CN107366698A - A kind of wear indicator for being used to adjust arm and brake clearance adjustment arm - Google Patents
A kind of wear indicator for being used to adjust arm and brake clearance adjustment arm Download PDFInfo
- Publication number
- CN107366698A CN107366698A CN201710814205.7A CN201710814205A CN107366698A CN 107366698 A CN107366698 A CN 107366698A CN 201710814205 A CN201710814205 A CN 201710814205A CN 107366698 A CN107366698 A CN 107366698A
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- China
- Prior art keywords
- rotating disc
- mounting box
- hole
- annular groove
- spacing
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Classifications
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- 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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
- F16D66/025—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness sensing the position of parts of the brake system other than the braking members, e.g. limit switches mounted on master cylinders
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides a kind of wear indicator for being used to adjust arm and brake clearance adjustment arm, belong to field of mechanical technique.It solves the problems, such as that existing wear indicator is easily disturbed, can not ensure accurately to alarm.This wear indicator for being used to adjust arm includes on-off type switch, mounting box and rotating disc, on-off type switch is in mounting box, mounting box has spacing hole, rotating disc is located in spacing hole and rotating disc and spacing hole formation are radially spacing, spacing hole inwall is provided with annular groove, the outer of rotating disc is located in annular groove and rotating disc is spacing between the both sides cell wall of annular groove, annular groove portion or completely through and rotating disc can be rotated relative to mounting box, rotating disc through annular groove part be provided with can trigger on-off type switch protuberance.This wear indicator for being used to adjust arm and brake clearance adjustment arm have the advantages that operating accuracy is high, are not easy to be disturbed.
Description
Technical field
The invention belongs to field of mechanical technique, is related to a kind of wear indicator for being used to adjust arm and brake clearance adjustment
Arm.
Background technology
The normal brake application of automobile is by being in contact simultaneously between the brake drum in drum brake and brake-shoe friction facing
Realized using friction, vehicle brake gap refers to the gap that must be kept between brake drum and brake-shoe friction facing, in length
Friction facing can be worn and cause brake clearance increasing in the friction of time, it is therefore necessary to one is set in arrestment mechanism
The adjustment arm of brake clearance that can be between adjust automatically brake-shoe and brake drum, as Chinese patent was once disclosed a kind of band brake lining
Vehicle brake gap automatic regulator [the application number of pad wear warning device：03227352.5], it includes being arranged on automobile S-shaped
The camshaft of brake axle, housing is arranged with camshaft, worm gear is placed in the housing, and is placed on the spline on camshaft,
The both ends of the worm gear are provided with ring, wherein being fixed with shift fork on a ring, driving lever is fixed with another ring, and the driving lever can be with consolidating
The microswitch being scheduled on housing touches, microswitch connection alarm；In housing, a small axle is additionally provided with, it is solid on the small axle
Surely there is the worm screw of worm wheel, sheave is additionally provided with small axle, the end face of sheave can be meshed with clutch cover, ring and sheave
On open up fluted, connecting rod two end is in its groove.
When adjusting brake clearance, worm screw can drive worm gear wheel, and worm gear can drive S types cam axle so as to system
Dynamic gap compensates and adjusted.But when friction facing wears up to the limit, the angle that S type camshafts turn over has reached maximum
Value and brake clearance can not be adjusted, now just need the friction facing more renewed.For this case, above-mentioned automobile system
Dynamic clearance automatic-adjusting device is also provided with the brake pad wear warning device being made up of driving lever and microswitch, its abrasion report
Alert principle is such：When gap adjusts, worm gear can rotate, ring and the driving lever that is fixed on ring with worm gear wheel,
When worm gear wheel is to certain angle, brake pad wear to the limit, at this moment, driving lever can oppress microswitch and be allowed to connect peace
Mounted in the brake lining alarm of driver's cabin to remind driver to change brake lining in time.
Although above-mentioned vehicle brake gap automatic regulator can made by the setting of brake pad wear warning device
Dynamic gasket wear is extremely alarmed in time in limited time, but it there is also in place of some shortcomings：After being attached on automobile, adjustment
The housing of device is connected with brake chamber, and shift fork is fixed on automotive axle and remained stationary as, and brake chamber and automobile
Space between axle positioning is more narrow and small, for realizing that the driving lever of brake pad wear alarm is integrally fixed at one of them group again
On ring and directly it is exposed outside, microswitch be fixed on housing and directly it is exposed outside, so one side can make entirely to brake
The distribution of liner warning device is more scattered, cooperates requirement higher；On the other hand due to automobile brake chamber and vehicle bridge
Between generally can all be provided between many mechanisms and each mechanism that position is more close, then driving lever is directly naked with microswitch
Exposing outside to be present by the risk of other mechanical interferences, so as to lead to not accurately be alarmed, along with microswitch
Triggering mode is again fairly simple, once the part imprudence for having other mechanisms touches microswitch and can also sent by alarm
Alarm, now user the situation of the limit will not be also may wear in brake lining just brake lining is changed, this can increase
The financial burden of user.
The content of the invention
The purpose of the present invention is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of abrasion for being used to adjust arm refers to
Show device and brake clearance adjustment arm, technical problem to be solved is how to ensure the operating accuracy of wear indicator.
The purpose of the present invention can be realized by following technical proposal：
A kind of wear indicator for being used to adjust arm, including switched for the on-off type of control, it is characterised in that abrasion refers to
Show that device also includes the mounting box that can be connected to adjustment arm side wall and the rotating disc that can be connected with adjustment arm and be controlled by adjustment arm, lead to
Disconnected formula switch is in mounting box, and mounting box has spacing hole, and rotating disc is located in spacing hole and rotating disc is formed with spacing hole
Radially spacing, described spacing hole inwall is provided with annular groove, the outer of rotating disc be located in annular groove and rotating disc it is spacing
Between the both sides cell wall of annular groove, annular groove portion or completely through and rotating disc can be rotated relative to mounting box, rotate
Disk through annular groove part be provided with can trigger on-off type switch protuberance.
This wear indicator is mainly used on the arm for automatically regulating clearance of brake of drum brake, for drum brake
The lining pad of device is alarmed when may wear to limiting value.Rotating disc is designed most according to the limiting wear value of lining pad
Big rotational angle, and the initial relative position that the protuberance on rotating disc switchs with on-off type is designed according to the angle, rubbing
During wiping pad slowly wears, protuberance is set slowly to be switched close to on-off type by turn disc, and ensure friction lining
Protuberance when block may wear to limiting value on rotating disc just turns over maximum angle and triggers on-off type switch, to realize friction lining
The limit of wear alarm of block.
This wear indicator replaces the rotating disc with protuberance driving lever of the prior art, and on-off type is switched and set
Into mounting box, rotating disc is arranged on spacing hole and the outer of rotating disc is located in the annular groove on the hole wall of spacing hole, due to
Rotating disc can rotate relative to mounting box, therefore need to only be arranged to annular groove partly or completely run through, in rotating disc
Through annular groove part on set protuberance to make to possess on rotating disc and can trigger the part of on-off type switch, and turning
Moving plate is switched after turning over the angle corresponding with the limiting wear value of lining pad by protuberance triggering on-off type.Due to rotating disc
With in spacing hole between formed radially it is spacing, then rotating disc will not produce the play of radial direction in rotation process, simultaneously because
Rotating disc is limited between the both sides cell wall of annular groove, therefore rotating disc will not also produce axial alter in rotation process
It is dynamic, it is combined by radially spacing with axial limiting so that rotating disc can be stably positioned in peace while can rotate
In mounted box, the rotational stability of rotating disc is ensure that, protuberance is opened with on-off type during improving turn disc well
The fit precision of pass；It is supported in addition, being also due to rotating disc by spacing hole and annular groove, and the groove width of annular groove is general
All than relatively limited, in addition to similar to disk-like structure as rotating disc, it also is difficult to even if other parts are stretched into spacing hole
Penetrate again in annular groove, and other parts are even more that can not wear again substantially in the case of having already passed through annular groove in the outer of rotating disc
Enter in annular groove, so as to prevent the possibility that on-off type switch is triggered by miscellaneous part, ensure that wear indicator well
Operating accuracy.
Above-mentioned for having supporting part in a ring, institute in adjusting the wear indicator of arm, on described rotating disc
The support zone stated is in spacing hole and the lateral wall of supporting part and the hole wall of spacing hole lean.
Supporting part in a ring is set on rotating disc, when rotating disc is located in spacing hole by the lateral wall of supporting part with
The hole wall of spacing hole leans.By such setting, rotating disc is on the one hand enabled relative to mounting box freely turn
Move to be engaged with on-off type switch, on the other hand again rotating disc can be made radial-play do not occur relative to mounting box and make
The fitment stability of itself and on-off type switch is affected, and this also ensure that the alarm essence of this wear indicator to a certain extent
Degree.
It is used to adjust the wear indicator of arm above-mentioned, described rotating disc also includes disk body and flange, support
Portion is located at the outside of supporting part located at the side of disk body and flange, and described flange is spacing in annular groove, in described disk body
The non-circular and connecting hole for connecting is provided with the heart, the Single port of described spacing hole is located at the side of mounting box.
In specific assembling, for the disk body of rotating disc with support zone in spacing hole, the flange of rotating disc is located at annular groove
It is interior, rotating disc leant by the lateral wall of supporting part and the hole wall of spacing hole formed radially it is spacing, while rotating disc further through
The two side of annular groove forms axial limiting, so that rotating disc can be rotated stably to improve protuberance and break-make
The fit precision of formula switch.
In addition, connecting hole is set at the center of disk body, so, it is only necessary to by the peace residing for the Single port of spacing hole
On the side of mounted box is connected with the side wall of adjustment arm, and rotating disc is set to be connected to by spacing hole and connecting hole set on adjustment arm
On the Axle Parts (such as camshaft) that can be rotated when there is brake clearance generation, and due to connecting hole be it is non-circular, that
Connecting hole need to be only connected on the non-circular structure of Axle Parts, it is possible to drive rotating disc same when Axle Parts rotate
Step rotates, and triggers on-off type switch after turning over the set angle corresponding with lining pad limiting wear value in protuberance.And
Because on-off type switch and rotating disc are each attached in mounting box, this also means that rotating disc is being connected to tune with on-off type switch
It is that first entirety is assembled in mounting box when on whole arm, as long as then making the axle on adjustment arm when mounting box is connected on adjustment arm
In base part insertion spacing hole and ensure that rotating disc is socketed on Axle Parts and formed circumferentially fixed, eliminate to axle class portion
The step of part and rotating disc are fixed, only need to be by mounting box from tune hence in so that this wear indicator can carry out integral disassembly, assembly
Pulled down on whole arm and mean that whole wear indicator all disassembles from adjustment arm, improve this wear indicator well
Applicability is wider and dismounting convenience.
Above-mentioned in adjusting the wear indicator of arm, described mounting box to include box body and is connected with box body
Inner cap, the described inner cap side relative with box body be provided with collar flange one, and the described box body side relative with inner cap is set
Have a collar flange two, the inwall of described collar flange one and collar flange two be the hole wall of spacing hole and collar flange one with
Above-mentioned annular groove is formed between collar flange two, collar flange one is resisted against on the side of rotating disc, and collar flange two is resisted against
On the opposite side of rotating disc.
Cover inside and collar flange one is set, collar flange two is set on box body, when inner cap and box body are connected to become installation
During box, the endoporus of collar flange one and collar flange two just forms a part for spacing hole, while is supported by collar flange one
Lean against on the side of rotating disc, collar flange two is resisted against the opposite side of rotating disc, equivalent to being exactly rotating disc is clipped in ring-type
Between flange one and collar flange two, so as to play a part of preventing the axial limiting of rotating disc axial float, as rotating disc,
The fitment stability of rotating disc and on-off type switch is which thereby enhanced, ensure that the operating accuracy of wear indicator.
It is used to adjust the wear indicator of arm above-mentioned, described on-off type switch is push button microswitch, institute
The protuberance stated includes the linkage section for coordinating section and section being coordinated to be connected with flange lateral wall, and linkage section is convex from flange lateral wall
Go out and to flange side bend, coordinate section both sides stretch out linkage section both sides outside and bending inwards makes cooperation section be in evagination
Shape.
On-off type switch uses the trigger unit that push button microswitch means that on-off type switchs as trigger button, but by
In protuberance it is not that front pushes trigger button, but from contacts side surfaces and is oppressed during turn disc,
Trigger button has certain altitude again, therefore in order that trigger button can be depressed smoothly, it is necessary to make in processing
The both sides of section are coordinated to stretch out outside the both sides of linkage section and bend inwards so as to coordinate section to be in outer gibbosity, so can passes through
The part to be bent inwards in section is coordinated first to be in contact with trigger button, so that trigger button energy during turn disc
It is enough smoothly to be pressed, to ensure the fit precision of rotating disc and on-off type switch.
Above-mentioned in adjusting the wear indicator of arm, described connecting hole to be splined hole, described mounting box
Side is provided with arc adjustment hole.
Connecting hole is arranged to splined hole, rotating disc is realized axle class well by spline fitted with Axle Parts
The synchronous axial system of part and rotating disc, especially so that rotating disc is connected on camshaft as an example, due to originally having band on camshaft
The part of external splines, then only need to elongate external splines in machining cam axle, this is simplest for processing.
And in assembling it is possible that the spline endoporus of the spline tooth and rotating disc on the outside of camshaft can not complete face
And situation about can not assemble, using arc adjustment hole is set on mounting box mounting box can be made micro- relative to camshaft progress
Adjust, so that assembling becomes simple, and when mounting box swings the fine setting for carrying out angle, protuberance and on-off type on rotating disc
The relative position of switch is relatively fixed motionless, therefore the cooperation that will not be also switched to protuberance with on-off type impacts.
Brake clearance adjusts what in arm, including housing and one end insertion housing and can be rotated when brake clearance produces
Camshaft, wear indicator include being used for the on-off type switch for controlling display, it is characterised in that wear indicator also includes rotating
Disk and mounting box, mounting box are connected to the side of housing, and described on-off type switch is arranged in mounting box, and mounting box has
Spacing hole, rotating disc is located in spacing hole and rotating disc and spacing hole formation are radially spacing, and described spacing hole inwall is provided with
Annular groove, the outer of rotating disc is located in annular groove and rotating disc is spacing between the both sides cell wall of annular groove, and annular groove is portion
Point or it is complete run through and rotating disc can rotate relative to mounting box, described camshaft is stretched into spacing hole, rotating disc
Be socketed on camshaft and circumferentially fixed with camshaft, rotating disc through annular groove part be provided with can trigger on-off type
The protuberance of switch.
Camshaft when automatic adjusting arm carries out the adjustment of brake clearance in housing can turn over certain angle, and due to turning
Moving plate is socketed on camshaft and circumferentially fixed with camshaft, therefore after camshaft turns over certain angle, it is convex on rotating disc
Go out portion to also correspond to turn over identical angle.The maximum angle that can be turned over around this principle with camshaft computed in advance
Value, and the relative position between the protuberance and on-off type switch during according to the maximal angle value to set original state on rotating disc
Put, to ensure that the protuberance when camshaft turns over set angle on rotating disc can just trigger on-off type switch.
By replacing driving lever of the prior art with the rotating disc with protuberance in wear indicator, on-off type is opened
Close and set in mounting box, the outer that rotating disc is arranged on spacing hole and rotating disc is located at annular groove on the hole wall of spacing hole
It is interior, because rotating disc can rotate relative to mounting box, therefore annular groove need to be only arranged to partly or completely run through,
Rotating disc through annular groove part on set protuberance to make to possess on rotating disc and can trigger the part of on-off type switch,
And switched after the angle corresponding with the limiting wear value of lining pad is turned in rotating disc by protuberance triggering on-off type.Due to
Formed between in rotating disc and spacing hole radially spacing, then rotating disc will not produce the play of radial direction in rotation process, together
When the both sides cell wall of annular groove is limited in due to rotating disc between, therefore rotating disc will not also produce axial direction in rotation process
Play, by radially spacing being combined with axial limiting so that rotating disc can be positioned stably while can rotate
On mounting box, the rotational stability of rotating disc is ensure that, improves protuberance and break-make during turn disc well
The fit precision of formula switch；It is supported in addition, being also due to rotating disc by spacing hole and annular groove, and the groove width of annular groove
Typically all than relatively limited, in addition to similar to disk-like structure as rotating disc, other parts are even if stretching into spacing hole
It is difficult to penetrate again in annular groove, and other parts are even more substantially can not in the case of having already passed through annular groove in the outer of rotating disc
Annular groove is penetrated again, so as to prevent the possibility that on-off type switch is triggered by miscellaneous part, ensure that wear indicator well
Operating accuracy.
In above-mentioned brake clearance adjustment arm, being provided with described housing can be relative to the worm gear of housing into rotation, institute
In the camshaft insertion worm gear stated and worm gear is matched somebody with somebody by spline fitted, described camshaft with camshaft with rotating disc by spline
Close.
All it is to be driven to rotate by spline by worm gear in existing adjustment arm convexity wheel shaft, therefore by camshaft with rotating
Disk for processing is simplest also by spline fitted, it is only necessary to elongates flower key length on machining cam axle and is
Can, and the mode of spline fitted is also a kind of fit system that can realize rotating disc and camshaft synchronous axial system well,
It can ensure that the protuberance after camshaft turns over maximum angle on rotating disc just turns over equal angular and opened to trigger on-off type
Close.
