CN201110331Y - Floating clamp fluid pressure disc type integration brake based on screw drive - Google Patents

Abstract

The utility model disclose a floating plier hydraulic disc type integrated brake based on screw transmission, which relates to a brake which is suitable for most vehicles, the structure of the brake is characterized in that a pulling arm component (10), an ejector pins component (20), a steel ball component (30), a push rod component (40), a piston component (50), a friction block (60), a caliper body (70) and a brake disk (80) are sequentially connected, a caliper body floating support (90) is connected with the caliper body (70) through a guide finger, and an installing bracket (100) is connected with the caliper body floating support (90) through a set bolt and simultaneously is fixed on a vehicle-bridge by the set bolt. The brake utilizes the characteristics of the screw transmission and adopts a special three-start non self-lock thread, which not only realizes the smooth transmission of brake force, but also can automatically adjust the working clearance between friction block and brake disk, the brake integrates the two functions of foot brake and parking brake, obviously improves the brake performance, reduces the distance of brake, and efficiently enlarges the applicable scope of the disc type brake.

Description

Hydraulic disk type integrated arrestor of floating clamp based on power screw

Technical field

The utility model relates to a kind of break that is applicable to most of passenger vehicles, relates in particular to a kind of hydraulic disk type integrated arrestor of floating clamp based on power screw; Two kinds of functions of integrated driving of this break and parking braking have significantly improved braking ability, have reduced stopping distance; Effectively expanded the Applicable scope of disk type braker.

Background technique

Hydraulic brake is applied to vehicles such as car, Light-duty Vehicle the history in three, 40 years.Disk type braker has that thermal diffusivity is good, braking steadily, heat resistanceheat resistant decline and water fade is good, safeguard advantages such as convenient, but because reasons in structure faces a lot of difficulties when realizing the needed parking braking function of vehicle, make disk type braker only be used widely, and back axle is still continued to use tep reel formula break in drum-type or the drum at the propons of vehicle.Tep reel formula brake structural complexity in drum-type or the drum, the heat radiation difficulty, heat resistanceheat resistant decline property is poor, and maintenance process is loaded down with trivial details.Along with improving constantly of Vehicle Speed, and under the situation to vehicle riding comfort energy pay attention to day by day, the braking ability of tep reel formula break is difficult to satisfy new requirement in drum-type or the drum.

Constantly perfect along with China's automobile market, new model is on the increase, and the Consumer also improves constantly the requirement of vehicle braked Security, ride comfort.Though the new model of listing generally adopts disk type braker at propons in the recent period, is subjected to the influence of factors such as structure, cost to have only the high-grade deluxe carmodel of minority import to equip complex structure, the expensive hydraulic brake that has parking function.Most of passenger cars towards domestic consumer still adopt the arrangement that rouses behind the shroud, because the front and back braking ability is inconsistent, have limited the raising of vehicle integral stop performance.The hydraulic brake that has parking function that external high-grade deluxe carmodel is equipped with is had relatively high expectations to vehicle, and complex structure, cost are too expensive, promotes very difficulty at home!

Summary of the invention

The purpose of this utility model is in order to overcome the shortcoming and defect of disc type Parking Brake in existing drum-type and the drum, simplified structure, effectively reduce cost, expand the using scope of disk type braker, a kind of hydraulic disk type integrated arrestor of floating clamp based on power screw is provided; Realize that by the mechanical mechanism of developing a cover advantages of simple function of service brake and parking braking is integrated, can regulate automatically simultaneously because the gap that the brake pad wearing and tearing cause.

The purpose of this utility model is achieved in that

The utility model comprises conventional general part brake pad, caliper body, brake disc, caliper body floating bracket, mounting bracket;

Also comprise torque arm assembly, push rod component, steel ball component, push-rod assembly, piston assembly;

From left to right, torque arm assembly, push rod component, steel ball component, push-rod assembly, piston assembly, brake pad, caliper body, brake disc connect successively; The caliper body floating bracket is connected with caliper body by guide finger, and mounting bracket is connected with fixing bolt with the caliper body floating bracket, is fixed on the vehicle bridge with fixing bolt simultaneously;

Described torque arm assembly comprises torque arm, fixing bolt, torsion spring supporting base, torsion spring, drag-line support;

Described push rod component comprises plain cushion, plane needle bearing, seal ring, push rod;

Described steel ball component comprises steel ball and retainer;

Described push-rod assembly comprises sealing plug screw, seal ring, hold-down ring, guide finger, push rod, volute spring, spring seat, spacing card silk;

Described piston assembly comprises back-up ring, wavy spring, plain cushion, plane ball bearing, ram seat, piston;

The drag-line support is by being bolted on the caliper body; Torque arm is connected with push rod component by spending to be good for; The ball-and-socket chucking steel ball at push rod and push rod top; Sealing plug screw and caliper body adopt screw-thread fit; Guide finger inserts in the guiding groove of push rod; Spacing card silk is stuck in the groove of caliper body inside; The inner chamber that ram seat places piston by thread bush on push rod.

Working principle of the present utility model is:

Torque arm is subjected to driving the push rod rotation and making the torsion spring pretension with spline behind the pulling force of brake cable, because it is dark that retainer and steel ball are stuck in push rod and push rod top three groups--fixing in the shallow pair of hemispherical groove, the push rod rotation will drive steel ball and move between dark, shallow two bulb-shaped recess, the degree of depth official post push rod of two kinds of hemispherical groove moves, displacement amount is passed to ram seat and piston by push rod, piston stretches out, and the promotion brake pad compresses brake disc and finishes Parking; After parking braking finishes, brake cable is removed pulling force, torsion spring drive torque arm and push rod counterrotating set back and put, because the push rod bottom loses the support of push rod, the return mechanism of being made up of spring seat, volute spring, spacing card silk can be oppressed push rod and be retreated, the gap occurs between push rod and the ram seat screw thread, this gap is the primary clearance of design, and its value is greater than the maximum return amount of piston.Because brake pad normal wearing and tearing can occur in the course of the work, so require piston little by little to stretch out the gap of bringing with compensate for wear.In order to adapt to this requirement, ram seat, plane ball bearing and plain cushion and wavy spring are formed limit stoper and are assemblied in the piston of special construction, the plane ball bearing guarantees the rotation of ram seat in piston, wavy spring makes fully contacting between plane ball bearing and ram seat and ram seat and the piston, and it is as a whole that back-up ring is assembled into whole clearance adjustment mechanism and piston.In the screw-thread fit schematic diagram in Fig. 6, the screw thread flank of tooth of ram seat and push rod has 41.5 ° and 1.48 ° of two working surfaces, position among the figure is the working condition of the screw thread flank of tooth under the braking state, 41.5 ° two flank of tooth fit and compress, the maximum working gap of between cog is, behind the piston return, push rod retreats, 41.5 ° two flank of tooth break away from, 1.48 mm clearance amounts are greater than the maximum return amount of piston, fit and produce and drag moment to guarantee can not occur two 8 ° of working surfaces.

The utility model adopts floating type clamp structure, especially:

1. splined is adopted in torque arm, cooperates reliable; Self lever ratio is adjustable, and adaptability is strong

2. push rod, push rod adopt the two socket arrangement of the depth, and transmission is stable

3. push rod and ram seat adopt the power screw of special three no self-lockings, and be simple and reliable for structure

4. the piston clearance self-adjustment structure is realized jointly by cone match, wavy spring pretension and the plane needle bearing antifriction of ram seat and piston.

The utlity model has following advantage and good effect:

1. adopt float pincers, double bracket structure, it is little to take up room, and is convenient to vehicle and arranges;

2. spline structure can transfer larger torque, cooperates adjustable torque arm lever ratio, and vehicle adaptability is strong;

3. two ball-and-socket rounding ofves of depth type, braking process is steady;

The power screw of 4. special three no self-lockings, transmission are accurately, reliably;

5. the automatic compensate for wear of piston clearance self-adjustment structure gap need not manual intervention;

6. the back axle at vehicle can replace disc type Parking Brake in drum-type and the drum, has simplified the braking system overall structure; Braking characteristic is consistent before and after making car load, has promoted the integral stop performance and the Security of vehicle.

The utility model is applicable to the break of passenger vehicle.

Description of drawings

Fig. 1 is an overall structure sectional view of the present utility model;

Fig. 2 is the explosive view of torque arm assembly (10);

Fig. 3 is the explosive view of push rod component (20);

Fig. 4 is the explosive view of push-rod assembly (40);

Fig. 5 is the explosive view of piston assembly (50);

Fig. 6 is push rod (45), ram seat (55) screw-thread fit schematic diagram;

Fig. 7 is the structural drawing of push rod (45).

Wherein:

10-torque arm assembly;

The 11-torque arm, the 12-fixing bolt, 13-torsion spring supporting base,

The 14-torsion spring, 15-drag-line support;

The 20-push rod component;

21-plain cushion, 22-plane needle bearing, the 23-seal ring,

The 24-push rod;

The 30-steel ball component;

The 40-push-rod assembly;

41-seals plug screw, the 42-seal ring, and the 43-hold-down ring,

The 44-guide finger, the 45-push rod, the 46-volute spring,

The 47-spring seat, the spacing card silk of 48-;

The 50-piston assembly;

The 51-back-up ring, the 52-wavy spring, the 53-plain cushion,

54-plane ball bearing, 55-ram seat, 56-piston.

The 60-brake pad;

The 70-caliper body;

The 80-brake disc;

90-caliper body floating bracket;

The 100-mounting bracket.

Embodiment

Describe in detail below in conjunction with drawings and Examples

One, overall

As Fig. 1,2,, form the input of parking braking power and recover mechanism by torque arm (11), fixing bolt (12), torsion spring supporting base (13), torsion spring (14), drag-line support (15) assembled in sequence at break outer installment torque arm assembly (10); Torque arm (11) be connected with push rod (24) with spline and with plane needle bearing (22), the switching mechanism of plain cushion (21) assembled in sequence component movement, push rod (24) assemblies the parking braking force transfer mechanism by retainer (32) and steel ball and push rod (45); Spring seat (47), spacing card silk (48), volute spring (46) are assemblied in push rod (45) and go up and be fixed on composition recovery mechanism in the piston cylinder hole; Sealing plug screw (41), seal ring (42), hold-down ring (43), guide finger (44) assembled in sequence are formed the push rod position-limit mechanism; Back-up ring (51), plane ball bearing (54) are formed limit stoper with plain cushion (53) and wavy spring (52) ram seat (55) are pressed on composition clearance adjustment mechanism in the piston (56).

Two, each parts

1, torque arm assembly (10)

As Fig. 2, the structure of torque arm assembly (10) is: drag-line support (15) is by being bolted on the caliper body (70); The two ends of torsion spring (14) are stuck on torque arm (11) and the drag-line support (15); Torsion spring supporting base (13) is enclosed within the torsion spring (14), and is connected with fixing bolt (12) between the push rod (24); Torque arm (11) is connected with push rod (24) by spending to be good for;

Described torque arm (11) is a kind of crank spline forging;

Described bolt (12) is a kind of general part;

Described torsion spring supporting base (13) is a kind of solid of rotation stamping part;

Described torsion spring (14) is a kind of circular section one arm curl torsion spring;

Described drag-line support (15) is a kind of steel stamping part that has spacing draw-in groove.

2, push rod component (20)

As Fig. 3, the structure of push rod component (20) is: push rod (24) adopts axis hole to cooperate by oil sealing (21) with the hole on the caliper body (70); Plain cushion (23), plane needle bearing (22) are fixed between push rod (24) and the caliper body (70); Push rod (24) tightens steel ball (31) with the ball-and-socket at push rod (45) top;

Described push rod (24) be a kind of in top layout three groups of spline ladder cylinders that respectively are hexagonal angle depth ball-and-socket.

3, steel ball component (30)

As Fig. 1, the retainer in the steel ball component (30) is a kind of three sheet metal stamping part that respectively are hexagonal angle circular arc fluting that have.

4, push-rod assembly (40)

As Fig. 4, the structure of push-rod assembly (40) is: sealing plug screw (41) adopts screw-thread fit with caliper body (70); Guide finger (43) inserts in the guiding groove of push rod (45); Volute spring (46) is enclosed within push rod (45) and goes up by spring seat (47) prestressing; Spacing card silk (48) is fixed in the inner groove of caliper body (70);

Described guide finger (43) is a kind of ladder cylinder of symmetrical chamfered edge;

Described push rod (45) has been a kind of top layout three groups of ladder screw rods (as Fig. 9) that respectively are hexagonal angle depth ball-and-socket, have special three no self-locking threads;

Described volute spring (46) is a kind of taper spring of circular cross-section;

Described spring seat (47) is a kind of solid of rotation stamping part that has convex;

Described spacing card silk (48) is a kind of stamping part of circular section.

5, piston assembly (50)

As Fig. 5, the structure of piston assembly (50) is: back-up ring (51) is stuck in the groove of piston (56), wavy spring (52), plain cushion (53), plane ball bearing (54) are pressed between back-up ring (51) and the ram seat (55), the inner chamber that ram seat (55) places piston (56) by thread bush on push rod (45);

Described ram seat (55) is a kind of ladder Rotary-table that has special no self-locking internal thread;

Described piston (56) is a kind of forging that has ladder Rotary-table inner chamber.

