Brake pressure arm with good limiting effect

Abstract

The utility model provides a brake pressure arm with a good limiting effect, and belongs to the technical field of automobile accessories. The problem that an existing brake pressure arm cannot accurately control the brake clearance is solved. The brake pressure arm with the good limiting effect comprises an arm body, a ball socket is formed in the bottom of the front side of the arm body, a check block is connected to the bottom of the arm body, an arc-shaped groove is formed in the arm body in a penetrating mode, three mounting screw holes are formed in the inner wall of the arc-shaped groove, and three limiting components are jointly mounted on the mounting screw holes and the inner wall of the arc-shaped groove. The brake clearance can be accurately controlled, and the brake effect is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and specifically relates to a brake pressure arm with good limiting effect. Background Technology

[0002] The pressure arm is the core force transmission component of an air disc brake (ADB). It is located between the brake chamber and the friction pads, and its core functions are force transmission and amplification, as well as automatic clearance adjustment.

[0003] For example, Chinese patent literature discloses a pressure arm applicable to a single push rod pneumatic disc brake [Application No.: 201320259991.6; Authorization Announcement No.: CN203308979U], comprising: a pressure arm body with a ball socket at one end and a rotating surface fixedly connected to the other end; the rotating surface includes an inner arc surface and an outer arc surface, and is divided into two sections by a hole in the middle, with the opening of the rotating surface and the opening of the ball socket both located on the right side of the pressure arm body; wedge-shaped brackets are respectively provided at both ends of the rotating surface, and the support feet of the wedge-shaped brackets on the right side of the pressure arm body are rounded support feet.

[0004] The pressure arm of the aforementioned single-push-rod air disc brake meets the force amplification ratio requirements of the single-push-rod air disc brake, but it cannot precisely control the braking clearance. After the brake pads wear out, it cannot accurately adjust the clearance back to the preset range, resulting in excessive clearance and problems such as brake force attenuation and delayed braking response. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a brake pressure arm with good limiting effect that can accurately control the brake gap.

[0006] The purpose of this utility model can be achieved through the following technical solution: a brake pressure arm with good limiting effect, including an arm body, a ball socket is provided at the bottom of the front side of the arm body, a stop block is connected to the bottom of the arm body, an arc groove is provided through the arm body, three mounting screw holes are provided on the inner wall of the arc groove, and three limiting components are installed together on the mounting screw holes and the inner wall of the arc groove.

[0007] This brake pressure arm, with its superior limiting effect, utilizes a combination of limiting components and a stop block to achieve precise positioning. The vehicle's control center controls the simultaneous extension of the electric telescopic rods, while the arc-shaped limiting plate moves towards the one-way clutch, ensuring the clearance is precisely adjusted back to the preset range. Furthermore, all electric telescopic rods can extend simultaneously, in which case the arc-shaped limiting plate is engaged. Alternatively, two electric telescopic rods on a single limiting component can be extended simultaneously, in which case only one arc-shaped limiting plate is engaged. When the brake is released via the stop block, the pressure arm rotates under the action of the return spring until the stop block contacts the reference surface, forcibly stopping the retraction.

[0008] In the aforementioned brake pressure arm with good limiting effect, the arm body and the stop block are integrally formed. When the brake is released via the stop block, the pressure arm rotates under the action of the return spring until the stop block contacts the reference surface, forcibly stopping the retraction.

[0009] In the aforementioned brake pressure arm with good limiting effect, the arm body and the stop block are integrally formed. When the brake is released via the stop block, the pressure arm rotates under the action of the return spring until the stop block contacts the reference surface, forcibly stopping the retraction.

[0010] In the aforementioned brake pressure arm with good limiting effect, the inner wall of the rotating groove is provided with an internal hexagonal locating bolt. The bottom of the internal hexagonal locating bolt passes through the rotating hole and extends into the interior of the mounting screw hole, where it is threadedly connected to the inner wall of the mounting screw hole. The cooperation between the internal hexagonal locating bolt and the mounting screw hole facilitates the positioning and installation of the arc-shaped mounting plate.

[0011] In the aforementioned brake pressure arm with good limiting effect, the inner wall of the arc-shaped mounting plate has hidden holes on both sides of the rotating groove. Electric telescopic rods are embedded in the inner wall of these hidden holes, and the telescopic ends of the two electric telescopic rods are connected to the arc-shaped limiting plate. The bottom of the electric telescopic rods can be retracted through the hidden holes, and when the electric telescopic rods extend, the arc-shaped limiting plate can move towards the one-way clutch.

[0012] Compared to existing technologies, this brake pressure arm, with its superior limiting effect, achieves a limiting advantage through the combined use of limiting components and stops. The vehicle's control center controls the simultaneous extension of the electric telescopic rods, while the arc-shaped limiting plate moves towards the one-way clutch, precisely correcting the clearance to the preset range. Furthermore, all electric telescopic rods can extend simultaneously, in which case the arc-shaped limiting plate is engaged. Alternatively, two electric telescopic rods on a single limiting component can be controlled to extend simultaneously, in which case only one arc-shaped limiting plate is engaged. Upon brake release, the pressure arm rotates under the action of the return spring via the stop until the stop contacts the reference surface, forcibly stopping the retraction. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the arm structure of this utility model.

[0015] Figure 3 This is an exploded view of the limiting component structure of this utility model.

[0016] Figure 4 This is a utility model Figure 3 A bottom view.

[0017] In the diagram: 1. Ball socket; 2. Arm body; 3. Limiting component; 31. Arc-shaped mounting plate; 32. Rotating groove; 33. Hidden hole; 34. Hex socket positioning bolt; 35. Electric telescopic rod; 36. Arc-shaped limiting plate; 37. Rotating hole; 4. Mounting screw hole; 5. Arc-shaped groove; 6. Stop block. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the brake pressure arm with good limiting effect includes an arm body 2. A ball socket 1 is provided at the bottom of the front side of the arm body 2. A stop block 6 is connected to the bottom of the arm body 2. An arc groove 5 is provided through the arm body 2. Three mounting screw holes 4 are provided on the inner wall of the arc groove 5. Three limiting components 3 are installed together on the mounting screw holes 4 and the inner wall of the arc groove 5.

[0020] To elaborate further, the arm body 2 and the stop block 6 are integrally formed. The limiting component 3 includes an arc-shaped mounting plate 31, with a rotating groove 32 at the center of the inner wall of the arc-shaped mounting plate 31. A rotating hole 37 is formed through the bottom of the inner wall of the rotating groove 32, and the center line of the rotating hole 37 is on the same straight line as the center line of the mounting screw hole 4.

[0021] The inner wall of the rotating groove 32 is provided with an internal hexagonal locating bolt 34. The bottom of the internal hexagonal locating bolt 34 passes through the rotating hole 37 and extends into the interior of the mounting screw hole 4, where it is threadedly connected to the inner wall of the mounting screw hole 4. The inner wall of the arc-shaped mounting plate 31, located on both sides of the rotating groove 32, is provided with hidden holes 33. The inner wall of the hidden holes 33 is inlaid with electric telescopic rods 35, and the telescopic ends of the two electric telescopic rods 35 are connected to an arc-shaped limiting plate 36.

[0022] During use, when braking, the vehicle's control center controls the simultaneous extension of the electric telescopic rods 35, and the arc-shaped limiting plate 36 moves towards the one-way clutch, allowing the gap to precisely return to the preset range. Furthermore, all electric telescopic rods 35 can extend simultaneously, at which point the arc-shaped limiting plate 36 is in use. Alternatively, two electric telescopic rods 35 on a single limiting component 3 can be controlled to extend simultaneously, in which case only one arc-shaped limiting plate 36 is in use. When releasing the brake via the stop block 6, the pressure arm rotates under the action of the return spring until the stop block 6 contacts the reference surface, forcibly stopping the retraction.

[0023] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A brake pressure arm with good limiting effect, comprising an arm body (2), characterized in that: The bottom of the front side of the arm body (2) is provided with a ball socket (1), the bottom of the arm body (2) is connected with a stop block (6), the arm body (2) is provided with an arc groove (5), the inner wall of the arc groove (5) is provided with three mounting screw holes (4), and the mounting screw holes (4) and the inner wall of the arc groove (5) are jointly provided with three limiting components (3).

2. The brake pressure arm with good limiting effect according to claim 1, characterized in that: The arm body (2) and the stop block (6) are integrally formed.

3. The brake pressure arm with good limiting effect according to claim 1, characterized in that: The limiting component (3) includes an arc-shaped mounting plate (31), a rotating groove (32) is provided at the center of the inner wall of the arc-shaped mounting plate (31), and a rotating hole (37) is provided through the bottom of the inner wall of the rotating groove (32). The center line of the rotating hole (37) and the center line of the mounting screw hole (4) are on the same straight line.

4. The brake pressure arm with good limiting effect according to claim 3, characterized in that: The inner wall of the rotating groove (32) is provided with an internal hexagonal positioning bolt (34). The bottom of the internal hexagonal positioning bolt (34) passes through the rotating hole (37) and extends into the interior of the mounting screw hole (4) and is threaded to the inner wall of the mounting screw hole (4).

5. A brake pressure arm with good limiting effect according to claim 3, characterized in that: The inner wall of the arc-shaped mounting plate (31) and both sides of the rotating groove (32) are provided with hidden holes (33). The inner wall of the hidden holes (33) is inlaid with electric telescopic rods (35), and the telescopic ends of the two electric telescopic rods (35) are connected to the arc-shaped limiting plate (36).

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