And camshaft can also reduce certain cooperation requirement by spline fitted with worm gear, in rotating disc and on-off type
After switch is both positioned in mounting box, as long as by the external spline teeth face can on the inner spline gear and camshaft on rotating disc
Mounting box is integrally connected on camshaft, it is last mounting box and housing only to be linked together.
In above-mentioned brake clearance adjustment arm, described mounting box is provided with arc adjustment hole, the regulation of described arc
Bearing pin is provided with hole, one end of described bearing pin is penetrated in housing.
Arc adjustment hole is set on mounting box, so can carry out the fine setting of angle by swinging mounting box to meet
Assembling.The purpose so done to mounting box primarily to can be finely adjusted, especially for using rotating disc and camshaft
For this scheme of spline fitted, due to rotating disc when mounted be first be clamped in mounting box box body and inner cap it
Between, then be that one end of camshaft is disposed through the worm gear of housing and inserted in mounting box with rotating disc by spline fitted, that
In assembling it is possible that the spline endoporus of spline tooth and rotating disc on the outside of camshaft can not completely face and can not fill
Situation about matching somebody with somebody, being finely adjusted using such structure just can make assembling become simple, and is swung in mounting box and carry out angle
Fine setting when, the position of protuberance and on-off type switch on rotating disc be relatively fixed it is motionless, therefore also will not be to protrusion
The cooperation that portion switchs with on-off type impacts.
In above-mentioned brake clearance adjustment arm, described bearing pin includes head, thread segment and light bar segment successively, described
Head be resisted against the mounting box side opposite with housing, the described mounting box side relative with housing is provided with locking nut,
Described thread segment is threadedly coupled through arc adjustment hole and with locking nut, and described housing is provided with positioning hole, described
In light bar segment insertion positioning hole, described camshaft is provided with circlip for shaft, and described circlip for shaft, which is resisted against, to be turned
On Moving plate.
For in theory, full thread is directly processed on bearing pin, it is most convenient that mounting box and housing, which are connected through a screw thread,
, but screwed bearing pin because threaded connection is typically necessary to ensure that screw thread will not give away, and because mounting box needs
The reason for can swinging, causes mounting box to be fixed together again by other fasteners with housing, so allows for mounting box
Just there was only a tie point with housing, then be easy to occur what mounting box was upturned using bearing pin as fulcrum in braking procedure
Situation, and cause mounting box deformation in addition tear, and may also be stuck between rotating disc and camshaft and have influence on brake clearance
Adjustment.
Therefore this brake clearance adjusts arm by the way that bearing pin is arranged into head, thread segment and light bar segment, and head is resisted against
The mounting box side opposite with housing, thread segment are threadedly coupled through arc adjustment hole and with locking nut, pressed from both sides by mounting box
Between head and locking nut bearing pin will not be deviate from from arc adjustment hole, while the light bar segment insertion housing on bearing pin
On positioning hole in, light bar segment only plays supporting role of the mounting box when swinging, and now mounting box and housing do not form solid
It is fixed, the problem of disengagement there is mounting box and housing.Then, by setting circlip for shaft on camshaft, used using axle
Circlip is acted on rotating disk, is blocked rotating disk so as to solve the problems, such as that housing disengages with mounting box.In this way,
On the one hand solve mounting box when not swinging and housing fixation problem, on the other hand again mounting box can be prevented to be torn.
Compared with prior art, the present invention replaces driving lever of the prior art by the rotating disc with protuberance, will be logical
Disconnected formula switch is set into mounting box, and is set on mounting box and set annular groove on spacing hole and the hole wall of spacing hole, is rotated
Disk is located in spacing hole and is formed radially spacing, and the outer of rotating disc be located in annular groove and forms axial limiting, so that turn
Moving plate can be stably positioned on mounting box by spacing hole and annular groove and stably be rotated, and ensure that mill well
Damage the alarm accuracy of indicator；Meanwhile the setting of annular groove has prevented the possibility that on-off type switch is triggered by miscellaneous part, very well
Ground ensure that the alarm accuracy of wear indicator.
Brief description of the drawings
Fig. 1 is the schematic diagram of the brake clearance adjustment arm in embodiment one.
Fig. 2 is Fig. 1 exploded view.
The schematic diagram that Fig. 3 is that wear indicator in embodiment one is not connected when having an electric connection line.
Fig. 4 is the wear indicator original state schematic internal view in embodiment one.
Fig. 5 is the partial sectional view in A-A directions in Fig. 4.
Fig. 6 is sectional view when rotating disc is not provided with Fig. 5.
Fig. 7 is the sectional view in B-B directions in Fig. 4.
Fig. 8 is schematic internal view of the wear indicator in alarm point in embodiment one.
Fig. 9 is enlarged drawing when protuberance is in contact with on-off type switch in Fig. 8.
Figure 10 is the schematic diagram of the rotating disc in the wear indicator in embodiment one.
In figure, 1, housing；1a, positioning hole；2nd, camshaft；3rd, worm gear；4th, on-off type switchs；4a, trigger unit；4b, installation
Post；5th, rotating disc；5a, disk body；5a1, connecting hole；5b, supporting part；5c, flange；5d, protuberance；5d1, linkage section；5d2, match somebody with somebody
Close section；6th, mounting box；6a, inner cap；6a1, collar flange one；6a2, support column；6b, box body；6b1, mounting hole；6b2, ring-type are convex
Edge two；6c, movable chamber；6d, spacing hole；6e, annular groove；6f, wire hole；6g, arc adjustment hole；7th, bearing pin；7a, head；7b、
Thread segment；7c, light bar segment；8th, electric connection line；9th, locking nut.
Embodiment
It is the specific embodiment of the present invention and with reference to accompanying drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
As depicted in figs. 1 and 2, a kind of brake clearance adjustment arm, including housing 1, worm gear 3 and camshaft 2, worm gear 3 are set
It is placed in housing 1 and can be rotated relative to housing 1, in one end insertion housing 1 of camshaft 2, worm gear 3 is socketed in camshaft 2
It is upper and with camshaft 2 by spline fitted, the concrete structure of automatic braking-gap regulation arm can refer to applicant it is proposed that crossing
A kind of arm for adjusting automobile brake clearance automatically of Application No. 201611140721.8.
Wear indicator includes rotating disc 5, on-off type switch 4 and mounting box 6, mounting box 6 and is connected to the one of housing 1
Side, on-off type switch 4 are fixed in mounting box 6, and mounting box 6 has spacing hole 6d, and spacing hole 6d inwall is provided with annular groove
6e, rotating disc 5 are located in spacing hole 6d, and the side wall of rotating disc 5 and spacing hole 6d hole wall lean and formed radially spacing, turn
The outer of Moving plate 5 is located in annular groove 6e, and annular groove 6e both sides cell wall is born against in the both sides of rotating disc 5, annular groove
6e partly or completely runs through and rotating disc 5 can rotate relative to mounting box 6, rotating disc 5 through annular groove 6e portion
The protuberance 5d of on-off type switch 4 can be triggered by being arranged with.
In the present embodiment, it is identical with the brake pad wear warning device mentioned in background technology, this wear indicator
Also include an alarm, when on-off type switch 4 is triggered, alarm can send alarm to prompt driver to change friction in time
Piece.As shown in figure 3, the sidepiece of mounting box 6 offers wire hole 6f, alarm can be arranged in driver's cabin, and alarm is with leading to
Disconnected formula switch 4 is formed by electric connection line 8 to be electrically connected, and the electric connection line 8 for connecting can be drawn out to by wire hole 6f
Outside mounting box 6.
As shown in Fig. 4, Fig. 5 and Fig. 8, spacing hole 6d two-port is respectively positioned at the opposite both sides of mounting box 6, rotating disc 5
Including disk body 5a, non-circular connecting hole 5a1 is provided with disk body 5a center, camshaft 2 is stretched into spacing hole 6d, rotating disc 5
It is socketed in by connecting hole 5a1 on camshaft 2, and because connecting hole 5a1 is non-circular, therefore rotating disc 5 and the shape of camshaft 2
Circumferentially fix, thus camshaft 2 is driven the synchronous axial system of rotating disc 5 when there is brake clearance generation.In the present embodiment,
Connecting hole 5a1 is splined hole, that is, rotating disc 5 and camshaft 2 is represented indeed through spline fitted, due in existing tune
Whole arm convexity wheel shaft 2 and worm gear 3 are all coordinated by spline, therefore camshaft 2 and rotating disc 5 are matched somebody with somebody also by spline
It is simplest to close for machining cam axle 2, it is only necessary to elongates the spline on existing camshaft 2.
As shown in Figure 4 and Figure 8, the design principle of the wear indicator in the present embodiment is such：In automatic adjusting arm
Worm gear 3 when carrying out the adjustment of brake clearance in housing 1 can rotate, and worm gear 3 can drive the cam being engaged with worm gear 3 after rotating
Axle 2 turns over certain angle, and because rotating disc 5 is connected to the outside of camshaft 2, therefore after camshaft 2 turns over certain angle,
Protuberance 5d on rotating disc 5 also corresponds to turn over identical angle.Around this principle can be with camshaft 2 computed in advance
The maximal angle value turned over, and protuberance 5d and break-make during according to the maximal angle value to set original state on rotating disc 5
Relative position between formula switch 4, to ensure that trigger member just triggers on-off type switch 4 when camshaft 2 goes to maximum angle.
As shown in Figure 1, Figure 2 and Figure 3, because rotating disc 5 and camshaft 2 are by spline fitted, in order to avoid mounting box 6 connects
After being connected on housing 1, camshaft 2 is inserted into the external spline teeth of camshaft 2 and the connecting hole 5a1 on rotating disc 5 when in mounting box 6
Can not completely face and there is situation about can not assemble, it is therefore desirable on mounting box 6 set arc adjustment hole 6g, by mounting box
6 with housing 1 by being supported through arc adjustment hole 6g and the bearing pin 7 that penetrates in housing 1.Bearing pin 7 successively include head 7a,
Thread segment 7b and light bar segment 7c, head 7a are resisted against the side opposite with housing 1 of mounting box 6, and mounting box 6 is relative with housing 1
Side be provided with locking nut 9, thread segment 7b is threadedly coupled through arc adjustment hole 6g and with locking nut 9, and housing 1 is provided with
In positioning hole 1a, light bar segment 7c insertion positioning hole 1a, camshaft 2 is provided with circlip for shaft, and circlip for shaft is resisted against
On rotating disc 5.
By the way that bearing pin 7 is arranged into head 7a, thread segment 7b and light bar segment 7c, head 7a is resisted against mounting box 6 and shell
The opposite side of body 1, thread segment 7b are threadedly coupled through arc adjustment hole 6g and with locking nut 9, and head is clipped in by mounting box 6
Between portion 7a and locking nut 9 bearing pin 7 will not be deviate from from arc adjustment hole 6g, while the light bar segment 7c on bearing pin 7 is inserted
Enter in the positioning hole 1a on housing 1, light bar segment 7c only plays supporting role of the mounting box 6 when swinging, now mounting box 6 and shell
Body 1 does not form fixation, the problem of disengagement there is mounting box 6 and housing 1.Then, by setting axle bullet on camshaft 2
Property back-up ring, is acted on rotating disk 5 using circlip for shaft, is blocked rotating disk 5 and is disengaged so as to solve housing 1 with mounting box 6
The problem of.In this way, on the one hand solve fixation problem of the mounting box 6 when not swinging with housing 1, on the other hand again
Mounting box 6 can be prevented to be torn.
As shown in Figure 5 and Figure 6, movable chamber 6c is provided with mounting box 6, on-off type switch 4 is fixed in movable chamber 6c, annular
Movable chamber 6c is connected by groove 6e with spacing hole 6d, and protuberance 5d is located in movable chamber 6c, and on-off type switch 4 is provided with trigger unit
4a.Mounting box 6 includes inner cap 6a and box body 6b, and inner cap 6a and box body 6b is by being welded and fixed.Inner cap 6a is located at housing 1 and box
Between body 6b, spacing hole 6d one of port is located on inner cap 6a, between inner cap 6a and box body 6b formed movable chamber 6c and
Spacing hole 6d, on-off type switch 4 are fixed in movable chamber 6c, and mounting hole is offered on side relative with inner cap 6a box body 6b
6b1, on-off type switch the mounting post 4b on 4 sides relative with box body 6b with protrusion, mounting post 4b insertion mounting holes 6b1
Interior, side relative with box body 6b inner cap 6a is provided with the support column 6a2 of protrusion, and support column 6a2 withstands on on-off type switch 4 and inner cap
On side relative 6a.
As shown in Fig. 5 and Figure 10, rotating disc 5 is also included from disk body 5a outer to the supporting part that disk body 5a side is raised
The 5b and flange 5c for protruding from supporting part 5b lateral walls, side relative with box body 6b inner cap 6a have the 6a1 of collar flange one,
Side relative with inner cap 6a box body 6b has collar flange two 6b2, the 6a1 of collar flange one and the 6b2 of collar flange two inwall
It is that annular groove 6e is formed between spacing hole 6d hole wall and the 6a1 of collar flange one and the 6b2 of collar flange two.Supporting part 5b's is outer
Side wall and the 6b2 of collar flange one madial wall lean, and are made by the cooperation of the 6b2 of collar flange one madial wall and supporting part 5b
Spacing hole 6d forms radially spacing to rotating disc 5.Flange 5c is located in annular groove 6e, and protuberance 5d is arranged at the outer of flange 5c
Side, the 6a1 of collar flange one are resisted against flange 5c side, and the 6b2 of collar flange two is resisted against flange 5c opposite side, such flange
5c is just sandwiched between the 6a1 of collar flange one and the 6b2 of collar flange two, it is achieved thereby that the axial limiting to rotating disc 5.At this
In embodiment, rotating disc 5 is integral type structure and uses punch forming, and such disk body 5a, supporting part 5b and flange 5c are also convex
Going out portion 5d can be with synchronous axial system；The 6a1 of collar flange one and inner cap 6a is integral type structure, and the 6b2 of collar flange two is with box body 6b
Integral structure, the 6a1 of collar flange one internal diameter is more than the 6b2 of collar flange two internal diameter, due to the 6a1 of collar flange one and ring-type
The 6b2 of flange two is born against in flange 5c both sides, and the 6a1 of collar flange one internal diameter so is set greater than into collar flange two
6b2 internal diameter, the contact area of rotating disc 5 and annular groove 6e both sides cell wall can be made bigger, rotated more stable.
In assembling, the disk body 5a and supporting part 5b of rotating disc 5 are located in spacing hole 6d, and the flange 5c of rotating disc 5 is resisted against
On the inner cap 6a 6a1 of collar flange one, box body 6b is then connected on inner cap 6a, the flange 5c of rotating disc 5 will be sandwiched in box
Between body the 6b 6b2 of collar flange two and inner cap the 6a 6a1 of collar flange one, while the supporting part 5b of rotating disc 5 lateral wall
It will be leant with spacing hole 6d hole wall.By such setting, on the one hand enable rotating disc 5 relative to mounting box 6
Progress is freely rotated to be engaged with on-off type switch 4, on the other hand again rotating disc 5 can be made not go out relative to mounting box 6
Show radial-play and the fitment stability of itself and on-off type switch 4 is affected.
As shown in figure 9, on-off type switch 4 is provided with trigger unit 4a, on-off type switch 4 is push button microswitch, triggering
Portion 4a is the trigger button on push button microswitch, and protuberance 5d protrudes from flange 5c lateral wall and protuberance 5d and flange
5c is integral type structure, has the section of evagination, side bendings of the protuberance 5d from section to flange 5c on flange 5c lateral walls
Form.Protuberance 5d includes the linkage section 5d1 for coordinating section 5d2 and section 5d2 being coordinated to be connected with flange 5c lateral walls, connection
Section 5d1 protrudes from flange 5c lateral walls and bent to flange 5c side, coordinates section 5d2 both sides to stretch out the two of linkage section 5d1
Outside side and bending inwards makes cooperation section 5d2 be in outer gibbosity.On-off type switch 4, can be with except using in addition to push button microswitch
Using spring plate microswitch or proximity switch etc., when proximity switch is as on-off type switch 4, trigger unit 4a is exactly close
Inductive head on switch, as long as it can meet that protuberance 5d can be mechanically or with induction of signal after turning over set angle
Mode triggers on-off type switch 4.
On-off type switch 4 means that the trigger button of push button microswitch is as logical using push button microswitch
What the trigger unit 4a of disconnected formula switch 4 was used, but because protuberance 5d is not that front pushes trigger button, but in rotating disc 5
From contacts side surfaces and oppressed in rotation process, trigger button has certain altitude again, therefore in order that triggering is pressed
Button can be depressed smoothly, it is necessary to be made in processing outside cooperation section 5d2 both sides stretching linkage section 5d1 both sides and inwardly curved
Roll over so as to coordinate section 5d2 be in outer gibbosity, part that so can is bent inwards by coordinating on section 5d2 first with trigger by
Button is in contact, so that trigger button can be pressed smoothly during rotating disc 5 rotates.
Wear indicator in the present embodiment by on-off type switch 4 by being fixed on what is formed between inner cap 6a and box body 6b
In movable chamber 6c, protuberance 5d is arranged on the outer of rotating disc 5, and the outer of rotating disc 5 be clipped in box body 6b and inner cap 6a it
Between and in the movable chamber 6c, then also mean that protuberance 5d also is located in movable chamber 6c, this mean that protuberance 5d with
The cooperation of on-off type switch 4 is entirely to be carried out in movable chamber 6c, so just eliminates the other structures meaning of regulating arm
The possibility of external trigger on-off type switch 4, simultaneously as rotating disc 5 is directly circumferentially fixed on camshaft 2 and by camshaft 2
Directly drive and rotate, for prior art is driven by frictional force, will not go out between rotating disc 5 and camshaft 2
Existing skidding, therefore the alarm accuracy of whole wear indicator is ensure that well.
It is and radially spacing due to being formed between in rotating disc 5 and spacing hole 6d, then rotating disc 5 in rotation process not
The play of radial direction can be produced, simultaneously because rotating disc 5 is limited between annular groove 6e both sides cell wall, therefore rotating disc 5 exists
Also axial play will not be produced in rotation process, by radially spacing being combined with axial limiting so that rotating disc 5 is can
It can be stably positioned on mounting box 6 while rotation, ensure that the rotational stability of rotating disc 5, improved turn well
Protuberance 5d and on-off type switch 4 fit precision in the rotation process of Moving plate 5；In addition, being also due to rotating disc 5 passes through spacing hole
6d is supported with annular groove 6e, and annular groove 6e groove width is general all than relatively limited, except similar to disk as rotating disc 5
Outside shape structure, it also is difficult to penetrate again in annular groove 6e even if other parts are stretched into spacing hole 6d, and in the outer of rotating disc 5
Other parts are even more that can not penetrate again in annular groove 6e substantially in the case of being arranged on annular groove 6e, so as to prevent break-make
The possibility that formula switch 4 is triggered by miscellaneous part, ensure that the operating accuracy of wear indicator well.
Meanwhile rotating disc 5 and on-off type switch 4 are all positioned on mounting box 6, then protuberance 5d on rotating disc 5 and
Whether the position of on-off type switch 4 can just be set before mounting box 6 is connected to housing 1, can be by during without considering further that cooperation
To the interference of adjustment arm other structures, cooperation is reduced well and is required, i.e. rotating disc 5 and on-off type switch 4 connects in mounting box 6
Just worked good when being connected on housing 1, then as long as making the insertion limit of camshaft 2 when mounting box 6 is connected on housing 1
Position hole 6d in and ensure rotating disc 5 be socketed in camshaft 2 formed it is circumferentially fixed.And it is also due to rotating disc 5 and break-make
The reason for formula switch 4 is all positioned in mounting box 6 so that the applicability of this wear indicator is wider, and integrated level is higher, can carry out
Integrated connection and dismounting, as long as mounting box 6 is connected on housing 1 or disassembled from housing 1.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (10)
1. a kind of wear indicator for being used to adjust arm, including switch (4) for the on-off type of control, it is characterised in that abrasion
Indicator also includes the mounting box (6) that can be connected to adjustment arm side wall and can be connected with adjustment arm and be rotated by adjustment arm control
Disk (5), on-off type switch (4) is in mounting box (6), and mounting box (6) has spacing hole (6d), and rotating disc (5) is positioned at spacing
In hole (6d) and rotating disc (5) and spacing hole (6d) formation are radially spacing, and described spacing hole (6d) inwall is provided with annular groove
(6e), the outer of rotating disc (5) be located in annular groove (6e) and the spacing both sides cell wall in annular groove (6e) of rotating disc (5) it
Between, annular groove (6e) partly or completely runs through and rotating disc (5) can rotate relative to mounting box (6), and rotating disc (5) is passing through
The part for the annular groove (6e) worn is provided with the protuberance (5d) that can trigger on-off type switch (4).
2. the wear indicator according to claim 1 for being used to adjust arm, it is characterised in that on described rotating disc (5)
With supporting part (5b) in a ring, described supporting part (5b) be located in spacing hole (6d) and the lateral wall of supporting part (5b) with
The hole wall of spacing hole (6d) leans.
3. the wear indicator according to claim 2 for being used to adjust arm, it is characterised in that described rotating disc (5) is also
Including disk body (5a) and flange (5c), supporting part (5b) is located at supporting part (5b) located at the side of disk body (5a) and flange (5c)
Outside, described flange (5c) is spacing in the annular groove (6e), is provided with non-circular at described disk body (5a) center and is used for
The connecting hole (5a1) of connection, the Single port of described spacing hole (6d) are located at the side of mounting box (6).
4. the wear indicator for being used to adjust arm according to claim 1 or 2 or 3, it is characterised in that described mounting box
(6) box body (6b) and the inner cap (6a) being connected with box body (6b) are included, described inner cap (6a) is relative with box body (6b)
Side is provided with collar flange one (6a1), and described box body (6b) is provided with collar flange two with the relative side of inner cap (6a)
The inwall of (6b2), described collar flange one (6a1) and collar flange two (6b2) is the hole wall and ring-type of spacing hole (6d)
Above-mentioned annular groove (6e) is formed between flange one (6a1) and collar flange two (6b2), collar flange one (6a1) is resisted against rotation
On the side of disk (5), collar flange two (6b2) is resisted against on the opposite side of rotating disc (5).
5. the wear indicator according to claim 2 for being used to adjust arm, it is characterised in that described on-off type switch
(4) it is push button microswitch, described protuberance (5d) is including coordinating section (5d2) and will coordinate section (5d2) and flange
The connected linkage section (5d1) of (5c) lateral wall, linkage section (5d1) protrude from flange (5c) lateral wall and to flange (5c) sides
Bending, the both sides of cooperation section (5d2) stretch out outside the both sides of linkage section (5d1) and bending inwards makes cooperation section (5d2) be in outer gibbosity.
