CN217878191U - Sealing tool for detecting air tightness of wire harness of automobile electric power steering system - Google Patents
Sealing tool for detecting air tightness of wire harness of automobile electric power steering system Download PDFInfo
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- CN217878191U CN217878191U CN202222289421.3U CN202222289421U CN217878191U CN 217878191 U CN217878191 U CN 217878191U CN 202222289421 U CN202222289421 U CN 202222289421U CN 217878191 U CN217878191 U CN 217878191U
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Abstract
The utility model discloses a car electric power assisted steering system pencil gas tightness detects with sealed frock, including the positioning bottom plate, set up spacing riser on the positioning bottom plate, the movable push pedal and the movable limiting plate of portable setting, set up the stifled cover of sensor pencil and the stifled cover of motor pencil in the movable push pedal, be used for fixing a position the sensor pencil and realize sealed first positioning mechanism with the stifled cover of sensor pencil mutually supporting, be used for fixing a position the motor pencil and realize sealed second positioning mechanism and exert the clamp assembly of pressure to the activity push pedal with the stifled cover of motor pencil mutually supporting. The utility model discloses a car electric power steering system pencil gas tightness detects with sealed frock realizes the sealed of pencil electric lead sheath end through stifled cover and positioning mechanism's cooperation, can improve the sealed effect of pencil electric lead sheath end when car electric power steering system pencil gas tightness detects, helps improving the accuracy and the work efficiency of gas tightness testing result.
Description
Technical Field
The utility model belongs to the technical field of vehicle steering system production facility, specifically speaking, the utility model relates to an electronic power assisted steering system pencil gas tightness of car detects with sealed frock.
Background
In an electric power steering system for an automobile, a steering gear is placed outside a cab and an Electronic Control Unit (ECU) is installed in the cab in accordance with a layout structure of a vehicle assembly, and is connected to and communicates with electric components such as a motor and a torque angle sensor in the steering gear by a connection harness. Under the condition of wading and other environments, the automobile electric power steering system needs to have certain waterproof capacity, so that the electric elements and mechanical parts on the automobile electric power steering system can be protected from being damaged due to wading, and potential safety hazards and the like can be caused in the driving process. Because the connecting wire harness sheath at the position of an Electronic Control Unit (ECU) does not have waterproof capacity, certain influence is caused when the air tightness of the automobile electric power steering system is detected, certain gaps exist between the electric leads of the motor wire harness and the electric leads of the sensor wire harness, gas can flow out from the gaps between the electric leads of the wire harness when the air tightness of the automobile electric power steering system is detected, the pressure of detected gas is too large, and misjudgment products of detection equipment are unqualified. In order to visually detect whether the product leaks air, the product is immersed into the aqueous solution during detection to observe whether bubbles are generated on each surface, and if an air leakage part is generated, water easily enters the air to damage an electrical element of the product. The problems of the air tightness detection mode of the automobile electric power steering system are as follows:
the end of the wire harness electric lead sheath has no protection capability, and the end of the wire harness electric lead sheath of the automobile electric power steering system cannot form a sealed space, so that the detection of the air pressure drop test equipment is inaccurate.
SUMMERY OF THE UTILITY MODEL
The utility model provides a car electric power steering system pencil gas tightness detects with sealed frock, the sealed effect of pencil when the purpose improves car electric power steering system pencil gas tightness and detects.
In order to realize the purpose, the utility model discloses the technical scheme who takes does: the sealing tool for the air tightness detection of the wire harness of the automobile electric power steering system comprises a positioning bottom plate, a limiting vertical plate arranged on the positioning bottom plate, a movable push plate and a movable limiting plate which can be movably arranged, a sensor wire harness plugging sleeve and a motor wire harness plugging sleeve arranged on the movable push plate, a first positioning mechanism used for positioning the sensor wire harness and matching with the sensor wire harness plugging sleeve to realize sealing, a second positioning mechanism used for positioning the motor wire harness and matching with the motor wire harness plugging sleeve to realize sealing and a clamp assembly used for applying pressure to the movable push plate, and the first positioning mechanism and the second positioning mechanism are connected with the limiting vertical plate and the movable limiting plate.
The first positioning mechanism comprises a sensor harness positioning block and a sensor harness sealing block, wherein the sensor harness positioning block is arranged on the sensor harness positioning block and matched with the sensor harness blocking sleeve, the sensor harness positioning block is provided with two sensor harness positioning blocks which are respectively connected with the limiting vertical plate and the movable limiting plate, and a positioning groove for embedding the sensor harness is formed in the sensor harness sealing block.
The opening end of the sensor wire harness plugging sleeve is provided with a first sealing conical surface, and after the two sensor wire harness sealing blocks are inserted into the inner cavity of the sensor wire harness plugging sleeve, the semi-conical surfaces on the two sensor wire harness sealing blocks are in contact with the first sealing conical surface.
