An anti-interference luggage seal strip, a vehicle and a seal strip parameter design method

Abstract

The present invention relates to the technical field of rear door sealing, and particularly relates to an anti-interference trunk sealing strip, a vehicle and a sealing strip parameter design method. The anti-interference trunk sealing strip includes: a clamping portion, a foam tube and a plug tube. The clamping portion is used for clamping on the body flange; the foam tube is connected to the clamping portion; a plug tube with a set length is arranged at a set position inside the foam tube and is used for supporting the foam tube. The sealing strip parameter design method includes the following steps: determining the interference range between the trunk lid and the body flange according to the passing angle of the trunk lid; determining the set length of the plug tube according to the interference range between the trunk lid and the body flange; judging whether the reaction force of the sealing strip with the plug tube arranged inside the foam tube meets the requirement of the set trunk lock point sealing reaction force, and if not, adjusting the compression load of the foam tube and / or the plug tube until the requirement is met. It can solve the problem that there is abnormal noise generated by the collision between the tail door and the side wall during driving in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of rear door sealing, and particularly relates to an anti-interference trunk sealing strip, a vehicle, and a sealing strip parameter design method. Background Art

[0002] When the trunk lid is in the closed state, it is mainly supported and sealed by the trunk sealing strip (to keep it stable within the door opening range).

[0003] However, when the trunk lid is closed dynamically or during driving on bumpy roads, it may rub the paint with the side panel metal, resulting in rusting of the sheet metal and other phenomena. In the existing technical solutions, the trunk sealing strip is a sealing strip with a circumferential equal cross-section. This technical solution can solve the problem of sheet metal leakage, but there is still a problem of abnormal noise generated by the collision between the tailgate and the side panel during driving. Summary of the Invention

[0004] Aiming at the defects existing in the prior art, the purpose of the present invention is to provide an anti-interference trunk sealing strip, a vehicle, and a sealing strip parameter design method, which can solve the problem of abnormal noise generated by the collision between the tailgate and the side panel during driving in the prior art.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] In the first aspect, the present invention provides an anti-interference trunk sealing strip, including:

[0007] A clamping portion for clamping on the body opening edge;

[0008] A bubble tube connected to the clamping portion;

[0009] A plug tube of a set length disposed at a set position inside the bubble tube for supporting the bubble tube.

[0010] In some alternative solutions, the plug tube includes an outer tube and an inner tube disposed therein, and the outer tube and the inner tube are connected by a plurality of spaced support bars.

[0011] In some alternative solutions, both the outer tube and the inner tube are hexagonal and are connected by six spaced support bars.

[0012] In some alternative solutions, the plug tube abuts against the inner side of the bubble tube.

[0013] In some alternative solutions, the plug tube is a sponge part.

[0014] In the second aspect, the present invention further provides a vehicle including any one of the above anti-interference trunk sealing strips.

[0015] Second aspect, the present invention also provides a method for designing the parameters of a sealing strip, which is used to design the parameters of the trunk sealing strip according to any one of the above, and includes the following steps:

[0016] According to the passing angle of the trunk lid, determine the interference range between the trunk lid and the body flange;

[0017] According to the interference range between the trunk lid and the body flange, determine the set length of the plug tube;

[0018] Judge whether the reaction force of the sealing strip with a plug tube inside the bubble tube meets the set sealing reaction force requirement of the trunk lock point. If not, adjust the compression load of the bubble tube and / or the plug tube until the requirement is met.

[0019] In some alternative solutions, the determining the interference range between the trunk lid and the body flange according to the passing angle of the trunk lid includes:

[0020] Obtain the passing angle of the trunk lid;

[0021] Establish a model including the trunk lid and the body flange, and place the trunk lid at the passing angle position;

[0022] Draw a cross-section at a set interval at the contact position between the trunk lid and the body flange. When the gap between the trunk lid and the body flange does not meet the set gap, or the surface difference between the trunk lid and the body flange does not meet the set surface difference, it is determined that there is interference between the trunk lid and the body flange.

[0023] In some alternative solutions, the obtaining the passing angle of the trunk lid includes:

[0024] Adjust the lock catch of the trunk lid to the limit position;

[0025] Close the trunk lid and determine the passing angle of the trunk lid.

[0026] In some alternative solutions, the judging whether the reaction force of the sealing strip with a plug tube inside the bubble tube meets the set sealing reaction force requirement of the trunk lock point includes:

[0027] According to the compression load and length of the bubble tube, determine the total reaction moment of the bubble tube. According to the compression load and length of the plug tube, determine the total reaction moment of the plug tube;

[0028] According to the total reaction moment of the bubble tube and the total reaction moment of the plug tube, determine the sealing reaction force of the trunk lock point;

[0029] According to the sealing reaction force of the trunk lock point, judge whether the reaction force of the sealing strip with a plug tube inside the bubble tube meets the set sealing reaction force requirement of the trunk lock point.

[0030] Compared with the prior art, the advantages of the present invention are as follows: The clamping part is clamped on the hemming of the body-in-white. When closing the trunk lid, since a plug tube with a set length is installed at the set position of the bubble tube, the supporting force of the sealing strip at the interference position can be improved when closing the trunk lid, avoiding interference between the trunk lid and the hemming of the body-in-white, and reducing the possibility of interference between the trunk lid and the side panel during dynamic closing of the trunk lid or driving on a bumpy road. Moreover, this solution only needs to install a plug tube with a set length and unit compression load in the bubble tube at the set position, only strengthening the supporting strength of the interference part, and will not greatly increase the sealing reaction force of the entire sealing strip, thus causing the problem of inability to close the door. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic structural diagram of an anti-interference trunk sealing strip in an embodiment of the present invention;

[0033] Figure 2 It is a flowchart of a sealing strip parameter design method in an embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of modeling and dividing sections in an embodiment of the present invention;

[0035] Figure 4 It is a schematic diagram of interference between the hemming of the body-in-white and the trunk lid in an embodiment of the present invention.

[0036] In the figure: 1. Clamping part; 10. Main body; 11. Arc-shaped lip; 12. Process rib; 13. Pawl; 14. Teeth; 2. Hemming of the body-in-white; 3. Bubble tube; 4. Plug tube; 41. Outer layer tube; 42. Inner layer tube; 43. Support strip; 5. Trunk lid; 6. Section. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0038] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0039] After analysis, it was found that due to the limitations of the shape, some parts of the trunk lid will interfere with each other when it is dynamically closed or driving on bumpy roads. Usually, limit blocks or buffer blocks cannot be arranged at these interfering positions for impact / closing protection. It is these interferences that cause paint to be worn against the side panel, resulting in rust on the panel and abnormal noise.

[0040] like Figure 1 As shown, the present invention provides an anti-interference luggage box sealing strip, comprising: a clamping portion 1, a bubble tube 3 and a plug tube 4.

[0041] The clamping part 1 is used to clamp on the white body stop 2; the bubble tube 3 is connected to the clamping part 1; the plug tube 4 of a set length is set at a set position in the bubble tube 3 to support the bubble tube 3.

[0042] When using this anti-interference trunk sealing strip, the clamping portion 1 is clamped onto the body-in-white (BW) stop 2. When closing the trunk lid 5, a race tube of a set length is installed at the set position of the bubble tube 3. The set position is determined by the interference range between the trunk lid 5 and the body-in-white (BW) stop 2, and the interference range is determined by the clearance angle of the trunk lid 5. The lock of the trunk lid 5 is adjusted to the limit position, i.e., the clearance angle position. When the trunk lid 5 is closed, if the clearance between the trunk lid 5 and the body-in-white (BW) stop 2 does not meet the set clearance, or the surface difference between the trunk lid 5 and the body-in-white (BW) stop 2 does not meet the set surface difference, interference between the trunk lid 5 and the body-in-white (BW) stop 2 is determined. This improves the supporting force of the sealing strip at the interference position when closing the trunk lid 5, prevents interference between the trunk lid 5 and the body-in-white (BW) stop 2, and reduces the possibility of interference between the trunk lid 5 and the side panel during dynamic closing or driving on bumpy roads. Moreover, this solution only requires installing a plug tube 4 of a set length in the bubble tube 3 at a set position, which only strengthens the supporting strength of the interference part and will not significantly increase the sealing reaction force of the entire sealing strip, thereby causing the problem of being unable to close the car door.

[0043] In addition, a curved lip 11 is provided on one side of the main body 10 of the clamping part 1 , and a technical rib 12 is provided between the curved lip 11 and the main body of the clamping part 1 . The technical rib 12 is located on the inner side of the curved lip 11 .

[0044] The clamping part 1 includes a main body 10 which is U-shaped. The bubble tube 3 is arranged on one side of the closed end of the U-shaped bubble tube 3. At least one pawl 13 is provided on each of the two side walls inside the U-shaped main body 10, and the pawls 13 on the two side walls inside the U-shaped main body 10 correspond to each other one by one. The sum of the lengths of the pawls 13 at the corresponding positions on the two side walls inside the U-shaped main body 10 is greater than the distance between the two side walls inside the U-shaped main body 10. Therefore, when the pawls 13 on the two side walls inside the U-shaped main body 10 are installed on the white body edge 2, the pawls 13 will bend towards the closed end of the U-shaped main body 10. In addition, a plurality of teeth 14 are provided on the other side of the U-shaped main body 10.

