Electronic caliper piston return tool

Abstract

The utility model belongs to the technical field of automobile braking, and discloses an electronic caliper piston return tool. The electronic caliper piston returning tool comprises a stopping piece and a pushing assembly. The stopping piece is used for being placed in the pushing space and abutting against the limiting part. The pushing assembly penetrates through the stop piece and is in threaded connection with the stop piece. The pushing assembly extends in the front-back direction, and the free end of the pushing assembly is used for abutting against the piston. According to the electronic caliper piston return tool, the stop piece and the pushing assembly are in threaded connection together, the stop piece is placed in the pushing space, at the moment, it is guaranteed that the distance of the pushing assembly on the side, close to the piston, of the stop piece is smaller than the distance of the pushing space, the whole return tool can be placed in the pushing space together, and the stop piece is fixed with the hand; the pushing assembly is screwed, so that the pushing assembly gradually abuts against the piston, meanwhile, the stopping piece abuts against the limiting part, at the moment, the pushing assembly continues to be screwed, the piston is forcibly pushed back into the mounting part through the force of the pushing assembly, and therefore returning of the piston is achieved.

Description

Technical Field

[0001] This utility model relates to the field of automotive braking technology, and in particular to an electronic caliper piston return tool. Background Technology

[0002] As automotive chassis become increasingly electrified, the demand for intelligent control of chassis braking is rising. Currently, the actuation structure at the wheel ends of chassis brakes still primarily relies on traditional brake calipers, generating braking force through hydraulic transmission. However, because traditional brake calipers themselves cannot generate braking force and cannot autonomously control the clamping and release of braking force, they cannot meet the requirements of intelligent control. Therefore, the electromechanical braking system (EMB) has emerged. Currently, most calipers on the market only have parking EPB (Electronic Braking Brake) systems; electromechanical braking systems have not yet been mass-produced.

[0003] In current electronic clamping (EMB) systems, the friction plates inevitably wear down during use, resulting in a longer piston stroke during clamping. After replacing the friction plates, the disc clearance becomes insufficient, requiring the entire EMB caliper to be disassembled and the piston to return to the zero position via software control. For EMB products, a diagnostic tool is typically needed to control the forward and backward movement of the friction plates for replacement. However, in certain special cases where no such diagnostic tool is available, friction plate replacement may be impossible.

[0004] Therefore, there is an urgent need to design an electronic caliper piston return fixture to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an electronic caliper piston return tool. When the piston needs to return to its original position, the operator does not need to remove the entire caliper from the brake disc. He only needs to loosen a bracket bolt and rotate the caliper body to perform the piston return operation. It can also be used as an emergency handling tool when there is a problem inside the caliper and the software cannot control the piston to return automatically.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An electronic caliper piston return fixture, the electronic caliper including a body and a piston, the body having an upwardly protruding limiting part and a mounting part spaced apart in a front-rear direction, a pushing space being formed between the limiting part and the mounting part, the piston being mounted on the mounting part and facing the limiting part, the electronic caliper piston return fixture including:

[0008] A stop member is used to be placed in the aforementioned pushing space and abut against the aforementioned limiting portion;

[0009] The push assembly passes through the stop and is threadedly connected to the stop. The push assembly extends in the front-rear direction and its free end is used to abut against the piston.

[0010] As an optional solution, the aforementioned driving components include:

[0011] The screw extends along the aforementioned front-back direction and is threadedly connected to the aforementioned stop member;

[0012] The top block is rotatably connected to the end of the screw near the piston and can abut against the piston.

[0013] As an alternative, the screw and the top block are rotatably connected via bearings.

[0014] As an alternative, the end of the screw closest to the piston is defined as the pushing end. One of the pushing end and the top block has a groove, and the other has a protrusion. The outer ring of the bearing is embedded in the groove, and the inner ring of the bearing is sleeved on the protrusion.

[0015] As an optional solution, the aforementioned screw includes:

[0016] A screwing part, which extends along the front-back direction and is threadedly connected to the stop member;

[0017] The reinforcing part has a diameter larger than that of the screwing part and is fixedly connected to the end of the screwing part near the piston. The groove is formed on the side of the reinforcing part away from the screwing part.

[0018] As an alternative, the aforementioned bearing is a ball bearing.

[0019] As an alternative, the aforementioned actuation assembly includes a screw and a hand lever, the screw extending in the aforementioned front-rear direction and threadedly connected to the aforementioned stop member, and the hand lever being angledly connected to the end of the screw opposite to the aforementioned piston.

[0020] As an alternative, a radially recessed hole is provided on the aforementioned screw, into which the aforementioned hand lever can be inserted and removed; and / or

[0021] The end of the screw that is away from the piston is polygonal in shape.

[0022] As an alternative, the diameters at both ends of the aforementioned handheld lever are larger than the diameter of its middle portion.

[0023] As an alternative, the aforementioned stop is rectangular with chamfered corners at all four edges.

[0024] The beneficial effects of this utility model are as follows:

[0025] This utility model provides an electronic caliper piston return fixture. In use, the stop and the push assembly are threaded together. The stop is placed into the push space. At this time, it must be ensured that the distance of the push assembly on the side of the stop near the piston is less than the distance of the push space so that the entire return fixture can be placed into the push space together. The stop is fixed by hand, and the push assembly is turned so that the push assembly gradually abuts against the piston. Continue to turn the push assembly so that the push assembly abuts against the piston, and at the same time the stop abuts against the limiting part. At this time, continue to turn the push assembly. Since the position of the stop can no longer move in the back and forth direction, the force of the push assembly forces the piston back into the mounting part, thereby realizing the piston return. This does not rely on software control or diagnostic instrument diagnosis. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the electronic caliper and electronic caliper piston return fixture provided in this embodiment of the utility model;

[0027] Figure 2 This is a partial cross-sectional view of the electronic caliper piston return fixture provided in this embodiment of the utility model;

[0028] Figure 3 This is an exploded view of the electronic caliper piston return tooling provided in this embodiment of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the electronic caliper piston return tool provided in this embodiment of the utility model.

[0030] In the picture:

[0031] 900. Electronic caliper; 910. Body; 911. Limiting part; 912. Mounting part; 913. Pushing space; 920. Piston;

[0032] 10. Stop; 20. Push assembly; 21. Screw; 211. Tightening part; 2111. Insertion hole; 212. Reinforcing part; 2121. Groove; 22. Top block; 221. Protrusion; 23. Bearing; 24. Hand handle. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] like Figure 1 As shown, the electronic caliper 900 includes a body 910 and a piston 920. The body 910 is provided with a limiting part 911 and a mounting part 912 that are spaced apart in the front-rear direction. A pushing space 913 is formed between the limiting part 911 and the mounting part 912. The piston 920 is mounted on the mounting part 912 and is positioned toward the limiting part 911.

[0038] This embodiment provides an electronic caliper piston return fixture. When the piston 920 needs to return to its original position, the operator does not need to remove the entire caliper from the brake disc. Simply loosening a bracket bolt and rotating the caliper body allows the piston 920 to return to its original position. It can also serve as an emergency tool when there is a problem with the caliper's internal components and the software cannot control the piston 920 to return automatically. Figure 1 and Figure 2As shown, the electronic caliper piston return fixture includes a stop 10 and a push assembly 20. The stop 10 is placed in the push space 913 and abuts against the limiting part 911. The push assembly 20 passes through the stop 10 and is threadedly connected to the stop 10. The push assembly 20 extends in the front-rear direction and its free end abuts against the piston 920.

[0039] In use, the stop 10 and the push assembly 20 of the above-mentioned electronic caliper piston return fixture are threaded together. The stop 10 is placed into the push space 913. At this time, it must be ensured that the distance of the push assembly 20 on the side of the stop 10 near the piston 920 is less than the distance of the push space 913 so that the entire return fixture can be placed into the push space 913 together. The stop 10 is fixed by hand, and the push assembly 20 is turned so that the push assembly 20 gradually abuts against the piston 920. The push assembly 20 is turned further until it abuts against the piston 920, and at the same time the stop 10 abuts against the limiting part 911. At this time, the push assembly 20 is turned further. Since the position of the stop 10 can no longer move in the back and forth direction, the force of the push assembly 20 forces the piston 920 back into the mounting part 912, thereby realizing the return of the piston 920. This does not rely on software control or diagnostic instrument diagnosis.

[0040] Optionally, such as Figures 1-3 As shown, the pushing assembly 20 includes a screw 21 and a top block 22. The screw 21 extends in the front-rear direction and is threadedly connected to the stop member 10. The top block 22 is rotatably connected to the end of the screw 21 near the piston 920. With the above arrangement, when the screw 21 rotates, it generates a thrust towards the piston 920. Since the screw 21 and the top block 22 are rotatably connected, the top block 22 does not rotate, preventing the contact position between the pushing assembly 20 and the piston 920 from rotating when pushing the piston 920, thus preventing wear on the end face of the piston 920.

[0041] Optionally, such as Figure 2 As shown, the screw 21 and the top block 22 are rotatably connected via a bearing 23. The bearing 23 is readily available and easy to install. Furthermore, the bearing 23 is a ball bearing.

[0042] Optionally, such as Figure 2 and Figure 3 As shown, the end of the screw 21 closest to the piston 920 is defined as the pushing end. One of the pushing end and the top block 22 has a groove 2121, and the other has a protrusion 221. The outer ring of the bearing 23 is embedded in the groove 2121, and the inner ring of the bearing 23 is fitted over the protrusion 221. In this embodiment, the screw 21 has a groove 2121, the outer ring of the bearing 23 is installed in the groove 2121, and the top block 22 has a protrusion 221. In another embodiment, the top block 22 may have a groove 2121, and the screw 21 may have a protrusion 221 that fits the inner ring of the bearing 23; this is not limited here.

[0043] Optionally, such as Figure 2 As shown, the screw 21 includes a screwing portion 211 and a reinforcing portion 212. The screwing portion 211 extends in the front-rear direction and is threadedly connected to the stop member 10. The reinforcing portion 212 has a larger diameter than the screwing portion 211 and is fixedly connected to the end of the screwing portion 211 near the piston 920. A groove 2121 is formed on the side of the reinforcing portion 212 away from the screwing portion 211. Because the groove 2121 is formed, the strength of the screw 21 at this end will be affected. This design increases the diameter of the reinforcing portion 212, ensuring that the wall thickness of the groove 2121 is still thick enough to ensure the installation strength of the screw 21.

[0044] Optionally, the pushing assembly 20 also includes a handle 24. The screw 21 extends in the front-rear direction and is threadedly connected to the stop member 10. The handle 24 is connected at an angle to the end of the screw 21 opposite to the piston 920. In this embodiment, the handle 24 is arranged perpendicularly to the screw 21. With the above arrangement, the user can easily hold both ends of the handle 24 to turn the screw 21, which is more labor-saving.

[0045] Optionally, such as Figure 3 As shown, a radial insertion hole 2111 is provided on the screw 21, and the hand handle 24 can be inserted into the insertion hole 2111. Thus, when not in use, the hand handle 24 can be pulled out of the insertion hole 2111 and stored separately to prevent the hand handle 24 from being perpendicular to the screw 21 after installation and occupying a large storage space.

[0046] Optionally, the diameters at both ends of the handheld lever 24 are larger than the diameter at the middle, making it easier to hold.

[0047] Optionally, to facilitate the insertion and removal of the hand lever 24, one of the larger diameter ends of the hand lever 24 can be detachably connected to the smaller diameter part. Specifically, it can be a threaded connection, a snap-fit ​​connection, or other forms, which are not limited here.

[0048] Optionally, such as Figure 1 As shown, the end of the screw 21 facing away from the piston 920 has a polygonal structure. Therefore, if a wrench is available, the operator can place it outside the polygonal body to tighten the screw 21. In other words, the screw 21 can be easily tightened in two ways, allowing the operator to choose flexibly according to the situation.

[0049] Optionally, such as Figure 3 and Figure 4 As shown, the stop 10 is rectangular with chamfered corners. This prevents the sharp corners of the stop 10 from causing scratches to people or objects.

[0050] It should be noted that, as Figure 1As shown, the middle part of the limiting part 911 avoids the screw 21, so that the screw 21 can extend in to face the piston 920.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An electronic caliper piston return fixture, the electronic caliper (900) comprising a body (910) and a piston (920), the body (910) having an upwardly protruding limiting portion (911) and a mounting portion (912) spaced apart along the front-rear direction, a pushing space (913) being formed between the limiting portion (911) and the mounting portion (912), the piston (920) being mounted on the mounting portion (912) and facing the limiting portion (911), characterized in that, The electronic caliper piston return fixture includes: A stop (10) is placed in the pushing space (913) and abuts against the limiting part (911); A push assembly (20) passes through the stop (10) and is threadedly connected to the stop (10). The push assembly (20) extends in the front-rear direction and its free end is used to abut against the piston (920).

2. The electronic caliper piston return fixture according to claim 1, characterized in that, The actuation component (20) includes: The screw (21) extends along the front-rear direction and is threadedly connected to the stop (10); The top block (22) is rotatably connected to one end of the screw (21) near the piston (920) and can abut against the piston (920).

3. The electronic caliper piston return fixture according to claim 2, characterized in that, The screw (21) and the top block (22) are rotatably connected by a bearing (23).

4. The electronic caliper piston return fixture according to claim 3, characterized in that, The end of the screw (21) near the piston (920) is defined as the pushing end. One of the pushing end and the top block (22) has a groove (2121) and the other has a protrusion (221). The outer ring of the bearing (23) is embedded in the groove (2121) and the inner ring of the bearing (23) is sleeved on the protrusion (221).

5. The electronic caliper piston return fixture according to claim 4, characterized in that, The screw (21) includes: A screwing part (211) extends along the front-back direction and is threadedly connected to the stop (10); The reinforcing part (212) has a diameter larger than that of the screwing part (211) and is fixedly connected to one end of the screwing part (211) near the piston (920). The groove (2121) is formed on the side of the reinforcing part (212) away from the screwing part (211).

6. The electronic caliper piston return fixture according to claim 3, characterized in that, The bearing (23) is a ball bearing.

7. The electronic caliper piston return fixture according to any one of claims 1-6, characterized in that, The pushing assembly (20) includes a screw (21) and a hand lever (24), the screw (21) extending in the front-rear direction and threadedly connected to the stop (10), and the hand lever (24) being angled to the end of the screw (21) away from the piston (920).

8. The electronic caliper piston return fixture according to claim 7, characterized in that, A radially extending insertion hole (2111) is provided on the screw (21), and the hand handle (24) can be inserted into the insertion hole (2111); and / or The end of the screw (21) away from the piston (920) is polygonal.

9. The electronic caliper piston return fixture according to claim 8, characterized in that, The diameters at both ends of the handheld lever (24) are larger than the diameter of its middle part.

10. The electronic caliper piston return fixture according to any one of claims 1-6, characterized in that, The stop (10) is rectangular and has chamfered corners at all four corners.

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