阅读说明：本技术 一种可始终保持最大制动效果的刹车辅助装置 (Brake auxiliary device capable of always keeping maximum brake effect ) 是由 李妍 于 2021-01-18 设计创作，主要内容包括：本发明涉及汽车养护相关领域,公开了一种可始终保持最大制动效果的刹车辅助装置,包括主箱体,主箱体内设有开口向左的刹车盘腔,刹车盘腔前后两侧连通设有以刹车盘腔位置中心对称设置的刹车移动块腔,刹车移动块腔远离刹车盘腔侧连通设有丝杆腔,丝杆腔远离刹车盘腔侧连通设有丝杆齿轮腔,刹车移动块腔右侧连通设有滑动块腔,通过踩踏刹车板使抵接杆作用在抵接滑块上,以此来判断刹车片被磨损的程度,当被磨损至一定厚度后,踩踏刹车板会通过动力磁铁作为动力来使刹车片向内运动一定距离,使其只需踩踏较小距离即可一直达到最佳的制动效果,这样可减少驾驶员因误判断而进行的汽车保养次数,同时也避免了因踩踏距离不足而导致的交通事故。(The invention relates to the field related to automobile maintenance, and discloses a brake auxiliary device capable of always keeping the maximum braking effect, which comprises a main box body, wherein a brake disc cavity with a leftward opening is arranged in the main box body, the front side and the rear side of the brake disc cavity are communicated with brake moving block cavities symmetrically arranged by the center of the position of the brake disc cavity, the side, away from the brake disc cavity, of each brake moving block cavity is communicated with a screw rod cavity, the side, away from the brake disc cavity, of each screw rod cavity is communicated with a screw rod gear cavity, the right side of each brake moving block cavity is communicated with a sliding block cavity, a butt rod acts on a butt sliding block by stepping on a brake plate, so that the abrasion degree of the brake plate is judged, when the brake plate is abraded to a certain thickness, the brake plate can move inwards for a certain distance by using a power magnet, the brake plate can always achieve the optimal braking effect by stepping on a smaller distance, and the automobile maintenance frequency, meanwhile, traffic accidents caused by insufficient treading distance are avoided.)

1. The utility model provides a can keep the brake auxiliary device of biggest braking effect all the time, includes the main tank body, its characterized in that: a brake disc cavity with a leftward opening is arranged in the main box body, brake moving block cavities symmetrically arranged on the center of the position of the brake disc cavity are communicated with the front side and the rear side of the brake disc cavity, a lead screw cavity is communicated with the side, away from the brake disc cavity, of the brake moving block cavity, a lead screw gear cavity is communicated with the side, away from the brake disc cavity, of the lead screw cavity, a sliding block cavity is communicated with the right side of the brake moving block cavity, a hydraulic block cavity positioned on the right side of the lead screw gear cavity is communicated with the side, away from the brake disc cavity, of the sliding block cavity, a hydraulic communicating cavity is communicated with the right side of the hydraulic communicating cavity, a hydraulic main pipeline with a forward opening is communicated with the right side of the hydraulic communicating cavity, a butting slider cavity is communicated with the side, close to the brake disc cavity, of the sliding block cavity, a power magnet cavity, the side, far away from the brake disc cavity, of the transmission cavity is communicated with a wire wheel cavity, the side, far away from the brake disc cavity, of the wire wheel cavity is communicated with a wire wheel cavity, the side, far away from the brake disc cavity, of the transmission cavity is provided with a limiting block cavity positioned on the right side of the wire wheel cavity, the side, far away from the brake disc cavity, of the wire wheel cavity is provided with a reset button cavity with an opening facing away from the brake disc cavity, the right side of the reset button cavity is communicated with a reset auxiliary magnet cavity, the brake disc cavity is connected with a brake disc in a rotationally matched manner, the inner side of the lead screw cavity is connected with a lead screw in a sliding fit manner, the side, far away from the brake disc cavity, of the lead screw extends into the lead screw gear cavity and extends into the brake moving block cavity towards the side close to the brake disc cavity, the tail end of the side, far away from the brake disc cavity, of the, the brake moving block is internally provided with a brake block cavity with an opening close to the brake disc cavity, the brake block cavity is internally connected with a brake block in a sliding fit manner and is connected with a screw rod in a threaded fit manner, and the brake block is close to the end face of the side of the brake disc cavity and is fixedly connected with a brake block which can be abutted against the brake disc.

2. A brake assist device that maintains a maximum braking effect at all times in accordance with claim 1, wherein: the transmission chamber is close to brake disc chamber side end wall normal running fit is connected and is equipped with and keeps away from brake disc chamber side extends to run through the transmission chamber extremely limit the piece intracavity and to being close to brake disc chamber side extends to bearing gear shaft in the lead screw gear intracavity, bearing gear shaft is close to the terminal fixed connection in brake disc chamber side be equipped with lead screw gear engagement's transmission wide gear, transmission wide gear is close to brake disc chamber side end face with lead screw gear chamber is close to fixed connection is equipped with the wide gear torsional spring between the brake disc chamber side end wall, fixed connection is equipped with and is located on the bearing gear shaft one-way bearing in the transmission chamber, the outer terminal surface of one-way bearing is equipped with the bearing gear that can the normal running fit connect, the bearing gear shaft is kept away from the terminal fixed connection in transmission chamber side is equipped with the terminal gear.

3. A brake assist device that maintains a maximum braking effect at all times in accordance with claim 1, wherein: the limiting block is connected with a limiting block in a sliding fit manner, the limiting block is far away from the side end face of the brake disc cavity and the limiting block cavity is far away from the side end wall of the brake disc cavity, a limiting block spring is arranged between the side end wall of the brake disc cavity and the fixed connection, a reset button is arranged in the reset button in a sliding fit manner, the reset button is close to the side end face of the brake disc cavity and the reset button cavity, a reset button spring is arranged between the side end wall of the brake disc cavity and the fixed connection, a reset main magnet capable of corresponding to the reset auxiliary magnet cavity is arranged in the reset button, a reset auxiliary magnet is arranged in the reset auxiliary magnet cavity and connected in a sliding fit manner, and a limiting block pull rope is arranged between the reset auxiliary.

4. A brake assist device that maintains a maximum braking effect at all times in accordance with claim 1, wherein: the sliding fit connection in the wire wheel shaft cavity is provided with a wire wheel shaft which extends into the wire wheel cavity towards the side far away from the brake disc cavity and extends towards the side near the brake disc cavity to the transmission cavity, the spline fit connection on the wire wheel shaft is provided with a wire wheel positioned in the wire wheel cavity, the fixed connection on the wire wheel shaft is provided with a wire wheel gear positioned in the transmission cavity and can be engaged with the bearing gear, the wire wheel gear is close to the side end face of the brake disc cavity and is connected with a wire wheel torsional spring block in a rotating fit manner, the wire wheel torsional spring block is provided with a wire wheel torsional spring with an opening towards the side far away from the brake disc cavity, the wire wheel shaft is close to the side end face of the brake disc cavity and is close to the side end wall of the brake disc cavity, the wire wheel torsional spring block is close to the side end face of the brake disc cavity and is close to the fixed connection between the, and a wire wheel torsion spring stay cord is fixedly connected between the wire wheel torsion spring block and the reset auxiliary magnet.

5. A brake assist device that maintains a maximum braking effect at all times in accordance with claim 1, wherein: the hydraulic block is connected in a sliding fit manner in the hydraulic block cavity, a sliding block which is fixedly connected with the brake moving block and can be abutted against the hydraulic block is connected in a sliding fit manner in the sliding block cavity, a sliding block spring is fixedly connected between the side end face, close to the brake disc cavity, of the sliding block and the side end wall, close to the brake disc cavity, of the sliding block, a butting rod which extends into the butting slider cavity towards the side of the brake disc cavity is fixedly connected with the side end face of the sliding block, the butting slider which can be abutted against the butting rod is connected in a sliding fit manner in the butting slider cavity, a butting slider spring is fixedly connected between the side end face, close to the brake disc cavity, of the butting slider cavity and the side end wall, close to the brake disc cavity, of the butting slider cavity, of the power magnet is connected in a sliding fit, the power magnet cavity right side end wall internal fixed connection is equipped with the electro-magnet, the electro-magnet left end face with fixed connection is equipped with the power magnet spring between the power magnet right side end face, the power magnet cavity is close to brake disc cavity side end wall fixed connection be equipped with can with the trigger block of power magnet contact, power magnet with fixed connection is equipped with the line wheel stay cord between the line wheel.

Technical Field

The invention relates to the field related to automobile maintenance, in particular to a brake auxiliary device capable of always keeping the maximum braking effect.

Background

After the automobile brake block is worn and torn, need trample the brake block of great stroke, just can reach the effect of braking, can make the driver think the brake block by mistake like this and need change to lead to the car maintenance number of times to increase, increase certain economic loss, on the other hand, after the brake block is worn and torn certain degree, need trample the brake block of great distance, can be so because of trampling the distance not enough, and lead to the braking effect can't reach the best effect, thereby probably there is the hidden danger that takes place the traffic accident.

Disclosure of Invention

The invention aims to provide a brake auxiliary device which can always keep the maximum braking effect, and can overcome the defects in the prior art, thereby improving the practicability of equipment.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a brake auxiliary device capable of always keeping the maximum braking effect, which comprises a main box body, wherein a brake disc cavity with a leftward opening is arranged in the main box body, the front side and the rear side of the brake disc cavity are communicated with brake moving block cavities symmetrically arranged by the center of the position of the brake disc cavity, the side, away from the brake disc cavity, of each brake moving block cavity is communicated with a screw rod cavity, the side, away from the brake disc cavity, of each screw rod cavity is communicated with a screw rod gear cavity, the right side of each brake moving block cavity is communicated with a sliding block cavity, the side, away from the brake disc cavity, of each sliding block cavity is communicated with a hydraulic block cavity positioned on the right side of the screw rod gear cavity, the right side of each hydraulic block cavity is communicated with a hydraulic communication cavity, the right side of each hydraulic communication cavity is communicated with a hydraulic main pipeline with a, the right side of the butt sliding block cavity is communicated with a power magnet cavity, the side of the lead screw gear cavity far away from the brake disc cavity is provided with a transmission cavity, the side of the transmission cavity far away from the brake disc cavity is communicated with a wire wheel cavity, the side of the wire wheel cavity far away from the brake disc cavity is communicated with a wire wheel cavity, the side of the transmission cavity far away from the brake disc cavity is provided with a limiting block cavity positioned on the right side of the wire wheel cavity, the side of the wire wheel cavity far away from the brake disc cavity is provided with a reset button cavity with an opening facing away from the brake disc cavity, the right side of the reset button cavity is communicated with a reset auxiliary magnet cavity, the brake disc cavity is connected with a brake disc in a rotating fit manner, the lead screw cavity is connected with a lead screw which extends into the lead screw gear cavity far away from the brake disc cavity and extends into the brake moving block cavity to the side close to the brake disc cavity in a sliding fit, the brake moving block is arranged in the brake moving block cavity and connected with the brake moving block cavity in a sliding fit mode, a brake block cavity with an opening close to the brake disc cavity is formed in the brake moving block, a brake block connected with the lead screw in a threaded fit mode is arranged in the brake block cavity in a sliding fit mode, and a brake block capable of being abutted to the brake disc is fixedly connected to the side end face of the brake disc cavity and is close to the brake block.

On the basis of the technical scheme, the end wall of the transmission cavity close to the side of the brake disc cavity is provided with a bearing gear shaft which extends to the side far away from the brake disc cavity, penetrates through the transmission cavity to the limiting block cavity and extends to the side close to the brake disc cavity to the lead screw gear cavity in a rotationally matched manner, the end of the bearing gear shaft close to the side of the brake disc cavity is fixedly connected with a transmission wide gear meshed with the screw rod gear, a wide gear torsion spring is fixedly connected between the end face of the transmission wide gear close to the side of the brake disc cavity and the end wall of the screw rod gear cavity close to the side of the brake disc cavity, the bearing gear shaft is fixedly connected with a one-way bearing located in the transmission cavity, a bearing gear capable of being connected in a rotating fit mode is arranged on the outer end face of the one-way bearing, and an end face gear is fixedly connected to the tail end of the side, far away from the transmission cavity, of the bearing gear shaft.

On the basis of the technical scheme, the limiting blocks are connected in a sliding fit mode and provided with limiting blocks, the limiting blocks are far away from the side end face of the brake disc cavity and the limiting blocks are far away from the side end wall of the brake disc cavity, limiting block springs are fixedly connected and provided with limiting block springs, a reset button is connected in a sliding fit mode and provided with a reset button, the reset button is close to the side end face of the brake disc cavity and close to the reset button cavity, the reset button is fixedly connected and provided with a reset button spring, main reset magnets corresponding to the reset auxiliary magnet cavities are arranged in the reset button, auxiliary reset magnets are connected in a sliding fit mode and provided with reset auxiliary magnets, and the reset auxiliary magnets are fixedly connected and provided with limiting block pull ropes.

On the basis of the technical scheme, the sliding fit connection in the wire wheel shaft cavity is provided with a wire wheel which extends to the wire wheel cavity towards the side far away from the brake disc cavity and extends to the side near the brake disc cavity, the spline fit connection on the wire wheel shaft is provided with a wire wheel positioned in the wire wheel cavity, the fixed connection on the wire wheel shaft is provided with a wire wheel gear positioned in the transmission cavity and can be engaged with the bearing gear, the wire wheel gear is close to the side end face of the brake disc cavity and is connected with a wire wheel torsion spring block in a rotating fit manner, the wire wheel torsion spring block is provided with a wire wheel torsion spring with an opening towards the wire wheel cavity far away from the brake disc cavity, the wire wheel shaft is close to the side end face of the brake disc cavity and is fixedly connected with a wire wheel torsion spring between the side end wall of the brake disc cavity and the transmission cavity is close to the side end wall of the brake disc cavity, and a wire wheel torsion spring stay cord is fixedly connected between the wire wheel torsion spring block and the reset auxiliary magnet.

On the basis of the technical scheme, a hydraulic block is arranged in the hydraulic block cavity in a sliding fit connection manner, a sliding block which is fixedly connected with the brake moving block and can be abutted against the hydraulic block is arranged in the sliding block cavity in a sliding fit connection manner, a sliding block spring is fixedly connected between the side end face of the sliding block close to the brake disc cavity and the side end wall of the sliding block cavity close to the brake disc cavity, an abutting rod which extends into the abutting slider cavity close to the brake disc cavity is fixedly connected to the side end face of the sliding block close to the brake disc cavity, an abutting slider which can be abutted against the abutting rod is arranged in the abutting slider cavity in a sliding fit connection manner, an abutting slider spring is fixedly connected between the side end face of the abutting slider close to the brake disc cavity and the side end wall of the abutting slider cavity close to the brake disc cavity, and a power magnet is arranged in the power magnet, the power magnet cavity right side end wall internal fixed connection is equipped with the electro-magnet, the electro-magnet left end face with fixed connection is equipped with the power magnet spring between the power magnet right side end face, the power magnet cavity is close to brake disc cavity side end wall fixed connection be equipped with can with the trigger block of power magnet contact, power magnet with fixed connection is equipped with the line wheel stay cord between the line wheel.

The invention has the beneficial effects that: this device makes the butt pole act on the butt slider through trampling the brake block to this degree of judging the brake block by wearing and tearing, after being worn and torn to certain thickness, trample the brake block and can make the brake block move certain distance inwards as power through power magnet, make it only need trample less distance and can reach the best braking effect always, reducible driver like this carries out the car maintenance number of times because of the misjudgement, also avoided simultaneously because of trampling the traffic accident that the distance is not enough and leads to.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of a brake assist device of the present invention, which can always maintain the maximum braking effect.

Fig. 2 is a schematic sectional view of the structure in the direction of a-a in fig. 1.

Fig. 3 is a schematic sectional view of fig. 1 taken along the direction B-B.

Fig. 4 is an enlarged schematic view of the structure at C in fig. 3.

Fig. 5 is an enlarged schematic view of fig. 3 at D.

FIG. 6 is an enlarged view of the structure at E in FIG. 3

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The brake auxiliary device capable of always keeping the maximum braking effect described in conjunction with fig. 1-6 comprises a main box 10, a brake disc cavity 64 with a leftward opening is provided in the main box 10, brake moving block cavities 12 symmetrically arranged at the center of the position of the brake disc cavity 64 are communicated with the front and rear sides of the brake disc cavity 64, a screw rod cavity 51 is communicated with the side of the brake moving block cavity 12 away from the brake disc cavity 64, a screw rod gear cavity 52 is communicated with the side of the screw rod cavity 51 away from the brake disc cavity 64, a sliding block cavity 29 is communicated with the right side of the brake moving block cavity 12, a hydraulic block cavity 24 on the right side of the screw rod gear cavity 52 is communicated with the side of the sliding block cavity 29 away from the brake disc cavity 64, a hydraulic communicating cavity 25 is communicated with the right side of the hydraulic block cavity 24, and a main hydraulic pipeline 30 with a forward opening is communicated with the right side of, sliding block chamber 29 is close to brake disc chamber 64 side intercommunication is equipped with butt slider chamber 58, butt slider chamber 58 right side intercommunication is equipped with power magnet chamber 63, lead screw gear chamber 52 is kept away from brake disc chamber 64 side is equipped with transmission chamber 47, transmission chamber 47 is kept away from brake disc chamber 64 side intercommunication is equipped with line wheel chamber 65, line wheel chamber 65 is kept away from brake disc chamber 64 side intercommunication is equipped with line wheel chamber 38, transmission chamber 47 is kept away from brake disc chamber 64 side is equipped with and is located limiting block chamber 39 on line wheel chamber 38 right side, line wheel chamber 38 is kept away from brake disc chamber 64 side is equipped with the opening and is to keeping away from reset button chamber 18 of brake disc chamber 64 side, reset button chamber 18 right side intercommunication is equipped with vice magnet chamber 21 that resets, brake disc chamber 64 internal rotation fit connection is equipped with brake disc 11, the connection of sliding fit in lead screw chamber 51 is equipped with and keeps away from brake disc chamber 64 side extends lead screw gear chamber 52 is interior and is inwards close to brake The side of the disc cavity 64 extends to a lead screw 50 in the brake moving block cavity 12, the lead screw 50 is far away from the tail end of the side of the brake disc cavity 64 and is fixedly connected with a lead screw gear 53, the lead screw 50 is connected and is provided with a brake moving block 16 which is positioned in the brake moving block cavity 12 and is connected with the brake moving block cavity 12 in a sliding fit manner, the brake moving block 16 is internally provided with an opening which is close to the brake block cavity 15 of the brake disc cavity 64, the brake block cavity 15 is internally provided with a brake block 14 which is connected with the lead screw 50 in a threaded fit manner, and the brake block 14 is close to the end face of the side of the brake disc cavity 64 and is fixedly connected with a brake block 13 which can be abutted against the brake disc 11.

In addition, in one embodiment, the transmission cavity 47 is provided with a bearing gear shaft 45 which extends through the transmission cavity 47 to the limiting block cavity 39 and extends to the screw rod gear cavity 52 to the side close to the brake disc cavity 64 in a rotationally-matched manner near to the side end wall of the brake disc cavity 64, the bearing gear shaft 45 is provided with a transmission wide gear 54 engaged with the screw rod gear 53 in a fixedly-connected manner near to the end of the side close to the brake disc cavity 64, a wide gear torsion spring 55 is fixedly connected between the end surface of the transmission wide gear 54 near to the side of the brake disc cavity 64 and the side end wall of the screw rod gear cavity 52 near to the brake disc cavity 64, a one-way bearing 46 located in the transmission cavity 47 is fixedly connected to the bearing gear shaft 45, and a bearing gear 44 capable of being connected in a rotationally-matched manner is arranged on the outer end surface of the one-way bearing 46, the end of the bearing gear shaft 45 far away from the transmission cavity 47 is fixedly connected with an end face gear 43.

In addition, in one embodiment, a limiting block 42 is arranged in the limiting block cavity 39 in a sliding fit connection mode, a limiting block spring 41 is arranged between the limiting block 42 and the limiting block cavity 39, the limiting block is far away from the side end wall of the brake disc cavity 64, a reset button 19 is arranged in the reset button cavity 18 in a sliding fit connection mode, a reset button spring 17 is fixedly connected between the reset button 19 and the side end wall of the reset button cavity 18, the side end wall of the reset button cavity is close to the side end wall of the brake disc cavity 64, a reset main magnet 20 corresponding to the reset auxiliary magnet cavity 21 is arranged in the reset button 19, a reset auxiliary magnet 22 is arranged in the reset auxiliary magnet cavity 21 in a sliding fit connection mode, and a limiting block pull rope 40 is fixedly connected between the reset auxiliary magnet 22 and the limiting block 42.

In addition, in one embodiment, the spool chamber 65 is provided with a spool 36 extending away from the side of the brake disc chamber 64 and extending into the spool chamber 38 and extending close to the side of the brake disc chamber 64 and extending into the transmission chamber 47 in a sliding fit manner, the spool 36 is provided with a spool 37 located in the spool chamber 38 in a spline fit manner, the spool 36 is provided with a spool gear 34 located in the transmission chamber 47 and capable of meshing with the bearing gear 44 in a fixed connection manner, the spool gear 34 is close to the side end face of the brake disc chamber 64 in a rotating fit manner and provided with a spool torsion spring block 32, the spool torsion spring block 32 is provided with a spool torsion spring chamber 33 having an opening away from the brake disc chamber 64, the spool 36 is close to the side end face of the brake disc chamber 64 and the spool torsion spring chamber 33 is close to the side end wall of the brake disc chamber 64 in a fixed connection manner and provided with a spool torsion spring 48, the reel torsion spring block 32 is close to the end face of the side of the brake disc cavity 64 and the transmission cavity 47 is close to the end wall of the side of the brake disc cavity 64, a reel spring 31 is fixedly connected between the reel torsion spring block 32 and the auxiliary reset magnet 22, and a reel torsion spring pull rope 49 is fixedly connected between the reel torsion spring block 32 and the auxiliary reset magnet 22.

In addition, in one embodiment, the hydraulic block cavity 24 is provided with a hydraulic block 23 in a sliding fit connection, the sliding block cavity 29 is provided with a sliding block 26 in a sliding fit connection and can be abutted against the hydraulic block 23, the sliding block 26 is provided with a sliding block spring 28 in a sliding fit connection between the end surface of the sliding block 26 close to the side of the brake disc cavity 64 and the end wall of the sliding block cavity 29 close to the side of the brake disc cavity 64, the sliding block 26 is provided with an abutting rod 27 extending into the abutting slider cavity 58 close to the side of the brake disc cavity 64 in a fixed connection, the abutting slider cavity 58 is provided with an abutting slider 57 in a sliding fit connection and can be abutted against the abutting rod 27, the abutting slider 57 is provided with an abutting slider spring 56 in a fixed connection between the end surface of the abutting slider cavity 57 close to the side of the brake disc cavity 64 and the end wall of the abutting slider cavity 58 close to the side of, sliding fit connects in power magnet chamber 63 and is equipped with power magnet 59, fixed connection is equipped with electro-magnet 62 in the power magnet chamber 63 right side wall, electro-magnet 62 left end face with fixed connection is equipped with power magnet spring 61 between the power magnet 59 right end face, power magnet chamber 63 is close to brake disc chamber 64 side end wall fixed connection be equipped with can with the trigger block 60 of power magnet 59 contact, power magnet 59 with fixed connection is equipped with line wheel stay cord 35 between the line wheel 37.

The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.

As shown in fig. 1 to 6, in the initial state of the apparatus of the present invention, the bearing gear 44 is engaged with the pulley gear 34, the restricting block 42 is engaged with the face gear 43, and the power magnet spring 61 is in a compressed state;

sequence of mechanical actions of the whole device:

when the brake is stepped, hydraulic oil enters the hydraulic block cavity 24 from the main hydraulic pipe 30 through the hydraulic communicating cavity 25, then the sliding block 26 is pressed through the hydraulic block 23 to move towards the side close to the brake disc cavity 64 by overcoming the thrust of the sliding block spring 28, the sliding block 26 moves towards the side close to the brake disc cavity 64, the brake block 14 is driven to move towards the side close to the brake disc cavity 64 by the brake moving block 16, so that the brake block 13 is contacted with the brake disc 11, the braking effect is achieved, the abutting rod 27 is driven to move towards the side close to the brake disc cavity 64 by the sliding block 26, and the abutting rod 27 can be contacted with the abutting sliding block 57 and overcome the abutting sliding block spring 56 to move towards the side close to the brake disc cavity 64;

when the brake pad 13 is worn to a certain degree, the brake pad needs to be stepped on for a certain distance to achieve the purpose of braking, so that the abutting rod 27 abuts against the abutting slide block 57 and moves to the side close to the brake disc cavity 64 until the power magnet 59 is not limited, at the moment, the power magnet 59 moves leftwards under the action of the elastic force of the power magnet spring 61 until the abutting slide block 57 is limited to reset, the power magnet 59 moves leftwards to pull the wire wheel 37 to rotate through the wire wheel pull rope 35, the wire wheel 37 rotates to drive the wire wheel gear 34 to rotate through the wire wheel shaft 36, the wire wheel gear 34 rotates to drive the one-way bearing 46 to rotate through the bearing gear 44, the one-way bearing 46 rotates to drive the bearing gear shaft 45 to rotate, the bearing gear shaft 45 rotates to drive the end gear 43 and the transmission wide gear 54 to rotate, the transmission wide gear 54 rotates to drive the screw rod gear 53 to rotate, therefore, the transmission wide gear 54 cannot rotate reversely, the transmission wide gear 54 rotates to drive the screw rod 50 to rotate through the screw rod gear 53, the screw rod 50 rotates to drive the brake pad 13 to rotate through the brake pad block 14, and the purpose of braking can be achieved by only stepping on a small distance by enabling the brake pad 13 to move a little bit close to the brake disc 11, so that a driver can save more labor, and meanwhile, the maximum braking effect can be achieved all the time by only stepping on a little distance;

the power magnet 59 moves leftwards and is simultaneously separated from the contact of the trigger block 60, the trigger block 60 sends a signal to enable the electromagnet 62 to be electrified regularly, the power magnet 59 is adsorbed to overcome the thrust of the power magnet spring 61 to move rightwards, the abutting slide block 57 resets under the action of the elastic force of the abutting slide block spring 56, the reel shaft 36 resets under the action of the torsion force of the reel torsion spring 48, and the reel gear 34 cannot drive the one-way bearing 46 to rotate through the bearing gear 44 until the brake pad 13 is about to be completely ground and replaced;

after the brake pad 13 is replaced, the reset button 19 needs to be pressed to overcome the thrust of the reset button spring 17 to drive the reset main magnet 20 to correspond to the reset auxiliary magnet cavity 21, the reset main magnet 20 adsorbs the reset auxiliary magnet 22 to move leftwards, the reset auxiliary magnet 22 moves leftwards to pull the reel torsion spring block 32 to move to the side close to the brake pad cavity 64 by the reel torsion spring pull rope 49 to overcome the reel spring 31, so that the reel gear 34 is disengaged from the bearing gear 44, meanwhile, the reset auxiliary magnet 22 moves leftwards to pull the limiting block 42 to move to the side far from the brake pad cavity 64 by the limiting block pull rope 40 to overcome the limiting block spring 41, so that the limiting block 42 is disengaged from the end face gear 43, at the moment, the transmission wide gear 54 rotates reversely under the torque force of the wide gear torsion spring 55, the transmission wide gear 54 rotates reversely to drive the brake pad block 14 to move to the side far from the brake pad cavity 64, so that a new, then, the reset button 19 is released, the reel gear 34 is reset by the elastic force of the reel spring 31 and the stopper spring 41, and the stopper 42 is reset.

The invention has the beneficial effects that: this device makes the butt pole act on the butt slider through trampling the brake block to this degree of judging the brake block by wearing and tearing, after being worn and torn to certain thickness, trample the brake block and can make the brake block move certain distance inwards as power through power magnet, make it only need trample less distance and can reach the best braking effect always, reducible driver like this carries out the car maintenance number of times because of the misjudgement, also avoided simultaneously because of trampling the traffic accident that the distance is not enough and leads to.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.