CN201096062Y - ABS plunger pump structure - Google Patents
ABS plunger pump structure Download PDFInfo
- Publication number
- CN201096062Y CN201096062Y CNU2007201144335U CN200720114433U CN201096062Y CN 201096062 Y CN201096062 Y CN 201096062Y CN U2007201144335 U CNU2007201144335 U CN U2007201144335U CN 200720114433 U CN200720114433 U CN 200720114433U CN 201096062 Y CN201096062 Y CN 201096062Y
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- CN
- China
- Prior art keywords
- plunger
- cavity
- plunger cavity
- assembly
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to the field of a breaking system of the automotive engineering, in particular to the improvement of a plunger pump structure used in an automotive anti-lock breaking system. The utility model comprises a main body and an inner plunger piston, and diameters of external ends of ends of a plunger cavity assembly and a plunger cavity close cover are bigger than the diameter of relevant position of a plunger channel. Interference fit connection is adopted when the plunger cavity assembly and the plunger cavity close cover are coordinated with the plunger channel. A high pressure pipeline is arranged inside the main body, and a low pressure pipeline is arranged outside to be close to the plunger cavity close cover. The axial direction machining length of the piston channel in the main body of the plunger pump is shortened, and the diameter of the plunger channel is enlarged. The machining is convenient, and machining accuracy is ensured.
Description
Technical field
The utility model relates to a kind of automotive engineering braking system field, especially a kind of improvement that is used for the plunger pump structure that anti-block braking system of car uses.
Background technique
Use plunger pump to realize refluxing, finally reach the control riding stability or drive anti-skidding function in the anti-lock braking system in automobiles (ABS), prevent phenomenon such as sideslip that wheel lock up produces, whipping and drive the generation of skidding, guarantee control stability, shorten stopping distance.
Be provided with plunger channel in the body of the plunger pump that uses in the existing antilock braking system (ABS), in be provided with plunger cavity, the sidewall of plunger cavity is provided with high pressure pipe line and low pressure pipeline, and high pressure pipe line is near the outside of body, port from plunger channel is nearer, low pressure pipeline is in the inside of body, port from plunger channel is far away, plunger channel axial distance and plunger channel diameter ratio are bigger, increased the difficulty of processing, the inner phenomenon that scratches of plunger cavity appears in work in-process easily, and because the required precision height of plunger channel has prolonged the time of processing; Plunger cavity is provided with sealing cover in the port part of plunger channel, be with seal ring on the sealing cover, sealing cover adopts with body and is threaded, when fitting tight was covered, the seal ring on the sealing cover destroyed easily, and the high pressure pipe line of plunger cavity is near the port of plunger channel, work under the long hyperbaric environment of seal ring, must improve the whole requirement of seal ring, increase cost, also influence working life easily.
Summary of the invention
The utility model has solved available technology adopting and has been threaded and fixes plunger cavity, destroy the shortcoming that seal ring influences sealing effect easily, provide a kind of employing interference press fit to fix plunger cavity, effectively solve the new A BS plunger pump structure that the seal ring breakage that causes is assembled in rotation.
The utility model has also solved prior art mesohigh pipeline in the outside, low pressure pipeline is in the inboard, seal ring is worked long hours in hyperbaric environment, need to improve the performance requirement of seal ring, also influence the shortcoming in working life easily, provide a kind of the internal work environment is adjusted in high pressure pipe line and low pressure pipeline conversion, improve the new A BS plunger pump structure in working life.
It is excessive with the ratio of the distance of the diameter of plunger channel that the utility model has also solved in the prior art in the body axial distance of plunger channel, increase the difficulty of processing, work in-process scratches the shortcoming of the inwall of plunger channel easily, provide a kind of diameter of plunger channel big, the axial distance of plunger channel is short, reduces the new A BS plunger pump structure of difficulty of processing.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of new A BS plunger pump structure, comprise body and inner plunger, high pressure pipe line and low pressure pipeline communicate with plunger respectively on the body, be provided with steel ball in the plunger, steel ball separates high pressure pipe line and low pressure pipeline by elastic element, wherein, described body is provided with plunger channel, and described plunger comprises the plunger piston assembly and the plunger cavity capping of plunger cavity assembly, plunger cavity inside; The outermost diameter of the end of plunger cavity assembly and plunger cavity capping adopts interference to be connected greater than the diameter of plunger channel relevant position when matching with plunger channel; High pressure pipe line is in the inboard of body, and low pressure pipeline is close plunger cavity capping in the outside.With plunger piston assembly as plunger work, can in the plunger cavity assembly, slide, plunger cavity assembly and body employing interference fit are fixed and are sealed, enlarged the diameter of plunger channel, directly press fit is simple in structure, easy for installation, the precision of processing and quality are more prone to guarantee, improve the yield rate of product; High pressure pipe line is arranged on the inboard, and low pressure pipeline is arranged on the outside near the plunger cavity capping, and inner plunger is operated under the rational pressure environment, can effectively improve whole working life.
