CN206802141U - A kind of drum brake shoe press spring base - Google Patents

Abstract

A kind of drum brake shoe press spring base, it matches to merge with drift bolt is fixed on the bottom plate of brake, and press spring base provides the elastic press power along brake backing plate axial direction, wherein：The press spring base includes：The U-shaped body being made up of spring steel, include in the two side of the U-shaped body：Lower surface and upper surface, the lower surface has the via being engaged with the axle of the drift bolt, the upper surface has the slotted eye with the matching ends of the drift bolt, it provides a U-shaped elastomer, the part for carrying spring function is formed, and is relatively fixed drift bolt by the elastic force between two side walls.

Description

A kind of drum brake shoe press spring base

Technical field

The utility model is on a kind of drum brake shoe press spring base.

Background technology

Drum brake typically has two shoe brakes, is tensed between two shoe plates with return spring, while vertical direction is pressed Spring etc. makes to form thrust between the tendons of beef, mutton or pork and brake backing plate, prevents that shoe plate is crooked in brake, influences shoe plate normal use.

Connected between the drum brake tendons of beef, mutton or pork and brake backing plate of prior art using drift bolt, stage clip, press spring base, Drift bolt passes through the perforation of brake backing plate and the tendons of beef, mutton or pork, and compression spring sleeve is in drift bolt and is pressed on the tendons of beef, mutton or pork, then pushes down stage clip with press spring base, when After pushing down stage clip and drift bolt head is spilt press spring base, press spring base is rotated, drift bolt head is enclosed in the groove of press spring base, formed solid It is fixed.

But existing stage clip suit is made up of drift bolt, stage clip, press spring base, shares three parts, and part is more, during assembling, need Stage clip and press spring base are pushed down simultaneously and is rotated, and generally requiring could be fixed using specific purpose tool.On existing press spring base with drift bolt The perforation of cooperation and groove structure are more special, and material thickness is uneven, and processing technology is complicated, is unfavorable for processing.

Utility model content

The utility model provides a kind of drum brake shoe press spring base, and it matches to merge with drift bolt is fixed on brake On bottom plate, and press spring base provides the elastic press power along brake backing plate axial direction, wherein：The press spring base includes：By bullet The U-shaped body of spring steel sheet composition, includes in the two side of the U-shaped body：Lower surface and upper surface, the lower surface have The via being engaged with the axle of the drift bolt, the upper surface have the slotted eye with the matching ends of the drift bolt.

The new press spring base provides a U-shaped elastomer, and it forms the part for carrying spring function, and passes through two side walls Between elastic force drift bolt is relatively fixed.

Brief description of the drawings

Fig. 1 is press spring base schematic diagram；

Fig. 2 is press spring base and drift bolt cooperation schematic diagram；With

Fig. 3 is the utility model assembling schematic diagram.

Reference：1. upper surface；2. lower surface；3. circular perforations；4. slotted eye；5. groove；6. drift bolt；7. brake； 10. press spring base.

Embodiment

As shown in Figures 1 to 3, the utility model provides a kind of drum brake shoe press spring base, and it matches with drift bolt 6 and merged It is fixed on the bottom plate of brake 7, and press spring base 10 provides the elastic press power along the bottom plate axial direction of the brake 7, wherein： The press spring base 10 includes：The U-shaped body being made up of spring steel, include in the two side of the U-shaped body：Lower surface 2 With upper surface 1, the lower surface 2 has the via 3 being engaged with the axle of the drift bolt 6, and the upper surface 1 has wears with described The slotted eye 4 of the matching ends of nail 6.

The new press spring base provides a U-shaped elastomer, and it is the part for carrying spring function, and by two side walls it Between elastic force drift bolt is relatively fixed.

As a further improvement, there is groove 5 along the direction of the slotted eye 4, the upper surface 1.

As a further improvement, slotted eye described in the end vertical of the drift bolt 6 and leant with the bottom of the groove.

As a further improvement, the relatively described lower surface 2 in the upper surface 1 has outward-dipping angle.To be formed Bigger elastic bias force.

As a further improvement, the lower surface 2 is relative with the bottom plate of the brake 7.I.e. lower surface 2 is positioned at interior Side, corresponding upper surface 1 are located at outside.

In the utility model, press spring base is made and U-shaped using spring steel, and lower surface has a circle to wear Hole, upper surface, which has, is bent into groove type at one, grooved hole among groove.

As shown in Figures 2 and 3, during free state, there is certain angle between press spring base upper and lower side.During assembling, drift bolt passes through Brake backing plate is perforated, and is then passed through press spring base circular perforations, then compression press spring seat, drift bolt head is passed through slotted eye, and be located at The outside of upper surface, then 90 ° of drift bolt or press spring base are rotated, drift bolt head is contacted with the bottom of groove, now press spring base upper and lower side Face is compressed to form elastic force, and because the spacing completion of drift bolt locks, assembling is completed.

The utility model can reduce the building block quantity of drum brake stage clip suit, while appearance when increasing assembling Yi Du and optimization press spring base processing technology, the spring steel that press spring base can try out equal thickness are stamped to form.By press spring base It is designed to carry the part of spring function, while original labyrinth is being optimized to groove knot with the position that drift bolt coordinates Structure, simplify processing technology, also without there is special instrument to go to assemble during assembling, common pliers.

It should be appreciated that the utility model scope of the claimed is not limited to non-limiting embodiments, it should be understood that non-limiting reality Scheme is applied to illustrate as just example.The desired substantive protection domain of the application is more embodied in independent claims The scope of offer, and its dependent claims.

Claims (5)

1. a kind of drum brake shoe press spring base, it matches to merge with drift bolt is fixed on the bottom plate of brake, and press spring base Elastic press power along brake backing plate axial direction is provided, it is characterised in that：

The press spring base includes：The U-shaped body being made up of spring steel, include in the two side of the U-shaped body：Lower surface And upper surface, the lower surface have the via being engaged with the axle of the drift bolt, the upper surface has and the drift bolt The slotted eye of matching ends.

A kind of 2. drum brake shoe press spring base as claimed in claim 1, it is characterised in that：Along the direction of the slotted eye, The upper surface has groove.

A kind of 3. drum brake shoe press spring base as claimed in claim 2, it is characterised in that：The end vertical of the drift bolt The slotted eye simultaneously leans with the bottom of the groove.

A kind of 4. drum brake shoe press spring base as claimed in claim 3, it is characterised in that：The upper surface is relatively described Lower surface has outward-dipping angle.

A kind of 5. drum brake shoe press spring base as claimed in claim 4, it is characterised in that：The lower surface and the system The bottom plate of dynamic device is relative.