A sunshade arrangement method and test device based on multi-factor considerations

Abstract

The present invention discloses a sun visor arrangement method and test device based on multi-factor considerations. The arrangement method includes: first determining the initial value and target value of the upper viewing angle and the sunshade viewing angle, as well as the lower limit of the distance between the sun visor movement trajectory and the head envelope boundary, and then using two methods to adjust and arrange the sun visor respectively, and finally organizing the target population to conduct subjective evaluation of the adjustment results, which can ensure that the driver can have a good upper viewing angle when the sun visor is closed, and can also ensure that the driver can have a good sunshade viewing angle when the sun visor is opened, ensuring driving safety, while avoiding the risk of head collision during the opening or closing of the sun visor. In addition, the above arrangement method can also be corresponded and physically verified based on a physical verification device to ensure that the design goal is achieved in advance.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle accessories, and in particular to a sun visor arrangement method and a test device based on multi-factor considerations. Background Art

[0002] The vehicle sun visor is one of the necessary configurations of the vehicle. In a non-strong light environment, it is in a folded standby state. In a strong light environment, the driver or co-driver rotates the sun visor to block the light incident from the front windshield to the eyes, avoid glare, and ensure driving safety. Therefore, the sunshade function is the main function of the sun visor, but in addition to considering the sunshade effect, the arrangement of the sun visor is also restricted by other factors, such as the gap between the sun visor rotation process and the head, and the effect of the sun visor on the upper viewing angle. It should be noted that the above three factors present a contradictory relationship. For example, the better the sunshade effect, the lower and closer the arrangement position, but at the same time it brings the driver's upper viewing angle. The smaller the gap between the sun visor rotation process and the head, the driver will feel depressed. For example, the upper viewing angle is given priority for arrangement, but the sunshade effect is poor, which poses a hidden danger to driving safety under strong light conditions. Therefore, how to balance the above arrangement contradictions and quickly find the optimal solution is an urgent problem to be solved. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a sun visor arrangement method and test device based on multi-factor considerations. The optimal arrangement position of the sun visor can be solved for different vehicle models, and a set of test devices matching the arrangement method can be constructed to timely adjust to the optimal arrangement position and conduct physical verification and subjective evaluation, so as to reach the optimal arrangement plan of the sun visor in advance.

[0004] In order to solve the above technical problems, the present invention is implemented by the following technical solutions:

[0005] In a first aspect, the present invention provides a sunshade arrangement method based on multi-factor considerations, comprising the following steps:

[0006] S1. Based on the initial state and ideal target of the test vehicle model, determine the initial and target values ​​of the upper viewing angle and the sunshade viewing angle, as well as the lower limit of the distance between the sun visor movement trajectory and the head envelope boundary;

[0007] Use any of the following adjustment methods to arrange the sun visor of the test vehicle model;

[0008] Adjustment method 1 includes:

[0009] S2-1, adjust the upper viewing angle to the target value and lock it;

[0010] S3-1, move the sun visor along the upper viewing angle boundary line toward the driver. If the sun visor viewing angle target value is reached before the lower limit of the distance between the sun visor movement trajectory and the head envelope boundary is reached, the adjustment is completed, otherwise proceed to the next step;

[0011] S4-1, replace the sun visor with a larger rotation radius, and repeat steps S2-1 and S3-1 until the adjustment is completed;

[0012] Adjustment method 2 includes:

[0013] S2-2, adjust the sunshade viewing angle to the target value and lock it;

[0014] S3-2, move the sun visor along the sun visor angle boundary line toward the driver. If the upper angle target value is reached before the lower limit of the distance between the sun visor movement trajectory and the head envelope boundary is reached, the adjustment is completed, otherwise proceed to the next step;

[0015] S4-2, replace the sun visor with a larger rotation radius, and repeat steps S2-2 and S3-2 until the adjustment is completed.

[0016] Preferably, it is also necessary to organize the target population to verify and analyze the adjustment results of adjustment method 1 or adjustment method 2. If formula (1) is established, the adjustment result can be determined to be qualified:

[0017] Aa+Bb+Cc≥D (1)

[0018] Wherein: A is the number of people in the target population whose upper viewing angle meets the requirement, B is the number of people in the target population whose sunshade viewing angle meets the requirement, C is the number of people in the target population whose motion trajectory meets the required distance from the head envelope boundary; a is the weight coefficient of A, b is the weight coefficient of B, c is the weight coefficient of C, a+b+c=1; D is the set number of people, which is less than the number of the target population.

