A piston brake caliper

Abstract

The utility model discloses a piston brake caliper belongs to the technical field of automobile brake, it includes the caliper shell, brake pad, connecting seat and the scraping strip seat, and the symmetry embedding installation has the piston in the both sides piston cavity inside caliper shell, and two groups of connecting seat are fixed respectively and cover in the both sides piston, and the connecting seat passes through the support connecting mounting seat, and the scraping strip seat inserts the mounting seat, and the inboard of scraping strip seat is equipped with the flexible scraper and is located the both sides of brake pad. When working, the piston pushes the brake pad and clamps the brake disc simultaneously, drives the flexible scraper synchronous movement and contacts with the brake disc, and removes dust, silt and rainwater film in time, and the scraping strip seat cooperates with the mounting seat through T type and the limiting ball and inserts, realizes quick replacement and accurate positioning. The utility model realizes the synchronous operation of brake and cleaning, shortens the braking distance in rainy day, reduces the dry road surface brake dust residue, and the scraper assembly maintenance is convenient, and the installation precision is high, is suitable for all kinds of vehicle brake system.

Description

Technical Field

[0001] This utility model relates to the field of automotive braking technology, and in particular to a piston brake caliper. Background Technology

[0002] As the main tool for urban and rural logistics and freight transportation, light trucks often travel on complex and diverse road conditions, frequently traversing muddy dirt roads, gravel roads, and rainy areas. The reliability of the braking system is directly related to transportation efficiency and driving safety. As the core component of the light truck braking system, the performance of the piston brake caliper plays a decisive role in the overall braking effect of the vehicle.

[0003] However, existing light truck piston brake calipers have significant drawbacks in practical use:

[0004] On the one hand, light trucks have a large load capacity and a high braking frequency. During the braking process, the brake discs are prone to accumulating a large amount of dust, sand and other impurities. Especially in muddy or rainy conditions, a thick layer of dirt or water film will form on the surface of the brake discs. Traditional brake calipers lack an effective synchronous cleaning structure. These stains will cause the friction between the brake pads and the brake discs to decrease, and the braking distance to increase. Data shows that brake discs covered with mud can increase the braking distance of light trucks by 15%-20%. In rainy weather, brake slippage may even occur, which seriously threatens driving safety.

[0005] On the other hand, light trucks have high operating intensity and the braking system wears out quickly. As a wear part, the scraper assembly needs to be replaced frequently. However, most existing scrapers are fixed with bolts. When replacing them, multiple fasteners need to be removed and professional tools are required to calibrate the position. In non-professional maintenance scenarios such as logistics stations, the maintenance efficiency is extremely low. At the same time, manual installation can easily lead to insufficient fit between the scraper and the brake disc, which not only affects the cleaning effect, but may also aggravate the wear of the brake disc due to uneven wear of the scraper, increasing maintenance costs.

[0006] Therefore, how to achieve real-time cleaning of the brake disc during braking, while simplifying the replacement and maintenance process of the scraper assembly and improving installation accuracy, has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0007] One objective of this invention is to provide a piston brake caliper that, while performing the braking function, simultaneously cleans the brake disc surface in real time by utilizing the synchronous movement of the brake pads and the flexible scraper, effectively removing dust, mud, and rainwater film. This solves the problem of increased braking distance caused by contamination on the brake disc surface in traditional brake calipers. Furthermore, the combination structure of the T-shaped insert and the limiting ball enables blind-mounted, quick replacement of the scraper assembly, significantly shortening installation time, ensuring the installation accuracy of the scraper and brake pads, and improving maintenance convenience, thereby overcoming many shortcomings of existing technologies.

[0008] A piston brake caliper according to an embodiment of the present invention includes a caliper housing, a brake pad, a connecting seat, and a scraper seat. Several sets of pistons are symmetrically embedded in the piston cavities on both sides inside the caliper housing. There are two sets of connecting seats, which are respectively fixedly sleeved on the pistons on both sides inside the caliper housing. Brackets are symmetrically welded to the bottom of both sides of the connecting seat, and a mounting seat is integrally formed at the other end of the bracket. The scraper seat is inserted into the mounting seat, and a flexible scraper is embedded in the inner side of the scraper seat. The two sets of mounting seats are respectively disposed on both sides of the brake pad.