As preferably, the end construction of the end of plunger cavity assembly and plunger cavity capping is similar, all adopt two sections, match by the diameter of one section of lining and the relevant position of plunger channel, the centre is that neck links to each other with outermost end, the diameter of the diameter of outermost end plunger channel of relevant position when cooperating forms interference fit, plays fixing and seal action.The diameter of neck forms an annular groove less than the diameter of its both sides, and the distortion when being used for being adjusted at press fit prevents to be out of shape excessive influence sealing.
Be provided with a plunger cavity filter screen that entangles plunger cavity assembly end face between the inner face of the end face of plunger cavity assembly and plunger cavity capping.
As preferably, plunger piston assembly is provided with plunger at the head of body interior one end and connects jump ring.
It is arc that plunger connects jump ring, and the shape of shape and intrinsic cavity matches.Plunger jump ring one end links to each other with the head of plunger piston assembly, and an end links to each other with eccentric motor, finishes the to-and-fro motion of plunger piston assembly during the eccentric motor running by the plunger jump ring, has further shortened the axial length of body inner plunger passage.
Be provided with radial passage near the position of high pressure pipe line on the plunger cavity assembly, radial passage is communicated with the cavity at the interior steel ball place of plunger cavity assembly, is provided with bead and compresses by the elastomer that is fixed on the plunger cavity assembly sidewall in the export department of radial passage.Elastomer compresses bead, makes bead seal radial passage high pressure pipe line and radial passage are disconnected, and forms an one-way valve structures, and matching with the steel ball of inside forms the twice safety control.
Plunger piston assembly and plunger cavity assembly are Spielpassung, and are provided with the type ring between two adjacent surfaces.Plunger piston assembly and plunger cavity assembly can slide mutually, the type ring is set between two adjacent surfaces can prevents to reveal from two adjacent surfaces.
The beneficial effects of the utility model are: adopt plunger piston assembly and plunger cavity general name to assist nested structure, head at plunger piston assembly is provided with the axial processing length that all plug connection jump rings have shortened all plug passages of plunger pump body interior, enlarged the diameter of plunger channel, convenient processing guarantees machining accuracy; The diameter of the end of Zhu Sai chamber assembly and plunger cavity capping adopts pressurization to form interference and connects greater than the diameter of plunger channel corresponding position, and is easy for installation, good sealing effect, the seal ring that protection is inner; Adopt the little neck of diameter to connect at the interference position and can adjust the distortion that extruding causes, prevent the phenomenon of poor sealing.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model;
Among the figure: 1, body, 2, plunger channel, 3, the plunger cavity assembly, 4, plunger piston assembly, 5, high pressure pipe line, 6, low pressure pipeline, 7, plunger cavity capping, 8, the plunger cavity filter screen, 9, plunger connects jump ring, 10, radial passage, 11, bead, 12, elastomer, 13, seal ring, 14, type ring, 15, steel ball, 16, neck.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of new A BS plunger pump structure (referring to accompanying drawing 1), comprise body 1 and inner plunger, body is provided with plunger channel 2, plunger comprises plunger cavity assembly 3 and plunger cavity capping 7, Zhu Sai chamber assembly and plunger channel fitting surface are provided with seal ring 13, and the outermost diameter of the end of plunger cavity assembly and plunger cavity capping is greater than the diameter of plunger channel relevant position.
Two sections of the end portion of plunger cavity assembly, match by the diameter of one section of lining and the relevant position of plunger channel, the centre is that neck 16 links to each other with outermost end, adopt the extrusion-deformation interference to be connected when matching with plunger channel, neutral position near the plunger cavity assembly is provided with high pressure pipe line 5, is provided with low pressure pipeline 6 near plunger cavity capping place.
Plunger piston assembly 4 is equipped with in the cooperation of plunger cavity assembly internal clearance, and between two adjacent surfaces, be provided with type ring 14, the end of plunger piston assembly is provided with steel ball 15 by spring, steel ball compresses an outlet of plunger cavity assembly, the head of plunger piston assembly is provided with plunger and connects jump ring 9, it is arc that plunger connects jump ring, and the shape of shape and intrinsic cavity matches.
