Automobile disc brake piston structure

Abstract

The utility model belongs to the technical field of brake pistons, and particularly relates to an automobile disc brake piston structure which comprises a piston cylinder, two installation grooves are formed in the upper surface of the piston cylinder, a groove plate is fixedly installed on the inner wall of each installation groove, and a driving motor is fixedly installed on the inner wall of each groove plate. A lead screw is fixedly installed at the output end of each driving motor, the outer surface of each lead screw is in threaded connection with a matched nut, a sliding block is fixedly installed on the outer surface of each matched nut, and the outer surface of each sliding block makes contact with the inner wall of the groove plate; by arranging a piston cylinder, a mounting groove, a groove plate, a driving motor, a lead screw, a matched nut, a sliding block, a supporting plate, a first guide rod, a second guide rod, a connecting plate and a sealing bearing, the driving motor is used for driving the lead screw, then the effect of pushing a piston through cooperation of the first guide rod and the second guide rod can be achieved, and under the condition that hydraulic driving occurs, the piston can be driven by the first guide rod and the second guide rod; and the piston is driven in an electric mode.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of brake piston, concretely relates to a disc brake piston structure of automobile. BACKGROUND

[0002] The brake piston is a key component in the automobile brake system, in the hydraulic brake system, when the driver steps on the brake pedal, the brake hydraulic pressure rises, drives the piston to move, the piston extrudes the brake shoe in turn, makes the brake shoe and the brake disc contact closely, realizes the brake of the vehicle through the friction, for example, in the common disc brake, the piston is located inside the brake caliper, its movement directly determines the pressure that the brake shoe exerts to the brake disc, thereby controls the deceleration of the vehicle.

[0003] The disc brake piston is driven by the hydraulic pressure, when the hydraulic pressure fails, the piston cannot drive the brake to brake, the existing disc brake piston is inconvenient to drive the piston when the hydraulic pressure fails.

[0004] To solve the above problems, the disc brake piston structure of automobile is provided in the application. UTILITY MODEL CONTENTS

[0005] To solve the above problems in the prior art, the disc brake piston structure of automobile is provided, which has the characteristics that the piston can work normally when the hydraulic drive fails.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a disc brake piston structure of automobile, including the piston cylinder, the upper surface of the piston cylinder is equipped with two installation grooves, the inner wall of each installation groove is fixedly installed with the groove board, the inner wall of each groove board is fixedly installed with the drive motor, the output end of each drive motor is fixedly installed with the lead screw, the outer surface of each lead screw is fixedly installed with the matched nut, the outer surface of each matched nut is fixedly installed with the sliding block, the outer surface of each sliding block is in contact with the inner wall of the groove board, the side face of two sliding blocks away from each other is fixedly installed with the support plate, the outer surface of each support plate is in contact with the inner wall of the groove board, the right side of each support plate is fixedly installed with the first guide rod, the outer surface of each first guide rod is fixedly installed with the connecting plate, the inner wall of each connecting plate is fixedly installed with the second guide rod, the outer surface of each second guide rod is slidably connected with the sealing bearing, and each sealing bearing is fixedly installed on the inner wall of the piston cylinder.

[0007] As a preferred technical scheme of the utility model, the inside of the piston cylinder is provided with the piston rod, and the outer surface of the piston rod is provided with the sealing ring.

[0008] As a preferred technical scheme of the utility model, the left side surface of the piston cylinder is fixedly installed with a caliper body, two brake shoes are arranged in the caliper body, and the right side surface of one of the brake shoes is fixedly connected with the left side surface of the piston rod.

[0009] As a preferred technical scheme of the utility model, the upper surface of the caliper body is fixedly installed with a bracket, and the inside of the piston cylinder is fixedly and communicatively provided with a liquid inlet pipe.

[0010] As a preferred technical scheme of the utility model, the side surface, away from each other, of the two groove plates is provided with a sealing plate, the inner wall of each sealing plate is threadedly connected with two groups of dismounting nails, and the outer surface of each group of dismounting nails is threadedly connected with the inner wall of the groove plate.

[0011] As a preferred technical scheme of the utility model, the inner wall of each sealing plate is fixedly installed with an elastic cover, and each elastic cover is fixedly installed on the supporting plate.

[0012] As a preferred technical scheme of the utility model, the outer surface of each first guide rod and the outer surface of each second guide rod are threadedly connected with a fastening nut, and the left side surface of each fastening nut is in contact with the right side surface of the connecting plate.

[0013] As a preferred technical scheme of the utility model, the inner bottom wall of each groove plate is fixedly installed with two guide plates, and the outer surface of each guide plate is slidably connected with the inside of the sliding block.

[0014] Compared with the prior art, the utility model has the beneficial effects that: through the arrangement of the piston cylinder, the installation groove, the groove plate, the driving motor, the lead screw, the matched nut, the sliding block, the supporting plate, the first guide rod, the second guide rod, the connecting plate and the sealing bearing, the driving motor is used for driving the lead screw, so that the first guide rod and the second guide rod are used for pushing the piston, the piston is driven in an electric mode under the hydraulic driving condition, and the normal operation of the piston is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model.

[0016] Figure 1 It is the structural schematic view of the utility model as a whole;

[0017] Figure 2 It is the structural schematic view of the installation groove in the utility model;

[0018] Figure 3 It is the structural schematic view of the sealing plate in the utility model;

[0019] Figure 4 It is a sectional view of the trough plate in the utility model.

[0020] In the figure: 1, piston cylinder; 2, bracket; 3, caliper body; 4, brake pad; 5, piston rod; 6, sealing ring; 7, liquid inlet pipe; 8, mounting groove; 9, trough plate; 10, dismounting nail; 11, sealing plate; 12, telescopic cover; 13, support plate; 14, first guide rod; 15, fastening nut; 16, connecting plate; 17, second guide rod; 18, matched nut; 19, sealing bearing; 20, driving motor; 21, guide plate; 22, lead screw; 23, sliding block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. EMBODIMENT

[0022] Please refer to Figures 1-4 The utility model provides the following technical scheme: a piston structure of automobile disc brake, including piston cylinder 1, the upper surface of piston cylinder 1 is equipped with two mounting grooves 8, the inner wall of each mounting groove 8 is fixedly installed with trough plate 9, the inner wall of each trough plate 9 is fixedly installed with driving motor 20, the output end of each driving motor 20 is fixedly installed with lead screw 22, the outer surface of each lead screw 22 is threadedly connected with matched nut 18, the outer surface of each matched nut 18 is fixedly installed with sliding block 23, the outer surface of each sliding block 23 is in contact with the inner wall of trough plate 9, the side face of two sliding blocks 23 away from each other is fixedly installed with support plate 13, the outer surface of each support plate 13 is in contact with the inner wall of trough plate 9, the right side of each support plate 13 is fixedly installed with first guide rod 14, the outer surface of each first guide rod 14 is fixedly installed with connecting plate 16, the inner wall of each connecting plate 16 is fixedly installed with second guide rod 17, the outer surface of each second guide rod 17 is slidingly connected with sealing bearing 19, each sealing bearing 19 is fixedly installed in the inner wall of piston cylinder 1, in the embodiment, sealing bearing 19 is arranged, can seal second guide rod 17 and piston cylinder 1, avoid the condition that liquid leaks from second guide rod 17 when normally using hydraulic drive.

[0023] Specifically, the inside of the piston cylinder 1 is provided with a piston rod 5, and the outer surface of the piston rod 5 is provided with a sealing ring 6. In this embodiment, the piston rod 5 and the sealing ring 6 are the main structures of the piston brake, and the piston rod 5 moves in the piston cylinder 1.

[0024] Specifically, the left side of the piston cylinder 1 is fixedly installed with a caliper body 3, the inside of the caliper body 3 is provided with two brake pads 4, and the right side of one of the brake pads 4 is fixedly connected with the left side of the piston rod 5. In this embodiment, the caliper body 3 and the brake pads 4 cooperate to brake the automobile wheel.

[0025] Specifically, the upper surface of the caliper body 3 is fixedly installed with a bracket 2, and the inside of the piston cylinder 1 is fixedly communicated with a liquid inlet pipe 7. In this embodiment, the bracket 2 and the liquid inlet pipe 7 are the main structures of the disc brake, which cooperate with the caliper body 3, the brake pads 4 and the like to fix the wheel.

[0026] Specifically, the side away from each other of the two groove plates 9 is provided with a sealing plate 11, the inner wall of each sealing plate 11 is threadedly connected with two groups of dismounting nails 10, and the outer surface of each group of dismounting nails 10 is threadedly connected with the inner wall of the groove plate 9. In this embodiment, the sealing plate 11 and the dismounting nail 10 are provided, the dismounting nail 10 is used for mounting and dismounting the sealing plate 11, the groove plate 9 can be opened, and the sealing plate 11 can seal the groove plate 9, so that the groove plate 9 is not always open.

[0027] Specifically, the inner wall of each sealing plate 11 is fixedly installed with an extension cover 12, and each extension cover 12 is fixedly installed on a supporting plate 13. In this embodiment, the extension cover 12 is provided for sealing the hollow part of the sealing plate 11, and can extend and retract with the movement of the supporting plate 13.

