Brake caliper

Abstract

The brake caliper includes a brake caliper body (1) and an actuator (2). The actuator (2) includes an outer housing and a motor. The brake caliper body (1) is provided with a caliper body flange (1a). The caliper body flange (1a) extends radially. The caliper body flange (1a) is provided with a first fixing point and a second fixing point for attaching the outer housing. The motor and the second fixing point are located outside the brake caliper body (1). The brake caliper can reduce the risk of damage to the motor.

Description

[Technical Field]

[0001] The present invention is in the technical field of braking systems, and more particularly, the present invention relates to brake calipers. [Background technology]

[0002] Motors used in electromechanical brakes are relatively large in volume and weight. In conventional mounting methods, a flange is attached to the output end housing of the motor generator unit (MGU) and then secured to the caliper body with screws. The MGU's mounting point is at the other end of the motor, which is parallel to the output end housing. The motor is connected to the caliper body via the housing. The motor end is floating, and the MGU is equivalent to a cantilever structure. Therefore, under vibration conditions, the amplitude of the motor end becomes large, which easily causes the motor end to vibrate inside the motor casing, resulting in mechanical fatigue. Furthermore, because the motor is heavy and its center of gravity is higher than the mounting point, the mounting strength between the output end housing and the caliper body flange is insufficient. Under vibration conditions, the motor and electronic components are highly susceptible to malfunction. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art, and therefore provides a brake caliper that aims to reduce the risk of damage to the motor. [Means for solving the problem]

[0004] In order to achieve the above object, the technical means used in the present invention are as follows. A brake caliper is provided that includes a brake caliper body and an actuator, the actuator including an outer housing and a motor. The brake caliper body is provided with a caliper body flange. The caliper body flange extends radially. The caliper body flange is provided with first and second fastening points for mounting the outer housing. The motor and second fastening points are located outside the brake caliper body.

[0005] Preferably, the outer housing includes a first housing portion connected to the caliper body flange at the first fixing point and a second housing portion connected to the caliper body flange at the second fixing point, and the motor is located within the second housing portion.

[0006] Preferably, the first housing part and the second housing part are connected to the caliper body flange by screws, bolts or rivets.

[0007] Preferably, the first housing part and the second housing part are both connected to the caliper body flange by at least one screw, bolt or rivet.

[0008] Preferably, housing flanges are provided on the outsides of the first housing portion and the second housing portion, the housing flanges are provided with through holes, and the caliper body flanges are provided with female threads.

[0009] Preferably, the caliper body flange is provided with a retraction hole for inserting the second housing portion therethrough.

[0010] Preferably, the second housing portion is a cylindrical body, and the retraction hole is a circular hole.

[0011] Preferably, the retraction hole is formed through the caliper body flange in a thickness direction, and the axis of the retraction hole is parallel to the axis of the cylinder bore of the brake caliper body.

[0012] Preferably, the length of the second housing portion is greater than the depth of the evacuation hole.

[0013] Preferably, the caliper body flange is provided with a caliper body lug, the caliper body lug including a hole, the hole being connected to a guide pin or a guide pin screw.

[0014] Preferably, the caliper body flange is provided with a caliper body lug, the caliper body lug being connected to the caliper body flange, and the flange surface contacts the outer housing.

[0015] Preferably, two caliper body lugs are provided, and the two caliper body lugs are connected to the caliper body flange. [Effects of the Invention]

[0016] The brake caliper of the present invention increases the area of the caliper body flange and directly fixes the motor to the caliper body, which makes the force applied to the motor uniform and reduces mechanical damage to the motor due to vibration conditions, thereby effectively protecting the motor and reducing the risk of motor damage.

[0017] This specification includes the following drawings, each of which shows the following: [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a schematic exploded view of a brake caliper according to the present invention. [Figure 2] FIG. 2 is a schematic structural diagram of a brake caliper body. DETAILED DESCRIPTION OF THE INVENTION

[0019] Next, specific embodiments of the present invention will be described in more detail by describing examples with reference to the drawings, for the purpose of helping those skilled in the art to more completely, accurately and deeply understand the concept and technical means of the present invention and to facilitate implementation.

[0020] As shown in FIGS. 1 and 2 , the present invention provides a brake caliper including a brake caliper body 1, a motion conversion mechanism, and an actuator 2. The actuator 2 includes an outer housing, a motor, and a gear transmission mechanism. The gear transmission mechanism is connected to the output end of the motor, which drives the gear transmission mechanism. The gear transmission mechanism transmits the rotational torque generated by the motor to the motion conversion mechanism, causing the motion conversion mechanism to perform a corresponding operation. The motion conversion mechanism converts the rotational motion of the motor, via the gear transmission mechanism, into a rotational motion of a screw, which is then converted into a linear motion of a piston, thereby achieving the braking and releasing functions of the brake caliper. The brake caliper body 1 is also provided with a caliper body flange 1a. The caliper body flange 1a extends radially. The caliper body flange 1a is provided with first and second fixing points for attaching the outer housing. The motor and second fixing points are located on the outside of the brake caliper body 1.

[0021] Specifically, as shown in FIG. 1, a caliper body flange 1a is fixedly provided at one end of a brake caliper body 1. An outer housing of an actuator 2 is fixedly attached to the caliper body flange 1a with screws 3. The outer housing has a hollow structure. The outer housing can simultaneously accommodate a motor and a gear transmission mechanism. A motion conversion mechanism and inner and outer brake pads are attached inside the brake caliper body 1. The motion conversion mechanism is located within the cylinder bore of the brake caliper body 1. This structure is well known to those skilled in the art, so it will not be described in detail here.

[0022] As shown in Figures 1 and 2, the outer housing of the actuator includes a first housing portion 2a and a second housing portion 2b that are connected to each other. The first housing portion 2a extends outside the second housing portion 2b. The first housing portion 2a is connected to the caliper body flange 1a at a first fixing point. The second housing portion 2b is connected to the caliper body flange 1a at a second fixing point. The motor is located in the internal cavity of the second housing portion 2b, and the gear transmission mechanism is located in the internal cavity of the first housing portion 2a. The second housing portion 2b has a hollow cylindrical structure. The internal cavity of the second housing portion 2b is also a cylindrical cavity.

[0023] As shown in Figures 1 and 2, the first housing portion 2a and the second housing portion 2b are connected to the caliper body flange 1a with screws 3. Flanges are provided on the outside of the first housing portion 2a and the second housing portion 2b. The housing flanges are provided with through holes for inserting the screws 3, and the caliper body flange 1a is provided with female threaded holes for inserting the screws 3. By directly fixing the housing to the brake caliper body 1 with the screws 3, the fixation is made even more solid and vibration resistance is improved. This uniformly distributes the force applied to the motor, effectively protecting the motor and making it less susceptible to damage from vibration.

[0024] As shown in FIGS. 1 and 2 , in this embodiment, the first housing portion 2a and the second housing portion 2b are each connected to the caliper body flange 1a by two screws 3. Accordingly, two female threaded holes for inserting the screws 3 are provided at a first fixing point on the caliper body flange 1a. Similarly, two female threaded holes for inserting the screws 3 are provided at a second fixing point on the caliper body flange 1a. The first fixing point and the second fixing point are arranged in sequence along the length direction of the caliper body flange 1a. The length direction of the caliper body flange 1a is perpendicular to the axial direction of the cylinder bore of the brake caliper body 1.

[0025] As shown in Figures 1 and 2, the caliper body flange 1a is provided with a retraction hole for inserting the second housing portion 2b. The second housing portion 2b is cylindrical, and the retraction hole is a cylindrical through-hole through which the second housing can be inserted. The retraction hole penetrates the caliper body flange 1a in the thickness direction. The axis of the retraction hole is parallel to the axis of the cylinder bore of the brake caliper body 1. The length of the second housing portion 2b is greater than the depth of the retraction hole. Therefore, by adding a flange structure to the caliper body and forming an annular structure in the retraction hole that surrounds the second housing portion 2b and fitting the motor into the annular structure, the amplitude of the motor can be effectively reduced.

[0026] As shown in Figures 1 and 2, a caliper body lug 1b is provided on the caliper body flange 1a. The caliper body lug 1b is connected to the flange surface of the caliper body flange 1a. The flange surface is in contact with the surface of the outer housing. The flange surface is a plane perpendicular to the axis of the cylinder bore of the brake caliper body 1. An internally threaded hole for inserting a screw 3 is provided on the flange surface. Moving the position of the caliper body lug 1b upward is advantageous for balancing the center of gravity of the motor and the entire system.

[0027] 1 and 2, two caliper body lugs 1b are provided, and the two caliper body lugs 1b are connected to the caliper body flange 1a.

[0028] The present invention has been described above by way of example in conjunction with the drawings. Needless to say, the specific implementation of the present invention is not limited to the above-mentioned manner. Various insubstantial improvements made by using the methods, concepts and technical means of the present invention, or the direct application of the above concepts and technical means of the present invention to other situations without any improvements, are all within the scope of protection of the present invention. [Explanation of symbols]

[0029] 1 Brake caliper body 1a Caliper body flange 1b Caliper body lug 2 Actuators 3 screws 4 Inner brake pads 5 frames 6 Outer brake pads

Claims

1. 1. A brake caliper comprising: a brake caliper body and an actuator, the actuator comprising an outer housing and a motor, The brake caliper body has a caliper body flange extending radially, the caliper body flange has a first fixing point and a second fixing point for attaching the outer housing, and the motor and the second fixing point are located outside the brake caliper body.

2. 2. The brake caliper of claim 1, wherein the outer housing includes a first housing portion and a second housing portion, the first housing portion connected to the caliper body flange at the first fixing point, the second housing portion connected to the caliper body flange at the second fixing point, and the motor located within the second housing portion.

3. 3. The brake caliper of claim 2, wherein the first housing portion and the second housing portion are connected to the caliper body flange by screws, bolts, or rivets.

4. 4. The brake caliper according to claim 3, wherein housing flanges are provided on the outside of the first housing portion and the second housing portion, the housing flanges have through holes, and the caliper body flanges have female threads.

5. 3. The brake caliper according to claim 2, wherein the caliper body flange is provided with a recess hole for inserting the second housing portion therethrough.

6. 6. The brake caliper according to claim 5, wherein the second housing portion is a cylindrical body, and the retraction hole is a circular hole.

7. 7. The brake caliper according to claim 6, wherein the retraction hole is formed through the caliper body flange in a thickness direction, and the axis of the retraction hole is parallel to the axis of the cylinder hole of the brake caliper body.

8. 6. The brake caliper according to claim 5, wherein the length of the second housing portion is greater than the depth of the retraction hole.

9. 9. The brake caliper according to claim 1, wherein the caliper body flange is provided with a caliper body lug, the caliper body lug including a hole, the hole being connected to a guide pin or a guide pin screw.

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