CN202508072U - Pedal simulation device - Google Patents
Pedal simulation device Download PDFInfo
- Publication number
- CN202508072U CN202508072U CN 201220095106 CN201220095106U CN202508072U CN 202508072 U CN202508072 U CN 202508072U CN 201220095106 CN201220095106 CN 201220095106 CN 201220095106 U CN201220095106 U CN 201220095106U CN 202508072 U CN202508072 U CN 202508072U
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- pedal
- cavity
- brake
- piston
- push rod
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Abstract
The utility model discloses a pedal simulation device, and aims to provide a pedal simulation device which has a good response to the pedal reacting force and can correspondingly supply proper pedal reacting force along with the change of a tread travel of a brake pedal. The pedal simulation device comprises a brake pedal, wherein a travel sensor is arranged on the brake pedal; a tread simulator is arranged on the brake pedal and comprises a cylinder body and a piston arranged in the cylinder body; a simulator push rod is connected with the piston and the brake pedal; the cylinder body comprises a first cavity in which the simulator push rod is positioned and a second cavity positioned on the other side of the piston; a resetting spring is arranged in the second cavity; a first brake passageway is respectively connected with the first cavity and the second cavity through a hydraulic passageway between a brake pump and a wheel brake.
Description
Technical field
The utility model relates to the automobile brake field, is specifically related to the pedal analog machine in a kind of brake system of car that is applied to be made up of jointly electron steering and hydraulic efficiency pressure system.
Background technology
Along with the development of electron controls technology, the brake system of automobile has also been used electron controls technology gradually, to realize brake-by-wire.At present common a kind of brake-by-wire structure is applied to electron steering in the hydraulic efficiency pressure system as follows, and the action through one stroke sensor brake pedal also passes the signal along to electronic control unit; Be controlled by an electronic control unit the brake pump work in the hydraulic efficiency pressure system, brake pump is given car side brake through its hydraulic path that is communicated with car side brake with brake-force transmission, thereby realizes brake-by-wire.This type line control brake system can be realized brake operatings such as brake operation partial sum car side brake such as brake pedal are partly separated, and what in braking procedure, produce makes us unjoyful vibration and can not be delivered on the brake pedal; But because brake operatings such as brake pedal and car side brake partly separate, it is constant always and resistance is very little to trample the resistance that receives in the process of brake pedal at chaufeur.Therefore, the pedal analog machine need be set certain pedal reaction force is passed to chaufeur, thereby driver assistance person carries out brake operating.Present pedal analog machine generally is through spring installation pedal reaction force to be provided.Further; For example, Chinese patent publication number CN101274623, open day on October 01st, 2008; The name that utility model is created is called motor vehicle braking system; This application case discloses a kind of motor vehicle braking system, and the pedal of this motor vehicle braking system is provided with analog machine, and analog machine is that brake pedal applies the antagonistic force corresponding to the brake pedal shift motion through a plurality of springs.Though this type provides the analog machine of pedal reaction force simple in structure through spring installation, its simulation to trample true effect not good, can not change and suitable pedal reaction force is provided accordingly along with the trampling stroke of chaufeur brake pedal.
The utility model content
The purpose of the utility model be for overcome the simulation of existing pedal analog machine to trample true effect not good; Can not be along with brake pedal trampling that stroke changes and problem that suitable pedal reaction force is provided accordingly; Provide a kind of pedal reaction force had good response, can be along with brake pedal trampling that stroke changes and pedal analog machine that suitable pedal reaction force is provided accordingly.
The technical scheme of the utility model is:
A kind of pedal analog machine comprises brake pedal, and brake pedal is provided with stroke sensor, and said brake pedal is provided with tramples simulator, tramples simulator and comprises a cylinder body and be arranged on the piston in the cylinder body; One simulator push rod connects piston and brake pedal; Cylinder body comprises first cavity at simulator push rod place and is positioned at second cavity of piston opposite side, is provided with retracing spring in second cavity; One first braking path is by being connected first cavity and second cavity respectively on the hydraulic path between brake pump and the car side brake.The braking that this programme produces brake pump through the first braking path is pressed and is connected in first cavity and second cavity; Because piston one side in the cylinder body is provided with the simulator push rod; Make the piston cross-section that contacts with second cavity long-pending long-pending greater than the piston cross-section that contacts with first cavity; Therefore when chaufeur was trampled brake pedal, piston can provide an antagonistic force to brake pedal through the simulator push rod.And based in the line control brake system that this electron-like is controlled with hydraulic efficiency pressure system combines, it is respective change along with the trampling stroke of brake pedal that the braking that brake pump provided is pressed; When brake pedal trample stroke when big more, also corresponding big more characteristics are pressed in the braking that the electronic control unit controls brake pump produces; Therefore the pedal analog machine of this programme can provide suitable pedal reaction force accordingly along with the trampling the stroke variation of brake pedal; When brake pedal trample stroke when big more, piston can be also big more accordingly to the antagonistic force that brake pedal provides through the simulator push rod.After chaufeur discharged brake pedal, the pedal analog machine can reset under the effect of retracing spring.
As preferably, the long-pending B of the piston cross-section that contacts with first cavity amasss A less than the piston cross-section that contact with second cavity.Because the long-pending B of the piston cross-section that contacts with first cavity is less than the long-pending A of the piston cross-section that contacts with second cavity, therefore when chaufeur was trampled brake pedal, piston can provide an antagonistic force to brake pedal through the simulator push rod.
As preferably, brake pedal is provided with a pedal push rod, and said simulator push rod end is provided with a ball recess, and said pedal push rod end is provided with a bulb with respect to ball recess, and said bulb is located in the ball recess.Can guarantee that through this programme structure chaufeur tramples in the process of brake pedal, pedal push rod and simulator push rod can keep excellent contact, and the counteraction that makes the pedal analog machine provide can be delivered on the brake pedal.
As preferably, the end face of cylinder body is provided with a stepped hole, and the bore of stepped hole is reduced toward interior by open end gradually, and the stepped hole open end is provided with end cover; Piston is located in the stepped hole between end cover and the stepped hole step; Said second cavity is located between end cover and the piston, and said first cavity is located between piston and the stepped hole bottom surface; Said stepped hole step is provided with first inlet opening that is communicated with first cavity with cylinder body between the stepped hole bottom surface, and said end cover is provided with second inlet opening that is communicated with second cavity with cylinder body between the piston.Because first inlet opening is arranged on the cylinder body between stepped hole step and the stepped hole bottom surface; Piston is located in the stepped hole between end cover and the stepped hole step simultaneously; Can avoid after chaufeur discharges brake pedal; Under the effect of retracing spring, first inlet opening is stopped up, guarantee that first inlet opening and second inlet opening are positioned at the piston both sides.
As preferably, the piston side relative with second cavity is provided with a push rod, and the length of said push rod is greater than the axial distance between second inlet opening and the end cover medial surface.In the time of can avoiding chaufeur to trample the brake pedal piston through this programme structure, piston stops up second inlet opening, guarantees that first inlet opening and second inlet opening are positioned at the piston both sides.
As preferably, the first braking path comprise and brake pump and car side brake between hydraulic path bonded assembly overall channel and respectively with first inlet opening and the second inlet opening bonded assembly bypass passage.
The beneficial effect of the utility model is: pedal reaction force is had good response, can suitable pedal reaction force be provided accordingly along with the trampling the stroke variation of brake pedal.
Description of drawings
Fig. 1 is a kind of principle of work scheme drawing of the utility model.
Fig. 2 is a kind of structural representation of trampling the simulator place in the utility model.
Among the figure: brake pedal 1, stroke sensor 2, trample that simulator 3, cylinder body 4, piston 5, simulator push rod 6, first cavity 7, second cavity 8, pedal push rod 9, the first braking path 10, electronic control unit 11, braking liquid irritate 12, brake pump 13, hydraulic path 14, car side brake 15, retracing spring 16, end cover 17, first inlet opening 18, second inlet opening 19, dust boot 20, ball recess 21, bulb 22, push rod 23.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:
Like Fig. 1, shown in Figure 2, a kind of pedal analog machine comprises brake pedal 1.Brake pedal is provided with stroke sensor 2 and tramples simulator 3.Trampling simulator 3 comprises a cylinder body 4 and is arranged on the piston 5 in the cylinder body.One simulator push rod 6 connects piston 5 and brake pedal 1.Specifically, brake pedal 1 is provided with a pedal push rod 9, and pedal push rod 9 one ends are hinged on the brake pedal 1, and pedal push rod 9 other ends are provided with a bulb 22; Said simulator push rod 6 ends are provided with a ball recess 21, and said bulb is located in the ball recess.
As shown in Figure 2, cylinder body 4 comprises first cavity 7 at simulator push rod 6 places and is positioned at second cavity 8 of piston opposite side; The long-pending B of the piston cross-section that contacts with first cavity is less than the long-pending A of the piston cross-section that contacts with second cavity.Be provided with retracing spring 16 in second cavity.Specifically, the end face of cylinder body 4 is provided with a stepped hole, and the bore of stepped hole is reduced toward interior by open end gradually, and the stepped hole open end is provided with end cover 17.Piston 5 is located in the stepped hole between end cover 17 and the stepped hole step.Said second cavity 8 is located between end cover 17 and the piston 5; Said first cavity 7 is located between piston 5 and the stepped hole bottom surface.Said stepped hole step is provided with first inlet opening 18 that is communicated with first cavity 7 with cylinder body 4 between the stepped hole bottom surface; Said end cover 17 is provided with second inlet opening 19 that is communicated with second cavity 8 with cylinder body 4 between the piston 5.Said and second cavity, 8 relative piston 5 sides are provided with a push rod 23, and the length of said push rod 23 is greater than the axial distance between second inlet opening 19 and end cover 17 medial surfaces.Lean on simulator push rod 6 one ends to be provided with dust boot 20 on the cylinder body 4.
As shown in Figure 1, one first braking path 10 is by being connected first chamber, 7 bodies and second cavity 8 respectively on the hydraulic path 14 between brake pump 13 and the car side brake 15.First the braking path 10 comprise and brake pump 13 and car side brake 15 between hydraulic path 14 bonded assembly overall channels and respectively with first inlet opening 18 and second inlet opening, 19 bonded assembly bypass passages.
As shown in Figure 1, the roughly working process of the line control brake system that this electron-like control combines with hydraulic efficiency pressure system is following, and stroke sensor 2 detects the displacement signal of brake pedal 1, and through data line displacement signal is transferred on the electronic control unit 11; Electronic control unit is handled and brake pump 13 is controlled the signal that receives, and brake pump 13 is irritated 12 inside brake liquid with braking liquid and taken out to car side brake 15 through hydraulic path, and then will brake to press to be applied on the car side brake 15 and realize brake-by-wire.In the moving system of On-line Control, it is respective change along with the trampling stroke of brake pedal 1 that the braking that brake pump 13 provided is pressed; When brake pedal 1 trample stroke when big more, the braking that electronic control unit 11 control brake pumps 13 produce is pressed also big more accordingly.These characteristics based on brake-by-wire; When chaufeur is trampled brake pedal 1; The first braking path 10 can be pressed the braking that brake pump 13 produces and is connected in first cavity 18 and second cavity 19; Because the long-pending B of the piston cross-section that contacts with first cavity is less than the long-pending A of the piston cross-section that contacts with second cavity, therefore when chaufeur was trampled brake pedal, piston 5 can provide an antagonistic force for brake pedal 1 through simulator push rod 6 and pedal push rod 9; And this antagonistic force can be along with the variation of trampling stroke of brake pedal 1 respective change and suitable pedal reaction force is provided accordingly; When brake pedal 1 trample stroke when big more, piston is also big more accordingly to the antagonistic force that brake pedal provides through the simulator push rod.After chaufeur discharged brake pedal, the pedal analog machine can reset under the effect of retracing spring.
Claims (6)
1. pedal analog machine; Comprise brake pedal (1), brake pedal is provided with stroke sensor (2), it is characterized in that; Said brake pedal (1) is provided with tramples simulator (3), tramples simulator and comprises a cylinder body (4) and be arranged on the piston (5) in the cylinder body; One simulator push rod (6) connects piston (5) and brake pedal (1); Cylinder body (4) comprises first cavity (7) at simulator push rod place and is positioned at second cavity (8) of piston opposite side, is provided with retracing spring (16) in second cavity; One first braking path (10) is by being connected first cavity and second cavity respectively on the hydraulic path (14) between brake pump (13) and the car side brake (15).
2. a kind of pedal analog machine according to claim 1 is characterized in that, the long-pending B of the said piston cross-section that contacts with first cavity (7) is less than the long-pending A of the piston cross-section that contacts with second cavity (8).
3. a kind of pedal analog machine according to claim 1 and 2; It is characterized in that; Said brake pedal (1) is provided with a pedal push rod (9); Said simulator push rod end is provided with a ball recess (21), and said pedal push rod end is provided with a bulb (22) with respect to ball recess, and said bulb is located in the ball recess.
4. a kind of pedal analog machine according to claim 1 is characterized in that the end face of said cylinder body (4) is provided with a stepped hole, and the bore of stepped hole is reduced toward interior by open end gradually, and the stepped hole open end is provided with end cover (17); Piston (5) is located in the stepped hole between end cover and the stepped hole step; Said second cavity (8) is located between end cover (17) and the piston (5), and said first cavity (7) is located between piston (5) and the stepped hole bottom surface; Said stepped hole step is provided with first inlet opening (18) that is communicated with first cavity (7) with cylinder body between the stepped hole bottom surface, and said end cover is provided with second inlet opening (19) that is communicated with second cavity (8) with cylinder body between the piston.
5. a kind of pedal analog machine according to claim 4; It is characterized in that; Said piston (5) side relative with second cavity (8) is provided with a push rod (23), and the length of said push rod is greater than the axial distance between second inlet opening (19) and end cover (17) medial surface.
6. according to claim 4 or 5 described a kind of pedal analog machines; It is characterized in that, first the braking path (10) comprise and brake pump and car side brake between hydraulic path bonded assembly overall channel and respectively with first inlet opening and the second inlet opening bonded assembly bypass passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220095106 CN202508072U (en) | 2012-03-14 | 2012-03-14 | Pedal simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220095106 CN202508072U (en) | 2012-03-14 | 2012-03-14 | Pedal simulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202508072U true CN202508072U (en) | 2012-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220095106 Expired - Fee Related CN202508072U (en) | 2012-03-14 | 2012-03-14 | Pedal simulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202508072U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105522379A (en) * | 2016-02-26 | 2016-04-27 | 东风(十堰)车身部件有限责任公司 | Equipment for assembling automobile pedal assembly |
| CN108349462A (en) * | 2015-09-12 | 2018-07-31 | 通用汽车环球科技运作有限责任公司 | Non-hydraulic reponse system for the vehicle with simulating brake device pedal |
| CN110053599A (en) * | 2019-04-12 | 2019-07-26 | 江苏理工学院 | Pedal comfort type ABS system |
-
2012
- 2012-03-14 CN CN 201220095106 patent/CN202508072U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108349462A (en) * | 2015-09-12 | 2018-07-31 | 通用汽车环球科技运作有限责任公司 | Non-hydraulic reponse system for the vehicle with simulating brake device pedal |
| CN105522379A (en) * | 2016-02-26 | 2016-04-27 | 东风(十堰)车身部件有限责任公司 | Equipment for assembling automobile pedal assembly |
| CN105522379B (en) * | 2016-02-26 | 2017-12-29 | 东风(十堰)车身部件有限责任公司 | A kind of auto pedal general assembly equipment |
| CN110053599A (en) * | 2019-04-12 | 2019-07-26 | 江苏理工学院 | Pedal comfort type ABS system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20190314 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |