Electromechanical brakes
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- ROBERT BOSCH GMBH
- Filing Date
- 2024-04-29
- Publication Date
- 2026-06-10
AI Technical Summary
【0022】 好ましくは、電気モータの軸と、ウォームとは、まとめて1ピースに形成されている。これにより、両方の軸を連結したり、支持したりすることは、省略される。ウォームをモータ軸上に取り付ける場合と比較して、ウォームの直径は、小さく保たれ得る。このことは、ウォーム-ねじ歯車伝動機構の効率を向上させ、このことは、備えていなければならないモータ性能にとって有利であり、ひいては、モータのコストおよび取り付けスペース、ならびに制動に必要な出力を減じる。
Smart Images
Figure 2026518882000001_ABST
Abstract
Claims
1. An electromechanical brake (10) for braking an automobile, The device includes an electric motor (14) having a shaft (22), and a transmission mechanism unit (26) is drivable via the electric motor (14) to actuate a brake actuator (30). In an electromechanical brake (10), The transmission mechanism unit (26) has a worm-screw gear transmission mechanism (38) having a worm (42) and a plastic screw gear (46), The worm (42) is positioned on the shaft (22) of the electric motor (14), and The worm axis (50) and the axis (54) of the plastic screw gear (46) have different orientations from each other. An electromechanical brake (10) characterized by the following features.
2. The electromechanical brake (10) according to claim 1, characterized in that the brake actuator (30) is formed as a disc brake.
3. The electromechanical brake (10) according to claim 1 or 2, characterized in that the worm-screw gear transmission mechanism (38) has a speed transmission ratio of 6 to 50.
4. The electromechanical brake (10) according to any one of claims 1 to 3, characterized in that the axis (54) of the plastic screw gear (46) and the worm axis (50) form an angle of 60° to 120° with respect to each other.
5. The electromechanical brake (10) according to any one of claims 1 to 4, characterized in that the plastic screw gear (46) is formed in a semi-drum shape.
6. The electromechanical brake (10) according to any one of claims 1 to 5, characterized in that the advance angle of the worm (42) is greater than 6°.
7. The electromechanical brake (10) according to any one of claims 1 to 6, characterized in that the plastic screw gear (46) is straight.
8. The electromechanical brake (10) according to any one of claims 1 to 7, characterized in that the plastic screw gear (46) is directly coupled to a spindle transmission mechanism (58), and the brake piston (70) is movable in the axial direction via the spindle transmission mechanism (58).
9. The electric motor (14) is characterized by having a diameter of 65 mm or less and a length of less than 30 mm, as described in any one of claims 1 to 8, the electromechanical brake (10).
10. The electromechanical brake (10) according to any one of claims 1 to 9, characterized in that the shaft (22) of the electric motor (14) and the worm (42) are formed together as a single piece.
11. The electromechanical brake (10) according to any one of claims 1 to 9, characterized in that the shaft (22) of the electric motor (14) and the worm (42) are formed as separate components that can be coupled to each other.
12. An automobile equipped with an electromechanical brake (10) according to any one of claims 1 to 11.