Vehicle door sinking checking method

Abstract

The invention belongs to the technical field of automobile checking methods, and particularly relates to an automobile door sinking checking method. Translating the hinge axis L1 of the vehicle door towards the outside of the vehicle by a distance of D1 to obtain a hinge axis L2 under the limit deviation; rotating the vehicle door assembly towards the outside of the vehicle around a limit deviation lower hinge axis L2, rotating a door lock meshing point P1 to a separation point P2, clockwise rotating the vehicle door assembly around a central point P4 of an upper hinge and a lower hinge, rotating an upper angular point P5 of the vehicle door assembly to a point P6, translating the vehicle door assembly downwards to enable the point P6 to move to a point P7, translating the vehicle door assembly backwards to enable the point P7 to move to a point P8; the position is the final state of the vehicle door sinking; respectively measuring a gap between the vehicle door assembly and each peripheral part at the moment, wherein the gap between the vehicle door assembly and each part is required to be greater than or equal to 0.3 mm; the method is applied to a data production stage, can be completed without a structure engineer with finite element analysis capability, and is high in efficiency and short in period.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile calibration methods, and in particular relates to a calibration method for vehicle door sinking. Background Art

[0002] Modern cars are updated and iterated quickly, with short development cycles and low fault tolerance. The current door sinking verification can only be achieved through finite element analysis, which requires professional technicians who have mastered CAE analysis. General structural engineers are not competent for this task. In addition, the finite element analysis project node is late and the cycle is long, which generally takes 1 month. Once it is found that the door sinking does not meet the requirements, the adjustment workload is large and may also damage the shape.

[0003] In summary, the existing door sinking verification method is highly professional and inefficient, and once the verification is inaccurate, it will seriously affect the subsequent work. Summary of the invention

[0004] In order to overcome the above problems, the present invention provides a method for checking the sinking of a vehicle door. The method is applied in the data production stage and can be completed without the need for a structural engineer with finite element analysis capabilities. It has high efficiency and a short cycle.

[0005] A method for checking the sinking of a vehicle door, comprising the following contents:

[0006] Step 1, translate the door hinge axis L1 toward the outside of the vehicle by a distance D1 to obtain the hinge axis L2 under the limit deviation;

[0007] Step 2, rotating the door assembly outward around the hinge axis L2 under the limit deviation, rotating the door lock engagement point P1 to the separation point P2, so that the distance between the door lock engagement point P1 and the separation point P2 is D2;

[0008] Step 3, rotate the door assembly clockwise around the upper and lower hinge center points P4, and rotate the upper corner point P5 of the door assembly to point P6, so that the distance between the upper corner points P5 and P6 of the door assembly reaches 3 mm;

[0009] Step 4, translate the door assembly downward so that point P6 moves to point P7, and the translation amount is the Z-axis assembly tolerance D4;

[0010] Step 5, translate the door assembly backward so that point P7 moves to point P8. The translation amount is the X-axis assembly tolerance D5. This position is the final state of the door sinking.

[0011] Step 6: Measure the gap between the door assembly and each surrounding part. The gap between each part must be ≥ 0.3mm.

[0012] In step 1, D1=2 mm.

[0013] In step 2, D2=21.5 mm.

[0014] In the step 4, D4=1 mm.

[0015] In step 5, D5=1 mm.

[0016] Beneficial effects of the present invention:

[0017] The verification method of the present invention is based on a large amount of test and measurement data, and feeds back the actual working conditions into the verification process and parameters, so that structural engineers can verify the door sinking in the early data production stage, determine the maximum door sinking position based on the test data and the actual working conditions, and determine the door sinking amount based on the test data and the installation tolerance; finally, based on the door sinking position and sinking amount, verify whether the door and surrounding parts meet the design requirements; generally, it only takes 1 hour to complete the door sinking verification, which not only greatly improves work efficiency, but also can find and correct problems in advance, reduce workload, and maintain the shape to the maximum extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings used in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the door hinge axis L1 and the door lock engagement point of the present invention.

[0020] Figure 2 This is a schematic diagram of step 2 of the present invention.

[0021] Figure 3 This is a schematic diagram of the principle of determining point P2 in step 2 of the present invention.

[0022] Figure 4 This is a schematic diagram of step 3 of the present invention.

[0023] Figure 5 This is a schematic diagram of step 4 of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0025] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0028] Example 1

[0029] A method for checking the sinking of a vehicle door, comprising the following contents:

[0030] Step 1, translate the door hinge axis L1 toward the outside of the vehicle by a distance D1 to obtain the hinge axis L2 under the limit deviation;

[0031] Step 2, rotating the door assembly toward the outside of the vehicle around the lower limit deviation hinge axis L2, rotating the door lock engagement point P1 to the separation point P2, so that the distance between the door lock engagement point P1 and the separation point P2 is D2;

[0032] Step 3, rotate the door assembly clockwise around the upper and lower hinge center points P4, and rotate the upper corner point P5 of the door assembly to point P6, so that the distance between the upper corner points P5 and P6 of the door assembly reaches 3 mm;

[0033] Step 4, translate the door assembly downward so that point P6 moves to point P7, and the translation amount is the Z-axis assembly tolerance D4;

[0034] Step 5, translate the door assembly backward so that point P7 moves to point P8. The translation amount is the X-axis assembly tolerance D5. This position is the final state of the door sinking.

[0035] Step 6: Measure the gap between the door assembly and each surrounding part. The gap between each part must be ≥ 0.3mm.

[0036] In step 1, D1=2 mm.

[0037] In step 2, D2=21.5 mm.

[0038] In the step 4, D4=1 mm.

[0039] In step 5, D5=1 mm.

[0040] Example 2

[0041] Input conditions (see Figure 1 ): door hinge axis L1, door lock engagement point P1, door assembly;

[0042] Step 1: Determine the maximum door sinking position (see Figure 2 and Figure 3 ),

[0043] Step 1.1, translate the door hinge axis L1 toward the outside of the vehicle by a distance D1 (preferably D1=2 mm) to obtain the hinge axis L2 under the limit deviation;

[0044] Step 1.2, rotate the door assembly to the outside of the vehicle around the hinge axis L2 under the limit deviation, rotate the door lock engagement point P1 to the separation point P2, the rotation amount (the distance between the door lock engagement point P1 and the separation point P2) is the chord length D2 between P1 and P2 (preferably D2 = 21.5mm), and this position is the maximum door sinking position; the specific reason is that when the lock tongue S1 and the lock pin S3 in the closed state are engaged, the door lock has a supporting effect on the door, only when the door is opened and the lock tongue S1 rotates around the rotation center P3 to the lock tongue S2 at the moment of separation, the lock tongue S2 and the lock pin S4 are separated at point P2, and the door lock completely loses its supporting effect. At this position, the door assembly sinks the most.

[0045] Step 2 Determine the door drop (see Figure 4 and Figure 5 )

[0046] Step 2.1, rotate the door assembly clockwise around the upper and lower hinge center points P4 (in the direction of door sinking), so that the upper corner point P5 of the door assembly rotates to point P6, and the rotation amount is the chord length D3 between P5 and P6 (preferably D3 = 3mm);

[0047] Step 2.2, continue to translate the door assembly downward so that point P6 moves to point P7, and the translation amount is the Z-axis assembly tolerance D4 (preferably D4=1 mm);

[0048] Step 2.3, finally, translate the door assembly backward so that point P7 moves to point P8, and the translation amount is the X-axis assembly tolerance D5 (preferably D5 = 1 mm). This position is the final state of the door sinking;

[0049] Step 3: Check the clearance between the door assembly and the surrounding area

[0050] Measure the gap D between the door assembly and surrounding parts at the maximum door sinking position determined in step 1 and the position determined in 3.3. The gap must meet the design requirements, preferably D ≥ 0.3 mm.

[0051] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the protection scope of the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention. These simple variations all belong to the protection scope of the present invention.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0053] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A method for checking the sinking of a vehicle door, characterized in that: It includes the following: Step 1, translate the door hinge axis L1 toward the outside of the vehicle by a distance D1 to obtain the hinge axis L2 under the limit deviation; Step 2, rotating the door assembly outward around the hinge axis L2 under the limit deviation, rotating the door lock engagement point P1 to the separation point P2, so that the distance between the door lock engagement point P1 and the separation point P2 is D2; Step 3, rotate the door assembly clockwise around the upper and lower hinge center points P4, and rotate the upper corner point P5 of the door assembly to point P6, so that the distance between the upper corner points P5 and P6 of the door assembly reaches 3 mm; Step 4, translate the door assembly downward so that point P6 moves to point P7, and the translation amount is the Z-axis assembly tolerance D4; Step 5, translate the door assembly backward so that point P7 moves to point P8. The translation amount is the X-axis assembly tolerance D5. This position is the final state of the door sinking. Step 6: Measure the gap between the door assembly and each surrounding part. The gap between each part must be ≥ 0.3mm.

2. A door sinking verification method according to claim 1, characterized in that: In step 1, D1=2 mm.

3. A door sinking verification method according to claim 1, characterized in that: In step 2, D2=21.5 mm.

4. A door sinking verification method according to claim 1, characterized in that: In the step 4, D4=1 mm.

5. The door sinking verification method according to claim 1, characterized in that: In step 5, D5=1 mm.

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