[0009] Furthermore, the brake pads are in two sets, and both sets of brake pads are fixedly connected to the pistons at both ends of the inner side of the caliper housing via clips, and the two sets of brake pads are arranged symmetrically.

[0010] Furthermore, a T-shaped slot is provided on the inner side of the mounting base, and a T-shaped insert is integrally formed on the rear wall of the scraper base. The T-shaped insert is inserted into the T-shaped slot, and the scraper base can be detachably installed in the mounting base by the cooperation of the T-shaped insert and the T-shaped slot.

[0011] Furthermore, grooves are symmetrically provided on the lower rear wall of the scraper seat and on both sides of the T-shaped insert. A spring is fixedly installed in the groove, and a limit bead is fixedly installed on the top of the spring. Limit slots are symmetrically provided on the lower inner side of the mounting seat and on both sides of the T-shaped slot. The limit bead can be pushed into the limit slot by the spring.

[0012] Furthermore, a liquid inlet is provided on one side of the outer wall of the caliper housing, which is connected to a piston chamber on one side inside the caliper housing. An infusion pipe is installed on the other side of the outer wall of the caliper housing, and the piston chambers on both sides inside the caliper housing can be connected through the infusion pipe.

[0013] Furthermore, mounting posts are symmetrically arranged at both ends of one side of the bottom of the caliper housing, and mounting holes are provided in the mounting posts.

[0014] Furthermore, the number of piston chambers on both sides of the caliper housing is three, and the number of pistons is the same as the number of piston chambers.

[0015] Furthermore, the flexible scraper is made of heat-resistant nitrile rubber with a thickness of 3-5mm, and the distance between its inner side and the side of the brake pad is 0.5-1mm.

[0016] Furthermore, an annular positioning groove is provided on the end face of the piston near the brake pad, and the brake pad can be inserted into the positioning groove through the protruding locking block on the back.

[0017] Furthermore, the two sets of connecting seats are respectively fixedly connected to the middle piston of the three sets of pistons on both sides inside the caliper housing, and the two sets of connecting seats are symmetrically distributed with respect to the longitudinal center plane of the caliper housing.

[0018] The beneficial effects of this utility model are:

[0019] 1. This utility model utilizes the synchronous movement mechanism of the brake pads and the flexible scraper. When the piston pushes the brake pads to clamp the brake disc, the scraper moves inward with the braking action and comes into close contact with the surface of the brake disc. With the dual action of the rotational force of the brake disc and the flexible contact of the scraper, the dust, mud, and rainwater film attached to the surface can be scraped off in time, thereby achieving cleaning while braking. This solves the problem that the braking distance of traditional brake calipers is longer due to the accumulation of dirt on the surface of the brake disc in muddy or rainy conditions. It greatly shortens the braking distance in rainy weather and effectively reduces the amount of residual braking dust on dry roads.

[0020] 2. In this utility model, the scraper seat and the mounting seat are combined by a T-shaped insert and a limiting bead, which realizes the blind installation and quick replacement of the scraper assembly. Compared with the traditional bolt fixing method, the installation time is greatly shortened. The limiting bead can automatically embed into the limiting groove under the action of the spring, realize quick positioning, and ensure the parallelism error between the scraper and the brake pad is completely resolved. This solves the position deviation problem that is easy to occur during manual installation, and improves both maintenance convenience and installation accuracy. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of a piston brake caliper proposed in this utility model;

[0023] Figure 2 This is a bottom view schematic diagram of the piston brake caliper proposed in this utility model;

[0024] Figure 3 This is a schematic diagram of the brake pad removal structure of a piston brake caliper proposed in this utility model;

[0025] Figure 4 This is a schematic diagram showing the disassembled structure of the mounting base and scraper seat of a piston brake caliper according to the present invention.

[0026] Figure 5 This is a schematic diagram of the back structure of the scraper seat of a piston brake caliper proposed in this utility model.

[0027] In the diagram: 1. Caliper housing; 2. Inlet; 3. Infusion pipe; 4. Brake pad; 5. Mounting post; 6. Connecting seat; 7. Scraper seat; 8. Piston; 9. Bracket; 10. Mounting seat; 11. T-slot; 12. Limiting groove; 13. T-block; 14. Groove; 15. Spring; 16. Limiting bead; 17. Flexible scraper. Detailed Implementation

[0028] To make the technical means and objectives and effects of this utility model easier to understand, the embodiments of this utility model will be described in detail below with reference to specific figures.

[0029] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] like Figure 1-5As shown, this utility model discloses a piston brake caliper, including a caliper housing 1, a brake pad 4, a connecting seat 6, and a scraper seat 7. Several sets of pistons 8 are symmetrically embedded in the piston cavities on both sides inside the caliper housing 1. There are two sets of connecting seats 6, which are respectively fixedly sleeved on the pistons 8 on both sides inside the caliper housing 1. Brackets 9 are symmetrically fixedly welded to the bottom of both sides of the connecting seats 6. The other end of the bracket 9 is integrally formed with a mounting seat 10. The scraper seat 7 is inserted into the mounting seat 10. A flexible scraper 17 is embedded in the inner side of the scraper seat 7. The two sets of mounting seats 10 are respectively arranged on both sides of the brake pad 4.

[0033] In operation, the piston brake caliper disclosed in this application, when braking is required, hydraulic oil enters the piston cavity on one side of the caliper housing 1 through the inlet 2, thereby pushing the piston 8 on that side to move towards the brake pad 4. Simultaneously, hydraulic oil flows into the piston cavity on the other side through the inlet pipe 3, pushing the piston 8 on the other side to move synchronously towards the brake pad 4. The pistons 8 on both sides work together to clamp the two sets of brake pads 4 onto the brake disc, achieving the braking function. During the movement of the piston 8, the connecting seat 6, which is fixedly connected to the piston 8, moves synchronously. The connecting seat 6 drives the mounting seat 10 and the scraper seat 7 to move through the bracket 9, allowing the flexible scraper 17 on the inner side of the scraper seat 7 to contact the side of the brake disc and scrape away impurities from the side of the brake disc. After braking, the hydraulic oil flows back, and the piston 8 retracts into the piston cavity under the action of its own return structure, causing the connecting seat 6, bracket 9, mounting seat 10, and scraper seat 7 to reset. The flexible scraper 17 separates from the side of the brake disc, waiting for the next braking.

[0034] The piston brake caliper described in this application is configured with two sets of connecting seats 6 that are respectively connected to the pistons 8 on both sides. The bracket 9 and the mounting seat 10 drive the scraper seat 7 and the flexible scraper 17 to move, which realizes the function of cleaning the side of the brake pad 4 simultaneously when the piston 8 is working. This effectively avoids impurities adhering to the side of the brake pad 4 and affecting the braking effect. At the same time, the scraper seat 7 and the mounting seat 10 adopt an insert connection, which facilitates the replacement and maintenance of the scraper seat 7 and the flexible scraper 17 in the future, improving the reliability and maintenance convenience of the brake caliper.

[0035] As a preferred example of this application, the number of brake pads 4 is two sets, and both sets of brake pads 4 are fixedly connected to the pistons 8 at both ends of the inner side of the caliper housing 1 by snap-fit, and the two sets of brake pads 4 are symmetrically arranged. This arrangement ensures that the braking force on both sides is balanced during braking, making the braking process smoother, while the snap-fit ​​connection method facilitates the installation and replacement of brake pads 4.

[0036] As a preferred example of this application, a T-shaped slot 11 is provided on the inner side of the mounting base 10, and a T-shaped insert 13 is integrally formed on the rear wall of the scraper seat 7. The T-shaped insert 13 is inserted into the T-shaped slot 11, and the scraper seat 7 can be detachably installed within the mounting base 10 through the cooperation of the T-shaped insert 13 and the T-shaped slot 11. The T-shaped structure ensures the stability of the connection between the scraper seat 7 and the mounting base 10, preventing the scraper seat 7 from falling off during operation. At the same time, the detachable design allows for easy replacement of the scraper seat 7 when the flexible scraper 17 is worn or damaged, reducing maintenance costs.

[0037] As a preferred example of this application, the scraper seat 7 has symmetrically arranged grooves 14 on the lower rear wall of the scraper seat 7 and on both sides of the T-shaped insert 13. A spring 15 is fixedly installed in the groove 14, and a limiting bead 16 is fixedly installed at the top of the spring 15. A limiting groove 12 is symmetrically arranged on the lower inner side of the mounting seat 10 and on both sides of the T-shaped slot 11. The limiting bead 16 can be pushed into the limiting groove 12 by the spring 15. When the scraper seat 7 is inserted into the mounting seat 10, the limiting bead 16 is embedded in the limiting groove 12 under the action of the spring 15, which axially limits the scraper seat 7, further enhancing the reliability of the connection between the scraper seat 7 and the mounting seat 10, and avoiding axial movement of the scraper seat 7 during braking, which would affect the scraping effect. When it is necessary to disassemble the scraper seat 7, only a certain pulling force needs to be applied to make the limiting bead 16 compress the spring 15 and disengage from the limiting groove 12, which is simple to operate.

[0038] As a preferred example of this application, a fluid inlet 2 is provided on one side of the outer wall of the caliper housing 1. The fluid inlet 2 communicates with a piston cavity on one side inside the caliper housing 1. A fluid delivery pipe 3 is installed on the other side of the outer wall of the caliper housing 1, and the piston cavities on both sides inside the caliper housing 1 can be connected through the fluid delivery pipe 3. The fluid inlet 2 is used to connect hydraulic oil, and the fluid delivery pipe 3 ensures that the hydraulic oil in the piston cavities on both sides can flow synchronously, so that the pistons 8 on both sides can move synchronously, ensuring that the clamping force of the brake pads 4 on the brake disc is uniform and improving the stability of braking.

[0039] As a preferred example of this application, the caliper housing 1 has mounting posts 5 symmetrically arranged at both ends on one side of its bottom, and mounting holes are formed in the mounting posts 5. The mounting posts 5 and mounting holes allow the piston brake caliper to be securely installed on the vehicle's braking system, ensuring the stability of the caliper housing 1 during braking and preventing braking performance from being affected by insecure installation.

[0040] As a preferred example of this application, the number of piston cavities on both sides of the caliper housing 1 is three, and the number of pistons 8 is the same as the number of piston cavities. The arrangement of three sets of pistons 8 can increase the number of thrust points on the brake pad 4, making the brake pad 4 more evenly stressed, reducing uneven wear on the brake pad 4, and extending the service life of the brake pad 4.

[0041] As a preferred example of this application, the flexible scraper 17 is made of heat-resistant nitrile rubber with a thickness of 3-5 mm, and the distance between its inner side and the side of the brake pad 4 is 0.5-1 mm. The heat-resistant nitrile rubber has good wear resistance and temperature resistance, and can adapt to the high-temperature environment during braking. At the same time, the 0.5-1 mm distance ensures that the flexible scraper 17 does not contact the brake pad 4, avoiding unnecessary wear.

[0042] As a preferred example of this application, an annular positioning groove is provided on the end face of the piston 8 near the brake pad 4, and the brake pad 4 can be inserted into the positioning groove by a protruding locking block on its back. The cooperation between the annular positioning groove and the protruding locking block can position the brake pad 4, ensuring the accuracy of the connection between the brake pad 4 and the piston 8, preventing the brake pad 4 from shifting during the force process, and ensuring the stability of the braking effect.

