Novel drum brake connected with two groups of brake pads

Abstract

The utility model discloses a novel drum brake connected with two groups of brake pads, which comprises a brake rocking handle, a brake drum is arranged on one side of the brake rocking handle, a limit ring is fixed on one side of the brake drum, and the brake rocking handle drives brake blocks on two sides to rotate through a rotating shaft by rotating the brake rocking handle. The brake pads on the two sides are separated from the brake drum through the brake blocks, then the fastening screws are loosened, the two brake blocks are separated, then the outer sides of the two limiting rods are pressed at the same time, the compression springs are driven to conduct extrusion, the limiting rods, the supporting blocks and the check blocks slide and are separated, and then the abraded brake pads are sequentially taken down. And then a new brake pad and the brake block are installed, the limiting rods slide to the position between the supporting block and the check block, then the limiting rods are loosened, the two limiting rods are opened outwards and fixed through pushing of the compression springs, the brake block is fixed through the fastening screws after replacement is completed, and the purpose of replacing the brake pad can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of brake pads, in particular to a novel drum brake connected with two groups of brake pads. Background Art

[0002] Drum brake is a traditional braking method, mainly used in cars, motorcycles and other vehicles. It consists of brake pads, brake drums, brake shoes, brake springs and other components. When braking, the brake pads and brake drums rub against each other to generate friction, thereby slowing down or stopping the vehicle. After long-term use, drum brakes are prone to brake thermal decay, affecting the braking effect. Secondly, the friction between the brake pads and brake drums of drum brakes is large, which is easy to wear the brake pads and brake drums, and need to be replaced regularly.

[0003] It is not convenient to replace the brake pads separately when replacing some existing new drum brakes. Since the brake blocks and brake pads are fixed, the brake blocks and brake pads are replaced together during replacement, resulting in increased maintenance costs and unnecessary waste of resources. Utility Model Content

[0004] The utility model aims to provide a novel drum brake connected with two sets of brake pads, which can replace the brake pads separately, so as to solve the above-mentioned background technical problems.

[0005] The technical solution of the utility model for solving the above technical problems is as follows: a new type of drum brake connected with two groups of brake pads, comprising a brake crank handle, a brake drum is arranged on one side of the brake crank handle, a limiting ring is fixed on one side of the brake drum, a bearing seat is opened inside the brake drum, a rotating shaft is fixed on one side of the brake drum, a brake block is rotatably connected to the outer side of the rotating shaft, a slot is opened inside the brake block, a brake pad is inserted into the slot, one side of the brake pad is rotatably connected to a limiting rod, a compression spring is fixed at the connection of the limiting rod, support blocks are respectively arranged on both sides of the limiting rod, and a stop block is arranged on one side of the limiting rod.

[0006] Preferably, the number of the brake blocks is set to two, and the two brake blocks are fixedly connected by fastening screws.

[0007] Preferably, a return spring is fixed on one side of the brake shoe, connecting blocks are fixed on both ends of the return spring, and the connecting blocks are fixedly connected to the brake shoe.

[0008] Preferably, the support block and the stop block are both fixedly connected to the brake block, and the support block and the stop block are respectively clamped with the limit rod.

[0009] Preferably, a lever is fixed to one side of the brake crank handle, and the lever fits tightly with the brake block.

[0010] Preferably, a pressure block is fixed on one side of the brake pad, and the pressure block is tightly fitted with the support block.

[0011] 1. The beneficial effects of the utility model are as follows: the utility model rotates the brake crank handle, and the brake crank handle drives the brake shoes on both sides to rotate through the rotating shaft, and the brake shoes on both sides are separated from the brake drum through the brake shoes, and then the fastening screws are loosened to separate the two brake shoes, and then the outer sides of the two limit rods are pressed at the same time to drive the compression spring to squeeze, so that the limit rod and the support block and the stop block slide and disengage, and then the worn brake shoes are removed in turn, and then the new brake shoes are installed, and the limit rod is slid between the support block and the stop block, and then the limit rod is loosened, and the two limit rods are opened outwards and fixed by the push of the compression spring, and the brake shoes are fixed by the fastening screws after the replacement is completed, so as to achieve the purpose of replacing the brake shoes.

[0012] 2. The utility model sets the number of brake blocks to two, and the two brake blocks are fixedly connected by fastening screws, which is convenient for disassembly and assembly of the brake blocks. A return spring is fixed on one side of the brake block, and connecting blocks are fixed on both ends of the return spring. The connecting block is fixedly connected to the brake block, and the brake block is connected by the return spring and the connecting block. The return spring facilitates resetting of the brake block.

[0013] 3. The utility model is fixedly connected to the brake block through the support block and the stop block, and the support block and the stop block are respectively clamped with the limit rod, which is convenient for clamping and fixing the limit rod.

[0014] 4. The utility model has a lever fixed on one side of the brake crank handle, and the lever fits tightly with the brake block, so that the brake block drives the brake pad to brake the brake drum. A pressure block is fixed on one side of the brake pad, and the pressure block fits tightly with the support block, so that the brake pad and the brake block are fitted and fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] in:

[0016] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0017] Figure 2 A three-dimensional diagram of a brake handle and a brake drum according to an embodiment of the utility model;

[0018] Figure 3 A cross-sectional view of a brake block and a brake pad according to an embodiment of the utility model;

[0019] Figure 4 It is a partial enlarged view of point A of the utility model.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Brake handle, 2. Limit ring, 3. Brake drum, 4. Bearing seat, 5. Fastening screw, 6. Rotating shaft, 7. Brake block, 8. Return spring, 9. Connecting block, 10. Slot, 11. Brake pad, 12. Limit rod, 13. Compression spring, 14. Support block, 15. Stop block, 16. Push rod, 17. Pressure block. DETAILED DESCRIPTION

[0022] Hereinafter, an embodiment of a novel drum brake connected with two sets of brake pads according to the present invention will be described with reference to the accompanying drawings.

[0023] Embodiment 1:

[0024] Figure 1-4 A new drum brake with two sets of brake pads connected is shown in an embodiment of the utility model, which includes a brake crank handle 1, a brake drum 3 is provided on one side of the brake crank handle 1, a limiting ring 2 is fixed on one side of the brake drum 3, a bearing seat 4 is provided inside the brake drum 3, a rotating shaft 6 is fixed on one side of the brake drum 3, a brake block 7 is rotatably connected to the outer side of the rotating shaft 6, a slot 10 is provided inside the brake block 7, a brake pad 11 is inserted inside the slot 10, a pressure block 17 is fixed on one side of the brake pad 11, the pressure block 17 is tightly fitted with a support block 14, so that the brake pad 11 and the brake block 7 are fitted and fixed, one side of the brake pad 11 is rotatably connected to a limiting rod 12, a compression spring 13 is fixed at the connection of the limiting rod 12, support blocks 14 are respectively provided on both sides of the limiting rod 12, the support block 14 and the stop block 15 are both fixedly connected to the brake block 7, and the support block 14 and the stop block 15 are respectively clamped with the limiting rod 12, so that the limiting rod 12 is clamped and fixed, and a stop block 15 is provided on one side of the limiting rod 12 The brake pads 11 are then released from the brake drum 3 and the two brake pads 7 are then released.

[0025] Embodiment 2:

[0026] Figure 1-4A new drum brake with two sets of brake pads connected is shown in an embodiment of the utility model, which includes a brake crank handle 1, a brake drum 3 is arranged on one side of the brake crank handle 1, a lever 16 is fixed on one side of the brake crank handle 1, the lever 16 is tightly fitted with the brake block 7, so that the brake block 7 drives the brake pad 11 to brake the brake drum 3, a limiting ring 2 is fixed on one side of the brake drum 3, a bearing seat 4 is provided inside the brake drum 3, a rotating shaft 6 is fixed on one side of the brake drum 3, and a brake block 7 is rotatably connected to the outer side of the rotating shaft 6, the number of the brake blocks 7 is set to two, and the two brake blocks 7 are fixedly connected by fastening screws 5. It is convenient to disassemble and assemble the brake shoe 7. A return spring 8 is fixed on one side of the brake shoe 7. Connecting blocks 9 are fixed at both ends of the return spring 8. The connecting block 9 is fixedly connected to the brake shoe 7. The brake shoe 7 is connected by the return spring 8 and the connecting block 9. The return spring 8 facilitates the resetting of the brake shoe 7. A slot 10 is provided inside the brake shoe 7. A brake pad 11 is inserted inside the slot 10. One side of the brake pad 11 is rotatably connected to a limiting rod 12. A compression spring 13 is fixed at the connection of the limiting rod 12. Support blocks 14 are respectively provided on both sides of the limiting rod 12, and a stopper 15 is provided on one side of the limiting rod 12.

[0027] Working principle: When the utility model is used, when the user needs to replace the brake pads 11, the brake handle 1 is rotated, and the brake handle 1 drives the lever 16 to rotate. When the lever 16 rotates, it drives the brake blocks 7 on both sides to rotate, and the brake pads 11 on both sides are separated from the brake drum 3 through the brake blocks 7, and then the fastening screws 5 are loosened to separate the two brake blocks 7, and then the outer sides of the two limit rods 12 are pressed at the same time, driving the compression spring 13 to squeeze, so that the limit rod 12 and the support block 14 are in contact with the stop block. The brake pads 11 are removed one by one after being worn, and the new brake pads 11 are inserted into the slots 10, so that the limiting rods 12 slide between the supporting blocks 14 and the blocking blocks 15, and then the limiting rods 12 are loosened, and the two limiting rods 12 are opened outwards by the push of the compression springs 13 to be fixed. At the same time, the pressure blocks 17 are also tightly fitted with the supporting blocks 14 after the limiting rods 12 are fixed to form a fixation. After the replacement is completed, the brake pads 7 can be fixed by tightening the screws 5.

Claims

1. A new type of drum brake connected with two sets of brake pads, characterized in that: The invention comprises a brake handle (1), a brake drum (3) is arranged on one side of the brake handle (1), a limiting ring (2) is fixed on one side of the brake drum (3), a bearing seat (4) is provided inside the brake drum (3), a rotating shaft (6) is fixed on one side of the brake drum (3), a brake block (7) is rotatably connected to the outer side of the rotating shaft (6), a slot (10) is provided inside the brake block (7), a brake pad (11) is inserted inside the slot (10), one side of the brake pad (11) is rotatably connected to a limiting rod (12), a compression spring (13) is fixed at the connection of the limiting rod (12), support blocks (14) are respectively provided on both sides of the limiting rod (12), and a stopper (15) is provided on one side of the limiting rod (12).

2. A novel drum brake connected with two sets of brake pads according to claim 1, characterized in that: The number of the brake blocks (7) is set to two, and the two brake blocks (7) are fixedly connected by a fastening screw (5).

3. A novel drum brake connected with two sets of brake pads according to claim 2, characterized in that: A return spring (8) is fixed on one side of the brake block (7), and connecting blocks (9) are fixed on both ends of the return spring (8), and the connecting blocks (9) are fixedly connected to the brake block (7).

4. A novel drum brake connected with two sets of brake pads according to claim 3, characterized in that: The support block (14) and the stop block (15) are both fixedly connected to the brake block (7), and the support block (14) and the stop block (15) are respectively clamped with the limit rod (12).

5. A new drum brake with two sets of brake pads connected according to claim 4, characterized in that: A lever (16) is fixed to one side of the brake rocker (1), and the lever (16) is tightly fitted to the brake block (7).

6. A novel drum brake connected with two sets of brake pads according to claim 1, characterized in that: A pressure block (17) is fixed on one side of the brake pad (11), and the pressure block (17) is tightly fitted with the support block (14).

Images