TWI579190B - Variable proportions of separate front and rear brake handle interlocking brake device - Google Patents

Description

Separate variable ratio second brake handle linkage brake device and vehicle thereof

The invention relates to a linkage brake device which is arranged on the left and right brake handles, in particular to a two-brake handle one-way linkage brake control device, and can change the front and rear wheel brake ratio according to the continuity of the brake press force during the braking process. The brake device and the vehicle to which it is applied.

Generally speaking, when the rider performs deceleration or stops braking, it is preferable to first brake the rear wheel and then brake the vehicle due to the inertial force of the vehicle and the center of gravity of the vehicle concentrated between the front wheel and the rear wheel and biased to the rear wheel position. In the front wheel, the vehicle can be decelerated or stopped in good handling. Especially in the case of new purchase unfamiliar car conditions, when the vehicle is driving at a high speed or on a downhill road, the rider wants to decelerate and inadvertently manipulates the front wheel brakes separately, which is easy to cause the vehicle to be locked due to the inertial force of the vehicle and the front wheel. Serious out of control can lead to accidents involving rollovers.

Another brake structure uses a single brake grip to connect the front wheel brake and the rear wheel brake with a double brake line for the controller to lock the brake by controlling its single brake grip. Please refer to the patent case number. The brake handle structure of the synchronous front and rear wheel brakes (shown in FIGS. 1A, 1B, and 1C) of the 86210399 patent is mainly attached to a locomotive or a bicycle handle, and a brake handle 10 is fixed, and the brake handle is fixed. 10 is further locked with a fixing seat 11; wherein the fixing seat 11 is at the front end, and the guiding hole 111 and the rear guiding hole 112 are provided for the front and rear wheel brake lines to pass through. A front sliding groove 1111 and a rear sliding groove 1121 are respectively formed at the upper end of the guiding hole, and a hidden groove 12 is opened at the rear end of the wire holder; and a pivoting groove 101 is opened at the position of the wire of the brake handle, and an 8 is opened. The pivoting tabs 13 of the font are respectively pivotally connected to the pull rod 14 and embedded in the pivoting slot 101; when the front and rear brake lines are simultaneously braked, and the rocker flap of the application lever 14 is swung, and the 8-shaped pivoting piece 13 is available for the drawbar The characteristics of up and down swing, if the front and rear wheels are unevenly moved, or the front and rear wheel brake lines are slightly slack, the lever and the 8-shaped pivoting plate can be corrected, so that the front and rear wheels can simultaneously have the effect of braking; The structure of the tie rod 14 is swayed in a see-saw shape when braking, so that the function of correcting the synchronous brakes of the front and rear wheels is lost, and even the lack of the same amount of brakes of the front and rear wheels is generated, so that the vehicle speed suddenly stops and the driving safety is impaired. In addition, it is extremely easy to cause the front wheel and the rear wheel to be locked by the brake at the same time, thereby causing damage to the controller, and thus its safety has considerable problems.

The purpose of the present invention is to provide a brake control device that utilizes the priority of the left and right brake levers to perform the rear wheel brakes and then automatically converts the front and rear wheel brake ratios.

In order to achieve the purpose of the above device, the technical means of the present invention is to provide a first brake handle fixed to the first handle, comprising: a first body, a first handle and a braking force distribution mechanism. The first body has a bracket, and one side of the bracket is provided with a rear brake hole and a linkage hole. The first handle is pivotally disposed on the first body, and has a pressing portion and a driving portion. The driving portion is rotated to the braking position by the releasing position corresponding to the pressing portion, and the braking force distribution mechanism is slidably disposed on the bracket, and has a swing arm and a pull rod assembly, the swing arm ends respectively The first end of the two levers is pivotally connected to the driving portion of the first button, and the other end is pulled by a first lever fulcrum of the swing arm. The swing arm maintains an angle between the two links by an elastic force of an elastic member, and continues After the external force overcomes the elastic force, the two links are gradually changed to another angle according to the magnitude of the external force, so that the position of the swing arm is slid from a first lever fulcrum to a second lever fulcrum, thereby changing the pulling a brake ratio of the wheel brake line and the linkage line; and a second brake handle fixed to the second handle, comprising a second body, a second handle and a brake force steering mechanism, the second body having a body having a front brake hole and a linkage hole, the second button pivoting on the second body, and having a pressing portion capable of receiving an external force and a corresponding release position a driving portion that swings to a braking position, the braking force steering mechanism includes a swinging block, and the left and right ends of the swinging block are respectively pivotally connected to the front end of one of the front wheel brake wires by the front brake connecting hole and a tail end of the linkage line introduced by the linkage hole, the pivot block is pivotally disposed at the second push button portion in the middle, and the driving portion of the second handle is rotated from the release position to the Braking position or pulling the first button During the moving line, the swinging block is pivoted by the pivoting axis and is restrained by the pulling force or the resistance of the pivoting end of the linking line, and the swinging block is rotated toward the pivoting end of the front wheel brake line. And pull the front wheel brake line.

In one embodiment, the distance between the first lever pivot point and the swing arm pivotally connected to the rear brake line is less than the distance between the second lever pivot point and the swing arm pivotally connected to the rear brake line.

In one embodiment, the swing arm has a working surface facing the rear brake hole and the linkage hole and a bottom surface facing the working surface, and the rod assembly is disposed outside the bottom surface of the swing arm, The two links are an active pull rod and a passive pull rod, which are pivotally connected to the tail end of the active pull rod and the head end of the passive pull rod, and the active pull rod end end is pivotally connected to the first push button driving portion The tail end of the passive pull rod spans the side of the working surface from the bottom side of the swing arm, and a pulley is disposed at the tail end, and the wheel surface of the pulley contacts the working surface. The elastic member is sleeved on the pivot between the active pull rod and the passive pull rod, and the two ends thereof are respectively fixed to the active pull rod and The torsion spring of the passive lever, or the left and right ends of the swing arm are pivotally connected to the rear wheel brake line and a second connecting member to pivotally connect the head end of the linkage line, the elastic member is a tail end The two ends are respectively fixed to the first connecting member and the tension spring on the passive pull rod.

In one embodiment, the pull rod assembly further includes a connecting rod pivotally connected to the active pull rod and the first push button driving portion, respectively, for causing the variable proportional interlocking brake device to be pressed by the first button When the driving portion is pulled, it is possible to move along the rear wheel brake line and the axis extending direction of the linkage line.

The characteristics of this creation include at least: 1. The ratio of the front and rear brakes can be automatically assigned according to the strength of the driver pressing the brake. 2. It can be applied to front and rear drum brakes, front disc rear drums, front and rear disc brakes and other brake systems. 3. When the brake is actuated, the front brake does not act earlier than the rear brake, and the rear brake force is greater than the front brake force. 4. The initial braking ratio is small for the front wheel and large for the rear wheel, and the brake ratio is continuously changed during the same stroke of pressing the brake. The final brake ratio is large for the front wheel and small for the rear wheel. 5. It can support the rear and front wheel brake line structure pulled by the original left and right brake handles, and add the function of changing the ratio and the left and right brake handles to maintain the original rear wheel brake separately connected to a left brake handle and the original front wheel brake. The structure of a right brake handle is simplistic and not easy to malfunction. 6. The creation of the link mechanism is such that when the brake force distribution mechanism that requires a large output force is pulled, the brake line and the linkage line connected by the brake force distribution mechanism can be pulled in the axial direction, so that the pulling direction is not bent. And damage the brake line and linkage line.

10‧‧‧Brake handle

101‧‧‧ pivot slot

11‧‧‧ Fixed seat

111‧‧‧ lead hole

1111‧‧‧ front sliding ditch

112‧‧‧ rear guide hole

1121‧‧‧ rear sliding ditch

12‧‧‧Hidden trough

13‧‧‧ pivoting piece

14‧‧‧ lever

20‧‧‧Brake handle linkage brake

30‧‧‧First brake handle

31‧‧‧First Ontology

311‧‧‧ bracket

3111‧‧‧ rear brake hole

3112‧‧‧Linking holes

3113‧‧‧ Guide slot

32‧‧‧First press

321‧‧‧ Pressing Department

322‧‧‧Drive Department

3221‧‧‧Brake position

3222‧‧‧ release position

33‧‧‧Brake force distribution mechanism

331‧‧‧ swing arm

3311‧‧‧Working face

3312‧‧‧ bottom

3313‧‧‧First connector

3314‧‧‧Second connection

3315‧‧‧rail

332‧‧‧ rod assembly

3321‧‧‧Two links

33211‧‧‧Active lever

33212‧‧‧ Passive lever

33213‧‧‧ pivot

3322‧‧‧ pulley

33221‧‧‧90

3323‧‧‧ Connecting rod

333,333’‧‧‧Flexible parts

334‧‧‧First lever pivot

335‧‧‧second leverage point

40‧‧‧Second brake handle

41‧‧‧Second ontology

411‧‧‧ body

4111‧‧‧ front brake hole

4112‧‧‧Linking holes

42‧‧‧second press

421‧‧‧ Pressing Department

422‧‧‧Drive Department

4221‧‧‧ release position

4222‧‧‧Brake position

43‧‧‧Brake force steering mechanism

431‧‧‧Swing block

4311‧‧‧Front brake deck

4312‧‧‧ linkage card holder

432‧‧‧ pivot

A‧‧‧Vehicle

B1‧‧‧ Rear wheel brake

B2‧‧‧Front wheel brakes

C1‧‧‧ first hand

C2‧‧‧ second hand

F‧‧‧ car front

S1, S2, S3, S4‧‧‧ distance

T1‧‧‧ first angle

T2‧‧‧second angle

X1‧‧‧ axis

W1‧‧‧ rear wheel brake line

W11‧‧‧ head end

W12‧‧‧ end

W2‧‧‧Front wheel brake line

W21‧‧‧ head end

W22‧‧‧ end

W3‧‧‧ linkage line

W31‧‧‧ head end

W32‧‧‧ end

1A is a perspective exploded view of a brake structure of the prior art; FIG. 1B is a diagram showing an embodiment of the prior art brake operation; FIG. 1C is a perspective view showing an embodiment of the prior art brake after braking; FIG. 2 is a perspective assembled view of an embodiment of the split variable ratio two brake handle interlocking brake device of the present invention; FIG. 3 is a different view of FIG. 3 is an exploded perspective view of the first brake handle of FIG. 3; FIG. 5 is an exploded perspective view of the second brake handle of FIG. 3; FIG. 6 is a perspective view of the swing arm of FIG. 3 is an exploded perspective view of one embodiment of the drawbar assembly; FIG. 7 is an exploded perspective view of FIG. 6; FIG. 8 to FIG. 10 are diagrams showing the operation of the brake force distribution mechanism of the first brake handle of the present invention; A top view of the brake force steering mechanism of the second brake handle is created; FIG. 12 is a schematic view showing the actuation of the brake force steering mechanism of the second brake handle of the present invention by the second push button; FIG. 13 is a second brake of the present invention. The braking force steering mechanism of the handle is actuated by the linkage of the first brake handle; FIG. 14 to FIG. 15 are schematic diagrams showing the movement trajectory when the braking force distribution mechanism of the first brake handle of the present invention is pulled.

The present invention is described in detail below with reference to the drawings, and the drawings are simplified schematic diagrams, and the basic structure of the present invention is only illustrated in a schematic manner, and therefore only the components related to the present creation are indicated in the drawings. The components shown are not drawn in the number, shape, size ratio, etc. at the time of implementation, and the actual size of the implementation is a selective design, and the component layout form may be more complicated.

First, please refer to FIG. 2 and FIG. 3 and refer to FIG. 4 and FIG. 5 simultaneously. FIG. 2 is an embodiment of the present invention mounted on the left and right handles, and the direction indicated by the arrow in the figure ( Pointing to the upper right of the figure is the front F of the vehicle, and for convenience of illustration in the figure, 图 turn FIG. 2 to FIG. 3, and the front F of the vehicle indicated by the arrow is upward in the figure. The brake variable handle linkage brake device 20 of the first and second brakes of the split type of the present embodiment is suitable for being assembled in one of the first handle C1 and the second handle C2 of the vehicle A (for example, the vehicle) The first hand C1 is the left hand handle and the second hand C2 is the right hand handle) for allocating and transforming the rear wheel brakes (B1, B2) and the front brake line W1 and the front wheel brake line W2. The braking force, the device includes: a first brake handle 30 is fixed to the first handle C1, and includes: a first body 31, a first handle 32 and a braking force distribution mechanism 33, the first body The 311 has a bracket 311, and a rear brake hole 3111 and a linkage hole 3112 are disposed on the side of the bracket 311. The first handle 32 is pivotally disposed on the first body 31, and has a pressing portion 321 and a The driving portion 322 can rotate the driving portion 322 correspondingly to a braking position 3221 and a releasing position 3222 when receiving an external force and releasing the external force (refer to the braking position 3221 and the releasing position 3222). 8. As shown in FIG. 10 and FIG. 14 and FIG. 15, of course, the braking position 3221 is based on the magnitude of the applied external force. The brake force distribution mechanism 33 is disposed on the bracket 311 and slidable on the bracket 311 (as shown in FIG. 4, in order to guide the sliding direction of the brake force distribution mechanism 33, the bracket 311 is A pair of guide grooves 3113 may be disposed, and the braking force distribution mechanism 33 is provided with a pair of guide rails 3315 that can be embedded in the guide groove 3113 corresponding to the position of the pair of guide grooves 3113, as shown in FIGS. 4 to 6, which has a a swing arm 331 and a pull rod assembly 332. The left and right ends of the swing arm 331 are respectively pivotally connected to a rear wheel brake wire W1 introduced by the rear brake hole 3111 (as shown in FIG. 3, the front end of the rear brake wire W1 is W11). Pivot connected to the rear brake hole 3111, the tail end W12 is connected to the rear wheel brake B1) and introduced by the linkage hole 3112 The first end W31 of the linkage line W3, as shown in FIG. 7, the lever assembly 332 includes a two-link 3321, and the two links 3321 maintain the angle of the two links 3321 with an elastic force of the elastic member 333. The two links 3321 are connected to the driving portion 322 at one end, and the other end is hung on the swing arm 331. When the driving portion 322 is rotated to the braking position 3221 by the releasing position 3222, the two links 3321 increase in force. The elastic force of the elastic member 333 is changed to change the angle of the angle of the elastic member 333, and the position of the swing arm 331 is driven by the second link 3321 to be slid by a first lever fulcrum 334 to a second lever fulcrum 335 (refer to FIG. 8 , 9 and FIG. 10), and after the force of the two links 3321 is less than the elastic force, the position of the swing arm 331 is returned to the first lever fulcrum 334, thereby changing the pulling of the rear wheel brake line W1 and The linkage line W3 (pulling the rear wheel brake line W1 to generate the rear wheel braking force, pulling the pulling force of the linkage line W3 is transmitted to the front wheel brake wire W2 by the action of the swinging block 431, therefore, the linkage line here The W3 pull force is equivalent to the pull ratio of the tension of the front wheel brake wire W2 (see Figure 4). Preferably, as shown in FIG. 9, at a moment when the swing arm 331 is pulled, the distance S1 between the first lever pivot point 334 and the swing arm 331 pivotally connected to the head end W11 of the rear brake wire W1 is smaller than the The distance between the first lever fulcrum 334 and the swing arm 331 is pivoted to the head end W31 of the linkage line W3. According to the principle of the lever, the tension of the rear brake line W1 is greater than the linkage line W3, that is, the subsequent transmission to the front brake line. The tension applied by W1), so that the brake can be actuated instantaneously, the front wheel brake does not act earlier than the rear wheel brake, and the rear wheel brake force is greater than the front wheel brake force, but then the distance S1 is increased after the stroke of the swing arm 331 is pulled. The ratio of the distance S2 is gradually the same, and even the distance S3 of the second lever fulcrum 335 and the swing arm 331 pivotally connected to the head end W11 of the rear brake line W1 is greater than the second lever fulcrum 335. The swing arm 331 pivotally connects the distance S4 of the head end W31 of the linkage line W3 (also according to the principle of the lever, the tension of the rear brake line W1 is less than the linkage line W3, that is, the subsequent transmission to the front brake line W1. Pulling force, so that the braking process is finally the brake that the front wheel braking force is greater than the rear wheel braking force The proportion of force distribution.

As shown in Figure 5 and Figure 11 to Figure 13. The second brake handle 40 is fixed to the second handle C2, and includes a second body 41, a second handle 42 and a braking force steering mechanism 43. The second body 41 has a body 411 ( Preferably, the second body 41 and the base 411 are integrally formed. The base 411 has a front brake hole 4111 and a linkage hole 4112. The second handle 42 is pivoted on the second handle 41. The second body 41 has a pressing portion 421 and a driving portion 422. The pressing portion 421 can swing the driving portion 422 to a braking position 4222 when receiving an external force and releasing the external force (as shown in FIG. 12). And a release position 4221 (shown in FIG. 11), the braking force steering mechanism 43 includes a swinging block 431, and the left and right ends of the swinging block 431 are respectively pivotally connected by a front brake card holder 4311. The brake hole 4111 is introduced into the front end W21 of the front wheel brake wire W2 (as shown in FIG. 3, the front end W21 of the front wheel brake wire W2 is pivotally connected to the rear brake hole 4111, and the tail end W22 is connected to the front wheel brake B2), the end end W32 of the linkage line W3 introduced by the linkage hole 4112 is pivotally connected by a linkage card holder 4312 (the head end W31 of the linkage line W3 is located at the first end The handlebar 30) has a pivot 432 in the middle of the swinging block 431 (as shown in FIG. 5, in order to make the swinging block 431 easier to rotate, the pivot 432 can be further sleeved and then the swinging block The 431 pivoting member is pivotally disposed on the second push button 42 driving portion 422.

As shown above, the operation diagrams of FIGS. 11 to 12 are shown. When the user presses the pressing portion 421 of the second handle 42, the pressing portion 421 moves the driving portion 422 from the releasing position 4221 to the braking position 4222, as shown in FIG. 12, the swinging block 431 in the figure. When the right portion (the right side in the drawing) is pulled by the driving portion 422, the interlocking card holder 4312 of the swinging block 431 generates a resistance due to the unactuated motion of the interlocking wire W3, and the rotation direction thereof is restricted, so that the swinging block 431 is pivoted. The shaft 432 is an axis, and rotates toward the one end of the front brake deck 4311 (clockwise rotation), and pulls the front wheel brake wire W2, To generate front wheel braking force.

As shown in FIG. 11 and FIG. 13 , when the user does not press the pressing portion 421 of the second handle 42 , the swinging block 431 remains in the original position. At this time, when the user presses the first button 32 (as shown in FIG. 8 to FIG. 10 ), so that one end of the linkage block 4312 of the swing block 431 is pulled outward by the linkage line W3, and the swing block 431 is turned toward the linkage centering on the pivot 432. The card holder 4312 is rotated at one end (clockwise rotation), and the front wheel brake wire W2 is pulled to generate the front wheel braking force (the second button 42 is not activated at the beginning).

It can be seen that, when the second button 42 of the second brake handle 40 is pressed separately (the first brake handle 30 does not move), the second brake handle 40 does not interfere with the first brake handle with the linkage line W3. Actuating 30, the front brake wire W2 can be pulled radially to generate the front brake force; and when the first handle 32 of the first brake handle 30 is pressed separately (the second brake handle 40 does not move), the first brake The handle 30 transmits the pulling force with the linkage line W3, and then the pulling force is turned by the swinging block 431 of the second brake handle 40 to pull the front brake wire W2 to generate the front braking force, so the first brake handle 30 is apart from the original In addition to the rear brake force generated by the rear brake line W1, there is no need to additionally provide a front brake line connecting the front wheel brake B2, and the original front brake line W2 can still be used to generate the linkage of the front and rear brake forces and the change of the braking force. proportion.

More specifically, as shown in FIGS. 6 and 7. The swing arm 331 has a working surface 3311 facing the rear brake hole 3111 and the linkage hole 3112 and a bottom surface 3312 facing away from the working surface 3311. The rod assembly 332 is disposed on the bottom surface 3312 of the swing arm 331. On the outer side, the two links 3321 are an active pull rod 33211 and a passive pull rod 33212. The pivot end 33213 is connected to the tail end of the active pull rod 33211 and the front end of the passive pull rod 33212. The active pull rod 33211 head end is connected. And pivotally connected to the first push button 32, the tail end of the passive pull rod 33212 is the bottom surface of the swing arm 331 A side of the 3312 spans the side of the working surface 3311, and a pulley 3322 is disposed at the tail end. The wheel surface 33221 of the pulley 3322 contacts the working surface 3311.

As shown in Figure 7 and Figure 14. In one embodiment, the elastic member 333 is sleeved on the pivot shaft 33213 between the active pull rod 33211 and the passive pull rod 33212, and the two ends thereof are respectively fixed to the twist of the active pull rod 33211 and the passive pull rod 33212. The spring 333, or, as shown in FIG. 8, in an embodiment, the left and right ends of the swing arm 331 are pivotally connected to the front end W11 of the rear wheel brake wire W1 and a second connecting member by a first connecting member 3313. 3314 is pivotally connected to the front end W31 of the linkage line W3. The elastic member 333' is a tension spring which is fixed on the first connecting member 3313 and the passive pulling rod 33212 at both ends of the head end (as shown in FIG. 8 , In the embodiment, the two ends of the tension spring are respectively fixed on the pivot of the pivoting pulley 3322 at the end of the passive pull rod 33212 and the pivotal pivot of the first connecting member 3313 and the swing arm 331. In order to apply the elastic force to the tie rod assembly 332 in a balanced manner, the tension springs are two and symmetrically disposed on the outer sides of the passive pull rods 33212.

As shown in Figure 14 and Figure 15. In this embodiment, the pull rod assembly 332 further includes a connecting rod 3323 pivotally connected to the active pull rod 33211 and the first push button 32 driving portion 322, respectively, for the braking force distribution mechanism 33 to be When the first button 32 is pulled by the driving portion 322, it can be moved along the extending direction of the rear wheel brake wire W1 and the axis X1 of the linking wire W3 (that is, along the groove of the guide groove 3113 shown in FIG. 4). When the rear end brake wire W1 head end W11 and the interlocking wire W3 head end W31 are pulled, the folding angle is not formed and the life of the rear wheel brake wire W1 and the interlocking wire W3 is affected, thereby ensuring driving safety.

In an embodiment, the application of the present invention is disclosed. As shown in FIG. 2, in a vehicle A, the vehicle A has the above-mentioned separate, interlocking, variable brake ratio brake lever linkage brake device 20, one for The first brake handle 30 is fixed with a first handle C1 and a second brake handle. The second handle C2 and the rear wheel brake B1 fixed by the hand 40 are used to brake the rear wheel of the vehicle, and have a rear wheel brake wire W1 that connects and controls the brake of the rear wheel brake B1; and a front wheel brake The B2 is used to brake the front wheel of the vehicle A, and has a front wheel brake wire W2 that connects and controls the brake of the front wheel brake B2.

In summary, it is merely described that the present invention is a preferred embodiment or embodiment of the technical means for solving the problem, and is not intended to limit the scope of implementation of the present patent. Any change or modification that is consistent with the scope of the patent application scope of this creation or the scope of the patent creation is covered by the scope of the creation patent.

20‧‧‧Brake handle linkage brake

30‧‧‧First brake handle

31‧‧‧First Ontology

311‧‧‧ bracket

32‧‧‧First press

321‧‧‧ Pressing Department

322‧‧‧Drive Department

33‧‧‧Brake force distribution mechanism

40‧‧‧Second brake handle

41‧‧‧Second ontology

411‧‧‧ body

42‧‧‧second press

421‧‧‧ Pressing Department

422‧‧‧Drive Department

43‧‧‧Brake force steering mechanism

431‧‧‧Swing block

B1‧‧‧ Rear wheel brake

B2‧‧‧Front wheel brakes

C1‧‧‧ first hand

C2‧‧‧ second hand

F‧‧‧ car front

W1‧‧‧ rear wheel brake line

W11‧‧‧ head end

W12‧‧‧ end

W2‧‧‧Front wheel brake line

W21‧‧‧ head end

W22‧‧‧ end

W3‧‧‧ linkage line

W31‧‧‧ head end

W32‧‧‧ end

Claims (10)

