CN109210112A - Automatic compensation device for free clearance of drum brake and rocker arm end compensation device - Google Patents
Automatic compensation device for free clearance of drum brake and rocker arm end compensation device Download PDFInfo
- Publication number
- CN109210112A CN109210112A CN201710879675.1A CN201710879675A CN109210112A CN 109210112 A CN109210112 A CN 109210112A CN 201710879675 A CN201710879675 A CN 201710879675A CN 109210112 A CN109210112 A CN 109210112A
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- brake
- rocker arm
- drum
- auxiliary section
- adjustment screw
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- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims description 27
- 230000009471 action Effects 0.000 claims description 12
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009987 spinning Methods 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
- F16D65/42—Slack adjusters mechanical non-automatic
Abstract
A drum brake free gap automatic compensation device for connecting a brake wire and a brake rocker arm assembly, the automatic compensation device comprises: the fixing seat, the shell, the connecting sliding seat and the rotating guide mechanism; the shell is pivoted on the fixed seat; the connecting sliding seat can freely move in the inner diameter cavity of the shell, one end surface of the connecting sliding seat is embedded with a one-way bearing, a screw rod is adjusted by embedding the one-way bearing, and the other end surface of the connecting sliding seat is provided with a connecting part connected with the brake lead; the rotation guide mechanism is used for respectively arranging the guide pins which are correspondingly nested and the guide groove comprising the straight groove and the inclined groove on the shell and the connecting sliding seat; when the tension of the brake wire reaches a preset value, the automatic compensation device rotates the connecting sliding seat by an angle to rotate the adjusting screw rod, so that the deflection angle of the brake rocker arm in the initial state is increased, and the expanded free gap of the drum brake is automatically compensated.
Description
Technical field
The present invention relates to the maintenance braking system of the free clearance of drum brakes, in particular to a kind of brake free clearance
Autocompensation installation and rocker arm end compensating device.
Background technique
Existing Drum brake has good very effect certainly, and under conditions of generating identical brake torque, Drum brake
Brake drum diameter can compared with Disk brake brake dish the small upper many of diameter, plus Drum brake with cost of parts it is low
Many advantages, such as honest and clean and easy to maintenance, so that Drum brake is widely used in automobile, locomotive, bicycle or other various vehicles
Braking system in.It is worth noting that, Drum brake is easy to cause its Brake shoe to wear away as brake number increases,
So that the spacing of Brake shoe and brake drum expands, cause then longer to drive the brake wire of Brake shoe that must be pulled
Distance can just make Brake shoe contact friction brake drum, and in other words, user pulls brake pull rod or tramples the row of brake pedal
Cheng Bixu extends, and can obtain identical brake power before not wearing away with Brake shoe.
No. 549283 Patent Case of TaiWan, China patent announcement discloses a kind of existing Drum brake device 1, please refers to Figure 1A
Shown, which includes a brake handgrip 11, one brake unit 12 and a brake wire 13, the brake wire 13 difference
Connect the brake handgrip 11 and a screw rod 131.Wherein, which includes a swing arm 121, which is articulated in this
It screw rod 131 and is positioned by a nut 122, which is screwed together in the screw rod 131.Whereby, when user pulls the brake
When handle 11, the brake wire 13 being connected with the brake handgrip 11 will be driven together, so that being screwed together in the nut of the screw rod 131
122 as the brake wire 13 generates displacement and compresses the swing arm 121, and therefore, which can drive Brake shoe, and (figure is not
It is painted) it struts outward, to compress the brake drum for being installed on vehicle wheel rim, and then generate brake power.
With the increase for using the time, the Brake shoe is gradually worn out, so that the spacing of Brake shoe and brake drum expands
Greatly, the stroke for causing user that must pull the brake handgrip 11 must extend, and Brake shoe and brake drum can be made to occur
It contacts and generates brake effect.Accordingly, which need to be dependent on the manpower turn nut 122, force the swing arm
121 strut Brake shoe towards the brake wire 13 is mobile slightly outwards, form the spacing of Brake shoe and brake drum and evil spirit
Vehicle shoe plate not yet wears preceding identical level, to maintain the brake effect of the existing Drum brake device 1.
However, being usually dependent on specialized maintenance personnel for the user for being unfamiliar with vehicle maintenance and adjusting the nut
122, thus packing adjustment can not be carried out to the swing arm 121 by the nut 122 in time after Brake shoe is worn, so that
The brake power of vehicle is insufficient and brake distance is caused to be significantly increased, and seriously endangers the driving safety of vehicle.Furthermore maintenance personal
In order to avoid said circumstances generation, often for user significantly the turn nut 122 with will be between Brake shoe and brake drum
Away from very little is reduced to, the existing Drum brake device 1 is allowed to remain to possess certain brake effect after Brake shoe abrasion.But it brakes
The spacing of shoe plate and brake drum is too small, and to will cause brake operation excessively sensitive, once user accidentally touches the brake handgrip 11
When, it is possible to generate not expected brake behavior (such as: tire is locked to skid) and the accident that occurs.