Claims (6)

1. the hydraulic disk type integrated arrestor of floating clamp based on power screw comprises conventional general part brake pad (60), caliper body (70), brake disc (80), caliper body floating bracket (90), mounting bracket (100);

It is characterized in that: also comprise torque arm assembly (10), push rod component (20), steel ball component (30), push-rod assembly (40), piston assembly (50);

From left to right, torque arm assembly (10), push rod component (20), steel ball component (30), push-rod assembly (40), piston assembly (50), brake pad (60, caliper body (70), brake disc (80) connect successively; Caliper body floating bracket (90) is connected with caliper body (70) by guide finger, and mounting bracket (100) is connected with fixing bolt with caliper body floating bracket (90), is fixed on the vehicle bridge with fixing bolt simultaneously;

Described torque arm assembly (10) comprises torque arm (11), fixing bolt (12), torsion spring supporting base (13), torsion spring (14), drag-line support (15);

Described push rod component (20) comprises plain cushion (21), plane needle bearing (22), seal ring (23), push rod (24);

Described steel ball component (30) comprises steel ball, retainer;

Comprise sealing plug screw (41), seal ring (42), hold-down ring (43), guide finger (44), push rod (45), volute spring (46), spring seat (47), spacing card silk (48) in the described push-rod assembly (40);

Described piston assembly (50) comprises back-up ring (51), wavy spring (52), plain cushion (53), plane ball bearing (54), ram seat (55), piston (56);

Drag-line support (15) is by being bolted on the caliper body (70); Torque arm (11) is connected with push rod component (20) by spending to be good for; Push rod (24) tightens steel ball (31) with the ball-and-socket at push rod (45) top; Sealing plug screw (41) adopts screw-thread fit with caliper body (70); Guide finger (44) inserts in the guiding groove of push rod (45); Spacing card silk (48) is stuck in the inner groove of caliper body (70); The inner chamber that ram seat (55) places piston (56) by thread bush on push rod (45).

2. hydraulic disk type integrated arrestor of floating clamp according to claim 1 is characterized in that the structure of torque arm assembly (10) is:

Drag-line support (15) is by being bolted on the caliper body (70); The two ends of torsion spring (14) are stuck on torque arm (11) and the drag-line support (15); Torsion spring supporting base (13) is enclosed within the torsion spring (14), and is connected with fixing bolt (12) between the push rod (24); Torque arm (11) is connected with push rod (24) by spending to be good for;

Described torque arm (11) is a kind of crank spline forging;

Described bolt (12) is a kind of general part;

Described torsion spring supporting base (13) is a kind of solid of rotation stamping part;

Described torsion spring (14) is a kind of circular section one arm curl torsion spring;

Described drag-line support (15) is a kind of steel stamping part that has spacing draw-in groove.

3. hydraulic disk type integrated arrestor of floating clamp according to claim 1 is characterized in that the structure of push rod component (20) is: push rod (24) adopts axis hole to cooperate by oil sealing (21) with the hole on the caliper body (70); Plain cushion (23), plane needle bearing (22) are fixed between push rod (24) and the caliper body (70); Push rod (24) tightens steel ball (31) with the ball-and-socket at push rod (45) top;

Described push rod (24) be a kind of in top layout three groups of spline ladder cylinders that respectively are hexagonal angle depth ball-and-socket.

4. hydraulic disk type integrated arrestor of floating clamp according to claim 1 is characterized in that the retainer in the steel ball component (30) is a kind of three sheet metal stamping part that respectively are hexagonal angle circular arc fluting that have.

5. hydraulic disk type integrated arrestor of floating clamp according to claim 1 is characterized in that the structure of push-rod assembly (40) is: sealing plug screw (41) adopts screw-thread fit with caliper body (70); Guide finger (43) inserts in the guiding groove of push rod (45); Volute spring (46) is enclosed within push rod (45) and goes up by spring seat (47) prestressing; Spacing card silk (48) is fixed in the inner groove of caliper body (70);

Described guide finger (43) is a kind of ladder cylinder of symmetrical chamfered edge;

Described push rod (45) has been a kind of top layout three groups of ladder screw rods (as Fig. 9) that respectively are hexagonal angle depth ball-and-socket, have special three no self-locking threads;

Described volute spring (46) is a kind of taper spring of circular cross-section;

Described spring seat (47) is a kind of solid of rotation stamping part that has convex;

Described spacing card silk (48) is a kind of stamping part of circular section.

6. hydraulic disk type integrated arrestor of floating clamp according to claim 1, the structure that it is characterized in that piston assembly (50) is: back-up ring (51) is stuck in the groove of piston (56), wavy spring (52), plain cushion (53), plane ball bearing (54) are pressed between back-up ring (51) and the ram seat (55), the inner chamber that ram seat (55) places piston (56) by thread bush on push rod (45);

Described ram seat (55) is a kind of ladder Rotary-table that has special no self-locking internal thread;

Described piston (56) is a kind of forging that has ladder Rotary-table inner chamber.

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