CN107218321A - A kind of high-precision arm for automatically regulating clearance of brake - Google Patents
A kind of high-precision arm for automatically regulating clearance of brake Download PDFInfo
- Publication number
- CN107218321A CN107218321A CN201710554947.0A CN201710554947A CN107218321A CN 107218321 A CN107218321 A CN 107218321A CN 201710554947 A CN201710554947 A CN 201710554947A CN 107218321 A CN107218321 A CN 107218321A
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- tooth
- gear
- engagement
- wheel
- bevel pinion
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 14
- 230000033001 locomotion Effects 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 241000949477 Toona ciliata Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of high-precision arm for automatically regulating clearance of brake, including housing, worm screw, worm gear, control arm, Wimble tooth-like clutch, little gear, mobile engagement wheel, engagement wheel, connecting shaft, bevel pinion, worm gear is connected with upper end worm screw in housing, worm screw sets cone tooth, cone tooth is engaged with the inner cone tooth of right side Wimble tooth-like clutch, helical teeth outside Wimble tooth-like clutch is engaged with lower end bevel pinion, side keyway is set in the left side of bevel pinion, the square key that side keyway engages wheel right-hand member with left side is connected, engagement wheel moves the end face rake tooth engagement for engaging wheel with left side, the gear teeth of mobile engagement wheel excircle engage connection with the internal tooth of little gear, the control arm connection in little gear and left side, present invention employs the small helical gear pair of gearratio, it is the stability that ensure that adjustment arm function from structure, solve the difficulty that worm and gear assembling is limited by axial location, also eliminate bevel pinion and only easily loosened by interference fit with engaging between cog, easily skid, easily rupturable failure.
Description
Technical field
The present invention relates to a kind of brake device for car class technical field, applied in the adjustment arm of automotive brake component, have
Body is related to a kind of high-precision arm for automatically regulating clearance of brake.
Background technology
Arm for automatically regulating clearance of brake, referred to as " automatic adjusting arm ", as its name suggests, exactly can in real time, automatically be adjusted
The device of whole braking gap, it is ensured that braking gap is in a suitable numerical value, can make brake in time, reliably, for row
Car is highly beneficial safely.If in addition, equipment ABS vehicle does not assemble automatic adjusting arm and cannot ensure to realize best effective
Really, because manually adjusting brake clearance, due to adjusting the height of technical ability, it is difficult to ensure that the brake clearance one between each wheel
Cause, so as to cause the arm of force of different braking wheel cylinder, brake force to differ larger situation.
Using arm for automatically regulating clearance of brake, there are several obviously benefits：Between maintaining between friction plate and brake rim
Constant, the balance for keeping vehicle to brake of gap；Keep optimal brake reaction time, it is ensured that give full play to ABS performance；It is maximum
The thrust and stroke of the utilization air chamber of change, reduce compressed air loss and fuel-economizing；The hand regulation arm automatic backlash that compares is adjusted
Arm can make vehicle shorten braking distance；The time that maintenance is stopped work is reduced, efficiency is improved.
Arm for automatically regulating clearance of brake structure has a variety of on the market at present, and the maximum Haldex that also counts of occupation rate of market is tied
Structure.
The S-ABA automatic adjusting arms of Haldex structures are by housing, worm gear, worm screw, Wimble tooth-like clutch, rake tooth one-way clutch
The main part compositions such as device, small gear worm gear pair, braking corner sensing control arm component.When sensing automobile brake by braking corner
The size of brake clearance, Wimble tooth-like clutch distinguishes braking corner caused by deformation caused by brake rigidity and brake clearance
Open, such automatic adjusting arm just can normally recognize automobile Excessive brake gap and be adjusted in setting interstice coverage, to protect
Demonstrate,prove automobile brake perfrmance.
This adjustment arm, there is three problems in practice：
First problem：The structure employs one group " small gear worm gear pair ", when being engaged due to worm and gear, in worm gear
The heart requires higher so that the corresponding size requirement to its spacing blind nut, housing is just tight.Meanwhile, the product is in actual entrucking
There is an action：It is required that rotary worm drives small gear, small worm is driven to rotate in turn.It will be appreciated that worm drive worm gear
Simply, but just extremely difficult in turn, high to pitch wheel requirement on machining accuracy, the two are " it is required that height " result in system
Manufacturing accuracy is high, and cost drop is not got off, and competitiveness is poor；
Second Problem：Gearratio is big, and regulations speed is too low, causes to adjust insensitive to gap.According to Haldex companies certainly
The data display that oneself announces, S-ABA regulations speeds about 3%.2.5% is should be by theoretical calculation.Have data and it was verified that by
It is too low in regulations speed, cause the change to brake clearance insensitive, so as to cause the product adjustment function to be not sufficiently stable；
3rd problem, on small worm head, press-in has an one way engagement wheel, and the two is carried out using interference fit
Assembling.Often occur the problem of small worm is loosened by pressure break, both work soon in practice, fault rate is high.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art to be adjusted automatically there is provided a kind of high-precision brake clearance
Whole arm, including it is housing, worm screw, worm gear, control arm, Wimble tooth-like clutch, little gear, mobile engagement wheel, engagement wheel, connecting shaft, small
Worm gear is connected with upper end worm screw in helical gear, housing, and worm screw sets cone tooth, and cone tooth is engaged with the inner cone tooth of right side Wimble tooth-like clutch,
Helical teeth outside Wimble tooth-like clutch is engaged with lower end bevel pinion, sets side keyway in the left side of bevel pinion, side keyway with
The square key of left side engagement wheel right-hand member is connected, and engagement wheel moves the end face rake tooth engagement for engaging wheel, mobile engagement wheel with left side
The gear teeth of excircle engage connection with the internal tooth of little gear, and the control arm in little gear and left side is connected, and present invention employs transmission
It is the stability that ensure that adjustment arm function from structure than small helical gear pair, solves worm and gear assembling by axial location
Limitation difficulty, also eliminate bevel pinion only easily loosen, easily skidded by interference fit with engaging between cog, it is easily rupturable therefore
Barrier.
To reach above-mentioned purpose, the technical scheme is that：A kind of high-precision arm for automatically regulating clearance of brake, including
Housing, worm screw, worm gear, control arm, Wimble tooth-like clutch, little gear, mobile engagement wheel, engagement wheel, connecting shaft, bevel pinion, institute
State and worm gear is set in housing, the driving cog of the worm gear is connected with the motion thread engagement of upper end worm screw, on the right side of the motion thread
The right side of step sets cone tooth, and the inner cone tooth for the Wimble tooth-like clutch that the cone tooth is arranged with right side polished rod is engaged, it is described cone tooth from
Uniform some helical teeth outside clutch, the helical teeth is engaged with lower end bevel pinion, and the endoporus of the bevel pinion is connected shell with two ends
The connecting shaft of body is fixed, and side keyway is set in the left side of bevel pinion, and the side keyway engages the square of wheel right-hand member with left side
Shape key is connected, and the engagement wheel is engaged with the end face rake tooth that wheel is engaged in left side movement, and the wheel of excircle is taken turns in the mobile engagement
Tooth engages connection, the control arm connection in the little gear and left side with the internal tooth of little gear.
The Wimble tooth-like clutch is that connection is engaged in right-angled intersection with the bevel pinion of lower end.
Adjustment campaign of the control arm to gap, be by a pair of helical angles in 45 ° of helical gear pair intersect it is in 90 ° come
Realize.
It is one-way clutch mechanism between the engagement wheel and little gear, cancels the former mode with interference fit to ensure the two
Fastening, but be improved to be connected the two by the Embedded structure of square key and side keyway, will not occur relative garden Zhou Yun
It is dynamic.
The polished rod diameter of the worm screw is by traditionalIt is changed toPolished rod is set with boring the connecting portion of tooth
Transition arc.
