Brake and mechano-electronic braking system thereof

Abstract

The invention relates to the field of brakes, and discloses a brake and a mechano-electronic braking system. A caliper body and a bracket are connected through a pin shaft and an external connecting rubber ring; a first connecting lug is arranged on the support, a second connecting lug is arranged on the clamp body, a first inserting hole is formed in the first connecting lug, a second inserting hole is formed in the second connecting lug, and the pin shaft is sequentially inserted into the first inserting hole and the second inserting hole. The connecting rubber ring comprises a middle deformation part, a first connecting part with one end connected with the pin shaft and a second connecting part with the other end connected with the support, the second connecting part comprises a guide sleeve of an inner ring and a connecting sleeve of an outer ring, the guide sleeve is inserted into the first inserting hole, and the pin shaft extends to the bottom of the first inserting hole after being inserted into the guide sleeve; the opening portion of the first jack is located between the guide sleeve and the connecting sleeve, and the connecting sleeve is installed on the outer side of the opening portion of the first jack. The brake has the advantages of high strength, light weight, no noise, high safety and the like.

Description

Technical Field

[0001] The invention relates to the field of brakes, in particular to brakes and mechanical electronic brake systems thereof. Background Art

[0002] CN108825686A discloses an electromechanical brake, the pin of which may get stuck, make noise and have problems with stable movement during long-term operation, and the rubber ring structure is inconvenient to assemble and has average protection performance. Secondly, the existing brake caliper body is generally designed, and no optimization is made in terms of weight and strength. Summary of the invention

[0003] The present invention aims at the shortcomings of the prior art and provides a brake and a mechanical electronic brake system thereof.

[0004] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0005] The brake comprises a caliper body and a bracket, wherein the caliper body and the bracket are connected via a pin shaft and an external connecting rubber ring, and the caliper body can slide relative to the bracket via the pin shaft; a first connecting ear is arranged on the bracket, and a second connecting ear is arranged on the caliper body, a first plug hole is arranged on the first connecting ear, and a second plug hole is arranged on the second connecting ear, and the pin shaft is inserted into the first plug hole and the second plug hole in sequence;

[0006] The connecting rubber ring includes a deformation portion in the middle, a connecting portion 1 connected to a pin shaft at one end, and a connecting portion 2 connected to a bracket at the other end. The connecting portion 2 includes an inner ring guide sleeve and an outer ring connecting sleeve. The guide sleeve is inserted into the first socket. The pin shaft is inserted into the guide sleeve and extends to the bottom of the first socket. The mouth of the first socket is located between the guide sleeve and the connecting sleeve, and the connecting sleeve is installed on the outside of the mouth of the socket.

[0007] Preferably, the pin shaft includes a fixing pin on the upper side and a connecting pin on the lower side, one end of the connecting pin abuts against the end surface where the lower side opening of the second socket is located and the connecting pin is inserted into the first socket; the fixing pin passes through the second socket and is threadedly connected to the upper part of the connecting pin; an annular groove is provided at the lower end of the connecting pin, and a guide member is installed in the groove, and the guide member is a rubber member.

[0008] Preferably, a plurality of annular grooves are provided on the outer side surface of the guide member.

[0009] Preferably, a limiting ring 1 is provided at the upper end of the connecting pin, the lower end face of the limiting ring 1 is an inclined surface, the inner side face of the upper end of the connecting part 1 is provided with an assembly groove 1 which matches the shape of the limiting ring 1, and the limiting ring 1 is assembled in the assembly groove 1; the mouth of the socket 1 is a pipe sleeve structure, the outer side face of the socket 1 is provided with an assembly groove 2, the lower end face of the assembly groove 2 is an inclined surface from the inside to the outside, and the inner ring surface of the connecting sleeve is provided with a limiting ring 2 which matches the shape of the assembly groove 2.

[0010] Preferably, an exhaust groove is provided on the side surface of the connecting pin along the circumferential direction, and the exhaust groove is connected to the interior of the connecting sleeve.

