CN108223628A - A kind of parking torque arm structure - Google Patents
A kind of parking torque arm structure Download PDFInfo
- Publication number
- CN108223628A CN108223628A CN201810214314.XA CN201810214314A CN108223628A CN 108223628 A CN108223628 A CN 108223628A CN 201810214314 A CN201810214314 A CN 201810214314A CN 108223628 A CN108223628 A CN 108223628A
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- China
- Prior art keywords
- torque arm
- installation sheet
- arm
- plate
- axis pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
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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
- F16D2121/00—Type of actuator operation force
- F16D2121/14—Mechanical
-
- 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
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/58—Mechanical mechanisms transmitting linear movement
- F16D2125/68—Lever-link mechanisms, e.g. toggles with change of force ratio
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention provides a kind of parking torque arm structures, and including torque arm and strut, for the first end of strut for fitting with the first shoe plate, the second end of strut is relatively set with the first installation sheet and the second installation sheet；The connecting pin of torque arm is arranged between the first installation sheet and the second installation sheet, and axis pin is provided between the first installation sheet and the second installation sheet, and connecting pin is rotatablely connected with axis pin；The pushing part for fitting with the second shoe plate is provided on connecting pin.The parking torque arm structure of the present invention, the connecting pin of its torque arm is rotatablely connected by the first installation sheet and the second installation sheet of axis pin and strut, when in use, it can be there are two shear surface on axis pin, that is a shear surface is respectively formed between the first installation sheet and the second installation sheet and connecting pin, so as to which the shearing force that axis pin is subject to is dispersed on two shear surfaces, preferably avoiding axis pin, only there are one, by shearing force excessive the problem of being easily bent deformation, greatly reduce the possibility that axis pin occurs bending and deformation during shear surface.
Description
Technical field
The present invention relates to motor vehicle braking system component structural technical fields, and in particular to a kind of parking torque arm structure.
Background technology
Traditional drum brake be used as parking brake when, can by the torque arm in parking torque arm structure pull strut from
And two shoe plates are strutted, two shoe plates is made to be in contact respectively with brake drum, parking is realized so as to generate brake force.
As shown in Figures 1 to 5, the parking torque arm structure of existing drum brake generally includes torque arm 11 and strut 12, draws
One end of arm 11 passes through installing plate 18 and one end of strut 12 to be arranged in a crossed manner, and is connected between the two by axis pin 13, torque arm 11
It is upper first is provided at axis pin 13 to strut bar 111, bar 121 is strutted far from being provided with second at axis pin 13 on strut 12, it is right
The first perforation 17 for strutting bar 111 for first and passing through is provided on shoe plate 15, is provided on left shoe plate 14 and struts bar 121 for second
The second perforation 16 passed through.When in use, when pulling torque arm 11 to the left, torque arm 11 is rotated around axis pin 13, and the first of torque arm 11
It struts bar 111 and swings to the right and right shoe plate 15 is pushed to move right, simultaneously because reaction force, 13 junction of axis pin is moved to the left,
So as to which strut 12 be pushed to be moved to the left, strut bar 121 eventually by second and the left shoe plate 14 of promotion is driven also to be moved to the left, until left
Shoe plate 14, right shoe plate 15 fit closely to generate brake force with brake drum, realize braking.
The torque arm 11 of existing parking torque arm structure and strut 12 be it is arranged in a crossed manner after by axis pin 13 connection form rotation center.
During torque arm 11 is pulled, rotation center, that is, axis pin 13 can be by shearing force, if shearing force is F1.To in torque arm motion process
Force analysis it is as follows：
F*L1=F2*L2,
F* (L1+L2)=F1*L2.
Obtain F1=F* (L1+L2)/L2, the shear stress σ suffered by axis pin=(F* (L1+L2)/L2)/S wherein, " * "
It represents to be multiplied；L1 represents the vertical distance between applied force F and axis pin；L2 represent first strut the contact point of bar and right shoe plate with
Vertical distance between axis pin；F1 is the shearing force suffered by axis pin, is also equal to second and struts active force of the bar to left shoe plate；F2
One struts active force of the bar to right shoe plate, and S is the cross-sectional area of axis pin.Since axis pin only bears the shearing force there are one face,
It during long-time use is easier to that axis pin is caused to occur bending and deformation, so as to cause the loosening of torque arm and strut, influences parking
The service life of effect and parking torque arm structure.
Invention content
The object of the present invention is to provide a kind of parking torque arm structures, and deformation is easily bent to solve axis pin in the prior art
Problem.
To achieve the above object, the present invention provides following technical solutions：
A kind of parking torque arm structure, including torque arm and strut, the first end of the strut is used for and the first shoe plate phase
Fitting, the second end of the strut are relatively set with the first installation sheet and the second installation sheet；The connecting pin setting of the torque arm
Between first installation sheet and second installation sheet, it is provided between first installation sheet and second installation sheet
Axis pin, the connecting pin are rotatablely connected with the axis pin；It is provided with to push away with what the second shoe plate fitted on the connecting pin
Dynamic portion.
Preferably, the first end is provided with the first open slot, and the opening of first open slot is towards described first
Shoe plate, the slot bottom of first open slot are used to fit with first shoe plate.
Preferably, the connecting pin has the block being oppositely arranged and the mounting blocks for being connected with the axis pin, described
The second open slot is formed between mounting blocks and the block, the opening of second open slot is described towards second shoe plate
Pushing part is the bottom surface of second open slot.
Preferably, it is connected between the first end and the second end by first clamping piece with second intermediate plate, it is described
One end of first clamping piece is connected with first installation sheet, and the other end of the first clamping piece connects with the first of the first end
Fishplate bar is connected, and one end of the second intermediate plate is connected with second installation sheet, the other end of the second intermediate plate and described the
Second connecting plate of one end is connected；There is accommodation space between the first clamping piece and the second intermediate plate；The torque arm packet
Transverse arm and vertical arm are included, the transverse arm is arranged in the accommodation space, the extending direction of the transverse arm and the accommodation space
Extending direction is identical, and the vertical arm extends to the direction far from the accommodation space；One end of the transverse arm is the connecting pin,
The other end of the transverse arm is connected with the vertical arm.
Preferably, one end far from the transverse arm is provided with hook formation in the vertical arm.
Preferably, the transverse arm, the vertical arm and the hook formation form integral structure.
Preferably, the side far from the hook formation passes through on limiting plate and the second intermediate plate in the first clamping piece
Side far from the hook formation is connected, and the limiting plate is set close to the second end.
Preferably, the limiting plate forms integral structure with the first clamping piece and the second intermediate plate.
The beneficial effects of the present invention are：
The parking torque arm structure of the present invention, the connecting pin of torque arm passes through axis pin and the first installation sheet and second of strut
Installation sheet is rotatablely connected, when in use, can be there are two shear surface, i.e. the first installation sheet and the second installation sheet and connecting pin on axis pin
Between be respectively formed a shear surface, so as to effectively having disperseed in the shearing force to two shear surfaces that axis pin is subject to, preferably
Avoiding axis pin, only there are one, by shearing force excessive the problem of being easily bent deformation, and then greatly reduce axis pin during shear surface
The possibility to occur bending and deformation.
Description of the drawings
It in order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, and specific embodiments of the present invention will be made further specifically with reference to attached drawing
It is bright, wherein
Fig. 1 is the schematic diagram of existing parking torque arm structure when in use；
Fig. 2 is the schematic diagram of existing parking torque arm structure；
Fig. 3 is the schematic diagram of existing torque arm during the motion；
Fig. 4 is the stress diagram of existing parking torque arm structure；
Fig. 5 is stress diagram at the axis pin of existing parking torque arm structure；
Fig. 6 is parking torque arm structure provided in an embodiment of the present invention and signal when the first shoe plate and unmated the second shoe plate
Figure；
Fig. 7 is the schematic diagram of parking torque arm structure provided in an embodiment of the present invention；
Fig. 8 is the schematic diagram of torque arm provided in an embodiment of the present invention during the motion；
Fig. 9 is the stress diagram of parking torque arm structure provided in an embodiment of the present invention；
Figure 10 is the stress diagram at axis pin provided in an embodiment of the present invention.
It is marked in attached drawing：
11st, torque arm 111, first strut bar 12, strut 121, second strut bar
13rd, axis pin 14, left shoe plate 15,17, first perforation of the perforation of right shoe plate 16, second
18th, installing plate 21, the first shoe plate 22, the second shoe plate 31, transverse arm 32, vertical arm
33rd, hook formation 34, the second open slot 35, block 41, first clamping piece
42nd, second intermediate plate 43, limiting plate 44, the first open slot 45, the first installation sheet
46th, the second installation sheet 51, axis pin
Specific embodiment
In order to which those skilled in the art is made to more fully understand technical scheme of the present invention, below in conjunction with specific embodiment pair
This programme is further discussed in detail.
As shown in Fig. 6 to Figure 10, an embodiment of the present invention provides a kind of parking torque arm structure, including torque arm and strut,
For the first end of strut for fitting with the first shoe plate 21, the second end of strut is relatively set with the first installation sheet 45 and the
Two installation sheets 46；The connecting pin of torque arm is arranged between the first installation sheet 45 and the second installation sheet 46, the first installation sheet 45 and
Axis pin 51 is provided between two installation sheets 46, connecting pin is rotatablely connected with axis pin 51；Be provided on connecting pin for the second hoof
The pushing part that piece 22 fits.
Parking torque arm structure provided in an embodiment of the present invention, the connecting pin of torque arm pass through axis pin 51 and the first of strut and pacify
45 and second installation sheet 46 of load is rotatablely connected, when in use, can be there are two shear surface, i.e. the first installation sheet 45 on axis pin 51
And second be respectively formed a shear surface between installation sheet 46 and connecting pin, so as to effectively disperse the shearing that axis pin 51 is subject to
In power to two shear surfaces, preferably avoiding axis pin 51, there are one be easily bent deformation by shearing force is excessive during shear surface
Problem, and then greatly reduce the possibility that axis pin 51 occurs bending and deformation.
Further, first end can be provided with the first open slot 44, opening the first hoof of direction of the first open slot 44
Piece 21, the slot bottom of the first open slot 44 are used to fit with the first shoe plate 21.Due in the prior art in static state, parking torque arm
Structure can be acted on by the left and right shoe plate returning place force of Y-direction, but in X-direction, between having between strut and installing plate and shoe plate
Gap, entire parking torque arm structure, without constraint, are also easy to produce shaking, in addition during the motion, this is also easy to cause strut in X-direction
With installing plate dynamic interference.Using the program, due in X-direction, there is the cooperation of the first open slot 44 and the first shoe plate 21 realization
To the position-limiting action of parking torque arm structure so that strut is not likely to produce shaking, in addition during the motion, would not also cause to support
Bar and installing plate dynamic interference, so as to efficiently solve the above problem；Meanwhile first open slot 44 slot bottom and the first shoe plate
21 fit, it is achieved thereby that strut is contacted with the face of the first shoe plate 21, effectively increase compared with line of the prior art contacts
Big contact area, and since the pressure of motion process is increasing, so design can make the first shoe plate 21 and strut
The stress of contact position both is effectively prevented from excessive wear than more uniform, the service life both preferably extended.
In order to preferably be limited to strut and the parking torque arm structure, more effectively solve the above problems, even
The block 35 that is oppositely arranged and the mounting blocks for being connected with axis pin can be had by connecing end, and the is formed between mounting blocks and block 35
Two open slots 34, for the opening of the second open slot 34 towards the second shoe plate 22, pushing part is the bottom surface of the second open slot 34.Meanwhile
The bottom surface of second open slot 34 fits with the second shoe plate 22, and the face for realizing torque arm with the second shoe plate 22 contacts, and due to fortune
The pressure of dynamic process is increasing, and so design can make the stress ratio of the contact position of the second shoe plate 22 and torque arm more uniform,
So as to be effectively prevented from the two excessive wear, the service life of the two is preferably extended.
Further, can be connected between first end and the second end by first clamping piece 41 with second intermediate plate 42, the
One end of one intermediate plate 41 is connected with the first installation sheet 45, the other end of first clamping piece 41 and the first connecting plate phase of first end
Even, one end of second intermediate plate 42 is connected with the second installation sheet 46, the second connection of the other end and first end of second intermediate plate 45
Plate is connected；There is accommodation space between first clamping piece 41 and second intermediate plate 42；Torque arm includes transverse arm 31 and vertical arm 32, and transverse arm 31 is set
It puts in accommodation space, the extending direction of transverse arm 31 is identical with the extending direction of accommodation space, and vertical arm 32 is to far from accommodation space
Direction extension；One end of transverse arm 31 is connecting pin, and the other end of transverse arm 31 is connected with vertical arm 32.Using the program, effectively
The weight of strut is reduced, meanwhile, a part, that is, transverse arm 31 of pull rod is placed in accommodation space, can relatively efficiently reduce drawing
The vertical distance between the point of application and rotation center, that is, axis pin on arm, so as to be cut to more effectively lower that axis pin 51 is subject to
Shear force is very useful.It is understood that first clamping piece 41 is identical with the extending direction of the first installation sheet 45, second intermediate plate 42 with
The extending direction of second installation sheet 46 is identical, and the space between accommodation space and the first installation sheet 45 and the second installation sheet 46 is connected
It is logical；Point of application one end far from transverse arm 31 in vertical arm 32.As shown in Fig. 9 to Figure 10, with reference to stress sketch, force analysis is such as
Under：
F ' * La=Fb*Lb；
F ' * (La+Lb)=Fa*Lb.
Obtain Fb=F ' * La/Lb, Fa=F ' * (La+Lb)/Lb.Wherein, F ' is applied force, and La represents applied force and torque arm
Vertical distance between the upper position being in contact with the second shoe plate, Lb represent the position being in contact in torque arm with the second shoe plate and pin
It is vertical away from Fa is the power for strutting the second shoe plate, and Fb is the power for strutting the first shoe plate between axis.Compared with prior art, herein
Assuming that the lever ratio of torque arm is consistent, and the input power of torque arm is consistent, then F '=F, La=L1, Lb=L2, then Fb=F*L1/L2,
Less than F1=F* of the prior art (L1+L2)/L2.In addition, since the first installation sheet of strut the second end and second are installed
Piece is rotatablely connected by axis pin and torque arm, then the shear stress σ ' that axis pin is subject to=(Fb/2)/S=(F*L1/L2)/2S ＜ σ/2,
It can be seen that compared with prior art, the stressing conditions of axis pin 51 significantly improve at this time, so as to reduce the abrasion of axis pin 51 and bending, carry
Rise its service life.Simultaneously as Fa ＞ Fb, it is seen that the power that is subject to of neck hoof is more than the power being subject to from hoof, for neck from shoe type system
Dynamic device structure, the power that neck hoof is subject to, which is more than than can be than reverse effect to the utilization of the efficiency of brake from the power that hoof is subject to, gets well.
In order to conveniently realize the connection of torque arm and force application part, one end far from transverse arm 31 can be set in vertical arm 32
It is equipped with hook formation 33.
Specifically, transverse arm 31, vertical arm 32 and hook formation 33 can form integral structure, so that torque arm
Intensity be further improved, while greatly extend the service life of torque arm.
As shown in Figure 6 and Figure 7, the side far from hook formation 33 can pass through limiting plate 43 and second in first clamping piece 41
The side far from hook formation 33 is connected on intermediate plate 42, and limiting plate 43 is set close to the second end, so as to pass through 43 energy of limiting plate
Enough preferably realize limits the movement of transverse arm 31.
In order to effectively improve the intensity of strut, limiting plate 43 can be with shape with first clamping piece 41 and second intermediate plate 43
Integrated structure.
Parking torque arm structure provided in an embodiment of the present invention, when pulling torque arm to the left, torque arm is rotated around axis pin 51, is drawn
The bottom surface of the second open slot 34 on arm contacts the second shoe plate 22, and the second shoe plate 22 is pushed to swing to the left, simultaneously because anti-make
Firmly, 51 junction of axis pin moves right, so as to which strut be pushed to move right, eventually by the first open slot 44 on strut
Slot bottom pushes the first shoe plate 21 to move right, until the first shoe plate 21 and the second shoe plate 22 fit closely to generate with brake drum
Brake force realizes braking.
It the above is only the preferred embodiment of the present invention, it should be pointed out that these embodiments are merely to illustrate the present invention
Rather than limit the scope of the invention, moreover, after present disclosure has been read, relevant technical staff in the field can be with
Various changes or modification are made to the present invention, such equivalent forms equally fall into the model that the application the appended claims are limited
It encloses.
Claims (8)
1. a kind of parking torque arm structure, including torque arm and strut, which is characterized in that the first end of the strut is used for and the
One shoe plate fits, and the second end of the strut is relatively set with the first installation sheet and the second installation sheet；The company of the torque arm
End is connect to be arranged between first installation sheet and second installation sheet, first installation sheet and second installation sheet it
Between be provided with axis pin, the connecting pin is rotatablely connected with the axis pin；Be provided on the connecting pin for the second shoe plate phase
The pushing part of fitting.
2. parking torque arm structure according to claim 1, which is characterized in that the first end is provided with the first opening
Slot, towards first shoe plate, the slot bottom of first open slot is used for and first hoof opening of first open slot
Piece fits.
3. parking torque arm structure according to claim 2, which is characterized in that the connecting pin has the block being oppositely arranged
With the mounting blocks for being connected with the axis pin, the second open slot is formed between the mounting blocks and the block, described second
For the opening of open slot towards second shoe plate, the pushing part is the bottom surface of second open slot.
4. parking torque arm structure according to any one of claims 1 to 3, which is characterized in that the first end and described
It is connected between the second end by first clamping piece with second intermediate plate, one end of the first clamping piece and the first installation sheet phase
Even, the other end of the first clamping piece is connected with the first connecting plate of the first end, one end of the second intermediate plate and institute
It states the second installation sheet to be connected, the other end of the second intermediate plate is connected with the second connecting plate of the first end；Described first
There is accommodation space between intermediate plate and the second intermediate plate；The torque arm includes transverse arm and vertical arm, and the transverse arm is arranged on described
In accommodation space, the extending direction of the transverse arm is identical with the extending direction of the accommodation space, and the vertical arm is to far from described
The direction extension of accommodation space；One end of the transverse arm is the connecting pin, and the other end of the transverse arm is connected with the vertical arm.
5. parking torque arm structure according to claim 4, which is characterized in that one end far from the transverse arm in the vertical arm
It is provided with hook formation.
6. parking torque arm structure according to claim 5, which is characterized in that the transverse arm, the vertical arm and the hook
Shape structure forms integral structure.
7. parking torque arm structure according to claim 5, which is characterized in that far from the hook-shaped knot in the first clamping piece
The side of structure is connected by limiting plate with the side far from the hook formation in the second intermediate plate, and the limiting plate is close to institute
State the second end setting.
8. parking torque arm structure according to claim 7, which is characterized in that the limiting plate and the first clamping piece and
The second intermediate plate forms integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214314.XA CN108223628A (en) | 2018-03-15 | 2018-03-15 | A kind of parking torque arm structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214314.XA CN108223628A (en) | 2018-03-15 | 2018-03-15 | A kind of parking torque arm structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108223628A true CN108223628A (en) | 2018-06-29 |
Family
ID=62659504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810214314.XA Pending CN108223628A (en) | 2018-03-15 | 2018-03-15 | A kind of parking torque arm structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108223628A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242746A (en) * | 2019-07-23 | 2019-09-17 | 霸州市华诚汽车制动器有限公司 | A kind of parking brake |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020117367A1 (en) * | 2001-02-23 | 2002-08-29 | Takashi Ikeda | Brake cable connecting apparatus for drum brake |
| JP2008180317A (en) * | 2007-01-25 | 2008-08-07 | Akebono Brake Ind Co Ltd | Parking brake mechanism |
| US20120234640A1 (en) * | 2011-03-18 | 2012-09-20 | Yu Don Jung | Electric parking brake system |
| CN203500329U (en) * | 2013-08-28 | 2014-03-26 | 浙江诸暨万宝机械有限公司 | Drum brake capable of preventing shoe sheet from jumping in radial direction |
| CN204432643U (en) * | 2015-01-29 | 2015-07-01 | 长城汽车股份有限公司 | For the force transfer mechanism of drg, drg and vehicle |
-
2018
- 2018-03-15 CN CN201810214314.XA patent/CN108223628A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020117367A1 (en) * | 2001-02-23 | 2002-08-29 | Takashi Ikeda | Brake cable connecting apparatus for drum brake |
| JP2008180317A (en) * | 2007-01-25 | 2008-08-07 | Akebono Brake Ind Co Ltd | Parking brake mechanism |
| US20120234640A1 (en) * | 2011-03-18 | 2012-09-20 | Yu Don Jung | Electric parking brake system |
| CN203500329U (en) * | 2013-08-28 | 2014-03-26 | 浙江诸暨万宝机械有限公司 | Drum brake capable of preventing shoe sheet from jumping in radial direction |
| CN204432643U (en) * | 2015-01-29 | 2015-07-01 | 长城汽车股份有限公司 | For the force transfer mechanism of drg, drg and vehicle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242746A (en) * | 2019-07-23 | 2019-09-17 | 霸州市华诚汽车制动器有限公司 | A kind of parking brake |
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Application publication date: 20180629 |
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