Parking electronic caliper

Abstract

The utility model relates to a parking electronic caliper which comprises a caliper body, friction plates, a piston and a screw, the caliper body is provided with a containing cavity, the friction plates are arranged on the two sides of the containing cavity respectively, a braking space used for containing an undercarriage is formed between the friction plates, the piston drives the friction plates to move and brake the undercarriage, and the parking electronic caliper comprises a threaded sleeve. The other side, opposite to the friction plate, of the piston is provided with a sliding groove for the threaded sleeve to slide, the other side, opposite to the groove bottom of the sliding groove, of the threaded sleeve is provided with a threaded groove in threaded fit with the threaded rod, and the threaded sleeve slides in the sliding groove through the rotating threaded rod.

Description

Technical Field

[0001] The utility model relates to an electronic caliper, in particular to an electronic parking caliper. Background Art

[0002] The electronic parking caliper is a device used in modern cars to achieve parking brakes, which is used to clamp the brake disc to brake the vehicle. It replaces the traditional mechanical handbrake and realizes the parking brake function through an electronic control system.

[0003] The current electronic parking caliper uses a motor to drive the screw to rotate, thereby directly driving the piston to move, producing a braking effect. Since the screw directly drives the piston to move, after long-term use, the threads on the screw are prone to wear, affecting the parking braking effect and posing a safety hazard. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an electronic parking caliper.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: including a caliper body, a friction plate, a piston and a screw rod, a accommodating cavity is arranged on the caliper body, the friction plates are respectively arranged on both sides of the accommodating cavity, a braking space for accommodating a vehicle disc is provided between the friction plates, the piston drives the friction plate to move and forms a brake on the vehicle disc, including a screw sleeve, a sliding groove for sliding the screw sleeve is arranged on the other side of the piston relative to the friction plate, a thread groove matching with the screw thread is arranged on the other side of the screw sleeve relative to the bottom of the sliding groove, and the rotating screw rod causes the screw sleeve to slide in the sliding groove.

[0006] By adopting the above technical solution, when parking brake is required, the motor drives the screw to rotate, so that the sleeve moves along the sliding groove and pushes the piston to move, thereby driving the friction plate to move toward the disc, and the two friction plates are against the disc, thereby achieving the purpose of parking. By adding a sleeve, the screw drives the piston to move through the sleeve, thereby reducing the wear of the screw thread on the screw in the process of driving the piston.

[0007] The utility model is further configured as follows: an extension groove is also provided in the piston, a guide slope is provided between the extension groove and the sliding groove, and the diameter of the extension groove is smaller than the diameter of the sliding groove, and a matching slope matched with the guide slope is provided on the screw sleeve relatively close to the bottom of the sliding groove.

[0008] By adopting the above technical solution, when the screw sleeve moves, the matching inclined surface and the guide inclined surface abut against each other, and then the piston is driven to move.

[0009] The utility model is further configured as follows: the screw sleeve is provided with a connecting hole arranged along the direction of the sliding groove, and the thread groove is arranged in the connecting hole.

[0010] The utility model is further configured as follows: it also includes a support rod, both sides of the support rod are respectively arranged on both sides of the accommodating cavity, and the accommodating cavity is provided with reinforcing ribs corresponding to the support rod.

[0011] By adopting the above technical solution, the arrangement of the support rods and the reinforcing ribs increases the overall strength.

[0012] The utility model is further configured to include: a reset member, which is arranged in the accommodating cavity and is used to drive the friction plate to reset to both sides of the accommodating cavity, the reset member includes a main body, a fixing portion and a reset portion, the main body is arranged along the arrangement direction of the support rod, the fixing portion is provided with a fixing hole and is used to fix the reset member to the caliper body, and the reset portion abuts against the friction plate and constitutes the reset of the friction plate.

[0013] By adopting the above technical solution and setting the reset member, when the screw rod rotates in the opposite direction, the screw sleeve moves in the opposite direction, and the reset member resets the friction plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 A cross-sectional view of the utility model as a whole;

[0016] Figure 3 For this utility model Figure 2 A partial enlarged view of middle A;

[0017] Figure 4 It is a structural schematic diagram of the screw sleeve of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the reset member of the utility model;

[0019] Figure 6 This is a structural schematic diagram of the utility model from another perspective. In the figure: 1, caliper body; 11, accommodating chamber; 12, brake space; 2, friction plate; 3, piston; 31, sliding groove; 32, extension groove; 33, guide slope; 4, screw rod; 5, screw sleeve; 51, thread groove; 52, matching slope; 53, connecting hole; 6, support rod; 7, reinforcing rib; 8, reset member; 81, main body; 82, fixing part; 83, reset part; 84, fixing hole. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] like Figure 1-6 As shown, the utility model discloses an electronic parking caliper, including a caliper body 1, a friction plate 2, a piston 3 and a screw 4. The caliper body 1 is provided with an accommodating cavity 11, and the friction plates 2 are respectively arranged on both sides of the accommodating cavity 11. There is a braking space 12 for accommodating a vehicle disc between the friction plates 2. The piston 3 drives the friction plates 2 to move and brake the vehicle disc, including a screw sleeve 5. The other side of the piston 3 relative to the friction plate 2 is provided with a sliding groove 31 for the screw sleeve 5 to slide. The other side of the screw sleeve 5 relative to the bottom of the sliding groove 31 is provided with a The thread groove 51 of the screw rod 4 is matched with the thread. The rotating screw rod 4 causes the screw sleeve 5 to slide in the sliding groove 31. When parking brake is required, the motor drives the screw rod 4 to rotate, so that the screw sleeve 5 moves along the sliding groove 31 and pushes the piston 3 to move, thereby driving the friction plate 2 to move toward the disc. The two friction plates 2 are against the disc, thereby achieving the purpose of parking. By adding the screw sleeve 5, the screw rod 4 drives the piston 3 to move through the screw sleeve 5, thereby reducing the wear of the screw rod 4 on the thread in the process of driving the piston 3.

[0023] An extension groove 32 is also provided in the piston 3, a guide bevel 33 is provided between the extension groove 32 and the sliding groove 31, and the diameter of the extension groove 32 is smaller than the diameter of the sliding groove 31, and a matching bevel 52 matched with the guide bevel 33 is provided on the screw sleeve 5 relatively close to the bottom direction of the sliding groove 31. When the screw sleeve 5 moves, the matching bevel 52 abuts against the guide bevel 33, and then drives the piston 3 to move.

[0024] The screw sleeve 5 is provided with a connecting hole 53 arranged along the direction of the sliding groove 31 , and the thread groove 51 is arranged in the connecting hole 53 .

[0025] The structure further comprises a support rod 6, both sides of which are respectively arranged on both sides of the accommodating cavity 11, and the accommodating cavity 11 is provided with reinforcing ribs 7 corresponding to the support rod 6, and the arrangement of the support rod 6 and the reinforcing ribs 7 increases the overall strength.

[0026] It also includes a reset member 8, which is arranged in the accommodating chamber 11 and is used to drive the friction plate 2 to reset to both sides of the accommodating chamber 11. The reset member 8 includes a main body 81, a fixing portion 82 and a reset portion 83. The main body 81 is arranged along the arrangement direction of the support rod 6. The fixing portion 82 is provided with a fixing hole 84 and is used to fix the reset member 8 to the caliper body 1. The reset portion 83 abuts against the friction plate 2 and constitutes the reset of the friction plate 2. The reset member 8 is arranged so that when the screw rod 4 rotates in the opposite direction, the screw sleeve 5 moves in the opposite direction, and the reset member 8 resets the friction plate 2.

[0027] Working process: when parking brake is needed, the motor drives the screw 4 to rotate, so that the screw sleeve 5 moves along the sliding groove 31 and pushes the piston 3 to move, thereby driving the friction plate 2 to move toward the disc, and the two friction plates 2 are against the disc, thereby achieving the purpose of parking. When driving is needed, the screw 4 rotates in the opposite direction, the screw sleeve 5 moves in the opposite direction, and the reset member 8 resets the friction plate 2, and the disc can rotate.

Claims

1. An electronic parking caliper, comprising a caliper body (1), a friction plate (2), a piston (3) and a screw (4), wherein the caliper body (1) is provided with a receiving chamber (11), the friction plates (2) are respectively arranged on both sides of the receiving chamber (11), and a braking space (12) for accommodating a vehicle disc is provided between the friction plates (2), the piston (3) drives the friction plates (2) to move and brake the vehicle disc, and the characteristics are: It comprises a screw sleeve (5), a sliding groove (31) for the screw sleeve (5) to slide is provided on the other side of the piston (3) relative to the friction plate (2), a thread groove (51) matching with the thread of the screw rod (4) is provided on the other side of the screw sleeve (5) relative to the bottom of the sliding groove (31), and the rotating screw rod (4) causes the screw sleeve (5) to slide in the sliding groove (31); It also includes a support rod (6), with two sides of the support rod (6) respectively arranged on two sides of the accommodating cavity (11), and the accommodating cavity (11) is provided with reinforcing ribs (7) corresponding to the support rod (6); It also includes a reset member (8), which is arranged in the accommodating cavity (11) and is used to drive the friction plate (2) to reset to both sides of the accommodating cavity (11); The reset member (8) comprises a main body (81), a fixing portion (82) and a reset portion (83); the main body (81) is arranged along the arrangement direction of the support rod (6); the fixing portion (82) is provided with a fixing hole (84) and is used to fix the reset member (8) to the caliper body (1); and the reset portion (83) abuts against the friction plate (2) and constitutes the reset of the friction plate (2).

2. The electronic parking caliper according to claim 1, characterized in that: The piston (3) is further provided with an extension groove (32), a guide inclined surface (33) is provided between the extension groove (32) and the sliding groove (31), and the diameter of the extension groove (32) is smaller than the diameter of the sliding groove (31), and the screw sleeve (5) is provided with a matching inclined surface (52) matching the guide inclined surface (33) in a direction relatively close to the bottom of the sliding groove (31).

3. The electronic parking caliper according to claim 1, characterized in that: The screw sleeve (5) is provided with a connecting hole (53) arranged along the direction of the sliding groove (31), and the screw groove (51) is arranged in the connecting hole (53).

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