TWI478843B - Gear-type time differential brake device - Google Patents

Description

Gear type time difference brake device

The present invention relates to a brake device for a two-wheeled vehicle, and more particularly to a gear type time difference brake device that can make a front wheel slower than a rear wheel.

The prevalence of cycling has prompted more and more people to go outdoors to ride bicycles during holidays and leisure. The general bicycle braking device is equipped with a handlebar on the handlebar and driven by the rider’s hand. The brake device stops the front and rear wheels of the bicycle, and the bicycle brake system is independently activated, that is, when the brake handle is pressed separately, only the single brake device is driven. In the configuration specification of the general brake linkage, the bicycle right brake handle is linked to the brake device for controlling the front wheel, and the bicycle left brake handle is linked to the brake device for controlling the rear wheel. Once you are in danger of emergency braking, it is easy to get caught in the front wheel, or hold the front and rear wheels at the same time and cause the high-speed bicycle to overturn.

The weight of the conventional bicycle is shared by two wheels, and the center of gravity is distributed on the same line as the front and rear wheel positions, so that the bicycle is basically difficult to maintain balance in the standing posture. In addition to the emergency, the rider often has no extra time for rational analysis. Therefore, it is difficult to judge the moment when the front wheel should be braked, the rear wheel should be braked first, or the front and rear wheels are simultaneously braked. Therefore, it is even more impossible to remember. The brake grip at the right handle controls the front or rear wheels, so there is often a misjudgment that leads to a dangerous state. In such a situation that it is impossible to judge in an emergency, it is possible to quickly stop the misjudgment of the front wheels when the bicycle is traveling at a high speed or downhill. Such erroneous movements will be lifted due to the inertia of the rear wheels, causing the bicycle The possibility of overturning or slipping, on the other hand, if only the rear brake is used to quickly stop the rear wheel, it is easy to cause the bicycle to have insufficient braking force, and the sliding distance is too long. Therefore, it can be known that the bicycle braking mechanism of the conventional bicycle has room for improvement.

It can be seen from the above that bicycles that are traveling at a high speed or on a downhill road will seriously affect the condition of the vehicle due to the sequence of the front and rear wheels and the force, resulting in irreparable effects such as poor speed reduction or even overturning and slipping. For example: (1) It is the most dangerous thing to hold the front wheel alone. Because the rear wheel is still rushing forward when the front wheel is braking, it is easy to cause the rear of the bicycle to tilt up, and even cause the whole vehicle to overturn. (2) It is not safe to drive the rear wheel alone. Because the front wheel inertia maintains high-speed travel, the rear wheel that stops rotating will be dragged forward, causing the bicycle to slide too long on the road surface, seriously affecting the driving safety of others.

In addition, although the market has developed a technology based on the above shortcomings, such as two-wheel synchronous braking, but from the technical content, it is not difficult to find that "synchronous braking" is the best improvement method at the moment. However, these techniques employ a number of means, such as pulley mechanisms, hydraulic cylinders, ratcheting mechanisms, and even piston motion mechanisms, which are also designed to be used on bicycle brakes. Although it can achieve the effect of two-wheel synchronous braking, the bulk is not conducive to the installation of the frame, or the reciprocating sliding is easy to scratch the surface of the frame, not to mention the complicated structure caused by the complicated components, which makes the assembly work time-consuming.

Accordingly, it is an object of the present invention to provide a gear type time difference braking device for improving the disadvantages of conventional brake devices.

Another object of the present invention is to provide a gear type time difference braking device that can brake a vehicle more slowly than a rear wheel to further improve the riding safety of a two-wheeled vehicle rider.

The technical means adopted by the present invention for solving the problems of the prior art provides a gear type time difference braking device, comprising: a gear assembly having a toothed portion and a toothless portion; and a brake input mechanism including an input pull Component and one An input rack member is coupled between the input rack and a brake actuating assembly, the infeed rack being engaged with the toothed portion of the gear assembly, and being pulled by the input pull member Driving the gear assembly to rotate; and a time difference braking mechanism, comprising a time difference pulling member and a time difference output rack, the time difference pulling member is connected between the time difference output rack and a front wheel brake assembly, the time difference output rack A toothless portion corresponding to the gear assembly is disposed and is offset from the toothed portion by a time difference rotation angle, such that the gear assembly rotates the time difference rotation angle and engages the time difference output rack to brake the time difference.

According to an embodiment of the invention, the gear assembly is a coupling gear assembly including an input gear and an output gear of the associated shaft, the output gear having the toothless portion.

According to an embodiment of the invention, the pitch circle radius of the input gear is different from the pitch circle radius of the output gear.

According to an embodiment of the invention, the input rack is engaged with the toothed portion of the input gear, and the time difference output rack is disposed corresponding to the toothless portion of the output gear.

According to an embodiment of the present invention, a gear type time difference braking device further includes an instant braking mechanism, including an instant pulling member and an instant output rack, the instant pulling member being coupled to the instant output rack and a rear wheel brake Between the components, the instant output rack is engaged with the toothed portion of the output gear or the toothed portion of the input gear.

According to an embodiment of the present invention, a gear type time difference braking device further includes an instant braking mechanism, including an instant pulling member and an instant output rack, the instant pulling member being coupled to the instant output rack and a rear wheel brake Between the components, the instant output rack engages the toothed portion of the gear assembly.

According to an embodiment of the invention, the instantaneous output rack and the time difference output rack are respectively located on opposite sides of the gear assembly.

According to an embodiment of the present invention, the brake input mechanism is further included An force resetting member is included and elastically coupled to the input rack to reset the input rack.

According to an embodiment of the invention, the time difference braking mechanism further includes an output force returning member elastically coupled to the time difference output rack to reset the time difference output rack.

According to an embodiment of the invention, the geared time difference braking device comprises two sets of brake input mechanisms.

Through the technical means adopted by the present invention, the front wheel is driven by the time difference of the front and rear wheels, and the front wheel is about 0.1 to 0.2 seconds slower than the rear wheel. This technology effectively improves the shortcomings of the traditional two-wheeled vehicle brakes and avoids the bicycle passing the front wheel. The overturning or the rider caused by the early braking or the two-wheel stop suddenly is inertially moved away from the car body and other accidents, thus ensuring driving safety.

Furthermore, in the embodiment of the present invention, the front and rear brakes can be controlled by the same group of brake input mechanisms, and the braking action of the front wheel and the front wheel can be effectively performed to avoid the danger caused by mistakes.

Moreover, the gear type time difference braking device of the present invention is sufficient for bicycles of any type of vehicle and is also applicable to other two-wheeled vehicles such as electric vehicles and locomotives, and the transmission reliability of the gears and the racks is extremely high, and the possibility of malfunction of the mechanism is almost zero. The security of life and property is more trustworthy.

100‧‧‧Gear type time difference brake device

100a‧‧‧Gear type time difference brake device

100b‧‧‧Gear type time difference brake device

1‧‧‧ Gear components

1a‧‧‧ Gear components

11‧‧‧Incoming gear

12‧‧‧Output gear

13‧‧‧ toothed part

14‧‧‧ toothless part

2a, 2b‧‧‧煞车入力机构

21a, 21b‧‧‧Inlet pull members

22a, 22b‧‧‧ into the rack

23a, 23b‧‧‧ force resetting member

3‧‧‧Instant brake mechanism

31‧‧‧Instant pull members

32‧‧‧ Instant output rack

4‧‧‧Time difference brake mechanism

41‧‧‧ time difference pull member

42‧‧‧Time difference output rack

43a‧‧‧Power resetting member

5‧‧‧Fixed objects

B‧‧‧Bicycle

B1‧‧‧Right grip

B11‧‧‧ brake actuation components

B2‧‧‧Left grip

B21‧‧‧ brake actuation components

B3‧‧‧ Rear wheel

B31‧‧‧ Rear wheel brake assembly

B4‧‧‧ front wheel

B41‧‧‧Front wheel brake assembly

D1‧‧‧First direction of rotation

D2‧‧‧second direction of rotation

R1‧‧‧ radius

R2‧‧‧ radius

Θ‧‧‧time difference rotation angle

1 is a schematic view showing a gear type time difference braking device applied to a bicycle according to an embodiment of the present invention; and FIGS. 2 to 4 are views showing a continuous operation of a gear type time difference braking device according to an embodiment of the present invention; 5 is a schematic view showing a gear type time difference brake device according to another embodiment of the present invention; and FIG. 6 is a view showing a gear type time difference brake according to another embodiment of the present invention. Schematic diagram of the device.

