CN205423631U - Clearance automatic adjustment arm is applied brake from mode automobile to helical gear worm - Google Patents
Clearance automatic adjustment arm is applied brake from mode automobile to helical gear worm Download PDFInfo
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- CN205423631U CN205423631U CN201620200765.4U CN201620200765U CN205423631U CN 205423631 U CN205423631 U CN 205423631U CN 201620200765 U CN201620200765 U CN 201620200765U CN 205423631 U CN205423631 U CN 205423631U
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- arm
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- worm screw
- helical gear
- worm
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Abstract
The utility model relates to a clearance automatic adjustment arm is applied brake from mode automobile to helical gear worm, should adjust the arm including the casing that has the arm handle, set up in the casing worm of suit on separation and reunion axle main part D, with worm mesh center -band have the spline shaft hole the worm wheel, from dynamic wheel group, front shroud assembly and back shroud, separation and reunion axle main part D includes the separation and reunion axle, the one end of the epaxial worm of separation and reunion is provided with the shotpin, the other end is provided with one way clutch, are the epaxial passive helical gear of separation and reunion and driven oblique gear engagement, its skewed tooth adoption angle scope from dynamic wheel group 35 45 the degree, driving gear and the meshing of the driven gear from the dynamic wheel group, the arm handle adopt straight handle structure or be " L " shape bending structures, have the connecting hole on it, the utility model discloses simple structure, transmission small friction, transmission precision height.
Description
Technical field
The utility model relates to a kind of gap automatic regulating arm of automobile brake, a kind of high accuracy bevel gear type arm for adjusting automobile brake clearance automatically.
Background technology
Arm for adjusting automobile brake clearance automatically is a kind of blank compensation apparatus being applicable to wheeled car brake, and its effect is the brake clearance of regulation automotive brake, makes gap keep relative stability, thus ensures the optimum braking force of brake.
The traditional vehicle brake gap of China is taked manually to regulate, it is impossible to automatically compensates the gap between brake drum and the shoe brake produced because of brake pad wear, thus can cause the generation of the phenomenon such as brake failure or sideslip.
At present, along with China's expanding economy and the progress of science and technology, the arm for adjusting automobile brake clearance automatically in China's a lot of versions commercially occurs.Arm for adjusting automobile brake clearance automatically is a critical piece in brake system of car, it is installed between brake chamber and camshaft, utilize the perception principle of transmission mechanism, the brake clearance increased shoe brake and brake drum because of abrasion at any time in vehicle runs is adjusted voluntarily, it is allowed in the range of required standard, and keep the gap between each wheel, overcoming the gap manually adjusting between brake drum and friction plate can not be timely, cause braking retardation, cause sideslip or malfunctioning, running brake is made to remain optimum efficiency, improve the security that vehicle travels.
Although the problem that above-mentioned arm for adjusting automobile brake clearance automatically solves some reality, but there is certain weak point, it is in particular in: 1., owing to there is friction between the worm shaft being arranged in shell inner hole and hole inwall, so the impact of its force of sliding friction adjusts the precision of arm transmission；2. the driven gear, in clutch assembly uses through ship structure, there is a component, causes the gear shaft generation vibration in clutch assembly, adjust arm and adjust dumb during work between driven gear and active oblique gear.3., the structure of product is complicated, volume big, exchange poor universality, install and use the most convenient and reliable.
Summary of the invention
The helical gear worm screw self-adjustable arm for adjusting automobile brake clearance automatically that the purpose of this utility model is to provide for a kind of simple in construction, gearing friction power is little, transmission accuracy is high.
The purpose of this utility model is realized in, this adjustment arm includes the housing with arm handle, the worm screw on clutch shaft main part D it is sleeved in being arranged on housing, with worm engaging center with the worm gear in splined shaft hole, driven wheels, front shroud assembly and back shroud, it is characterized in that: described clutch shaft main part D includes clutch shaft, on described clutch shaft, one end of worm screw is provided with shotpin, the other end is provided with one-way clutch, passive helical gear on described clutch shaft and the engagement of the driven helical gear on driven wheels, its helical teeth uses angular range to be 35-45 degree, driven gear engagement on described driving gear and driven wheels, described arm handle uses staight shank structure or bending structure in the form of an " L ", with connecting hole on it.
