Variable lead screw for power door actuator
US-2019106925-A1 · Apr 11, 2019 · US
Electric caliper brake
US10899332B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10899332-B2 |
| Application number | US-201916278044-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 15, 2019 |
| Priority date | Feb 20, 2018 |
| Publication date | Jan 26, 2021 |
| Grant date | Jan 26, 2021 |
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- Title
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- Abstract
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- Assignees and inventors
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- Key dates
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
An electric caliper brake is provided. The electric caliper brake includes a carrier in which a pair of pad plates are installed to be movable forward and backward, and a caliper housing in which a cylinder having a piston installed to be movable forward to and backward from the carrier due to a hydraulic pressure is provided. The electric caliper brake includes a power transmission module, which includes a spindle member installed to pass through a rear portion of the cylinder and configured to receive rotational power from an actuator to rotate, and a nut member screw-coupled to the spindle member, disposed in the piston, and configured to move forward or backward according to rotation of the spindle member to operate the piston, wherein the spindle member includes a first screw thread portion corresponding to a screw thread formed on the nut member and a second screw thread portion, which is disposed to have the same axis as that of the first screw thread portion and has a pitch which is different from that of the first screw thread portion, and when the nut member rotates about the second screw thread portion, a frictional force between the screw thread of the nut member and the second screw thread increases.
First claim
Opening claim text (preview).
What is claimed is: 1. An electric caliper brake including a carrier in which a pair of pad plates are installed to be movable forward and backward and a caliper housing in which a cylinder having a piston installed to be movable forward to and backward from the carrier due to a hydraulic pressure is provided, the electric caliper brake comprising a power transmission module, which includes a spindle member installed to pass through a rear portion of the cylinder and configured to receive rotational power from an actuator to rotate, and a nut member screw-coupled to the spindle member, disposed in the piston, and configured to move forward or backward according to rotation of the spindle member to operate the piston, wherein the spindle member includes a first screw thread portion corresponding to a screw thread formed on the nut member and a second screw thread portion, which is disposed to have the same axis as that of the first screw thread portion and has a pitch which is different from that of the first screw thread portion, and when the nut member rotates about the second screw thread portion, a frictional force between the screw thread of the nut member and the second screw thread increases, and wherein the electric caliper brake further comprises a controller configured to control a current supplied to the actuator to stop rotation of the spindle member when the frictional force between the screw thread of the nut member and the second screw thread increases to have a predetermined frictional force. 2. The electric caliper brake of claim 1 , wherein the first screw thread portion is disposed at a side of an end portion of the spindle member to be closer to the carrier than the second screw thread portion. 3. The electric caliper brake of claim 1 , wherein the pitch of the second screw thread portion is 0.8 to 1.8 (excepting 1) times that of the first screw thread portion. 4. The electric caliper brake of claim 1 , wherein the spindle member includes: a first bolt member formed in a hollow form and including the first screw thread portion; and a second bolt member in which a central shaft coupled to a hollow portion of the first bolt member is formed to protrude and which includes the second screw thread portion disposed adjacent to the first screw thread portion.
Assignees
Inventors
Classifications
Screw-and-nut · CPC title
Mechanical · CPC title
- F16D55/226Primary
in which the common actuating member is moved axially {, e.g. floating caliper disc brakes} · CPC title
adapted for drawing members together {, e.g. for disc brakes} · CPC title
with force-transmitting members arranged side by side acting on a spot type force-applying member · CPC title
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Frequently asked questions
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- What does patent US10899332B2 cover?
- An electric caliper brake is provided. The electric caliper brake includes a carrier in which a pair of pad plates are installed to be movable forward and backward, and a caliper housing in which a cylinder having a piston installed to be movable forward to and backward from the carrier due to a hydraulic pressure is provided. The electric caliper brake includes a power transmission module, whi…
- Who is the assignee on this patent?
- Mando Corp
- What technology area does this patent fall under?
- Primary CPC classification F16D55/226. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 26 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).