CN219529643U - Brake device with stable braking - Google Patents

Abstract

The utility model relates to the technical field of braking and discloses a braking device with stable braking, which comprises a clamp body, a piston and a rotary table, wherein a passive friction plate is arranged at the jaw of the clamp body, an active friction plate opposite to the passive friction plate is arranged at the end part of the piston, an automatic compensation cavity is arranged on the clamp body, the rotary table is positioned in the automatic compensation cavity and is rotationally connected with the automatic compensation cavity, an active extrusion groove is formed in the end surface of the rotary table, the active extrusion groove comprises a spherical groove and a spiral guide groove, the spiral guide groove comprises a first groove close to the spherical groove and a second groove far away from the spherical groove, and the gradient of the first groove is larger than that of the second groove. So as to realize the effect of rapidly eliminating braking clearance in the early stage of braking and stably and continuously braking in the later stage.

Description

Brake device with stable braking

Technical Field

The utility model relates to the technical field of braking, in particular to a braking device with stable braking.

Background

At present, in order to overcome the defects of mechanical automatic compensators such as electric vehicles and motorcycles in the market, the applicant applies for an automatic compensating mechanical brake device with the application number 2017218679158 in the year 12 and 27 in 2017. The patent aims at solving the problem that the existing automatic compensation mechanical disc brake is troublesome in piston resetting, dismounting and mounting. The pushing surface of the ball seat of the existing disc brake device is generally in a single inclination angle form, so that the brake speed of the brake push rod fed in the whole brake process is fixed, but for practical use, quick braking is often needed in the early stage of stepping on the brake, the brake is stably and continuously carried out in the later stage of stepping on the brake, the brake effect is maintained, and the technical scheme of the applicant at the moment cannot solve the problems.

Disclosure of Invention

The utility model aims to provide a brake device with stable braking so as to realize the effects of rapid braking in the early stage of braking and stable and continuous braking in the later stage.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a brake equipment that braking stability is good, including the pincers body, piston and carousel, the department of keeping silent of the pincers body installs the passive friction disc, the tip of piston is installed the initiative friction disc relative with the passive friction disc, be equipped with the automatic compensation chamber on the pincers body, the carousel is located the automatic compensation intracavity and rotates with the automatic compensation chamber to be connected, it has initiative extrusion groove to open on the terminal surface of carousel, initiative extrusion groove includes ball groove and spiral guide way, the spiral guide way includes the first groove that is close to the ball groove and keeps away from the second groove of ball groove, the slope of first groove is greater than the slope of second groove.

The working principle and the beneficial effects of the scheme are as follows:

in the prior art, when a brake pedal is stepped on during braking, a rear axle connecting rod drives a rocker to rotate, and the rocker rotates to drive a turntable to rotate, so that an active friction plate and a passive friction plate are driven to clamp for braking. In the technical scheme, the driving extrusion groove on the turntable extrudes the rolling bodies, the rolling bodies rotate along the driving extrusion groove, the first groove is rolled on the spherical groove, the second groove is rolled on the spherical groove, the turntable is driven to axially move, and the rotating shaft rotates to drive the piston to move. The spiral guide way in this technical scheme includes first groove and second groove, the first groove slope that the spiral guide way is close to the ball groove is steeper, the second groove slope that the ball groove was kept away from to the spiral guide way is slower, on the one hand can promote the brake feed rate in front of the brake by a wide margin, the speed that can drive carousel axial displacement in the first groove of steeper is rolled to the rolling element is faster, wait that the rolling element rolls to the second groove, the speed has fallen most this moment, the user can the accurate regulation of in-service use condition specifically need control what speed, the security of brake has been promoted. The technical scheme can ensure that the brake device has good braking effect, effectively improves the braking efficiency of the clamp body, and can meet the use requirement of rapid braking of most electric vehicles, motorcycles and tricycles on the market, and the working efficiency is stable.

Preferably, as a modification, the bottom surface of the first groove is in smooth transition with the spherical groove and the second groove is in smooth transition with the first groove along the tangential direction of the spherical groove.

The beneficial effects are as follows: the bottom surface in first groove is along the tangential direction in ball groove and smooth transition, and the slope in first groove is steeper, and above-mentioned setting can promote the stability and the travelling comfort in the braking process, and the tangential direction in bottom surface in first groove for ball groove can make the rolling element roll process smoother, can not appear obvious shake sense, has promoted the security of whole braking process when having guaranteed quick braking.

Preferably, as a modification, the angles between the first groove and the second groove and the end face of the turntable are a first inclination angle and a second inclination angle, respectively, and the angle of the first inclination angle is in the range of 15-50 °. The beneficial effects are as follows: the angle setting of first inclination can realize braking early stage quick braking and guarantee safety simultaneously in above-mentioned within range, if the angle setting is too big, the power that gives the rocking arm also needs the multiple increase, has increased rocking arm pivoted resistance for braking process is unsmooth, influences the braking effect, also can lead to even rocking arm turned angle less in addition, and screw rod forward progress is more makes ordinary brake become sudden braking, can cause certain danger, therefore the angle of first inclination need be limited in reasonable range.

Preferably, as a modification, the angle of the first inclination angle is 30 °.

Preferably, as a modification, the second inclination angle is in the range of 5-40 °.

The beneficial effects are as follows: at the later stage of braking, the brake pad begins to clamp the brake disc when the rolling bodies are positioned in the second groove, the braking speed is reduced, a user can judge to what degree the rocker arm is rotated according to the use condition so as to adjust the braking speed, meanwhile, the second inclination angle range is smaller, the force used by the user is also smaller, the operation is labor-saving, and the brake pad has good braking effect.

Preferably, as a modification, the second inclination angle is 15 °.

Preferably, as an improvement, the automatic compensation cavity is further provided with an extrusion plate, and the extrusion plate is further provided with a passive extrusion groove matched with the active extrusion groove, wherein the passive extrusion groove has the same structure as the active extrusion groove but is opposite in arrangement direction.

The beneficial effects are as follows: the direction of arrangement of the passive extrusion groove is opposite to that of the active extrusion groove, namely the directions of the spiral guide grooves of the active extrusion groove and the passive extrusion groove are opposite, and through the arrangement, when the screw rod advances, the travel distance of the screw rod is twice of that of the original screw rod, and the speed of the brake is further increased.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present utility model;

FIG. 2 is a schematic view showing the internal structure of embodiment 1 of the present utility model;

FIG. 3 is an exploded view showing the internal structure in one direction of embodiment 1 of the present utility model;

FIG. 4 is an exploded view showing the internal structure of embodiment 1 of the present utility model in another direction;

FIG. 5 is a side view of an active extrusion slot according to example 1 of the present utility model;

FIG. 6 is a partial A-A cross-sectional view of FIG. 5;

fig. 7 is a schematic view showing the internal structure of embodiment 2 of the present utility model.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the pliers comprise a pliers body 1, a rocker arm 2, a screw 3, a rotating shaft 4, a piston 5, a driven friction plate 6, an active friction plate 7, a rotary table 8, an active extrusion groove 9, a spherical groove 10, a first groove 11, a second groove 12, an elastic reset piece 13, an extrusion plate 14, a driven extrusion groove 15 and a rolling body 16.

Example 1

The embodiment 1 is basically shown in fig. 1-5, and a brake device with good braking stability is shown in fig. 1 and 2, and comprises a caliper body 1, a rocker arm 2, a screw rod 3, a rotating shaft 4 and a piston 5, wherein a passive friction plate 6 is fixedly arranged at a jaw of the caliper body 1, an active friction plate 7 opposite to the passive friction plate 6 is fixedly arranged at the end part of the piston 5, and an automatic compensation cavity is arranged on the caliper body 1. As shown in fig. 3, the rotating shaft 4 passes through the automatic compensation cavity, one end of the rotating shaft is detachably connected with the rocker arm 2 through a bolt, the other end of the rotating shaft 4 is provided with a rotary disc 8, the screw 3 and the rotary disc 8 are both positioned in the automatic compensation cavity, one end of the screw 3 abuts against the rotary disc 8, the other end of the screw 3 is in threaded connection with the piston 5, the piston 5 is in sliding connection with the automatic compensation cavity, the movement of the screw 3 can drive the piston 5 to move, an elastic reset piece 13 is sleeved on the rotating shaft 4, the elastic reset piece 13 can drive the rocker arm 2 to return to the original position when braking is not needed, and the elastic reset piece 13 is positioned between the clamp body 1 and the rocker arm 2.

As shown in fig. 3 and 4, the end surface of the turntable 8, which is close to the rocker arm 2, is provided with a plurality of arc-shaped active extrusion grooves 9 which are uniformly distributed on the same circumference, and the active extrusion grooves 9 which are uniformly distributed in the circumferential direction can lead the stress of the turntable 8 to be balanced, thus ensuring the stable work of the turntable 8; the rolling bodies 16 are arranged in the driving extrusion grooves 9, the rolling bodies 16 in the embodiment are steel balls, the steel balls are high in hardness and can bear larger stress and are not easy to deform, the rolling bodies 16 can rotate around the center of the rotary table 8, the extrusion plates 14 are further arranged in the automatic compensation cavity, the extrusion plates 14 are opposite to the rotary table 8, the passive extrusion grooves 15 matched with the driving extrusion grooves 9 are further arranged on the extrusion plates 14, the passive extrusion grooves 15 are identical in structure with the driving extrusion grooves 9 but opposite in arrangement direction, when the screw 3 advances, the travel distance of the screw 3 is twice that of the original screw, and the speed during braking is further increased.

As shown in fig. 5, the active extrusion groove 9 includes a spherical groove 10 and a spiral guide groove including a first groove 11 and a second groove 12, the first groove 11 near the spherical groove 10 has a steeper gradient, and the second groove 12 away from the spherical groove 10 has a shallower gradient. The bottom surface of the first groove 11 is in smooth transition with the spherical groove 10 and the second groove 12 and the first groove 11 along the tangential direction of the spherical groove 10, so that the rolling of the rolling bodies 16 is smoother, obvious shaking sense can not occur, and the safety of the whole braking process is improved while the rapid braking is ensured; as shown in fig. 6, the angles between the first grooves 11 and the second grooves 12 and the end face of the turntable 8 are a first inclination angle and a second inclination angle, respectively, the angle range of the first inclination angle is 15 to 50 °, 30 ° in the present embodiment, and the angle range of the second inclination angle is 5 to 40 °, 15 ° in the present embodiment.

The specific implementation process is as follows:

when the brake pedal is stepped on, the rear bridge connecting rod drives the rocker arm 2 to rotate, the rocker arm 2 rotates to drive the turntable 8 to rotate, the driving extrusion groove 9 on the turntable 8 extrudes the rolling bodies 16, the rolling bodies 16 rotate along the driving extrusion groove 9, the first groove 11 rolls on the spherical groove 10 and the second groove 12 rolls on the spherical groove 10, the turntable 8 is driven to axially move, one end of the screw rod 3 abuts against the turntable 8, the other end of the screw rod 3 is in threaded connection with the piston 5, the piston 5 is driven to slide through the screw rod 3, and then the driving friction plate 7 and the driven friction plate 6 are driven to clamp for braking. In this embodiment, the angle of the first inclination angle is larger, so that the brake feeding speed in the front period of the brake can be greatly improved, meanwhile, the safety is ensured, if the angle is too large, the force applied to the rocker arm 2 needs to be multiplied, the rotating resistance of the rocker arm 2 is increased, the braking process is not smooth, the braking effect is affected, in addition, even if the rotating angle of the rocker arm 2 is smaller, the screw 3 has more forward travel, so that the ordinary brake becomes the sudden brake, and a certain danger is caused; the second inclination angle is smaller, and the braking speed is reduced by a large part at the moment, so that a user can accurately adjust the subsequent braking speed according to the actual use condition, labor is saved, and the braking stability is improved.

Example 2

Embodiment 2 is shown in fig. 7, and is different in that the elastic restoring member 13 shown in fig. 7 is a compression spring, two ends of the compression spring are provided with bending portions, as shown in fig. 7, one bending portion close to the clamp body 1 is inserted into the clamp body 1, corresponding blind holes are formed in opposite positions on the clamp body 1 to accommodate the bending portions, and the bending portion close to the rocker arm 2 abuts against one side of the rocker arm 2.

The specific implementation process is as follows: when the rocker arm 2 rotates, the distance between the rocker arm 2 and the clamp body 1 is reduced, the pressure spring receives radial pressure, at the moment, the bending part receives axial pressure due to the rotation of the rocker arm 2, the rocker arm 2 receives radial and axial acting force after braking is completed, and the rocker arm 2 can be reset in a short time, so that the reset efficiency of the rocker arm 2 is higher than that of the simple use of the pressure spring.

The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (7)

1. The utility model provides a brake equipment that braking is stable, includes the pincers body, piston and carousel, and the department of keeping silent of the pincers body installs passive friction piece, and the initiative friction piece relative with passive friction piece is installed to the tip of piston, is equipped with the automatic compensation chamber on the pincers body, and the carousel is located the automatic compensation intracavity and rotates with the automatic compensation chamber and be connected, its characterized in that: an active extrusion groove is formed in the end face of the rotary table and comprises a spherical groove and a spiral guide groove, the spiral guide groove comprises a first groove close to the spherical groove and a second groove far away from the spherical groove, and the gradient of the first groove is larger than that of the second groove.

2. A brake stabilizing brake assembly according to claim 1, wherein: the bottom surface of the first groove is in smooth transition with the spherical groove and the second groove and the first groove along the tangential direction of the spherical groove.

3. A brake stabilizing brake assembly according to claim 2, wherein: the angles between the first groove and the end face of the turntable and the angles between the second groove and the end face of the turntable are respectively a first inclination angle and a second inclination angle, and the angle range of the first inclination angle is 15-50 degrees.

4. A brake stabilizing brake assembly according to claim 3, wherein: the angle of the first inclination angle is 30 °.

5. The brake stabilizing brake assembly of claim 4, wherein: the second inclination angle is in the range of 5-40 deg..

6. A brake stabilizing brake assembly according to claim 5, wherein: the second inclination angle is 15 °.

7. The brake stabilizing brake assembly of claim 6, wherein: the automatic compensation cavity is also internally provided with an extrusion plate, and the extrusion plate is also provided with a passive extrusion groove matched with the active extrusion groove, and the passive extrusion groove has the same structure as the active extrusion groove but opposite arrangement direction.