Center line B and side distance H adjusted between arm center line B' of described arm handle are 0-100mm；Described clutch shaft uses the flat structure of interference fit with worm screw, and described one-way clutch uses torsion spring formula structure.
The utility model has the advantage that owing to using said structure
1, the utility model directly drives worm screw due to clutch shaft, reduces by a gear drive when adjusting work, makes assembly work more smooth, in hgher efficiency；Clutch shaft one end is provided with shotpin, and clutch shaft coordinates employing limit flat interference fit at worm screw, prevents clutch shaft and worm screw relative displacement and rotation.
2, the utility model is owing to using helical teeth structure by the driven gear on clutch shaft assembly, and during work, driven gear offsets with the A Jin component of driven helical gear.Driven wheels will not occur vibration, adjusts arm and adjusts more odd jobs.
3, the utility model driving gear and driven gear can carry out gear ratio change according to user to the clearance requirement of shoe plate, and the driving gear number of teeth, from 58-62 tooth, adjusts between post gap scope 0.4-1.2mm.
4, the utility model guarantees the brake clearance that four-wheel is constant, because automatic clearance adjuster can be in vehicle operation, the gap increasing brake shoe plate abrasion adjusts the most automatically, so, no matter vehicle travels how many kilometers, brake clearance all can remain constant, until next time changes shoe plate, thus has stopped braking retardation, sideslip and the generation of brake failure phenomenon.
5, the utility model guarantees optimal braking moment, owing to shoe plate gap has obtained adjusting timely, so in the case of shoe plate serious wear, adjustment arm movement angle can be made too close proximity to right angle, it is ensured that brake chamber thrust will not decline.
6, compressed-air actuated consumption is reduced.Owing to clearance constant, the brake chamber of shoe plate can work in minimum stroke, therefore, compressed-air actuated consumption and chamber inflated time when can reduce braking every time, and reach to brake required maximum pressure within the shortest time, shorten braking response time and braking distance, the most also extend air pump and the service life of air chamber diaphragm.
7, the utility model reduces material consumption, extends the service life of brake part, after using invention product, can keep stablizing optimal braking effect.Therefore, in the access times and the time that reduce brake component, reduce the temperature of drum automatically, alleviate abrasion and heat fading, prevent brake drum from ellipse occurring, thus extend the service life of brake component, reduce the consumption of material, eliminate maintainer simultaneously and frequently adjust the work of brake clearance, reduce vehicle admission repair time and maintenance cost, improve vehicle and use serviceability rate, reduce cost of transportation.
8, product structure of the present invention is simple, volume is little, exchange versatility various vehicles good, easy to use and reliable to install, generally applicable.
Accompanying drawing explanation
Fig. 1 is high accuracy helical gear worm screw self-adjustable arm for adjusting automobile brake clearance automatically overall structure schematic diagram.
Fig. 2 is the utility model A-A face sectional view.
Fig. 3 is the utility model driven wheels structural representation.
Fig. 4 is the utility model clutch shaft construction schematic diagram.
Reference: housing 1, clutch shaft main part D, worm screw 2, worm gear 3, driven wheels 4, front shroud assembly 5, back shroud 6, clutch shaft 7 shotpin 8, driven gear 9, driven helical gear 10, passive helical gear 11, one-way clutch 12, driving gear 13, arm handle 14, connecting hole 15, flat structure 16.
Detailed description of the invention
Shown in accompanying drawing 1,2 and 3: this adjustment arm includes the housing 1 with arm handle 14, be arranged on housing 1 in the worm screw 2 that is sleeved on clutch shaft main part D engage center worm gear 3, driven wheels 4, front shroud assembly 5 and back shroud 6 with splined shaft hole with worm screw 2, described clutch shaft main part D includes clutch shaft 7, on described clutch shaft 7, one end of worm screw 2 is provided with shotpin 8, the other end is provided with one-way clutch 12, clutch shaft 7 and worm screw 2 use the flat structure 16 of interference fit, prevent clutch shaft 7 and worm screw 2 relative displacement and rotation；Described one-way clutch 12 uses torsion spring formula structure, it is achieved that Follow-up type adjusts without unit, controls gap more accurately, and described clutch shaft 7 directly drives worm screw 2, reduces by a gear drive when adjusting work, makes assembly work more smooth, in hgher efficiency；Passive helical gear 11 on clutch shaft 7 and the driven helical gear 10 on driven wheels 4 engage, its helical teeth uses angular range to be 35-45 degree, it is adaptable to various brake chamber power demand；Driven gear 9 on described driving gear 13 and driven wheels 4 engages, according to user, the clearance requirement of shoe plate can be carried out gear ratio change；Described arm handle 14 uses staight shank structure or bending structure in the form of an " L ", on it with connecting hole 15.
Center line B and side distance H adjusted between arm center line B' of described arm handle 14 are 0-100mm.
During use, being loaded on the camshaft of automotive brake by worm gear 3 of the present utility model, the air-leg connecting hole 15 of housing 1 arm handle 14 connects automobile brake chamber push rod.When automobile brake chamber push rod swings, housing 1 swings, the driving gear 13 in front shroud assembly 5 is driven to swing, the driven gear 9 on driven wheels 4 being meshed therewith swings simultaneously, and on driven wheels 4, driven helical gear 10 drives passive helical gear 11 to swing, and passive helical gear 11 drives clutch shaft 7 to swing by one-way clutch 12, worm screw 2 swings therewith, worm screw 2 drives worm gear 3 to swing, thus driving automobile automation camshaft swings, and completes gap and adjusts work.
Claims (3)
- null1. a helical gear worm screw self-adjustable arm for adjusting automobile brake clearance automatically，This adjustment arm includes the housing (1) with arm handle (14)、The worm screw (2) being sleeved in being arranged on housing (1) on clutch shaft main part D、The center worm gear (3) with splined shaft hole is engaged with worm screw (2)、Driven wheels (4)、Front shroud assembly (5) and back shroud (6)，It is characterized in that: described clutch shaft main part D includes clutch shaft (7)，One end of the upper worm screw (2) of described clutch shaft (7) is provided with shotpin (8)、The other end is provided with one-way clutch (12)，Passive helical gear (11) on described clutch shaft (7) and the engagement of the driven helical gear (10) on driven wheels (4)、Its helical teeth uses angular range to be 35-45 degree，Driven gear (9) engagement on described driving gear (13) and driven wheels (4)，Described arm handle (14) uses staight shank structure or bending structure in the form of an " L "、With connecting hole (15) on it.
- A kind of helical gear worm screw self-adjustable arm for adjusting automobile brake clearance automatically the most according to claim 1, it is characterised in that: center line B and side distance H adjusted between arm center line B' of described arm handle (14) they are 0-100mm.
- A kind of helical gear worm screw self-adjustable arm for adjusting automobile brake clearance automatically the most according to claim 1, it is characterized in that: described clutch shaft (7) uses the flat structure (16) of interference fit with worm screw (2), and described one-way clutch 12 uses torsion spring formula structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620200765.4U CN205423631U (en) | 2016-03-16 | 2016-03-16 | Clearance automatic adjustment arm is applied brake from mode automobile to helical gear worm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620200765.4U CN205423631U (en) | 2016-03-16 | 2016-03-16 | Clearance automatic adjustment arm is applied brake from mode automobile to helical gear worm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205423631U true CN205423631U (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620200765.4U Active CN205423631U (en) | 2016-03-16 | 2016-03-16 | Clearance automatic adjustment arm is applied brake from mode automobile to helical gear worm |
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| Country | Link |
|---|---|
| CN (1) | CN205423631U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838071A (en) * | 2016-03-16 | 2017-06-13 | 倪世荣 | Helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically |
-
2016
- 2016-03-16 CN CN201620200765.4U patent/CN205423631U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838071A (en) * | 2016-03-16 | 2017-06-13 | 倪世荣 | Helical teeth worm and gear self-adjustable arm for adjusting automobile brake clearance automatically |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |