WO2019042317A1

WO2019042317A1 - Disc brake and vehicle

Info

Publication number: WO2019042317A1
Application number: PCT/CN2018/102949
Authority: WO
Inventors: 郑祖雄
Original assignee: 比亚迪股份有限公司
Priority date: 2017-08-29
Filing date: 2018-08-29
Publication date: 2019-03-07
Also published as: CN207145489U

Abstract

Disclosed is a disc brake, comprising a brake caliper (10), a brake disc (20), a first brake pad (31), an electric motor (40), a reducer (50) and a screw rod mechanism (60), wherein the electric motor (40) is an external rotor motor; a stator (41) of the electric motor (40) is provided with a cavity (411) extending in an axial direction; the screw rod mechanism (60) comprises a screw rod (61) and a nut (62) sheathed onto the screw rod (61); the screw rod (61) passes through the cavity (411); and a rotor (42) of the electric motor (40) drives, via the reducer (50), the screw rod (61) to rotate, so that the nut (62) moves axially along the screw rod (61), thus pushing the first brake pad (31) to move to press the brake disc (20). A vehicle is further disclosed.

Description

盘式制动器及车辆Disc brakes and vehicles

相关申请的交叉引用Cross-reference to related applications

本公开基于申请号为201721091658.3，申请日为2017年8月29日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本公开作为参考。The present disclosure is based on a Chinese patent application filed on Jan. 29, 2017, the entire disclosure of which is hereby incorporated by reference.

技术领域Technical field

本公开涉及制动器领域，具体地，涉及一种盘式制动器及车辆。The present disclosure relates to the field of brakes, and in particular to a disc brake and a vehicle.

背景技术Background technique

传统的液压或气动式制动***中，存在气液管路复杂、维修困难、布置结构复杂、制动动态响应慢、制动舒适性能较低等明显缺点。例如，在液压制动***中，在防抱死制动***动作时制动踏板会产生回弹振动现象，影响了制动舒适性能。再如，由于制动踏板机构直接与制动传动装置和制动执行装置相连，因此在车辆发生碰撞时产生的冲击力会直接通过制动***传递到驾驶室内，严重影响了汽车的安全性能。又如，传统的液压制动***中因采用了体积较大的真空制动助力器、制动主缸、储油器等常规液压制动***的部件，因此不仅具有结构及装配复杂且体积大、维护困难的问题，而且由于***中设置有连接相应部件的液压制动管路以及制动液，需要定期更换液压油和定期检查是否存在液压油泄漏的问题。In the traditional hydraulic or pneumatic brake system, there are obvious disadvantages such as complicated gas-liquid pipeline, difficult maintenance, complicated layout structure, slow braking dynamic response, and low brake comfort performance. For example, in a hydraulic brake system, the brake pedal generates a rebound vibration phenomenon when the anti-lock brake system is activated, which affects the braking comfort performance. For example, since the brake pedal mechanism is directly connected to the brake transmission device and the brake actuator, the impact force generated when the vehicle collides is directly transmitted to the cab through the brake system, which seriously affects the safety performance of the vehicle. For example, in the conventional hydraulic brake system, the components of the conventional hydraulic brake system such as the vacuum brake booster, the brake master cylinder, and the oil reservoir are used, so that the structure and the assembly are complicated and bulky. Maintenance problems are difficult, and since the system is provided with hydraulic brake lines and brake fluids that connect the corresponding components, it is necessary to periodically change the hydraulic oil and periodically check for the presence of hydraulic oil leakage.

发明内容Summary of the invention

本公开的目的是提供一种盘式制动器，该盘式制动器结构紧凑、占用空间小。It is an object of the present disclosure to provide a disc brake that is compact in structure and small in space.

为了实现上述目的，本公开提供一种盘式制动器，包括制动钳体、制动盘、第一制动块、电机、减速器、以及丝杆机构，所述电机为外转子电机，所述电机的定子具有沿轴向延伸的空腔，所述丝杆机构包括丝杆和套装在所述丝杆上的螺母，所述丝杆贯穿所述空腔，所述电机的转子通过所述减速器驱动所述丝杆旋转，以使所述螺母沿所述丝杆轴向移动，从而推动所述第一制动块移动以压紧所述制动盘。In order to achieve the above object, the present disclosure provides a disc brake including a brake caliper body, a brake disc, a first brake pad, a motor, a speed reducer, and a screw mechanism, the motor being an outer rotor motor, The stator of the electric machine has a cavity extending in the axial direction, the screw mechanism comprising a screw rod and a nut fitted on the screw rod, the lead rod penetrating through the cavity, the rotor of the motor passing the deceleration The drive drives the spindle to rotate to move the nut axially along the lead screw to urge the first brake block to move to compress the brake disc.

本公开还提供一种车辆，包括如上所述的盘式制动器。The present disclosure also provides a vehicle including the disc brake as described above.

在本公开的盘式制动器中，通过将丝杆机构集成在电机的内部，减小了制动器的轴向长度，使得制动器结构更紧凑、占用空间更小，便于在整车上的安装布置。In the disc brake of the present disclosure, by integrating the screw mechanism into the interior of the motor, the axial length of the brake is reduced, making the brake structure more compact and occupying less space, facilitating the mounting arrangement on the entire vehicle.

本公开的其他特征和优点将在随后的具体实施方式部分予以详细说明。Other features and advantages of the present disclosure will be described in detail in the detailed description which follows.

附图说明DRAWINGS

附图是用来提供对本公开的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本公开，但并不构成对本公开的限制。在附图中：The drawings are intended to provide a further understanding of the disclosure, and are in the In the drawing:

图1是根据本公开的一种实施方式的盘式制动器的剖视图；1 is a cross-sectional view of a disc brake in accordance with an embodiment of the present disclosure;

图2是图1的局部放大图；Figure 2 is a partial enlarged view of Figure 1;

图3是偏摆锥差行星减速器的结构示意图；Figure 3 is a schematic structural view of a yaw-cone difference planetary reducer;

图4是电磁离合器的结构示意图；Figure 4 is a schematic structural view of an electromagnetic clutch;

图5是根据本公开的一种实施方式的车辆的仰视图。FIG. 5 is a bottom view of a vehicle in accordance with an embodiment of the present disclosure.

具体实施方式Detailed ways

以下结合附图对本公开的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本公开，并不用于限制本公开。The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are not to be construed

在本公开中，在未作相反说明的情况下，使用的方位词如“左、右”通常是指相应附图的图面方向的左、右，这些方位词的使用仅是为了便于描述，不能视为对本公开的限制。In the present disclosure, the orientation words used, such as "left and right", generally refer to the left and right of the drawing directions of the corresponding drawings, and the use of these orientation words is for convenience of description only. It is not to be construed as limiting the disclosure.

根据本公开的一个方面，如图1和图2所示，提供一种盘式制动器，包括制动钳体10、制动盘20、第一制动块31、电机40、减速器50、以及丝杆机构60。第一制动块31可滑动地安装在制动钳体10内且位于制动盘20的一侧。电机40为外转子电机，电机40的定子41形成有沿轴向延伸的空腔411。丝杆机构60包括丝杆61和套装在丝杆61上的螺母62，丝杆61贯穿空腔411，电机40的转子42通过减速器50驱动丝杆61旋转，以使螺母62沿丝杆61轴向移动，从而推动第一制动块31移动并压靠到制动盘20上。According to an aspect of the present disclosure, as shown in FIGS. 1 and 2, a disc brake including a caliper body 10, a brake disc 20, a first brake block 31, a motor 40, a speed reducer 50, and Screw mechanism 60. The first brake block 31 is slidably mounted within the caliper body 10 and on one side of the brake disk 20. The motor 40 is an outer rotor motor, and the stator 41 of the motor 40 is formed with a cavity 411 extending in the axial direction. The screw mechanism 60 includes a lead screw 61 and a nut 62 fitted to the lead screw 61. The lead screw 61 extends through the cavity 411, and the rotor 42 of the motor 40 drives the lead screw 61 to rotate through the reducer 50 so that the nut 62 is along the lead screw 61. The axial movement moves to urge the first brake block 31 to move and press against the brake disc 20.

在本公开的盘式制动器中，通过将丝杆机构集成在电机的内部，减小了制动器的轴向长度，使得制动器结构更紧凑、占用空间更小，便于在整车上的安装布置。In the disc brake of the present disclosure, by integrating the screw mechanism into the interior of the motor, the axial length of the brake is reduced, so that the brake structure is more compact, the space is smaller, and the mounting arrangement on the entire vehicle is facilitated.

本公开的盘式制动器可以为定钳盘式制动器，也可以为浮钳盘式制动器。定钳盘式制动器的制动钳体固定安装在车身上，不能相对车身移动。浮钳盘式制动器的制动钳体可滑动地安装在车身上，可相对车身移动，且移动方向与制动盘的轴向相同。The disc brake of the present disclosure may be a fixed caliper disc brake or a float caliper disc brake. The caliper body of the fixed caliper disc brake is fixedly mounted on the vehicle body and cannot be moved relative to the vehicle body. The caliper body of the float caliper disc brake is slidably mounted on the vehicle body and is movable relative to the vehicle body in the same direction as the axial direction of the brake disc.

在本公开的盘式制动器为浮钳盘式制动器的情况下，所述制动器还包括第二制动块32，该第二制动块32安装在制动钳体10上且位于制动盘20的另一侧，制动钳体10可以相对于制动盘20轴向移动。具体地，如图1和图2所示，执行行车制动时，电机40的转子42通过减速器50驱动丝杆61旋转，以使螺母62沿丝杆61向左移动，从而推动第一制动块31也向左移动并压紧到制动盘20上，于是制动盘20给螺母62一个向右的反作用力，该反作用力会传递到制动钳体10上，使制动钳体10向右移动，直到第二制动块32也压靠到制动盘20上。这时两侧的制动块31、32都压在制动盘20上，从而夹紧制动盘20，产生阻止车轮转动的摩擦力矩，实现行车制动。In the case where the disc brake of the present disclosure is a float caliper disc brake, the brake further includes a second brake block 32 mounted on the caliper body 10 and located on the brake disc 20 On the other side, the caliper body 10 is axially movable relative to the brake disc 20. Specifically, as shown in FIGS. 1 and 2, when the service brake is performed, the rotor 42 of the motor 40 drives the screw 61 to rotate through the speed reducer 50 to move the nut 62 to the left along the screw 61, thereby pushing the first system. The moving block 31 also moves to the left and is pressed against the brake disc 20, so that the brake disc 20 gives the nut 62 a rightward reaction force, which is transmitted to the caliper body 10, so that the caliper body 10 moves to the right until the second brake block 32 is also pressed against the brake disc 20. At this time, the

brake pads

31, 32 on both sides are pressed against the brake disc 20, thereby clamping the brake disc 20, generating a friction torque that prevents the wheel from rotating, and realizing the service brake.

可选地，丝杆机构60可以为滚动丝杆机构。在采用滚动丝杆机构的情况下，螺母62和丝杆61之间设置有滚动体，例如滚珠或滚柱。进一步地，丝杆机构60可以为行星滚柱丝杆机构。相比于其他丝杆机构，行星滚柱丝杆机构具有承受载荷大、抗冲击能力强、传动精度高、使用寿命长的优点。Alternatively, the screw mechanism 60 can be a rolling screw mechanism. In the case of a rolling screw mechanism, a rolling body such as a ball or a roller is disposed between the nut 62 and the screw 61. Further, the screw mechanism 60 can be a planetary roller screw mechanism. Compared with other screw mechanisms, the planetary roller screw mechanism has the advantages of large load bearing capacity, strong impact resistance, high transmission precision and long service life.

另外，还可选地，丝杆机构60可以为滚珠丝杆机构。采用滚珠丝杆机构的有益效果与上述采用行星滚柱丝杆的效果类似，在此为了避免重复，省略对其的说明。但本公开并不限定于此，丝杆机构60还可以采用滑动丝杆机构等。当采用滑动丝杆机构时，可以使螺旋副的螺纹升角大于自锁角，以保证螺旋副不会发生自锁，从而在解除制动时能够通过制动盘对制动块的作用力实现螺母的回位。Additionally, optionally, the screw mechanism 60 can be a ball screw mechanism. The advantageous effects of using the ball screw mechanism are similar to those of the above-described planetary roller screw, and the description thereof will be omitted herein to avoid redundancy. However, the present disclosure is not limited thereto, and the screw mechanism 60 may also employ a slide screw mechanism or the like. When the sliding screw mechanism is adopted, the screw angle of the screw pair can be made larger than the self-locking angle, so as to ensure that the screw pair does not self-lock, so that the force of the brake disc can be realized by the brake disc when the brake is released. The return of the nut.

在一种实施方式中，所述盘式制动器还可以包括活塞90，该活塞90滑动配合在空腔411的一端，减速器50设置在空腔411的另一端并与丝杆61相连，螺母62通过活塞90推动第一制动块31移动。在这种实施方式中，活塞90将空腔411的内部与外界隔开，使得丝杆机构60处在一个相对密闭的环境中，避免受到外界水、杂质的侵蚀，延长了制动器的使用寿命。In an embodiment, the disc brake may further include a piston 90 that is slidably fitted to one end of the cavity 411, and the speed reducer 50 is disposed at the other end of the cavity 411 and connected to the lead screw 61, and the nut 62 The first brake block 31 is pushed by the piston 90 to move. In this embodiment, the piston 90 separates the interior of the cavity 411 from the outside, such that the screw mechanism 60 is in a relatively closed environment, protected from external water, impurities, and prolongs the service life of the brake.

为了避免对活塞90的运动形成阻力，活塞90可以与空腔411间隙配合，也就是说，空腔411的直径可以略大于活塞90的直径。在这种情况下，为了保证密封性，可以在活塞90与空腔411的内壁之间设置密封圈100。To avoid creating resistance to the movement of the piston 90, the piston 90 can be clearance-fitted with the cavity 411, that is, the diameter of the cavity 411 can be slightly larger than the diameter of the piston 90. In this case, in order to ensure the sealing property, the seal ring 100 may be provided between the piston 90 and the inner wall of the cavity 411.

这里，螺母62可以通过螺接、焊接、胶接等方式与活塞90固定在一起。然而，为了避免在连接处产生应力集中，在一种实施方式中，螺母62与活塞90不连接，执行行车制动时，螺母62推动活塞90移动，活塞90再推动第一制动块31压紧到制动盘20上。活塞90可以呈一端封闭另一端开放的筒状结构，螺母62可以设置在活塞90内且与活塞90的内壁间隙配合，执行行车制动时，螺母62的推力作用在活塞90的封闭端以推动活塞90朝向制动盘20移动。Here, the nut 62 may be fixed to the piston 90 by screwing, welding, gluing, or the like. However, in order to avoid stress concentration at the joint, in one embodiment, the nut 62 is not connected to the piston 90. When the service brake is performed, the nut 62 pushes the piston 90 to move, and the piston 90 pushes the first brake block 31 again. Close to the brake disc 20. The piston 90 may be in a cylindrical structure in which one end is closed and the other end is open. The nut 62 may be disposed in the piston 90 and is in clearance with the inner wall of the piston 90. When the service brake is performed, the thrust of the nut 62 acts on the closed end of the piston 90 to push The piston 90 moves toward the brake disc 20.

在其他实施方式中，螺母62也可以直接驱动第一制动块31移动，而无需设置活塞90。可选地，丝杆61上可以安装有推力轴承70。在一种实施方式中，丝杆61上形成有凸缘611，推力轴承70设置在凸缘611和减速器50的外壳之间。当制动块夹紧制动盘20时，减速器50的外壳通过推力轴承70向丝杆61施加轴向力以平衡制动盘20对丝杆61的反作用力，保证丝杆61受力平衡。In other embodiments, the nut 62 can also directly drive the first brake block 31 to move without the need to provide the piston 90. Alternatively, a thrust bearing 70 may be mounted on the lead screw 61. In one embodiment, the lead screw 61 is formed with a flange 611 disposed between the flange 611 and the outer casing of the speed reducer 50. When the brake block clamps the brake disc 20, the outer casing of the speed reducer 50 applies an axial force to the screw rod 61 through the thrust bearing 70 to balance the reaction force of the brake disc 20 against the lead screw 61, thereby ensuring the balance of the screw rod 61. .

在本公开中，减速器50可以采用任意适当类型的减速器，只要能够将电机40的输出转矩减速增矩后传递给丝杆61即可。在一种实施方式中，减速器50可以为偏摆锥差行星减速器。In the present disclosure, the speed reducer 50 may employ any appropriate type of speed reducer as long as the output torque of the motor 40 can be reduced and torqued and transmitted to the lead screw 61. In one embodiment, the speed reducer 50 can be a yaw cone differential planetary reducer.

图3为偏摆锥差行星减速器的结构示意图，主要由转动锥齿轮1、偏摆锥齿轮2、输入轴5上的偏摆发生器H和周向限制副等组成。其中偏摆发生器H由输入轴5的端部带有偏角Σ的轴头6和圆锥滚子轴承7构成。锥齿轮2相当于一个内锥齿轮，与装在输出轴9上的锥齿轮1组成内啮合，偏摆锥齿轮2的一端装在偏角轴头6处的圆锥滚子轴承7上，另一端用球面轴承8与输出轴9的轴端组成球铰连接。两锥齿轮的锥顶与球面轴承的中心O点重合，在偏摆锥齿轮2的外缘设有鼓形外齿圈3，与内齿圈4组成周向限制副。3 is a schematic structural view of a yaw-cone difference planetary reducer, which is mainly composed of a rotating bevel gear 1, a yoke bevel gear 2, a yaw generator H on the input shaft 5, and a circumferential limiting pair. The yaw generator H is composed of a shaft head 6 with an off-angle 端 at the end of the input shaft 5 and a tapered roller bearing 7. The bevel gear 2 is equivalent to an inner bevel gear, and is internally meshed with a bevel gear 1 mounted on the output shaft 9. One end of the yaw bevel gear 2 is mounted on the tapered roller bearing 7 at the yaw shaft head 6, and the other end The spherical bearing 8 is coupled to the shaft end of the output shaft 9 to form a ball joint. The tapered top of the bevel gear coincides with the center O point of the spherical bearing, and a drum-shaped outer ring gear 3 is provided on the outer edge of the yoke bevel gear 2, and the inner ring gear 4 constitutes a circumferential restricting pair.

偏摆锥差行星减速器的传动原理为：当输入轴5带动偏角轴头6绕输入轴的固定轴线nn转动时，偏角轴头的轴线OO _H便形成一个锥顶角为2Σ锥束空间。由于装在偏角轴头6上的偏摆锥齿轮2受到周向限制副的约束，不能做周转运动，偏角轴头的这种锥束运动便迫使偏摆锥齿轮2绕O点作循环偏摆运动，与装在输出轴9上的转动锥齿轮1形成循环开合的啮合状态。在图示位置，两锥齿轮上部呈全啮合状态，而在下部形成全脱开状态。但当偏角转过180°至位置A’时，两锥齿轮下部呈全啮合状态，而上部呈全脱开状态。当偏角轴头再转过180°又回到原位置时，恰好完成一个偏摆啮合循环。在偏角轴头绕固定轴线nn转动的过程中，偏摆锥齿轮的轮齿沿圆周方向循环进入又退出啮合，使啮合区沿输出锥齿轮的节锥面转移。 The transmission principle of the yaw cone planetary reducer is: when the input shaft 5 drives the yaw shaft 6 to rotate around the fixed axis nn of the input shaft, the axis OO _{H of the} yaw shaft head forms a cone angle of 2 Σ cone beam space. Since the yoke bevel gear 2 mounted on the yaw shaft head 6 is restrained by the circumferential limiting pair and cannot perform the revolving motion, the cone beam motion of the yaw moment head forces the yaw bevel gear 2 to circulate around the O point. The yaw motion forms a state of engagement with the rotating bevel gear 1 mounted on the output shaft 9. In the position shown, the upper portion of the two bevel gears is fully engaged and the fully disengaged state is formed at the lower portion. However, when the yaw angle is rotated through 180° to the position A', the lower part of the bevel gear is fully meshed, and the upper part is fully disengaged. When the yaw shaft head is rotated through 180° and returned to the original position, a yaw engagement cycle is completed. During the rotation of the yaw shaft head about the fixed axis nn, the teeth of the yaw bevel gear circulate in the circumferential direction and exit the engagement, so that the meshing zone is transferred along the pitch surface of the output bevel gear.

在采用偏摆锥差行星减速器的情况下，电机40的转子42与可以偏摆锥差行星减速器的内齿圈4相连，偏摆锥差行星减速器的输出轴9可以与丝杆61相连，电磁离合器8安装在偏摆锥差行星减速器的输入轴5上。也就是说，内齿圈4作为偏摆锥差行星减速器的输入端，输出轴9作为偏摆锥差行星减速器的输出端。In the case of a yaw-cone difference planetary reducer, the rotor 42 of the motor 40 is connected to the ring gear 4 of the planetary reducer which can be biased, and the output shaft 9 of the yaw-cone planetary reducer can be connected to the lead screw 61. Connected, the electromagnetic clutch 8 is mounted on the input shaft 5 of the yaw cone planetary reducer. That is to say, the ring gear 4 serves as the input end of the yaw-cone difference planetary reducer, and the output shaft 9 serves as the output end of the yaw-cone difference planetary reducer.

在本公开中，为了使制动器同时具有驻车制动功能，在一种实施方式中，如图1和图4所示，所述制动器还可以包括电磁离合器80，该电磁离合器80安装在减速器50的一个转轴上，通过电磁离合器80抱死所述转轴来实现对减速器50的锁止，从而实现驻车制动。例如，当减速器50采用如上所述的偏摆锥差行星减速器时，电磁离合器8可以安装在偏摆锥差行星减速器的输入轴5，并能够锁止该输入轴5。In the present disclosure, in order to have the brake have a parking brake function at the same time, in one embodiment, as shown in FIGS. 1 and 4, the brake may further include an electromagnetic clutch 80 that is mounted on the reducer. On one of the rotating shafts 50, the rotating shaft is locked by the electromagnetic clutch 80 to lock the speed reducer 50, thereby realizing the parking brake. For example, when the speed reducer 50 employs the yaw cone difference planetary speed reducer as described above, the electromagnetic clutch 8 can be mounted on the input shaft 5 of the yaw cone difference planetary speed reducer and can lock the input shaft 5.

具体地，当电磁离合器80失电时，电磁离合器80接合以抱死减速器50的一个转轴，使得减速器50被锁止，从而使丝杆61不能转动，使螺母62不能移动，进而保持对第一制动块31的推力，实现驻车制动。当电磁离合器得电时，电磁离合器分离以释放减速器50，驻车制动解除。Specifically, when the electromagnetic clutch 80 is de-energized, the electromagnetic clutch 80 is engaged to lock a rotating shaft of the speed reducer 50, so that the speed reducer 50 is locked, so that the screw rod 61 cannot be rotated, so that the nut 62 cannot be moved, thereby maintaining the pair. The thrust of the first brake block 31 realizes parking brake. When the electromagnetic clutch is energized, the electromagnetic clutch is disengaged to release the retarder 50 and the parking brake is released.

可选地，电磁离合器80可以包括离合器壳体81、电磁铁、平移摩擦片85、旋转摩擦片86、外座圈87和内座圈88。其中，离合器壳体81相对于制动钳体10固定，电磁铁可以包括定铁芯82、动铁芯83和作用于动铁芯83的驱动弹簧84。内座圈88与减速器50的一个转轴通过花键滑动连接，旋转摩擦片86设置在内座圈88上以能够在所述转轴的带动下旋转。外座圈87与离合器壳体81的内壁通过花键滑动连接，平移摩擦片85设置在外座圈87上以能够沿所述转轴的轴向平移。定铁芯82和动铁芯83可以形成为环状结构，并且动铁芯83套设在所述转轴的外部，定铁芯82套设在动铁芯83的外部，以使制动器的结构更紧凑，轴向尺寸更小。当电磁铁失电时，定铁芯82与动铁芯83之间的磁吸力消失，动铁芯83在驱动弹簧84的作用下向右移动，并推动平移摩擦片85和旋转摩擦片86接合，二者之间的摩擦力使得减速器50的所述转轴被抱死；当电磁铁得电时，定铁芯82与动铁芯83之间产生磁吸力，使得动铁芯83复位的同时压缩驱动弹簧84，平移摩擦片85和旋转摩擦片86分离，二者之间的摩擦力消失从而丢掉抱死力。Alternatively, the electromagnetic clutch 80 may include a clutch housing 81, an electromagnet, a translational friction plate 85, a rotating friction plate 86, an outer race 87, and an inner race 88. The clutch housing 81 is fixed relative to the caliper body 10, and the electromagnet may include a fixed iron core 82, a movable iron core 83, and a drive spring 84 acting on the movable iron core 83. The inner race 88 is slidably coupled to one of the rotating shafts of the speed reducer 50, and the rotary lining 86 is disposed on the inner race 88 to be rotatable by the rotary shaft. The outer race 87 is spline-slidably coupled to the inner wall of the clutch housing 81, and the translational friction plate 85 is disposed on the outer race 87 to be able to translate in the axial direction of the rotary shaft. The fixed iron core 82 and the movable iron core 83 may be formed in an annular structure, and the moving iron core 83 is sleeved on the outside of the rotating shaft, and the fixed iron core 82 is sleeved on the outside of the moving iron core 83 to make the structure of the brake more Compact and smaller in axial dimensions. When the electromagnet loses power, the magnetic attraction between the fixed iron core 82 and the movable iron core 83 disappears, the movable iron core 83 moves to the right under the action of the drive spring 84, and pushes the translational friction plate 85 and the rotary friction plate 86 to engage. The friction between the two causes the rotating shaft of the speed reducer 50 to be locked; when the electromagnet is energized, a magnetic attraction force is generated between the fixed iron core 82 and the movable iron core 83, so that the movable iron core 83 is reset at the same time. The compression drive spring 84, the translational friction plate 85 and the rotary friction plate 86 are separated, and the friction between them disappears to lose the locking force.

总体而言，需要执行驻车制动功能时，电机40得电，并依次通过减速器50驱动丝杆61旋转，从而使螺母62推动制动块夹紧制动盘20，达到驻车要求时(例如，驻车制动力达到目标制动力，且驻车制动力从零增大至目标制动力所用的时间小于预设时间)，电机40失电，电磁离合器80工作以抱死减速器50的所述转轴，锁止减速器50，保持驻车制动力，执行驻车制动功能。解除驻车制动时，电磁离合器80丢掉抱死力，释放所述转轴，解除对减速器50的锁止。In general, when the parking brake function needs to be performed, the motor 40 is energized, and the screw 61 is driven to rotate by the reducer 50 in sequence, so that the nut 62 pushes the brake block to clamp the brake disk 20 to meet the parking requirement. (For example, if the parking brake force reaches the target braking force and the parking brake force increases from zero to the target braking force for less than the preset time), the motor 40 loses power, and the electromagnetic clutch 80 operates to lock the speed reducer 50. The rotating shaft locks the speed reducer 50, maintains the parking brake force, and performs a parking brake function. When the parking brake is released, the electromagnetic clutch 80 loses the locking force, releases the rotating shaft, and unlocks the speed reducer 50.

可选地，减速器50可以设置在电机40和电磁离合器80之间，以使得制动器结构紧凑、外形规则。Alternatively, the speed reducer 50 may be disposed between the motor 40 and the electromagnetic clutch 80 to make the brake compact and structurally uniform.

在一种实施方式中，电机40、减速器50和电磁离合器80可以容纳在同一壳体110内，该壳体110可以与制动钳体10例如通过紧固件固定在一起,可作为制动钳体10的一部分。离合器壳体81可以固定在壳体110内。In one embodiment, the motor 40, the retarder 50, and the electromagnetic clutch 80 can be housed within the same housing 110, which can be secured to the caliper body 10, such as by fasteners, as a brake A part of the caliper body 10. The clutch housing 81 can be fixed within the housing 110.

根据本公开的另一方面，提供一种车辆200，该车辆200包括如上所述的盘式制动器。In accordance with another aspect of the present disclosure, a vehicle 200 is provided that includes a disc brake as described above.

以上结合附图详细描述了本公开的优选实施方式，但是，本公开并不限于上述实施方式中的具体细节，在本公开的技术构思范围内，可以对本公开的技术方案进行多种简单变型，这些简单变型均属于本公开的保护范围。The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solutions of the present disclosure within the scope of the technical idea of the present disclosure. These simple variations are all within the scope of the disclosure.

另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合。为了避免不必要的重复，本公开对各种可能的组合方式不再另行说明。It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not be further described in various possible combinations.

此外，本公开的各种不同的实施方式之间也可以进行任意组合，只要其不违背本公开的思想，其同样应当视为本公开所公开的内容。In addition, any combination of various embodiments of the present disclosure may be made as long as it does not deviate from the idea of the present disclosure, and should also be regarded as the disclosure of the present disclosure.

Claims

一种盘式制动器，其特征在于，包括：A disc brake characterized by comprising:

制动钳体(10)；Brake caliper body (10);

制动盘(20)；Brake disc (20);

第一制动块(31)；First brake block (31);

电机(40)，所述电机(40)为外转子电机，所述电机(40)的定子(41)具有沿轴向延伸的空腔(411)；a motor (40), the motor (40) being an outer rotor motor, the stator (41) of the motor (40) having a cavity (411) extending in the axial direction;

丝杆机构(60)，所述丝杆机构(60)包括丝杆(61)和套装在所述丝杆(61)上的螺母(62)，所述丝杆(61)贯穿所述空腔(411)；a screw mechanism (60), the screw mechanism (60) comprising a screw (61) and a nut (62) fitted on the screw (61), the screw (61) penetrating the cavity (411);

减速器(50)，所述电机(40)的转子(42)通过所述减速器(50)驱动所述丝杆(61)旋转，以使所述螺母(62)沿所述丝杆(61)轴向移动，从而推动所述第一制动块(31)移动以压紧制动盘(20)。a reducer (50), the rotor (42) of the motor (40) drives the screw (61) to rotate by the reducer (50) to cause the nut (62) to follow the screw (61) Moving axially, thereby pushing the first brake block (31) to move against the brake disc (20).
根据权利要求1所述的盘式制动器，其特征在于，所述盘式制动器为浮钳盘式制动器，所述盘式制动器还包括：The disc brake of claim 1 wherein said disc brake is a float caliper disc brake, said disc brake further comprising:

第二制动块(32)，所述第一制动块(31)和第二制动块(32)分别位于所述制动盘(20)两侧，所述第二制动块(32)安装在所述制动钳体(10)上。a second brake block (32), the first brake block (31) and the second brake block (32) are respectively located on two sides of the brake disc (20), and the second brake block (32) ) mounted on the caliper body (10).
根据权利要求1或2所述的盘式制动器，其特征在于，所述丝杆机构(60)为滚动丝杆机构。A disc brake according to claim 1 or 2, wherein the screw mechanism (60) is a rolling screw mechanism.
根据权利要求3所述的盘式制动器，其特征在于，所述丝杆机构(60)为行星滚柱丝杆机构。A disc brake according to claim 3, wherein said screw mechanism (60) is a planetary roller screw mechanism.
根据权利要求1-4中任一项所述的盘式制动器，其特征在于，所述盘式制动器还包括：A disc brake according to any one of claims 1 to 4, wherein the disc brake further comprises:

电磁离合器(80)，当所述电磁离合器(80)断电时，所述电磁离合器(80)接合，以将所述减速器(50)的一个转轴锁止；当所述电磁离合器(80)通电时，所述电磁离合器(80)分离，以将所述转轴释放。An electromagnetic clutch (80) that engages when the electromagnetic clutch (80) is de-energized to lock a shaft of the reducer (50); when the electromagnetic clutch (80) Upon energization, the electromagnetic clutch (80) is disengaged to release the shaft.
根据权利要求5所述的盘式制动器，其特征在于，所述电磁离合器(80)包括：The disc brake of claim 5 wherein said electromagnetic clutch (80) comprises:

电磁铁，所述电磁铁包括定铁芯(82)、动铁芯(83)和作用于所述动铁芯(83)的驱动弹簧(84)；An electromagnet comprising a fixed iron core (82), a moving iron core (83) and a driving spring (84) acting on the moving iron core (83);

平移摩擦片(85)，所述平移摩擦片(85)能够由所述动铁芯(83)驱动；Translating a friction plate (85), the translational friction plate (85) being drivable by the moving iron core (83);

旋转摩擦片(86)，所述旋转摩擦片(86)与所述转轴连接。A rotating friction plate (86) is coupled to the rotating shaft.
根据权利要求6所述的盘式制动器，其特征在于，所述电磁离合器(80)还包括：The disc brake of claim 6 wherein said electromagnetic clutch (80) further comprises:

离合器壳体(81)，所述离合器壳体(81)相对于所述制动钳体(10)固定；a clutch housing (81), the clutch housing (81) being fixed relative to the brake caliper body (10);

外座圈(87)，所述外座圈(87)与所述离合器壳体(81)的内壁花键连接，所述平移摩擦片(85)设置在所述外座圈(87)上；An outer race (87), the outer race (87) is splined to an inner wall of the clutch housing (81), and the translational friction plate (85) is disposed on the outer race (87);

内座圈(88)，所述内座圈(88)与所述转轴花键连接，所述旋转摩擦片(86)设置在所述内座圈(88)上。An inner race (88), the inner race (88) is splined to the shaft, and the rotating friction plate (86) is disposed on the inner race (88).
根据权利要求5所述的盘式制动器，其特征在于，所述减速器(50)设置在所述电机(40)和电磁离合器(80)之间。The disc brake according to claim 5, characterized in that the speed reducer (50) is disposed between the motor (40) and the electromagnetic clutch (80).
根据权利要求5所述的盘式制动器，其特征在于，所述电机(40)、减速器(50)和电磁离合器(80)容纳在同一壳体(110)内，所述壳体(110)固定于所述制动钳体(10)。The disc brake according to claim 5, wherein said motor (40), speed reducer (50) and electromagnetic clutch (80) are housed in the same casing (110), said casing (110) Fixed to the brake caliper body (10).
根据权利要求5所述的盘式制动器，其特征在于，所述减速器(50)为偏摆锥差行星减速器，所述电机(40)的转子(42)与所述偏摆锥差行星减速器的内齿圈(4)相连，所述偏摆锥差行星减速器的输出轴(9)与所述丝杆(61)相连，所述转轴为所述偏摆锥差行星减速器的输入轴(5)。The disc brake according to claim 5, characterized in that the speed reducer (50) is a yaw cone difference planetary reducer, the rotor (42) of the motor (40) and the yaw cone difference planet The inner ring gear (4) of the reducer is connected, and the output shaft (9) of the yaw cone difference planetary reducer is connected to the lead screw (61), and the rotating shaft is the yaw cone difference planetary reducer Input shaft (5).
根据权利要求1-11中任一项所述的盘式制动器，其特征在于，所述盘式制动器还包括：A disc brake according to any one of claims 1 to 11, wherein the disc brake further comprises:

活塞(90)，所述活塞(90)滑动配合在所述空腔(411)的一端，所述减速器(50)设置在所述空腔(411)的另一端，所述螺母(62)通过所述活塞(90)推动所述第一制动块(31)移动。a piston (90), the piston (90) is slidably fitted to one end of the cavity (411), and the speed reducer (50) is disposed at the other end of the cavity (411), the nut (62) The first brake block (31) is moved by the piston (90).
根据权利要求11所述的盘式制动器，其特征在于，所述活塞(90)与空腔(411)的内壁之间设置有密封圈(100)。A disc brake according to claim 11, characterized in that a seal ring (100) is provided between the piston (90) and the inner wall of the cavity (411).
一种车辆(200)，其特征在于，包括根据权利要求1-12中任一项所述的盘式制动器。A vehicle (200), characterized in that it comprises a disc brake according to any one of claims 1-12.