Active return mechanism for EMB caliper guide rod
By designing the active return mechanism of the EMB caliper guide rod, the combination of coil spring and thin spring is used to solve the problem of insufficient return ability of the EMB caliper guide rod, and the fast and effective return of the caliper and stable return function throughout the life cycle are achieved.
Patent Information
- Application Number
- CN202421766592.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The EMB caliper guide lacks effective return capability, which affects the drag and brake force release time of the caliper.
An EMB caliper guide rod active return mechanism is designed, using the combination of coil spring and thin spring, the fast return of the caliper guide rod is achieved through the cooperation of the limit groove and the buffer sleeve, and the return force is maintained within the calibration range through the limit function of the thin spring when the friction plate is worn.
It effectively improves the return performance of the EMB caliper guide rod, optimizes the drag and brake release time of the caliper, and ensures a stable and reliable return function throughout the life cycle.
Smart Images
Figure CN222746481U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of EMB brake calipers, in particular to an active return mechanism for an EMB caliper guide rod. Background Art
[0002] In the current era of rapid development of new energy vehicles, people have higher and higher requirements for product quality, performance and cost-effectiveness. Therefore, new energy vehicles usually use EMB brake calipers to improve the vehicle's braking effect. EMB is an electronic mechanical braking technology, an advanced form of automotive braking system. The EMB brake caliper system can be more closely integrated with the autonomous driving system to provide more precise vehicle control.
[0003] However, the EMB caliper guide rod does not have a good return ability, which affects the overall performance of the EMB caliper, mainly affecting the caliper's drag and brake force release time. The current traditional hydraulic brake calipers have rectangular sealing rings to provide return after brake release, while the EMB brake caliper does not have a rectangular sealing ring to provide return force. Therefore, an EMB caliper guide rod active return mechanism is needed to improve the return performance of the caliper guide rod after brake release while optimizing the caliper's drag and brake release time. Utility Model Content
[0004] The utility model aims to solve the shortcomings in the prior art and proposes an EMB caliper guide rod active return mechanism.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] An EMB caliper guide rod active return mechanism comprises a caliper bracket, the inner wall of the caliper bracket is slidably connected to the caliper guide rod, the inner wall of the caliper bracket is provided with a plurality of limit grooves, the inner wall of the limit groove is provided with a leaf spring, the outer wall of the leaf spring is provided with a coil spring, and the outer wall of one side of the coil spring is provided on the outer wall of one side of the caliper guide rod.
[0007] As a further solution of the utility model: the outer wall of the caliper guide rod is provided with a connecting sleeve.
[0008] As a further solution of the utility model: a conical reserved groove is opened on the inner wall of one side of the caliper bracket.
[0009] As a further solution of the utility model: a buffer sleeve is provided on the outer wall of the caliper bracket.
[0010] As a further solution of the utility model: an elastic telescopic rod is slidably connected to the inner wall of the caliper bracket, a connecting piece is fixed to the telescopic end of the elastic telescopic rod, and a connecting ring is fixed to the outer wall of the elastic telescopic rod.
[0011] As a further solution of the utility model: an elastic block is fixed on the outer wall of the connecting ring, the elastic block is clamped on the inner wall of the limiting groove, and a plurality of reserved holes are opened on the outer wall of the connecting piece.
[0012] The beneficial effects of the utility model are:
[0013] 1. When the EMB caliper is in the clamping condition, the caliper guide rod will pull the coil spring to deform the coil spring and generate elastic potential energy. When the EMB caliper is in the releasing condition, the coil spring generates a pulling force on the caliper guide rod, so that the caliper guide rod can be pulled back into the caliper bracket, allowing the caliper guide rod to return quickly and effectively.
