JPH03125923U - - Google Patents
Info
- Publication number
- JPH03125923U JPH03125923U JP3601890U JP3601890U JPH03125923U JP H03125923 U JPH03125923 U JP H03125923U JP 3601890 U JP3601890 U JP 3601890U JP 3601890 U JP3601890 U JP 3601890U JP H03125923 U JPH03125923 U JP H03125923U
- Authority
- JP
- Japan
- Prior art keywords
- shoe
- brake
- plate
- bucking
- lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002265 prevention Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Description
第１図は本考案のデユオサーボ型ドラムブレー
キの一例を示す図であつて、要部を示す正面図で
ある。第２図は第１図における−視断面の要
部拡大図である。第３図は第１図における−
視断面の要部拡大図である。
１０……バツキングプレート、１２，１４……
ブレーキシユー、１６，１８……シユーホルドダ
ウン装置、２０……切欠、２２……シユーウエブ
、２８……シユーホルドダウンピン、３６……ア
ジヤスタ（連結機構）、４６……パーキングブレ
ーキレバー、５６……板状部材、５８……固定部
、６０……突出部（レバー回動阻止部）、６２…
…対向部（シユー浮上がり防止部）。
FIG. 1 is a diagram showing an example of a dual-servo type drum brake according to the present invention, and is a front view showing the main parts. FIG. 2 is an enlarged view of a main part of a cross section taken from - in FIG. 1. Figure 3 is - in Figure 1.
FIG. 2 is an enlarged view of a main part of a cross-sectional view. 10...Backing plate, 12, 14...
Brake shoe, 16, 18... Shoe hold down device, 20... Notch, 22... Show web, 28... Show hold down pin, 36... Adjuster (connection mechanism), 46... Parking brake lever, 56...Plate member, 58...Fixing part, 60...Protrusion part (lever rotation prevention part), 62...
... Opposite part (shew lifting prevention part).
Claims (1)
周縁にて開口する切欠が形成されたシユーウエブ
を有し、該シユーウエブがバツキングプレートと
略平行な状態で該バツキングプレート上に配設さ
れた一対のブレーキシユーと、一端部において該
バツキングプレートに揺動可能に取り付けられ且
つ中間部が前記シユーウエブの切欠内を挿し通さ
れたシユーホルドダウンピンを有し、前記一対の
ブレーキシユーを前記バツキングプレート上にお
いて互いに拡開可能に支持するシユーホルドダウ
ン装置と、該一対のブレーキシユーの一方のシユ
ーウエブの該バツキングプレート側の面に回動可
能に設けられ、前記シユーホルドダウンピンより
も該一方のブレーキシユーの外周側に位置するパ
ーキングブレーキレバーと、該一対のブレーキシ
ユーの相対向する一端部を互いに連結する連結機
構とを備え、前記パーキングブレーキレバーを前
記一方のブレーキシユーの内周側へ回動させるこ
とにより前記一対のブレーキシユーを互いに拡開
させる形式のデユオサーボ型ドラムブレーキであ
つて、 前記バツキングプレート上であつて且つ前記一
方のブレーキシユーの一端部側に位置する部分に
固定された固定部と、該固定部の一端において該
バツキングプレートから離隔する方向へ突き出し
、前記パーキングブレーキレバーとの当接に基づ
いて、該パーキングブレーキレバーの前記内周側
への一定限度以上の回動を阻止するレバー回動阻
止部と、該レバー回動阻止部の先端から前記固定
部と略平行に延び、前記一方のブレーキシユーの
シユーウエブの前記バツキングプレート側と反対
側の面との当接に基づいて、該一方のブレーキシ
ユーの前記一端部側が該バツキングプレートから
離隔する方向へ浮き上がるのを防止するシユー浮
上がり防止部とを備え、一枚の金属製板材から曲
成された板状部材を含むことを特徴とするデユオ
サーボ型ドラムブレーキ。[Claims for Utility Model Registration] A shew web having an arcuate and flat plate shape and having a cutout opening at the inner peripheral edge in the longitudinally intermediate portion thereof, the shew web being substantially parallel to the bucking plate. a pair of brake shoes disposed on the bucking plate; and a shoe hold down pin that is swingably attached to the bucking plate at one end and whose middle portion is inserted through a notch in the shoe web. a shoe hold-down device that supports the pair of brake shoes on the bucking plate so as to be able to expand with respect to each other; A coupling mechanism that connects a parking brake lever that is rotatably provided and is located closer to the outer periphery of the one brake shoe than the shoe hold down pin and one opposing end of the pair of brake shoes to each other. A dual servo type drum brake of a type in which the pair of brake shoes are mutually expanded by rotating the parking brake lever toward the inner circumferential side of the one brake shoe, the bucking plate a fixed part fixed to a portion located above and on one end side of the one brake shoe; and a fixed part protruding in a direction away from the bucking plate at one end of the fixed part, and connected to the parking brake lever. a lever rotation preventing portion that prevents the parking brake lever from rotating beyond a certain limit toward the inner circumferential side upon contact; and a lever rotation preventing portion extending substantially parallel to the fixed portion from the tip of the lever rotation preventing portion. , the one end side of the one brake shoe is lifted in a direction away from the bucking plate based on the contact between the shoe web of the one brake shoe and the surface opposite to the bucking plate side. A dual servo type drum brake characterized by comprising a plate-like member bent from a single metal plate, and a shoe lifting prevention part for preventing the lifting of shoes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3601890U JPH03125923U (en) | 1990-04-03 | 1990-04-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3601890U JPH03125923U (en) | 1990-04-03 | 1990-04-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03125923U true JPH03125923U (en) | 1991-12-19 |
Family
ID=31541883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3601890U Pending JPH03125923U (en) | 1990-04-03 | 1990-04-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03125923U (en) |
-
1990
- 1990-04-03 JP JP3601890U patent/JPH03125923U/ja active Pending
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