The beneficial effects of the invention are as follows：It is that ensure that adjustment from structure present invention employs the small helical gear pair of gearratio
The stability of arm function, solves the difficulty that worm and gear assembling is limited by axial location, also eliminates bevel pinion with nibbling
Conjunction between cog is only by interference fit easily loosening, easily skidding, easily rupturable failure.
Brief description of the drawings
Fig. 1 is schematic diagram of the invention；
Fig. 2 is Fig. 1 left view；
Fig. 3 is structure installation diagram of the invention；
Fig. 4 be in Fig. 3 A to structure installation diagram；
Fig. 5 is the worm screw schematic diagram in Fig. 3；
Fig. 6 is to engage the schematic diagram of wheel in Fig. 4；
Fig. 7 is Fig. 6 left view；
Fig. 8 is small helical gear schematic diagram in Fig. 4；
Fig. 9 is Fig. 8 left view；
Figure 10 is the schematic diagram of Wimble tooth-like clutch in Fig. 3.
In figure：Housing 1, worm screw 2, motion thread 201, polished rod 203, cone tooth 204, transition arc 205, worm gear 3, control arm
4th, Wimble tooth-like clutch 5, helical teeth 501, inner cone tooth 502, little gear 6, mobile engagement wheel 7, engagement wheel 8, square key 801, connecting shaft
9th, bevel pinion 10, side keyway 101.
Embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
As shown in Fig. 1~Figure 10, a kind of high-precision arm for automatically regulating clearance of brake, including housing 1, worm screw 2, worm gear 3,
Control arm 4, Wimble tooth-like clutch 5, little gear 6, mobile engagement wheel 7, engagement wheel 8, connecting shaft 9, bevel pinion 10, the housing 1
Worm gear 3 is inside set, the driving cog of the worm gear 3 is connected with the engagement of motion thread 201 of upper end worm screw 2, and the motion thread 201 is right
The right side of side stage rank sets cone tooth 204, the inner cone tooth 502 for the Wimble tooth-like clutch 5 that the cone tooth 204 is arranged with right side polished rod 203
Engagement, the outer uniform some helical teeth 501 of the Wimble tooth-like clutch 5, the helical teeth 501 is engaged with lower end bevel pinion 10, described small
The connecting shaft 9 that the endoporus of helical gear 10 is connected housing 1 with two ends is fixed, and side keyway 101 is set in the left side of bevel pinion 10,
The square key 801 that the side keyway 101 engages 8 right-hand members of wheel with left side is connected, and the engagement wheel 8 engages wheel 7 with left side movement
The engagement of end face rake tooth, the gear teeth of 7 excircles of the mobile engagement wheel are engaged with the internal tooth of little gear 6 to be connected, the small tooth
Wheel 6 is connected with the control arm 4 in left side, present invention employs the small helical gear pair of gearratio, is that ensure that adjustment arm work(from structure
The stability of energy, solves the difficulty that worm and gear assembling is limited by axial location, also eliminates bevel pinion and engaging tooth
Between only by interference fit easily loosen, easily skid, easily rupturable failure.
The Wimble tooth-like clutch 5 is connected with the bevel pinion 10 of lower end for right-angled intersection engagement.
Adjustment campaign of the control arm 4 to gap, be by a pair of helical angles in 45 ° of helical gear pairs intersect it is in 90 ° come
Realize.
It is one-way clutch mechanism between the engagement wheel 8 and little gear 8, cancels the former mode with interference fit to ensure two
Person fastens, but is improved to be connected the two with the Embedded structure of side keyway 101 by square key 801, will not occur phase
To garden Zhou Yundong.
The diameter of polished rod 203 of the worm screw 2 is by traditionalIt is changed toPolished rod 203 and cone tooth 204
Connecting portion sets transition arc 205.
Scheme is implemented with practical application, and when automobile has excessive gaps, the final stage discharged in automobile brake is controlled
The driving pinion 6 of arm 4, little gear 6 is nested together with the mobile wheel 7 that engages, therefore the also concomitant rotation of wheel 7 is engaged in movement, passes through end face
Rake tooth driving bevel pinion 10 is rotated, and bevel pinion 10 meshes together with Wimble tooth-like clutch 5, from last driving worm screw 2, snail
Wheel 3 is rotated, and realizes the purpose of gap adjustment.
In order to improve the regulations speed of adjustment arm, this programme abandons the structure of original " worm gear transmission ratio is big ",
And employ " the small helical gear pair of gearratio " so that adjustment arm improves 2.5 times to the sensitiveness that gap changes, and is from structure
It ensure that the stability of adjustment arm function.
Limited as a result of the assembling of " helical gear pair ", therefore do not have " worm and gear by axial location " difficulty：Transmission
After reduction, this pair of helical gear pair no matter who active drive, all very comfortable are moved, and greatly reduce product to part processing precision
Requirement, reduction production cost and defective products rate loss.
In order to prevent bevel pinion 10 from taking turns the phenomenon for sending out skidding between 8 with engaging, increase when this programme is designed on engagement wheel 8
Two symmetrical square keys are added, the key is stuck in the side keyway of bevel pinion 10, is only leaned on thus eliminating the need the two
Interference fit easily loosens, easily rupturable failure.
By using the small helical gear pair of gearratio so that the external diameter of Wimble tooth-like clutch 5 have dropped, the housing of the part is assembled
Endoporus is in the case of equal appearance and size, and entity size is increased, and reduces processing capacity, adds the intensity of housing.
In order to improve the effective length of cone tooth, while convenient processing, this programme by worm screw smooth bar part fromIt is changed toOn the premise of proof strength enough, conveniently bores tooth processing, the product weight of mitigation.
The general principle and principal character of the present invention, and advantages of the present invention has been shown and described above, the industry
Technical staff is also aware that the present invention is not limited by above-mentioned case study on implementation, and described in above-mentioned case study on implementation and specification is
Illustrate the principle of the present invention, under the premise of present invention design category is not departed from, various changes and modifications of the present invention are possible, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (5)
1. a kind of high-precision arm for automatically regulating clearance of brake, it is characterised in that：Including housing (1), worm screw (2), worm gear (3),
Control arm (4), Wimble tooth-like clutch (5), little gear (6), mobile engagement wheel (7), engagement wheel (8), connecting shaft (9), bevel pinion
(10) worm gear (3), is set in the housing (1), the driving cog of the worm gear (3) is nibbled with the motion thread (201) of upper end worm screw (2)
The right side for closing step on the right side of connection, the motion thread (201) sets cone tooth (204), the cone tooth (204) and right side polished rod
(203) inner cone tooth (502) engagement for the Wimble tooth-like clutch (5) being arranged, the Wimble tooth-like clutch (5) uniform some helical teeth outside
(501), the helical teeth (501) is engaged with lower end bevel pinion (10), and the endoporus of the bevel pinion (10) is connected shell with two ends
The connecting shaft (9) of body (1) is fixed, and side keyway (101), the side keyway (101) are set in the left side of bevel pinion (10)
The square key (801) for engaging wheel (8) right-hand member with left side is connected, and the engagement wheel (8) moves the end face three for engaging wheel (7) with left side
Angle tooth engagement, the gear teeth of described mobile engagement wheel (7) excircle are connected with the internal tooth engagement of little gear (6), the little gear (6)
It is connected with the control arm (4) in left side.
2. a kind of high-precision arm for automatically regulating clearance of brake as claimed in claim 1, it is characterised in that：The Wimble tooth-like clutch
(5) it is connected with the bevel pinion (10) of lower end for right-angled intersection engagement.
3. a kind of high-precision arm for automatically regulating clearance of brake as claimed in claim 1, it is characterised in that：The control arm (4)
Adjustment campaign to gap, intersects in 90 ° realize by a pair of helical angles in 45 ° of helical gear pairs.
4. a kind of high-precision arm for automatically regulating clearance of brake as claimed in claim 1, it is characterised in that：The engagement wheel (8)
It is one-way clutch mechanism between little gear (6), cancels the former mode with interference fit to ensure that the two is fastened, but be improved to
The two is connected with side keyway (101) Embedded structure by square key (801), will not occur relative garden Zhou Yundong.
5. a kind of high-precision arm for automatically regulating clearance of brake as claimed in claim 1, it is characterised in that：The worm screw (2)
Polished rod (203) diameter is by traditionalIt is changed toThe connecting portion of polished rod (203) and cone tooth (204) was set
Cross circular arc (205).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554947.0A CN107218321A (en) | 2017-07-10 | 2017-07-10 | A kind of high-precision arm for automatically regulating clearance of brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554947.0A CN107218321A (en) | 2017-07-10 | 2017-07-10 | A kind of high-precision arm for automatically regulating clearance of brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107218321A true CN107218321A (en) | 2017-09-29 |
Family
ID=59952104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710554947.0A Pending CN107218321A (en) | 2017-07-10 | 2017-07-10 | A kind of high-precision arm for automatically regulating clearance of brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107218321A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1873252A (en) * | 2005-05-31 | 2006-12-06 | 杨位本 | Self-adjusting arm for braking automobile |
| CN102748415A (en) * | 2012-07-24 | 2012-10-24 | 四川柯世达汽车制动系统集团有限公司 | Worm gear type brake arm capable of automatically adjusting brake clearance |
| CN202674118U (en) * | 2012-07-24 | 2013-01-16 | 四川柯世达汽车制动系统集团有限公司 | Worm gear type brake arm capable of automatically adjusting brake clearance |
| CN102927177A (en) * | 2012-10-28 | 2013-02-13 | 陈槐 | Double worm gear braking adjusting arm |
| CN202746467U (en) * | 2012-09-13 | 2013-02-20 | 瑞立集团瑞安汽车零部件有限公司 | Automatic automobile brake gap adjusting arm, brake device and automobile |
| CN204458936U (en) * | 2015-02-28 | 2015-07-08 | 苏州仁和老河口汽车股份有限公司 | A kind of automatic adjusting arm for vehicle brake gap |
| CN204533306U (en) * | 2015-01-26 | 2015-08-05 | 湖北中翰制动系统有限公司 | A kind of helical gear automatic adjusting arm |
| CN207349324U (en) * | 2017-07-10 | 2018-05-11 | 绍兴驰达汽车配件制造有限公司 | A kind of high-precision arm for automatically regulating clearance of brake |
-
2017
- 2017-07-10 CN CN201710554947.0A patent/CN107218321A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1873252A (en) * | 2005-05-31 | 2006-12-06 | 杨位本 | Self-adjusting arm for braking automobile |
| CN102748415A (en) * | 2012-07-24 | 2012-10-24 | 四川柯世达汽车制动系统集团有限公司 | Worm gear type brake arm capable of automatically adjusting brake clearance |
| CN202674118U (en) * | 2012-07-24 | 2013-01-16 | 四川柯世达汽车制动系统集团有限公司 | Worm gear type brake arm capable of automatically adjusting brake clearance |
| CN202746467U (en) * | 2012-09-13 | 2013-02-20 | 瑞立集团瑞安汽车零部件有限公司 | Automatic automobile brake gap adjusting arm, brake device and automobile |
| CN102927177A (en) * | 2012-10-28 | 2013-02-13 | 陈槐 | Double worm gear braking adjusting arm |
| CN204533306U (en) * | 2015-01-26 | 2015-08-05 | 湖北中翰制动系统有限公司 | A kind of helical gear automatic adjusting arm |
| CN204458936U (en) * | 2015-02-28 | 2015-07-08 | 苏州仁和老河口汽车股份有限公司 | A kind of automatic adjusting arm for vehicle brake gap |
| CN207349324U (en) * | 2017-07-10 | 2018-05-11 | 绍兴驰达汽车配件制造有限公司 | A kind of high-precision arm for automatically regulating clearance of brake |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170929 |
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| WD01 | Invention patent application deemed withdrawn after publication |