IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0410582
(2012-03-02)
|
등록번호 |
US-8776959
(2014-07-15)
|
우선권정보 |
JP-2011-044597 (2011-03-02) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
3 |
초록
▼
A vehicle disc brake includes pad retainers. The pad retainer includes retainer portions disposed on torque bearing faces, pad spring-back pieces projected from radially inner sides of the retainer portions and disposed on lug piece movably supporting faces, and a connecting piece connecting radiall
A vehicle disc brake includes pad retainers. The pad retainer includes retainer portions disposed on torque bearing faces, pad spring-back pieces projected from radially inner sides of the retainer portions and disposed on lug piece movably supporting faces, and a connecting piece connecting radially outer sides of the retainer portions. The pad spring-back piece includes a spring-back portion extended from a base end portion thereof and inclined gradually radially inwards from the base end portion towards a distal end portion, so that the distal end portion is allowed to be brought into abutment with the lug piece movably supporting face, in such a state that the lug piece is assembled to the pad guide portion via the pad retainer and a pad abutment portion extended radially outwards from the spring-back portion to be brought into abutment with a radially inner face of the lug piece.
대표청구항
▼
1. A vehicle disc brake comprising: a caliper bracket provided securely to a vehicle body;a disc rotor comprising an outer edge;a caliper body;friction pads disposed to hold the disc rotor between the friction pads, each friction pad comprising a back plate; andpad retainers,wherein the caliper brac
1. A vehicle disc brake comprising: a caliper bracket provided securely to a vehicle body;a disc rotor comprising an outer edge;a caliper body;friction pads disposed to hold the disc rotor between the friction pads, each friction pad comprising a back plate; andpad retainers,wherein the caliper bracket includes a pair of caliper support arms,wherein the pair of caliper support arms straddle the outer edge of the disc rotor in a direction of a disc axis and support the caliper body,wherein pad guide portions are provided in the caliper support arms,wherein lug pieces are provided at both ends of the back plate of each friction pad,wherein the pad guide portions are configured to support the lug pieces with the pad retainers being disposed between the lug pieces and the pad guide portions,wherein each of the pad guide portions comprises a torque bearing face, anda lug piece movably supporting face that projects from a disc-radial-direction inner side of the torque bearing face in a direction substantially perpendicular to the torque bearing face,wherein the torque bearing face of one of the pad guide portions faces a torque bearing face of another one of the pad guide portions,wherein each of the pad retainers comprises a pair of retainer portions which are disposed on the torque bearing faces,a pair of pad spring-back pieces which project from disc-radial-direction inner sides of the retainer portions and which are configured to be disposed on the lug piece movably supporting faces,a pair of outer pieces which project from disc-radial-direction outer sides of the retainer portions, and a connecting piece which connects the disc-radial-direction outer sides of the pair of retainer portions of each pad retainer, andwherein each of the pad spring-back pieces comprises: a spring-back portion which includes a base end portion and a distal end portion and extends from the base end portion in a direction along which the lug piece movably supporting face projects, the base end portion being located on a retainer portion side of the spring back portion; anda pad abutment portion which is configured to extend outwards in the disc radial direction from the spring-back portion so as to be brought into abutment with a disc-radial-direction inner face of the lug piece,wherein each spring-back portion is inclined gradually inwards in the disc radial direction from the base end portion towards the distal end portion so that the distal end portion is in abutment with the lug piece movably supporting face when the lug piece is assembled to the pad guide portion with the pad retainer being disposed between the lug piece and the pad guide portion, andwherein each spring-back portion is inclined gradually outwards in the disc radial direction from the base end portion towards the distal end portion when the pad retainer is assembled to the pad guide portion so that the retainer portion is disposed on the torque bearing face from the base end portion of the spring-back portion to the outer piece and when the lug piece is not assembled to the pad retainer. 2. The vehicle disc brake of claim 1, wherein each spring-back portion includes a planar surface extending from the base end portion. 3. The vehicle disc brake of claim 1, wherein each pad spring-back piece includes an extension piece, which extends inwards in the disc radial direction, at a distal end portion of the pad abutment portion. 4. The vehicle disc brake of claim 3, wherein the pad abutment portion and the extension piece of each pad spring-back piece are bent outwards in the disc radial direction into a crank shape from the distal end portion of the spring-back portion. 5. The vehicle disc brake of claim 1, wherein each pad guide portion comprises a disc-radial-direction outer face which projects from an disc-radial-direction outer side of the torque bearing face in a direction substantially perpendicular to the torque bearing face so as to face the lug piece movably supporting face,wherein each pad guide portion is formed into a U-shape in section, andwherein the outer pieces are disposed on the disc-radial-direction outer faces and face the pad spring-back pieces. 6. The vehicle disc brake of claim 5, wherein each caliper support arms comprises a pad retaining mounting portion including the disc-radial-direction outer face. 7. The vehicle disc brake of claim 6, wherein each pad retainer includes mounting pieces which are brought into abutment with mounting faces of the pad retainer mounting portions of the caliper support arm. 8. The vehicle disc brake of claim 7, wherein each pad retainer includes pad returning portions extending towards the disc rotor. 9. The vehicle disc brake of claim 8, wherein each pad retainer includes elastic loop portions which are provided on sides of the retainer portions. 10. The vehicle disc brake of claim 9, wherein each elastic loop portion is a bent back elongated piece which extends from disc-radial-direction outer side of the retainer portion. 11. The vehicle disc brake of claim 10, wherein each elastic loop portion is formed in an arc-like shape. 12. The vehicle disc brake of claim 9, further comprising insertion guide pieces which extend outwards from the retainer portions and which are brought into abutment with a face of the caliper support arm opposite to a side face of the disc rotor. 13. The vehicle disc brake of claim 12, further comprising retainer support pieces provided on disc rotor sides of the retainer portions, wherein the retainer support pieces extend from the retainer portions on an opposite side to the insertion guide pieces. 14. The vehicle disc brake of claim 13, wherein each pad spring-back piece includes an extension piece which extends radially inwards from the pad abutment portion. 15. The vehicle disc brake of claim 14, wherein the pad abutment portion and the extension piece of each pad spring-back piece are bent radially outwards into a crank shape from the distal end portion of the spring-back portion. 16. The vehicle disc brake of claim 7, wherein the mounting pieces are elastically deformable. 17. The vehicle disc brake of claim 16, wherein the pad retainers are mounted on the caliper support arms by holding the pad retainer mounting portions by the mounting pieces and the outer pieces. 18. The vehicle disc brake of claim 1, wherein a gap is formed between the distal end portion of each spring-back portion and the lug piece movably supporting face when the pad retainer is assembled to the pad guide portion and when the lug piece is not assembled to the pad retainer.
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