6. the wear indicator according to claim 3 for being used to adjust arm, it is characterised in that described connecting hole (5a1)
For splined hole, the side of described mounting box (6) is provided with arc adjustment hole (6g).
7. it can be rotated in brake clearance adjustment arm, including housing and one end insertion housing and when brake clearance produces convex
Wheel shaft, wear indicator include being used for the on-off type switch (4) for controlling display, it is characterised in that wear indicator also includes turning
Moving plate (5) and mounting box (6), mounting box (6) are connected to the side of housing, and described on-off type switch (4) is arranged at installation
In box (6), mounting box (6) has spacing hole (6d), and rotating disc (5) is located in spacing hole (6d) and rotating disc (5) and spacing hole
(6d) formation is radially spacing, and described spacing hole (6d) inwall is provided with annular groove (6e), and the outer of rotating disc (5) is positioned at annular
In groove (6e) and rotating disc (5) is spacing between the both sides cell wall of annular groove (6e), and annular groove (6e) is partly or completely
Run through and rotating disc (5) can rotate relative to mounting box (6), described camshaft is stretched into spacing hole (6d), rotating disc (5)
Be socketed on camshaft and circumferentially fixed with camshaft, rotating disc (5) through annular groove (6e) part be provided with can touch
Send out the protuberance (5d) of on-off type switch (4).
8. brake clearance according to claim 7 adjusts arm, it is characterised in that being provided with described housing (1) being capable of phase
The worm gear (3) rotated for housing (1), described camshaft (2) insertion worm gear (3) is interior and worm gear (3) passes through with camshaft (2)
Spline fitted, described camshaft (2) pass through spline fitted with rotating disc (5).
9. brake clearance according to claim 8 adjusts arm, it is characterised in that described mounting box (6) is provided with arc
Adjustment hole (6g), described arc adjustment hole (6g) is interior to be provided with bearing pin (7), and one end of described bearing pin (7) penetrates housing (1)
It is interior.
10. brake clearance according to claim 9 adjusts arm, it is characterised in that described bearing pin (7) includes head successively
(7a), thread segment (7b) and light bar segment (7c), described head (7a) are resisted against one opposite with housing (1) of mounting box (6)
Side, described mounting box (6) are provided with locking nut (9) with the relative side of housing (1), and described thread segment (7b) passes through arc
Adjustment hole (6g) is simultaneously threadedly coupled with locking nut (9), and described housing (1) is provided with positioning hole (1a), described light bar segment
In (7c) insertion positioning hole (1a), described camshaft (2) is provided with circlip for shaft, described circlip for shaft against
On rotating disc (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710814205.7A CN107366698B (en) | 2017-09-11 | 2017-09-11 | Wear indicator for adjusting arm and brake clearance adjusting arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710814205.7A CN107366698B (en) | 2017-09-11 | 2017-09-11 | Wear indicator for adjusting arm and brake clearance adjusting arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107366698A true CN107366698A (en) | 2017-11-21 |
| CN107366698B CN107366698B (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710814205.7A Active CN107366698B (en) | 2017-09-11 | 2017-09-11 | Wear indicator for adjusting arm and brake clearance adjusting arm |
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| Country | Link |
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| CN (1) | CN107366698B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006116A (en) * | 2017-12-26 | 2018-05-08 | 隆中控股集团股份有限公司 | A kind of angular transducer for being used to adjust arm |
| CN109764073A (en) * | 2019-03-28 | 2019-05-17 | 山西峰润众盛汽车配件制造有限公司 | A kind of self-regulated arm increases the device of warning function |
| CN109798309A (en) * | 2019-03-28 | 2019-05-24 | 山西峰润众盛汽车配件制造有限公司 | A kind of warning device of arm for automatically regulating clearance of brake |
| CN109838486A (en) * | 2019-03-28 | 2019-06-04 | 山西峰润众盛汽车配件制造有限公司 | A kind of arm for automatically regulating clearance of brake alarmed |
| CN110159681A (en) * | 2019-04-25 | 2019-08-23 | 瑞安市纳德睿电子科技有限公司 | A kind of adjustment arm angle sensor with brake alarm device for vehicle |
| CN110469606A (en) * | 2019-07-16 | 2019-11-19 | 济南金麒麟刹车系统有限公司 | Drum-type heavy type pad wear monitoring sensor, alarm system and its wear monitoring method |
| CN113623344A (en) * | 2020-05-09 | 2021-11-09 | 威伯科印度有限公司 | Automatic slack adjuster for a vehicle, brake system and wheel set having an automatic slack adjuster |
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| CN109838486A (en) * | 2019-03-28 | 2019-06-04 | 山西峰润众盛汽车配件制造有限公司 | A kind of arm for automatically regulating clearance of brake alarmed |
| CN110159681A (en) * | 2019-04-25 | 2019-08-23 | 瑞安市纳德睿电子科技有限公司 | A kind of adjustment arm angle sensor with brake alarm device for vehicle |
| CN110469606A (en) * | 2019-07-16 | 2019-11-19 | 济南金麒麟刹车系统有限公司 | Drum-type heavy type pad wear monitoring sensor, alarm system and its wear monitoring method |
| CN110469606B (en) * | 2019-07-16 | 2021-06-29 | 济南金麒麟刹车系统有限公司 | Drum type heavy piece abrasion monitoring sensor, alarm system and abrasion monitoring method thereof |
| CN113623344A (en) * | 2020-05-09 | 2021-11-09 | 威伯科印度有限公司 | Automatic slack adjuster for a vehicle, brake system and wheel set having an automatic slack adjuster |
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Address after: 317600 ridge foot of Yucheng street in Yuhuan, Zhejiang Applicant after: LONGZHONG HOLDING GROUP CO.,LTD. Address before: 317600 Taizhou City, Zhejiang City, Yuhuan City North Industrial Area Applicant before: LONGZHONG HOLDING GROUP Co.,Ltd. |
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