CN103362993B - Motorcycle drum-type brake shoe group - Google Patents
Motorcycle drum-type brake shoe group Download PDFInfo
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- CN103362993B CN103362993B CN201210099501.0A CN201210099501A CN103362993B CN 103362993 B CN103362993 B CN 103362993B CN 201210099501 A CN201210099501 A CN 201210099501A CN 103362993 B CN103362993 B CN 103362993B
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- brake shoe
- reinforced ribs
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- plate body
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Abstract
The present invention is a kind of motorcycle drum-type brake shoe group, it comprises two Brake shoes, this two Brake shoe is symmetricly set in pin in motorcycle brake mechanism and cam line both sides, and can controlled friction with the brake drum in brake mechanism and produce braking action, described Brake shoe between the depressed area of its shoe plate body both sides in form first respectively, second reinforced ribs, this is first years old, second reinforced ribs tilts to extend towards inner platform portion from the curtain plate portion of shoe plate body respectively, the intersection point of the first reinforced ribs center line of the Brake shoe being arranged at pin and cam line both sides is in pairs made to be positioned on pin or the outside of selling, the intersection point of the second reinforced ribs center line is positioned on cam or the outside of cam, by this, the intensity of strengthening Brake shoe, promote the anti-torsion deformability of Brake shoe.
Description
Technical field
The present invention is about a kind of motorcycle drum-type brake shoe group, and especially a kind of installing is placed in motorcycle brake mechanism, can produce the motorcycle drum-type brake shoe group of braking action in order to controlled friction with the brake drum in brake mechanism.
Background technique
Be arranged at the drum brake organization in motorcycle at present, it is mainly be arranged on engine sidewall or in wheel hub by a Brake shoe group, make it can controlled friction with the brake drum in brake mechanism and produce braking action, as shown in Figure 6, described Brake shoe group has two Brake shoes 20, it is I-shaped shoe plate sheet body 21 that described Brake shoe 20 includes a section, shoe plate body 21 one end forms a pin joint 22, shoe plate body 21 the other end forms a cam contact 23, and the pin 30 abutted with pin joint 22 in brake mechanism, the cam 40 in brake mechanism is abutted with cam contact 23, linking springs 50 between this two Brake shoe 20 2 end, by this, when motorcycle is braked, the cam contact 23 that system utilizes the cam 40 be driven to rotate to push against this two Brake shoe 20 moves outwardly, the brake material set by Brake shoe 20 outer circumferential face is made to contact brake drum friction and produce braking action.
In described motorcycle drum brake organization, produce powerful friction because its Brake shoe must can be biased driving with brake drum and carry out braking action, therefore, Brake shoe itself must have good anti-torsion deformability, but, the shoe plate body section configuration of aforementioned known Brake shoe is I-shaped, namely shoe plate body is between depressed area in the both sides, engagement plate portion in curtain plate portion and inner platform portion, it there is no any reinforcing structure, cause known Brake shoe to have the hypodynamic defect of anti-torsion energy of deformation.
As shown in Fig. 9 A to Fig. 9 G and Figure 10 A to Figure 10 H, in the known Brake shoe Free Modal Analysis result disclosed from those figure and stress analysis result, in modal analysis, in the state of resonant frequency MODE7, the frequency values of known Brake shoe is 2.060614E+03, its rigidity and strength deficiency is known because frequency values is on the low side, also the anti-torsion deformability of known Brake shoe is obviously not enough, separately from the stress analysis of known brake hoof power, the stress value of the A point of Brake shoe is 3.753E+03, the stress value of B point is 4.573E+04, the stress value of C point is 4.961E+04, the stress value of D point is 4.074E+04, the stress value of E point is the stress value of 5.289E+04 and F point is 1.979E+04, it serves to show that its stress concentrates on spring hook ear place, that is when pressure stress puts on Brake shoe curtain plate 1/3rd centre portion place, the stress concentrating on spring hook ear is out of shape critical value close to material, because mode is relatively low, be easy to excite mode when low frequency, and cause brake unstable properties and produce the different sound of sharp-pointed brake.
In addition, for the hypodynamic defect of known Brake shoe anti-torsion energy of deformation, once reinforced ribs was set up in having people further between the depressed area of the shoe plate body of known Brake shoe, the condition design such as position and angle between the depressed area being only located at shoe plate body because of reinforced ribs is not good, the anti-torsion deformability that after causing improvement, Brake shoe promotes still does not reach preferably state, to this, there is necessity of improvement further in fact.
Summary of the invention
Main purpose of the present invention is to provide a kind of motorcycle drum-type brake shoe group, and uncommon invention by this solves the hypodynamic defect of existing Brake shoe group anti-torsion energy of deformation.
Object is taken off before reaching, technological means proposed by the invention makes described motorcycle drum-type brake shoe group comprise two Brake shoes, one pin and a cam, this two Brake shoes system is symmetricly set in the both sides of described pin and cam center line, described Brake shoe comprises a shoe plate body, shoe plate body one end forms one in order to abut the pin joint of pin, the shoe plate body the other end forms one in order to abut the cam contact of cam, shoe plate body has engagement plate portion between curtain plate portion and inner platform portion, formed between a depressed area respectively in the both sides in engagement plate portion, wherein:
One first reinforced ribs and one second reinforced ribs is formed respectively between the depressed area of described shoe plate body both sides, described first reinforced ribs and second is mended rib and is connected curtain plate portion, inner platform portion and engagement plate portion, and the first reinforced ribs, second reinforced ribs one end tilt to extend towards inner platform portion from curtain plate portion respectively and are arranged at the both sides of pin and cam center line in pairs, the intersection point of the first reinforced ribs center line of this two Brake shoe be positioned on pin or be positioned at the outside of pin, the intersection point of the second reinforced ribs center line is positioned on cam or is positioned at the outside of cam.
Shape by aforementioned motorcycle drum-type brake shoe group is created, each Brake shoe is made to utilize the reinforced ribs of its customized configuration, the anti-torsion deformability being better than existing Brake shoe can be produced, guarantee to reach due laminating degree between the brake drum in the brake shoe that Brake shoe outer circumferential face attaches and brake mechanism.Separately by the setting of described reinforced ribs, decapacitation makes the stress at spring hook ear place reduce, the stress transfer acted on Brake shoe is made to be dispersed to pin joint and cam contact, or make the stress at the overall each position of Brake shoe all reduce, therefore effectively can eliminate the concentrated phenomenon of this body stress of shoe plate, reduce the generation that different sound of braking and may be reduced of Brake shoe distortion.
Accompanying drawing explanation
Fig. 1 is that the first preferred embodiment of motorcycle drum-type brake shoe group of the present invention is applied to the pin of wheel hub and the floor map of cam line both sides.
Fig. 2 is that the second preferred embodiment of motorcycle drum-type brake shoe group of the present invention is applied to the pin of wheel hub and the floor map of cam line both sides.
Fig. 3 is that the 3rd preferred embodiment of motorcycle drum-type brake shoe group of the present invention is applied to the pin of wheel hub and the floor map of cam line both sides.
Fig. 4 is the schematic appearance of a Brake shoe of the group of motorcycle drum-type brake shoe shown in Fig. 1.
Fig. 5 is the schematic perspective view presenting its shoe plate body section configuration after a Brake shoe of the group of motorcycle drum-type brake shoe shown in Fig. 1 cuts off.
Fig. 6 is that the pin of wheel hub and the floor map of cam line both sides are located in the assembling of existing motorcycle drum-type brake shoe.
Fig. 7 is the schematic perspective view of the Brake shoe in existing motorcycle drum-type brake shoe group shown in Fig. 6.
Fig. 8 is the schematic perspective view presenting its shoe plate body section configuration after the Brake shoe in existing motorcycle drum-type brake shoe group shown in Fig. 6 cuts off.
Fig. 9 A is the known Brake shoe in Free Modal Analysis 1.
Fig. 9 B is the present invention first preferred embodiment in Free Modal Analysis 1.
Fig. 9 C is the present invention second preferred embodiment in Free Modal Analysis 1.
Fig. 9 D is the present invention the 3rd preferred embodiment in Free Modal Analysis 1.
Fig. 9 E is the present invention first preferred embodiment in Free Modal Analysis 2.
Fig. 9 F is the present invention second preferred embodiment in Free Modal Analysis 2.
Fig. 9 G is the present invention the 3rd preferred embodiment in Free Modal Analysis 2.
Figure 10 A is the known Brake shoe in stress analysis 1.
Figure 10 B is the present invention first preferred embodiment in stress analysis 1.
Figure 10 C is the present invention second preferred embodiment in stress analysis 1.
Figure 10 D is the present invention the 3rd preferred embodiment in stress analysis 1.
Figure 10 E is the known Brake shoe in stress analysis 2.
Figure 10 F is the present invention first preferred embodiment in stress analysis 2.
Figure 10 G is the present invention second preferred embodiment in stress analysis 2.
Figure 10 H is the present invention the 3rd preferred embodiment in stress analysis 2.
Embodiment
As shown in Figure 1 to Figure 3, system discloses several preferred embodiments of motorcycle drum-type brake shoe group of the present invention, by those preferred embodiments graphic in can to see and motorcycle drum-type brake shoe group system of the present invention comprises two Brake shoe 1, pin 2 and cams 3, described two Brake shoes 1 are the line L both sides being symmetricly set in the center P2 of described pin 2 and the center P1 of cam 3.
The lamellar body of described Brake shoe 1 to be an essence be semi-circular shape, it includes a shoe plate body 10, and sells joint 11, cam contact 12, two spring hook ear 13,2 first reinforced ribs 141 and 2 second reinforced ribs 142, wherein:
Described shoe plate body 10 has a semicircular curtain plate portion 101, the inner platform portion 102 of one arc and the engagement plate portion 103 be integrally formed between curtain plate portion 101 and inner platform portion 102, as shown in Figure 5, shoe plate body 10 is made to form between a depressed area 104 respectively in bi-side, engagement plate portion 103, the section configuration of shoe plate body 10 is I-shaped, shoe plate body 10 two ends are respectively a first end and one second end, shoe plate body 10 and using the outer side surface in its curtain plate portion 101 as brake material commissure, the width in the inner platform portion 102 of described shoe plate body 10 can be less than the width in curtain plate portion 101, or, preferred embodiment as shown in Figures 4 and 5, the width W in inner platform portion 102 is general equal with the width W 1 in curtain plate portion 101, wherein better with the enforcement kenel that the width W in inner platform portion 102 is general equal with the width W 1 in curtain plate portion 101.
Described pin joint 11 is the first end forming in shoe plate body 10, and described pin joint 11 outer side surface forms a half-round recessed, in order to be connected to the outer circumferential face of described pin 2.
Described cam contact 12 is the second end forming in shoe plate body 10, and described cam contact 12 outer side surface system, in order to provide an angle iron set on it, is connected to the outer circumferential face of described cam 3 with described angle iron.
Described two spring hook ears 13 are be formed separately on the side, inner platform portion 102 of shoe plate body 10 first, second end contiguous, described spring hook ear 13 are respectively provided with a hook hole, in order to the position providing spring 4 to wear hook joint.
As shown in Figure 1, the side of pin 2 adjacent springs 4 is defined as the inner side of pin, and pin 2 is defined as the outside of pin away from the side of spring 4; The side of cam 3 adjacent springs 4 is defined as the inner side of cam 3, and cam 3 is defined as the outside of cam 3 away from the side of spring 4.
Described two Brake shoes 1 form one first reinforced ribs 141 and one second reinforced ribs 142 respectively in 104 between the depressed area of its shoe plate body 10 both sides, first reinforced ribs 141 is connected curtain plate portion 101 with the second reinforced ribs 142, inner platform portion 102 and engagement plate portion 103, and described first reinforced ribs 141, the centre portion place of 1/3rd is distinguished respectively towards inner platform portion 102 inclination extension in second reinforced ribs 142 one end from curtain plate portion 101 inner side surface, and be arranged at the intersection point 15a of the first reinforced ribs 141 center line 141a of the Brake shoe 1 of pin 2 and cam 3 line of centres both sides in pairs, 15b, 15c is positioned on pin 2 or is positioned at the outside of pin 2, the center line 142a intersection point 16a of the second reinforced ribs 142, 16b, 16c is positioned on cam 3 or the outside of cam 3, the intersection point 15a of the center line 141a of described first reinforced ribs 141, 15b, 15c, and the second center line 142a intersection point 16a of reinforced ribs 142, 16b, 16c is positioned at pin 2 with on cam 3 line of centres L.
First, second preferred embodiment as shown in Figures 1 and 2, described first reinforced ribs 141 and the second reinforced ribs 142 can be spaced between the depressed area of shoe plate body 10 in 104 and not to connect, or, one end that described first reinforced ribs 141 and the second reinforced ribs 142 adjoin curtain plate portion 101 is connected, or the 3rd preferred embodiment as shown in Figure 3, described first reinforced ribs 141 and the second reinforced ribs 142 arranged in a crossed manner between the depressed area of shoe plate body 10 in 104.
The present invention has done modal analysis and stress analysis further for front taking off each preferred embodiment, wherein Fig. 9 A to Fig. 9 G is each preferred embodiment of Brake shoe of the present invention (containing inner platform portion with or without widening two profiles state) and the modal analysis of known Brake shoe, and Figure 10 A to Figure 10 H is each preferred embodiment of Brake shoe of the present invention (containing inner platform portion with or without widening two profiles state) and the stress analysis of known Brake shoe.
From in the stress comparative analysis of each preferred embodiment of Brake shoe of the present invention shown in Fig. 9 A to Fig. 9 G and known Brake shoe:
The present invention first preferred embodiment (containing inner platform portion with or without widening two profiles state) is respectively 2.966737E+03,4.0795E+03 in resonant frequency MODE7 frequency values; Second preferred embodiment (inner platform portion is with or without widening two profiles state) is respectively 3.116050E+03,3.8011E+03 in resonant frequency MODE7 frequency values; 3rd preferred embodiment in resonant frequency MODE7 frequency values be 4.291539E+03,4.8387E+03, all higher than the frequency values (2.060614E+03) of known Brake shoe resonant frequency MODE7, the rigidity of each preferred embodiment of sequitur the present invention and intensity are higher than known Brake shoe.
Moreover, from the stress comparative analysis of each preferred embodiment of Brake shoe of the present invention shown in Figure 10 A to Figure 10 H and known Brake shoe:
The stress of the present invention first preferred embodiment (containing inner platform portion with or without widening two profiles state) in A point position (i.e. cam abutting part position) increases by 9.33% and 4.73%, stress in B point position (i.e. spring hook ear and inner platform portion cohesive position) reduces by 10.89% and 20.71%, stress in C point position (i.e. the punch position of spring hook ear) reduces 12.71% and 26.78%, stress in D point position (i.e. the punch position of another spring hook ear) increases by 0.44% and minimizing 27.53%, stress in E point position (i.e. the punch position of another spring hook ear) reduces 7.66% and 18.74%, stress in F point position (namely selling abutting part position) increases by 5.26% and 6.23%, though inner platform portion of the present invention increases by 0.44% without the stress of first preferred embodiment of widening in its D point position (i.e. the punch position of another spring hook ear), but stress increasing degree is very little, and the stress at shoe plate body major part position is all minimizing, therefore to Brake shoe generally speaking, the stress increase of this D point position is not enough to Brake shoe and produces significantly impact.
The stress of the present invention second preferred embodiment (containing inner platform portion with or without widening two profiles state) in A point position (i.e. cam abutting part position) reduces by 2.0% and increase by 5.75%, stress in B point position (i.e. spring hook ear and inner platform portion cohesive position) reduces by 37.48% and 34.52%, stress in C point position (i.e. the punch position of spring hook ear) reduces 37.18% and 36.29%, stress in D point position (i.e. the punch position of another spring hook ear) reduces 35.30% and 43.53%, stress in E point position (i.e. the punch position of another spring hook ear) reduces 35.05% and 27.44%, stress in F point position (namely selling abutting part position) reduces by 9.8% and increase by 3.54%.
The stress of the present invention the 3rd preferred embodiment (containing inner platform portion with or without widening two profiles state) in A point position (i.e. cam abutting part position) increases by 14.12% and 4.29%, stress in B point position (i.e. spring hook ear and inner platform portion cohesive position) reduces by 23.60% and 22.87%, stress in C point position (i.e. the punch position of spring hook ear) reduces 19.69% and 27.93%, stress in D point position (i.e. the punch position of another spring hook ear) reduces 12.67% and 24.953%, stress in E point position (i.e. the punch position of another spring hook ear) reduces 22.82% and 16.63%, stress in F point position (namely selling abutting part position) increases by 0.91% and 11.49%.
As from the foregoing, reinforced ribs of the present invention can effectively by the stress dispersion concentrated to pin joint and cam contact place, and then effectively improve and brake stability and reduce the situation of the different sound of sharp-pointed brake.
The above, only disclose a preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, any those skilled in the art are in the scope not departing from claim proposed by the invention, the Equivalent embodiments utilizing the done local of disclosed technology contents to change or modify, all still belongs in the scope of the claims in the present invention.
Reference numerals list
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Claims (9)
1. a motorcycle drum-type brake shoe group, it comprises two Brake shoes, pin and a cam, this two Brake shoe is symmetricly set in the line of centres both sides of described pin and cam, described Brake shoe comprises a shoe plate body, shoe plate body one end forms one in order to abut the pin joint of pin, the shoe plate body the other end forms one in order to abut the cam contact of cam, shoe plate body has engagement plate portion between curtain plate portion and inner platform portion, formed respectively between a depressed area in the both sides in engagement plate portion, it is characterized in that:
One first reinforced ribs and one second reinforced ribs is formed respectively between the depressed area of described shoe plate body both sides, described first reinforced ribs is connected curtain plate portion, inner platform portion and engagement plate portion with the second reinforced ribs, and the first reinforced ribs, second reinforced ribs one end respectively from curtain plate portion towards inner platform portion tilt extend, and be arranged at the both sides of pin and cam center line in pairs, the intersection point of the first reinforced ribs center line of this two Brake shoe be positioned on pin or be positioned at the outside of pin, the intersection point of the second reinforced ribs center line is positioned on cam or is positioned at the outside of cam.
2. motorcycle drum-type brake shoe group as claimed in claim 1, wherein, the intersection point of the first reinforced ribs center line of this two Brake shoe and the intersection point of the second reinforced ribs center line are positioned on the line of pin and cam center.
3. motorcycle drum-type brake shoe group as claimed in claim 1, wherein, the inner platform portion width of described shoe plate body is less than curtain plate portion width.
4. motorcycle drum-type brake shoe group as claimed in claim 2, wherein, the inner platform portion width of described shoe plate body is less than curtain plate portion width.
5. motorcycle drum-type brake shoe group as claimed in claim 1, wherein, the inner platform portion width of described shoe plate body is equal with curtain plate portion width.
6. motorcycle drum-type brake shoe group as claimed in claim 2, wherein, the inner platform portion width of described shoe plate body is equal with curtain plate portion width.
7. the motorcycle drum-type brake shoe group according to any one of claim 1 to 6, wherein, described first reinforced ribs and the second reinforced ribs are spaced between the depressed area of shoe plate body and do not connect.
8. the motorcycle drum-type brake shoe group according to any one of claim 1 to 6, wherein, one end that described first reinforced ribs and the second reinforced ribs adjoin curtain plate portion is connected.
9. the motorcycle drum-type brake shoe group according to any one of claim 1 to 6, wherein, described first reinforced ribs and the second reinforced ribs arranged in a crossed manner between the depressed area of shoe plate body in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210099501.0A CN103362993B (en) | 2012-04-06 | 2012-04-06 | Motorcycle drum-type brake shoe group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210099501.0A CN103362993B (en) | 2012-04-06 | 2012-04-06 | Motorcycle drum-type brake shoe group |
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| Publication Number | Publication Date |
|---|---|
| CN103362993A CN103362993A (en) | 2013-10-23 |
| CN103362993B true CN103362993B (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210099501.0A Active CN103362993B (en) | 2012-04-06 | 2012-04-06 | Motorcycle drum-type brake shoe group |
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| Country | Link |
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| CN (1) | CN103362993B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300353A (en) * | 1998-04-09 | 2001-06-20 | Pbr汽车有限公司 | Brake shoe and brake assembly |
| CN201099336Y (en) * | 2007-07-30 | 2008-08-13 | 台通车业(泰州)有限公司 | Left and right shoe for electric motor vehicle expansion brake |
| CN202001529U (en) * | 2010-12-23 | 2011-10-05 | 南安市省兴金属制品有限公司 | Motorcycle brake shoe |
| CN202017716U (en) * | 2011-04-27 | 2011-10-26 | 黄公平 | Special brake shoe carrier for Steyr front axle and Steyr rear axle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09264359A (en) * | 1996-03-29 | 1997-10-07 | Akebono Brake Ind Co Ltd | Brake shoe |
-
2012
- 2012-04-06 CN CN201210099501.0A patent/CN103362993B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300353A (en) * | 1998-04-09 | 2001-06-20 | Pbr汽车有限公司 | Brake shoe and brake assembly |
| CN201099336Y (en) * | 2007-07-30 | 2008-08-13 | 台通车业(泰州)有限公司 | Left and right shoe for electric motor vehicle expansion brake |
| CN202001529U (en) * | 2010-12-23 | 2011-10-05 | 南安市省兴金属制品有限公司 | Motorcycle brake shoe |
| CN202017716U (en) * | 2011-04-27 | 2011-10-26 | 黄公平 | Special brake shoe carrier for Steyr front axle and Steyr rear axle |
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| Publication number | Publication date |
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| CN103362993A (en) | 2013-10-23 |
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