Leakage test tool for pump case of automobile brake system

Abstract

The utility model discloses an automobile brake system pump casing leakage test tool which comprises a support platform and a slide rail flat plate arranged on the support platform, a slide seat is arranged on the slide rail flat plate, a pump casing assembling seat is arranged on the slide seat, and an air inlet connecting port which is matched with a channel port at the bottom of an inner cavity of an automobile brake system pump casing in an aligned mode is arranged on the pump casing assembling seat. An air inlet connector connected with external air inlet equipment is formed in the position, below the air inlet connecting opening, of the lower surface of the pump shell assembling base, and a sealing mechanism used for conducting self-adaptive plugging on two channel openings, in the side portion of the pump shell, of an inner cavity of the automobile braking system pump shell is arranged on one side of the pump shell assembling base. The upper end of the stand column is provided with an elastic connecting mechanism which is used for carrying out alignment matching on an inner cavity of the automobile braking system pump shell at a channel opening in the top of the inner cavity, and the inner cavity of the automobile braking system pump shell is connected with an external leakage tester through the elastic connecting mechanism. According to the tool, flexible and self-adaptive plugging alignment can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile brake system pump shell leakage test, specifically relates to a kind of test flexible automobile brake system pump shell leakage test tool. BACKGROUND

[0002] Pump leakage test is a very key test work, mainly for detecting whether there is oil leakage or leakage in the use of pump. Pump leakage test is mainly divided into two methods, one is water pressure test method, and the other is air tightness test method. Among them, water pressure test method is mainly to close the inlet and outlet of pump, then a certain amount of water is injected into pump body, and is pressurized to a certain degree, whether there is water flow on the surface of pump is observed to judge whether there is leakage phenomenon in pump. And air tightness test method is to detect pump by using special air tightness detection instrument, whether there is gas leakage in pump is observed to judge whether there is leakage problem in pump. The existing automobile brake system pump shell leakage test is mostly completed by air tightness test method, but the existing leakage test tool has poor flexibility, when the spacing of two channel openings in the side of pump shell has tolerance, the standard plug is difficult to accurately adapt to the two channel openings in the side of pump shell with spacing tolerance, and the test flexibility is poor. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a kind of test flexible automobile brake system pump shell leakage test tool.

[0004] The technical scheme adopted by the utility model to realize the above technical effects is:

[0005] A kind of automobile brake system pump shell leakage test tool is used to carry out leakage test on automobile brake system pump shell, wherein, including support platform, the support platform is equipped with slide rail plate, the slide rail plate is equipped with the slide seat that can be horizontally slidably adjusted, the slide seat is equipped with pump shell assembly seat through support column, the pump shell assembly seat is formed with assembly port for assembling automobile brake system pump shell and air inlet connection port matched with the channel opening in the bottom of the internal cavity of automobile brake system pump shell, the air inlet connection port is formed with air inlet interface connected with external air inlet equipment downward the lower surface of the pump shell assembly seat, one side of the pump shell assembly seat is equipped with sealing mechanism for self-adapting plugging the two channel openings in the side of the internal cavity of automobile brake system pump shell, the support platform is equipped with stand column, the upper end of the stand column is equipped with elastic connection mechanism for the channel opening in the top of the internal cavity of automobile brake system pump shell is matched, the internal cavity of automobile brake system pump shell is connected with external leakage tester by the elastic connection mechanism.

[0006] Preferably, in the above-mentioned automobile brake system pump shell leakage test tool, a first sealing ring is arranged around the air inlet connection port for sealing.

[0007] Preferably, in the above-mentioned automobile brake system pump shell leakage test tool, the sealing mechanism comprises an L-shaped linkage plate slidably arranged on the pump shell assembly seat, the L-shaped linkage plate is connected with a sliding adjustment mechanism and two plugging seats, an adaptive adjusting rod is arranged in the plugging seat, a plug connecting rod is arranged at the front end of the adaptive adjusting rod, a rubber plug is arranged at the end of the plug connecting rod, when the rubber plug is laterally pressed, the axis position of the adaptive adjusting rod is adaptively changed in the plugging seat, so that the spacing between the two rubber plugs is adapted to the spacing of the two passage openings at the side of the internal chamber of the automobile brake system pump shell.