The utility model relates to a separate variable ratio two brake handle linkage brake device, which is suitable for assembling a first handle and a second handle of a vehicle for distributing and changing front and rear wheel brakes before and after the rear brake line The braking force, the device comprises: a first brake handle fixed to the first handle, comprising: a first body, a first handle and a braking force distribution mechanism, the first body having a support The bracket is provided with a rear brake hole and a linkage hole on one side of the bracket, and the first button is pivotally disposed on the first body, and has a pressing portion for receiving an external force and a corresponding to the force a release portion is rotated to a driving position of a braking position, the braking force distribution mechanism is slidably disposed on the bracket, and has a swing arm and a pull rod assembly, the two ends of the swing arm are respectively pivotally connected by the rear brake a head end of a rear wheel brake wire and a head end of a linkage line introduced by the linkage hole, the lever assembly is pivotally connected to the driving portion of the first button by one end of the two link, and the other end Pulling the swing arm with a first lever fulcrum located at the swing arm, the two The elastic force of an elastic member maintains the two links to maintain an angle, and after a continuous external force overcomes the elastic force, the two links are gradually changed to another angle according to the magnitude of the external force, so that the swing arm is driven. The position is slid by a first lever fulcrum to a second lever fulcrum, thereby changing a pulling ratio of the rear wheel brake line and the linkage line; and a second brake handle is fixed to the second handle, comprising: a second body, a second handle and a brake force steering mechanism, the second body has a body, the base body has a front brake hole and a linkage hole, and the second button is pivoted on the first body a body having a pressing portion capable of receiving an external force and a driving portion corresponding to an external force and swinging from a releasing position to a braking position, the braking force steering mechanism comprising a swinging block, the swinging block being left and right The end is respectively pivotally connected to the front end of one of the front wheel brake lines and the lead wire introduced by the linkage hole a rear end of the linkage line, the pivot block is pivotally disposed at the second push-pull portion in a middle portion, and the driving portion of the second push button is rotated from the release position to the braking position or at the second position During the pulling of the linkage line, the swinging block is pivoted by the pivoting axis and is restrained by the pulling force or the resistance of the pivoting end of the linkage line, so that the swinging block faces the front wheel of the pivoting connection One end of the brake wire rotates, and the front brake wire is pulled. The brake device of claim 1, wherein the distance between the first lever fulcrum and the swing arm pivotally connected to the rear brake line is smaller than the second lever fulcrum and the swing arm pivotally connected to the rear brake line. distance. The brake device of claim 1, wherein the swing arm has a working surface facing the rear brake hole and the linkage hole and a bottom surface facing the working surface, the tie rod assembly is set Outside the bottom surface of the swing arm, the two links are an active pull rod and a passive pull rod, which are pivotally connected to the tail end of the active pull rod and the front end of the passive pull rod, and the active pull rod end end is pivoted Connected to the first push-pull portion, the tail end of the passive pull rod spans the side of the working surface from the bottom side of the swing arm, and a pulley is disposed at the tail end, and the wheel surface of the pulley contacts the working surface . The brake device of claim 3, wherein the elastic member is sleeved between the active pull rod and the passive pull rod, and the two ends thereof are respectively fixed to the active pull rod and the passive Torsion spring of the tie rod. The brake device of claim 3, wherein the left and right ends of the swing arm are pivotally connected to the rear end of the linkage line by a first connecting member, and the second connecting member is pivotally connected to the front end. The elastic member is a tension spring which is fixed on the first connecting member and the passive pulling rod at both ends of the head and the tail. The brake device of claim 3, wherein the bracket has a pair of guide grooves, and the brake force distribution mechanism is provided with a pair of guide rails corresponding to the pair of guide rails for guiding the brake force distribution. The sliding direction of the mechanism. The brake device of claim 6, wherein the pull rod assembly further comprises a connecting rod pivotally connected to the active pull rod and the first push button driving portion for respectively distributing the braking force When the mechanism is pulled by the first push button, the mechanism can be moved along the rear wheel brake line and the axis extending direction of the linkage line. The brake device of claim 1, wherein the second body and the seat body are integrally formed. The brake device of claim 1, wherein the first handle of the vehicle is a left hand handle and the second handle is a right hand handle. A vehicle comprising: a split type variable ratio interlocking brake device according to any one of claims 1 to 9; a first handle for fixing the first brake handle; a second hand Putting the second brake handle fixed; a rear wheel brake for braking the rear wheel of the vehicle, having a rear wheel brake line connecting and controlling the brake of the rear wheel brake; and a front wheel brake, It is used to brake the front wheel of the vehicle, which has a front wheel brake line that connects and controls the brake of the front wheel brake.