CN102678539A

CN102678539A - Pump case block

Info

Publication number: CN102678539A
Application number: CN2012100512960A
Authority: CN
Inventors: 安成基
Original assignee: Hyundai Mobis Co Ltd
Current assignee: Hyundai Mobis Co Ltd
Priority date: 2011-03-02
Filing date: 2012-03-01
Publication date: 2012-09-19
Also published as: KR20120099883A

Abstract

The present invention relates to a pump case block for generating an oil pressure, and is about a pump case block structure having a plurality of pistons for generating an oil pressure used for a vehicle brake system. The pump case block provided by the present invention comprises: a driving hole used for inserting a rotating shaft; a plurality of pump cylinders which are vertical to the rotating shaft, distributed in pairs and isolated from each other on a plurality of planes, and inserted with pistons; and a pump case, wherein, the pump cylinders distributed in pairs take the driving hole as a center, and are communicated oppositely in a straight line to form the pump case.

Description

The pump case piece

Technical field

The present invention relates to a kind of pump case piece that produces oil pressure, particularly, is the pump case block structured technology that has a plurality of pistons about the oil pressure that is used for motor vehicle braking system for generation.

Background technique

Vehicle of today has been not content with simple braking device or ABS (Anti-lock Brake System) has been installed, and the installation of picture ESC active safety installationss such as (Electronic Stability Control) is more and more general.

Aforesaid active safety installations must possess the rapidly hydraulic pressure control device of control brake oil pressure, and along with the increase of additional functionality, and the capacity and the durability requirement of said hydraulic pressure control device also increased.

Said hydraulic pressure control device is made up of the valve assembly of oil circuit in the pump case piece that generates braking oil pressure and motor assembly and the control brake loop; The structure of said pump case piece all is in a pump case, to insert a plurality of pistons usually, plays pumping action according to the power that said motor provided.

Summary of the invention

The present invention designs according to aforesaid necessity; Its purpose is to provide a kind of diversified function that vehicle has of tackling; Not only generate sufficient braking oil pressure quickly and accurately and offer vehicle, and ensure the pump case piece of sufficient durability with the Security of raising braking device.

Technological scheme

For realizing aforesaid purpose, pump case piece of the present invention is to comprise the drive hole that is used to insert running shaft; Formation distributes perpendicular on a plurality of planes, respectively having of one's own of said running shaft and mutual isolation is two, each has a plurality of pumping cylinders that piston inserts; The pumping cylinder of said each Cheng Shuan is that center pump case relative and that connection point-blank forms consists of characteristics with said drive hole.

Beneficial effect

The present invention can give the various functions of vehicle, generates sufficient braking oil pressure rapidly, exactly, thereby the performance and the Security of braking device can be provided.

And, can reduce braking distance to greatest extent through sufficient braking oil pressure is provided, thereby can realize keeping vehicle headway and automatic emergency brake system, additional function such as the braking system of bringing back to life.

In addition, because of on a plurality of planes, possessing a plurality of pumping cylinders respectively, shared volume is less, so can realize lightweight.

In addition, make adjacent pumping cylinder phase place different separately and intersect to form, thereby guarantee that in usable range thickness reaches the purpose that improves pump case piece durability to greatest extent.

Description of drawings

Fig. 1 is an oblique drawing of representing the pump case piece according to the present invention;

Fig. 2 and Fig. 3 are respectively the left view and the right elevations of pump case piece among Fig. 1;

Fig. 4 is the pumping cylinder distribution map on one section plane from the IV line cross section of Fig. 2, being seen;

Fig. 5 is the pumping cylinder distribution map on two sections planes from the V line cross section of Fig. 2, being seen;

Fig. 6 is the pumping cylinder distribution map on three sections planes from the VI line cross section of Fig. 2, being seen;

Fig. 7 is the schematic representation of said pump case piece behind the motor of removing Fig. 2;

Fig. 8 is the figure that representes to compare together the phase place of the eccentric cam on each plane;

Fig. 9 is illustrated in the braking oil pressure plotted curve that symmetrical 180 degree distribute on each plane two pumping cylinders are discharged;

Figure 10 is distributed in the braking oil pressure that pumping cylinder spued on three planes of the pump case piece plotted curve that spues to spue with the space changing phase place of 120 degree separately on each plane in the present embodiment;

Figure 11 is the plotted curve of the braking oil pressure that a certain loop spued of the pump case piece of expression present embodiment;

Figure 12 is expression actual curve to the acting braking oil pressure of master cylinder from the pump case piece of present embodiment.

Symbol description:

1: drive hole

1-1,1-2,2-1,2-2,3-1,3-2: pumping cylinder

5: the pump case piece

7: piston

9-1,9-2,9-3: eccentric cam

11: motor.

Embodiment

In the present embodiment; The formed plane of said pumping cylinder has three; If claim successively that according to the direction of running shaft they are section plane, one section plane to three; Structure is that the pumping cylinder on said one section plane forms with identical phase place with two sections plane pumping cylinders, and has only the pumping cylinder on said two sections planes to form with out of phase.

That is, as shown in Figure 1, it is each other eccentric to have said each plane on the said running shaft, most the eccentric cam 9-1 that phase place is different, and 9-2,9-3 is with piston 7 pressurizations of on the pumping cylinder on said each plane, inserting.Here, said running shaft is rotated by motor driving.At this moment, in the present embodiment, said motor 11 is fixedly mounted on the said pump case piece 5, and said running shaft can be made up of the running shaft of motor 11.

Fig. 2 and Fig. 3 are the left view and the right elevations of pump case piece, and its composition is as shown in the figure, said pump case piece 5 and be used to insert the drive hole 1 of running shaft; Formation respectively has two a plurality of pumping cylinder 1-1,1-2,2-1,2-2,3-1,3-2 that distribute, respectively have piston to insert of one's own perpendicular to the mutual isolation on the said running shaft on a plurality of planes; The pumping cylinder of said Cheng Shuan is as shown in Figure 4, comprises with said drive hole 1 being that the center is communicated with the pump case 5 that forms relatively and point-blank.

At this moment, Fig. 4 to Fig. 6 is the pumping cylinder distribution map on three sections planes seeing on the pumping cylinder distribution map, VI line cross section on two sections planes seeing on the pumping cylinder distribution map of having seen one section plane on each comfortable IV line cross section, the V line cross section.That is, as shown in the figurely on a plurality of planes, form a plurality of pumping cylinders respectively, make and both reduced the volume that takies, can form sufficient flow again, and guarantee durability.

The plane adjacent distributions that said pumping cylinder forms, and each pumping cylinder of adjacent plane is as shown in Figure 7, is that the center is oppositely arranged with said drive hole 1 is with the out of phase formation of staggering.

That is to say that in order to reduce the whole volume of pump case 5, adjacent distributions is wanted on the plane that said pumping cylinder forms, adjacent pumping cylinder will let staggering with out of phase of they simultaneously, obtaining in limited scope thickness to greatest extent, thereby realizes the durability of pump case 5.

Distance between each pumping cylinder in the said adjacent plane distributes with the maximum diameter of each pumping cylinder identically.That is, as shown in Figure 2, the distance C between each pumping cylinder is identical with the maximum dimension D of each pumping cylinder.

Said distance C; If suitably arrange distance and the relation between the pumping cylinder diameter between said each plane; Making every effort to reducing of pump case 5 overall volume, but the too narrow low value that designs that causes pump case 5 durability between the space portion that prevents to form because of pumping cylinder is also harmless.

With reference to figure 8, each eccentric cam that each plane has, whenever said running shaft rotation 60 degree, each pumping cylinder on said one section plane, three sections planes and two sections planes is pressed 1-1,1-2,3-1,3-2,2-1,2-2 sequential operation.And the pumping cylinder 2-1 on said two sections planes, 2-2 compare the pumping cylinder 2-1 on said a section plane pumping cylinder 1-1,1-2 and two sections planes, the phase place that 2-2 forms forms the phase angle that rotates 60 degree at least.That is, as shown in Figure 8, the formed phase angle θ of pumping cylinder 1-1, the 1-2 on the pumping cylinder 2-1 on said two sections planes, 2-2 and said one section plane can form 60 degree at least.

Therefore, if the phase angle θ that pumping cylinder 2-1, the 2-2 on said two sections planes are had with the pumping cylinder 1-1 on said one section plane, pumping cylinder 3-1, the 3-2 on 1-2 and said three sections planes are as the criterion, and can be defined in the acute angle scope.

Then; Distribution according to the distribution of aforesaid pumping cylinder 1-1,1-2,2-1,2-2,3-1,3-2 and said eccentric cam 9-1,9-2,9-3; In said pump case piece along with the braking oil pressure that rotation spued of said running shaft with the order on one section plane and three sections planes and the two sections planes pressure maximum that spues; Its direction is the center with said drive hole 1 then; The pressure maximum that in the opposite direction spues in turn, thereby minimize pulsation on the whole, the vibrations that produce with the running of pump also are cancelled each other.Promptly; Set angular dependence between the eccentric cam on each plane so that the minimize pulsation of the braking oil pressure that spues to master cylinder; If said plane forms n layer, consider the distribution angle of the pump on each plane so, set every 360/n phase place for discharge-amount is evenly distributed.

Fig. 9 representes two braking oil pressures that pumping cylinder is discharged that symmetrical 180 degree distribute on each plane, and in one plane symmetrically relative two pumping cylinders, as shown in the figure with the braking oil pressure that the rotation of eccentric cam is discharged, the formation of its phase place is opposite fully.

Aforesaid braking oil pressure on each plane is spued combination of features together; Just can obtain the characteristics that spue like Figure 10; The braking oil pressure that pumping cylinder spued that promptly on three planes, distributes all lets it form out of phase with the interval of 120 degree (360/n:n=3) separately and spues on each plane.

Usually, in the vehicle braked device, form by two loops, when master cylinder is in non-braking state, have two structures that the loop links in the servosteering oil can with the loop that master cylinder connects.Here, the pump case piece of present embodiment forms a loop by any three and is connected on the said master cylinder in amounting to six pumping cylinders.

At this moment; Diagrammatic representation is by the braking oil pressure that a certain loop spued in the said pump case piece, like Figure 11, here; Braking oil pressure is by the pumping cylinder 1-2 on three planes that are distributed in above the drawing, 2-2,3-2 output, overlapping by the braking oil pressure of pumping cylinder output practical function in the loop.

Certainly, the braking oil pressure of aforesaid morphological reduplication forms on the another one loop too.That is,, shown in figure 12ly just can know by said pump case piece to the acting braking oil pressure of master cylinder reality if calculate making a concerted effort of said two loop braking oil pressures.At this moment, the height of vertical peak of Figure 12 demonstrates 2 times of vertical peak height of Figure 11.

Claims

1. a pump case piece is characterized in that, comprising: the drive hole that is used to insert running shaft;

Formation is perpendicular to the two a plurality of pumping cylinders that distribute and the piston insertion is respectively arranged of on a plurality of planes, respectively having of one's own of said running shaft and mutual isolation;

Said each paired pumping cylinder is that center pump case relative and that connection point-blank forms is formed with said drive hole.

2. according to the said pump case piece of claim 1, it is characterized in that said pumping cylinder is with respect to the plane adjacent distributions that forms;

Adjacent pumping cylinder is that the center is relative with said drive hole, with the different phase formation of staggering.

3. according to the said pump case piece of claim 2, it is characterized in that the distance between each pumping cylinder of said adjacent plane is with the maximum diameter same distribution of each pumping cylinder.

4. according to the said pump case piece of claim 3; It is characterized in that; The plane that said pumping cylinder forms relatively is three; Be followed successively by section plane, one section plane to three according to said running shaft direction, the pumping cylinder on the pumping cylinder on said one section plane and three sections planes forms with identical phase place, and has only the pumping cylinder on said two sections planes to form with different phase.

5. according to the said pump case piece of claim 4, it is characterized in that having eccentric, that phase place the is different each other a plurality of eccentric cams in said plane on the said running shaft, to the piston pressurization of the pumping cylinder that is inserted into said each plane.

6. according to the said pump case piece of claim 5; It is characterized in that; Each eccentric cam that has on said each plane is spent in the angle of swing of 180 degree at 0 of said running shaft; Equalization is cut apart the phase angle of said angle of swing, and the pumping cylinder on said one section plane, three sections planes, two sections planes moves in order.

7. according to the said pump case piece of claim 4, it is characterized in that the phase angle of the pumping cylinder on said two sections planes is as the criterion with the phase angle of the pumping cylinder on the pumping cylinder on said one section plane and said three sections planes, belongs to acute angle.