CN208469778U - Electric booster braking device with treadle assembly travel feedback mechanism - Google Patents
Electric booster braking device with treadle assembly travel feedback mechanism Download PDFInfo
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- CN208469778U CN208469778U CN201820749248.1U CN201820749248U CN208469778U CN 208469778 U CN208469778 U CN 208469778U CN 201820749248 U CN201820749248 U CN 201820749248U CN 208469778 U CN208469778 U CN 208469778U
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- treadle
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- sliding sleeve
- brake pump
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Abstract
The utility model discloses a kind of electric booster braking devices with treadle assembly travel feedback mechanism, it include power-assisted cylinder body, treadle assembly, treadle reset spring, Electric booster and brake pump assembly, the brake pump mandril for receiving brake force is provided on the brake pump assembly, the Electric booster includes power-assisted sliding sleeve, the power-assisted sliding sleeve and the ejection of brake pump mandril cooperates, the electric-powered assembly includes motor, and the retarder with motor output shaft linkage, gear shaft is linkedly set on the output shaft of the retarder, the outer wall side of the power-assisted sliding sleeve is provided with the driving rack connecting with gear spindle drive, it further include having treadle assembly travel feedback mechanism, one end of feedback gear axis is provided with the angular position sensor for detecting feedback gear axis rotational angle.The utility model advantage is structure setting rationally and treadle assembly travel feedback output stability is reliable.
Description
Technical field
The utility model relates to automobile brake accessories, specifically refer to electric booster braking device, particularly relate to have and step on
The electric booster braking device of bar assembly travel feedback mechanism, can be used for electric car, hybrid vehicle, pilotless automobile
Or the fields such as intelligent driving automobile.
Background technique
The braking system of traditional combustion engine automobile mostly uses vacuum booster unit greatly to assist driver to generate enough systems
Power, and vacuum source is from engine or oil-sealed rotary pump.For new-energy automobile (fuel cell car and pure electric vehicle)
For, no engine provides brake boost to provide vacuum power source, and only the brake force as caused by manpower is can not to expire
The demand of sufficient service brake.Electric booster braking device can be very good to meet this demand.
For this purpose, the applicant's earlier application utility model and utility model patent of electric booster braking device, referring to
Chinese Patent Application No. 2016110854500, Chinese Patent Application No. 2017219208636, the structure of technical solution include
There are power-assisted cylinder body, treadle assembly, treadle reset spring, Electric booster and brake pump assembly, is set on the brake pump assembly
It is equipped with the brake pump mandril for receiving brake force, the Electric booster includes electric-powered assembly, slides to be set to and help
The power-assisted sliding sleeve of sliding driving force is provided in power cylinder body and by electric-powered assembly, the power-assisted sliding sleeve is pushed away with brake pump mandril
Top cooperation.Very well solves the above problem.
But utility model people continues to find in research process, the technical side for the electric booster braking device formerly researched and developed
Case there is problems:
Its treadle assembly slide stroke can not direct feedback output because corresponding control electricity can not be removed according to the trip signal
The movement of dynamic booster and brake pump assembly, and it is limited to that components in electric booster braking device are numerous, and installation space is small,
The travel switch for detecting treadle assembly is mounted directly in electric booster braking device, arrangement of mechanism is difficult, and stability is not
It is good
It is therefore proposed that this item improved technology scheme.
Utility model content
The purpose of the utility model is to overcome the disadvantages existing in the prior art and insufficient, and provides a kind of structure setting
Rationally and treadle assembly travel feedback output stability reliably has the electric booster braking of treadle assembly travel feedback mechanism
Device.
For first purpose for realizing the utility model, the technical solution of the utility model be include power-assisted cylinder body, step on
Bar assembly, treadle reset spring, Electric booster and brake pump assembly are provided on the brake pump assembly for receiving system
The brake pump mandril of power, the Electric booster include that electric-powered assembly, sliding are set in servo-cylinder body and by electricity
Dynamic power assembly provides the power-assisted sliding sleeve of sliding driving force, and the power-assisted sliding sleeve and the ejection of brake pump mandril cooperate, described
Electric-powered assembly includes motor and the retarder with motor output shaft linkage, links and sets on the output shaft of the retarder
It is equipped with gear shaft, it further includes having that the outer wall side of the power-assisted sliding sleeve, which is provided with the driving rack connecting with gear spindle drive,
Treadle assembly travel feedback mechanism, the treadle assembly travel feedback mechanism include that linkage is fixedly installed on treadle assembly simultaneously edge
The treadle rack gear of treadle assembly stroke directions distribution and rotation are provided on power-assisted cylinder body and engage with treadle rack-driving and match
The feedback gear axis of conjunction, one end of the feedback gear axis are provided with the angle position for detecting feedback gear axis rotational angle
Set sensor.
By this setting, treadle rack gear is set on treadle assembly, and is driven engagement therewith by feedback gear axis, then
The rotational angle of feedback gear axis is detected by angular position sensor, and then can be exported and treadle rack gear shift motion phase
Corresponding travel feedback signal, the as travel feedback signal of treadle assembly, can be in controller by the trip feedback signal
It controls and cooperates under (such as automobile ECU) with the Electric booster and brake pump assembly of electric booster braking device, application prospect
Extensively, scalability is good.
It includes treadle mandril that further setting, which is treadle assembly, and linkage, which is fixedly installed, on the treadle mandril is located at
Treadle rack gear pedestal in power-assisted sliding sleeve, another side of the outer wall of the power-assisted sliding sleeve relative to driving rack side
Bar shape trench hole is offered, the treadle rack gear is set to the side that treadle rack gear pedestal corresponds to the bar shape trench hole, feeds back tooth
The driving gear of wheel shaft go deep into power-assisted sliding sleeve from bar shape trench hole and with the treadle rack gear engaged transmission on treadle rack gear pedestal.It is logical
This setting is crossed, provides that a kind of structure setting is simple, and stable transmission is reliable, angle signal exports stable implementation.
Further setting is that one end coaxial linkage of feedback gear axis is fixedly installed non-magnetic guide rod, the non-magnetic guide rod
Outer end face be coaxially fixedly installed sensor magnet, the angular position sensor is set on the outside of sensor magnet, and the angle
Degree position sensor includes to match the Hall core for merging detection sensor magnet rotational angle with the sensor magnet mutual induction
Piece.By this setting, be transmitted to power-assisted cylinder interior using the magnetism of non-magnetic guide rod shielding sensor magnet, prevent its magnetize and
It influences to work normally, in addition, the structure directly detects sensor magnet using Hall chip, accessory source is wide, easy to implement reliable.
It is planetary reducer that further setting, which is the retarder,.
By this setting, mechanical efficiency can be effectively improved, and reduces produced vibration and noise when transmission.
Further setting is that axially extending bore is provided in the power-assisted sliding sleeve, and guiding is provided on the outer wall of power-assisted sliding sleeve
Notch, the treadle assembly sliding are set in the axially extending bore in power-assisted sliding sleeve, and treadle reset spring is set to axial logical
Couple in hole and with the head end elastic reset of treadle assembly, is further fixedly arranged on the power-assisted cylinder body and is inserted by guiding slot port
Reset spring positioning pin in axially extending bore, it is fixed that the outer end elastic spacing of the treadle reset spring is supported in reset spring
On the pin of position, and power-assisted sliding sleeve does axial sliding by its guiding slot port and reset spring positioning pin and cooperates, reset spring positioning pin
On be provided with head end for treadle assembly axially across positioning pin through-hole, the head end of the treadle assembly axially to
The outer end of positioning pin through-hole and the axially extending bore in power-assisted sliding sleeve is sequentially passed through in the slipping of brake pump mandril direction and is pushed away
Top acts on brake pump mandril.
By this setting, the transmission process that treadle assembly acts on brake pump mandril is slided with Electric booster by power-assisted
The transmission process that set acts on brake pump mandril mutually decouples setting, and in the structure setting, in this way, in braking, it is electronic
Booster passes through power-assisted sliding sleeve first and first applies brake force in brake pump mandril, and brake pump mandril is pushed to make piston motion, makes
Brake pump assembly output brake pressure oil is rotated, when there is Electric booster failure, then the head end of treadle assembly
It sequentially passes through the outer end of positioning pin through-hole and the axially extending bore in power-assisted sliding sleeve and ejection acts on brake pump mandril, carry out
Pedal brake, and since its pedal brake is mutually decoupled with electric booster braking, pedal brake dynamic braking response is fast, and brake force is wanted
It asks low, improves the safety of vehicle braking.
Further setting is that the treadle reset spring correspond to the side of reset spring positioning pin and is provided with spring pocket, this
The outer end limited support of spring pocket is positioned at the inner end of reset spring positioning pin, and the center of the spring pocket is arranged for treadle assembly head
Hold across spring pocket centre bore.By this setting, convenient that the outer end of treadle reset spring is positioned and supported, structure is set
Meter is reasonable.
It includes twin-stage Cylinder for Parallel Connection that further setting, which is the brake pump assembly, and brake pump top rod driving is set to
The input terminal of twin-stage Cylinder for Parallel Connection.
Further setting is that the input terminal of the brake pump mandril is linkedly set with brake pump mandril input linkage board, institute
The axial outer end face ejection for the power-assisted sliding sleeve stated is supported on brake pump mandril input linkage board, and the input linkage of brake pump mandril
The center of plate is fixedly installed the cushion block of the cooperation of the head end ejection with treadle assembly.By this setting, so that power-assisted sliding sleeve
The drive mechanism that the head end of the drive mechanism and pedal assembly that act on brake pump mandril acts on brake pump mandril is mutually arranged
Without interruption, rationally distributed, stable transmission.
It is variable rate spring that further setting, which is the treadle reset spring, and the stiffness coefficient of the variable rate spring is from stepping on
One end that bar reset spring corresponds to treadle assembly is gradually incremented by setting to correspondence one end of reset spring positioning pin.
By this setting, treadle reset spring is when treadle assembly is ridden, for providing footbrake to driver
Analog feedback power foot-operated feedback force can be preferably provided, orthodox car foot is simulated and by this setting variable rate spring
Step on the validity of brake.
In conclusion the utility model has the advantages that: have the function of treadle assembly stroke sensing feedback output, and structure is set
Set reliable and stable, stable transmission is reliable, and treadle brake force is mutually decoupled with electric booster braking power, pedal brake dynamic braking
Response is fast, and required braking force is low, improves the safety of vehicle braking.In addition, also having stable drive, low noise.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, obtains other drawings based on these drawings the scope for still falling within the utility model.
Fig. 1 the utility model embodiment structural schematic diagram；
Fig. 2 the utility model embodiment A-A partial structural diagram；
Fig. 3 the utility model embodiment B-B structural schematic diagram；
Fig. 4 the utility model embodiment local cutting schematic diagram on power-assisted cylinder body；
The matching relationship of Fig. 5 the utility model embodiment treadle assembly travel feedback mechanism and its associated mechanism is three-dimensional
Figure；
Fig. 6 is the main view of Fig. 3；
Fig. 7 is the C-C cross-sectional view of Fig. 6；
Fig. 8 is the utility model partial structural diagram；
Fig. 9 is the decomposition diagram of Fig. 8；
Figure 10 is the decomposition diagram at another visual angle of Fig. 8；
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type is described in further detail.
It should be noted that all statements for using " first " and " second " are for area in the utility model embodiment
Be divided to two non-equal entities of same names or non-equal parameter, it is seen that " first " " second " only for statement convenience,
It should not be construed as the restriction to the utility model embodiment, subsequent embodiment no longer illustrates this one by one.
The direction and position term that the utility model is previously mentioned, for example, "upper", "lower", "front", "rear", "left", "right", "
It is interior ", "outside", " top ", " bottom ", " side " etc., be only the direction or position with reference to attached drawing.Therefore, the direction and position used
Setting term is rather than the limitation to scope of protection of the utility model to illustrate and understand the utility model.
As shown in Figures 1 to 10, in the utility model embodiment, to include that power-assisted cylinder body 1, treadle assembly 2, treadle are multiple
Position spring 3, Electric booster 4 and brake pump assembly 5 are provided with the system for receiving brake force on the brake pump assembly 5
Dynamic pump mandril 51, the Electric booster 4 are set in power-assisted cylinder body 1 including electric-powered assembly, sliding and by electronic dynamic
Power assembly provides the power-assisted sliding sleeve 41 of sliding driving force, and the power-assisted sliding sleeve 41 and 51 ejection of brake pump mandril cooperate.
Electric-powered assembly described in the present embodiment includes motor 42 and the retarder with motor output shaft linkage
43。
Retarder described in the present embodiment is planetary reducer, and structure can be referring specifically to the applicant's earlier application
Electric booster braking device in retarder setting, specially Chinese Patent Application No.: ZL2017219208636: can also be with
Using other general in the market planetary reducers based on planetary gear speed-reduction.
In addition, gear shaft 44 is linkedly set on the output shaft 48 of the present embodiment retarder, the power-assisted sliding sleeve 41
Outer wall side be provided with gear shaft 44 be sequentially connected driving rack 413, further include having treadle assembly travel feedback mechanism,
The treadle assembly travel feedback mechanism includes that linkage is fixedly installed on treadle assembly 2 and along 2 stroke directions of treadle assembly point
The treadle rack gear 61 of cloth and rotation are provided on power-assisted cylinder body 1 and are driven the feedback gear for engaging cooperation with treadle rack gear 61
Axis 62, one end of the feedback gear axis 62 are provided with the angular position sensing for detecting 62 rotational angle of feedback gear axis
Device 63.The utility model angular position sensor 63 can be used that angle displacement sensor or Hall sensor etc. are any to be examined
Survey the electronic sensing devices of 62 rotational angle of feedback gear axis.
The present embodiment is specifically configured to:
Treadle assembly 2 includes treadle mandril 21, and linkage is fixedly installed sliding positioned at power-assisted on the treadle mandril 21
Treadle rack gear pedestal 22 in set 41, the outer wall of the power-assisted sliding sleeve 41 is relative to the another of 413 side of driving rack
Side offers bar shape trench hole 414, and the treadle rack gear 61 is set to the corresponding bar shape trench hole 414 of treadle rack gear pedestal 22
Side, the driving gear 621 of feedback gear axis 62 go deep into power-assisted sliding sleeve 41 from bar shape trench hole 414 and with treadle rack gear pedestal
61 engaged transmission of treadle rack gear on 22.
In addition, one end coaxial linkage of feedback gear axis 62 is fixedly installed non-magnetic guide rod 64, the non-magnetic guide rod 64
Outer end face be coaxially fixedly installed sensor magnet 65, the angular position sensor 63 is set to 65 outside of sensor magnet,
And the angular position sensor 63 includes to match to merge detection sensor magnet rotational angle with the sensor magnet mutual induction
Hall chip 631.Angular position sensor based on Hall chip 631 is the electrical sensing accessory of this field maturation, for this
Field routine techniques, working principle the present embodiment are no longer described in detail, can be directly from market purchasing application.
In addition, being provided with axially extending bore 411 in power-assisted sliding sleeve 41 described in the present embodiment, set on the outer wall of power-assisted sliding sleeve 41
It is equipped with guiding slot port 412, the front end of the treadle assembly 2 slides in the axially extending bore 411 being set in power-assisted sliding sleeve 41,
Treadle reset spring 3 is set in axially extending bore 411 and couples with 21 elastic reset of treadle mandril of treadle assembly 2, described to help
The reset spring positioning pin 11 being inserted into axially extending bore by guiding slot port 412 is further fixedly arranged on power cylinder body 1, it is described
The outer end elastic spacing of treadle reset spring 3 be supported on reset spring positioning pin 11, and power-assisted sliding sleeve 41 passes through it and is oriented to
Notch 412 and reset spring positioning pin 11 do axial sliding and cooperate, and are provided on reset spring positioning pin 11 for treadle assembly
Head end axially across positioning pin through-hole 111, the head end of the treadle assembly 2 is axially to 51 side of brake pump mandril
The outer end of the axially extending bore 411 in positioning pin through-hole 111 and power-assisted sliding sleeve 41 is sequentially passed through into slipping and ejection is made
For brake pump mandril 51.
In addition, the side of the corresponding reset spring positioning pin 11 of the treadle reset spring 3 is provided with spring pocket 12, it should
The outer end limited support of spring pocket 12 is positioned at the inner end of reset spring positioning pin 11, and the center setting of the spring pocket 12 is for stepping on
The spring pocket centre bore 121 that bar assembly head end passes through.
In addition, brake pump assembly 5 described in the present embodiment includes twin-stage Cylinder for Parallel Connection, brake pump mandril 51 is driven
It is set to the input terminal of twin-stage Cylinder for Parallel Connection.Twin-stage Cylinder for Parallel Connection 52 is the mature accessory of this field, and the present embodiment is no longer
It is described in detail.
In addition, the input terminal of the brake pump mandril 51 is linkedly set with brake pump mandril input linkage board 53, it is described
Power-assisted sliding sleeve 41 the ejection of axial outer end face be supported in brake pump mandril input linkage board 53 on.
Treadle reset spring 3 described in the present embodiment is variable rate spring, and the stiffness coefficient of the variable rate spring is from treadle
One end of the corresponding treadle assembly 2 of reset spring 3 is gradually incremented by setting to correspondence one end of reset spring positioning pin 11.
Above disclosures are merely preferred embodiments of the utility model, the utility model cannot be limited with this certainly
Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.
Claims (9)
1. a kind of electric booster braking device with treadle assembly travel feedback mechanism, include power-assisted cylinder body, treadle assembly,
Treadle reset spring, Electric booster and brake pump assembly are provided with for receiving brake force on the brake pump assembly
Brake pump mandril, the Electric booster include that electric-powered assembly, sliding are set in servo-cylinder body and by electric-powered
Assembly provides the power-assisted sliding sleeve of sliding driving force, and the power-assisted sliding sleeve and the ejection of brake pump mandril cooperate, and described is electronic dynamic
Power assembly includes motor and the retarder with motor output shaft linkage, is linkedly set with tooth on the output shaft of the retarder
The outer wall side of wheel shaft, the power-assisted sliding sleeve is provided with the driving rack connecting with gear spindle drive, it is characterised in that: also wraps
Treadle assembly travel feedback mechanism is included, which includes that linkage is fixedly installed on treadle assembly
And treadle rack gear along the distribution of treadle assembly stroke directions and rotation are provided on power-assisted cylinder body and nibble with treadle rack-driving
The feedback gear axis of cooperation is closed, one end of the feedback gear axis is provided with the angle for detecting feedback gear axis rotational angle
Spend position sensor.
2. electric booster braking device according to claim 1, it is characterised in that: treadle assembly includes treadle mandril,
It links on the treadle mandril and is fixedly installed the treadle rack gear pedestal in power-assisted sliding sleeve, outside the power-assisted sliding sleeve
Wall offers bar shape trench hole relative to the another side of driving rack side, and the treadle rack gear is set to treadle rack gear
Pedestal corresponds to the side of the bar shape trench hole, the driving gear of feedback gear axis go deep into power-assisted sliding sleeve from bar shape trench hole and with step on
Treadle rack gear engaged transmission on bar rack gear pedestal.
3. electric booster braking device according to claim 1 or 2, it is characterised in that: one end of feedback gear axis is coaxial
Linkage is fixedly installed non-magnetic guide rod, and the outer end face of the non-magnetic guide rod is coaxially fixedly installed sensor magnet, the angle
Degree position sensor is set on the outside of sensor magnet, and the angular position sensor includes and the sensor magnet phase mutual inductance
It should be with the Hall chip for merging detection sensor magnet rotational angle.
4. electric booster braking device according to claim 1, it is characterised in that: the retarder is planetary gear reduction
Fast device.
5. electric booster braking device according to claim 1, it is characterised in that: be provided with axis in the power-assisted sliding sleeve
To through-hole, guiding slot port is provided on the outer wall of power-assisted sliding sleeve, the treadle assembly slides the axis being set in power-assisted sliding sleeve
Into through-hole, treadle reset spring is set in axially extending bore and couples with the head end elastic reset of treadle assembly, the power-assisted
The reset spring positioning pin being inserted into axially extending bore by guiding slot port is further fixedly arranged on cylinder body, the treadle resets
The outer end elastic spacing of spring is supported on reset spring positioning pin, and power-assisted sliding sleeve is fixed by its guiding slot port and reset spring
Position pin does axial sliding cooperation, be provided on reset spring positioning pin head end for treadle assembly axially across positioning pin it is logical
Hole, the head end of the treadle assembly axially sequentially passed through into brake pump mandril direction slipping positioning pin through-hole and
Simultaneously ejection acts on brake pump mandril for the outer end of axially extending bore in power-assisted sliding sleeve.
6. electric booster braking device according to claim 5, it is characterised in that: the treadle reset spring is corresponding multiple
The side of position spring holder is provided with spring pocket, and the outer end limited support of the spring pocket is positioned at the interior of reset spring positioning pin
The spring pocket centre bore passed through for treadle assembly head end is arranged in end, the center of the spring pocket.
7. electric booster braking device according to claim 5, it is characterised in that: the brake pump assembly includes double
Grade Cylinder for Parallel Connection, brake pump top rod driving are set to the input terminal of twin-stage Cylinder for Parallel Connection.
8. electric booster braking device according to claim 5, it is characterised in that: the input terminal of the brake pump mandril
It is linkedly set with brake pump mandril input linkage board, the axial outer end face ejection of the power-assisted sliding sleeve is supported in brake pump mandril
It inputs on linkage board, and the center of brake pump mandril input linkage board is fixedly installed the cooperation of the head end ejection with treadle assembly
Cushion block.
9. electric booster braking device according to claim 5, it is characterised in that: the treadle reset spring is to become rigid
Spend spring, the stiffness coefficient of the variable rate spring corresponds to one end of treadle assembly to reset spring positioning pin from treadle reset spring
Correspondence one end gradually be incremented by setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820749248.1U CN208469778U (en) | 2018-05-18 | 2018-05-18 | Electric booster braking device with treadle assembly travel feedback mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820749248.1U CN208469778U (en) | 2018-05-18 | 2018-05-18 | Electric booster braking device with treadle assembly travel feedback mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN208469778U true CN208469778U (en) | 2019-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820749248.1U Active CN208469778U (en) | 2018-05-18 | 2018-05-18 | Electric booster braking device with treadle assembly travel feedback mechanism |
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| CN (1) | CN208469778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422990A (en) * | 2018-05-18 | 2018-08-21 | 浙江三星机电股份有限公司 | Electric booster braking device with treadle assembly travel feedback mechanism |
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2018
- 2018-05-18 CN CN201820749248.1U patent/CN208469778U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108422990A (en) * | 2018-05-18 | 2018-08-21 | 浙江三星机电股份有限公司 | Electric booster braking device with treadle assembly travel feedback mechanism |
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