CN201021277Y

CN201021277Y - Automobile braking force regulation device

Info

Publication number: CN201021277Y
Application number: CNU2007200788481U
Authority: CN
Inventors: 史凤鸣
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-22
Filing date: 2007-03-22
Publication date: 2008-02-13
Anticipated expiration: 2017-03-22

Abstract

The utility model discloses an automobile braking force adjusting device, which is characterized in that the utility model comprises an end cover, a valve body, an adjusting bolt, a valve core sleeve, a valve core, a copper block, a steel ball, a spring, a connecting sleeve, an adjusting block and a sealed piece. The adjusting bolt, the valve core sleeve, the valve core, the spring, the steel ball, the copper block, the spring and the adjusting block are respectively arranged in two cylindrical valve bodies; the two valve bodies are tightly connected via the connecting sleeve. The utility model is arranged on the front and rear shaft braking line of the automobile braking system, the braking force of the front and rear wheels can be adjusted in a sectional way, thus the slipping distance of the wheel lock can be reduced, and the directional maneuverability and the braking stability can be increased; the whipping during the automobile emergency braking is avoided and the braking length is reduced; the adjustment and the matching to the automobile models and the automobile condition can be realized without disassembly after being assembled; the utility model has the advantages that the production cost is low, and the installation is simple and convenient.

Description

Automobile braking force regulator

Technical field

The utility model relates to a kind of device to apply correction to braking force, and particularly a kind of hydraulic vehicle braking power is regulated combine valve.

Background technology

The economical vehicle of part that adopts hydraulic braking improves braking effect for reducing production costs at present, and limiting valve only has been installed, and apportioning valve or load sensing valve whipping occurs to prevent glancing impact because of rear-wheel braking force is excessive, and safety misadventure takes place; Because most safety control device for automobile all are difficult to mend to adorn, make any safety control is not installed using economical vehicle, have a lot of accident potential.Though above-mentioned each valve cost is low, simple in structure, has many deficiencies: the one, before dispatching from the factory, carry out complicated matching test according to vehicle, there is not comformability widely; The 2nd, owing to limited the increase of rear axle wheel braking force, influenced the trailing wheel braking effect; The 3rd, because they only control the rear axle wheel, can not realize the reasonable distribution of forward and backward axle wheel braking force, thereby reduce the brake efficiency of car load.

Summary of the invention

The purpose of this utility model provides a kind of any coupling, the automobile braking force regulator of easy installation., carry out sectional-regulated to forward and backward axle brake-pressure respectively and progressively increase delivery pressure when the automobile brake by this device, make the braking force of forward and backward wheel obtain rational Match and reach balance at last, to obtain desirable braking effect with different step-down ratios.

Technological approaches of the present utility model is: be made up of the identical but size of two structures, combine valve F and R that parameter is different, be connected between automobile brake master cylinder and the brake cylinder pipeline.F valve coupling front axle, the braking force of forward and backward axle wheel is controlled and regulated to R valve coupling rear axle respectively.Combine valve is made of oil release valve and switch valve two parts, and oil release valve one end links to each other with master brake cylinder, and switch valve one termination is led to brake cylinder.Because size, the parameter difference of two combine valves make when brake-pressure begins by F and R combine valve, the initial pressure of F valve is all the time greater than the R valve, and the step-down ratio is all the time less than the R valve, and makes forward and backward axle can obtain different brake-pressures.When initial braking, particularly during emergency brake, can guarantee that front axle brake pressure is all the time greater than rear axle, and make front and rear wheel under the obvolvent rolling condition, progressively increase braking force, with avoid because of braking force excessive, the front-wheel locking is too fast and increase the static friction skidding distance of front-wheel, makes vehicle obtain direction to control again; Also can avoid excessive or prior to front-wheel locking whipping, safety misadventure takes place because of rear-wheel braking force.Because the spring variable range of oil release valve is bigger, therefore can adapt to the variation of vehicle.Reach certain value when the delivery pressure step-down increases, when the speed of a motor vehicle reduced, F and R combine valve elder generation, back be the starting switch valve respectively, and braking force is regulated again, input pressure and delivery pressure transient equilibrium, and vehicle stops rapidly.Because the spring of control oil release valve and switch valve is adjustable, thereby can debug coupling according to different automobile types.

The beneficial effects of the utility model: the one, the braking force of forward and backward axle wheel is carried out sectional-regulated, braking force is progressively coordinated to increase, and increases the handling of direction, and braking procedure is steady; The 2nd, reduce the slippage of wheel static friction, prolong tire life; The 3rd, the whipping when effectively avoiding emergency brake also shortens stopping distance; The 4th, different automobile types and vehicle condition are had comformability widely; The 5th, compact conformation is installed simply, and low cost of manufacture is easy to safeguard.

Description of drawings:

Fig. 1 automobile braking force regulator constructional drawing

Parts title, sequence number among the figure: 1-O type sealing member; The 2-end cap; The 3-adjustable bolt; The 4-valve body; 5-Y type sealing member; 6-Y type sealing member; The 7-spool; 8-Y type sealing member; 9-O type sealing member; The 10-coupling sleeve; The 11-valve body; The 12-regulating block; 13-Y type sealing member; 14-O type sealing member; The 15-end cap; 16-Y type sealing member; The 17-spool; The 18-spring; 19-Y type sealing member; The 20-copper billet; The 21-steel ball; The 22-spring; The 23-spring; The 24-valve core housing

Concrete formation of the present utility model

Adjust bolt (3) axial thread and connect valve body (4) and mutually tactile with valve core housing (24), turn is adjusted bolt (3) namely Adjustable springs (22) answer in advance elastic force; Between valve core housing (24) and valve body (4), Y type seal (5) is arranged; At valve Core retainer plate (24) inner sleeve has spool (7) and Y type seal (6) sealing is arranged; Spool (7) can be in valve core housing (24) axle To motion; Spring (23) is housed in the spool (7), and an end of spring (23) is put into the bottom of an end of spool (7), in addition One end is placed with steel ball (21); Have strong groove (c) and hole (b) on the one end inner hole wall of spool (7); Spool (7) one Bottom section is embedded with copper billet (20), an end of copper billet (20) have bellmouth in order to and steel ball (21) sealing; Spool (7) Two ends have respectively Y type seal (8) and Y type seal (6) to form with valve body (4) and valve core housing (24) to seal; Spool (7) can be done axially-movable in valve body (4) and valve core housing (24). Above-mentioned each parts are respectively charged into valve body (4) In the chamber, end face seals with end cap (2) spiral marking connection with O type seal (1); Valve body (4) has oil-in (a) Link with master cylinder; Form chamber (k) between spool (7) and valve body (4) and the valve core housing (24); Spool (7) and valve body (11) Form chamber (n). An end axially is equipped with regulating block (12) in the chamber of valve body (11); One end of regulating block (12) has the Y type close Sealing (13), and connect with screw thread and valve body (11); Join at an end of regulating block (12) and an end of spool (17) And formation chamber (g); Regulating block (12) has T-shaped passage (f) and communicates with chamber (g) and oil-out (e) respectively; Spool (17) having through hole (h) communicates with chamber (g); One end of spool (17) is a cylinder; Cylinder is equipped with spring outward (18), the top end face has logical oil groove (d) and inserts in the hole of copper billet (20) and forms passage (j) with copper billet (20); The sealing of Y type seal (16) and Y type seal (19) is arranged between spool (17) and the valve body (11); Spool (17) Can in valve body (11), do axially-movable; One end of valve body (11) and end cap (15) link with screw thread and the sealing of O type are arranged Part (14) sealing; Having oil-out (e) at valve body (11) links with wheel cylinder; One end of valve body (4) and valve body (11) An end use anti-phase screw threads for fastening by coupling sleeve (10), the end face of two valve bodies contacts has O type seal (9) sealing.

The specific embodiment of the present utility model

During initial condition, spring (22) acts on the spool (7), and spool (7) is in the end position on right side, and spool (17) backs down firm ball (21), and braking liquid can be through (a), (k), (b), (c), (d), (j), (h), (g), (f), (e) passage of Xing Chenging flows into brake cylinder.Since spool (7) in the chamber (n) compression area greater than chamber (k) end compression area, hold the application force that is born greater than chamber (k) at uniform pressure effect bottom spool (7) application force that (n) end is born in the chamber, spool (7) should move to the left, but the chamber (n) of spool (7) end is subjected to the application force of spring (22) simultaneously again, when the application force of chamber (n) face during less than the thrust sum of the application force of chamber (k) face and spring (22), spool (7) is in the position identical with initial condition.When pressure increases, when the application force of chamber (n) face equals the thrust sum of the application force of chamber (k) face and spring (22), spool (7) moves to the left, spool (17) disengaging contacts with steel ball (21), steel ball (21) moves under the effect of spring (23) to the right, makes the conical surface of copper billet (20) and steel ball (21) form sealing.Spool (7) is in the unstable balance state, is the initial point of hypotensive effect.When input pressure continues to increase, because copper billet (20) has formed sealing with steel ball (21), the application force of chamber (n) face remains unchanged, the application force of chamber (k) face increases with the increase of input pressure, when the thrust sum of application force and the spring (22) of chamber (k) end during greater than the application force of chamber (n) end, spool (7) is mobile to the right, and spool (17) backs down steel ball (21), copper billet (20) breaks away from sealing with steel ball (21), forms the passage identical with initial condition again.So be concatenated to form the reciprocal axial motion of spool (7), the pressure of output is reduced pari passu with the increase of input pressure.Prevent that initial braking force is excessive, the front-wheel locking is too fast and increase skidding distance, and rear lock is too fast or braking force is excessive and produce and break away whipping.When pressure is increased to certain stage promptly: the pressure that chamber (g) produces increases in the time of also can overcoming the elastic force of spring (18), and spool (17) will back down steel ball (21) and make device be in pass-through state to left movement, braking liquid warp (a), (k), (b), (c), (d), (j), (h), (g), (f), (e) formed passage, through brake cylinder, input pressure equals delivery pressure, and vehicle is stopped rapidly.Turn adjustable bolt (3) can be adjusted the elastic force of spring (22), thus the initial point of control spool (7) reciprocal axial motion; Turn regulating block (12) can be adjusted the elastic force of spring (18), thereby control spool (17) backs down the force value of steel ball (21) to left movement; Promptly can adapt to the variation of vehicle feature by above-mentioned adjustment.

Claims

1. an automobile braking force regulator is characterized in that: comprise end cap (2); Adjustable bolt (3); Valve body (4); Spool (7); Coupling sleeve (10); Valve body (11); Regulating block (12); End cap (15); Spool (17); Spring (18); Copper billet (20); Steel ball (21); Spring (22); Spring (23); Valve core housing (24).Described adjustable bolt (3) axially is spun on the end in valve body (4) chamber and is right after with valve core housing (24), and turn adjustable bolt (3) promptly can be adjusted the elastic force of spring (22); Y type sealing member (5) sealing is arranged between described valve core housing (24) and the described valve body (4) and form chamber (k) with described spool (7); Spring (23) is housed in the chamber of described spool (7); Spring (23) one ends are put into a bottom portion of spool (7), and the other end is equipped with steel ball (21); Have strong groove (c) and hole (b) in the chamber of described spool (7) on the stomidium wall in order to connect input port (a); The right-hand member bottom of described spool (7) is embedded with copper billet (20); Described copper billet (20) has a cylindrical hole, and through hole one end has circular conical surface, and is axially corresponding with described steel ball (21); Described spool (7) one ends insert the endoporus of valve core housing (24), and Y type sealing member (6) sealing is arranged; Described spring (22) places valve core housing (24), and spool (7) is in the cavity that valve body (4) forms; Above-mentioned parts (3,4,24,7,23,21) are respectively charged into the inner chamber of valve body (4); Described end cap (2) seals with the described valve body of spiral marking connection (4) and with O type sealing member (1); Described valve body (4) has oil inlet (a) and communicates with master cylinder.

2. according to claim 1, a kind of automobile braking force regulator is characterized in that: described regulating block (12) axially is spun on the inner chamber of valve body (11), and an end and spool (17) are right after, and turn regulating block (12) can be adjusted the elastic force of spring (18); Seal with Y type sealing member (13) between described regulating block (12) and the described valve body (11); Described valve body (11) has delivery port (e) and communicates with wheel cylinder; One end of described spool (17) has logical oil groove (d), so that make steel ball as claimed in claim 1 (21) and described spool (17) still can obtain asphalt channel when contacting and communicate with delivery port (e); Described spool (17) forms cavity (g) with regulating block (12); One end of described spool (17) inserts copper billet as claimed in claim 1 (20) and forms passage (j); Described spool (17) has axially extending bore (h); Described through hole (h) end communicates with the described chamber of claim 1 (k), and the other end communicates with described chamber (g); With Y type sealing member (16), (19) seal between described spool (17) and the described valve body (11); Described regulating block (12) has T type hole (f) and communicates with chamber (g) and delivery port (e) respectively; Spring (17) places in the chamber of valve body (11) and spool (17) formation; Above-mentioned parts (12,17,18) are loaded on the inner chamber of described valve body (11) respectively; Described end cap (15) seals with spiral marking connection valve body (11) and with O type sealing member (14).

3. as claim 1,2 is described, a kind of automobile braking force regulator, it is characterized in that: described coupling sleeve (10) connects described valve body (4) and described valve body (11) with reverse thread, can behind the relative position of adjusting input port (a) and delivery port (e), make described valve body (4) and the fastening connection of described valve body (11) and O type sealing member (9) sealing is arranged.