[0008] Preferably, in the above-mentioned automobile brake system pump shell leakage test tool, an assembly cavity is formed in the plugging seat, the inner end of the adaptive adjusting rod is movably arranged in the assembly cavity, a buffer cavity is formed at the outer end of the adaptive adjusting rod, the plug connecting rod is arranged at one end of the buffer cavity, the cavity diameter of the assembly cavity is greater than the diameter of the inner end of the adaptive adjusting rod, a rubber ring groove is formed on the ring surface of the inner end of the adaptive adjusting rod, a rubber ring is sleeved in the rubber ring groove for automatically centering the adaptive adjusting rod in the assembly cavity.

[0009] Preferably, in the above-mentioned automobile brake system pump shell leakage test tool, the tail part of the plugging seat and the tail part of the adaptive adjusting rod are provided with a matching snap pin hole, the two plugging seats are connected through a snap pin.

[0010] Preferably, in the above-mentioned automobile brake system pump shell leakage test tool, the sliding adjustment mechanism comprises a handle seat and a guide rail fixed on the pump shell assembly seat, a curved arm handle and a movable drive connecting rod are fixed on the handle seat, the curved arm of the curved arm handle is connected with one end of the drive connecting rod, the other end of the drive connecting rod is fixedly connected with the L-shaped linkage plate, and the bottom of the L-shaped linkage plate is slidably sleeved on the guide rail.

[0011] Preferably, in the above-mentioned automobile brake system pump shell leakage test tool, the elastic connection mechanism comprises a fixed seat fixed on the upper end of the stand, a buffer seat connected with the fixed seat through four buffer springs, and a butt joint pipe arranged at the bottom of the buffer seat, the lower end of the butt joint pipe is matched with the passage opening at the top of the internal chamber of the automobile brake system pump shell, a second sealing ring is arranged around the opening, and an instrument interface for connecting an external leakage tester is arranged at the side of the butt joint pipe.

[0012] Preferably, in the above-mentioned automobile brake system pump shell leakage test tool, the upper end of the buffer spring column is sleeved with an adjusting sleeve capable of being adjusted up and down to adjust the spring pre-tightening force on the buffer spring column.

[0013] Preferably, in the above-mentioned automobile brake system pump shell leakage test tool, two parallel slide rails are arranged on the support platform, and the bottom of the sliding seat is slidably connected to the slide rails through sliding blocks.

[0014] The automobile brake system pump shell leakage test tool of the utility model has the advantages that the two channel openings of the pump shell side part with tolerances in spacing can be quickly and accurately aligned and plugged by the self-adapting sealing mechanism, and the automobile brake system pump shell to be tested is connected with the external leakage tester through the elastic connecting mechanism at the top, so that quick and flexible pump shell leakage test can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of one viewing angle of the utility model;

[0016] Figure 2 It is a test assembly structure diagram of the automobile brake system pump shell on the pump shell assembly seat of the utility model;

[0017] Figure 3 It is a structure diagram of the sealing mechanism on the pump shell assembly seat of the utility model;

[0018] Figure 4 It is a perspective view of the sealing mechanism of the utility model;

[0019] Figure 5 It is an assembly diagram of the plugging seat, self-adapting adjusting rod and rubber plug of the utility model;

[0020] Figure 6 It is a sectional view of the plugging seat, self-adapting adjusting rod and rubber plug of the utility model;

[0021] Figure 7 It is a perspective view of the top of the elastic connecting mechanism of the utility model from the viewing angle;

[0022] Figure 8 It is a perspective view of the bottom of the elastic connecting mechanism of the utility model from the viewing angle. DETAILED DESCRIPTION

[0023] In order to further understand the utility model, the utility model will be further described below with reference to the description, drawings and specific embodiments:

[0024] It should be noted that in the description of the utility model, the terms "vertical", "upper", "lower", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, "first", "second", "third", "fourth" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] It should be noted that in the description of the utility model, unless otherwise specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be connected through an intermediate medium, it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] Please refer to Figure 1 、 Figure 2 and Figure 3 As shown in the figure, the embodiment of the utility model provides a kind of automobile brake system pump shell leakage test tool, which is used to carry out leakage test to automobile brake system pump shell 100. Specifically, the test tool includes support platform 1, support platform 1 is equipped with slide rail plate 3, slide rail plate 3 is equipped with slide 4 that can be horizontally slidably adjusted, slide 4 is equipped with pump shell assembly seat 5 by support column, pump shell assembly seat 5 is formed with assembly port 51 for assembling automobile brake system pump shell 100 and air inlet connection port 52 with the bottom passage port of the internal cavity of automobile brake system pump shell 100. Wherein, as shown in Figure 3 , air inlet connection port 52 is formed with air inlet interface 54 connected with external air inlet equipment downward on the lower surface of pump shell assembly seat 5, one side of pump shell assembly seat 5 is equipped with sealing mechanism 6 for self-adapting plugging to the two passage ports of the internal cavity of automobile brake system pump shell 100 at its side. As Figure 1 And Figure 2As shown, the support platform 1 is provided with a stand 2, and the upper end of the stand 2 is provided with an elastic connecting mechanism 7 for aligning the passage opening at the top of the internal cavity of the automobile brake system pump shell 100, and the internal cavity of the automobile brake system pump shell 100 is connected with an external leakage tester through the elastic connecting mechanism 7. During testing, the automobile brake system pump shell 100 to be tested is first assembled on the pump shell assembly seat 5, the internal cavity of the automobile brake system pump shell 100 is connected with the external leakage tester through the elastic connecting mechanism 7, the two passage openings at the side of the internal cavity of the automobile brake system pump shell 100 are adaptively plugged by the sealing mechanism 6, then the external air inlet device fills the internal cavity of the automobile brake system pump shell 100 assembled on the pump shell assembly seat 5 with gas through the air inlet interface 54, the air pressure in the internal cavity of the automobile brake system pump shell 100 is maintained after a predetermined amount of gas is filled and the air inlet end is closed, the air pressure value is observed through the external leakage tester connected with the elastic connecting mechanism 7, and the air pressure value displayed by the external leakage tester is observed for a predetermined observation time, and if the air pressure value is stable, it indicates that the pump shell has good sealing performance, otherwise, it indicates that the pump shell has a leakage defect.

[0027] Further, in the preferred embodiment of the utility model, in order to prevent testing error, such as Figure 3 As shown, a first sealing ring 53 for sealing is arranged around the air inlet connection port 52, and the internal cavity of the automobile brake system pump shell 100 and the pump shell assembly seat 5 are circumferentially sealed at the joint end face of the air inlet connection port 52 through the first sealing ring 53, so that the gas in the internal cavity of the automobile brake system pump shell 100 after pressure maintaining is prevented from overflowing from the joint end face to cause testing error.

[0028] Further, in the preferred embodiment of the utility model, as shown in Figure 3 , Figure 4 and Figure 5 The sealing mechanism 6 comprises an L-shaped linkage plate 61 slidably arranged on the pump shell assembly seat 5, and the L-shaped linkage plate 61 is connected with a sliding adjustment mechanism 65 and two plugging seats 62. The plugging seat 62 is assembled with an adaptive adjustment rod 63, the front end of the adaptive adjustment rod 63 is assembled with a plug connecting rod 641, and the end of the plug connecting rod 641 is provided with a rubber plug 64. When the rubber plug 64 is laterally extruded, the axis position of the adaptive adjustment rod 63 is adaptively changed in the plugging seat 62, so that the distance between the two rubber plugs 64 is adapted to the distance between the two passage openings at the side of the internal cavity of the automobile brake system pump shell 100. Specifically, as shown in Figure 6 The plugging seat 62 is formed with an assembly cavity 621, the inner end of the adaptive adjustment rod 63 is movably assembled in the assembly cavity 621, and the outer end is formed with a buffer cavity 631. One end of the plug connecting rod 641 is assembled in the buffer cavity 631, and the other end is fixedly connected with the rubber plug 64. In order to realize the automatic adjustment of the adaptive adjustment rod 63 and the rubber plug 64,Figure 6 As shown, the cavity diameter of the assembly cavity 621 is greater than the inner end diameter of the adaptive adjusting rod 63, and a rubber ring groove 632 is formed on the inner end annular surface of the adaptive adjusting rod 63, and a rubber ring 67 is sleeved in the rubber ring groove 632. The rubber ring 67 is used to constrain the adaptive adjusting rod 63 to complete automatic centering in the assembly cavity 621, and after the rubber plug 64 is subjected to external lateral pressure, the inner end of the adaptive adjusting rod 63 generates corresponding lateral pressure on the rubber ring 67, so that the rubber ring 67 is deformed, thereby enabling the adaptive adjusting rod 63 to have a certain amount of floating in the assembly cavity 621. Specifically, when the rubber plug 64 is in position with the channel openings of the internal chamber of the automobile brake system pump shell 100 at the side portions, if the rubber plug 64 is deviated in position due to the tolerance between the channel openings, when one side of the rubber plug 64 is subjected to lateral extrusion in the process of being in position with the channel openings, the adaptive adjusting rod 63 connected with the rubber plug 64 will be deviated in the assembly cavity 621 away from the extrusion side, so that the rubber plug 64 can be accurately inserted into the channel openings. Specifically, when the rubber plug 64 is not subjected to lateral extrusion, the axis of the adaptive adjusting rod 63 coincides with the axis of the assembly cavity 621, and when the rubber plug 64 is subjected to lateral extrusion, the axis of the adaptive adjusting rod 63 is deviated from the axis of the assembly cavity 621. Through the design of the above structure, the rubber plug 64 can be more flexible to be inserted into the channel openings of the internal chamber of the automobile brake system pump shell 100 at the side portions.

[0029] In the embodiment of the utility model, when the rubber plug 64 is subjected to axial force in the process of being inserted into the channel openings, the inner end of the adaptive adjusting rod 63 can also be elastically buffered in the buffer cavity 631. In order to enable the rubber plug 64 to be better inserted into the channel openings in position, as shown in Figure 6 As shown, the head peripheral edge of the rubber plug 64 is an arc transition surface.

[0030] Further, in the preferred embodiment of the utility model, as shown in Figure 4 , Figure 5 and Figure 6 As shown, the tail portions of the plugging seats 62 and the tail portion of the adaptive adjusting rod 63 are provided with positionally matched bayonet holes 622, and the two plugging seats 62 are connected through a continuous bayonet 66. As shown in Figure 4As shown, the sliding adjustment mechanism 65 comprises a handle seat 651 fixed on the pump shell assembly seat 5, and a guide rail 654, wherein the handle seat 651 is fixed with a curved handle 652 and a movable driving link 653, the curved handle 652 is connected with the driving link 653 at one end, the other end of the driving link 653 is fixedly connected with the L-shaped linkage plate 61, and the bottom of the L-shaped linkage plate 61 is slidingly sleeved on the guide rail 654. When the plugging action needs to be performed, the curved handle 652 is pulled outward, and when the curved handle 652 rotates, the curved handle 652 drives the driving link 653 to push out the L-shaped linkage plate 61 forward, so that the L-shaped linkage plate 61 slides forward on the guide rail 654 by a corresponding displacement, so that the rubber plug 64 on the plugging seat 62 is inserted into the channel opening in position.

[0031] Further, in the preferred embodiment of the utility model, as shown in Figure 7 and Figure 8 , the elastic connection mechanism 7 comprises a fixed seat 71 fixed on the upper end of the stand column 2, a buffer seat 73 connected with the fixed seat 71 through four buffer spring columns 72, and a butt joint pipe 74 arranged at the bottom of the buffer seat 73. As shown in Figure 8 , the lower end of the butt joint pipe 74 is matched with the channel opening at the top of the internal cavity of the automobile brake system pump shell 100, a second sealing ring 741 is arranged around the opening, and an instrument interface 742 for connecting an external leakage tester is arranged on the side of the butt joint pipe 74. Two parallel slide rails 31 are arranged on the support platform 1, and the bottom of the sliding seat 4 is slidingly connected with the slide rails 31 through a sliding block. When the automobile brake system pump shell 100 with different top channel opening positions is tested, the butt joint pipe 74 can be matched with the top channel opening of the automobile brake system pump shell 100 by adjusting the position of the sliding seat 4 on the slide rails 31. In order to conveniently adjust the elastic pre-tightening force of the spring on the buffer spring column 72, as shown in Figure 7 and Figure 8 , an adjustable adjusting pipe sleeve 75 is threadedly sleeved on the upper end of the buffer spring column 72, and the fixed position of the adjusting pipe sleeve 75 on the buffer spring column 72 can be adjusted up and down. By adjusting the compression amount of the spring on the buffer spring column 72, the pre-tightening force of the spring can be adjusted, the downward pressure can be changed, and the buffer stroke of the buffer seat 73 can be adjusted. Specifically, when the adjusting pipe sleeve 75 is adjusted downward, the buffer stroke of the buffer seat 73 becomes smaller, and when the adjusting pipe sleeve 75 is adjusted upward, the buffer stroke of the buffer seat 73 becomes larger.

[0032] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application. These changes and improvements all fall within the scope of the claimed present application, and the scope of protection required by the present application is defined by the appended claims and their equivalents.

Claims

1. A leakage test fixture for an automotive brake system pump housing, used to perform leakage testing on an automotive brake system pump housing (100), characterized in that, The application relates to a support platform (1) provided with a slide rail plate (3), a slide seat (4) horizontally slidably arranged on the slide rail plate (3), a pump shell assembly seat (5) arranged on the slide seat (4) through a support column, an assembly opening (51) for assembling a pump shell (100) of an automobile braking system and an air inlet connecting opening (52) matched with a passage opening at the bottom of an inner cavity of the pump shell (100) formed on the pump shell assembly seat (5), an air inlet interface (54) connected with external air inlet equipment formed on the lower surface of the pump shell assembly seat (5) downwardly, a sealing mechanism (6) for adaptively sealing two passage openings at the side of the inner cavity of the pump shell (100) arranged on one side of the pump shell assembly seat (5), a stand column (2) arranged on the support platform (1), an elastic connecting mechanism (7) for matching with the passage opening at the top of the inner cavity of the pump shell (100) arranged on the upper end of the stand column (2), and the inner cavity of the pump shell (100) connected with an external leakage tester through the elastic connecting mechanism (7).

2. The automotive brake system pump housing leak test tooling of claim 1, wherein, A first sealing ring (53) is arranged around the air inlet connecting opening (52) for sealing.

3. The automotive brake system pump housing leak test tooling of claim 1, wherein, The sealing mechanism (6) comprises an L-shaped linkage plate (61) slidably arranged on the pump shell assembly seat (5), the L-shaped linkage plate (61) is connected with a sliding adjusting mechanism (65) and two sealing seats (62), an adaptive adjusting rod (63) is arranged in the sealing seat (62), a plug connecting rod (641) is arranged at the front end of the adaptive adjusting rod (63), rubber plugs (64) are arranged at the ends of the plug connecting rod (641), when the rubber plugs (64) are laterally pressed, the axis position of the adaptive adjusting rod (63) is adaptively changed in the sealing seat (62), so that the interval between the two rubber plugs (64) is matched with the interval of the two passage openings at the side of the inner cavity of the pump shell (100).

4. The automotive brake system pump housing leak test tooling of claim 3, wherein, An assembly cavity (621) is formed in the sealing seat (62), the inner end of the adaptive adjusting rod (63) is movably arranged in the assembly cavity (621), a buffer cavity (631) is formed at the outer end of the adaptive adjusting rod (63), the plug connecting rod (641) is arranged at one end of the buffer cavity (631), the cavity diameter of the assembly cavity (621) is larger than the inner end diameter of the adaptive adjusting rod (63), a rubber ring groove (632) is formed on the inner end ring surface of the adaptive adjusting rod (63), a rubber ring (67) for automatically centering the adaptive adjusting rod (63) in the assembly cavity (621) is arranged in the rubber ring groove (632).

5. The automotive brake system pump housing leak test tooling of claim 3, wherein, The tail of the sealing seat (62) and the tail of the adaptive adjusting rod (63) are provided with matched snap pin holes (622), and the two sealing seats (62) are connected through a snap pin (66).

6. The automotive brake system pump housing leak test tooling of claim 3, wherein, The sliding adjusting mechanism (65) comprises a handle seat (651) fixed on the pump shell assembly seat (5), a guide rail (654), a curved handle (652) and a movable driving link (653) fixed on the handle seat (651), the curved handle (652) is connected with one end of the driving link (653), the other end of the driving link (653) is fixedly connected with the L-shaped linkage plate (61), and the bottom of the L-shaped linkage plate (61) is slidably sleeved on the guide rail (654).

7. The automotive brake system pump housing leak test tooling of claim 1, wherein, The elastic connecting mechanism (7) comprises a fixed seat (71) fixed on the upper end of the stand (2), a buffer seat (73) connected with the fixed seat (71) through four buffer spring columns (72), and a butt joint pipe (74) arranged at the bottom of the buffer seat (73), the lower end of the butt joint pipe (74) is in position matching with the passage opening at the top of the internal cavity of the automobile brake system pump shell (100), a second sealing ring (741) is arranged around the opening, and an instrument interface (742) for connecting an external leakage tester is arranged on the side of the butt joint pipe (74).

8. The automotive brake system pump housing leak test tool of claim 7, wherein, The upper end of the buffer spring column (72) is threadedly sleeved with an adjusting tube sleeve (75) which can be adjusted up and down to adjust the spring pre-tightening force on the buffer spring column (72).

9. The automotive brake system pump housing leak test tooling of claim 1, wherein, Two parallel slide rails (31) are arranged on the support platform (1), and the bottom of the slide seat (4) is slidably connected to the slide rails (31) through a sliding block.

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