[0028] Specifically, the outer surface of each first guide rod 14 and the outer surface of each second guide rod 17 are threadedly connected with a fastening nut 15, and the left side of each fastening nut 15 is in contact with the right side of a connecting plate 16. In this embodiment, the fastening nut 15 is provided to fasten the connecting plate 16, the first guide rod 14 and the second guide rod 17, so as to ensure the stability of the connection between the connecting plate 16, the first guide rod 14 and the second guide rod 17.

[0029] Specifically, the inner bottom wall of each groove plate 9 is fixedly installed with two guide plates 21, and the outer surface of each guide plate 21 is slidably connected with the inside of a sliding block 23. In this embodiment, the guide plate 21 is provided to support the movement of the sliding block 23, so as to improve the stability of the sliding block 23.

[0030] The working principle and use process of the utility model: in the use process, liquid is transported into the piston cylinder 1 from the liquid inlet pipe 7, the liquid drives the piston rod 5 to move, the piston rod 5 drives the brake shoe 4 to move, the brake shoe 4 brakes the wheel, when the hydraulic drive fails, the driving motor 20 can be started, the driving motor 20 drives the lead screw 22 to rotate, the lead screw 22 drives the matched nut 18 to move, the matched nut 18 drives the sliding block 23 and the supporting plate 13 to move, in the process of moving the supporting plate 13 to the left, the first guide rod 14 drives the second guide rod 17 to move in the same direction through the connecting plate 16, the second guide rod 17 moves in the sealed bearing 19, and then the piston rod 5 is pushed to move, the piston rod 5 can be moved without using liquid, when the second guide rod 17 is reset, the driving motor 20 is reversed to drive each structure to reset to the original position, the sealed bearing 19 seals the piston cylinder 1, and leakage can not be generated when the piston cylinder 1 is driven by liquid.

[0031] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A piston structure for a disc brake of a vehicle, characterized by: Including piston cylinder (1), the upper surface of piston cylinder (1) is provided with two installation grooves (8), the inner wall of each installation groove (8) is fixedly installed with groove plate (9), the inner wall of each groove plate (9) is fixedly installed with drive motor (20), the output end of each drive motor (20) is fixedly installed with lead screw (22), the outer surface of each lead screw (22) is threadedly connected with matched nut (18), the outer surface of each matched nut (18) is fixedly installed with sliding block (23), the outer surface of each sliding block (23) is in contact with the inner wall of groove plate (9), the side face of two sliding blocks (23) away from each other is fixedly installed with support plate (13), the outer surface of each support plate (13) is in contact with the inner wall of groove plate (9), the right side of each support plate (13) is fixedly installed with first guide rod (14), the outer surface of each first guide rod (14) is fixedly installed with connecting plate (16), the inner wall of each connecting plate (16) is fixedly installed with second guide rod (17), the outer surface of each second guide rod (17) is slidably connected with sealing bearing (19), each sealing bearing (19) is fixedly installed in the inner wall of piston cylinder (1).

2. A piston structure for a disc brake of a vehicle according to claim 1, characterized in that: The inside of the piston cylinder (1) is provided with a piston rod (5), and the outer surface of the piston rod (5) is provided with a sealing ring (6).

3. A piston structure for a disc brake of a vehicle according to claim 2, characterized in that: The left side of the piston cylinder (1) is fixedly installed with a caliper body (3), the inside of the caliper body (3) is provided with two brake pads (4), and the right side of one of the brake pads (4) is fixedly connected with the left side of the piston rod (5).

4. A piston structure for a disc brake of a vehicle according to claim 3, characterized in that: The upper surface of the caliper body (3) is fixedly installed with a bracket (2), and the inside of the piston cylinder (1) is fixedly communicated with a liquid inlet pipe (7).

5. The piston structure of a disc brake for vehicle according to claim 1, wherein: The side face of two groove plates (9) away from each other is provided with a sealing plate (11), the inner wall of each sealing plate (11) is threadedly connected with two groups of disassembly nails (10), and the outer surface of each group of disassembly nails (10) is threadedly connected with the inner wall of the groove plate (9).

6. A piston structure for a disc brake of a vehicle according to claim 5, wherein: The inner wall of each sealing plate (11) is fixedly installed with an extension shield (12), and each extension shield (12) is fixedly installed on the support plate (13).

7. The piston structure of a disc brake for vehicle according to claim 1, wherein: The outer surface of each first guide rod (14) and the outer surface of second guide rod (17) are threadedly connected with a fastening nut (15), and the left side of each fastening nut (15) is in contact with the right side of the connecting plate (16).

8. A piston structure for a disc brake of a vehicle according to claim 1, characterized in that: The inner bottom wall of each groove plate (9) is fixedly installed with two guide plates (21), and the outer surface of each guide plate (21) is slidably connected with the inside of the sliding block (23).

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