[0019] Further preferably, if formula (1) is not valid, A is compared with the first threshold, and B is compared with the second threshold, respectively. The first threshold and the second threshold are both set numbers of people, and are both smaller than the number of the target population. Readjustment is performed based on the comparison results:

[0020] Result 1: When A and B reach the first threshold and the second threshold respectively, the adjustment result can be judged as qualified.

[0021] Result 2: When neither A nor B reaches the first threshold value and the second threshold value, the upper viewing angle is increased, and steps S3-1 and S4-1 are returned and executed to organize the target population to re-evaluate;

[0022] Result 3: When only A does not reach the first threshold, the upper viewing angle is increased while keeping the shading viewing angle unchanged, and the target population is organized to re-evaluate until formula (1) is established or A reaches the first threshold;

[0023] Result 4: When only B fails to reach the second threshold, the shading angle is reduced while keeping the upper angle unchanged, and the target population is organized to re-evaluate until formula (1) is established or B reaches the second threshold.

[0024] Further preferably, the weight coefficients a, b and c need to satisfy a<b<c.

[0025] Still further preferably, the first threshold value needs to be greater than the second threshold value.

[0026] Still more preferably, the method of increasing the upper viewing angle is to adjust by increasing it by 0.5-1° each time.

[0027] Still more preferably, the method of reducing the sunshade viewing angle is to adjust by reducing it by 0.5-1° each time.

[0028] In a second aspect, the present invention provides a test device, which is used to implement the sun visor arrangement method in the above technical solution, and comprises:

[0029] Test bench;

[0030] An adjustable seat, which is set on the test bench;

[0031] A height adjustment assembly, which is disposed on the test bench and located in front of the adjustable seat and can move up and down relative to the test bench;

[0032] A length and angle adjustment component, which is disposed on the height adjustment component and moves synchronously therewith, can rotate relative to the height adjustment component and can freely extend and retract along a set direction; and

[0033] The sun visor is arranged near the end of the length and angle adjustment component of the adjustable seat. The moving direction of the sun visor can be adjusted by the adjustment function of the length and angle adjustment component and can move along the set direction.

[0034] Preferably, the height adjustment assembly includes a first slide groove fixed on the test bench, a first slide rod slidably connected to the first slide groove and arranged vertically, and a first locking structure for limiting the sliding of the first slide rod, and the first slide rod can slide along the first slide groove relative to the test bench.

[0035] Preferably, the length and angle adjustment assembly includes a second slide groove hinged on the lower end of the first slide rod, a second slide rod slidably connected to the second slide groove, and a second locking structure for limiting the sliding of the second slide rod. The end of the second slide rod close to the human body is fixedly connected to the sun visor through a U-shaped bracket.

[0036] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0037] The present invention can quickly achieve the optimal adjustment of the sun visor arrangement through the sun visor arrangement method and test device, and achieve the optimal solution selection of the upper viewing angle, sun visor viewing angle, distance between the sun visor movement trajectory and the head envelope boundary, and the size of the sun visor itself, which can ensure that the driver can have a good upper viewing angle when the sun visor is closed, and can also ensure that the driver can have a good sun visor viewing angle when the sun visor is opened, ensuring driving safety, while avoiding the risk of head collision during the opening or closing of the sun visor. In addition, the target population can also be organized to verify and analyze the results of the above arrangement method to ensure that the design goals meet the design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram showing the relevant field of view and space when arranging sunshades.

[0039] Figure 2 The schematic diagram of the experimental device.

[0040] Figure 3 A schematic diagram of the detailed structure of the experimental device.

[0041] In the figure, 1-upper eye point, 2-lower eye point, 3-head envelope boundary, 4-initial position of sun visor, 5-vertical position of sun visor, 6-movement trajectory of sun visor, 10-adjustable seat, 11-97.5% human body sitting comfort line, 12-95% human body sitting comfort line, 13-92.5% human body sitting comfort line, 14-50% human body sitting comfort line, 15-7.5% human body sitting comfort line, 16-5% human body sitting comfort line, 17-2.5% human body sitting comfort line Fit line, 18-height adjustment component, 19-angle and length adjustment component, 20-first slide groove, 21-first slide rod, 22-second slide groove, 23-second slide rod, 24-U-shaped bracket, 100-distance between the movement trajectory of the sun visor and the boundary of the head envelope, 101-upper viewing angle, 102-sunshade viewing angle, 103-upper viewing angle boundary line, 104-sunshade viewing angle boundary line, 200-first axis, 201-second axis, 202-third axis, 203-fourth axis. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and cannot be understood as limitations on this patent. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. All other embodiments obtained based on the embodiments in the present invention are within the scope of protection of the present invention. However, they are not used as a basis for limiting the present invention.

[0043] See also Figure 1 , is a schematic diagram of the relevant visual field and space when the sun visor is arranged. The driver's upper eye point 1 and lower eye point 2 (defined in GB11562-2014) can represent the upper and lower limits of the eye points. When the sun visor is in a closed state, the driver's upper viewing angle 101 can be made based on the upper eye point 1; when the sun visor is in an open state, the sun visor viewing angle 102 of the driver can be made based on the lower eye point 2; at the same time, during the rotation of the sun visor, the lower limit value of the distance 100 between the sun visor movement trajectory and the head envelope boundary is also involved.

[0044] During the design process, when arranging the sun visor, the following factors should be considered: when the sun visor is in the closed state, the sun visor cannot be too low and cannot affect the driver's upper viewing angle. In other words, considering only the factor of the upper viewing angle, the driver hopes that the upper viewing angle 101 is as large as possible; when the sun visor is in the open state, it cannot be too high, otherwise it will not have a sunshade effect and affect driving safety. In other words, considering only the factor of the sunshade effect, the driver hopes that the sunshade viewing angle 102 is as small as possible; and the above two demands are contradictory to the arrangement of the sun visor. At the same time, the movement trajectory of the sun visor and the head envelope distance 100 are also factors that need to be considered. The lower limit value needs to be set to prevent the risk of head collision or depression during the rotation process. In addition, the size of the sun visor itself will also affect the arrangement effect. The above four main factors jointly determine the arrangement result of the sun visor.

[0045] The present invention provides an optimal method for arranging sunshades based on the above-mentioned multiple factors, comprising the following steps:

[0046] S1. Based on the initial state and ideal target of the test vehicle model, determine the initial and target values ​​of the upper viewing angle and sunshade viewing angle, as well as the lower limit of the distance between the visor movement trajectory and the head envelope boundary; the initial value is the initial state of a certain development vehicle model, which is determined by a combination of factors such as vehicle type, human-machine hard points, styling characteristics, and inherited parts, and each vehicle is basically different; the target value is a better experience for competing vehicle models, or a better state considered by design experience, which is an ideal target.

[0047] Use any of the following adjustment methods to arrange the sun visor of the test vehicle model;

[0048] If the vehicle model has the priority to achieve the upper viewing angle 101, the first adjustment method includes:

[0049] S2-1, adjust the upper viewing angle to the target value and lock it;

[0050] S3-1, move the sun visor along the upper viewing angle boundary line toward the driver. If the sun visor viewing angle target value is reached before the lower limit of the distance between the sun visor movement trajectory and the head envelope boundary is reached, the adjustment is completed, otherwise proceed to the next step;

[0051] S4-1, replace the sun visor with a larger rotation radius, and repeat steps S2-1 and S3-1 until the adjustment is completed;

[0052] If the vehicle model has the priority to achieve the sunshade viewing angle 102, the second adjustment method includes:

[0053] S2-2, adjust the sunshade viewing angle to the target value and lock it;

[0054] S3-2, move the sun visor along the sun visor angle boundary line toward the driver. If the upper angle target value is reached before the lower limit of the distance between the sun visor movement trajectory and the head envelope boundary is reached, the adjustment is completed, otherwise proceed to the next step;

[0055] S4-2, replace the sun visor with a larger rotation radius, and repeat steps S2-2 and S3-2 until the adjustment is completed.

[0056] After completing the above adjustment method 1 or 2, it is necessary to verify and analyze the adjustment results:

[0057] If formula (1) holds true, the adjustment result can be judged to be qualified:

[0058] Aa+Bb+Cc≥D (1)

[0059] In the formula: A is the number of people in the target population whose upper viewing angle meets the requirement, B is the number of people in the target population whose sunshade viewing angle meets the requirement, and C is the number of people in the target population whose motion trajectory meets the head envelope boundary distance; a is the weight coefficient of A, b is the weight coefficient of B, and c is the weight coefficient of C, a+b+c=1; D is the set number of people, which is less than the number of target people. Among them, the set number D is the number of people who meet the set percentile target population. It should be noted that the set percentile can be 50% or 60%, which is not specifically limited here. The weight coefficients a, b and c need to satisfy a<b<c.

[0060] If formula (1) is not valid (in this case, only the upper viewing angle and the sunshade viewing angle need to be considered, and the upper viewing angle has a higher priority than the sunshade viewing angle), compare A with the first threshold, B with the second threshold, and readjust according to the comparison results:

[0061] Result 1: When A and B reach the first threshold and the second threshold respectively, the adjustment result can be judged as qualified.

[0062] Result 2: When neither A nor B reaches the first threshold value and the second threshold value, the upper viewing angle is increased, and steps S3-1 and S4-1 are returned and executed to organize the target population to re-evaluate;

[0063] Result 3: When only A does not reach the first threshold, the upper viewing angle is increased (by increasing by 0.5° or 1° each time) while keeping the sunshade viewing angle unchanged, and the target population is organized to re-evaluate until formula (1) is established or A reaches the first threshold;

[0064] Result 4: When only B does not reach the second threshold, the shading angle is reduced (by 0.5° or 1° at a time) while keeping the upper angle unchanged, and the target population is organized to re-evaluate until formula (1) is established or B reaches the second threshold.

[0065] The first threshold and the second threshold are both the number of people who meet the set percentile target, and the set percentile is not specifically limited. For security reasons, the first threshold must be greater than the second threshold.

[0066] See also Figure 2 , based on the above arrangement method, a schematic diagram of a verification device that matches and adjusts quickly therewith. The adjustable seat 10 is installed on the test bench and can be adjusted forward and backward, up and down. According to the theoretical formula calculation or the collection of multiple actual human body sitting positions, the comfortable sitting lines of multiple percentile human bodies can be obtained, such as the 97.5% human body sitting comfort line 11, the 95% human body sitting comfort line 12, the 92.5% human body sitting comfort line 13, the 50% human body sitting comfort line 14, the 7.5% human body sitting comfort line 15, the 5% human body sitting comfort line 16, and the 2.5% human body sitting comfort line 17. Further, it can be further subdivided according to human needs. The height adjustment component 18 is fixed on the test bench and realizes the up and down adjustment of the entire test device. The angle and length adjustment component 19 is used to realize angle adjustment, matching the upper boundary line of the upper viewing angle 101 or the upper boundary line of the sunshade viewing angle 102, and realizing front and back adjustment along the above boundary line.

[0067] See also Figure 3, a schematic diagram of the structure of the sun visor adjustment device. Specifically, the height adjustment component 18 is composed of a first slide 20, a first slide bar 21 and a first locking structure, wherein the first slide 20 is fixed on the test bench to realize the overall installation of the test device, and the first slide 20 and the first slide bar 21 match and can realize relative sliding (along the first axis 200) and locking. The angle and length adjustment component 19 is composed of a second slide 22, a second slide bar 23 and a second locking structure, which can realize relative sliding (along the third axis 202) and locking. In addition, the lower end of the first slide bar 21 is hinged to the front end of the second slide 22 to realize angle adjustment (along the second axis 201) and locking. The front end of the U-shaped bracket 24 is fixedly connected to the second slide bar 23, and two U-shaped notches are set at the rear end thereof, which can be clamped to the existing sun visor, so as to realize the simulated installation, rotation adjustment (along the fourth axis 203) and quick replacement of the sun visor on the vehicle body.

[0068] The first locking structure, the second locking structure and the locking structure at the hinge between the lower end of the first slide bar 21 and the front end of the second slide slot 22 can all be selected in a conventional manner, such as an interference fit of a rotating mechanism or fastening by bolts.

[0069] It is important to point out that Figure 2 and Figure 3 The sun visor adjustment device and Figure 2 The sun visor arrangement method is completely mapped and corresponding. After theoretical adjustment based on the sun visor arrangement method, corresponding adjustment can be made on the physical adjustment device, and different percentile target groups can be organized to conduct subjective evaluation. Figure 1 The sun visor arrangement optimization result is verified or corrected.

[0070] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A sunshade arrangement method based on multi-factor considerations, characterized in that: The steps include: S1. Based on the initial state and ideal target of the test vehicle model, determine the initial and target values ​​of the upper viewing angle and the sunshade viewing angle, as well as the lower limit of the distance between the sun visor movement trajectory and the head envelope boundary; Use any of the following adjustment methods to arrange the sun visor of the test vehicle model; Adjustment method 1 includes: S2-1, adjust the upper viewing angle to the target value and lock it; S3-1, move the sun visor along the upper viewing angle boundary line toward the driver. If the sun visor viewing angle target value is reached before the lower limit of the distance between the sun visor movement trajectory and the head envelope boundary is reached, the adjustment is completed, otherwise proceed to the next step; S4-1, replace the sun visor with a larger rotation radius, and repeat steps S2-1 and S3-1 until the adjustment is completed; Adjustment method 2 includes: S2-2, adjust the sunshade viewing angle to the target value and lock it; S3-2, move the sun visor along the sun visor angle boundary line toward the driver. If the upper angle target value is reached before the lower limit of the distance between the sun visor movement trajectory and the head envelope boundary is reached, the adjustment is completed, otherwise proceed to the next step; S4-2, replace the sun visor with a larger rotation radius, and repeat steps S2-2 and S3-2 until the adjustment is completed; It is also necessary to organize the target population to verify and analyze the adjustment results of adjustment method 1 or adjustment method 2. If formula (1) is established, the adjustment result can be judged to be qualified: Aa+Bb+Cc≥D (1) Wherein: A is the number of people in the target population whose upper viewing angle meets the requirement, B is the number of people in the target population whose sunshade viewing angle meets the requirement, and C is the number of people in the target population whose motion trajectory meets the head envelope boundary distance; a is the weight coefficient of A, b is the weight coefficient of B, c is the weight coefficient of C, and a+b+c=1; D is the set number of people, which is less than the number of target people; the weight coefficients a, b and c need to satisfy a<b<c.

2. The sunshade arrangement method based on multi-factor considerations according to claim 1 is characterized in that: If formula (1) is not true, compare A with the first threshold, B with the second threshold, respectively. The first threshold and the second threshold are both the set number of people, and both are smaller than the number of the target population. Readjust according to the comparison results: Result 1: When A and B reach the first threshold and the second threshold respectively, the adjustment result can be judged as qualified. Result 2: When neither A nor B reaches the first threshold value and the second threshold value, the upper viewing angle is increased, and steps S3-1 and S4-1 are returned and executed to organize the target population to re-evaluate; Result 3: When only A does not reach the first threshold, the upper viewing angle is increased while keeping the shading viewing angle unchanged, and the target population is organized to re-evaluate until formula (1) is established or A reaches the first threshold; Result 4: When only B fails to reach the second threshold, the shading angle is reduced while keeping the upper angle unchanged, and the target population is organized to re-evaluate until formula (1) is established or B reaches the second threshold.

3. The sunshade arrangement method based on multi-factor considerations according to claim 2 is characterized in that: The first threshold must be greater than the second threshold.

4. The sunshade arrangement method based on multi-factor considerations according to claim 2 is characterized in that: The method to increase the upper viewing angle is to adjust it by increasing it by 0.5-1° each time.

5. The sunshade arrangement method based on multi-factor considerations according to claim 2, characterized in that: The method to reduce the shading viewing angle is to adjust it by reducing it by 0.5-1° each time.

6. A test device, characterized in that: The test device is used to implement the sun visor arrangement method according to claim 1, and comprises: Test bench; An adjustable seat, which is set on the test bench; A height adjustment assembly, which is disposed on the test bench and located in front of the adjustable seat and can move up and down relative to the test bench; A length and angle adjustment component, which is disposed on the height adjustment component and moves synchronously therewith, can rotate relative to the height adjustment component and can freely extend and retract along a set direction; and The sun visor is arranged near the end of the length and angle adjustment component of the adjustable seat. The moving direction of the sun visor can be adjusted by the adjustment function of the length and angle adjustment component and can move along the set direction.

7. The test device according to claim 6, characterized in that The height adjustment assembly includes a first slide groove fixed on the test bench, a first slide rod slidably connected to the first slide groove and arranged vertically, and a first locking structure for limiting the sliding of the first slide rod. The first slide rod can slide down relative to the test bench along the first slide groove.

8. The test device according to claim 6, characterized in that: The length and angle adjustment assembly includes a second slide groove hinged on the lower end of the first slide rod, a second slide rod slidably connected to the second slide groove, and a second locking structure for limiting the sliding of the second slide rod. The end of the second slide rod close to the human body is fixedly connected to the sun visor through a U-shaped bracket.

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