Please refer to FIG. 1 to FIG. 4 . FIG. 1 is a schematic view showing a gear type time difference braking device applied to a bicycle according to an embodiment of the present invention, and FIGS. 2 to 4 are diagrams showing the invention according to the present invention. A schematic diagram of the continuous operation of the gear type time difference braking device of the embodiment.

As shown in the figure, a gear type time difference braking device 100 according to an embodiment of the present invention is mounted on a bicycle B, and includes a gear assembly 1, a brake input mechanism 2a, 2b, an instant braking mechanism 3, and One-time brake mechanism 4. The brake input mechanism 2a, 2b, the instant brake mechanism 3 and the timely brake mechanism 4 are respectively coupled to the gear assembly 1 and are mutually driven via the gear assembly 1.

In this embodiment, the gear assembly 1 is a coupling gear assembly including an input gear 11 and an output gear 12 of the associated shaft. The input gear 11 and the output gear 12 are synchronously rotated at the same rotational speed by the coupling shaft. Wherein, the pitch radius R1 of the input gear 11 and the pitch radius R2 of the output gear 12 may be different, and the pitch radius R1 of the input gear 11 may be larger or smaller than the pitch radius R2 of the output gear 12 for driving. Different linear speeds and reduction ratios are obtained on the pitch circles of different gears. In this embodiment, the pitch circle radius R1 is smaller than the pitch circle radius R2.

The gear assembly 1 has a toothed portion 13 and a toothless portion 14. The toothed portion 13 is engageable with other mechanisms (i.e., the brake input mechanism 2, an instant brake mechanism 3, and a time difference brake mechanism 4) for transmission. The toothless portion 14 is a flat structure as shown without a protruding tooth that can engage with other mechanisms.

The brake input mechanisms 2a, 2b are two groups in this embodiment, and each group includes an input pull member 21a, 21b and an input rack 22a, 22b. The input pulling member 21a is connected to the input rack 22a and the self The brake B of the right grip B1 of the car B is actuated between the components B11 (ie, the right-hand driver). The force pulling member 21b is connected between the input rack 22b and the brake actuating unit B21 of the left grip B2 of the bicycle B (i.e., the left handlebar handle). The input racks 22a, 22b, or "racks", engage the toothed portion 13 of the gear assembly 1. When the brake actuating assemblies B11, B21 are actuated, the force racks 22a, 22b are pulled through the force pulling members 21a, 21b, so that the input racks 22a, 22b drive the gear assembly 1 to rotate in a first rotational direction D1. Actuate.

The instant braking mechanism 3 includes an instant pulling member 31 and an instant output rack 32. The instant pulling member 31 is coupled between the immediate output rack 32 and a rear wheel brake assembly B31 of the bicycle B rear wheel B3. The immediate output rack 32 engages the toothed portion 13 of the gear assembly 1, for example, engages the toothed portion 13 of the output gear 12, or engages the toothed portion 13 of the input gear 11 as in the present embodiment. Thereby, when the gear assembly 1 rotates in the first rotation direction D1 to perform the braking operation, the input force gear 11 (or the output gear 12) can drive the immediate output rack 32, and pull the instant pulling member 31, thereby pulling The rim brake assembly B31 brakes the rear wheel B3.

The time difference braking mechanism 4 includes a time difference pulling member 41 and a time difference output rack 42. The time difference pulling member 41 is connected between the time difference output rack 42 and a front wheel brake assembly B41 of the bicycle B front wheel B4. The time difference output rack 42 is disposed corresponding to the toothless portion 14 of the gear assembly 1 and is different from the toothed portion 13 by a time difference of rotation angle θ. Then, when the gear assembly 1 rotates in the first rotational direction D1 to perform the braking operation, the time difference output rack 42 is not engaged with the gear assembly 1 during the period from the start of the rotation of the gear assembly 1 to the rotation of the time difference rotation angle θ. As shown in Figure 3. Until the gear assembly 1 rotates the time difference rotation angle θ, the time difference output rack 42 and the toothed portion 13 of the gear assembly 1 are in meshing state, and the time difference output rack 42 is thereby driven by the subsequent rotation of the gear assembly 1 to draw the time difference. The pulling member 41 is as shown in Fig. 4. Thus, the time difference pulling member 41 Thereby, the front wheel brake assembly B41 is pulled to brake the front wheel B4. In addition, the time difference output rack 42 and the immediate output rack 31 are preferably respectively located on opposite sides of the gear assembly 1 to maintain the balance torque, so that the operation of the overall device is more stable.

With the above configuration, since the operation of the time difference braking mechanism 4 is required to wait for the gear unit 1 to rotate through the empty window period of the time difference rotation angle θ, the braking operation for the front wheel B4 is performed slower than the braking operation of the rear wheel B3, and thereafter. The wheel B3 will brake earlier than the front wheel B4, and can safely slow down the bicycle B speed in a stable mechanical state and maintain the rider's riding safety.

Incidentally, in the present embodiment, the immediate output rack 32 of the instant braking mechanism 3 is disposed on the input gear 11 having a smaller pitch radius R1, and the time difference output rack 42 of the time difference braking mechanism 4 is disposed in the section. The output gear 12 having a large radius R2. Thereby, in the case where the rotational angular velocity of the gear assembly 1 is the same, the time difference output rack 42 can obtain a higher linear velocity at a larger pitch radius than the immediate output rack 32. Therefore, although the time difference braking mechanism 4 starts to brake the vehicle slowly, the time required from the start of the braking to the complete braking is shorter than that of the instant braking mechanism 3. Such a design allows the instant braking mechanism 3 and the time difference braking mechanism 4 to be different from each other even if the starting time is different, but the final pulling total stroke can be similar. In effect, the front wheel B4 and the rear wheel B3 have a time difference at the time of starting the braking, and finally the front wheel B4 and the rear wheel B3 can be caught by the same or similar braking force. Thereby, it can be avoided that when the rear wheel brake assembly B31 is pulled by the instant braking mechanism 3 and the brake is actuated to the extreme position, the front wheel brake assembly B41 is only halfway to move and cannot effectively grip the front wheel B4.

Please refer to FIG. 5, which is a schematic view showing a gear type time difference braking device 100a according to another embodiment of the present invention. After the brake action is completed, the brake force input mechanism 2a, 2b, the instant brake mechanism 3, and the time difference brake mechanism 4 can be pulled back to the original condition by the elastic force of the spring of the bicycle B assembly B31 and the front wheel brake assembly B41. Bit. However, as in the present embodiment, a force resetting member 23a, 2 may be additionally provided to the brake input mechanisms 2a, 2b, respectively. 3b, such as a spring or other resilient element. The force resetting member 23a is elastically disposed between the input rack 22a and a fixture 5 (for example, a casing), and the force returning member 23b is elastically disposed between the input rack 22b and the fixture 5. By the elastic force of the force returning members 23a, 23b, after the braking action is completed, the input racks 22a, 22b are assisted to be pushed back into the force pulling members 21a, 21b, and the gear assembly 1 is driven to rotate in the opposite direction to the first rotation. The second direction of rotation D2 of direction D1 is rotated back to the home position.

Similarly, the time difference braking mechanism 4 may be additionally provided with an output force returning member 43a. The output resetting member 43a is elastically disposed between the time difference output rack 41 and the fixed object 5 to push the time difference output rack 41 back to the original position by the force such as the elastic force at the end of the braking action.