[0014] 2. As the friction plate in the EMB caliper continues to wear, the caliper guide rod will gradually move away from the caliper bracket. At this time, the force applied to the coil spring will exceed the calibrated range. At this time, the leaf spring will cross the limit slot under the tension of the coil spring, and get stuck in the next limit slot closer to the caliper guide rod, thereby restoring the spring force of the coil spring to within the calibrated range. During the entire life cycle of the EMB caliper, the return force of the coil spring on the caliper guide rod will be limited to the calibrated range, providing a stable and reliable return function. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the main structure of an EMB caliper guide rod active return mechanism proposed by the utility model;
[0016] Figure 2 This is a schematic diagram of the internal structure of a caliper bracket of an EMB caliper guide rod active return mechanism proposed by the utility model;
[0017] Figure 3 This is a structural schematic diagram of Embodiment 2 of an EMB caliper guide rod active return mechanism proposed by the utility model;
[0018] Figure 4 It is a schematic diagram of the traditional caliper guide rod structure of the EMB caliper guide rod active return mechanism proposed by the utility model.
[0019] In the figure: 1-caliper bracket, 2-caliper guide rod, 3-connecting sleeve, 4-helical spring, 5-leaf spring, 6-conical reserved groove, 7-limiting groove, 8-buffer sleeve, 9-connecting plate, 10-reserved hole, 11-elastic telescopic rod, 12-elastic block, 13-connecting ring. DETAILED DESCRIPTION
[0020] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.
[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0022] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.
[0023] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.
[0024] Example 1
[0025] An EMB caliper guide rod active return mechanism, such as Figure 1-2 As shown, it comprises a caliper bracket 1, the inner wall of the caliper bracket 1 is slidably connected with a caliper guide rod 2, the inner wall of the caliper bracket 1 is provided with a plurality of limit grooves 7, the inner wall of the limit groove 7 is provided with a leaf spring 5, the outer wall of the leaf spring 5 is provided with a coil spring 4, and the outer wall of one side of the coil spring 4 is provided on the outer wall of one side of the caliper guide rod 2;
[0026] When the EMB caliper is in a clamping condition, the caliper guide rod 2 pulls the coil spring 4 to deform the coil spring 4 and generate elastic potential energy. When the EMB caliper is in a releasing condition, the coil spring 4 generates a pulling force on the caliper guide rod 2, so that the caliper guide rod 2 can be pulled back into the caliper bracket 1, so that the caliper guide rod 2 can return to its original position quickly and effectively.
[0027] As the friction plate in the EMB caliper continues to wear, the caliper guide rod 2 will gradually move away from the caliper bracket 1. At this time, the force applied to the coil spring 4 will exceed the calibrated range. At this time, the leaf spring 5 will cross the limit slot 7 under the pulling force of the coil spring 4, and thus get stuck in the next limit slot 7 closer to the caliper guide rod 2, thereby restoring the spring force of the coil spring 4 to within the calibrated range. During the entire life cycle of the EMB caliper, the return force of the coil spring 4 on the caliper guide rod 2 will be limited within the calibrated range, providing a stable and reliable return function.
[0028] Under the general trend of new energy vehicles, original equipment manufacturers are paying more and more attention to reducing drag, because drag will not only lead to reduced cruising range, but may also cause NVH and other problems. The caliper guide rod active return mechanism disclosed in this embodiment can effectively improve drag and bring improvements in cruising range and comfort to the entire vehicle. At the same time, this caliper guide rod active return mechanism can also improve the brake release time and optimize the overall performance of the EMB caliper.
[0029] like Figure 1-2 As shown, a connecting sleeve 3 is provided on the outer wall of the caliper guide rod 2; a conical reserved groove 6 is opened on the inner wall of one side of the caliper bracket 1; a buffer sleeve 8 is provided on the outer wall of the caliper bracket 1; the connecting sleeve 3 can improve the stability of the connection part between the caliper guide rod 2 and the coil spring 4.
[0030] Working principle: When the EMB caliper is in the clamping condition, the caliper guide rod 2 will pull the coil spring 4 to deform the coil spring 4 and generate elastic potential energy. When the EMB caliper is in the releasing condition, the coil spring 4 generates a pulling force on the caliper guide rod 2, so that the caliper guide rod 2 can be pulled back into the caliper bracket 1, so that the caliper guide rod 2 can return to its original position quickly and effectively.
[0031] As the friction plate in the EMB caliper continues to wear, the caliper guide rod 2 will gradually move away from the caliper bracket 1. At this time, the force applied to the coil spring 4 will exceed the calibrated range. At this time, the leaf spring 5 will cross the limit groove 7 under the pulling force of the coil spring 4, and thus get stuck in the next limit groove 7 closer to the caliper guide rod 2, thereby restoring the spring force of the coil spring 4 to within the calibrated range. During the entire life cycle of the EMB caliper, the return force of the coil spring 4 on the caliper guide rod 2 will be limited to the calibrated range.
[0032] Example 2
[0033] An EMB caliper guide rod active return mechanism, such as Figure 3 As shown, this embodiment makes the following improvements on the basis of embodiment 1: the inner wall of the caliper bracket 1 is slidably connected with an elastic telescopic rod 11, the telescopic end of the elastic telescopic rod 11 is fixed with a connecting piece 9, and the outer wall of the elastic telescopic rod 11 is fixed with a connecting ring 13; the outer wall of the connecting ring 13 is fixed with an elastic clamping block 12, and the elastic clamping block 12 is clamped on the inner wall of the limiting groove 7; the outer wall of the connecting piece 9 is provided with a plurality of reserved holes 10; the elastic telescopic rod 11 can pull the caliper guide rod 2 connected to one side of the connecting piece 9 back to the inside of the caliper bracket 1 by its own elastic force, and at the same time, it can be clamped in the corresponding limiting groove 7 by the connecting ring 13 and the elastic clamping block 12 to limit the elastic telescopic rod 11. When the caliper guide rod 2 gradually moves away from the caliper bracket 1, the elastic telescopic rod 11 will pull the elastic clamping block 12 out of the corresponding limiting groove 7 under the pulling force of the caliper guide rod 2, and then continue to be clamped in the next limiting groove 7.
[0034] Working principle: The elastic telescopic rod 11 can pull the caliper guide rod 2 connected to one side of the connecting plate 9 back into the caliper bracket 1 through its own elastic force, and at the same time can be stuck in the corresponding limit groove 7 through the connecting ring 13 and the elastic block 12 to limit the elastic telescopic rod 11. When the caliper guide rod 2 gradually moves away from the caliper bracket 1, the elastic telescopic rod 11 will pull the elastic block 12 out of the corresponding limit groove 7 under the pulling force of the caliper guide rod 2, and then continue to be stuck in the next limit groove 7.
[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An EMB caliper guide rod active return mechanism, comprising a caliper bracket (1), characterized in that: The inner wall of the caliper bracket (1) is slidably connected to a caliper guide rod (2), the inner wall of the caliper bracket (1) is provided with a plurality of limit grooves (7), the inner wall of the limit groove (7) is provided with a leaf spring (5), the outer wall of the leaf spring (5) is provided with a coil spring (4), and the outer wall of one side of the coil spring (4) is provided on the outer wall of one side of the caliper guide rod (2).
2. The EMB caliper guide rod active return mechanism according to claim 1, characterized in that: The outer wall of the caliper guide rod (2) is provided with a connecting sleeve (3).
3. The EMB caliper guide rod active return mechanism according to claim 1, characterized in that: A conical reserved groove (6) is formed on the inner wall of one side of the caliper bracket (1).
4. The EMB caliper guide rod active return mechanism according to claim 3, characterized in that: The outer wall of the caliper bracket (1) is provided with a buffer sleeve (8).
5. The EMB caliper guide rod active return mechanism according to claim 4, characterized in that: An elastic telescopic rod (11) is slidably connected to the inner wall of the caliper bracket (1), a connecting piece (9) is fixed to the telescopic end of the elastic telescopic rod (11), and a connecting ring (13) is fixed to the outer wall of the elastic telescopic rod (11).
6. The EMB caliper guide rod active return mechanism according to claim 5, characterized in that: An elastic block (12) is fixed on the outer wall of the connecting ring (13), the elastic block (12) is clamped on the inner wall of the limiting groove (7), and a plurality of reserved holes (10) are opened on the outer wall of the connecting piece (9).