Position near high pressure pipe line on the plunger cavity assembly is provided with radial passage 10, radial passage is communicated with the cavity at steel ball place in the plunger cavity assembly, be provided with bead 11 and compress in the export department of radial passage, be provided with a plunger cavity filter screen 8 that entangles plunger cavity assembly end face between the inner face of the end face of plunger cavity assembly and plunger cavity capping by the elastomer 12 that is fixed on the plunger cavity assembly sidewall.
On body, process plunger channel, plunger cavity assembly 3 after will assembling then is press-fit into place, and at last the plunger cavity capping is press-fited, and the extrusion-deformation of certain magnitude of interference is arranged by plunger cavity assembly and plunger cavity capping two places, plunger cavity assembly and plunger cavity capping is fastening, play the effect of sealing simultaneously.
Plunger pump in the course of the work, rely on plunger to connect jump ring 9, the to-and-fro motion of plunger piston assembly 4 when finishing the eccentric motor running: when the eccentric motor far point moves upward, plunger connects jump ring 9 drive plunger piston assembly 4 and moves upward, plunger cavity assembly 3 internal pressures reduce, steel ball 15 is opened, and brake fluid is inhaled in the plunger cavity assembly 3; When the motor far point begins to move downward, plunger piston assembly 4 moves downward under the drive of plunger connection jump ring 9, steel ball 15 is return under spring action, plunger cavity assembly 3 internal pressures increase, cut the steel ball on the plunger piston assembly 3 open, brake fluid enters high tension loop, the eccentric motor to-and-fro motion, thus finish the backflow of low tension loop end brake fluid.
Claims (8)
1, a kind of new A BS plunger pump structure, comprise body (1) and inner plunger, high pressure pipe line on the body (5) and low pressure pipeline (6) communicate with plunger respectively, be provided with steel ball (15) in the plunger, steel ball separates high pressure pipe line and low pressure pipeline by elastic element, it is characterized in that described body is provided with plunger channel (2), described plunger comprises the plunger piston assembly (4) and the plunger cavity capping (7) of plunger cavity assembly (3), plunger cavity inside; The outermost diameter of the end of plunger cavity assembly and plunger cavity capping adopts interference to be connected greater than the diameter of plunger channel relevant position when matching with plunger channel; High pressure pipe line is in the inboard of body, and low pressure pipeline is close plunger cavity capping in the outside.
2, new A BS plunger pump structure according to claim 1 is characterized in that matching two sections of the end portion of described plunger cavity assembly by the diameter of one section of lining and the relevant position of plunger channel, and the centre is that neck (16) links to each other with outermost end.
3, new A BS plunger pump structure according to claim 1 is characterized in that matching two sections of the end portion of described plunger cavity capping by the diameter of one section of lining and the relevant position of plunger channel, and the centre is that neck links to each other with outermost end.
4, new A BS plunger pump structure according to claim 1 is characterized in that being provided with a plunger cavity filter screen (8) that entangles plunger cavity assembly end face between the inner face of the end face of plunger cavity assembly and plunger cavity capping.
5, new A BS plunger pump structure according to claim 1 is characterized in that described plunger piston assembly is provided with plunger connection jump ring (9) at the head of body interior one end.
6, new A BS plunger pump structure according to claim 5 is characterized in that it is arc that described plunger connects jump ring, and the shape of shape and intrinsic cavity matches.
7, new A BS plunger pump structure according to claim 1, it is characterized in that the position near high pressure pipe line is provided with radial passage (10) on the described plunger cavity assembly, the cavity at steel ball place is communicated with in radial passage and the plunger cavity assembly, is provided with bead (11) and compresses by the elastomer (12) that is fixed on the plunger cavity assembly sidewall in the export department of radial passage.
8, new A BS plunger pump structure according to claim 1 is characterized in that described plunger piston assembly and plunger cavity assembly are Spielpassung, and be provided with the type ring between two adjacent surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201144335U CN201096062Y (en) | 2007-09-25 | 2007-09-25 | ABS plunger pump structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201144335U CN201096062Y (en) | 2007-09-25 | 2007-09-25 | ABS plunger pump structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201096062Y true CN201096062Y (en) | 2008-08-06 |
Family
ID=39923115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201144335U Expired - Fee Related CN201096062Y (en) | 2007-09-25 | 2007-09-25 | ABS plunger pump structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201096062Y (en) |
-
2007
- 2007-09-25 CN CNU2007201144335U patent/CN201096062Y/en not_active Expired - Fee Related
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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: 20080806 Termination date: 20160925 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |