CN2060751U

CN2060751U - Vehicle brake

Info

Publication number: CN2060751U
Application number: CN 90200691
Authority: CN
Inventors: 张吉忠; 郭景云
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-01-22
Filing date: 1990-01-22
Publication date: 1990-08-22

Abstract

The utility model provides a wheel side sliding brake for vehicles, whose principle is that an elongated splined half shaft is matched with two-section outside inner body and inside inner body which have splined holes and are provided with rollers and fan shape brake pads with four cuneate grooves on the outer circle, and the outer part of the inner body is sheathed with an outer body connected with a vehicle wheel hub. When the rollers of the cuneate grooves and the fan-shaped brake pads sheathed on the rollers are rubbed and rolled to the shallow ends of the grooves due to the centrifugal effort and the speed difference, the fan-shaped brake pads between the inner and outer bodies are jacked up to realize the drive or brake, and when the rollers are rolled to the deep ends of the grooves, the brake pads are fallen and are not contacted with the outer body to realize the pure rolling slide.

Description

Vehicle brake

The utility model relates to a kind of motor vehicle addition safety catch, particularly a kind of safety arrestment, skid that makes system of vehicle transmission semiaxis and automatic combination of spindle nose part or disengaging.

At present people still drive driving system running and problems such as the unnecessary parts depreciation that causes and waste of fuel have been carried out many researchs and experiment as usual at power actuated vehicle drive wheel in the coast process.Fig. 1 to Fig. 3, what No. 89219742.0 applications provided is a kind of structure principle chart of the automobile energy-saving device according to the overriding clutch principle design.

Its groundwork is that the interior body 4 that the spline semiaxis 10 and by a lengthening has a splined hole matches, when vehicle advances, the roller 11 that body 4 left-hand revolutions (seeing Fig. 2 first group of wedge-shaped impression 5 of the A-A profile position of Fig. 1 just) were contained among the wedge-shaped impression 5 this moment in spline semiaxis 10 drove rolls to the shallow end of wedge-shaped impression 5 and wedging between interior body 4 and outer body 2 inside diameter surfaces pushing away under the double action of push rod 12 and groove 5 bottom surface friction force, outer body 2 is reached rotate counterclockwise with interior body 4 with outer body 2 flanges 1 bonded assembly wheel nave.

When automobile slide since spline semiaxis 10 rotating speeds reduce or stop, feasible interior body 4 rotating speeds that rotate synchronously with spline semiaxis 10 also reduce or stop, and outer body 2 still continued rotation at a relatively high speed and forming velocity contrast between inside and outside body with wheel under the force of inertia effect this moment, therefore make and roll 11 and rub the deep end that rolls to wedge-shaped impression 5 with the hands, having caused interior body 4 and outer body 2(is wheel nave) disengaging, realized that the pure rolling of wheel slides.Reduced each parts depreciation of driving system and unnecessary consumption of fuel.

When the malfunctioning need of brake system of car utilize the driving engine emergency braking, can hang earlier and reverse gear, (see Fig. 3, second group of wedge-shaped impression 8 on the B-B profile position of Fig. 1 just) make spline semiaxis 10 drive in body 4 clockwise rotate, because in this moment, turning to of outer body is just in time opposite, roller 11 pushed away the shallow end of rubbing wedge-shaped impression 8 with the hands so produce the opposite friction moment of a direction in the contact site up and down of roller 11, can constantly trample power-transfer clutch at the same time rotates 10 public lands of spline semiaxis, and cause roller 11 constantly to wedge 8 shallow end, reach the effect of Jake brake.Because first group of wedge-shaped impression 5 and second group of wedge-shaped impression 8 depth of interior body 4 correct on the contrary, therefore the exercising result that produces is also opposite, (can referring to Fig. 2 and Fig. 3) thus when emergency braking first group of wedge-shaped impression 5 and each part be not contact by contacting to change into outer body 2, and second group of wedge-shaped impression 8 and each zero is to change contact into by not contacting with outer body 2.

Though this automobile energy-saving device can solve problems such as unnecessary wearing and tearing of driving system part and waste of fuel, it is not enough also to exist down example.The first, the vehicle braked process all leans on the hard friction of roller 11 and outer body 2 internal diameter contact portions to realize, because contact is linear little contact, so friction force is less thereby biography is with and braking effect is relatively poor.Its second shortcoming is to have two groups of wedge-shaped impressions to be in together on the whole same on interior body 4 excircles, and distance is very near, thereby difficulty of processing is bigger, its the 3rd shortcoming is that influence passes the band brake effect in the wedge-shaped impression in order to prevent bearing oil from bleeding, bearing at the axle head of spline semiaxis 10 is to compress by the sealing member leak free on the gland 6 and by screw 7, and do not have sealing member between the bearing 3 on second group of wedge-shaped impression 8 and its right side and have only a locating bush 9, this is a tangible defective.

The purpose of this utility model just is to overcome the above-mentioned shortcoming and defect of existing in prior technology, and provide a kind of pass band, braking effect better, longer wheel for motor vehicle limit coarst brake of more reliable and secure life-span.

Characteristics of the present utility model are fan-shaped brake shoes of suit on the roller of each wedge-shaped impression of body in the outside, prevent wearing and tearing to roller to enlarge the contact friction area and to strengthen braking effect.In addition body in the integral type is redesigned into two independent parts, be about to have the spindle nose section that body in the outside of first group of wedge-shaped impression and interior each part thereof is sleeved on the spline semiaxis, the inboard interior body that will have second group of wedge-shaped impression and interior each part thereof is sleeved on the inboard of spline semiaxis, two groups of wedge-shaped impressions are axially all open-minded logical, so that each wedge-shaped impression is axially open-minded, be convenient to processing.Also the bearing right side on the body has installed a sealing member additional in inboard, influences braking effect to prevent that thin oil from bleeding in the wedge-shaped impression.

Fig. 1 is the structure principle chart of existing automobile energy-saving device,

Fig. 2 is the A-A cutaway view of Fig. 1,

Fig. 3 is the B-B cutaway view of Fig. 1,

Fig. 4 is the structure principle chart of this automotive wheels limit coarst brake.

Fig. 5 is the B-B cutaway view of Fig. 4.

Basis is novel is described below in conjunction with 4 to 5 pairs in accompanying drawing.

The utility model improves on the prior art basis and realizes, its main characteristic is sleeved on body in the inboard 16 in the spline semiaxis 10 on the section, body 15 is sleeved on the spindle nose section of spline semiaxis 10 in the outside, bearing 3 right sides in inboard on the body 16 are fixed with a sealing member, see Fig. 4.And in the outside, two ends of rear axle symmetric arrangement.

In inboard in the body 16 and the outside wedge-shaped impression 8 on the

body

15 and 5 axially all with the inboard in body 16 and the outside body 15 axial widths equate that promptly 8 and 5 in axial all open-minded leading to.Movable set one and roller 11 isometric transversal surfaces are the fan-shaped brake block 18 of fan-shaped on the roller 11 in the outside in each wedge-shaped impression 5 of body 15, see Fig. 4 and Fig. 5, on dark, the shallow end sidewall of wedge-shaped impression, all be drilled with blind hole 14, push rod 12 and spring 13 are all arranged in the blind hole, in inboard in the wedge-shaped impression 8 of body 16 just a side spring 13 and push rod 12 are arranged, fan-shaped brake block 18 outside faces in the outside in body 15 wedge-shaped impressions 5 are bonding or be connected with brake facing 19.

Its principle of work is, its principle is identical with prior art at cruising and when sliding, and (see figure 2) is died and do not repeated.

See Fig. 5 when when reversing automobile, reaching by Jake brake.

Body 15 clockwise rotates in outside spline semiaxis 10 drives during reversing, because this moment, outer body 2 was in halted state with wheel nave, so roller 11 is rolled into the shallow end of wedge-shaped impression together with fan-shaped brake block 18 by stranding under wedge-shaped impression 5 bottom surface friction force effects when body in the outside 15 clockwise rotates, make fan-shaped brake block 18 appearance arcwall face wedgings outside between body 2 inside faces and make in the outside body 15 drive outer body 2 to realize together moveing backward.

When automobile need be used Jake brake, should reverse rotation earlier and make roller 11 roll stranding to 5 shallow end, its principle is identical during with the reversing situation, this is because before emergency braking, wheel rotates with outer body 2, fan-shaped brake block 18 disengages with outer body 2 inside faces, so body 15 clockwise rotates in the spline semiaxis 10 and the outside when reversing rotation, and outer body 2 rotates counterclockwise with wheel nave, roller between two rotating elements and fan-shaped brake block 18 are because of velocity contrast, and the friction force reason that produces by stranding shift onto the shallow end of wedge-shaped impression 5 and wedging in the outside body 15 and outside between body 2 inside faces, when constantly trampling power-transfer clutch, then constantly wedge to realize emergency braking.

When sliding, because spline semiaxis 10 slows down or stops to make wedge-shaped impression 5 bottom surfaces and roller 11 friction force to reduce, spring 13 promotes push rods 12 and roller 11 is pushed up 5 deep end and the friction lining 19 of fan-shaped brake block 18 outside faces is disengaged with outer body 2 inside faces realized that pure rolling slides, and situation is identical with sliding state shown in Figure 2 at this moment.

This shows, this vehicle brake not only has the characteristics that existing vehicle energy device pure rolling slides, have more braking safe, braking is reliable, and noise characteristics little and long service life are a kind of simple and easy to do additional braking, Energy-saving coasting devices of vehicle.

Claims

1, a kind of wheel for motor vehicle limit coarst brake, it by the spline semiaxis of lengthening and be nested with it interior body of joining and be sleeved in engine body exterior and with the outer body of wheel nave flange bonded assembly and and the gland of their left end screw retention form, in integral type, have two groups of wedge-shaped impressions that roller all is housed on the body, in the deep end one side blind hole of each wedge-shaped impression spring and push rod are housed all, it is characterized in that:

Fan-shaped brake block that has friction lining of suit on the roller of each wedge-shaped impression of body can contact or break away between the friction lining of fan-shaped brake block outside face and the outer body inside face in a, the outside;

B, spline semiaxis spindle nose section are set with body in the outside that has first group of wedge-shaped impression, and spline semiaxis inboard is set with the inboard interior body that has second stage wedge-shaped impression, and two groups of wedge-shaped impressions axially all slit and lead to,

A sealing member is equipped with on c, inboard interior body head bearing right side.

2, according to the described wheel for motor vehicle of claim 1 limit coarst brake, it is characterized in that:

Circumferential deep end of each wedge-shaped impression of body and shallow end all have blind hole in a, the outside, and push rod and spring all are housed in the blind hole, and the fan-shaped brake block outside face in each wedge-shaped impression can glue the embedding friction lining;

B, inboard in body and the outside on the body each wedge-shaped impression axially slit logical, inboard in the deep end of each wedge-shaped impression of body and the shallow end and the outside each wedge-shaped impression of body deeply, shallow end is in circumferential position opposite,

C, this coarst brake are at the outside, two ends of rear axle symmetrical mounting.