CN104653662B - A kind of drum is stopped - Google Patents
A kind of drum is stopped Download PDFInfo
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- CN104653662B CN104653662B CN201510070889.5A CN201510070889A CN104653662B CN 104653662 B CN104653662 B CN 104653662B CN 201510070889 A CN201510070889 A CN 201510070889A CN 104653662 B CN104653662 B CN 104653662B
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- brake
- brake shoes
- rectangular block
- roll piece
- housing
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- 238000005096 rolling process Methods 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invention discloses a kind of drum to stop, comprise housing, one brake camshaft and two brake shoes be placed in housing, the outer end that brake camshaft is positioned at outside housing is in transmission connection with driving its brake arm rotated, the inner that brake camshaft is positioned at housing is provided with and encloses by two long limits and two minor faces the rectangular block connect, one end of two brake shoes is articulated with on housing, the other end of two brake shoes is the brake end that expands, described rectangular block is between the expansion brake end of two brake shoes, two short sides of described rectangular block all offer a groove, and two long side faces of the through rectangular block of the both sides of described groove difference, the roll piece that end face corresponding to brake shoes forms rolling friction is movably installed with in described groove.Adopt said structure, due to the present invention's employing is rolling friction, therefore can effectively reduce wearing and tearing, and the corresponding brake of reduction greatly driving force, realize the roll piece of rolling friction, structure is simple, easy to loading and unloading simultaneously.
Description
Technical field
The present invention relates to a kind of drum to stop, belong to Vehicular brake device field.
Background technique
Drum is stopped as the conventional braking device of existing vehicle, in the prior art, drum is stopped and has been generally included housing, one brake camshaft and two brake shoes be placed in housing, the outer end that brake camshaft is positioned at outside housing is in transmission connection with driving its brake arm rotated, the inner that brake camshaft is positioned at housing is provided with and encloses by two long limits and two minor faces the rectangular block connect, two brake shoes are symmetrical arranged, one end of two brake shoes is articulated with on housing, the other end of two brake shoes is the brake end that expands, described rectangular block is between the expansion brake end of two brake shoes, also reset tension spring is provided with between two brake shoes,
Under conventional sense, under the effect of reset tension spring, two long side faces of described rectangular block and the end contact of two brake shoes, namely two brake shoes are in closed configuration, when braking, brake arm drives brake camshaft to overcome the rotation of reset tension spring active force, thus rectangular block on drive brake camshaft rotates, namely two short sides of described rectangular block start to turn to two brake shoes end faces, and and formed between two brake shoes end faces and rub, force two brake shoes outwards to be opened, realize braking.But due in the prior art, mostly above-mentioned friction is the sliding friction formed between narrow plane, therefore not only there is rapid wear, cause rousing whole service life shortening of stopping, and due to sliding friction friction factor larger, therefore the driving force also causing driving brake camshaft to rotate also and then becomes large, thus the active force that when causing braking, needs are larger.
Also pertinent literature is had to propose above-mentioned sliding friction to be improved in the prior art, thus effectively reduce wearing and tearing and brake driving force, but be all realize correspondingly rolling friction by the cooperation of multiple parts or strengthen the area of contact of sliding friction in these patents, ubiquity complex structure, the problems such as handling inconvenience, as in CN201110263455.9 patent, it was set with a brake wheel before this on described rectangular block, then on brake wheel outer surface, some grooves are offered, during brake, rolled along the groove on brake wheel outer surface by roller, the rolling friction between roller and brake shoes is realized with this, roll due to relative between roller with brake wheel, therefore several limit structures of relative set are also needed effectively to limit the rolling track of roller, structure is very complicated, required component are more, cost of production is high, need between each component to coordinate to install simultaneously, therefore also there is the problems such as handling inconvenience.
Summary of the invention
For the deficiencies in the prior art, the invention provides one and not only can effectively reduce wearing and tearing and brake driving force, and structure simpler, load and unload drum more easily and stop.
For achieving the above object, the invention provides a kind of drum to stop, comprise housing, one brake camshaft and two brake shoes be placed in housing, the outer end that brake camshaft is positioned at outside housing is in transmission connection with driving its brake arm rotated, the inner that brake camshaft is positioned at housing is provided with and encloses by two long limits and two minor faces the rectangular block connect, two brake shoes are symmetrical arranged, one end of two brake shoes is articulated with on housing, the other end of two brake shoes is the brake end that expands, described rectangular block is between the expansion brake end of two brake shoes, also reset tension spring is provided with between two brake shoes, two short sides of described rectangular block all offer a groove, and two long side faces of the through rectangular block of the both sides of described groove difference, the roll piece that end face corresponding to brake shoes forms rolling friction is movably installed with in described groove, and the external diameter of described roll piece is greater than the bond length of rectangular block.
The invention has the beneficial effects as follows: adopt said structure, because the present invention is provided with the roll piece that end face corresponding to brake shoes forms rolling friction on two short sides of described rectangular block, when therefore braking, described roll piece directly forms rubbing contact with the corresponding end face of brake shoes by replacing the short side of rectangular block, thus realize rolling friction, sliding friction compared to existing technology by being formed between face and face, can effectively reduce wearing and tearing, and the corresponding brake of reduction greatly driving force.In addition, the both sides of described groove respectively with two through settings in long side face of rectangular block, and make the external diameter of described roll piece be greater than the bond length of rectangular block, rectangular block then all can be made to rotate after, the described roll piece energy very first time forms rubbing contact with the corresponding end face of brake shoes, thus makes more reasonable structure, brake more smooth and easy.
The present invention can be set to described roll piece further by the hinged groove being fixed on described rectangular block of latch, and the central axis of described latch and the centerline axis parallel of brake camshaft.By above-mentioned setting, because described roll piece adopts latch to be directly fixed in the groove of described rectangular block, therefore structure is simple, easy to loading and unloading.
It is axle sleeve that the present invention also can be set to described roll piece further.This structure is the simplest, and assembling also facilitates, and cost of production is also minimum.
It is gear hobbing cover outer peripheral surface being evenly equipped with double wedge that the present invention also can be set to described roll piece further, the corresponding end face of two brake shoes is correspondingly provided with the flank of tooth forming engagement rolling with described double wedge.Adopt said structure, by the engagement rolling of described double wedge and the flank of tooth, gear hobbing effectively can be prevented to be enclosed within when brake shoes end face rolls and occur skidding, thus effectively improve the stationarity that roll piece rolls, and then also just effectively improve the stability of brake.
It is the ball bearing be made up of inner ring, outer ring and some balls that the present invention also can be set to described roll piece further, and inner ring suit is fixed on latch, and described some ball correspondences are loaded between inner ring and outer ring.Adopt said structure, described roll piece adopts ball bearing, then can make to keep good smoothness and flexibility ratio when roll piece and the rolling friction of brake shoes phase.
It is the roller bearing be made up of inner ring, outer ring and some rollers that the present invention also can be set to described roll piece further, and inner ring suit is fixed on latch, and described some roller correspondences are loaded between inner ring and outer ring.Adopt said structure, described roll piece adopts roller bearing, not only can make to keep good smoothness when roll piece and the rolling friction of brake shoes phase, and compared to ball bearing, the bearing capacity of roller bearing will be better.
It is the roller bearing be made up of outer ring and some rollers that the present invention also can be set to described roll piece further, and described some roller correspondences are loaded between latch and outer ring.Adopt said structure, equal the inner ring of traditional roller bearing to remove like this, and directly roller is arranged on latch, so not only remain the characteristic of original roller bearing, and further simplify structure, reduce cost of production.
Accompanying drawing explanation
Fig. 1 is the first concrete structure schematic diagram of the present invention;
Fig. 2 is the A portion enlarged view of Fig. 1;
Fig. 3 is the second concrete structure schematic diagram of the present invention;
Fig. 4 is the B portion enlarged view of Fig. 3;
Fig. 5 is the third concrete structure schematic diagram of the present invention;
Fig. 6 is the C portion enlarged view of Fig. 5;
Fig. 7 is the 4th kind of concrete structure schematic diagram of the present invention;
Fig. 8 is the D portion enlarged view of Fig. 7;
Fig. 9 is the stereogram of brake camshaft;
Figure 10 is wherein a kind of E-E sectional drawing of Fig. 6;
Figure 11 is the another kind of E-E sectional drawing of Fig. 6.
Embodiment
As Fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, give a kind of drum shown in 11 to stop, comprise housing 1, one brake camshaft 3 and two brake shoes 2 be placed in housing 1, the outer end that brake camshaft 3 is positioned at outside housing 1 is in transmission connection with driving its brake arm 5 rotated, the inner that brake camshaft 3 is positioned at housing 1 is provided with and encloses by two long limits and two minor faces the rectangular block 4 connect, two long side faces 43 of described rectangular block 4 and two short sides 41 can be traditional plane structures, it can certainly be globoidal structure, between long side face 43 with short side 41, preferred arc surface transition is connected.Two brake shoes 2 are symmetrical arranged, a projection 11 is provided with in described housing 1, one end and the described projection 11 of two brake shoes 2 form hinged being rotatably assorted, the other end of two brake shoes 2 is the brake end that expands, described rectangular block 4 is between the expansion brake end of two brake shoes 2, reset tension spring 21 is also provided with between two brake shoes 2, two short sides 41 of described rectangular block 4 all offer a groove 42, and two long side faces 43 of the through rectangular block 4 of the both sides of described groove 42 difference, the roll piece that end face corresponding to brake shoes 2 forms rolling friction is movably installed with in described groove 42, and the external diameter of described roll piece is greater than the bond length of rectangular block 4.By adopt said structure, due to of the present invention be rolling friction, therefore can effectively reduce the friction on brake camshaft 3 between rectangular block 4 and brake shoes 2, and correspondingly reduce brake driving force.
Described roll piece is preferably by the hinged groove 42 being fixed on described rectangular block 4 of latch 44, and the centerline axis parallel of the central axis of described latch 44 and brake camshaft 3.By above-mentioned setting, because described roll piece adopts latch 44 to be directly fixed in the groove 42 of described rectangular block 4, therefore structure is simple, easy to loading and unloading.
Roll piece described is as illustrated in fig. 1 and 2 axle sleeve 6.This structure is the simplest, and assembling also facilitates, and cost of production is also minimum.Roll piece described be as shown in Figures 3 and 4 gear hobbing cover 7, two brake shoes 2 outer peripheral surface being evenly equipped with double wedge 71 corresponding end face on be correspondingly provided with the flank of tooth 22 forming engagement rolling with described double wedge 71.Adopt said structure, by the engagement rolling of described double wedge 71 with the flank of tooth 22, occur skidding when can effectively prevent gear hobbing cover 7 from rolling on brake shoes 2 end face, thus effectively improve the stationarity of roll piece rolling, and then also just effectively improve the stability of brake.Roll piece described as illustrated in Figures 5 and 6 can select the ball bearing be made up of inner ring 81, outer ring 82 and some balls 83, and inner ring 81 suit is fixed on latch 44, and described some balls 83 correspondence is loaded between inner ring 81 and outer ring 82.Can make like this to keep good smoothness and flexibility ratio when roll piece and brake shoes 2 phase rolling friction.Certainly, described roll piece also can select the roller bearing be made up of inner ring 81, outer ring 82 and some rollers 84, and inner ring 81 suit is fixed on latch 44, and described some rollers 84 correspondence is loaded between inner ring 81 and outer ring 82.So not only can make to keep good smoothness when roll piece and the rolling friction of brake shoes phase, and compared to ball bearing, the bearing capacity of roller bearing will be better.When the roll piece in Fig. 6 is ball bearing, its sectional drawing is structure as shown in Figure 10; When the roll piece in Fig. 6 is roller bearing, its sectional drawing is structure as shown in figure 11.Certainly as shown in FIG. 7 and 8, described roll piece also can select the roller bearing be made up of outer ring 82 and some rollers 84, and described some rollers 84 correspondence is loaded between latch 44 and outer ring 82.Equal the inner ring of traditional roller bearing to remove like this, and directly roller 84 is arranged on latch 44, so not only remain the characteristic of original roller bearing, and further simplify structure, reduce cost of production.
Claims (6)
1. a drum is stopped, comprise housing, one brake camshaft and two brake shoes be placed in housing, the outer end that brake camshaft is positioned at outside housing is in transmission connection with driving its brake arm rotated, the inner that brake camshaft is positioned at housing is provided with and encloses by two long limits and two minor faces the rectangular block connect, two brake shoes are symmetrical arranged, one end of two brake shoes is articulated with on housing, the other end of two brake shoes is the brake end that expands, described rectangular block is between the expansion brake end of two brake shoes, also reset tension spring is provided with between two brake shoes, it is characterized in that: two short sides of described rectangular block all offer a groove, and two long side faces of the through rectangular block of the both sides of described groove difference, the roll piece that end face corresponding to brake shoes forms rolling friction is movably installed with in described groove, and the external diameter of described roll piece is greater than the bond length of rectangular block, described roll piece is by the hinged groove being fixed on described rectangular block of latch, and the central axis of described latch and the centerline axis parallel of brake camshaft.
2. one drum according to claim 1 is stopped, and it is characterized in that: described roll piece is axle sleeve.
3. one drum according to claim 1 is stopped, and it is characterized in that: described roll piece is gear hobbing cover outer peripheral surface being evenly equipped with double wedge, the corresponding end face of two brake shoes is correspondingly provided with the flank of tooth forming engagement rolling with described double wedge.
4. one drum according to claim 1 is stopped, and it is characterized in that: described roll piece is the ball bearing be made up of inner ring, outer ring and some balls, and inner ring suit is fixed on latch, and described some ball correspondences are loaded between inner ring and outer ring.
5. one drum according to claim 1 is stopped, and it is characterized in that: described roll piece is the roller bearing be made up of inner ring, outer ring and some rollers, and inner ring suit is fixed on latch, and described some roller correspondences are loaded between inner ring and outer ring.
6. one drum according to claim 1 is stopped, and it is characterized in that: described roll piece is the roller bearing be made up of outer ring and some rollers, described some roller correspondences are loaded between latch and outer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070889.5A CN104653662B (en) | 2015-02-11 | 2015-02-11 | A kind of drum is stopped |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510070889.5A CN104653662B (en) | 2015-02-11 | 2015-02-11 | A kind of drum is stopped |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104653662A CN104653662A (en) | 2015-05-27 |
| CN104653662B true CN104653662B (en) | 2016-04-06 |
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ID=53245156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510070889.5A Active CN104653662B (en) | 2015-02-11 | 2015-02-11 | A kind of drum is stopped |
Country Status (1)
| Country | Link |
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| CN (1) | CN104653662B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424664B (en) * | 2017-08-29 | 2020-08-25 | 比亚迪股份有限公司 | Drum brake and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305252A (en) * | 2011-09-09 | 2012-01-04 | 许志明 | Improved drum brake structure |
| CN102322488A (en) * | 2011-09-07 | 2012-01-18 | 许志明 | A kind of novel drum is stopped |
| CN103899683A (en) * | 2014-04-17 | 2014-07-02 | 周广如 | Actuating expanding device for automobile drum brake and drum brake |
| CN104613102A (en) * | 2015-02-13 | 2015-05-13 | 长兴华亿机电有限公司 | Drum brake |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070051570A1 (en) * | 2005-08-23 | 2007-03-08 | Hendrickson Bruce W | Brake spider |
-
2015
- 2015-02-11 CN CN201510070889.5A patent/CN104653662B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322488A (en) * | 2011-09-07 | 2012-01-18 | 许志明 | A kind of novel drum is stopped |
| CN102305252A (en) * | 2011-09-09 | 2012-01-04 | 许志明 | Improved drum brake structure |
| CN103899683A (en) * | 2014-04-17 | 2014-07-02 | 周广如 | Actuating expanding device for automobile drum brake and drum brake |
| CN104613102A (en) * | 2015-02-13 | 2015-05-13 | 长兴华亿机电有限公司 | Drum brake |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104653662A (en) | 2015-05-27 |
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Effective date of registration: 20200708 Address after: Lucheng District of Wenzhou City, Zhejiang province 325000 riverside Street stool Bridge No. 67 building 302 room 5 Patentee after: Zhu Qidong Address before: 325000 Zhejiang Province, Wenzhou city Longwan District hi tech Industrial Park, Aojiang Road No. 81 Building 2 floor B Patentee before: WENZHOU ZHICHUANG TECHNOLOGY Co.,Ltd. |
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