General tool for EMC (Electro Magnetic Compatibility) test

Abstract

The utility model discloses a general tool for EMC (Electro Magnetic Compatibility) testing. The general tool comprises a bottom plate, an adjusting mechanism, an upper mounting and supporting mechanism and a lower mounting and supporting mechanism, wherein the adjusting mechanism is installed above the bottom plate and connected with the bottom plate through an adjusting bolt, the upper installation supporting module is fixed above the bottom plate through a bolt, and the upper end face of the upper installation supporting module is fixedly connected with an upper installation point of a CEPS tubular column assembly; and the lower mounting mechanism is arranged behind the upper mounting support module and is fixed on the bottom plate. The testing tool solves the problems that an existing tool is complex in design and high in production cost. Meanwhile, the device is suitable for most CEPS electric power steering column assemblies in the market, and can effectively reduce the skill dependence of testers, reduce test errors and greatly improve the accuracy, thereby greatly guaranteeing the product quality and improving the production efficiency.

Description

Technical Field

[0001] The utility model relates to a testing tool, in particular to a universal tool for EMC testing of an electric power steering column shaft assembly, belonging to the technical field of automobile parts processing. Background Art

[0002] According to the applicant, most cars currently use electric power steering systems, and EMC testing is a necessity. Due to the wide variety of EPS columns and the uneven levels of third-party testing institutions, the existing CEPS electric power steering column assembly EMC testing tooling is complex and unreasonable in design, with poor redundancy, unreasonable design of some structures, and poor compatibility, resulting in large testing errors and high dependence on employees. Utility Model Content

[0003] The purpose of the utility model is to address the problems existing in the above-mentioned prior art and to provide a universal EMC test tool which has a reasonable structure, is easy to use and can realize full-automatic testing.

[0004] To achieve the above objectives, the specific technical solution of the present invention is as follows: a universal EMC test tool, comprising a base plate, on which a plurality of holes are sequentially opened along the installation direction of the CEPS column assembly, and an adjustment mechanism, an upper mounting support mechanism, and a lower mounting mechanism are fixedly installed in the holes;

[0005] The adjustment mechanism can move up and down along the vertical direction of the tooling, and drive the upper steering shaft of the CEPS column assembly to rotate along the axis; the upper mounting support mechanism is movably installed above the base plate by fasteners, and the upper end surface is connected and fixed to the upper mounting point of the CEPS column assembly; the lower mounting mechanism is arranged behind the upper mounting support mechanism, and is connected and fixed to the lower mounting point of the CEPS column assembly.

[0006] Furthermore, the adjustment mechanism includes a left adjusting bolt, a right adjusting bolt and a spline sleeve; the spline sleeve is placed horizontally along the base plate, and a mounting hole matching the upper steering shaft is opened in the center thereof. The left adjusting bolt and the right adjusting bolt are symmetrically arranged and vertically fixed to the base plate. Spline sleeve through holes are provided at both ends of the spline sleeve. After the left and right adjusting bolts pass through the spline sleeve through holes, the upper steering shaft, spline sleeve, adjusting bolt and base plate are connected and fixed.

[0007] Furthermore, the upper mounting support mechanism is composed of a symmetrically arranged upper mounting support mechanism body, which includes an upper mounting support module movably mounted on the base plate, a hexagon socket bolt for supporting and fixing the upper mounting point of the CEPS column assembly, and a first fixing bolt for fixing the upper mounting support module;

[0008] Threaded holes are respectively provided on the upper and lower end surfaces of the upper mounting support module, and the hexagon socket bolt is passed through the waist-shaped through-hole of the CEPS column assembly shear block and fastened with the threaded hole on the upper end surface of the upper mounting support block; the upper part of the first fixing bolt is fastened with the threaded hole on the lower end surface of the upper mounting support block, and the lower part is fastened after passing through the module mounting hole on the base plate, so that the upper mounting support block is fastened to the base plate.

[0009] Furthermore, the module mounting hole is a waist-shaped bolt through hole, and the upper mounting support module can move left and right along the waist-shaped bolt through hole to achieve free left and right adjustment.

[0010] Furthermore, the waist-shaped bolt through hole is a stepped hole. After the first fastening bolt passes through the stepped hole, its large head end surface contacts the step and is fastened.

[0011] Furthermore, the lower mounting mechanism includes a lower mounting support plate, and both ends of the bottom of the lower mounting support plate are vertically fixed to the base plate by symmetrically arranged second fixing bolts;

[0012] A locking fork module is provided on one side of the lower mounting support plate corresponding to the output shaft of the CEPS column assembly. The locking fork module can move up and down along the lower mounting support plate, and the other side has a rectangular slot for reducing the overall weight of the tooling.

[0013] Furthermore, the upper part of the second fixing bolt is inserted into the threaded hole at the bottom of the lower mounting support plate and fastened thereto, and the lower part is installed in the support plate hole on the base plate; the support plate hole is oblong and is arranged along the longitudinal direction of the base plate, and the lower mounting support plate can move back and forth along the support plate hole.

[0014] Furthermore, the locking fork module consists of a locking fork, a horizontal plate and a vertical plate, which are welded into a whole; the tail of the locking fork is fixed to the inner side of the lower mounting support plate by a fixing bolt installed on the vertical plate, and the end of the locking fork is connected to the output shaft spline of the CEPS column assembly. The vertical plate is arranged parallel to the outer side of the locking fork, and the horizontal plate is arranged below the outer side of the vertical plate, and a nut for fixing the lower mounting point of the CEPS column assembly is installed on it.

[0015] Furthermore, handles are symmetrically fixedly installed on both sides of the base plate to facilitate movement and operation.

[0016] Compared with the existing technology, the outstanding progress of the present invention is as follows: the test fixture of the present invention solves the problems of complex design and high production cost of the existing fixture; at the same time, the utility model has strong versatility, and can drive the spline sleeve to move up and down, the upper mounting support module to move left and right, the locking fork module to move up and down, and the lower mounting support plate to move forward and backward by adjusting the bolt. These modules are compatible with different three-dimensional installation dimensions of CEPS column assemblies, achieving compatibility of upper and lower mounting points. In addition, the spline sleeve can be customized according to the interface dimensions of different customers, and the locking fork can directly borrow the universal joint fork parts / customized production of the project. As a single movable component, it can achieve rapid changeover, which is suitable for most CEPS electric power steering column assemblies on the market, and can effectively reduce the high dependence on the skills of testers, reduce test errors, and greatly improve accuracy, thereby greatly ensuring product quality and improving production efficiency.

[0017] The utility model has a reasonable layout and low production cost, is suitable for mass production, and can meet the market demand for carrying out this work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] Figure 2 It is a front view of the utility model.

[0021] Figure 3 for Figure 2 Bottom view of .

[0022] Figure 4 for Figure 2 Right view of .

[0023] Figure 5 for Figure 2 Top view of .

[0024] Figure 6 for Figure 2 Left view of .

[0025] Figure 7 This is a diagram of the usage state of the utility model.

[0026] Description of the drawings: 1-base plate; 2-adjusting bolt; 3-spline sleeve; 4-upper mounting support block; 5-hexagon socket bolt; 6-handle; 7-cross plate; 8-support bolt; 9-locking fork; 10-vertical plate; 11-lower mounting support plate; 12-first fixing bolt; 13-nut; 14-second fixing bolt; 15-third fixing bolt. DETAILED DESCRIPTION

[0027] This embodiment provides a universal EMC test tool, the structure of which is as follows Figures 1 to 6 As shown, it includes a base plate 1, an adjustment mechanism, an upper mounting support mechanism and a lower mounting support mechanism.

[0028] The adjustment mechanism is mounted above the baseplate and comprises two symmetrically arranged adjustment bolts 2 and a splined sleeve 3. The splined sleeve is positioned horizontally along the baseplate, with a mounting hole in its center that mates with the upper steering shaft. Splined sleeve holes are also provided at each end of the splined sleeve. Two vertically positioned adjustment bolts pass through the splined sleeve holes to securely connect the upper steering shaft, splined sleeve, adjustment bolts, and baseplate. The adjustment bolts can be moved up and down as needed. This movement is achieved by synchronously adjusting the two adjustment bolts in opposite directions. Because the splined sleeve locks the upper steering shaft, the upper steering shaft rotates in sync with it.

[0029] The upper mounting support mechanism is fixed to the top of the base plate by bolts, and its upper end face is connected and fixed to the mounting point on the CEPS column assembly. It includes an upper mounting support block 4, two hexagon socket bolts 5, and two first fixing bolts 12. Threaded holes are respectively provided on the upper and lower end faces of the upper mounting support module. The hexagon socket bolts pass through the waist-shaped through-holes of the shear block of the CEPS column assembly and are fastened to the threaded holes on the upper end face of the upper mounting support block. The upper part of the first fixing bolt is fastened to the threaded hole on the lower end face of the upper mounting support block, and the lower part passes through the module mounting hole on the base plate and is fastened, so that the upper mounting support block is fastened to the base plate. The module mounting hole is a waist-shaped bolt through-hole. The upper mounting support module can move left and right along the waist-shaped bolt through-hole, and can be freely adjusted left and right by adjusting the first fixing bolt.

[0030] The lower mounting mechanism is arranged behind the upper mounting support mechanism and is fixed to the long circular groove of the base plate by the second fixing bolt 14. It includes a third fixing bolt 15, a lower mounting support plate 11, a locking fork module, a locking bolt, a support bolt 8 and a nut 13.

[0031] The locking fork module consists of a locking fork 9, a horizontal plate 7, and a vertical plate 10. These three components are welded together and secured to the lower mounting support plate via a third fixing bolt 15, enabling vertical adjustment. The tail of the locking fork is secured to the inner side of the lower mounting support plate via fixing bolts mounted on the vertical plate. The end of the locking fork is splined to the output shaft of the CEPS column assembly. The vertical plate is positioned parallel to the outside of the locking fork, while the horizontal plate is positioned below and outside the vertical plate. Nuts 13 are mounted on it to secure the lower mounting point of the CEPS column assembly.

[0032] Two handles 6 are also installed on the base plate.

[0033] The working process of this embodiment is as follows: Figure 7As shown, first place the CEPS column assembly on the tooling, insert the output end into the locking fork, install the support bolt 8, insert the upper steering shaft into the spline sleeve, pre-tighten the two adjusting bolts, then tighten the two hexagonal bolts that pass through the mounting point on the CEPS column assembly, that is, the waist-shaped through-holes of the shear block. Finally, tighten the fastening bolts of each module, and start to set up the electronic control environment for EMC static testing. When the column needs to rotate slightly, loosen the two adjusting bolts and adjust one of the bolts. The spline sleeve can be used to fine-tune the rotation clockwise or counterclockwise along the axis of the CEPS column to meet the test working conditions. During all test processes, the upper mounting support module and the locking fork module are locked and fixed, and remain static and motionless.

[0034] Install the upper mounting point of the CEPS column assembly on the EMC test fixture installation support module, and install the lower mounting point on the lower mounting support plate through support bolts. Insert the output shaft spline into the inner spline of the locking fork module on the lower mounting support plate and insert the spline sleeve onto the upper steering shaft. Then, pass the two adjusting bolts through the bolt holes of the spline fixing block and connect them to the base plate.

[0035] During the test, connect the signal line and power line, and adjust the adjustment bolts up and down to complete the full EMC test process.

[0036] In addition to the above implementations, the present invention may also have other implementations. Any technical solution that adopts equivalent replacement or equivalent transformation forms falls within the scope of protection required by the present invention.

Claims

1. A universal tool for EMC testing, characterized by: The bottom plate comprises a plurality of holes sequentially formed on the bottom plate along the installation direction of the CEPS column assembly, and an adjustment mechanism, an upper mounting support mechanism and a lower mounting mechanism are fixedly mounted on the holes; The adjustment mechanism can move up and down along the vertical direction of the tooling, and drive the upper steering shaft of the CEPS column assembly to rotate along the axis; the upper mounting support mechanism is movably installed above the base plate by fasteners, and the upper end surface is connected and fixed to the upper mounting point of the CEPS column assembly; the lower mounting mechanism is arranged behind the upper mounting support mechanism, and is connected and fixed to the lower mounting point of the CEPS column assembly.

2. The universal EMC test tool according to claim 1, characterized in that: The adjustment mechanism includes a left adjusting bolt, a right adjusting bolt and a spline sleeve; the spline sleeve is placed horizontally along the base plate, and a mounting hole matching the upper steering shaft is opened in the center thereof; the left adjusting bolt and the right adjusting bolt are symmetrically arranged and vertically fixed to the base plate; spline sleeve through holes are provided at both ends of the spline sleeve; the left and right adjusting bolts pass through the spline sleeve through holes to connect and fix the upper steering shaft, spline sleeve, adjusting bolt and base plate.

3. The universal EMC test tool according to claim 1, characterized in that: The upper mounting support mechanism is composed of a symmetrically arranged upper mounting support mechanism body, which includes an upper mounting support module movably mounted on the base plate, a hexagon socket bolt for supporting and fixing the upper mounting point of the CEPS column assembly, and a first fixing bolt for fixing the upper mounting support module; Threaded holes are respectively provided on the upper and lower end surfaces of the upper mounting support module, and the hexagon socket bolt is passed through the waist-shaped through-hole of the shear block of the CEPS column assembly and fastened with the threaded hole on the upper end surface of the upper mounting support block; the upper part of the first fixing bolt is fastened with the threaded hole on the lower end surface of the upper mounting support block, and the lower part is fastened after passing through the module mounting hole on the base plate, so that the upper mounting support block is fastened to the base plate.

4. The universal EMC test tool according to claim 3, characterized in that: The module mounting hole is a waist-shaped bolt through hole, and the upper mounting support module can move left and right along the waist-shaped bolt through hole to achieve free left and right adjustment.

5. The universal EMC test tool according to claim 3, characterized in that: The waist-shaped bolt through hole is a stepped hole. After the first fastening bolt passes through the stepped hole, the large end surface of the first fastening bolt contacts the step and is fastened.

6. The universal EMC test tool according to claim 1, characterized in that: The lower mounting mechanism includes a lower mounting support plate, and both ends of the bottom of the lower mounting support plate are vertically fixed to the base plate by symmetrically arranged second fixing bolts; A locking fork module is provided on one side of the lower mounting support plate corresponding to the output shaft of the CEPS column assembly. The locking fork module can move up and down along the lower mounting support plate, and the other side has a rectangular slot for reducing the overall weight of the tooling.

7. The universal EMC test tool according to claim 6, characterized in that: The upper part of the second fixing bolt is inserted into the threaded hole at the bottom of the lower mounting support plate and fastened thereto, and the lower part is installed in the support plate hole on the base plate; the support plate hole is oblong and arranged along the longitudinal direction of the base plate, and the lower mounting support plate can move forward and backward along the support plate hole.

8. The universal EMC test tool according to claim 6, characterized in that: The locking fork module consists of a locking fork, a horizontal plate and a vertical plate, which are welded into a whole; the tail of the locking fork is fixed to the inner side of the lower mounting support plate by a fixing bolt installed on the vertical plate, and the end of the locking fork is connected to the output shaft spline of the CEPS column assembly. The vertical plate is arranged parallel to the outer side of the locking fork, and the horizontal plate is arranged below the outer side of the vertical plate, and a nut for fixing the lower mounting point of the CEPS column assembly is installed on it.

9. The universal EMC test tool according to claim 1, characterized in that: Handles are symmetrically fixedly installed on both sides of the base plate.

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