Laboratory multifunctional vehicle low-voltage wiring harness DV test bench

Abstract

The utility model relates to the technical field of automobile wire harness testing, in particular to a multifunctional rack for testing a whole automobile low-voltage wire harness DV in a laboratory, which solves the problem of insufficient applicability of a test rack in the prior art and comprises an automobile body frame, the automobile body frame comprises a plurality of length-adjustable frame telescopic rods, and a conducting strip is arranged on the automobile body frame. The beneficial effects of the utility model are that the frame telescoping rod can make the vehicle body frame expand and deform through telescoping, thereby changing various forms of the test bench, enabling the test bench to be suitable for vehicle types of different sizes, and enhancing the applicability of the test bench; the conducting strip can realize efficient electrical connection, and meets the connection requirement of an electric appliance loop during a DV test.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile wiring harness testing, in particular to a multifunctional laboratory-used bench for DV testing of low-voltage wiring harnesses of automobile complete vehicles. Background Art

[0002] The wiring harness is an important component of the automobile. It carries the power supply network and grounding loop of the vehicle's electrical equipment, realizes the power supply and grounding requirements of controllers and actuators at different positions, and is an important bridge for transmitting information between the vehicle's electrical system and various electronic components. It can be compared to the human nervous system and plays an irreplaceable and important role in the vehicle. The total length of the wires in the wiring harness is about 3 kilometers. Such a huge structure is integrated in the wiring harness, which carries the current transmission and information transmission capabilities of the entire vehicle. It is particularly important to reasonably and efficiently perform complete functional verification of each functional circuit. At present, the wiring harness verification on the market generally adopts 3D data simulation, theoretical analysis, supplier single product analysis, and actual vehicle installation verification. However, these methods and methods have their own defects.

[0003] Patent number CN220104502U discloses a vehicle system test bench, including: a front support frame, a middle support frame and a rear support frame. The front support frame, the middle support frame and the rear support frame are connected in sequence to realize the construction of the overall framework of the test bench and the support of the test bench for parts. The front support frame realizes the layered arrangement of many electrical components at the front of the vehicle system by setting multiple front support layers. The rear support frame realizes the layered arrangement of many components at the rear of the vehicle system by setting at least one rear support layer, avoiding the stacking of multiple components and facilitating the operation of each electrical component and component. By setting connecting holes, it is convenient to connect electrical components, parts and components to the connecting holes through connectors, which is convenient for the installation and fixation of each component. By setting a wiring harness mounting hole on at least one side of the support layer, the wiring harnesses all pass through the wiring harness mounting holes at the side of the support layer to avoid messy crossing of the wiring harnesses. However, when the test bench is used, it can only be applied to one type of vehicle. When the wiring harnesses of different models are tested, the test bench of the corresponding size and shape needs to be remade, resulting in waste of materials and affecting the test efficiency. In addition, after the test is completed, the test bench occupies a large space and is inconvenient to store. Utility Model Content

[0004] The utility model provides a multifunctional test bench for low-voltage wiring harness DV of a complete vehicle for laboratory use, which solves the problem of insufficient applicability of the test bench in the prior art.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A multifunctional vehicle low-voltage wiring harness DV test bench for laboratory use includes a body frame, which includes a plurality of frame telescopic rods with adjustable lengths, and a conductive sheet is provided on the body frame. The telescopic rods can expand and deform the body frame, thereby changing the various forms of the test bench, so that the test bench can be suitable for vehicles of different sizes, thereby enhancing the applicability of the test bench; the conductive sheet can achieve efficient electrical connection, meeting the electrical circuit connection requirements during DV testing.

[0007] The frame telescopic rod comprises two supporting rods which are opposite to each other end to end, and the two supporting rods are connected by an extension rod. By changing the relative position of the extension rod and the two supporting rods, the length of the frame telescopic rod can be adjusted.

[0008] The support rod is provided with a first conductive sheet, the extension rod is provided with a second conductive sheet, and the first conductive sheet is connected to the second conductive sheet. The first conductive sheet and the second conductive sheet can improve the conductivity of the vehicle body frame and achieve good electrical connection characteristics, especially excellent wiring harness grounding performance.

[0009] The cross section of the support rod is an I-shaped structure, and a plurality of docking holes arranged along the axis direction of the support rod are provided on the web of the I-shaped structure, and a docking joint is provided on the extension rod, and the docking joint is plugged into the docking holes. The docking joint is plugged into docking holes at different positions, so that the support rod and the extension rod are in different relative positions, and at the same time, the wing plate of the I-shaped structure limits the extension rod to prevent the extension rod from rotating around the center of the docking joint, thereby ensuring the relative position stability of the support rod and the extension rod.

[0010] The first conductive sheet is fitted with the web of the I-shaped structure, and a first through hole is provided on the first conductive sheet, and the first through hole corresponds to the position of the docking hole on the support rod, so as to facilitate the subsequent assembly of the support rod and the extension rod.

[0011] The second conductive sheet is fitted with the extension rod, and a second through hole is provided on the second conductive sheet, and the second through hole corresponds to the position of the docking head on the extension rod. The docking head passes through the second through hole and the first through hole and is connected to the docking hole to realize the installation of the conductive sheet and ensure the stable installation of the conductive sheet.

[0012] The body frame is provided with a mesh, which is clamped with the support rod. The mesh is a stainless steel mesh with a thickness of 1 mm, a punching diameter of 10 mm, and a center distance of 55 mm between two adjacent holes, which is consistent with the standard, is convenient for punching holes on the profile, reduces the weight of the frame, and is convenient for the installation and fixation of connector staples, cable ties, and buckles.

[0013] The outer side of the wing plate of the I-shaped structure is provided with a connecting groove, and the mesh is clamped in the connecting groove. The edge of the mesh is clamped in the connecting groove, which is convenient for disassembly and assembly. The ends of the two adjacent frame telescopic rods are connected by a latch.

[0014] The bottom of the vehicle body frame is provided with movable casters, which facilitates the movement of the vehicle body frame, and a single person can realize the movement and displacement in a flat area.

[0015] The beneficial effects of the utility model are as follows: the telescopic rod of the frame can be extended and retracted to expand and deform the vehicle body frame, thereby changing the various forms of the test bench, so that the test bench can be suitable for vehicle models of different sizes, thereby enhancing the applicability of the test bench; the conductive sheet can achieve efficient electrical connection, meeting the electrical circuit connection requirements during DV testing.

[0016] The test bench can be expanded and deformed by changing the relative position of the extension rod on the support rod. Through the layout and application of the extension rod, the position of the extension rod and the supporting rod matching hole can be adjusted to change the various forms of the test bench to meet the wiring harness DV test requirements of vehicles of different sizes.

[0017] The overall frame has a good appearance, excellent overall performance, and the conductive performance can meet the requirements of vehicle testing. It can meet the requirements of vehicle function testing and wiring harness bench construction, is easy to assemble, easy to use, highly reusable, and has a reliable lifespan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a multifunctional laboratory test bench for low-voltage wiring harness DV of a complete vehicle;

[0020] Figure 2 is a schematic diagram of the support rod structure;

[0021] Figure 3 for Figure 2 Sectional view at AA;

[0022] Figure 4 is a schematic diagram of the extension rod structure;

[0023] Figure 5 Schematic diagram of the body frame assembly.

[0024] In the figure: 1. vehicle body frame, 2. frame telescopic rod, 3. support rod, 31. docking hole, 32. connecting groove, 4. extension rod, 41. docking joint, 51. first conductive sheet, 52. second conductive sheet, 6. mesh sheet. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1, as Figure 1 As shown, a multifunctional laboratory vehicle low-voltage wiring harness DV test bench includes a body frame 1, the body frame 1 includes a plurality of frame telescopic rods 2 with adjustable lengths, and a conductive sheet is provided on the body frame 1. The test bench meets the function verification, electrical performance test, and selection verification of the wiring harness components of the whole vehicle, and provides assistance and support for the development of the whole vehicle. The test bench is used for the network communication test system of complex and multi-loop cable harnesses, and performs wiring harness cable tests on various types of wiring harnesses. It can detect the conduction, short circuit, open circuit, pin misalignment, poor connection, CAN communication and Lin communication of the automobile wiring harness; it can quickly and accurately detect the functional verification of the automobile wiring harness, and can adjust the body frame 1 by controlling the telescopic rod of the frame to telescope according to the actual situation, change the various forms of the test bench, and meet the needs of different users. In addition, the test bench also has stable and reliable performance, low cost of use, simple operation, and high reliability, and is an ideal choice for automobile wiring harness detection; the conductive sheet can achieve efficient electrical connection and meet the electrical circuit connection requirements during DV testing.

[0027] In addition, in the present embodiment, the vehicle body frame 1 is made of aluminum alloy, which has a clean and bright appearance; it has anti-corrosion properties and is not easy to rust; it has wear-resistant properties, and slight scratches will not cause obvious damage to it and will not affect its performance.

[0028] Furthermore, the frame telescopic rod 2 includes two supporting rods 3 which are opposite to each other end to end, and the two supporting rods 3 are connected by an extension rod 4. By changing the relative position of the extension rod 4 and the two supporting rods 3, the length of the frame telescopic rod 2 can be adjusted. Figure 5 As shown, the support rod 3 is provided with a first conductive sheet 51, the extension rod 4 is provided with a second conductive sheet 52, and the first conductive sheet 51 is connected to the second conductive sheet 52. The first conductive sheet 51 and the second conductive sheet 52 can improve the conductivity of the vehicle body frame 1, and can achieve good electrical connection characteristics, especially achieve excellent wiring harness grounding performance.

[0029] Example 2, based on Example 1, a laboratory multifunctional vehicle low-voltage wiring harness DV test bench, such as Figure 2 , Figure 4As shown, the cross section of the support rod 3 is an I-shaped structure, and the I-shaped structure is used to bear the weight of the overall frame, while the groove structure can reduce the weight of the structure. A plurality of docking holes 31 arranged along the axial direction of the support rod 3 are provided on the web of the I-shaped structure, and a docking joint 41 is provided on the extension rod 4, and the docking joint 41 is plugged into the docking holes 31. The docking joint 41 is plugged into the docking holes 31 at different positions, so that the support rod 3 and the extension rod 4 are in different relative positions, and at the same time, the wing plate of the I-shaped structure limits the extension rod 4 to prevent the extension rod 4 from rotating around the center of the docking joint 41, thereby ensuring the relative position stability of the support rod 3 and the extension rod 4.

[0030] Further, the first conductive sheet 51 is fitted with the web of the I-shaped structure, and a first through hole is provided on the first conductive sheet 51, and the first through hole corresponds to the position of the docking hole on the support rod 3. The second conductive sheet 52 is fitted with the extension rod 4, and a second through hole is provided on the second conductive sheet 52, and the second through hole corresponds to the position of the docking head 41 on the extension rod 4. In this embodiment, the first conductive sheet 51 and the second conductive sheet 52 are conductive copper sheets, and the conductive copper sheets have high conductivity, which can meet the requirements of electrical circuit connection during DV testing, improve the conductive performance of the frame structure, and achieve good electrical connection characteristics, especially excellent wiring harness grounding performance; the docking head 41 passes through the second through hole and the first through hole and is connected to the docking hole 31. After the support rod 3 and the extension rod 4 are connected, the first conductive sheet 51 and the second conductive sheet 52 are tightly fitted to achieve the connection of the conductive sheets, ensure the overall conductive performance of the vehicle body frame 1, and ensure that the conductive sheets are installed stably.

[0031] Furthermore, a mesh 6 is provided on the vehicle body frame 1, and the mesh 6 is clamped with the support rod 3. Figure 3 As shown, a connection groove 32 is provided on the outer side of the wing plate of the I-shaped structure, and the mesh 6 is clamped with the connection groove 32. The connection groove clamps the mesh 6 to avoid using bolts to fix the mesh 6, and the mesh 6 is easy to install and disassemble. The thickness of each mesh 6 is 1mm, the diameter of the hole is 10mm, and the center distance between two adjacent holes is 55mm, which is consistent with the standard, which is convenient for punching holes on the profile, reducing the weight of the frame, and facilitating the installation and fixation of connector staples, cable ties, and buckles. At the same time, it is convenient to fix the grounding terminal on the frame, and only bolts are needed for fastening, which is convenient for installation and disassembly.

[0032] Furthermore, the ends of two adjacent telescopic rods 2 are connected by a latch, which facilitates the overall connection of the vehicle body frame 1 and facilitates assembly. A movable caster is installed at the bottom of the vehicle body frame 1. It is convenient for the vehicle body frame 1 to move, and a single person can realize the movement and displacement in a flat area.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional laboratory vehicle low-voltage wiring harness DV test bench, comprising a vehicle body frame (1), characterized in that: The vehicle body frame (1) comprises a plurality of frame telescopic rods (2) with adjustable lengths, and a conductive sheet is provided on the vehicle body frame (1).

2. The multifunctional laboratory vehicle low-voltage wiring harness DV test bench according to claim 1 is characterized in that: The frame telescopic rod (2) comprises two supporting rods (3) which are opposite each other end to end, and the two supporting rods (3) are connected by an extension rod (4).

3. The multifunctional laboratory vehicle low-voltage wiring harness DV test bench according to claim 2 is characterized in that: A first conductive sheet (51) is provided on the support rod (3), a second conductive sheet (52) is provided on the extension rod (4), and the first conductive sheet (51) is connected to the second conductive sheet (52).

4. The multifunctional laboratory vehicle low-voltage wiring harness DV test bench according to claim 3 is characterized in that: The cross section of the support rod (3) is an I-shaped structure, a plurality of docking holes (31) arranged along the axis direction of the support rod (3) are provided on the web of the I-shaped structure, and a docking joint (41) is provided on the extension rod (4), and the docking joint (41) is plugged into the docking hole (31).

5. The multifunctional laboratory vehicle low-voltage wiring harness DV test bench according to claim 4 is characterized in that: The first conductive sheet (51) is fitted with the web of the I-shaped structure, and a first through hole is provided on the first conductive sheet (51), the first through hole corresponding to the position of the docking hole on the support rod (3).

6. The multifunctional laboratory vehicle low-voltage wiring harness DV test bench according to claim 4 is characterized in that: The second conductive sheet (52) is fitted with the extension rod (4); a second through hole is provided on the second conductive sheet (52); the second through hole corresponds to the position of the docking head (41) on the extension rod (4).

7. The multifunctional laboratory vehicle low-voltage wiring harness DV test bench according to any one of claims 2 to 6, characterized in that: A mesh sheet (6) is provided on the vehicle body frame (1), and the mesh sheet (6) is clamped to the support rod (3).

8. The multifunctional laboratory vehicle low-voltage wiring harness DV test bench according to claim 7 is characterized in that: A connecting groove (32) is provided on the outer side of the wing plate of the I-shaped structure, and the mesh sheet (6) is snap-connected to the connecting groove (32).

9. The multifunctional laboratory vehicle low-voltage wiring harness DV test bench according to claim 1 or 8, characterized in that: The ends of two adjacent frame telescopic rods (2) are connected via a latch.

10. The multifunctional laboratory vehicle low-voltage wiring harness DV test bench according to claim 9, characterized in that: The bottom of the vehicle body frame (1) is provided with movable casters.

Images