[0011] Preferably, an arc-shaped opening is provided in the middle position of the bottom of the pliers body, and support claws are formed on both sides of the arc-shaped opening at the bottom of the pliers body, and the bottom surface of the support claw is an arc-shaped inclined surface from the bottom to the top, so that the support claw forms a shape that is thin on the top and thick on the bottom; the part of the bracket under the bracket claw is a support frame, and the support frame has an arc-shaped structure as a whole; the protruding direction of the arc-shaped structure of the support frame is the same as the protruding direction of the arc-shaped opening, and the arc-shaped opening is a U-shaped structure.

[0012] Preferably, the brake block includes a brake block 1 that cooperates with the piston and a brake block 2 that is supported by the caliper body. The brake block 1 includes a lining block and a friction block. An improvement block extends outward from the middle of the lining block near the back side of the caliper. The improvement block is arc-shaped.

[0013] Preferably, the caliper body includes a drive housing, in which a transmission mechanism is arranged, the transmission mechanism includes a transmission screw in the middle and a transmission piston that cooperates with the transmission screw on the outside, an axial limiting groove is arranged on the transmission piston, a limiting pin is installed on the drive housing, and the limiting pin extends into the limiting groove; a limiting block 1 is arranged on the transmission screw, and a limiting block 2 is arranged on the transmission piston, and the limiting block 1 and the limiting block 2 are at least partially located in the same plane, and when the limiting block 1 and the limiting block 2 collide with each other, the transmission screw stops rotating.

[0014] Preferably, an MGU actuator is provided on the upper part of the drive housing, the output end of the actuator is a spline structure, the upper end of the transmission screw is provided with a spline groove, the spline structure is inserted into the spline groove, and the number of teeth of the spline is 15.

[0015] Compared with the prior art, this solution has the following advantages: the vacuum booster has precise control, fast performance release, and is conducive to the idle stroke design of the brake master cylinder. At the same time, the designed housing will not cause excessive extrusion on the diaphragm, ensuring its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the overall structure of the device.

[0017] Figure 2 for Figure 1 Top view of the .

[0018] Figure 3 for Figure 2 sectional view of .

[0019] Figure 4 yes Figure 3 A partial enlarged view of .

[0020] Figure 5It is a schematic diagram of the three-dimensional structure of the device.

[0021] Figure 6 yes Figure 1 Rear view of.

[0022] Figure 7 yes Figure 6 sectional view of .

[0023] Figure 8 It is a structural diagram of the transmission structure.

[0024] Fig. 9 It is a schematic diagram of the structure of the pin connecting the rubber ring.

[0025] Fig.10 It is a schematic diagram of the structure of the connecting rubber ring.

[0026] Fig.11 It is a structural schematic diagram of the first brake pad.

[0027] The technical names of the accompanying drawings are: 1-caliper body, 2-bracket, 3-pin shaft, 4-connecting rubber ring, 5-first connecting ear, 6-second connecting ear, 7-jack one, 8-jack two, 9-deformation part, 10-connecting part one, 11-connecting part two, 12-guide sleeve, 13-connecting sleeve, 14-fixing pin, 15-connecting pin, 16-notch, 17-guide, 18-annular groove, 19-limiting ring one, 20-limiting ring two, 21-assembly groove one, 22-assembly groove two, 23-exhaust groove, 24-groove structure, 25-arc mouth, 26-support claw, 27-brake block one, 28-brake block two, 29-lining block, 30-improvement block, 31-transmission screw, 32-transmission piston, 33-limiting nail, 34-limiting block one, 35-limiting block two, 36-spline groove, 37-spline structure. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] Example 1

[0030] The brake comprises a caliper body 1 and a bracket 2, wherein the caliper body 1 and the bracket 2 are connected via a pin shaft 3 and an external connecting rubber ring 4, and the caliper body 1 can slide relative to the bracket 2 via the pin shaft 3; a first connecting ear 5 is provided on the bracket 2, and a second connecting ear 6 is provided on the caliper body 1, a socket 1 7 is provided on the first connecting ear 5, and a socket 2 8 is provided on the second connecting ear 6, and the pin shaft 3 is inserted into the socket 1 7 and the socket 2 8 in sequence; wherein the bracket 2 is mounted on the vehicle body, the caliper body 1 is mounted on the bracket 2, and the brake is a floating brake, wherein the scheme relies on the pin shaft 3 for axial floating.

[0031] The connecting rubber ring 4 is a rubber part, which is coated on the outside of the pin shaft 3. It includes a deformation part 9 in the middle, a connecting part 10 connected to the pin shaft 3 at one end, and a connecting part 2 11 connected to the bracket 2 at the other end. The connecting part 2 11 includes a guide sleeve 12 of the inner circle and a connecting sleeve 13 of the outer circle. The guide sleeve 12 is inserted into the socket 1 7. The pin shaft 3 is inserted into the guide sleeve 12 and extends to the bottom of the socket 1 7. The mouth of the socket 1 7 is located between the guide sleeve 12 and the connecting sleeve 13, and the connecting sleeve 13 is installed on the outside of the mouth of the socket 1 7. The connecting rubber ring 4 is a straight sleeve structure as a whole, wherein the deformation part 9 in the middle is an accordion style and can be retracted. The connecting part 10 and the connecting part 2 11 are both provided with a snap-fit ​​structure to cooperate with the pin shaft 3 and the bracket 2. After assembly, the connecting part 10 and the connecting part 2 11 are both located on the outside of the assembly part, thereby playing a protective role. The connecting part 10 and the connecting part 2 11 are both annular structures.

[0032] The pin shaft 3 includes a fixing pin 14 on the upper side and a connecting pin 15 on the lower side. One end of the connecting pin 15 abuts against the end surface of the lower opening of the second plug hole 8 and the connecting pin 15 is inserted into the first plug hole 7. The fixing pin 14 passes through the second plug hole 8 and is threadedly connected to the upper part of the connecting pin 15. The lower end of the connecting pin 15 is provided with an annular notch 16, and a guide 17 is installed in the notch 16. The guide 17 is a rubber part. The outer side of the guide 17 is provided with a plurality of annular grooves 18.

[0033] The upper end of the connecting pin 15 is provided with a limiting ring 19, the lower end face of the limiting ring 19 is an inclined surface, the inner side face of the upper end of the connecting part 10 is provided with an assembly groove 21 that matches the shape of the limiting ring 19, and the limiting ring 19 is assembled in the assembly groove 21; the mouth of the jack 17 is a pipe sleeve structure, the outer side face of the jack 17 is provided with an assembly groove 22, the lower end face of the assembly groove 22 is an inclined surface from inside to outside, and the inner ring face of the connecting sleeve 13 is provided with a limiting ring 20 that matches the shape of the assembly groove 22. This matching method has an anti-falling function, and the "turning" matching structure can prevent external dust from entering.

[0034] The side surface of the connecting pin 15 is provided with an exhaust groove 23 along the circumferential direction, and the exhaust groove 23 is connected to the interior of the connecting sleeve 13; wherein the inner wall of the guide sleeve 12 is provided with a groove structure 24, which extends axially along the guide sleeve 12, and the groove structure 24 is curved as a whole and is evenly arranged along the circumferential direction of the inner wall of the guide sleeve 12. The groove structure is an oil groove structure, and this structural design can increase the contact area between the pin shaft 3 and the grease.

[0035] The middle position of the bottom of the pliers body 1 is provided with an arc-shaped opening 25, and the bottom of the pliers body 1 is provided with supporting claws 26 on both sides of the arc-shaped opening 25, and the bottom surface of the supporting claws 26 is an arc-shaped inclined surface from the bottom to the top, so that the supporting claws 26 form a shape that is thin at the top and thick at the bottom; the part of the bracket 2 under the bracket 2 claw is a supporting frame, and the supporting frame is an arc-shaped structure as a whole; the convex direction of the supporting frame arc structure is the same as the convex direction of the arc-shaped opening 25, and the arc-shaped opening 25 is a U-shaped structure. A U-shaped opening 38 is provided at the bottom of the back side of the pliers body 1. This structural design can reduce weight while having better strength, tensile strength, and yield strength.

[0036] The brake block includes a brake block 1 27 matched with the piston and a brake block 2 28 supported by the caliper body 1. The brake block 1 27 includes a pad 29 and a friction block. The pad 29 has an improvement block 30 extending outward from the middle of the back side of the caliper. The improvement block 30 is in an arc shape. Since the brake block connected to the piston and the brake block on the bracket 2 are subjected to different forces, in order to balance the pressure distribution of the live connection brake block, the improvement block 30 designed in this solution can ensure that the forces on the jaw side of the friction block and the back side of the caliper are basically balanced, thereby improving the braking performance.

[0037] The caliper body 1 of this scheme includes a driving housing, and a transmission mechanism is arranged in the driving housing. The transmission mechanism includes a transmission screw 31 in the middle and a transmission piston 32 that cooperates with the transmission screw 31 on the outside. An axial limiting groove 331 is arranged on the transmission piston 32, and a limiting pin 33 is installed on the driving housing. The limiting pin 33 extends into the limiting groove 331; a limiting block 1 34 is arranged on the transmission screw 31, and a limiting block 2 35 is arranged on the transmission piston 32. The limiting block 1 34 and the limiting block 2 35 are at least partially located in the same plane. When the limiting block 1 34 and the limiting block 2 35 collide, the transmission screw 31 stops rotating. The design purpose of this scheme is to provide a locking limiting mechanism that can ensure that in the event of failure, the screw drives the piston to move forward too far. In this solution, the limit block 2 35 is located at the end of the transmission piston 32 away from the brake block, and the position of the limit block 1 34 corresponds to the limit block 2 35. When designing, the axial movement distance of the transmission piston 32 after the screw rod rotates a certain angle should be considered to avoid the height misalignment between the two resulting in the inability to limit.

[0038] Example 2

[0039] On the basis of Example 1, an MGU actuator is provided on the upper part of the drive housing, the output end of the actuator is a spline structure 37, and a spline groove 36 is provided on the upper end of the transmission screw 31. The spline structure 37 is inserted into the spline groove 36, and the number of spline teeth is 15.

[0040] Example 3

[0041] A vehicle is equipped with the brake of the second embodiment.

[0042] Example 4

[0043] A mechanical electronic braking system is equipped with the brake described in Example 2.

Claims

1. A brake, characterized in that: The invention comprises a pliers body (1) and a bracket (2), wherein the pliers body (1) and the bracket (2) are connected via a pin shaft (3) and an external connecting rubber ring (4), and the pliers body (1) can slide relative to the bracket (2) via the pin shaft (3); a first connecting ear (5) is provided on the bracket (2), and a second connecting ear (6) is provided on the pliers body (1); a first plug hole (7) is provided on the first connecting ear (5), and a second plug hole (8) is provided on the second connecting ear (6); the pin shaft (3) is plugged into the first plug hole (7) and the second plug hole (8) in sequence; The connecting rubber ring (4) comprises a middle deformable portion (9), a connecting portion 1 (10) connected to the pin shaft (3) at one end, and a connecting portion 2 (11) connected to the bracket (2) at the other end. The connecting portion 2 (11) comprises an inner ring guide sleeve (12) and an outer ring connecting sleeve (13). The guide sleeve (12) is inserted into the first plug hole (7). The pin shaft (3) is inserted into the guide sleeve (12) and then extends to the bottom of the first plug hole (7). The mouth of the first plug hole (7) is located between the guide sleeve (12) and the connecting sleeve (13). The connecting sleeve (13) is installed on the outer side of the mouth of the first plug hole (7).

2. The brake according to claim 1, characterized in that: The pin shaft (3) comprises a fixing pin (14) on the upper side and a connecting pin (15) on the lower side, one end of the connecting pin (15) abuts against the end surface of the lower side opening of the second plug hole (8) and the connecting pin (15) is inserted into the first plug hole (7); the fixing pin (14) passes through the second plug hole (8) and is threadedly connected to the upper part of the connecting pin (15); an annular notch (16) is provided at the lower end of the connecting pin (15), a guide member (17) is installed in the notch (16), and the guide member (17) is a rubber member.

3. The brake according to claim 2, characterized in that: The outer side surface of the guide member (17) is provided with a plurality of annular grooves (18).

4. The brake according to claim 2, characterized in that: A limiting ring (19) is arranged at the upper end of the connecting pin (15), the lower end surface of the limiting ring (19) is an inclined surface, the inner side surface of the upper end of the connecting portion (10) is arranged with an assembly groove (21) matching the shape of the limiting ring (19), and the limiting ring (19) is assembled in the assembly groove (21); the mouth of the plug hole (7) is a pipe sleeve structure, the outer side surface of the plug hole (7) is arranged with an assembly groove (22), the lower end surface of the assembly groove (22) is an inclined surface from inside to outside, and the inner ring surface of the connecting sleeve (13) is arranged with a limiting ring (20) matching the shape of the assembly groove (22).

5. The brake according to claim 2, characterized in that: An exhaust groove (23) is provided on the side surface of the connecting pin (15) along the circumferential direction, and the exhaust groove (23) is connected to the interior of the connecting sleeve (13); wherein a groove structure (24) is provided on the inner wall of the guide sleeve (12), and the groove structure (24) extends axially along the guide sleeve (12), and the groove structure (24) is in a curved shape as a whole and is evenly arranged along the circumferential direction of the inner wall of the guide sleeve (12).

6. The brake according to claim 1, characterized in that: An arc-shaped opening (25) is provided in the middle of the bottom of the pliers body (1), and supporting claws (26) are formed on both sides of the arc-shaped opening (25) at the bottom of the pliers body (1), and the bottom surface of the supporting claw (26) is an arc-shaped inclined surface from the bottom to the top, so that the supporting claw (26) forms a shape that is thin at the top and thick at the bottom; The portion of the support (2) below the claw of the support (2) is a support frame, and the support frame as a whole is an arc-shaped structure; the protruding direction of the arc-shaped structure of the support frame is the same as the protruding direction of the arc-shaped opening (25), and the arc-shaped opening (25) is a U-shaped structure; the bottom of the back side of the clamp body (1) is provided with a U-shaped opening (38).

7. The brake according to claim 1, characterized in that: The brake block comprises a brake block 1 (27) matched with a piston and a brake block 2 (28) supported by a caliper body (1). The brake block 1 (27) comprises a lining block (29) and a friction block. An improvement block (30) is extended outward from the middle of the lining block (29) near the back side of the caliper. The shape of the improvement block (30) is arc-shaped.

8. The brake according to claim 1, characterized in that: The caliper body (1) comprises a driving housing, a transmission mechanism is arranged in the driving housing, the transmission mechanism comprises a transmission screw (31) in the middle and a transmission piston (32) matched with the transmission screw (31) on the outside, an axial limiting groove (331) is arranged on the transmission piston (32), a limiting pin (33) is installed on the driving housing, and the limiting pin (33) extends into the limiting groove (331); a limiting block 1 (34) is arranged on the transmission screw (31), and a limiting block 2 (35) is arranged on the transmission piston (32), the limiting block 1 (34) and the limiting block 2 (35) are at least partially located in the same plane, and when the limiting block 1 (34) and the limiting block 2 (35) collide with each other, the transmission screw (31) stops rotating.

9. The brake according to claim 1, characterized in that: An MGU actuator is arranged on the upper part of the drive housing, the output end of the actuator is a spline structure (37), the upper end of the transmission screw rod (31) is arranged with a spline groove (36), the spline structure (37) is inserted into the spline groove (36), and the number of teeth of the spline is 15.

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