JPS6197638U

JPS6197638U -

Info

Publication number: JPS6197638U
Application number: JP18337084U
Authority: JP
Priority date: 1984-12-03
Filing date: 1984-12-03
Publication date: 1986-06-23

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例による隙間調整装
置付ドラムブレーキの正面図、第２図は第１図に
おける−線方向拡大断面図、第３図は第１図
における−線方向拡大断面図、第４図は第１
図における−線方向拡大断面図、第５図は第
３図における−線方向拡大断面図、第６図は
本考案の第２実施例による隙間調整装置付ドラム
ブレーキの要部の部分破断正面図、第７図は第６
図における−線方向拡大断面図、第８図は第
６図における調整レバーの変形例をこれと関連す
る部分と共に示す部分正面図、第９図は第８図に
おける−線方向断面図、第１０図は本考案の
第３実施例による隙間調整装置付ドラムブレーキ
の部分破断正面図、第１１図は第１０図における
−線方向拡大断面図、第１２図は第１０
図におけるストラツトの変形例を示す断面図、第
１３図は本考案の第４実施例による隙間調整装置
付ドラムブレーキの部分破断正面図、第１４図は
第１３図における−線方向拡大断面図、
及び第１５図は第１３図における−線方
向拡大断面図である。なお図において、１，４１，５１，６１…隙間
調整装置付ドラムブレーキ、２，３…シユー、１
０…パーキングレバー、１５，４２，５３，６３
…調整レバー、２３，４３，５４，６６…ピン、
３０，５２，５５，６２…ストラツト。 Fig. 1 is a front view of a drum brake with a clearance adjustment device according to the first embodiment of the present invention, Fig. 2 is an enlarged sectional view in the - line direction in Fig. 1, and Fig. 3 is an enlarged sectional view in the - line direction in Fig. 1. Figure 4 is the first
FIG. 5 is an enlarged cross-sectional view in the - line direction in FIG. , Figure 7 is the 6th
FIG. 8 is a partial front view showing a modified example of the adjustment lever in FIG. 6 together with related parts; FIG. 9 is an enlarged sectional view in the - line direction in FIG. The figure is a partially cutaway front view of a drum brake with a clearance adjustment device according to a third embodiment of the present invention, FIG. 11 is an enlarged sectional view in the - line direction of FIG. 10, and FIG.
13 is a partially cutaway front view of a drum brake with a gap adjustment device according to a fourth embodiment of the present invention; FIG. 14 is an enlarged sectional view in the - line direction in FIG. 13;
and FIG. 15 is an enlarged sectional view in the - line direction in FIG. 13. In the figure, 1, 41, 51, 61... drum brake with clearance adjustment device, 2, 3... shoe, 1
0...Parking lever, 15, 42, 53, 63
...adjustment lever, 23, 43, 54, 66...pin,
30, 52, 55, 62...strut.

Claims

[Scope of utility model registration request]

A pair of brake shoes movably disposed on the back plate, and a pair of brake shoes provided on one end side of the pair of brake shoes, capable of pressing the pair of brake shoes against the brake drum in response to external input. an actuator, an anchor provided on the other end side of the pair of brake shoes, a return spring that biases the pair of brake shoes in a direction away from the brake drum, and a return spring that straddles the pair of brake shoes. a parking lever that is swingably supported by either one of the pair of brake shoes and that can come into contact with one end of the strut; The strut includes an adjustment lever that is swingable based on the swinging of the parking lever and has a claw formed at the end thereof, and the strut has at least two members that are screwed together with variable effective lengths, and Ratchet teeth are formed on the outer periphery of one side of the member, and the ratchet teeth and the pawl of the adjustment lever can be engaged with each other when the adjustment lever swings in one direction, and when the adjustment lever swings in the other direction. In some cases, in a drum brake with a gap adjustment device in which the pawl is configured to be able to ride over the ratchet teeth, the adjustment lever is moved closer to the strut than the swinging support portion of the parking lever, and the one of the pair of brake shoes is moved. A drum brake with a clearance adjustment device that is swingably supported.