The second positioning mechanism comprises a motor wire harness positioning block and a motor wire harness sealing block which is arranged on the motor wire harness positioning block and matched with the motor wire harness plugging sleeve, the motor wire harness positioning block is provided with two motor wire harness positioning blocks and two motor wire harness positioning blocks respectively connected with the limiting vertical plate and the movable limiting plate, and a positioning groove for embedding the motor wire harness is formed in the motor wire harness sealing block.
The opening end of the motor wire harness plugging sleeve is provided with a second sealing conical surface, and after the two motor wire harness sealing blocks are inserted into the inner cavity of the motor wire harness plugging sleeve, semi-conical surfaces on the two motor wire harness sealing blocks are in contact with the second sealing conical surface.
The limiting vertical plate is provided with a positioning guide vertical rod, the movable limiting plate is provided with a through hole for the positioning guide vertical rod to pass through, a return spring is arranged between the limiting vertical plate and the movable limiting plate, and the return spring is sleeved on the positioning guide vertical rod.
The lower end of the movable limiting plate is provided with two concave grooves for the sensor wire harness and the motor wire harness to pass through respectively, and the upper end of the limiting vertical plate is also provided with two concave grooves for the sensor wire harness and the motor wire harness to pass through respectively.
The limiting vertical plate is provided with a positioning guide transverse rod, and the movable push plate is provided with a through hole for the positioning guide transverse rod to pass through.
The two positioning guide cross rods are arranged, and the sensor wire harness blocking sleeve and the motor wire harness blocking sleeve are located between the two positioning guide cross rods.
The sensor wire harness sealing block and the motor wire harness sealing block are made of polyurethane high-strength rubber bars.
The utility model discloses a car electric power steering system pencil gas tightness detects with sealed frock realizes the sealed of pencil electrical lead sheath through stifled cover and positioning mechanism's cooperation, can improve the sealed effect of pencil electrical lead sheath end when car electric power steering system pencil gas tightness detects, helps improving the accuracy and the work efficiency of gas tightness testing result.
Drawings
The description includes the following figures, the contents shown are respectively:
FIG. 1 is a schematic view of a sealing tool for detecting air tightness of a wire harness of an electric power steering system of an automobile in a use state;
FIG. 2 is a schematic structural diagram of a sealing tool for detecting air tightness of a wire harness of an electric power steering system of an automobile;
FIG. 3 is another schematic structural diagram of a sealing tool for detecting the air tightness of a wire harness of an electric power steering system of an automobile;
FIG. 4 is a schematic diagram of a sensor harness and motor harness positioning structure;
FIG. 5 is a schematic structural view of a wire harness positioning block and a wire harness sealing block;
FIG. 6 is a front view of a sealing tool for detecting air tightness of a wire harness of an electric power steering system of an automobile;
FIG. 7 isbase:Sub>A cross-sectional view A-A of FIG. 6;
FIG. 8 is an enlarged fragmentary view of a cutaway section of the sensor harness and the motor harness of FIG. 7;
FIG. 9 is a cross-sectional view of B-B and C-C of FIG. 6;
labeled as: 1. positioning the bottom plate; 2. a limiting vertical plate; 3. m5x15 hexagon socket bolts; 4. a limiting gasket; 5. positioning and guiding vertical rods; 6. oilless shaft sleeves; 7. a handle; 8. a movable limit plate; 9. an O-shaped sealing ring; 10. a return spring; 11. m6x25 hexagon socket bolts; 12. m6x35 hexagon socket head cap screw; 13. a sensor wire harness positioning block; 14. a sensor wire harness sealing block; 15. a motor wire harness positioning block; 16. a motor wire harness sealing block; 17. m8x40 hexagon socket head cap screws; 18. m8x60 hexagon socket bolts; 19. sensor wire harness plugging sleeve; 20. plugging a motor wire harness; 21. a hexagonal nut; 22. a movable push plate; 23. positioning the guide cross bar; 24. pushing the plate; 25. a clamp assembly; 26. m5x20 hexagon socket head cap screws; 2701. a motor harness (negative electrode); 2702. a motor harness (positive electrode); 2703. a motor wire harness corrugated pipe; 2704. a motor harness electrical lead; 2705. a motor wire harness sheath; 2801. a sensor harness; 2802. a sensor harness electrical lead; 2803. a sensor wire harness sheath; 2804. sensor harness bellows.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.
It should be noted that, in the following embodiments, the terms "first", "second" and "third" do not denote absolute differences in structure and/or function, nor do they denote a sequential order of execution, but rather are used for convenience of description.