[0043] As a preferred example of this application, the two sets of connecting seats 6 are respectively fixedly connected to the middle piston 8 of the three sets of pistons 8 on both sides inside the caliper housing 1, and the two sets of connecting seats 6 are symmetrically distributed with respect to the longitudinal center plane of the caliper housing 1. This connection method allows the connecting seats 6 to move more stably with the piston 8, while the symmetrical distribution ensures that the scraper seats 7 and flexible scraper 17 on both sides have a consistent scraping effect on the side of the brake pad 4, improving the overall cleaning effect.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A piston brake caliper, characterized in that, The caliper housing (1), brake pad (4), connecting seat (6), and scraper seat (7) are included. Several sets of pistons (8) are symmetrically embedded in the piston cavities on both sides inside the caliper housing (1). There are two sets of connecting seats (6). The two sets of connecting seats (6) are respectively fixedly mounted on the pistons (8) on both sides inside the caliper housing (1). Brackets (9) are symmetrically fixedly welded to the bottom of both sides of the connecting seats (6). The other end of the brackets (9) is integrally formed with a mounting seat (10). The scraper seat (7) is inserted into the mounting seat (10). A flexible scraper (17) is embedded in the inner side of the scraper seat (7). The two sets of mounting seats (10) are respectively set on both sides of the brake pad (4).

2. A piston brake caliper according to claim 1, characterized in that, The number of brake pads (4) is two sets. Both sets of brake pads (4) are fixedly connected to the pistons (8) at both ends of the inner side of the caliper housing (1) by a buckle, and the two sets of brake pads (4) are arranged symmetrically.

3. A piston brake caliper according to claim 1, characterized in that, The mounting base (10) has a T-shaped slot (11) on its inner side. The scraper base (7) has a T-shaped insert (13) integrally formed on its rear wall. The T-shaped insert (13) is inserted into the T-shaped slot (11). The scraper base (7) can be detachably installed in the mounting base (10) by the cooperation of the T-shaped insert (13) and the T-shaped slot (11).

4. A piston brake caliper according to claim 3, characterized in that, The scraper seat (7) has grooves (14) symmetrically arranged below the rear wall and on both sides of the T-shaped insert (13). A spring (15) is fixedly installed in the groove (14). A limit bead (16) is fixedly installed at the top of the spring (15). A limit groove (12) is symmetrically arranged below the inner side of the mounting seat (10) and on both sides of the T-shaped slot (11). The limit bead (16) can be pushed into the limit groove (12) by the spring (15).

5. A piston brake caliper according to claim 1, characterized in that, The caliper housing (1) has an inlet (2) on one side of its outer wall. The inlet (2) is connected to the piston chamber on one side of the caliper housing (1). An infusion pipe (3) is installed on the other side of the outer wall of the caliper housing (1). The piston chambers on both sides of the caliper housing (1) can be connected through the infusion pipe (3).

6. A piston brake caliper according to claim 1, characterized in that, The caliper housing (1) has mounting posts (5) symmetrically arranged at both ends on one side of the bottom, and mounting holes are provided in the mounting posts (5).

7. A piston brake caliper according to claim 1, characterized in that, The number of piston cavities on both sides of the caliper housing (1) is three, and the number of pistons (8) is the same as the number of piston cavities.

8. A piston brake caliper according to claim 1, characterized in that, The flexible scraper (17) is made of heat-resistant nitrile rubber with a thickness of 3-5mm, and the distance between its inner side and the side of the brake pad (4) is 0.5-1mm.

9. A piston brake caliper according to claim 1, characterized in that, The piston (8) has an annular positioning groove on one end face near the brake pad (4), and the brake pad (4) can be embedded into the positioning groove through the protruding locking block on the back.

10. A piston brake caliper according to claim 7, characterized in that, The two sets of connecting seats (6) are fixedly connected to the middle piston (8) of the three sets of pistons (8) on both sides inside the caliper housing (1), and the two sets of connecting seats (6) are symmetrically distributed with respect to the longitudinal center plane of the caliper housing (1).

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