Please refer to FIG. 6, which is a schematic view showing a gear type time difference braking device 100b according to another embodiment of the present invention. The gear type time difference braking device of the present invention is not limited to the above-described structure of the coupling gear, and can be provided as a gear unit 1a of a single gear in the case of simplification. The brake input mechanism 2, the instant brake mechanism 3, and the time difference brake mechanism 4 are disposed on each side of the gear assembly 1a, and preferably can also be arranged in a symmetric manner to achieve better operation stability by the torque balance.

Further, although the gear type time difference braking device of each of the above embodiments includes the instant braking mechanism 4, the present invention is not limited thereto, and the instant braking mechanism 4 may be independent of the gear type time difference braking device. In practical applications, when the rider simultaneously activates the front wheel and the rear wheel brake, the front wheel of the gear type time difference brake device is combined, and the time difference braking effect can be achieved slower than the rear wheel brake.

The above description is only for the preferred embodiment of the present invention, and those skilled in the art can make other improvements according to the above description, but these changes still belong to the inventive spirit of the present invention and the patents defined below. In the scope.

100‧‧‧Gear type time difference brake device

1‧‧‧ Gear components

11‧‧‧Incoming gear

12‧‧‧Output gear

13‧‧‧ toothed part

14‧‧‧ toothless part

2a, 2b‧‧‧煞车入力机构

21a, 21b‧‧‧Inlet pull members

22a, 22b‧‧‧ into the rack

3‧‧‧Instant brake mechanism

31‧‧‧Instant pull members

32‧‧‧ Instant output rack

4‧‧‧Time difference brake mechanism

41‧‧‧ time difference pull member

42‧‧‧Time difference output rack

5‧‧‧Fixed objects

R1‧‧‧ radius

R2‧‧‧ radius

Θ‧‧‧time difference rotation angle

Claims (10)

A gear type time difference braking device comprises: a gear assembly having a toothed portion and a toothless portion; a brake input mechanism comprising an input pull member and an input rack, the input pull member being connected to the input force Between the rack and a brake actuating assembly, the input rack is engaged with the toothed portion of the gear assembly, and the gear assembly is rotated when being pulled by the input pull member; and a time difference brake mechanism, including a time difference pulling member and a time difference output rack connected between the time difference output rack and a front wheel brake assembly, wherein the time difference output rack is disposed corresponding to the toothless portion of the gear assembly and The toothed portion differs by a time difference rotation angle, so that the gear assembly rotates the time difference rotation angle and engages the time difference output rack to brake the time difference. The gear type time difference braking device according to claim 1, wherein the gear assembly is a coupling gear assembly, and includes an input gear and an output gear of the associated shaft, the output gear having the toothless portion. The gear type time difference braking device according to claim 2, wherein a pitch circle radius of the input force gear is different from a pitch circle radius of the output gear. The gear type time difference braking device according to claim 3, wherein the input rack is engaged with a toothed portion of the input gear, and the time difference output rack is disposed corresponding to the toothless portion of the output gear. The gear type time difference braking device according to claim 3, further comprising an instant braking mechanism, comprising an instant pulling member and an instant output rack, the instant pulling member being coupled to the instant output rack and a rear wheel brake Between the components, the instant output rack is engaged with the toothed portion of the output gear or the toothed portion of the input gear. The gear type time difference braking device according to claim 1, further comprising an instant braking mechanism comprising an instant pulling member and an instant output rack, the instant pulling member being coupled to the instant output rack and a rear wheel brake Between the components, the instant output rack engages the toothed portion of the gear assembly. The gear type time difference braking device according to claim 6, wherein the instantaneous output rack and the time difference output rack are respectively located on opposite sides of the gear assembly. The gear type time difference braking device according to claim 1, wherein the brake input mechanism further comprises an input force resetting member elastically disposed on the input rack to reset the input rack. The gear type time difference braking device according to claim 1, wherein the time difference braking mechanism further comprises an output force returning member elastically disposed on the time difference output rack to reset the time difference output rack. The gear type time difference braking device of claim 1, wherein the gear type time difference braking device comprises two sets of brake input mechanisms.