To solve the above-mentioned problems, in addition No. 549283 Patent Case of TaiWan, China patent announcement discloses a kind of existing evil spirit
Vehicle automatic regulating apparatus 2 please refers to shown in Figure 1B, can be applied in aforementioned existing Drum brake device 1, the existing evil spirit
Vehicle automatic regulating apparatus 2 includes a touch switch 21,22 1 gear set 23 of a power source and a control unit 24.The touch switch
21 are connected with the brake handgrip 11；The power source 22 is fixed on the swing arm 121 of the brake unit 12；The gear set 23 includes phase
The first gear part 231 and a second gear part 232 mutually engaged, the first gear part 231 are incorporated on the power source 22 simultaneously
It is directly driven by the power source 22, which combines the nut 122 of the brake unit 12, and second tooth
Gear member 232 and the nut 122 are that the state integrally interlocked is presented in fixed each other.The control unit 24 is respectively coupled to the touch switch
21 and the power source 22.
By the way that the existing brake automatic regulating apparatus 2 is arranged, when Brake shoe is worn so that Brake shoe and brake drum
When spacing expands, user pulls the stroke of the brake handgrip 11 that can extend, therefore will press the touch-pressure switch 21, with the touching
Compress switch the starting of control unit 24 of the 21 couplings power source 22, which drives the first gear part 231 rotation, in turn
The second gear part 232 and the nut 122 is driven to rotate, together to force the swing arm 121 will be very towards the brake wire 13 movement
Vehicle shoe plate struts slightly outwards, forms the spacing of Brake shoe and brake drum and not yet wears preceding identical standard with Brake shoe
Position.Accordingly, the spacing of which is capable of Drum brake Brake shoe and brake drum keeps definite value,
Effectively control the amplitude of variation of the brake effect of the existing Drum brake device 1.
But the existing brake automatic regulating apparatus 2 is needed using electricity such as touch switch 21, power source 22 and control units 24
Subcomponent, the disadvantages of making it have with high costs, high failure rate and maintenance difficult, since cost is relatively low and the easy existing drum of maintenance
The market value that Drum brake will be greatly reduced in the existing brake automatic regulating apparatus 2 is arranged in the important advantage of formula brake, it is clear that
Industry demand is not met.Also, the power source 22 must be secured to the swing arm 121 of the brake unit 12, actually in existing vehicle
Braking system in the reserved space for accommodating the power source 22, and the swing arm 121 of existing vehicle is also without corresponding combination
Position is for the power source 22 assembling, and in other words, which can not be suitable in commercially available vehicle,
It cannot individually sell and voluntarily buy more installation for user, the scope of application will be limited seriously.Moreover the existing brake adjust automatically dress
It sets 2 also to need that the touch switch 21 is installed in the position of brake handgrip or brake pedal, and with conducting wire by the control unit 24
It is respectively coupled to the touch switch 21 and the power source 22, so that the existing brake automatic regulating apparatus 2 is dfficult to apply to car body sky
Between be limited locomotive or bicycle in.
Summary of the invention
The device for rousing evil spirit's free clearance can be compensated automatically in brake process the purpose of the present invention is to provide one kind, with
One connection slide connection brake rocker adjustment screw and input one brake pulling force brake conducting wire, and by the connection slide with
Mutual movement between its shell for being articulated in a fixing seat and rotate the adjustment screw, make the brake rocker of drum evil spirit towards should
Reach balance after brake one angle of conducting wire beat, to compensate the free clearance between the Brake shoe of excessive wear and brake rim.
To reach above-mentioned purpose, technological means of the invention includes: a fixing seat, a shell, a connection slide and one
Rotate guide mechanism.The shell is articulated in the fixing seat, and the inside of the shell simultaneously has an internal diameter chamber；The connection slide can edge
The internal diameter chamber move freely, one end is embedded a unilateral bearing, and with the nested adjustment spiral shell of the internal diameter of the unilateral bearing
After bar, which is rotationally connected in the connection slide, the connection slide other end is swingable
Ground connects the brake conducting wire；The rotation guide mechanism by a guide pin of fitting in correspondence with each other and one include straight trough and skewed slot guide groove
It is respectively arranged on the shell and the connection slide, and when the pull distance of the brake conducting wire reaches a predetermined value, and makes this
It connects slide and rotates an angle, and then shorten the action length of the adjustment screw, and increase the deflection angle of the brake rocker arm.
In one embodiment, which is fixedly arranged on the car body or vehicle frame of setting drum evil spirit, or is fixed on the drum
On the brake drum of evil spirit.
In one embodiment, opening up for the straight trough of the guide groove is oriented parallel to the connection slide moving direction, the guide groove
Skewed slot open up direction and the direction shape that opens up of the straight trough has angle.The connection slide is revolved by the rotation guide mechanism
The direction turned is the rotation direction that the unilateral bearing internal-and external diameter is in lockup state.
In one embodiment of the present invention, the guide groove of the rotation guide mechanism is set to the surface of the connection slide,
The guide pin is set on the shell and correspondence is embedded to the guide groove；The fixing seat is including a bottom plate, a top plate and connects the bottom
The side wall of plate and the top plate, the bottom plate have a lockhole that the fixing seat is threaded into the brake drum, which has one to supply
One pivot hole of shell pivot joint, the side wall are equipped with the slot passed through for the brake conducting wire.
The adjustment screw end has a neck, which has one the adjustment screw end is supplied to penetrate
The radial wall surface projection of through-hole, the through-hole has at least one fixed pin for extending to the neck, to prevent adjustment screw abjection should
Connection slide simultaneously can be such that the adjustment screw rotates freely relative to the connection slide.
The present invention additionally provides a kind of rocker arm end compensating devices of bulging evil spirit's free clearance, are set to brake rocker arm assembly and evil spirit
Between vehicle conducting wire, the brake rocker arm assembly include one swing when can brake after involution original position brake rocker arm, one pass through this
The adjustment screw of the pin shaft of the beat end of brake rocker arm and a sleeve nut for positioning and being screwed into the adjustment screw, this shakes
Arm end compensating device includes:
One fixed beam is mounted on a fixed part and the first auxiliary section extended by the fixed part, the fixed part
The beat end, first auxiliary section extend towards the sleeve nut side:
One switch rod piece, with a lantern ring and from the set ring center radially outward shape stretching, extension the second auxiliary section；And
One unilateral bearing, with internal diameter and outer diameter that single side turns to interaction, and the internal diameter is fastened in the sleeve nut
Sleeve part on, the outer diameter for the switch rod piece lantern ring buckle fix；
First auxiliary section or second auxiliary section include a limitation space, and first auxiliary section and second auxiliary section are at this
It limits mutually group set in space to restrain, which includes that a pushing and pressing face and one reverse face, this is solid
Fixed pole part rotates with the brake of the brake rocker arm, involution original position when, first auxiliary section and second auxiliary section exist
In the limitation space it is non-interference or the brake rocker arm rotation when, first auxiliary section oppress and push the pushing and pressing face so that this
Second auxiliary section stress makes the switch rod piece that the unilateral bearing be driven to rotate towards internal-and external diameter linkage direction, and drives the sleeve spiral shell
Mother rotates along the adjustment screw to advance, to reduce drum evil spirit's free clearance, when brake rocker arm rotation is replied, and first auxiliary section
Oppress and push this to reverse face so that the switch rod piece drive the unilateral bearing do not link towards internal-and external diameter direction rotation, without rotate
The sleeve nut.
Wherein, which is a slot, and the opposite flank of the slot is respectively the pushing and pressing face and this reverses face,
Second auxiliary section is a flange for protruding into the slot.
Wherein, which is a fluting, and the opposite flank of the fluting is respectively the pushing and pressing face and this reverses face,
First auxiliary section is a body of rod for protruding into the fluting.
Wherein, which is the fan tooth group of more than one a gear teeth, two flank of tooth of the one pair of them gear teeth of the fan tooth group
Respectively the pushing and pressing face and this reverse face, which is the corresponding fork arm for protruding into the fan tooth group.
Wherein, which is additionally provided with institute as above in the side backwards to the sleeve nut for being located at the brake rocker arm
The autocompensation installation stated.
As described above, the features of the present invention includes: the present invention is set between brake rocker and brake conducting wire, is not required to pair
Existing drum brakes structure is substantially reequiped i.e. applicable；The present invention is dynamic driving, is without the use of electric power, it can be ensured that
Normal operation is remained under conditions of power breakdown；The present invention corresponds to different Brake cables with fluting shape of different shapes and draws
Power, and then the movement that the connection slide only moved back and forth or made movement and the rotation of combined type is guided, to be led according to brake
The pulling force of line carries out simple pulling brake rocker arm brake (when brake lining is not worn away), or carries out pulling brake rocker arm and rotation
Tight adjustment screw (when brake lining is worn away).
Detailed description of the invention
Figure 1A: the floor map of the drum type braking device of the prior art；
Figure 1B: the floor map of the drum type braking device of another prior art；
Fig. 2: the perspective view of one embodiment of autocompensation installation of the invention；
Another angle perspective view of Fig. 3: Fig. 2 autocompensation installation embodiment；
The exploded perspective figure of Fig. 4: Fig. 3 autocompensation installation embodiment；
Fig. 5: the floor map before the adjustment free clearance of autocompensation installation of the invention；
Fig. 6: the action schematic diagram when adjustment free clearance of autocompensation installation of the invention；
Fig. 7: the floor map after the adjustment free clearance of autocompensation installation of the invention；
Fig. 8: the rearview of an embodiment of rocker arm end compensating device of the invention；
Fig. 9: the exploded perspective figure of the first embodiment of rocker arm end compensating device of the invention；
Figure 10: Fig. 9 three-dimensional combination figure；
Figure 11: rearview when not braking of rocker arm end compensating device of the invention；
Figure 12: the brake of rocker arm end compensating device of the invention and the rearview for releasing relevant action when braking；
Figure 13: the rearview of the second embodiment of rocker arm end compensating device of the invention；
Figure 14: Figure 13 perspective view；
Figure 15: the perspective view of the 3rd embodiment of rocker arm end compensating device of the invention；
Figure 16: the perspective view of the first embodiment of rocker arm end compensating device combination autocompensation installation of the invention；
The brake of rocker arm end compensating device in Figure 17: Figure 16 and the rearview for releasing relevant action when braking；
Figure 18: the perspective view of the second embodiment of rocker arm end compensating device combination autocompensation installation of the invention；
Figure 19: the perspective view of the 3rd embodiment of rocker arm end compensating device combination autocompensation installation of the invention.
Description of symbols
﹝ this Fa Ming ﹞
3 autocompensation installation, 31 fixing seat
311 top plates 3111 are pivoted hole
312 bottom plate, 3121 lockhole
313 side wall, 3131 slot
32 shell, 321 internal diameter chamber
322 drive-connecting shafts 33 connect slide
331 unilateral bearing, 332 interconnecting piece
333 through-hole, 334 fixed pin
34 rotation 341 guide pins of guide mechanism
342 guide groove, 3421 straight trough
3422 skewed slots 4 drum is very
41 brake drums 42 brake conducting wire
43 brake 431 pivots of rocker arm assembly
432 brake 321 beat ends of Rocker arm 4
4322 pin shaft, 433 Return spring
434 adjustment screw, 4341 neck
435 sleeve nut, 4351 sleeve part
5 car bodies or 51 brake handle of vehicle frame or brake pedal
6,6 ', 6 " rocker arm end compensating device, 61,61 ', 61 " fixed beam
611 fixed part, 612,612 ', 612 " first auxiliary section
6121 slot, 6122 body of rod
6123 fork arm, 62 switch rod piece
621 lantern ring, 622 second auxiliary section
6221 flanges 6222 fluting
63 unilateral bearing, 631 internal diameter
632 outer diameters 64 limit space
641 pushing and pressing faces 642 reverse face
A does not brake and does not brake initial angle after initial angle B compensation
C deflection angle D adapts to angle
P brake pulling force S, S1, S2, the section S3
﹝ Xian You ﹞
1 existing 11 brake handgrip of Drum brake device
12 brake 121 swing arms of unit
122 nut, 13 brake wire
The existing brake automatic regulating apparatus of 131 screw rod 2
21 touch switch, 22 power source
23 gear set, 231 first gear part
232 second gear part, 24 control unit.
Specific embodiment
Now cooperation attached drawing by the embodiment of the present invention, detailed description are as follows, appended attached drawing is simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore only indicates element related to the present invention in the drawings, and show
Number, shape, dimension scale etc. when the element shown is not to implement are drawn, and specification when actual implementation is actually
A kind of selective design, and its component placement form is possible to increasingly complex.
Shown in as shown in Figure 2, Figure 3 and Figure 4.The autocompensation installation 3 of drum evil spirit's free clearance of the present embodiment is connected the drum very 4
The one brake conducting wire 42 in 41 outside of brake drum and a brake rocker arm assembly 43,42 other end of brake conducting wire are connected to implementable one
A brake handle or brake pedal 51 for brake pulling force, the brake rocker arm assembly 43 include brake a Rocker arm 4 32, a Return spring
433, an adjustment screw 434 and a sleeve nut 435.The brake Rocker arm 4 32 is with a pivot 431 for one angle of axle center beat
Afterwards, lining (not shown) table in the drum very 4 can be changed with lever principle (this is the design fundamentals of evil spirit's brake system)
Free clearance size between corresponding 41 inner wall of brake drum in face；The Return spring 433 be set to the brake Rocker arm 4 32 with
Between the pivot 431, it acts as 32 involution of the brake Rocker arm 4 (Rocker arm 4s 32 of braking when not braking in situ that can make beat
Initial position)；435 spiral shell of sleeve nut is set to the adjustment screw 434 of the beat end 4321 of the brake Rocker arm 4 32, to carry out
The positioning of adjustment screw 434 simultaneously can adjust the action length of the adjustment screw 434 (please first referring concurrently to shown in Fig. 5, i.e., by the tune
The end face of the receiving brake pulling force of whole screw rod 434 is connect to the adjustment screw 434 with the beat end 4321 of the brake Rocker arm 4 32
Distance, under normal setting, the action length is longer, and the initial angle A that do not brake of the brake Rocker arm 4 32 is smaller, then the drum
Very 4 free clearance is bigger).
The autocompensation installation 3 of the present embodiment includes: fixing seat 31, shell 32, connection slide 33 and rotation guiding
Mechanism 34.Fixing seat 31 is fixedly arranged on the brake drum 41 that the drum very 4 is arranged, and but not limited to this (for example, the fixing seat 31
Also it is securable on car body or vehicle frame 5 that the drum very 4 is set).Shell 32 is hubbed at the fixing seat 31, internal to have an internal diameter
Chamber 321；Connection slide 33 can be moved freely along the internal diameter chamber 321, and an end face of connection slide 33 is embedded an one-way shaft
331 are held, and with the internal diameter of the unilateral bearing 331 for can be rotated 434 end of adjustment screw after 434 nesting of adjustment screw
Ground is connected in the connection slide 33, and the opposite other end of the connection slide 33 has one to connect the evil spirit swingablely
The interconnecting piece 332 of vehicle conducting wire 42.One guide pin 341 and one of fitting in correspondence with each other is included each other by the rotation guide mechanism 34
The straight trough 3421 of connection and the guide groove 342 of skewed slot 3422, are respectively arranged at the face between the shell 32 and the connection slide 33
On the position on opposite, specifically, the guide groove 342 is set to the surface of the connection slide 33, which is set to the shell
On 32 and correspondence is embedded to the guide groove 342, certainly in another embodiment can also invert the guide pin 341 and the guide groove 342
(i.e. guide pin 341 setting 33 surface of connection slide, guide groove 342 be arranged on the shell 32), and adjust the straight trough 3411 with
The sequence and angle direction of skewed slot 3422 also may achieve same effect.
It is continuous to refer to shown in Fig. 5, Fig. 6 and Fig. 7.According to the embodiment of above structure, when user is with brake handle or brake
When vehicle pedal 51 is to one brake pulling force P of the brake conducting wire 42 input, which pulls the connection slide 33 toward the brake
The direction (right side of Fig. 5) of conducting wire 42 is mobile, which drives the adjustment screw 434 for being connected in the other end in the same direction therewith
Mobile, which can make the brake Rocker arm 4 32 by the initial angle of not braking when pulling to 42 direction of brake conducting wire
Spend A(it is as shown in Figure 5) rotation one deflection angle C(it is as shown in Figure 6), while the Return spring 433 generate accumulation of energy effect, can make
The free clearance of the drum very 4 is eliminated and generates braking action.
It is noted that when the lining (or Brake shoe) of the drum very 4 is not worn away, it is defeated to the brake conducting wire 42
The free clearance of the drum very 4 can be eliminated and obtain enough brake weights by entering a brake pulling force P, and when the brake pulling force P is removed
Afterwards, which is retracted the position of the former initial angle A that do not brake by 433 restoring force of Return spring, but also the tune
Whole screw rod 434, the connection slide 33 and the brake conducting wire 42 reply the position before original brake, and the connection slide 33 is past at this time
Multiple shift motion moves in the range of corresponding to the fixed guide pin 341 and the straight trough 3421 of the guide groove 342, therefore should
Connection slide 33 only will do it the movement of simple back-and-forth motion, without generating spinning movement；However, enabling when the drum very 4
After piece (or Brake shoe) abrasion, between the brake conducting wire 42 inputs a brake pulling force P and can not eliminate the freedom of the drum very 4
Gap simultaneously obtains enough brake weights, and user (such as vehicle drive people) intuitively reinforces then being input into the brake conducting wire 42 at this time
Power, so that the brake conducting wire 42 is entered the pulling force greater than brake pulling force P, the stroke that the connection slide 33 is pulled at this time
Can be by corresponding 3421 range of straight trough of guide pin 341 excessively to skewed slot 3422, and make the connection slide 33 accordingly to one first
Direction generates rotation, after the connection slide 33 rotation i.e. with the unilateral bearing 331 drive the adjustment screw 434 synchronous to this first
Direction rotation (when the unilateral bearing 331 is rotated to the first direction, internal-and external diameter is in lockup state), so that the adjustment screw
434 with the sleeve nut 435 carry out opposite screw lock effect (sleeve nut 435 is motionless, and the adjustment screw 434 rotation and move
It is dynamic), and shorten the action length of the adjustment screw 434 with screw pitch process appropriate；Brake drawing should be greater than when user removes
After the pulling force of power P, which is back moved, and returns to straight trough 3421 in corresponding 3422 range of skewed slot of guide pin 341
When range, which accordingly generates rotation to the opposite direction of a first direction, after the connection slide 33 rotation i.e.
Drive the adjustment screw 434 is synchronous to rotate the (unilateral bearing 331 to this in contrast to the first direction with the unilateral bearing 331
When the opposite direction rotation of first direction, internal-and external diameter is free to rotate in release conditions), therefore the adjustment screw will not be made
The 434 synchronous action lengths for generating rotation, being adjusted before will not replying again, at this point, the brake Rocker arm 4 32 is not applying brake
Do not brake initial angle B after compensation when vehicle pulling force, therefore keeps the free clearance reduced, therefore can make the mill because of lining yet
Free clearance derived from consuming expands problem and is compensated and corrected, as shown in Figure 7.
Certainly, mobile towards 42 direction of brake conducting wire when the connection slide 33 and pull the adjustment screw 434 in the same direction
When, which then can be because of being limited to the beat end 4321 of the brake Rocker arm 4 32 into wheel (i.e. towards the brake
The direction of conducting wire 42) deflection, and it is enhanced its horizontal position simultaneously, and the connection because connecting 434 other end of adjustment screw is sliding
The mobile shell 32 of the external guidance of seat 33, is pivotally connected with the fixed fixing seat 31, and makes the shell 32 and fixing seat 31
Form the structure that can be bent mutually, therefore the structures such as the shell 32 and its connection slide 33 moved in inside, the adjustment screw 434
Part can automatically form an oblique angle then, and adapt to because of the amplitude of oscillation that the 32 beat face of brake Rocker arm 4 generates.
In the above-described embodiments, opening up for the straight trough 3421 of the guide groove 342 is oriented parallel to the 33 movement side of connection slide
To, the skewed slot 3422 of the guide groove 342 open up direction and the direction shape that opens up of the straight trough 3421 has angle.
In one embodiment, as shown in Figure 2 to 4.The fixing seat 31 includes a bottom plate 312, a top plate 311 and connection should
The side wall 313 of bottom plate 312 and the top plate 311, the bottom plate 312 have a lock that the fixing seat 31 is threaded into the brake drum 41
Hole 3121, the top plate 311 have one to be pivoted hole 3111 for the one of the shell 32 pivot joint, which is equipped with one and leads for the brake
The outer tube of line 42(or the brake conducting wire 42) slot 3131 that passes through.
In one embodiment, which has a neck 4341, which has one
Radial wall surface projection for the through-hole 333 that 434 end of adjustment screw penetrates, the through-hole 333 has at least one to extend to the neck
4341 fixed pin 334, with prevent the adjustment screw 434 deviate from the connection slide 22 and can make the adjustment screw 434 relative to
The connection slide 33 rotates freely through.
In addition, please referring to shown in Fig. 8-Figure 10.The rocker arm end compensating device 6 of drum evil spirit's free clearance in the present embodiment, if
It sets between brake rocker arm assembly 43 and brake conducting wire 42, the brake rocker arm assembly 43 is as previously mentioned, include pendulum when can brake
Involution brake Rocker arm 4 32, one in situ passes through the adjustment spiral shell of the pin shaft 4322 of the beat end 4321 of the brake Rocker arm 4 32 after dynamic
Bar 434 and a positioning and the sleeve nut 435 for being screwed into the adjustment screw 434, the rocker arm end compensating device 6 include:
One fixed beam 61, with a fixed part 611 and the first auxiliary section 612 extended by the fixed part 611, the fixed part
611 are mounted on the beat end 4321, which extends towards 435 side of sleeve nut；One switch rod piece
62, with a lantern ring 621 and from the center of circle of the lantern ring 621 radially outward shape stretching, extension the second auxiliary section 622；And one is unidirectional
Bearing 63, with internal diameter 631 and outer diameter 632 that single side turns to interaction, and the internal diameter 631 is fastened in the sleeve nut
On 435 sleeve part 4351, which buckles for the lantern ring 621 of the driving lever part 62 and is fixed.
Please 1- Figure 12 referring to Fig.1 jointly.In above-mentioned 6 component of rocker arm end compensating device, first auxiliary section 612 or this second
Auxiliary section 622 includes a limitation space 64, and first auxiliary section 612 and second auxiliary section 622 are in the limitation space 64
Mutually group set restrains (it is section S that second auxiliary section 622, which is located at the limitation space 64, in such as Figure 11), and the limitation space 64 is mutual
Face-to-face corresponding two sides includes that a pushing and pressing face 641 and one reverses face 642, and the fixed beam 61 is with the brake Rocker arm 4 32
Brake and rotate or when involution home position, if in the case where being still not required to adjust the free clearance of bulging evil spirit, automatically, should
First auxiliary section 612 and second auxiliary section 622 are non-interference in the limitation space 64, and (in such as Figure 12, what solid line indicated should
First auxiliary section 612 is home position, and second auxiliary section 622 is located at the limitation space 64 for section S1 at this time, is fixed at this
Rod piece 61 makees first auxiliary section 612 indicated after the non-rotation for adjusting gap for double dot dash line, and second auxiliary section 622 is corresponding
Section S2)；If in the case that the free clearance of drum evil spirit is excessive, when the brake of the brake Rocker arm 4 32, rotational angle will
Become larger, at this time when the brake rocker arm rotates, the moving distance of first auxiliary section 612 will exceed limitation space 64(as schemed
The position for first auxiliary section 612 that dotted line in 12 indicates, the corresponding section S3 in second auxiliary section 622), it then oppresses and pushes away
The pushing and pressing face 641 is moved, 622 stress of the second auxiliary section is made, and interlocks the switch rod piece 62 rotation, more jointly drives this unidirectional
Bearing 63 rotates towards its internal diameter 631, the linkage of outer diameter 632 direction, and drives the sleeve nut 435 along the adjustment screw 434
It rotates and advances, to reduce drum evil spirit's free clearance, when the brake Rocker arm 4 32 revolution, which, which oppresses, is simultaneously pushed
This reverses face 642, so that the switch rod piece 62 drives the unilateral bearing 63 to rotate towards the direction that internal diameter 631, outer diameter 632 do not link
(being unable to drive the rotation of internal diameter 631 at this time) without rotating the sleeve nut 435, and then completes the list of the primary sleeve nut 435
It marches forward rotation.In the present embodiment, which is a slot 6121, and the opposite flank of the slot 6121 is distinguished
For the pushing and pressing face 641 and this reverse face 642, which is the flange 6221 for protruding into the slot 6121.
It is noted that if the sleeve nut 435 to turn clockwise when with towards 434 tail end of adjustment screw
It moves to shorten between 434 action length of adjustment screw, diminution drum in the case of free clearance, this of the embodiment of the Fig. 8 is fixed
Rod piece 61 be set between the adjustment screw 434 and the brake drum 41 (i.e. the adjustment screw 434 face the brake drum 41 one
Side).
As shown in Figure 13-Figure 14.In the rocker arm end compensating device 6 ' of another embodiment, which opens for one
Slot 6222, the opposite flank of the fluting 6222 is respectively the pushing and pressing face 641 and this reverses face 641, which is to stretch
Enter a body of rod 6122 of the fluting 6222.
As shown in figure 15.In the rocker arm end compensating device 6 " of another embodiment, which is more than one a gear teeth
Tooth group is fanned, two flank of tooth of the one pair of them gear teeth of the fan tooth group are respectively the pushing and pressing face and this reverses face, which is
Protrude into the corresponding fork arm 6123 of the fan tooth group.
As shown in Figure 16, Figure 18 and Figure 19.The adjustment screw of the invention is in the sleeve backwards for being located at the brake rocker arm
The side of nut is additionally provided with the autocompensation installation 3, in this way, which the adjustment of drum evil spirit's free clearance, is mended by the rocker arm end
Device (6,6 ', 6 ") is repaid to share jointly with the autocompensation installation 3.
As shown in figure 17, the rocker arm end compensating device 6 in Figure 16 configuration and movement signal, by figure it is found that stopping
Che Shi, after the autocompensation installation 3 movement, although the adjustment screw 434 simultaneous with the movement axially rotated, the rocker arm at this time
End compensating device (6,6 ', 6 ") still can normally interact therewith (in such as Figure 17, dotted line indicate the first auxiliary section 612 and section S1
The first auxiliary section 612 and section S2 that initial position, double dot dash line when not brake indicate when being brake not there is adjustment to rouse
Between gap act on position, dotted line indicate an auxiliary section 612 and section S3 be brake when with adjustment rouse between gap effect
Position), and cooperate with and reach the purpose for adjusting drum evil spirit's free clearance (in this embodiment, if with towards 434 tail end of adjustment screw
When, which shortens free clearance between 434 action length of adjustment screw, diminution drum to rotate clockwise
In the case of, the fixed beam (61,61 ' 61 ") of the embodiment of the Figure 16,18,19 is set to the adjustment screw 434 in face of being somebody's turn to do
Brake drum 41 is tossed about).
The embodiment or embodiment of aforementioned the technology used in the present invention means are not used to limit the invention patent reality
The range applied.It is i.e. all be consistent with claims of the present invention context or equivalent change made according to the claims of the present invention with
Modification, belongs to protection scope of the present invention.
Claims (10)
1. a kind of autocompensation installation of bulging evil spirit's free clearance, it is characterised in that: the autocompensation installation is connected drum evil spirit's
A brake conducting wire and a brake rocker arm assembly on the outside of brake drum, the brake rocker arm assembly include one using a pivot as axis
One angle of heart beat and change the brake rocker arm of drum evil spirit's free clearance size, one keep brake rocker arm involution of beat former
The Return spring of position, a spiral shell are set to the adjustment screw of the brake rocker arm beat end and one positions and adjusts the adjustment spiral shell
The sleeve nut of the action length of bar, the autocompensation installation include:
One fixing seat:
One shell is hubbed at the fixing seat, internal to have an internal diameter chamber；
One connection slide, can move freely, one end face is embedded a unilateral bearing, and with the list along the internal diameter chamber
To after nested adjustment screw of internal diameter of bearing, it is connected in the adjustment screw end rotationally in the connection slide, the company
Connect the interconnecting piece that slide other end connects the brake conducting wire with one swingablely；And
One rotation guide mechanism sets a guide pin of fitting in correspondence with each other and a guide groove including straight trough and skewed slot respectively
It is placed on the shell and the connection slide, and when the pulling force of the brake conducting wire reaches a predetermined value, revolves the connection slide
Deflection angle when turning an angle to rotate the adjustment screw, and then increasing the brake rocker arm original state.
2. autocompensation installation as described in claim 1, it is characterised in that: the fixing seat is fixedly arranged on the vehicle of setting drum evil spirit
On body, vehicle frame or the brake drum.
3. autocompensation installation as described in claim 1, it is characterised in that: opening up for the straight trough of the guide groove is oriented parallel to this
Connect slide moving direction, the skewed slot of the guide groove open up direction and the straight trough open up direction shape in an angle.
4. autocompensation installation as described in claim 1, it is characterised in that: the connection slide by the rotation guide mechanism and
The direction of rotation is the rotation direction that the unilateral bearing internal-and external diameter is in lockup state.
5. autocompensation installation as described in claim 1, it is characterised in that: the guide groove of the rotation guide mechanism is set to this
Connect slide surface, the guide pin be set on the shell and correspondence be embedded to the guide groove, the fixing seat include a bottom plate,
One top plate and the side wall for connecting the bottom plate Yu the top plate, the bottom plate have one and the fixing seat are threaded into the one of the brake drum
A lockhole, the top plate have a hole that is pivoted for shell pivot joint, which is equipped with one and passes through for the brake conducting wire
Slot, which has a neck, which there is one to be worn for the adjustment screw end
The radial wall surface projection of the through-hole entered, the through-hole has at least one to extend to the fixed pin of the neck, to prevent the adjustment screw
Deviate from the connection slide and the adjustment screw can be made to rotate freely relative to the connection slide.
6. a kind of rocker arm end compensating device of bulging evil spirit's free clearance is set between brake rocker arm assembly and brake conducting wire, this is very
Vehicle rocker arm assembly include one swing when can brake after involution brake rocker arm in situ, a beat end for passing through the brake rocker arm
The adjustment screw of the pin shaft in portion and a sleeve nut for positioning and being screwed into the adjustment screw, the rocker arm end compensating device packet
It includes:
One fixed beam is mounted on a fixed part and the first auxiliary section extended by the fixed part, the fixed part
The beat end, first auxiliary section extend towards the sleeve nut side；
One switch rod piece, with a lantern ring and from the set ring center radially outward shape stretching, extension the second auxiliary section；And
One unilateral bearing, with internal diameter and outer diameter that single side turns to interaction, and the internal diameter is fastened in the sleeve nut
Sleeve part on, the outer diameter for the switch rod piece lantern ring buckle fix；
It is characterized by: first auxiliary section or second auxiliary section include a limitation space, first auxiliary section with this
Two auxiliary sections mutually group set in the limitation space restrains, which includes a pushing and pressing face and one
Reverse face, which rotates with the brake of the brake rocker arm, involution original position when, first auxiliary section and this
Two auxiliary sections are non-interference in the limitation space or in brake rocker arm rotation, which oppresses and this is pushed to push away
To face so that the second auxiliary section stress, makes the switch rod piece that the unilateral bearing be driven to rotate towards internal-and external diameter linkage direction, and band
It moves the sleeve nut and is rotated along the adjustment screw and advanced, it should when brake rocker arm rotation is replied to reduce drum evil spirit's free clearance
First auxiliary section oppress and push this to reverse face so that the switch rod piece drive the unilateral bearing do not link towards internal-and external diameter direction turn
It is dynamic, without rotating the sleeve nut.
7. the rocker arm end compensating device of drum evil spirit's free clearance as claimed in claim 6, it is characterised in that: first auxiliary section is
One slot, the opposite flank of the slot is respectively the pushing and pressing face and this reverses face, which is to protrude into the slot
One flange.
8. the rocker arm end compensating device of drum evil spirit's free clearance as claimed in claim 6, it is characterised in that: second auxiliary section is
One fluting, the opposite flank of the fluting is respectively the pushing and pressing face and this reverses face, which is to protrude into the fluting
One body of rod.
9. the rocker arm end compensating device of drum evil spirit's free clearance as claimed in claim 6, it is characterised in that: second auxiliary section is
The fan tooth group of a gear teeth more than one, two flank of tooth of the one pair of them gear teeth of the fan tooth group are respectively the pushing and pressing face and this reverses face, should
First auxiliary section is the corresponding fork arm for protruding into the fan tooth group.
10. the rocker arm end compensating device of drum evil spirit's free clearance as claimed in claim 6, it is characterised in that: the adjustment screw exists
Positioned at the side backwards to the sleeve nut of the brake rocker arm, it is additionally provided with autocompensation installation as claimed in claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106122875 | 2017-07-07 | ||
| TW106122875A TWI628373B (en) | 2017-07-07 | 2017-07-07 | Automatic compensation device for drum brake free clearance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109210112A true CN109210112A (en) | 2019-01-15 |
| CN109210112B CN109210112B (en) | 2020-02-18 |
Family
ID=63640314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710879675.1A Active CN109210112B (en) | 2017-07-07 | 2017-09-26 | Automatic compensation device for free clearance of drum brake and rocker arm end compensation device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6429051B1 (en) |
| CN (1) | CN109210112B (en) |
| TW (1) | TWI628373B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159673A (en) * | 2019-04-23 | 2019-08-23 | 高邮市顺达动力机电有限公司 | A kind of adjustable braking drum brake |
| CN115013460B (en) * | 2022-07-21 | 2023-06-16 | 临沂高新区鸿图电子有限公司 | Linear travel alarm mechanism with adjustable initial position |
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| CN201730984U (en) * | 2010-07-27 | 2011-02-02 | 泸州开士乐工程技术有限责任公司 | Brake |
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| CN106151329A (en) * | 2015-01-07 | 2016-11-23 | 明鸿工业股份有限公司 | automatic brake adjusting device |
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| JPS5218646A (en) * | 1975-08-02 | 1977-02-12 | Yoshigai Kikai Kinzoku Co Ltd | Bicycle brake regulator |
| US4442923A (en) * | 1980-07-18 | 1984-04-17 | Honda Giken Kogyo Kabushiki Kaisha | Automatic regulator for internally expanding drum brake |
| DE3143765A1 (en) * | 1980-11-07 | 1982-05-27 | Honda Giken Kogyo K.K., Tokyo | AUTOMATIC ADJUSTING DEVICE FOR AN ACTUATING MECHANISM AND ITS OPERATING ROPE |
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| TW549283U (en) * | 2002-07-31 | 2003-08-21 | Ming Ho Ind Co Ltd | Automatic electric compensation apparatus for brake of motorcycle |
| TW201616004A (en) * | 2014-10-22 | 2016-05-01 | 呂春明 | Drum brake shoe clearance adjustment device automatically |
| CN204828407U (en) * | 2015-08-17 | 2015-12-02 | 三阳工业股份有限公司 | Drum -type brake self -modulation mechanism |
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- 2017-07-07 TW TW106122875A patent/TWI628373B/en active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5067596A (en) * | 1990-10-09 | 1991-11-26 | Allied Signal Inc. | Clip-on automatic adjuster strut lever for a drum brake |
| CN2130758Y (en) * | 1992-05-29 | 1993-04-28 | 陈月辉 | Bidirectional inertia boosting brake |
| CN2570166Y (en) * | 2002-11-25 | 2003-09-03 | 夏玉勤 | Regulating means for operating mechanism of motorcycle brake |
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| CN106151329A (en) * | 2015-01-07 | 2016-11-23 | 明鸿工业股份有限公司 | automatic brake adjusting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109210112B (en) | 2020-02-18 |
| TWI628373B (en) | 2018-07-01 |
| TW201907095A (en) | 2019-02-16 |
| JP6429051B1 (en) | 2018-11-28 |
| JP2019015396A (en) | 2019-01-31 |
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