As shown in fig. 1 to fig. 9, the utility model provides an auto electric power assisted steering system pencil gas tightness detects with sealed frock, including positioning plate 1, set up spacing riser 2 on positioning plate 1, portable movable push pedal 22 and the activity limiting plate 8 that sets up, set up sensor pencil plug bush 19 and motor pencil plug bush 20 on activity push pedal 22, be used for fixing a position the sensor pencil and cooperate with sensor pencil plug bush 19 and realize sealed first positioning mechanism, be used for fixing a position the motor pencil and cooperate with motor pencil plug bush 20 and realize sealed second positioning mechanism and to the clamp assembly 25 of exerting pressure to activity push pedal 22, first positioning mechanism and second positioning mechanism are connected with spacing riser 2 and activity limiting plate 8.
Specifically, as shown in fig. 2 to 9, the first positioning mechanism includes a sensor harness positioning block 13 and a sensor harness sealing block 14 disposed on the sensor harness positioning block 13 and matched with the sensor harness plugging sleeve 19, the sensor harness positioning block 13 is provided with two sensor harness positioning blocks 13, the two sensor harness positioning blocks 13 are respectively connected with the vertical limiting plate 2 and the movable limiting plate 8, and a positioning groove for embedding the sensor harness is disposed on the sensor harness sealing block 14. The opening end of the sensor wire harness blocking sleeve 19 is provided with a first sealing conical surface, and after the two sensor wire harness sealing blocks 14 are inserted into the inner cavity of the sensor wire harness blocking sleeve 19, the semicircular conical surfaces on the two sensor wire harness sealing blocks 14 are in contact with the first sealing conical surface.
As shown in fig. 2 to 9, the second positioning mechanism includes a motor harness positioning block 15 and a motor harness sealing block 16 which is arranged on the motor harness positioning block 15 and is matched with the motor harness blocking sleeve 20, the motor harness positioning block 15 is provided with two motor harness positioning blocks 15, the two motor harness positioning blocks 15 are respectively connected with the limiting vertical plate 2 and the movable limiting plate 8, and a positioning groove for embedding the motor harness is arranged on the motor harness sealing block 16. The opening end of the motor wire harness plugging sleeve 20 is provided with a second sealing conical surface, and after the two motor wire harness sealing blocks 16 are inserted into the inner cavity of the motor wire harness plugging sleeve 20, the semi-conical surfaces on the two motor wire harness sealing blocks 16 are in contact with the second sealing conical surface.
As shown in fig. 2 to 9, countersunk holes for assembling M6x25 hexagon socket head cap bolts 11 and M6x35 hexagon socket head cap bolts 12 are provided on both ends of the positioning base plate 1, the M6x25 hexagon socket head cap bolts 11 and M6x35 hexagon socket head cap bolts 12 are respectively locked with the threaded holes at the lower ends of the limiting vertical plate 2 and the push plate 24 at both ends of the positioning base plate 1, and the limiting vertical plate 2 and the push plate 24 are respectively fixedly provided at both ends of the positioning base plate 1 in the length direction.
As shown in fig. 2 to 9, the limiting vertical plate 2 is T-shaped, the lower end surface of the limiting vertical plate 2 is provided with an internal threaded hole, the upper end of the limiting vertical plate 2 is provided with two concave grooves which can avoid the sensor harness 2801, the motor harness (negative pole) 2701 and the motor harness (positive pole) 2702, the sensor harness 2801 passes through one concave groove on the limiting vertical plate 2, and the motor harness (negative pole) 2701 and the motor harness (positive pole) 2702 pass through the other concave groove on the limiting vertical plate 2, so that the insulating rubber material on the surface of each harness is ensured not to be damaged and deformed by being clamped by the limiting vertical plate 2 and the movable limiting plate 8. Two deeper counter bores are formed in two sides of the upper end face of the limiting vertical plate 2, and the two positioning guide vertical rods 5 and the M6x35 hexagon socket head cap screws 12 are assembled to be fixed with the positioning bottom plate 1. Spacing riser 2 and location direction pole setting 5 are vertical setting, and location bottom plate 1 is the level setting. The front end face of the limiting vertical plate 2 is respectively provided with two counter bores for positioning and assembling the M6x25 hexagon socket head cap screw 11 and four counter bores for positioning and assembling the M5x20 hexagon socket head cap screw 26.
As shown in fig. 2 to 9, the positioning and guiding vertical rod 5 is used for guiding the movable limiting plate 8, the positioning and guiding vertical rod 5 is a circular rod, and two coaxial internal threads are arranged on two end faces of the positioning and guiding vertical rod 5. The excircle of location direction pole setting 5 and spacing riser 2 go up two deeper counter sink clearance fits, the lower extreme of location direction pole setting 5 passes through M6x35 hexagon socket head cap screw 12 locking location at spacing riser 2, the upper end of location direction pole setting 5 is provided with an O type sealing washer 9 and a spacing gasket 4, fix a position with M5x15 hexagon socket head cap screw 3 with spacing gasket 4 locking in location direction pole setting 5 upper end, O type sealing washer 9 cover is established in the upper end of location direction pole setting 5 and is located the below of spacing gasket 4.
As shown in fig. 2 to 9, the movable limiting plate 8 is located above the limiting vertical plate 2, the lower end face of the movable limiting plate 8 can contact with the upper end face of the limiting vertical plate 2, the lower end of the movable limiting plate 8 is provided with two concave grooves, the sensor wire harness (negative electrode) 2801, the motor wire harness (positive electrode) 2701 and the motor wire harness (positive electrode) 2702 can be avoided, the sensor wire harness 2801 penetrates through one concave groove on the movable limiting plate 8, the motor wire harness (negative electrode) 2701 and the motor wire harness (positive electrode) 2702 penetrate through the other concave groove on the movable limiting plate 8, and it is ensured that the insulating rubber material on the surface of each wire harness is not clamped and deformed by the limiting vertical plate 2 and the movable limiting plate 8. Each concave groove on the movable limiting plate 8 is aligned with one concave groove on the limiting vertical plate 2. Two sides of the lower end face of the movable limiting plate 8 are provided with two deeper counter bores, and oil-free shaft sleeves 6 which are provided with return springs 10 and are in interference fit with the counter bores are arranged in the counter bores. The inner hole of the oilless shaft sleeve 6 is in clearance fit with the outer circle of the positioning guide vertical rod 5, and the positioning guide vertical rod 5 penetrates through the return spring 10 and the oilless shaft sleeve 6. The return spring 10 exerts the elastic acting force which enables the movable limiting plate 8 to move upwards on the movable limiting plate 8, after the downward pressure exerted on the movable limiting plate 8 disappears, the movable limiting plate 8 can return to the position of the O-shaped sealing ring 9 with the buffering effect rapidly under the action of the return spring 10, and the movable limiting plate 8 is separated from the limiting vertical plate 2. An internal threaded hole is formed in the middle of the upper end face of the movable limiting plate 8, a handle 7 with a spherical structure is installed in the internal threaded hole, and the handle 7 is used for being held by an operator to receive pressure applied by the operator. The front end face of the movable limiting plate 8 is respectively provided with four counter bores which are used for positioning and assembling M5x20 hexagon socket head bolts 26 on the limiting vertical plate 2.
As shown in fig. 2 to 9, the vertical limiting plate 2 and the movable limiting plate 8 are respectively provided with a sensor harness positioning block 13, the sensor harness positioning block 13 is in a semi-circular arc shape, and a first arc-shaped groove is formed in the middle of the sensor harness positioning block 13 and can avoid the sensor harness 2801, so that the surface insulation rubber material of the sensor harness is prevented from being damaged and deformed. A second arc-shaped groove and a third arc-shaped groove which are coaxial with the first arc-shaped groove are formed in the sensor wire harness positioning block 13, the second arc-shaped groove is communicated with the third arc-shaped groove, and the second arc-shaped groove is located between the first arc-shaped groove and the third arc-shaped groove. The second arc-shaped groove and the third arc-shaped groove are in interference fit with the arc-shaped size of the sensor wire harness sealing block 14 with the corresponding size. The end face of the sensor wire harness positioning block 13 is provided with two internal thread holes, and the two sensor wire harness positioning blocks 13 are respectively positioned and locked on the limiting vertical plate 2 and the movable limiting plate 8 through M5x20 hexagon socket head cap bolts 26.
As shown in fig. 2 to 9, two sensor harness sealing blocks 14 are mounted on the sensor harness positioning block 13, and the two sensor harness sealing blocks 14 cooperate to clamp the sensor harness 2801. The sensor wire harness sealing block 14 is made of polyurethane high-strength rubber bar material, and has the characteristics of good elasticity and sealing performance, abrasion resistance, good compression deformation resistance and the like. The structure of the sealed piece 14 of sensor pencil is T font semicircle shape, and the horizontal surface middle part of the sealed piece 14 of sensor pencil is equipped with the constant head tank, and this constant head tank contacts with the sensor pencil 2801 excircle surface and forms sealed face, and this constant head tank is semicircular groove and constant head tank and runs through the setting for the axial along the sealed piece 14 of sensor pencil. The front end of the sensor wire harness sealing block 14 is provided with a semi-circular arc-shaped convex block, and the semi-circular arc-shaped convex block is in interference fit with a second arc-shaped groove of the sensor wire harness positioning block 13, so that the sensor wire harness sealing block 14 can be fixed on the sensor wire harness positioning block 13, the sensor wire harness sealing block is ensured not to fall off after assembly, and meanwhile, wire harness sealing blocks of other models and sizes can be conveniently replaced. The semi-circular arc that the middle part of the sealed piece 14 of sensor pencil set up and the third arc recess positioning center of sensor pencil locating piece 13, the interior disc laminating of the semi-circular arc's that the middle part of the sealed piece 14 of sensor pencil set up surface and the third arc recess of sensor pencil locating piece 13. The tail end of the sensor wire harness sealing block 14 is provided with a conical semi-arc structure, the outer surface of the position is a semi-conical surface, and the semi-conical surface, the positioning groove and the semi-arc surface arranged in the middle are coaxially arranged. The horizontal surfaces of the two sensor wire harness sealing blocks 14 are oppositely arranged, in the using process, the upper sensor wire harness sealing block 14 and the lower sensor wire harness sealing block 14 are spliced together, the horizontal surfaces of the two sensor wire harness sealing blocks 14 are attached together, the positioning grooves of the two sensor wire harness sealing blocks 14 are in a coaxial and communicated state, a complete circular hole is formed after the two positioning grooves are spliced together, the semi-circular conical surfaces at the tail ends of the two sensor wire harness sealing blocks 14 are coaxial, the semi-circular conical surfaces at the tail ends of the two sensor wire harness sealing blocks 14 are spliced together to form a complete conical surface, and meanwhile, the upper sensor wire harness positioning block 13 and the lower sensor wire harness positioning block 13 are also spliced together to form a complete circular positioning block structure; after the two sensor wire harness sealing blocks 14 are inserted into the inner cavity of the sensor wire harness plugging sleeve 19, under the pressure of the taper hole of the sensor wire harness plugging sleeve 19, the semi-conical surfaces at the tail ends of the two sensor wire harness sealing blocks 14 are attached to the first sealing conical surface arranged at the opening end of the sensor wire harness plugging sleeve 19, the first sealing conical surface is the same as the taper of the semi-conical surface arranged at the tail end of the sensor wire harness sealing block 14, a full-circle sealing effect is formed, a sensor wire harness sheath at the end part of the sensor wire harness is located in the inner cavity of the sensor wire harness plugging sleeve 19, and therefore the sensor wire harness sheath at the end part of the sensor wire harness is sealed through the matching of the two sensor wire harness sealing blocks 14 and the sensor wire harness plugging sleeve 19, and the accuracy of an air tightness detection result is prevented from being influenced due to air leakage at the position.
As shown in fig. 2 to 9, the limiting vertical plate 2 and the movable limiting plate 8 are respectively provided with a motor harness positioning block 15, the motor harness positioning block 15 is in a semi-arc shape, the middle part of the motor harness positioning block 15 is provided with a first arc-shaped groove which can avoid a motor harness (negative pole) 2701 and a motor harness (positive pole) 2702, and the deformation of the surface insulation rubber material is ensured not to be damaged by clamping. A second arc-shaped groove and a third arc-shaped groove which are coaxial with the first arc-shaped groove are formed in the motor wire harness positioning block 15, the second arc-shaped groove is communicated with the third arc-shaped groove, and the second arc-shaped groove is located between the first arc-shaped groove and the third arc-shaped groove. The second arc-shaped groove and the third arc-shaped groove are in interference fit with the arc-shaped size of the corresponding size on the motor wire harness sealing block 16. Two internal thread holes are formed in the end face of the motor wire harness positioning block 15, and the two motor wire harness positioning blocks 15 are positioned and locked on the limiting vertical plate 2 and the movable limiting plate 8 through M5x20 hexagon socket head cap bolts 26 respectively.
As shown in fig. 2 to 9, two motor harness sealing blocks 16 are mounted on the motor harness positioning block 15, and the two motor harness sealing blocks 16 are matched to clamp the motor harness. The motor wire harness sealing block 16 is made of polyurethane high-strength rubber bar material, and has the characteristics of good elasticity and sealing performance, abrasion resistance, good compression deformation resistance and the like. The structure of the motor wiring harness sealing block 16 is in a T-shaped semicircular arc shape, two positioning grooves are arranged on the horizontal surface of the motor wiring harness sealing block 16, the two positioning grooves are respectively contacted with the outer circle surfaces of the motor wiring harness (negative pole) 2701 and the motor wiring harness (positive pole) 2702 to form a sealing surface, the motor wiring harness (negative pole) 2701 and the motor wiring harness (positive pole) 2702 are respectively embedded into one positioning groove, and the positioning groove is a semicircular groove and is arranged in a penetrating mode along the axial direction of the motor wiring harness sealing block 16. The front end of the motor wire harness sealing block 16 is provided with a semi-circular arc-shaped convex block, and the semi-circular arc-shaped convex block is in interference fit with a second arc-shaped groove of the motor wire harness positioning block 15, so that the motor wire harness sealing block 16 can be fixed on the motor wire harness positioning block 15, the motor wire harness sealing block is ensured not to fall off after being assembled, and meanwhile, the wire harness sealing blocks of other models and sizes are conveniently replaced. The semi-circular arc that the middle part of the sealed piece 16 of motor pencil set up and the third arc recess positioning center of motor pencil locating piece 15, the semi-circular arc's that the middle part of the sealed piece 16 of motor pencil set up surface and the interior disc laminating of the third arc recess of motor pencil locating piece 15. The tail end of the motor wire harness sealing block 16 is provided with a conical semi-arc structure, the outer surface of the part is a semi-conical surface, and the semi-conical surface, the positioning groove and the semi-arc surface arranged in the middle are coaxially arranged. The horizontal surfaces of the two motor wire harness sealing blocks 16 are oppositely arranged, in the using process, the upper motor wire harness sealing block 16 and the lower motor wire harness sealing block 16 are spliced together, the horizontal surfaces of the two motor wire harness sealing blocks 16 are attached together, the positioning grooves of the two motor wire harness sealing blocks 16 are in a coaxial and communicated state, a complete circular hole is formed after the two positioning grooves are spliced together, the semi-circular conical surfaces at the tail ends of the two motor wire harness sealing blocks 16 are coaxial, the semi-circular conical surfaces at the tail ends of the two motor wire harness sealing blocks 16 are spliced together to form a complete conical surface, and meanwhile, the upper motor wire harness positioning block 15 and the lower motor wire harness positioning block 15 are also spliced together to form a complete circular positioning block structure; after the two motor harness sealing blocks 16 are inserted into the inner cavity of the motor harness plugging sleeve 20, under the pressure of the taper hole of the motor harness plugging sleeve 20, the semi-conical surfaces at the tail ends of the two motor harness sealing blocks 16 are attached to the second sealing conical surface arranged at the opening end of the motor harness plugging sleeve 20, the second sealing conical surface is the same as the taper of the semi-conical surface arranged at the tail end of the motor harness sealing block 16, a full-circle sealing effect is formed, a motor harness sheath at the end of the motor harness is located in the inner cavity of the motor harness plugging sleeve 20, and therefore the sealing of the motor harness sheath at the end of the motor harness is achieved through the matching of the two motor harness sealing blocks 16 and the motor harness plugging sleeve 20 (the electric lead sheath is simultaneously connected with the motor harness (cathode) 2701 and the motor harness (anode) 2702), and the problem that the air leakage occurs here to affect the accuracy of an air tightness detection result is avoided.
As shown in fig. 2 to 9, the lower end surface of the push plate 24 is provided with three internal threaded holes for connecting with the M6x25 hexagon socket head cap screw 11, the upper end portion of the push plate 24 is provided with a concave groove, a through hole assembled with the clamp assembly 25 is arranged in the groove, and two counter bores for positioning and assembling the M6x25 hexagon socket head cap screw 11 are respectively arranged on two sides of the rear end surface of the push plate 24.
As shown in fig. 2 to 9, the clamp assembly 25 is mounted on the push plate 24, and the clamp assembly 25 is locked with a nut through a through hole of a concave groove of the push plate 24. The structure of the clamp assembly 25 is as known to those skilled in the art, the middle of the push rod of the clamp assembly 25 is provided with internal threads, the M8x60 hexagon socket head cap 18 and the hexagon nut 21 are locked and connected with a counter bore in the middle of the movable push plate 2222, the lengths of the two hexagon nuts 21 and the M8x60 hexagon socket head cap bolt 18 are adjusted, the moving distance of the movable push plate 22 along the direction of the positioning guide cross rod 23 can be adjusted, and the adjustment of the sealing compression amount between the first sealing conical surfaces of the sensor harness sealing block 14 and the sensor harness plugging sleeve 19 and between the motor harness sealing block 16 and the second sealing conical surface of the motor harness plugging sleeve 20 is realized.
As shown in fig. 2 to 9, the positioning guide rail 23 is a circular bar, and two coaxial internal threads are provided on two end surfaces of the positioning guide rail 23. The excircle of the positioning guide cross rod 23 is in clearance fit with the inner holes of the two oilless shaft sleeves 6 on the movable push plate 22, the positioning guide cross rod 23 is locked by an M6x25 hexagon socket head cap screw 11, the inner threads at two ends are positioned between the limiting vertical plate 2 and the push plate 24, and the axis of the positioning guide cross rod 23 is parallel to the axes of the sensor wire harness sealing block 14 and the motor wire harness sealing block 16.
As shown in fig. 2 to 9, the movable push plate 22 is rectangular, a countersunk hole for accommodating the M8x60 hexagon socket head cap screw 18 is formed in the middle of the movable push plate 22, two through holes in interference fit with the outer circle of the oilless shaft sleeve 6 are formed in two sides of the end surface of the movable push plate 22, the two through holes and the oilless shaft sleeve 6 penetrate through the two positioning guide cross rods 23, and the movable push plate 22 can move along the axis of the positioning guide cross rods 23. The other end face of the movable push plate 22 is provided with two counter bores for mounting the M8x40 hexagon socket head cap bolts 17, the lengths of the two hexagon nuts 21 and the rotary M8x40 hexagon socket head cap bolts 18 are adjusted, the moving distance of the sensor wire harness plugging sleeve 19 and the motor wire harness plugging sleeve 20 along the axial direction of the positioning guide cross rod 23 can be adjusted, and the sealing compression amount between the sensor wire harness sealing block 14, the sensor wire harness plugging sleeve 19 and the conical surface of the motor wire harness plugging sleeve 20 are adjusted.
As shown in fig. 2 to 9, the sensor harness blocking sleeve 19 is in a circular bar shape, and an internal threaded hole screwed with the M8x40 hexagon socket head cap screw 17 is formed in the middle of the sensor harness blocking sleeve 19. The sensor wire harness blocking sleeve 19 is a cylinder with one open end and the other closed end, the sensor wire harness blocking sleeve 19 and the sensor wire harness positioning block 13 and the sensor wire harness sealing block 14 which are arranged on the limiting vertical plate 2 are coaxially arranged, the closed end of the sensor wire harness blocking sleeve 19 is installed on the movable push plate 22 through the M8x40 hexagon socket head cap bolt 17, the inside of the open end of the sensor wire harness blocking sleeve 19 is provided with a first sealing conical surface which is used for being in contact with the outer conical surfaces of the two sensor wire harness sealing blocks 14, and a better sealing effect can be achieved through extrusion of the conical surfaces.
As shown in fig. 2 to 9, the motor harness blocking sleeve 20 is in a circular bar shape, and an internal threaded hole screwed with the M8x40 hexagon socket head cap screw 17 is formed in the middle of the motor harness blocking sleeve 20. The motor wiring harness blocking sleeve 20 is a cylinder with an open end and a closed end, the motor wiring harness blocking sleeve 20 is coaxially arranged with a motor wiring harness positioning block 15 and a motor wiring harness sealing block 16 which are arranged on the limiting vertical plate 2, the axis of the motor wiring harness blocking sleeve 20 and the axis of the sensor wiring harness blocking sleeve 19 are parallel to the axis of the positioning guide cross rod 23, the closed end of the motor wiring harness blocking sleeve 20 is installed on the movable push plate 22 through the M8x40 inner hexagon bolt 17, the inside of the open end of the motor wiring harness blocking sleeve 20 is provided with a second sealing conical surface which is used for being in contact with the outer conical surfaces of the two motor wiring harness sealing blocks 16, and a better sealing effect can be achieved through extrusion of the conical surfaces.
The sealing tool for the air tightness detection of the automobile electric power steering system wire harness with the structure has the following specific operation flow and principle in brief: as shown in fig. 2 to 9, the sensor harness sheath 2803 and the motor harness sheath 2705 are respectively placed in inner cavities of the sensor harness plug 19 and the motor harness plug 20, the sensor harness 2801 is placed in positioning grooves on the sensor harness sealing block 14 at the position of the vertical limiting plate 2, the motor harness (negative pole) 2701 and the motor harness (positive pole) 2702 are placed in two positioning grooves on the motor harness sealing block 16 at the position of the vertical limiting plate 2, the handle 7 on the movable limiting plate 8 is pushed downwards by a hand to move to the movable limiting plate 8 to be jointed with the end face of the vertical limiting plate 2, and then the handle on the clamp assembly 25 is pulled to a locking position, so that the sensor harness plug 19 and the motor harness plug 20 are pressed with upper conical surfaces of the upper and lower sensor harness sealing blocks 14 and the upper and lower motor harness sealing blocks 16 to form a sealing space, thereby realizing sealing of the harness end portion sheaths.
After sealing is finished, air tightness detection can be carried out, the automobile electric power steering system is connected with air tightness detection equipment, and the air tightness detection equipment introduces air into the automobile electric power steering system; and (3) starting an air tightness detection device for detection, after the test is qualified, firstly pressing a handle 7 on a movable limiting plate 8 downwards by a hand, then loosening a clamp assembly 25 to the tail end position by the other hand, loosening the hand pressing the handle 7 on the movable limiting plate 8, moving the movable limiting plate 8 upwards to the position of an O-shaped sealing ring 9 under the action of a return spring, separating a sensor wire harness positioning block 13, a sensor wire harness sealing block 14, a motor wire harness positioning block 15 and a motor wire harness sealing block 16 on the movable limiting plate 8 from the end of a limiting vertical plate 2, and taking down the sensor wire harness 2801, the motor wire harness (cathode) 2701 and the motor wire harness (anode) 2702 to finish the air tightness detection of the automobile electric power-assisted steering system.
The sealing tool for detecting the air tightness of the wire harness of the automobile electric power steering system with the structure solves the problem that the wire harness is not well sealed in the air tightness detection process. The tool is compact in structure, and the sensor wire harness and the motor wire harness pass through the arc-shaped grooves in the two same sealing blocks, so that the better sealing performance and the service life are improved under the action of the taper sleeves; through manual compressing tightly or unclamping clamp assembly 25, sealed equipment and the disassembling when realizing the detection of automobile electric power assisted steering system pencil gas tightness, its easy operation, swift has improved qualification rate and work efficiency when the product gas tightness detects.
The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. As long as the method conception and the technical scheme of the utility model are adopted for various insubstantial improvements; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.
Claims (10)
1. Sealed frock is used in detection of auto electric power assisted steering system pencil gas tightness, its characterized in that: the automatic sensor harness positioning device comprises a positioning bottom plate, a limiting vertical plate arranged on the positioning bottom plate, a movable push plate and a movable limiting plate which are movably arranged, a sensor harness blocking sleeve and a motor harness blocking sleeve which are arranged on the movable push plate, a first positioning mechanism used for positioning a sensor harness and matching with the sensor harness blocking sleeve to realize sealing, a second positioning mechanism used for positioning the motor harness and matching with the motor harness blocking sleeve to realize sealing, and a clamp assembly for applying pressure to the movable push plate, wherein the first positioning mechanism and the second positioning mechanism are connected with the limiting vertical plate and the movable limiting plate.
2. The sealed tool for detecting the air tightness of the wire harness of the automobile electric power steering system according to claim 1, characterized in that: the first positioning mechanism comprises a sensor harness positioning block and a sensor harness sealing block, wherein the sensor harness positioning block is arranged on the sensor harness positioning block and matched with the sensor harness blocking sleeve, the sensor harness positioning block is provided with two sensor harness positioning blocks which are respectively connected with the limiting vertical plate and the movable limiting plate, and a positioning groove for embedding the sensor harness is formed in the sensor harness sealing block.
3. The sealing tool for the airtightness detection of the wire harness of the automobile electric power steering system according to claim 2, is characterized in that: the opening end of the sensor wire harness plugging sleeve is provided with a first sealing conical surface, and after the two sensor wire harness sealing blocks are inserted into the inner cavity of the sensor wire harness plugging sleeve, the semi-conical surfaces on the two sensor wire harness sealing blocks are in contact with the first sealing conical surface.
4. The sealing tool for the airtightness detection of the wire harness of the automobile electric power steering system according to claim 2, is characterized in that: the second positioning mechanism comprises a motor wire harness positioning block and a motor wire harness sealing block which is arranged on the motor wire harness positioning block and matched with the motor wire harness plugging sleeve, the motor wire harness positioning block is provided with two motor wire harness positioning blocks and two motor wire harness positioning blocks respectively connected with the limiting vertical plate and the movable limiting plate, and a positioning groove for embedding the motor wire harness is formed in the motor wire harness sealing block.
5. The sealed frock of claim 4 for the detection of auto electric power assisted steering system pencil gas tightness, its characterized in that: the opening end of the motor wire harness plugging sleeve is provided with a second sealing conical surface, and after the two motor wire harness sealing blocks are inserted into the inner cavity of the motor wire harness plugging sleeve, semi-conical surfaces on the two motor wire harness sealing blocks are in contact with the second sealing conical surface.
6. The sealing tool for the airtightness detection of the wire harness of the automotive electric power steering system according to any one of claims 1 to 4, is characterized in that: the limiting vertical plate is provided with a positioning guide vertical rod, the movable limiting plate is provided with a through hole for the positioning guide vertical rod to pass through, a return spring is arranged between the limiting vertical plate and the movable limiting plate, and the return spring is sleeved on the positioning guide vertical rod.
7. The sealing tool for the airtightness detection of the wire harness of the automobile electric power steering system according to any one of claims 1 to 4, characterized in that: the lower end of the movable limiting plate is provided with two concave grooves for the sensor wire harness and the motor wire harness to pass through respectively, and the upper end of the limiting vertical plate is also provided with two concave grooves for the sensor wire harness and the motor wire harness to pass through respectively.
8. The sealing tool for the airtightness detection of the wire harness of the automotive electric power steering system according to any one of claims 1 to 4, is characterized in that: the limiting vertical plate is provided with a positioning guide cross rod, and the movable push plate is provided with a through hole for the positioning guide cross rod to pass through.
9. The sealing tool for the airtightness detection of the wire harness of the automobile electric power steering system according to claim 8, is characterized in that: the two positioning guide cross rods are arranged, and the sensor wire harness blocking sleeve and the motor wire harness blocking sleeve are located between the two positioning guide cross rods.
10. The sealing tool for the airtightness detection of the wire harness of the automobile electric power steering system according to claim 4, is characterized in that: the sensor wire harness sealing block and the motor wire harness sealing block are made of polyurethane high-strength rubber rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222289421.3U CN217878191U (en) | 2022-08-29 | 2022-08-29 | Sealing tool for detecting air tightness of wire harness of automobile electric power steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222289421.3U CN217878191U (en) | 2022-08-29 | 2022-08-29 | Sealing tool for detecting air tightness of wire harness of automobile electric power steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217878191U true CN217878191U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222289421.3U Active CN217878191U (en) | 2022-08-29 | 2022-08-29 | Sealing tool for detecting air tightness of wire harness of automobile electric power steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217878191U (en) |
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2022
- 2022-08-29 CN CN202222289421.3U patent/CN217878191U/en active Active
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