CN108106792B - Sealing method of electronic parking actuator - Google Patents

Sealing method of electronic parking actuator Download PDF

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Publication number
CN108106792B
CN108106792B CN201711403073.5A CN201711403073A CN108106792B CN 108106792 B CN108106792 B CN 108106792B CN 201711403073 A CN201711403073 A CN 201711403073A CN 108106792 B CN108106792 B CN 108106792B
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CN
China
Prior art keywords
electronic parking
plate
pressing
actuator
plug
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Application number
CN201711403073.5A
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Chinese (zh)
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CN108106792A (en
Inventor
顾宏超
徐治平
李国军
疏涛
吴宏城
Original Assignee
蔡盼
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Priority to CN201711403073.5A priority Critical patent/CN108106792B/en
Publication of CN108106792A publication Critical patent/CN108106792A/en
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Publication of CN108106792B publication Critical patent/CN108106792B/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors

Abstract

The invention discloses a sealing method of an electronic parking actuator, which adopts a special sealing device and comprises the following steps: s1, after the electronic parking actuator is placed on the actuator positioning device for positioning, the actuator positioning device is lifted upwards by the lifting device until the actuator positioning device rises to the top dead center position; s2, an actuator pressing device of the special sealing device presses the electronic parking actuator on the actuator positioning device, and the opening end of a connector of the electronic parking actuator is sealed; and S3, the opening end of the shell of the electronic parking actuator is closed by the shell blocking device of the special sealing device, and the sealing of the electronic parking actuator is completed. The sealing method of the electronic parking actuator can conveniently seal the electronic parking actuator when the sealing performance of the electronic parking actuator is tested by adopting the special sealing device, thereby improving the sealing reliability of the electronic parking actuator.

Description

Sealing method of electronic parking actuator

Technical Field

The invention belongs to the technical field of electronic parking actuator processing equipment of an electronic parking brake system of a motor vehicle, and particularly relates to a sealing method of an electronic parking actuator.

Background

In the process of implementing the invention, the inventor finds that the prior art has at least the following problems: the electronic parking actuator of the motor vehicle electronic parking braking system needs to be subjected to sealing performance test after assembly is completed, the electronic parking actuator needs to be sealed when the sealing performance test is carried out, the traditional technology adopts manual sealing, the working efficiency is low, the sealing reliability is low, and the result of the sealing performance test of the electronic parking actuator is inaccurate.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a sealing method of an electronic parking actuator, and aims to improve the sealing reliability of the electronic parking actuator during a sealing performance test.

In order to achieve the purpose, the invention adopts the technical scheme that: the sealing method of the electronic parking actuator adopts a special sealing device and comprises the following steps:

s1, after the electronic parking actuator is placed on the actuator positioning device for positioning, the actuator positioning device is lifted upwards by the lifting device until the actuator positioning device rises to the top dead center position;

s2, an actuator pressing device of the special sealing device presses the electronic parking actuator on the actuator positioning device, and the opening end of a connector of the electronic parking actuator is sealed;

and S3, the opening end of the shell of the electronic parking actuator is closed by the shell blocking device of the special sealing device, and the sealing of the electronic parking actuator is completed.

The actuator pressing device comprises an upper pressing head assembly used for applying pressing force to the electronic parking actuator, a side face plugging assembly arranged on the upper pressing head assembly and used for enabling an opening end of a connector of the electronic parking actuator to be sealed, and a driving assembly used for controlling the upper pressing head assembly to move in the vertical direction, wherein the upper pressing head assembly is located above the shell plugging device.

The side plugging assembly comprises a plug mounting plate, a side plug and a side plugging air cylinder, wherein the side plug is arranged on the plug mounting plate and used for closing an opening end of a connector of the electronic parking actuator, the side plugging air cylinder is connected with the plug mounting plate and used for controlling the plug mounting plate to move along the vertical direction, and the side plugging air cylinder is connected with the upper pressure head assembly.

The side plugs are sealing gaskets made of polyurethane or silica gel materials.

The upper pressure head assembly comprises an upper pressure plate, a pressing rod and a pressure head connecting plate, the pressing rod is arranged on the upper pressure plate and used for applying pressing force to the electronic parking actuator, the pressure head connecting plate is connected with the upper pressure plate and the driving assembly, the pressing rods are arranged in a plurality and are located above the positioning blocks.

The number of the pressing rods is two.

The driving assembly comprises a pressing cylinder, a guide rod connecting plate, an upper guide rod and an upper guide plate, the guide rod connecting plate is connected with the pressing cylinder and the pressure head connecting plate, the upper guide rod is connected with the guide rod connecting plate, the upper guide plate is sleeved on the upper guide rod and is positioned above the guide rod connecting plate, and the upper guide plate is provided with an upper guide hole for the upper guide rod to be inserted into.

The upper guide rods are provided with two parallel guide rods.

The shell plugging device comprises a bottom plug and a bottom plugging air cylinder, wherein the bottom plug is used for sealing the opening end of the shell of the electronic parking actuator, and the bottom plugging air cylinder is connected with the bottom plug and is used for controlling the bottom plug to move along the vertical direction.

The bottom end cap is vertically arranged, an O-shaped sealing ring used for being attached to the end face of the open end of the shell of the electronic parking actuator is arranged at the upper end of the bottom end cap, and the upper end of the bottom end cap is connected with the bottom plugging air cylinder.

According to the sealing method of the electronic parking actuator, the special sealing device is adopted, the electronic parking actuator can be conveniently sealed when the sealing performance of the electronic parking actuator is tested, the sealing reliability of the electronic parking actuator is improved, and the accuracy of the sealing performance test result of the electronic parking actuator is ensured.

Drawings

The description includes the following figures, the contents shown are respectively:

FIG. 1 is a schematic structural view of a dedicated sealing device;

FIG. 2 is a schematic structural view of a test apparatus having a dedicated sealing device;

FIG. 3 is a schematic view of a partial structure of a test apparatus;

FIG. 4 is a schematic view of the construction of the actuator positioning device;

FIG. 5 is a schematic view of the construction of the actuator compression device;

FIG. 6 is a schematic view of the assembly of the actuator positioning device with the jacking device and the housing plugging device;

labeled as: 1. a test bench; 2. a leak tester; 3. an actuator positioning device; 301. positioning the bottom plate; 302. positioning blocks; 303. an actuator positioning pin; 304. positioning holes; 305. positioning a groove; 306. avoiding holes; 4. a jacking device; 401. a support plate; 402. a lower locating pin; 403. jacking a cylinder; 404. a lower guide plate; 405. a lower guide bar; 5. an actuator pressing device; 501. a pressing cylinder; 502. an upper guide bar; 503. an upper guide plate; 504. a guide rod connecting plate; 505. a pressure head connecting plate; 506. an upper platen; 507. the side surface blocks the air cylinder; 508. a plug mounting plate; 509. a hold down bar; 6. a housing plugging device; 601. the bottom plugs the cylinder; 602. a bottom plug; 7. a limiting device; 701. a support plate; 702. a limiting plate; 8. a housing; 9. a connector is provided.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.

As shown in fig. 1, the invention provides a sealing method for an electronic parking actuator, which realizes sealing of the electronic parking actuator during a sealing performance test by adopting a special sealing device. As shown in fig. 1 and 2, the special sealing device includes an actuator pressing device 5 for applying a pressing force to the electronic parking actuator and closing an open end of a connector of the electronic parking actuator, and a housing blocking device 6 for blocking an open end of a housing of the electronic parking actuator, the actuator pressing device 5 is located above the housing blocking device 6, and the housing blocking device 6 and the actuator pressing device 5 are disposed on the test table 1.

As shown in fig. 2, the sealing performance testing apparatus for the electronic parking actuator with the special sealing device of the present invention further includes a testing table 1, a leakage tester 2, an actuator positioning device 3 for placing the electronic parking actuator, and a jacking device for controlling the actuator positioning device 3 to move in a vertical direction.

Specifically, the sealing method of the electronic parking actuator of the present invention includes the steps of:

s1, after the electronic parking actuator is placed on the actuator positioning device for positioning, the actuator positioning device is lifted upwards by the lifting device until the actuator positioning device rises to the top dead center position;

s2, an actuator pressing device of the special sealing device presses the electronic parking actuator on the actuator positioning device, and the opening end of a connector of the electronic parking actuator is sealed;

and S3, the opening end of the shell of the electronic parking actuator is sealed by the shell plugging device of the special sealing device, the electronic parking actuator is sealed, and then the electronic parking actuator is subjected to a sealing performance test.

The electronic parking actuator is used for converting electric energy into rotational kinetic energy and generating driving force for linearly moving a brake pad of an electronic parking brake system relative to a brake disc along a direction parallel to the axial direction of the brake disc so as to enable the brake pad to clamp or release the brake disc. The electronic parking actuator mainly comprises a shell, a motor arranged in the shell, a planetary gear speed reducing mechanism and a gear transmission mechanism, wherein the gear transmission mechanism is used for transmitting power generated by the motor to the planetary gear speed reducing mechanism. The leakage tester 2 is arranged on the test workbench 1, and the shell blocking device 6 is positioned below the actuator pressing device 5.

As shown in fig. 1 to 4, the actuator positioning device 3 includes a positioning base plate 301, a positioning block 302 disposed on the positioning base plate 301 and used for placing the electronic parking actuator, and an actuator positioning pin 303 disposed on the positioning block 302 and used for positioning the electronic parking actuator. The positioning bottom plate 301 is horizontally arranged, the positioning bottom plate 301 is positioned and supported by the jacking device 4, the positioning bottom plate 301 is a rectangular flat plate, and the length direction and the width direction of the positioning bottom plate 301 are parallel to the horizontal direction. The positioning block 302 is fixedly disposed on the top surface of the positioning base plate 301, the positioning block 302 has a positioning groove 305 for the housing of the electronic parking actuator to be embedded, the positioning groove 305 is a groove formed by recessing from the top surface of the positioning block 302 toward the inside of the positioning block 302, and the positioning groove 305 matches with the shape of the housing of the electronic parking actuator. The actuator positioning pin 303 is provided in plurality and the actuator positioning pin 303 is vertically provided on the positioning block 302, and the housing has a hole into which the actuator positioning pin 303 is inserted. The actuator positioning pin 303 is vertically arranged on the positioning block 302, the actuator positioning pin 303 is inserted into the positioning block 302, the axis of the actuator positioning pin 303 is located in a vertical plane, the top surface of the positioning block 302 is a positioning surface for placing a shell of the electronic parking actuator, the actuator positioning pin 303 extends to the top surface of the positioning block 302, the actuator positioning pin is conveniently embedded into a hole in the shell of the electronic parking actuator, and accurate positioning of the shell of the electronic parking actuator is achieved.

In this embodiment, as shown in fig. 4, two actuator positioning pins 303 are provided, the actuator positioning pins 303 are cylindrical pins, and the two actuator positioning pins 303 are located on the same straight line parallel to the length direction of the positioning base plate 301.

As shown in fig. 2, 3 and 6, the jacking device 4 includes a supporting plate 401 disposed below the actuator positioning device 3 and used for supporting the actuator positioning device 3, and a lower positioning pin 402 disposed on the supporting plate 401 and used for positioning the actuator positioning device 3, and the positioning base plate 301 has a positioning hole 304 into which the lower positioning pin 402 is inserted. Supporting plate 401 is parallel to positioning bottom plate 301 and supporting plate 401 provides the supporting role to positioning bottom plate 301 in the below of positioning bottom plate 301, and supporting plate 401 is the rectangle flat board, and the length direction and the width direction of supporting plate 401 are the horizontal direction, and lower locating pin 402 is fixed to be set up on supporting plate 401, and lower locating pin 402 is vertical setting, and lower locating pin 402 is the cylindric lock, and the axis of lower locating pin 402 is located the vertical plane. As shown in fig. 4, the positioning hole 304 is a circular hole, the diameter of the positioning hole 304 is the same as the diameter of the lower positioning pin 402, the positioning hole 304 is a through hole penetrating through the positioning bottom plate 301 along the plate thickness direction, and the lower positioning pin 402 is inserted into the positioning hole 304, so that the actuator positioning device 3 is prevented from moving, the actuator positioning device 3 is accurately positioned, and the electronic parking actuator is accurately positioned during assembly. Preferably, the lower positioning pins 402 are provided in plural, the corresponding positioning holes 304 are also provided in plural, the number of the positioning holes 304 is the same as that of the lower positioning pins 402, and each lower positioning pin 402 is inserted into one positioning hole 304.

In the present embodiment, as shown in fig. 3, 4 and 6, two lower positioning pins 402 are provided, two positioning holes 304 are provided on the positioning base plate 301, the two lower positioning pins 402 are located on the same straight line parallel to the length direction of the supporting plate 401, and the positioning block 302 is located at the middle position between the two lower positioning pins 402.

As shown in fig. 2, 3 and 6, the jacking device 4 further includes a jacking cylinder 403 for controlling the supporting plate 401 to move in the vertical direction, a lower guide rod 405 connected to the supporting plate 401, and a lower guide plate 404 sleeved on the lower guide rod 405 and located below the supporting plate 401, wherein the lower guide plate 404 has a lower guide hole into which the lower guide rod 405 is inserted. Lower deflector 404 parallels with layer board 401, lower deflector 404 and test bench 1 fixed connection, lower deflector 404 is the rectangle flat board, the length direction and the width direction of lower deflector 404 are the horizontal direction, the through-hole that the guiding hole runs through the setting for following the thick orientation of board on lower deflector 404, lower guide bar 405 is vertical setting, the guiding hole is the round hole down, lower guide bar 405 is the round rod body, the diameter of lower guide bar 405 is the same with the diameter size of guiding hole down, lower guide bar 405 passes down the guiding hole, lower guide bar 405 is located the below of layer board 401, the upper end and layer board 401 fixed connection of lower guide bar 405. The lower guide rod 405 is matched with the lower guide plate 404 to guide the supporting plate 401, so that the supporting plate 401 is ensured to do stable linear motion along the vertical direction. Jacking cylinder 403 is located below supporting plate 401, jacking cylinder 403 and lower deflector 404 fixed connection, and jacking cylinder 403 is vertical setting, and jacking cylinder 403's piston rod and supporting plate 401 fixed connection are flexible through jacking cylinder 403, and control supporting plate 401 and the last executor positioner 3 of above do reciprocating linear motion along vertical direction.

As shown in fig. 3 and 6, one lower guide rod 405 is provided, one lower guide hole is also provided, the lower guide rod 405 is inserted into the lower guide hole, one jacking cylinder 403 is provided, the jacking cylinder 403 and the lower guide rod 405 are positioned on the same straight line parallel to the length direction of the supporting plate 401, and the jacking cylinder 403 and the lower guide hole are respectively positioned at one end of the supporting plate 401 in the length direction.

As shown in fig. 2 to 6, the electronic parking actuator sealing performance testing apparatus further includes a limiting device 7 for limiting the actuator positioning device 3 in the vertical direction, where the limiting device 7 includes a supporting plate 701 and a limiting plate 702 disposed on the supporting plate 701 and located above the positioning base plate 301. The supporting plate 701 is arranged vertically, the supporting plate 701 is fixedly connected with the test workbench 1, the limiting plate 702 is fixedly arranged on the supporting plate 701, and the length direction of the limiting plate 702 is parallel to the horizontal direction. The limiting plate 702 is fixedly connected with the upper end of the supporting plate 701, the limiting plate 702 extends out towards one side of the supporting plate 701 along the horizontal direction, when the jacking device 4 pushes the actuator positioning device 3 to move upwards, after the top surface of the positioning bottom plate 301 is contacted with the limiting plate 702, the actuator positioning device 3 rises to the position, and at the moment, the limiting plate 702 is matched with the supporting plate 401 to clamp the positioning bottom plate 301, so that the actuator positioning device 3 is fixed. Preferably, the limiting devices 7 are arranged in a plurality, each limiting device 7 is located at a different position, all the limiting devices 7 are arranged in two rows, the limiting devices 7 in each row are located on the same straight line parallel to the length direction of the positioning bottom plate 301, the two rows of limiting devices 7 are symmetrically distributed, the limiting devices 7 in each row are sequentially arranged along the length direction of the positioning bottom plate 301, the limiting devices 7 are matched, the limiting effect is jointly achieved on the actuator positioning device 3, the limiting reliability is guaranteed, the positioning bottom plate 301 is enabled to be stressed uniformly, the stability is high, and the reliability is good.

In the present embodiment, as shown in fig. 2, 3 and 6, four limiting devices 7 are provided, and each limiting device 7 is located at one right-angled corner of the positioning base plate 301.

The sealing performance of the electronic parking actuator is tested, the electronic parking actuator to be tested is placed on the actuator positioning device 3 for positioning, and then the actuator positioning device 3 is jacked upwards by the jacking device 4 until the actuator positioning device 3 rises to the top dead center position; then, an electronic parking actuator on the actuator positioning device 3 is pressed by an actuator pressing device 5, and the opening end of a connector of the electronic parking actuator is sealed by the actuator pressing device 5; then the opening end of the shell of the electronic parking actuator is closed by a shell blocking device 6; and finally, filling test gas into the electronic parking actuator, and performing leakage test on the electronic parking actuator by using the leakage tester 2.

As shown in fig. 1 to 6, the actuator pressing device 5 includes an upper pressing head assembly located above the actuator positioning device 3 and configured to apply a pressing force to the electronic parking actuator, a side blocking assembly disposed on the upper pressing head assembly and configured to close an opening end of a connector of the electronic parking actuator, and a driving assembly configured to control the upper pressing head assembly to move in a vertical direction. The connector of electron parking executor sets up on the casing, and the connector stretches out towards the outside of casing, and the connector is used for pegging graft pencil, and the one end and the casing fixed connection of connector, the other end of connector have let the opening that the pencil was inserted, this opening and the inner chamber intercommunication of casing, need seal this opening of connector during consequently the test. The side blocking assembly comprises a plug mounting plate 508, a side plug which is arranged on the plug mounting plate 508 and used for closing an opening end of a connector of the electronic parking actuator, and a side blocking cylinder 507 which is connected with the plug mounting plate 508 and used for controlling the plug mounting plate 508 to move along the vertical direction, wherein the side blocking cylinder 507 is connected with the upper pressure head assembly. The side end cap is used for being attached to the end face of the opening end of the connector of the electronic parking actuator so as to seal the opening of the opening end of the connector, and the side end cap is a sealing gasket made of polyurethane or silica gel and is good in sealing performance.

As shown in fig. 1 to 6, the upper ram assembly includes an upper platen 506, a plurality of ram connecting plates 505 connected to the upper platen 506 and the drive assembly, and a plurality of ram rods 509 arranged on the upper platen 506 and used for applying a pressing force to the electronic parking actuator, wherein the ram rods 509 are located above the positioning block 302. The driving assembly comprises a pressing air cylinder 501, a guide rod connecting plate 504 connected with the pressing air cylinder 501 and a pressure head connecting plate 505, an upper guide rod 502 connected with the guide rod connecting plate 504, and an upper guide plate 503 sleeved on the upper guide rod 502 and located above the guide rod connecting plate 504, wherein the upper guide plate 503 is provided with an upper guide hole for inserting the upper guide rod 502. Go up the deflector 503 and parallel with lower deflector 404, go up deflector 503 and test table 1 fixed connection, it is the rectangle flat board to go up the deflector 503, the length direction and the width direction of going up the deflector 503 are the horizontal direction, it runs through the through-hole that sets up for going up the via hole along the thick direction of board on last deflector 503 to go up the guiding hole, it is vertical setting to go up the guiding rod 502, it is the round hole to go up the guiding hole, it is the round rod body to go up the guiding rod 502, the diameter of going up the guiding rod 502 is the same with the diameter size of last guiding hole, it passes down the guiding hole to go up the guiding rod 502, go up the guiding rod 502 and be located the top of guide arm connecting plate 504, the lower extreme and the guide. The upper guide plate 503 is fixedly arranged, and the upper guide rod 502 is matched with the upper guide plate 503 to guide the guide rod connecting plate 504 and the upper pressure head assembly, so that the guide rod connecting plate 504 and the upper pressure head assembly are ensured to do stable linear motion along the vertical direction. The jacking cylinder 403 is located below the guide rod connecting plate 504, the pressing cylinder 501 is fixedly connected with the lower guide plate 404, the pressing cylinder 501 is vertically arranged, a piston rod of the pressing cylinder 501 is fixedly connected with the guide rod connecting plate 504, and the guide rod connecting plate 504 and the upper pressure head assembly are controlled to do reciprocating linear motion along the vertical direction through the extension and retraction of the pressing cylinder 501. The upper guide rods 502 are provided with two parallel upper guide holes, the upper guide holes are also provided with two upper guide rods 502, each upper guide rod 502 is inserted into one upper guide hole, and the pressing air cylinder 501 is positioned between the two upper guide rods 502. The pressing head connecting plate 505 is vertically arranged, the pressing head connecting plate 505 is located between the upper pressing plate 506 and the guide rod connecting plate 504, the upper pressing plate 506 is parallel to the guide rod connecting plate 504, the upper end of the pressing head connecting plate 505 is fixedly connected with the guide rod connecting plate 504, the lower end of the pressing head connecting plate 505 is fixedly connected with the upper pressing plate 506, the pressing head connecting plate 505 is perpendicular to the guide rod connecting plate 504 and the upper pressing plate 506, the two pressing head connecting plates 505 are arranged in parallel, a certain distance is reserved between the two pressing head connecting plates 505, the two pressing head connecting plates 505 are respectively and fixedly connected with the upper pressing plate 506 at two ends of the upper pressing plate 506, and the. The pressing rod 509 is a rod-shaped member vertically arranged, the pressing rod 509 extends towards the lower part of the upper pressure plate 506, the upper end of the pressing rod 509 is fixedly connected with the upper pressure plate 506, the lower end face of the pressing rod 509 is a pressing surface used for contacting with the shell of the electronic parking actuator, the pressing surface is a plane perpendicular to the vertical direction, the pressing rod 509 applies pressing force to the housing of the electronic parking actuator at a fixing lug on the housing of the electronic parking actuator, the housing of the electronic parking actuator is mounted on a caliper body of the brake caliper at the fixing lug through a bolt, the fixing lug of the housing of the electronic parking actuator is provided with a bolt hole through which the bolt passes, and the bolt hole is also used as a hole for inserting the actuator positioning pin 303, the pressing rod 509 is positioned above the actuator positioning pin 303, and the diameter of the pressing rod 509 is larger than that of the bolt hole on the fixing lug of the housing of the electronic parking actuator. After the actuator pressing device 5 applies pressing force to the shell of the electronic parking actuator, the actuator pressing device 5 presses the electronic parking actuator on the positioning block 302, the actuator pressing device 5 is matched with the actuator positioning device 3 to realize the positioning and fixing of the electronic parking actuator, the pressing surface of the pressing rod 509 contacts with the top surface of the fixing lug of the shell of the electronic parking actuator, and the bottom surface of the fixing lug contacts with the top surface of the positioning block 302. The actuator pressing device 5 applies pressing force to the electronic parking actuator at the fixing lug of the shell of the electronic parking actuator, so that the electronic parking actuator is not easily damaged, and the electronic parking actuator is ensured to be fixed and reliable.

As shown in fig. 1 to 6, two fixing lugs of the housing of the electronic parking actuator are symmetrically arranged, two pressing rods 509 are also provided, the two pressing rods 509 are located on the same straight line parallel to the length direction of the upper pressing plate 506, each pressing rod 509 is located right above one actuator positioning pin 303, and the two pressing rods 509 respectively apply pressing force to the electronic parking actuator at the two fixing lugs on the housing of the electronic parking actuator, so that the electronic parking actuator is uniformly stressed and reliably fixed.

As shown in fig. 1 to 6, the side-blocking cylinder 507 is vertically disposed, the side-blocking cylinder 507 is fixedly connected to the ram connecting plates 505, the side-blocking cylinder 507 is located on the same side of the two pressing rods 509, the bulkhead mounting plate 508 is fixedly connected to the piston rod of the side-blocking cylinder 507, the cylinder body of the side-blocking cylinder 507 is fixedly connected to the two ram connecting plates 505, the bulkhead mounting plate 508 is located below the cylinder body of the side-blocking cylinder 507, the length direction of the bulkhead mounting plate 508 is parallel to the same straight line where the two pressing rods 509 are located, and the side bulkhead is mounted at the middle position of the bulkhead mounting plate 508 in the length direction.

The actuator pressing device 5 with the structure realizes the fixation of the electronic parking actuator and simultaneously realizes the sealing of the open end of the connector of the electronic parking actuator, has compact structure, small occupied space and convenient arrangement, can realize the sealing of the open end of the connector of the electronic parking actuator, has high sealing reliability, and ensures the accuracy of the sealing performance test result of the electronic parking actuator.

As shown in fig. 1, 3, 4 and 6, the housing blocking device 6 includes a bottom block 602 for blocking an open end of the housing of the electronic parking actuator, and a bottom blocking cylinder 601 connected to the bottom block 602 and controlling the bottom block 602 to move in a vertical direction. One end of the shell is fixedly connected with the connector, the other end of the shell is provided with an opening, the opening is circular, a power output shaft of the electronic parking actuator is inserted into the opening, and the opening is communicated with the inner cavity of the shell, so that the circular opening of the opening end of the shell needs to be closed during testing. The bottom plug 602 is a cylinder, the bottom plug 602 is vertically arranged, the supporting plate 401 is provided with a through hole through which the bottom plug 602 penetrates, the positioning base plate 301 is provided with a through hole through which the bottom plug 602 penetrates, the positioning block 302 is provided with an avoiding hole 306 in which the bottom plug 602 is embedded, the avoiding hole 306 is communicated with the through hole in the positioning base plate 301 and coaxially arranged, and the supporting plate 401, the positioning base plate 301 and the positioning block 302 are matched to guide the bottom plug 602 and ensure that the bottom plug 602 linearly moves along the vertical direction. The avoiding hole 306 on the positioning block 302 is used for aligning with a circular opening of an opening end of a shell of the electronic parking actuator, after the electronic parking actuator is fixed on the positioning block 302, the avoiding hole 306 on the positioning block 302 and the circular opening of the opening end of the shell of the electronic parking actuator are in a coaxial and communicated state, the bottom plug 602 and the circular opening of the opening end of the shell of the electronic parking actuator are in a coaxial state, finally, under the action of the bottom plugging cylinder 601, the bottom plug 602 moves upwards, and the bottom plug 602 is attached to the end face of the opening end of the shell of the electronic parking actuator so as to seal the opening end of the shell of the electronic parking actuator.

As shown in fig. 1, 3 and 6, the bottom plug 602 is located above the lower guide plate 404, the bottom plug 602 is located between the jacking cylinder 403 and the lower guide rod 405, the bottom plugging cylinder 601 is vertically arranged, the bottom plugging cylinder 601 is located below the bottom plug 602, the lower end of the bottom plug 602 is fixedly connected with a piston rod of the bottom plugging cylinder 601, a cylinder body of the bottom plugging cylinder 601 is fixedly connected with the lower guide plate 404, and a cylinder body of the bottom plugging cylinder 601 is located below the lower guide plate 404. The bottom plugging cylinder 601 stretches and retracts, and the bottom plug 602 is controlled to do linear reciprocating motion along the vertical direction, so that the bottom plugging cylinder 601 is inserted into the avoiding hole 306 of the positioning block 302 and is pulled out of the avoiding hole 306. Preferably, an O-ring for fitting with an end face of an open end of a housing of the electronic parking actuator is disposed at an upper end of the bottom plug 602, so that the sealing performance between the bottom plug 602 and the housing of the electronic parking actuator is improved, and the accuracy of a sealing performance test result of the electronic parking actuator is further improved.

The shell plugging device 6 with the structure is simple in structure, convenient to arrange, capable of achieving sealing of the shell of the electronic parking actuator, high in sealing reliability and capable of ensuring accuracy of a sealing performance test result of the electronic parking actuator.

As shown in fig. 2, a leak tester 2 is installed on the test bench 1, the leak tester 2 is used for performing a leak test on the electronic parking actuator, and the leak tester 2 is a test device well known to those skilled in the art and will not be described herein. As shown in fig. 3 and 5, the plug mounting plate 508 is further configured to guide a test gas into the housing of the electronic parking actuator to be tested, the plug mounting plate 508 is connected to an external gas source through a gas pipe, the plug mounting plate 508 fills the test gas with a certain pressure provided by the gas source into the housing of the electronic parking actuator, a gas passage is disposed inside the plug mounting plate 508, after the side blocking assembly closes the open end of the connector, the gas passage in the plug mounting plate 508 communicates the connector with the inner cavity of the housing of the electronic parking actuator, the test gas provided by the gas source enters the inner cavity of the housing of the electronic parking actuator through the gas passage in the plug mounting plate 508, and the leak tester 2 detects a pressure change inside the electronic parking actuator, thereby implementing a test on the sealing performance of the electronic parking actuator.

The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.

Claims (3)

1. The sealing method of the electronic parking actuator is characterized by adopting a special sealing device and comprising the following steps:
s1, after the electronic parking actuator is placed on the actuator positioning device for positioning, the actuator positioning device is lifted upwards by the lifting device until the actuator positioning device rises to the top dead center position;
s2, an actuator pressing device of the special sealing device presses the electronic parking actuator on the actuator positioning device, and the opening end of a connector of the electronic parking actuator is sealed;
s3, the opening end of the shell of the electronic parking actuator is sealed by a shell sealing device of the special sealing device, and the electronic parking actuator is sealed;
the actuator pressing device comprises an upper pressing head assembly, a side face plugging assembly and a driving assembly, wherein the upper pressing head assembly is used for applying pressing force to the electronic parking actuator, the side face plugging assembly is arranged on the upper pressing head assembly and is used for enabling an opening end of a connector of the electronic parking actuator to be sealed, the driving assembly is used for controlling the upper pressing head assembly to move along the vertical direction, and the upper pressing head assembly is located above the shell plugging device;
the side blocking assembly comprises a plug mounting plate, a side plug and a side blocking cylinder, the side plug is arranged on the plug mounting plate and used for blocking an opening end of a connector of the electronic parking actuator, the side blocking cylinder is connected with the plug mounting plate and used for controlling the plug mounting plate to move along the vertical direction, and the side blocking cylinder is connected with the upper pressure head assembly; the side plug is used for being attached to the end face of the opening end of the connector of the electronic parking actuator so as to seal the opening of the opening end of the connector;
the shell plugging device comprises a bottom plug and a bottom plugging cylinder, wherein the bottom plug is used for sealing the opening end of a shell of the electronic parking actuator, the bottom plugging cylinder is connected with the bottom plug and is used for controlling the bottom plug to move along the vertical direction, the bottom plug is a cylinder, and the bottom plug is vertically arranged;
the side plugs are sealing gaskets made of polyurethane or silica gel materials;
the actuator positioning device comprises a positioning bottom plate, a positioning block which is arranged on the positioning bottom plate and used for placing the electronic parking actuator, and an actuator positioning pin which is arranged on the positioning block and used for positioning the electronic parking actuator; the positioning block is fixedly arranged on the top surface of the positioning bottom plate and is provided with a positioning groove for embedding the shell of the electronic parking actuator;
the upper pressure head assembly comprises an upper pressure plate, a plurality of pressure head connecting plates and a plurality of pressure head connecting plates, wherein the pressure head connecting plates are arranged on the upper pressure plate and used for applying pressing force to the electronic parking actuator, and the pressure head connecting plates are connected with the upper pressure plate and the drive assembly;
the driving assembly comprises a pressing cylinder, a guide rod connecting plate connected with the pressing cylinder and the pressing head connecting plate, an upper guide rod connected with the guide rod connecting plate, and an upper guide plate which is sleeved on the upper guide rod and positioned above the guide rod connecting plate, wherein the upper guide plate is provided with an upper guide hole into which the upper guide rod is inserted, and the upper guide rod is matched with the upper guide plate and plays a role in guiding the guide rod connecting plate and the upper pressing head assembly;
the electronic parking actuator comprises a shell, a pressing rod, an upper pressing plate, a pressing surface and a pressing lug, wherein the pressing rod is a rod-shaped member which is vertically arranged, the pressing rod extends out towards the lower part of the upper pressing plate, the upper end of the pressing rod is fixedly connected with the upper pressing plate, the end surface of the lower end of the pressing rod is a pressing surface which is used for being in contact with the shell of the electronic parking actuator, the pressing surface is a plane which is vertical to the vertical direction, and the pressing rod applies pressing force to the shell of the electronic parking actuator at the; the jacking cylinder is positioned below the guide rod connecting plate, the pressing cylinder is vertically arranged and is fixedly connected with the lower guide plate;
the side blocking cylinder is vertically arranged, the side blocking cylinder is fixedly connected with the pressure head connecting plate and is positioned on the same side of the two pressing rods, the plug mounting plate is fixedly connected with a piston rod of the side blocking cylinder, a cylinder body of the side blocking cylinder is fixedly connected with the two pressure head connecting plates, the plug mounting plate is positioned below the cylinder body of the side blocking cylinder, the length direction of the plug mounting plate is parallel to the same straight line where the two pressing rods are positioned, and the side plug is mounted in the middle of the plug mounting plate in the length direction;
the bottom plug is a cylinder and is vertically arranged, an O-shaped sealing ring which is used for being attached to the end face of the opening end of the shell of the electronic parking actuator is arranged at the upper end of the bottom plug, and the upper end of the bottom plug is connected with the bottom plugging cylinder; the supporting plate is provided with a through hole for the bottom plug to pass through, the positioning bottom plate is provided with a through hole for the bottom plug to pass through, the positioning block is provided with an avoidance hole for the bottom plug to be embedded in, the avoidance hole is communicated with the through hole in the positioning bottom plate and is coaxially arranged, and the supporting plate, the positioning bottom plate and the positioning block are matched to guide the bottom plug;
the bottom plug is positioned above the lower guide plate, the bottom plug is positioned between the jacking cylinder and the lower guide rod, the bottom plugging cylinder is positioned below the bottom plug, the lower end of the bottom plug is fixedly connected with a piston rod of the bottom plugging cylinder, a cylinder body of the bottom plugging cylinder is fixedly connected with the lower guide plate, and a cylinder body of the bottom plugging cylinder is positioned below the lower guide plate;
the plug mounting plate is used for guiding test gas to the inside of a shell of an electronic parking actuator to be tested, the plug mounting plate is connected with an external gas source through a gas pipe, the plug mounting plate fills the test gas with certain pressure provided by the gas source into the shell of the electronic parking actuator, an air passage is arranged inside the plug mounting plate, after the opening end of the connector is sealed by the side plugging assembly, the air passage in the plug mounting plate keeps the connector communicated with an inner cavity of the shell of the electronic parking actuator, the test gas provided by the gas source enters the inner cavity of the shell of the electronic parking actuator through the air passage in the plug mounting plate, and the leak tester detects pressure change inside the electronic parking actuator, so that the test of the sealing performance of the electronic parking actuator is realized.
2. The method for sealing the electronic parking actuator according to claim 1, wherein the two fixing lugs of the housing of the electronic parking actuator are symmetrically arranged, the two pressing rods are arranged on the same straight line parallel to the length direction of the upper pressing plate, and the two pressing rods respectively apply pressing force to the electronic parking actuator at the two fixing lugs on the housing of the electronic parking actuator.
3. The method of sealing an electronic parking actuator according to claim 1, wherein the upper guide rods are provided in parallel two, and the pressing cylinder is located between the two upper guide rods.
CN201711403073.5A 2017-12-22 2017-12-22 Sealing method of electronic parking actuator CN108106792B (en)

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Application Number Priority Date Filing Date Title
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CN106441737A (en) * 2016-11-30 2017-02-22 芜湖全程智能科技有限公司 Leakage testing method for electronic parking brake
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CN106768697A (en) * 2016-11-30 2017-05-31 芜湖全程智能科技有限公司 For the frock of electric parking brake leak-testing
CN106768698A (en) * 2016-11-30 2017-05-31 芜湖全程智能科技有限公司 For the frock of electric parking brake air tightness test

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Publication number Priority date Publication date Assignee Title
CN103344389A (en) * 2013-07-05 2013-10-09 宁波乔士橡塑有限公司 Leak detecting device of automotive brake liquid storage pot and leak detecting method of leak detecting device
CN203376129U (en) * 2013-07-23 2014-01-01 山东德立信液压有限公司 Shell gas tightness detection device
CN106441737A (en) * 2016-11-30 2017-02-22 芜湖全程智能科技有限公司 Leakage testing method for electronic parking brake
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