FITNESS BIKE WITH A BRAKING DEVICE

Description

1. Field of the Invention

[0001] The present invention relates to a fitness bike with a braking device that has a simplified structure and is easy to install.

2. Description of the Prior Arts

[0002] A fitness bike is an indoor sports device. The fitness bike may be operated anytime without limitations by the surroundings and the weather. The structure and the operation of the fitness bike are similar to those of a real bike. A difference between the fitness bike and the real bike is that the fitness bike works without change of location. The resistance of the fitness bike is adjustable to simulate the riding of the real bike. The exercise intensity is adjusted by controlling the treading speed and the resistance. Thus, the cardiopulmonary function and the metabolism of the user are improved. However, the fitness bike does not have an independent braking device. The fitness bike increases the resistance that produces a friction on a flywheel of the excise bike. The rotation of the flywheel slows down gradually until stop. However, the rotation of the flywheel may cause an accident. Therefore, the fitness bike needs an improvement on the braking.

[0003] Thus, a conventional excise bike has been developed and has a frame, a braking device, and a flywheel. The braking device has a fixed member that is mounted on the frame. A rotating axle is mounted in the bottom of the fixed member. A braking handle is connected to the rotating axle to drive the rotating axle. A pair of clamping plates is connected to the braking handle, and is movably mounted on two side surfaces of the flywheel. Two braking pads are respectively mounted on the inner surfaces of the clamping plates. The pair of the clamping plates that approaches the flywheel is controlled by the braking handle. Thus, the braking pads laterally abut the flywheel and make the flywheel stop. However, the conventional fitness bike has a complicated structure and installation thereof is inconvenient.

[0004] For example, in European Patent Application 2471580 A1, a brake device (1) for an exercise bicycle (60) is provided. The brake device (1) has a main tube (10), a resilient assembly (20) and a driving assembly (40) mounted axially in the main tube (10), an end cap (30) mounted on an open end of the main tube (10), and a button (50) attached to the driving assembly (40). The resilient assembly (20) has a first resilient element (23) and a second resilient element (24) having a second coefficient of elasticity less than a first coefficient of elasticity of the first resilient element (23). The driving assembly (40) presses against the first resilient element (23) and is able to obviously and quickly adjust a pressure of the resilient element (23). The second resilient element (24) quickly pushes the resilient assembly (20) back and a resistance force applied to a wheel (64) of the exercise bicycle (60) is released.

[0005] An objective of the present invention is to provide a fitness bike with a braking device that has a simplified structure and is easy to install.

[0006] The problem posed is solved according to the invention by the technical features of claim 1.

[0007] To achieve the foregoing objective, the fitness bike with a braking device has a frame, a flywheel, an adjusting assembly, a braking assembly, and a wire. The flywheel is rotatably mounted on the frame. The adjusting assembly is mounted on the frame, and has a main housing, a shaft, and a first resilient member. The main housing is mounted on the frame. The shaft is movably mounted in the main housing. The first resilient member is located in the main housing, receives the shaft and abuts the shaft. The braking assembly is rotatably mounted on the frame, is located next to the flywheel, and has an abutting element. The abutting element is located next to the flywheel, and is capable of abutting a radial outer surface of the flywheel. The wire is mounted on the frame and is connected to the adjusting assembly. One of two ends of the wire is mounted on the shaft, which is mounted in the main housing. The other end of the wire is mounted on the braking assembly. Precisely, the adjusting assembly further has a fine-tuning member located in the main housing, connected to the wire, and having an inner thread formed in the fine-tuning member; the shaft has a button located outside the main housing and an outer thread formed on an outer surface of the shaft engaged with the inner thread of the fine-tuning member. When the button is rotated, the shaft is rotated thereby the fine-tuning member moves along the outer thread of the shaft.

[0008] Other objectives, advantages and features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

In the drawings:

[0009] 

Fig. 1 is a perspective view of a braking device for a fitness bike that is mounted in a frame in accordance with the present invention;

Fig. 2 is an exploded perspective view of the braking device in Fig. 1;

Fig. 3 is a partial side view of the braking device in Fig. 1, showing that the braking device is in an initial position;

Fig. 4 is another partial side view of the braking device in Fig. 1, showering that the braking device is operated; and

Fig. 5 is an enlarged partial side view of the braking device in Fig. 1.

[0010] With reference to Figs. 1 and 3, a fitness bike with a braking device in accordance with the present invention has an adjusting assembly 10, a braking assembly 20, a wire 30, an abutting element, a frame 40, and a flywheel 50.

[0011] The flywheel 50 is rotatably mounted on the frame 40. The flywheel 50 may have a magnetic part.

[0012] With reference to Figs. 1 to 3, the adjusting assembly 10 is mounted on the frame 40, and has a main housing 11, a tube 12, a shaft 13, a first resilient member 14, a fine-tuning member 15, and a pulley 16.

[0013] The main housing 11 is mounted on the frame 40 and has an inner space.

[0014] The tube 12 is mounted in the main housing 11, extends out of the main housing 11, and has an upper cap 121 and a lower cap 122.

[0015] The upper cap 121 is mounted on a top end of the tube 12.

[0016] The lower cap 122 is mounted on a bottom end of the tube 12.

[0017] The shaft 13 is movably mounted in the main housing 11 and the tube 12. Specifically, the shaft 13 is mounted through the upper cap 121 and the lower cap 122, and has a button 131, an outer thread 132, an abutting shoulder 133, a washer 134, an annular groove 135, and a retainer 136.

[0018] The button 131 is mounted on the shaft 13 and is located outside the main housing 11.

[0019] The outer thread 132 is formed on an outer surface of the shaft 13. Specifically, the outer thread 132 is located in a bottom end of the shaft 13.

[0020] The abutting shoulder 133 is formed in the shaft 13 and is located in the tube 12.

[0021] The washer 134 is mounted in the abutting shoulder 133.

[0022] The annular groove 135 is annularly defined on the outer surface of the shaft 13, is located in a top end of the shaft 13, and is located outside the tube 12.

[0023] The retainer 136 may be a C-clip and is mounted in the annular groove 135.

[0024] With reference to Fig. 5, the washer 134 is capable of abutting an upper surface of the upper cap 121. The retainer 136 is capable of abutting a bottom surface of the lower cap 122. Thus, the washer 134 and the retainer 136 limit the tube 12.

[0025] With reference to Figs. 2, 3 and 5, the first resilient member 14 is located in the main housing 11 and receives the shaft 13. The first resilient member 14 is mounted inside the tube 12. A top end of the first resilient member 14 abuts the washer 134 of the shaft 13. A bottom end of the first resilient member 14 abuts the lower cap 122 of the tube 12. The first resilient member 14 abuts and presses the shaft 13 towards an initial position. Specifically, the first resilient member 14 is a spring.

[0026] The fine-tuning member 15 has an inner thread, and is located in the main housing 11. The inner thread is formed in the fine-tuning member 15, and engages with the outer thread 132 of the shaft 13.

[0027] The pulley 16 is rotatably mounted in the main housing 11.

[0028] With reference to Figs. 1 to 3, the braking assembly 20 is rotatably mounted on the frame 40, is located next to the flywheel 50, and has an axle 21, a linking member 22, an abutting element, a second resilient member 24, and multiple brake pads 25.

[0029] The axle 21 is mounted through the frame 40.

[0030] The linking member 22 is mounted pivotally on the axle 21, and has a pivoting member 221 and two plates 222.

[0031] The pivoting member 221 is rotatably mounted on the axle 21.

[0032] The two plates 222 are spaced apart at an interval, are rotatably mounted on the axle 21, and are connected to the pivoting member 221.

[0033] The abutting element is mounted in the linking member 22, and rotates with the linking member 22. The abutting element is located next to the flywheel 50, and is capable of abutting a radial outer surface of the flywheel 50.

[0034] The abutting element may be a permanent magnet. When the abutting element approaches the flywheel 50, the abutting element attracts the magnetic part of the flywheel 50. Thus, the present invention executes braking.

[0035] Specifically, the abutting element may have two sets of multiple abutting stubs 23. The two sets of the abutting stubs 23 are mounted respectively on the two plates 222 of the linking member 22 and the abutting stubs 23 of each set are spaced apart at intervals. The abutting stubs 23 are capable of abutting the flywheel 50. Upward pivoting the linking member 22 drives the abutting stubs 23 to abut the flywheel 50. Otherwise, the abutting stubs 23 may be multiple short sticks, which are mounted between the two plates 222 and are spaced apart at intervals.

[0036] The second resilient member 24 may be a torsion spring, is mounted on the axle 21, and abuts the linking member 22 to depart from the flywheel 50.

[0037] Each of the brake pads 25 is annular and is respectively mounted on an outer surface of the abutting stub 23. Therefore, the brake pad 25 abuts the radial outer surface of the flywheel 50. Each of the brake pads 25 may be wool felt, a leather pad, or a rubber mat.

[0038] With reference to Figs. 1, 2, and 5, the wire 30 is mounted on the frame 40, and is connected to the adjusting assembly 10 and the braking assembly 20. One of two ends of the wire 30 is mounted on the fine-tuning member 15 of the adjusting assembly 10. The other end of the wire 30 is mounted on the linking member 22 of the braking assembly 20. The wire 30 is mounted on the pulley 16 for shifting the moving direction of the wire 30 to upwards or downwards.

[0039] When the button 131 is pressed, the shaft 13 is moved downwards. The shaft 13 makes the fine-tuning member 15 pulls the wire 30 downwards. Meanwhile, the wire 30 makes the linking member 22 of the braking assembly 20 rotate towards the flywheel 50.

[0040] With reference to Figs. 1, 3, and 4, when the button 131 of the shaft 13 is pressed, the shaft 13 and the fine-tuning member 15 move downwards to drive the wire 30. The wire 30 moves downwards along the pulley 16 and drives the braking assembly 20 to rotate. Thus, the abutting element of the braking assembly abuts the flywheel 50 for braking in time. Moreover, when the button 131 is rotated, the shaft 13 is rotated, too. Then, the fine-tuning member 15 moves along the outer thread 132. When the fine-tuning member 15 moves, the fine-tuning member 15 pulls or releases the wire 30 gradually. Thus, the abutting element of the braking assembly 20 approaches or departs from the flywheel 50. Then the brake of the present invention is finely adjusted. The braking assembly of the conventional excise bike has two clamping plates moving in two opposite directions to laterally clamp two side surfaces of the flywheel. Because only one abutting element of the present invention radially abuts the outer surface of the flywheel 50, the braking assembly 20 abuts and limits the flywheel 50 in one single direction. Thus, the present invention has a simplified structure and is easy to install.

[0041] In another embodiment, the present invention may not have the pulley 16. Thus, the shaft 13 is laterally and movably mounted through the main housing 11. When the shaft 13 is laterally pushed, the wire 30 is still pulled to dive the braking assembly 20 for braking.

[0042] Moreover, the shaft 13 is movably mounted through the main housing 11. When the shaft 13 is pulled upwards, the braking assembly 20 is driven for braking. Thus, the present invention may execute braking without the pulley 16.

Claims

1. A fitness bike with a braking device comprises:

a frame (40);

a flywheel (50) rotatably mounted on the frame (40);

an adjusting assembly (10) mounted on the frame (40), and having

a main housing (11) mounted on the frame (40);

a shaft (13) movably mounted in the main housing (11);

a button (131) mounted on the shaft (13) and located outside the main housing (11); and

a first resilient member (14) located in the main housing (11), receiving the shaft (13), and abutting the shaft(13);

a braking assembly (20) rotatably mounted on the frame (40), located next to the flywheel (50), and having
an abutting element located next to the flywheel (50), and being capable of abutting a radial outer surface of the flywheel (50); and

a wire (30) mounted on the frame (40) and connecting the braking assembly (20) to the adjusting assembly (10), wherein one of two ends of the wire (30) is mounted on the shaft (13), and the other end of the wire (30) is mounted on the braking assembly (20):

the fitness bike with a braking device characterized in that:

the adjusting assembly (10) further comprising a fine-tuning member (15) located in the main housing (11), connected to the wire (30), and having an inner thread formed in the fine-tuning member (15); wherein

the shaft (13) is provided with an outer thread (132) formed on an outer surface of the shaft (13) and engaged with the inner thread of the fine-tuning member (15);

wherein when the button (131) is rotated, the shaft (13) is rotated and thereby the fine-tuning member (15) moves along the outer thread of the shaft (13) thereby pulling or releasing the wire (30) gradually.

2. The fitness bike with a braking device as claimed in claim 1, wherein
the adjusting assembly (10) further has
a pulley (16) rotatably mounted in the main housing (11) and mounted in the wire (30).

3. The fitness bike with a braking device as claimed in claim 1, wherein
the adjusting assembly (10) further has
a tube (12) mounted in the main housing (11) and extending out of the main housing (11);
the shaft (13) is mounted in the tube (12), and having

an abutting shoulder (133) formed in the shaft (13) and located in the tube (12);

a washer (134) mounted in the abutting shoulder (133); and

the washer (134) mounted in the tube (12), wherein one of two ends of the first resilient member (14) abuts the washer (134), and the other end of the first resilient member (14) abuts a bottom end of the tube (12).

4. The fitness bike with a braking device as claimed in claim 3, wherein
the shaft (13) has

an annular groove (135) annularly defined on the outer surface of the shaft (13) and located outside the tube (12); and

a retainer (136) mounted in the annular groove (135), abutted by the fine-tuning member (15), and being capable of abutting the bottom end of the tube (12).

5. The fitness bike with a braking device as claimed in any one of claims 1 to 4, wherein
the abutting element has
multiple abutting stubs (23) spaced apart at intervals, and being capable of abutting the flywheel (50).

6. The fitness bike with a braking device as claimed in any one of claims 1 to 5, wherein
the abutting element is a permanent magnet.

7. The fitness bike with a braking device as claimed in any one of claims 1 to 6, wherein
the braking assembly (20) has

a linking member (22) pivotally mounted on the frame (40) and the abutting element, and mounted on the other end of the wire (30); and

a second resilient member (24) abutting the linking member (22).

8. The fitness bike with a braking device as claimed in any one of claims 1 to 7, wherein
the braking assembly (20) has multiple brake pads (25) mounted on an outer surface of the abutting element.

9. The fitness bike with a braking device as claimed in claim 8, wherein
each of the brake pads (25) is wool felt, a leather pad, or a rubber mat.

Ansprüche

1. Fitnessfahrrad mit einer Bremsvorrichtung, umfassend:

ein Gestell (40);

ein Schwungrad (50), das drehbar auf dem Gestell (40) angebracht ist;

eine Einstellbaugruppe (10), die auf dem Gestell (40) angebracht ist, und die ein Hauptgehäuse (11) aufweist, das auf dem Gestell (40) angebracht ist;

eine Welle (13), die beweglich in dem Hauptgehäuse (11) angebracht ist;

einen Knopf (131), der auf der Welle (13) angebracht ist und sich außerhalb des Hauptgehäuses (11) befindet;

ein elastisches Teil (14), das sich in dem Hauptgehäuse (11) befindet, die Welle (13) aufnimmt und an der Welle (13) anliegt;

eine Bremsbaugruppe (20), die drehbar auf dem Gestell (40) angebracht ist, sich neben dem Schwungrad (50) befindet und ein anliegendes Element, das sich neben dem Schwungrad (501) befindet, aufweist und dazu fähig ist, an einer radialen äußeren Fläche des Schwungrades (50) anzuliegen; und einen Draht (30), der auf dem Gestell (40) angebracht ist und die Bremsbaugruppe (20) mit der Einstellbaugruppe (10) verbindet,

wobei eines der zwei Enden des Drahts (30) auf der Welle (13) angebracht ist, und das andere Ende des Drahts (30) auf der Bremsbaugruppe (20) angebracht ist:
wobei das Fitnessfahrrad dadurch gekennzeichnet ist, dass:

die Einstellbaugruppe (10) ferner ein Feinabstimmungsteil (15) umfasst, das sich in dem Hauptgehäuse (11) befindet, mit dem Draht (30) verbunden ist und ein inneres Gewinde aufweist, das in dem Feinabstimmungsteil (15) ausgebildet ist;

wobei die Welle (13) mit einem äußeren Gewinde (132) versehen ist, das an einer äußeren Oberfläche der Welle (13) ausgebildet ist und mit dem inneren Gewinde des Feinabstimmungsteils (15) in Eingriff steht;

wobei, wenn der Knopf (131) gedreht wird, die Welle (13) gedreht wird, wodurch das Feinabstimmungsteil (15) sich entlang des äußeren Gewindes der Welle (13) bewegt, wodurch es den Draht (30) allmählich zieht oder löst.

2. Fitnessfahrrad mit einer Bremsvorrichtung nach Anspruch 1, wobei die Einstellbaugruppe (10) ferner eine Riemenscheibe (16) aufweist, die in dem Hauptgehäuse (11) angebracht und in dem Draht (30) angebracht ist.

3. Fitnessfahrrad mit einer Bremsvorrichtung nach Anspruch 1, wobei die Einstellbaugruppe (10) ferner einen Schlauch (12) aufweist, der in dem Hauptgehäuse (11) angebracht ist und sich aus dem Hauptgehäuse (11) erstreckt;
die Welle (13) in dem Schlauch (12) angebracht ist und eine anliegende Schulter (133) aufweist, die in der Welle (13) ausgebildet ist und sich in dem Schlauch (12) befindet;
einen Dichtungsring (134), der in der anliegenden Schulter (133) angebracht ist; und
die Welle (134) in dem Schlauch (12) angebracht ist, wobei eines der zwei Enden des ersten elastischen Teils (14) an dem Dichtungsring (134) anliegt, und das andere Ende des ersten elastischen Teils (14) an einem unteren Ende des Schlauchs (12) anliegt.

4. Fitnessfahrrad mit einer Bremsvorrichtung nach Anspruch 3, wobei die Welle (13) eine ringförmige Nut (135), die ringförmig an der äußeren Oberfläche der Welle (13) definiert ist und sich außerhalb des Schlauchs (12) befindet; und
einen Halter (136), der in der ringförmigen Nut (135) angebracht ist, an dem Feinabstimmungsteil (15) anliegt und dazu fähig ist, an dem unteren Ende des Schlauchs (12) anzuliegen, aufweist.

5. Fitnessfahrrad mit einer Bremsvorrichtung nach einem der Ansprüche 1 bis 4, wobei das anliegende Element mehrere anliegende Stutzen (23), die in Intervallen beabstandet sind, aufweist und dazu fähig ist, an dem Schwungrad (50) anzuliegen.

6. Fitnessfahrrad mit einer Bremsvorrichtung nach einem der Ansprüche 1 bis 5, wobei das anliegende Element ein Permanentmagnet ist.

7. Fitnessfahrrad mit einer Bremsvorrichtung nach einem der Ansprüche 1 bis 6, wobei die Bremsbaugruppe (20)
ein Verbindungsteil (22), das schwenkbar auf dem Gestell (40) und dem anliegenden Element angebracht ist und an dem anderen Ende des Drahts (30) angebracht ist; und
ein zweites elastisches Teil (24), das an dem Verbindungsteil (22) anliegt,
aufweist.

8. Fitnessfahrrad mit einer Bremsvorrichtung nach einem der Ansprüche 1 bis 7, wobei die Bremsbaugruppe (20) mehrere Bremsbeläge (25) aufweist, die an einer äußeren Oberfläche des anliegenden Elements angebracht ist.

9. Fitnessfahrrad mit einer Bremsvorrichtung nach Anspruch 8, wobei jeder der Bremsbeläge (25) Wollfilz, ein Lederbelag oder eine Gummimatte ist.

Revendications

1. Vélo d'appartement pourvu d'un dispositif de freinage, comprenant :

un cadre (40) ;

une roue d'inertie (50) montée de manière rotative sur le cadre (40) ;

un dispositif de réglage (10) monté sur le cadre (40), et comportant

un boîtier principal (11) monté sur le cadre (40) ;

un arbre (13) monté de manière mobile dans le boîtier principal (11) ;

un bouton (131) monté sur l'arbre (13) et disposé à l'extérieur du boîtier principal (11) ;

un premier élément élastique (14) disposé dans le boîtier principal (11), recevant l'arbre (13) et venant en butée contre l'arbre (13) ;

un dispositif de freinage (20) monté de manière pivotante sur le cadre (40), disposé à proximité de la roue d'inertie (50), et présentant

un élément de butée disposé à proximité de la roue d'inertie (50), et apte à venir en butée contre une surface radiale extérieure de la roue d'inertie (50) ; et un câble (30) monté sur le cadre (40) et reliant le dispositif de freinage (20) au dispositif de réglage (10), une des deux extrémités du câble (30) étant montée sur l'arbre (13), et l'autre extrémité du câble (30) étant montée sur le dispositif de freinage (20) :
ledit vélo d'appartement pourvu d'un dispositif de freinage étant caractérisé en ce que :

le dispositif de réglage (10) comprend en outre

un élément de réglage de précision (15) disposé dans le boîtier principal (11), relié au câble (30), un filet femelle étant formé dans ledit élément de réglage de précision (15) ;

l'arbre (13) présentant un filet mâle (132) formé sur une surface extérieure de l'arbre (13) et en prise avec le filet femelle de l'élément de réglage de précision (15) ;

où, en cas de rotation du bouton (131), l'arbre (13) tourne et l'élément de réglage de précision (15) se déplace en conséquence le long du filet mâle de l'arbre (13) en tirant ou en relâchant progressivement le câble (30).

2. Vélo d'appartement pourvu d'un dispositif de freinage selon la revendication 1, où le dispositif de réglage (10) comprend en outre une poulie (16) montée de manière rotative dans le boîtier principal (11) et montée dans le câble (30).

3. Vélo d'appartement pourvu d'un dispositif de freinage selon la revendication 1, où le dispositif de réglage (10) comprend en outre
un tube (12) monté dans le boîtier principal (11) et s'étendant hors du boîtier principal (11) ;
l'arbre (13) étant monté dans le tube (12), et présentant
un épaulement de butée (133) formé sur l'arbre (13) et logé dans le tube (12) ;
une rondelle (134) montée sur l'épaulement de butée (133) ; et
la rondelle (134) étant montée dans le tube (12), une des deux extrémités du premier élément élastique (14) butant contre la rondelle (134), et l'autre extrémité du premier élément élastique (14) butant contre une extrémité inférieure du tube (12).

4. Vélo d'appartement pourvu d'un dispositif de freinage selon la revendication 3, où l'arbre (13) présente
une rainure annulaire (135) définie sur la surface extérieure de l'arbre (13) et ménagée à l'extérieur du tube (12) ; et
un circlip de retenue (136) monté dans la rainure annulaire (135), venant en butée contre l'élément de réglage de précision (15), et apte à buter contre l'extrémité inférieure du tube (12).

5. Vélo d'appartement pourvu d'un dispositif de freinage selon l'une des revendications 1 à 4, où l'élément de butée présente plusieurs tampons de butée (23) espacés entre eux, et aptes à venir en butée contre la roue d'inertie (50).

6. Vélo d'appartement pourvu d'un dispositif de freinage selon l'une des revendications 1 à 5, où l'élément de butée est un aimant permanent.

7. Vélo d'appartement pourvu d'un dispositif de freinage selon l'une des revendications 1 à 6, où le dispositif de freinage (20) comprend
un élément de liaison (22) monté de manière sur le cadre (40) et l'élément de butée, et monté sur l'autre extrémité du câble (30) ; et
un deuxième élément élastique (24) venant en butée contre l'élément de liaison (22).

8. Vélo d'appartement pourvu d'un dispositif de freinage selon l'une des revendications 1 à 7, où le dispositif de freinage (20) présente plusieurs patins de freinage (25) montés sur une surface extérieure de l'élément de butée.

9. Vélo d'appartement pourvu d'un dispositif de freinage selon la revendication 8, où chaque patin de freinage (25) est en laine feutrée, en cuir, ou en caoutchouc.

Drawing