Reverse buckling type EPB brake caliper

Abstract

The utility model discloses a reverse buckling type EPB brake caliper, which relates to the technical field of automobile accessories and comprises a brake disc, a fixing support is mounted on one side of the brake disc, shoe grooves are formed in one side, close to the brake disc, of the fixing support, and an inner friction block and an outer friction block are respectively mounted in the two groups of shoe grooves. The side, close to the center of the brake disc, of the fixing support is connected with a sliding shaft, the sliding shaft is sleeved with calipers, the end, away from the fixing support, of the calipers is provided with a motor, a screw is installed in the calipers, the power output end of the motor is in meshed connection with the screw through a spline, the outer wall of the screw is in threaded connection with a threaded sleeve, and the outer side of the threaded sleeve is connected with a piston. According to the utility model, the fixed bracket, the sliding shaft, the calipers, the inner friction block, the piston, the motor, the screw rod, the screw sleeve and the outer friction block are arranged in a matched manner, so that a larger braking force can be realized with a smaller cylinder diameter, the comfort level of a pedal is effectively improved, meanwhile, the size of the calipers can be effectively reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a reverse-button EPB brake caliper. Background Art

[0002] The automobile braking system refers to a series of special devices that apply a certain force to the automobile wheels, thereby forcing them to brake to a certain extent. Usually, automobile braking is achieved through the EPB brake caliper, commonly known as the handbrake. Its purpose is that when the car is parked on the road or on a slope, the parking brake system locks the drive shaft or wheel through the EPB brake to prevent the vehicle from slipping. In addition, when the car encounters an emergency situation during driving and needs to brake quickly, the parking brake system can work together with the driving system to achieve emergency braking.

[0003] In the process of realizing the utility model, the inventors found that there are at least the following problems in this technology: the existing design increases the braking force by increasing the diameter of the brake disc and the cylinder diameter of the brake caliper. Due to the limitation of the radial thickness of the positive-button caliper, the increase in the diameter of the brake disc and the cylinder diameter of the brake caliper is very limited. In addition, the increase in the cylinder diameter increases the amount of fluid required by the caliper, which is not conducive to the control of pedal comfort. Summary of the invention

[0004] In order to improve the above-mentioned existing brake disc which is generally a disc concentric with the wheel, and the brake caliper is buckled on the brake disc, and due to the limited radial space in the wheel rim, the radial thickness of the brake caliper limits the diameter of the brake disc, and also limits the cylinder diameter of the brake caliper, the utility model provides a reverse buckle EPB brake caliper.

[0005] The utility model provides an inverted EPB brake caliper, which adopts the following technical solutions:

[0006] The inverted EPB brake caliper includes a brake disc, a fixed bracket is installed on one side of the brake disc, a shoe groove is provided on the side of the fixed bracket close to the brake disc, an inner friction block and an outer friction block are respectively installed inside the two groups of shoe grooves, a sliding shaft is connected to the side of the fixed bracket close to the center of the brake disc, a caliper is sleeved on the outer side of the sliding shaft, a motor is installed on the end of the caliper away from the fixed bracket, a screw is installed inside the caliper, a power output end of the motor is connected to the screw by spline meshing, a screw sleeve is screwed on the outer wall of the screw, and a piston is connected to the outer side of the screw sleeve.

[0007] By adopting the above technical solution, the brake disc is fixed on the wheel, one side of the fixed bracket is fixed on the horn of the suspension, and the other side is buckled on the inner circle of the brake disc to form a disc-type reverse brake. The caliper is changed from clamping inward to clamping outward, thereby increasing the diameter of the brake disc and achieving the purpose of increasing the braking effect. A larger braking force can be achieved with a smaller cylinder diameter, effectively improving pedal comfort.

[0008] Optionally, a rectangular sealing ring is provided between the end of the piston away from the motor and the caliper.

[0009] By adopting the above technical solution, the piston can be automatically returned.

[0010] Optionally, a plane bearing is provided between an end of the screw rod close to the motor and an inner wall of the caliper.

[0011] By adopting the above technical solution, the screw rod can be supported so that the screw rod can rotate more smoothly.

[0012] Optionally, a copper sleeve is provided between the right end of the screw and the caliper.

[0013] By adopting the above technical solution, the positioning and fixing functions can be achieved, thereby improving the stability of the screw during rotation.

[0014] Optionally, an O-ring is provided on one end of the outer side of the screw rod close to the copper sleeve.

[0015] By adopting the above technical solution, dust, water and other impurities can be prevented from entering the interior of the copper sleeve, thereby reducing wear and pollution.

[0016] Optionally, the caliper is provided with an axial hole matching the sliding shaft, and a rubber sleeve is provided between the sliding shaft and the axial hole on the caliper.

[0017] By adopting the above technical solution, the sliding shaft can be protected and a certain shock-absorbing effect can be exerted on the caliper.

[0018] Optionally, a dust cover is provided between the left end of the caliper and the piston.

[0019] By adopting the above technical solution, it is possible to effectively prevent foreign matter from entering.

[0020] In summary, the present invention has at least one of the following beneficial effects:

[0021] By coordinating the fixed bracket, sliding shaft, caliper, inner friction block, piston, motor, screw, screw sleeve and outer friction block, a larger braking force can be achieved with a smaller cylinder diameter, which effectively improves pedal comfort, and at the same time can effectively reduce the size of the caliper and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the connection structure between the fixed bracket and the brake disc of the utility model;

[0024] Figure 2 It is a side view stereoscopic structural schematic diagram of the utility model;

[0025] Figure 3 This is a front view structural schematic diagram of the utility model;

[0026] Figure 4 It is a side view structural schematic diagram of the utility model;

[0027] Figure 5 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0028] Figure 6 It is a rear view structural schematic diagram of the utility model.

[0029] In the figure: 1. brake disc; 2. fixed bracket; 3. sliding shaft; 4. caliper; 5. inner friction block; 6. dust cover; 7. piston; 8. motor; 9. O-ring; 10. copper sleeve; 11. plane bearing; 12. screw; 13. screw sleeve; 14. rectangular sealing ring; 15. outer friction block. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-6 The utility model is described in further detail.

[0031] Please refer to the attached figure in the instruction manual Figure 1 , Figure 2 , Figure 5 and Figure 6 The utility model provides an embodiment: an inverted EPB brake caliper, including a brake disc 1, a fixed bracket 2 is installed on one side of the brake disc 1, a shoe groove is provided on the side of the fixed bracket 2 close to the brake disc 1, an inner friction block 5 and an outer friction block 15 are installed inside the two groups of shoe grooves, a sliding shaft 3 is connected to the side of the fixed bracket 2 close to the center of the brake disc 1, a caliper 4 is sleeved on the outer side of the sliding shaft 3, a shaft hole matching the sliding shaft 3 is opened on the caliper 4, and a rubber sleeve is provided between the sliding shaft 3 and the shaft hole on the caliper 4. It is used to protect the sliding shaft 3 and can also play a certain shock-absorbing role on the caliper 4.

[0032] Please refer to the attached figure in the instruction manual Figure 2 , Figure 3 and Figure 4 The motor 8 is installed at one end of the caliper 4 away from the fixed bracket 2, and a screw 12 is installed inside the caliper 4. A plane bearing 11 is arranged between the end of the screw 12 close to the motor 8 and the inner wall of the caliper 4. Thus, the screw 12 can be supported, so that the screw 12 can rotate more smoothly.

[0033] Please refer to the attached figure in the instruction manual Figure 2 and Figure 4 A copper sleeve 10 is provided between the right end of the screw 12 and the caliper 4. It can play a role in positioning and fixing, and improve the stability of the screw 12 when rotating. An O-ring 9 is provided on the outer side of the screw 12 near the copper sleeve 10. This can prevent dust, water and other impurities from entering the copper sleeve 10, thereby reducing wear and pollution.

[0034] Please refer to the attached figure in the instruction manual Figure 2 , Figure 4 , Figure 5 and Figure 6 The power output end of the motor 8 is connected to the screw 12 through a spline meshing connection, the outer wall of the screw 12 is threaded with a screw sleeve 13, the outer side of the screw sleeve 13 is connected to the piston 7, and a rectangular sealing ring 14 is arranged between the end of the piston 7 away from the motor 8 and the caliper 4. It is used for the automatic return of the piston 7. A dust cover 6 is arranged between the left end of the caliper 4 and the piston 7. This can effectively prevent foreign matter from entering.

[0035] Working principle: When in use, the brake disc 1 is fixed on the wheel, one side of the fixed bracket 2 is fixed on the horn of the suspension, and the other side is buckled on the inner circle of the brake disc 1 to form a disc-type reverse brake. When braking is needed, the motor 8 is energized and rotated. When the motor 8 is working, it drives the screw 12 to rotate. Through the cooperation of the screw 12 and the screw sleeve 13, the rotational motion is converted into linear motion to push the piston 7 forward. The piston 7 then pushes the inner friction block 5 to move to the left. After the inner friction block 5 is close to the brake disc 1, due to the thrust, the caliper 4 will move backward and drive the outer friction block 15 to be close to the brake disc 1. Under the action of the thrust, the inner friction block 5 and the outer friction block 15 will clamp the brake disc 1, thereby generating a braking force. A larger braking force can be achieved with a smaller cylinder diameter, which effectively improves the pedal comfort. At the same time, it can effectively reduce the volume of the caliper 4 and reduce costs.

[0036] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An inverted EPB brake caliper, comprising a brake disc (1), characterized in that: A fixed bracket (2) is installed on one side of the brake disc (1), and a shoe groove is provided on one side of the fixed bracket (2) close to the brake disc (1), and an inner friction block (5) and an outer friction block (15) are installed inside the two groups of shoe grooves respectively. A sliding shaft (3) is connected to the side of the fixed bracket (2) close to the center of the brake disc (1), and a caliper (4) is sleeved on the outer side of the sliding shaft (3). A motor (8) is installed on the end of the caliper (4) away from the fixed bracket (2), and a screw rod (12) is installed inside the caliper (4). The power output end of the motor (8) is connected to the screw rod (12) through a spline meshing connection, and a screw sleeve (13) is screwed on the outer wall of the screw rod (12), and a piston (7) is connected to the outer side of the screw sleeve (13).

2. The reverse-button EPB brake caliper according to claim 1, characterized in that: A rectangular sealing ring (14) is provided between the end of the piston (7) away from the motor (8) and the caliper (4).

3. The reverse-button EPB brake caliper according to claim 1, characterized in that: A plane bearing (11) is provided between an end of the screw rod (12) close to the motor (8) and an inner wall of the caliper (4).

4. The reverse-button EPB brake caliper according to claim 1, characterized in that: A copper sleeve (10) is provided between the right end of the screw rod (12) and the caliper (4).

5. The reverse-button EPB brake caliper according to claim 4, characterized in that: An O-ring (9) is provided on one end of the outer side of the screw rod (12) close to the copper sleeve (10).

6. The reverse-button EPB brake caliper according to claim 1, characterized in that: The caliper (4) is provided with an axial hole that matches the sliding shaft (3), and a rubber sleeve is provided between the sliding shaft (3) and the axial hole on the caliper (4).

7. The reverse-button EPB brake caliper according to claim 1, characterized in that: A dust cover (6) is provided between the left end of the caliper (4) and the piston (7).

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