CN201047804Y - Brake master cylinder vacuum seal testing bench - Google Patents
Brake master cylinder vacuum seal testing bench Download PDFInfo
- Publication number
- CN201047804Y CN201047804Y CNU2007201088072U CN200720108807U CN201047804Y CN 201047804 Y CN201047804 Y CN 201047804Y CN U2007201088072 U CNU2007201088072 U CN U2007201088072U CN 200720108807 U CN200720108807 U CN 200720108807U CN 201047804 Y CN201047804 Y CN 201047804Y
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- CN
- China
- Prior art keywords
- master cylinder
- packoff
- cylinder
- head
- seal
- 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 - Lifetime
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Abstract
The utility model relates to an auto part check-out facility, in particular to a brake master cylinder vacuum sealing test platform which is characterized in that a 1st-level seal device of the brake master cylinder is externally provided with an airproof chamber connecting with a vacuum generator, and the air passage on a seal head is also connected with a corresponding vacuum generator. The purpose is to design a brake master cylinder vacuum sealing test platform which is characterized by easy detection and simple structure. Compared with the prior art, the utility model has the advantages of low production cost, reliable airproof, easy load and unload.
Description
Technical field
The utility model relates to the auto parts machinery checkout equipment, particularly relates to a kind of braking main cylinder vacuum sealing test bench.
Background technology
Master cylinder is the key parts of auto parts machinery, and it is made of Master cylinder body, double-piston, level Four packoff.Judging whether a master cylinder is qualified, mainly is whether the sealing property that will detect the level Four packoff reaches requirement.Traditional detection method adopts the pressure integrity test method, its corresponding pressure integrity test platform comprises stand, braking master cylinder fuel inlet hole packoff, master cylinder afterbody hold down gag, master cylinder manoeuvring test device, wherein, braking master cylinder fuel inlet hole packoff is by cylinder, seal head constitutes, seal head is provided with airway, master cylinder manoeuvring test device is by digital cylinder, mobile putter constitutes, mobile putter withstands on the master cylinder first piston head, its principle is according to level Four packoff four annular seal space structures forming of diverse location each other, in annular seal space, import pressurized air one by one by the airway segmentation on the seal head, variation falls in the air pressure of observing inner chamber, detect the sealing property of judging the level Four packoff, thereby judge whether master cylinder is qualified.By practice, we recognize that there are a lot of drawbacks in traditional test method: 1, whole test device structure complexity, and design difficulty is big, and expense is comparatively expensive; 2, the adjustment of equipment trouble, the sealing difficulty; 3, because the turnover oilhole of master cylinder all will carry out seal approach, so the cylinder of a lot of sealing usefulness that distributed around the workpiece, very inconvenient when making work-handling; 4, owing to will import pressurized air, can bring some moisture, greasy dirt into unavoidably, bring hidden danger of quality to product easily to inner chamber.
Summary of the invention
The purpose of this utility model is a kind of braking main cylinder vacuum sealing test bench easy to detect, simple in structure of design.
In order to achieve the above object, the utility model adopts following technical solution: a kind of braking main cylinder vacuum sealing test bench, comprise stand, braking master cylinder fuel inlet hole packoff, master cylinder afterbody hold down gag, master cylinder manoeuvring test device, wherein, braking master cylinder fuel inlet hole packoff is by cylinder, seal head constitutes, seal head is provided with airway, master cylinder manoeuvring test device is by digital cylinder, mobile putter constitutes, mobile putter withstands on the master cylinder first piston head, it is characterized in that being provided with closed chamber in master cylinder first order packoff periphery, closed chamber is connected with vacuum generator, and the airway on the seal head also connects corresponding vacuum generator.
Because this testing table is on the basis that utilizes four annular seal space structures of master cylinder self, put in order and add an auxiliary seal chamber, vacuumize from five annular seal spaces one by one by segmentation, make the certain draught head of the inside and outside formation of annular seal space, variation falls in the air pressure of observing inner chamber, if cause extraneous air to infiltrate owing to the sealing property of packoff is defective, then the air pressure general who has surrendered of inner chamber exceeds zone of reasonableness, can judge that then this place's packoff is defective; Otherwise, can prove that then the sealing property of this place's packoff is intact.Its test principle is just gone with anti-its road of traditional test principle, saved the packoff that traditional being used to seals oil outlet, make that the space of test table top is openr, structure is simpler, the loading and unloading step reduces, detect more convenient, cost reduces greatly, approximately has only half price of traditional experiment platform.
Description of drawings
Below in conjunction with accompanying drawing, embodiment and vacuum test test method(s) the utility model is described in further detail.
Fig. 1 is the present embodiment structural representation.
Fig. 2 is detected product structure sample drawing.
Fig. 3 is level Four packoff position mobile status figure each other in the detected product test process of the test.
Embodiment
As Fig. 1, shown in Figure 2, present embodiment comprises stand 1, braking master cylinder fuel inlet hole packoff, master cylinder afterbody hold down gag, master cylinder manoeuvring test device, wherein, braking master cylinder fuel inlet hole packoff is by cylinder 2, seal head 3 constitutes, seal head 3 is provided with airway, master cylinder manoeuvring test device is by digital cylinder 17, mobile putter 16 constitutes, mobile putter 16 withstands on the master cylinder first piston head, be provided with closed chamber 14 in master cylinder first order packoff 13 peripheries, closed chamber 14 comprises housing 15, O-ring seal 18,12, housing is provided with inner chamber, inner chamber one end is socketed on the mobile putter 16, and O-ring seal 18 is located between the joint face, and the inner chamber other end is braked 20 supportings of master cylinder head, O-ring seal 12 is located at this supporting position, two O-ring seals 18, the space that constitutes between 12 forms closed chamber 14.Closed chamber 14 is connected with vacuum generator (not drawing among the figure) by air extraction connector 19, and the airway on the seal head 3 also connects corresponding vacuum generator (not drawing among the figure).
Be applied to master cylinder level Four packoff testing experiment with regard to present embodiment below and carry out aid illustration.
1, test first order packoff 13:
(1) by vacuum generator closed chamber 14 is vacuumized, make the closed chamber internal gas pressure reach certain negative pressure (0.026Mpa);
(2) pressurize certain hour checks that by vacuum manometer the pressure in the closed chamber falls whether surpass the regulation requirement, can judge whether first order packoff 13 is qualified.
2, test second level packoff 11:
(1) oil-feed emptying aperture 4 sealings that utilize braking master cylinder fuel inlet hole packoff that a master cylinder left side is surveyed;
(2) digital cylinder advances by mobile putter 16 promotion left pistons, forward travel distance is greater than 5mm, because second level packoff 11 is positioned on the left piston, when this piston forward is advanced to surpass a segment distance (surpassing 5mm), the compensate opening 10 that then is positioned at left oil supply hole is cut off (as shown in Figure 3) with the oil-out path, then forms an annular seal space in second level packoff 11 left sides;
(3) vacuum generator vacuumizes by the annular seal space of the airway on the left seal head to above-mentioned formation, makes air pressure reach certain negative pressure (0.026Mpa);
(4) pressurize certain hour checks that by vacuum manometer the pressure in the annular seal space falls whether surpass the regulation requirement, can judge whether second level packoff is qualified.
Because the test method of two-stage packoff is similar in addition, has just repeated no more here.
In sum, the utility model is when possessing even reaching better test objective. Not only overcome the various shortcoming of traditional pressure integrity test method, also possessed following excellent The point:
1, cheap. Because saved traditional sealing air cylinder that is used for the sealing oil outlet, with And the improvement at other positions, so that cost reduces greatly, approximately only have half of traditional experiment platform Price. This is so that allow numerous economic strengths not be that the very strong private entrepreneur accepts to become possibility.
3, sealing is reliable.
3, easy to loading and unloading. Owing to saved traditional sealing air cylinder that is used for the sealing oil outlet, made The space that must test table top is openr, makes things convenient for the loading and unloading of workpiece.
4, guaranteed product quality.Only inner chamber is vacuumized during the utility model test, some moisture, greasy dirt can not brought in the master cylinder, can not bring hidden danger product quality.
Claims (2)
1. braking main cylinder vacuum sealing test bench, comprise stand (1), braking master cylinder fuel inlet hole packoff, master cylinder afterbody hold down gag, master cylinder manoeuvring test device, wherein, braking master cylinder fuel inlet hole packoff is by cylinder (2), seal head (3) constitutes, seal head (3) is provided with airway, master cylinder manoeuvring test device is by digital cylinder (17), mobile putter (16) constitutes, mobile putter (16) withstands on the master cylinder first piston head, it is characterized in that being provided with closed chamber (14) in master cylinder first order packoff (13) periphery, closed chamber (14) is connected with vacuum generator, and the airway on the seal head (3) also connects corresponding vacuum generator.
2. braking main cylinder vacuum sealing test bench according to claim 1, it is characterized in that closed chamber (14) comprises housing (15), O-ring seal (18), (12), housing is provided with inner chamber, inner chamber one end is socketed on the mobile putter (16), O-ring seal (18) is located between the joint face, the inner chamber other end is braked master cylinder head (20) supporting, and O-ring seal (12) is located at this supporting position, and the space that constitutes between two O-ring seals (18), (12) forms closed chamber (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201088072U CN201047804Y (en) | 2007-04-27 | 2007-04-27 | Brake master cylinder vacuum seal testing bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201088072U CN201047804Y (en) | 2007-04-27 | 2007-04-27 | Brake master cylinder vacuum seal testing bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201047804Y true CN201047804Y (en) | 2008-04-16 |
Family
ID=39300392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201088072U Expired - Lifetime CN201047804Y (en) | 2007-04-27 | 2007-04-27 | Brake master cylinder vacuum seal testing bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201047804Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886975A (en) * | 2009-05-15 | 2010-11-17 | 上海汽车制动系统有限公司 | Method for measuring flexibility of piston of brake caliper under low pressure on line |
| CN102095589B (en) * | 2009-12-15 | 2013-08-21 | 东风德纳车桥有限公司 | Air-tightness detection device for automobile axle assembly |
-
2007
- 2007-04-27 CN CNU2007201088072U patent/CN201047804Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886975A (en) * | 2009-05-15 | 2010-11-17 | 上海汽车制动系统有限公司 | Method for measuring flexibility of piston of brake caliper under low pressure on line |
| CN102095589B (en) * | 2009-12-15 | 2013-08-21 | 东风德纳车桥有限公司 | Air-tightness detection device for automobile axle assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070427 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |