reference to the drawings.

Fig. 1 is a perspective view illustrating a general bicycle trainer;

Fig. 2 is a sectional view, illustrates the situation that aforementioned trainer produces resistance;

Fig. 3 is a side view, illustrating the first preferred embodiment of the patent of the present invention-a bicycle trainer;

Fig. 4 is a front view illustrating a support, a resistance device, a second sensing element and a driving element in the first preferred embodiment;

Fig. 5 is a front view illustrating a support, a resistance device, a second sensing element and a driving element in the first preferred embodiment;

Fig. 6 is a bottom view illustrating the positional relationship between the drive member, two flyweights and two slide bars in the first preferred embodiment;

Fig. 7 is a cross-sectional view illustrating that a second sensing element and a first sensing element have a larger distance in the first preferred embodiment;

FIG. 8 is a cross-sectional view illustrating that the distance between the second sensing element and the first sensing element is reduced in the first preferred embodiment;

Fig. 9 is a sectional view illustrating a second preferred embodiment of a bicycle training device of the patent of the present invention;

Fig. 10 is a sectional view illustrating the third preferred embodiment of the patent of the present invention-a bicycle trainer;

Fig. 11 is an exploded view illustrating a fourth preferred embodiment of a bicycle trainer of the patent of the present invention;

Fig. 12 is a sectional view illustrating the combination of the fourth preferred embodiment.

Detailed ways

Referring to FIG. 3 and FIG. 4 , the preferred embodiment of the patented bicycle trainer of the present invention includes a bracket 3 , a resistance device 4 , an induction group 5 and a driving member 6 .

The bracket 3 supports a wheel 7 of the bicycle (not shown) away from the ground.

The resistance device 4 has a wheel seat 41 which is pivotally arranged on the bracket 3 and can be displaced relative to the wheel 7, a resistance wheel 42 which is in contact with the bicycle wheel 7, and runs through the wheel seat 41 and the resistance wheel along an axis X direction. Wheel axle 43 of wheel 42. The wheel shaft 43 has a protruding section 431 protruding from one side of the wheel seat 41 .

The induction group 5 has a hollow shell seat 51 fixed on one side of the wheel base 41 along the axis X direction and allowing the passage section 431 of the wheel shaft 43 to pass through, fixed on the side of the shell seat 51 and connected to the The wheel seat 41 is separated by a first sensing element 52 at a fixed distance, a second sensing element 53 nested in the passing section 431 of the wheel shaft 43, and a second sensing element 53 nested in the passing portion 431 of the wheel shaft 43 and abutting against one end of the wheel shaft 43 respectively. An elastic component 54 connected with the second sensing element 53 . The first inductive element 52 is a magnetic body in this embodiment, and an additional magnetic body can also be installed to make the first inductive element 52 generate a magnetic field. In this embodiment, the second sensing element 53 is made of a magnetically permeable metal material, and has a distance from the first sensing element 52 . When the elastic component 54 is in an elastic state, it will drive the second sensing element 53 to move away from the first sensing element 52 .

Referring to Fig. 4 and Fig. 5, the driving member 6 has a shaft seat 61 fixed on the passing section 431 of the wheel shaft 43 and located between the side of the wheel seat 41 and the second induction member 53, displaceably passing through the shaft Seat 41 and two sliding rods 62 solidified with the second sensing element 53, and counting flyweight 63. The shaft seat 61 has a shaft hole 611 through which the second sensing element 53 partially passes through along the axial direction X, and a ring protrusion formed in the shaft hole 611 and which can block the second sensing element 53 612, and two side holes 613 formed on a peripheral surface and communicating with the shaft hole 611. The sliding rods 62 respectively have a bolt head 621 that stops on the shaft seat 61 . 6 and 7, the flyweights 63 are respectively pivotally arranged in the side holes 613, and have a pushing end 631 formed at one end and in contact with the second sensing element 53, and a pushing end 631 formed at the other end. One throws and throws the end 632.

Referring to Fig. 3 and Fig. 4, when the bicycle wheel 7 initially rotates, it will drive the resistance wheel 42 to rotate. Referring to Fig. 5 and Fig. 7, the shaft seat 61 coaxial with the resistance wheel 42 passes through the slide bars 62 Synchronously drive the second induction part 53 to rotate, and in the process of rotation, affected by the magnetic force of the first induction part 52, a blocking effect is produced. 7 rotate, thereby, reach motion effect.

Referring to Fig. 7 and Fig. 8, as the speed of the bicycle wheel 7 becomes faster, the throwing ends 632 of the flyweights 63 will be thrown outwards with the centrifugal force due to inertia and centrifugal force. The pushing end 631 of the hammer 63 will relatively squeeze the second sensing element 53, so that the second sensing element 53 overcomes the elastic force of the elastic component 52, and drives the sliding bars 62 to move toward the first sensing element 52 along the axle 43. , and narrow the distance between the second sensing element 53 and the first sensing element 52 until the sliding rods 62 (refer to FIG. 5 ) abut against the shaft seat 61 with the bolt head 621 (refer to FIG. 5 ), when the centrifugal force gets stronger The larger the distance D between the second sensing element 53 and the first sensing element 52, the smaller the magnetic resistance, and the smaller the centrifugal force, the smaller the distance D between the second sensing element 53 and the first sensing element 52. Just bigger, magnetic resistance is also just smaller, thereby, according to the rotating speed of this wheel 7, automatically adjusts the size of resistance.

It is worth mentioning that the second inductive element 53 of the second inductive element 5 can also be a magnetic body, and the first inductive element 52 cooperates with the second inductive element 53 to be made of a magnetically permeable metal material . Thereby, the distance between the second sensing element 53 and the first sensing element 52 can also be automatically adjusted to generate magnetic attraction forces with different strengths and different blocking effects.

Referring to Fig. 9, it is the second preferred embodiment of the patent of the present invention, which is roughly the same as the first preferred embodiment, except that:

The first sensing element 52 is sleeved on the exit section 431 of the rotating shaft 43 and adjacent to the wheel base 41 . The second sensing element 53 and the shaft seat 61 are displaceably sleeved on the exit section 431 of the rotating shaft 43 along the axis X direction and away from the wheel seat 41 .

When the speed of the bicycle wheel 7 becomes faster, the throwing ends 632 of the flyweights 63 will be thrown outwards with the centrifugal force due to the penetration and centrifugal force, and the pushing ends 631 will squeeze the second wheel. The sensing element 53 is displaced toward the first sensing element 52 to reduce the distance between the second sensing element 53 and the first sensing element 52 , thereby automatically adjusting the resistance according to the rotation speed of the wheel 7 .

Referring to Fig. 10, it is the third preferred embodiment of the patent of the present invention, which is roughly the same as the first preferred embodiment, except that:

The second sensing element 53 has several first recesses 531 formed on one side, and the first recesses 531 are adjacent to the axis X and extend along the radial direction.

The driving member 6 further has a number of rollers 64 . And the shaft seat 61 is matched with the second induction element 52, and has several second recesses 614 formed on one side, and the second recesses 614 are respectively corresponding to the first recesses 531, and are formed by the first recesses 531 respectively. The axis X defines a gap 615 that decreases from large to small along the radial direction. The rollers 64 are respectively accommodated in the gaps 615 .

When the rotation speed of the bicycle wheel 7 becomes faster, the rollers 64 will be thrown outwards along the gaps 615 due to the effects of consistency and centrifugal force, and push the second sensor as the gaps 615 shrink. The member 53 is displaced relative to the first sensing member 52, whereby the resistance is automatically adjusted according to the rotation speed of the wheel 7.

Referring to Fig. 11 and Fig. 12, it is the third preferred embodiment of the patent of the present invention, which is roughly the same as the first preferred embodiment, except that:

The induction group 5 has a hollow shell seat 55 which is fixed on one side of the wheel base 41 along the axis X direction and allows the passing section 431 of the wheel shaft 43 to pass through. A first sensing element 56 of the wheel seat 41, a second sensing element 57 disposed on the exit section 431 of the rotating shaft 43 and away from the wheel seat 41 is displaceably disposed in the direction of the axis X, and disposed on the rotating shaft 43 passes through an elastic component 58 of section 431 . The second sensing element 57 has a ring wall 571 formed on one side and surrounding the axis X, and a slanted groove 572 passing through the ring wall 571 . In this embodiment, the elastic component 58 is a torsion spring, which is respectively connected to the side of the housing base 55 away from the wheel base 41 and the second sensing element 57 .

The driving member 6 has a guide seat 65 fixed on one side of the shell seat 55 and away from the wheel seat 41, and a guide seat 65 that passes through the chute 572 of the second induction member 57 and penetrates the guide seat 65. Rod 66.

When the rotation speed of the bicycle wheel 7 becomes faster, it will synchronously drive the first induction part 56 to rotate at a high speed. At this time, the magnetic attraction between the first and second induction parts 56, 57 will become stronger, so that the second induction part 57 is affected by the magnetic attraction force and overcomes the elastic force of the elastic component 58 during the rotation of the first sensing part 56, and the inclined groove 572 moves along the guide rod 66 to move toward the first sensing part 56 synchronously when rotating. displacement. When the rotation speed of the bicycle wheel 7 slows down, the elastic component 58 will use its elastic restoring force to reversely twist the second induction member 57 so that the chute 572 will rotate along the guide rod 66 and move away from the first synchronously. An induction part 56, thereby, according to the rotation speed of the wheel 7, the size of the resistance is automatically adjusted.

According to the above, the bicycle trainer of the patent of the present invention has the following advantages and effects:

The patent of the present invention can automatically adjust the size of the resistance depending on the rotational speed of the wheel 7 during exercise, so that the rider can indeed achieve a better exercise effect by stepping on it, and can improve the practicability of the patent of the present invention.

The above is only a preferred embodiment of the patent of the present invention, and can not limit the implementation scope of the patent of the present invention, that is, the simple equivalent changes and Modifications still fall within the scope covered by the patent of the present invention.

Claims (6)

1. A bicycle trainer, characterized by comprising: a stand for supporting a wheel of the bicycle away from the ground; A resistance device, having a wheel seat pivoted on the bracket and capable of displacement relative to the bicycle wheel, a resistance wheel pivoted on the wheel seat and in contact with the bicycle wheel, and passing through the wheel seat along an axis and the axle of the resistance wheel; An induction group has a first induction element which is at a fixed distance from the wheel base along the axial direction, and a second induction element which rotates synchronously with the wheel shaft and can be displaced relative to the first induction element along the wheel shaft. 1. The second inductive element has magnetic attraction force, and an elastic component set on the axle, the elastic component can push the second inductive element to move away from the first inductive element with elastic force ;and A driving part has a shaft seat fixed on the wheel shaft and several flyweights. The shaft seat has a shaft hole penetrating along the axis direction and partially pierced by the second induction part, and is formed on a circle face and communicate with several side holes of the shaft hole, the flyweights are respectively pivoted in the side holes, and have a pushing end formed at one end and in contact with the second sensing element, and a push end formed at the other end. A throwing end, the throwing end is thrown upwards with the increase of the rotation speed of the wheel shaft, so that the pushing end relatively presses the second sensing part downward to narrow the distance from the first sensing part. 2 . The bicycle training device according to claim 1 , wherein the first induction element generates a magnetic field, and the second induction element is a magnetically conductive metal material. 3. A bicycle trainer, characterized by comprising: a stand for supporting a wheel of the bicycle away from the ground; A resistance device, having a wheel seat pivoted on the bracket and capable of displacement relative to the bicycle wheel, a resistance wheel pivoted on the wheel seat and in contact with the bicycle wheel, and passing through the wheel seat along an axis and the axle of the resistance wheel; An induction group has a first induction element which is at a fixed distance from the wheel seat along the axial direction, and a second induction element which rotates synchronously with the wheel shaft and can be displaced relative to the first induction element along the wheel shaft, wherein the The second inductive element further has several first recesses formed on one side, the first recess is adjacent to the axis and extends along the radial direction, the first and second inductive elements generate magnetic attraction, and are set on the axle An elastic component on the top, the elastic component can push the second sensing part to move away from the first sensing part with elastic force; and A driving part has a shaft seat fixed on the wheel shaft and matched with the second induction part, and several rollers. A shaft hole, and the second recesses formed on one side, the second recesses are respectively corresponding to the first recesses, and respectively define a gap from large to small by the axis along the radial direction, the roller The column is accommodated in the gap, and is thrown away from the axis along the gap by the centrifugal force, so that the roller pushes the second sensing part to displace relative to the first sensing part due to the tapering of the gap. 4. The bicycle training device according to claim 3, wherein the driving member further has a sliding rod that displaceably passes through the shaft seat, and the sliding rod is fixed with the second induction member, and respectively There is a bolt head which passes through the shaft seat and can abut against the shaft seat to limit the displacement stroke of the second induction element. 5. The bicycle training device according to claim 1, characterized in that, the induction group further has a hollow shell seat fixed on one side of the shaft seat along the axial direction, and the first and second induction The component and the driving component are accommodated in the shell seat. 6. The bicycle training device according to claim 5, wherein the second induction part of the induction group has a ring wall formed on one side and surrounding the axis, and a chute penetrating the ring wall, The driving part has a guide seat fixed on one side of the housing seat and away from the wheel base, and a guide rod that passes through the chute and penetrates the guide seat, so that the second induction part is positioned at the first During the rotation process of the sensing element, affected by the magnetic attraction force, the chute is displaced along the guide rod toward the first sensing element. the

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