[0045] In this example, the trunk lid 5 is the rear tailgate / trunk of the vehicle. The trunk seal strip is a rubber strip installed on the tailgate edge for sealing purposes; the seal strip plug tube; a sponge tube with a special shape and a certain length, which is inserted into the bubble tube of the seal strip; the test condition of forcefully closing the tailgate when closing is used to simulate violent door closing.

[0046] In some alternative embodiments, the plug tube 4 includes an outer tube 41 and an inner tube 42 arranged therein. The outer tube 41 and the inner tube 42 are connected by a plurality of support bars 43 arranged at intervals.

[0047] In this embodiment, the plug tube 4 is designed as a double-layer tube structure, including the outer tube 41 and the inner tube 42 arranged therein, and the outer tube 41 and the inner tube 42 are connected by a plurality of support bars 43 arranged at circumferential intervals. This can ensure that the plug tube 4 has sufficient supporting force, avoid interference between the trunk lid 5 and the white body edge 2, and reduce the possibility of interference between the trunk lid 5 and the side body sheet metal during dynamic closing or driving on a bumpy road surface. In addition, it is also convenient to adjust the supporting force of the plug tube 4 on the entire seal strip. For example, the supporting force on the seal strip can be adjusted by adjusting the number of support bars 43 arranged at circumferential intervals between the outer tube 41 and the inner tube 42. This can avoid the problem that it is difficult to close the white body edge 2 due to excessive supporting force, and the problem that the interference between the trunk lid 5 and the side body sheet metal may occur during dynamic closing or driving on a bumpy road surface cannot be solved due to insufficient supporting force.

[0048] In some alternative embodiments, both the outer tube 41 and the inner tube 42 are hexagonal and are connected by six support bars 43 arranged at intervals.

[0049] In this embodiment, both the outer tube 41 and the inner tube 42 are hexagonal, which can provide a certain supporting force to the bubble tube 3 and make the supporting force received by the bubble tube 3 relatively uniform. In addition, in other embodiments, the plug tube 4 can also be made into a regular polygon with other numbers of sides, and the number of support bars 43 between the outer tube 41 and the inner tube 42 is the same as the number of sides of the outer tube 41 and the inner tube 42 to adjust the supporting force on the bubble tube 3. For example, when greater supporting force is required, the number of sides of the outer tube 41 and the inner tube 42 can be increased, and the number of support bars 43 can be increased. When reduced supporting force is required, the number of sides of the outer tube 41 and the inner tube 42 can be decreased, and the number of support bars 43 can be decreased. In addition, the supporting force on the bubble tube 3 can also be adjusted by adjusting the materials of the outer tube 41, the inner tube 42, and / or the support bars 43 to adjust the sealing reaction force of the entire sealing strip.

[0050] In some alternative solutions, the plug tube 4 abuts against the inner side of the bubble tube 3.

[0051] In this embodiment, when the plug tube 4 abuts against the inner side of the bubble tube 3, when the trunk lid 5 is closed, the bubble tube 3 can be directly supported by the plug tube 4, immediately increasing the supporting force at the position where the plug tube is arranged to increase the sealing reaction force.

[0052] In some alternative solutions, the plug tube 4 is a sponge component.

[0053] In this embodiment, the plug tube 4 is made of sponge. Since the sponge has good resilience and reset ability, it can provide a certain supporting force. When the trunk lid 5 is closed, it provides a certain supporting reaction force to the bubble tube 3. After the trunk lid 5 is opened, it can return to its original state and can provide a supporting reaction force to the bubble tube when the trunk lid 5 is closed again next time. It can prevent interference between the trunk lid 5 and the body opening 2, and reduce the possibility of interference between the trunk lid 5 and the side panel during dynamic closing of the trunk lid or driving on a bumpy road surface.

[0054] On the other hand, a vehicle includes the above-mentioned anti-interference trunk sealing strip.

[0055] When using the anti-interference luggage compartment sealing strip, the clamping part 1 is clamped on the body opening edge 2. When closing the luggage compartment lid 5, since a plug tube with a set length is installed at the set position of the bubble tube 3, the set position is determined by the interference range between the luggage compartment lid 5 and the body opening edge 2, and the interference range is determined by the passing angle of the luggage compartment lid 5. Adjust the lock catch of the luggage compartment lid 5 to the extreme position, that is, the passing angle position, and close the luggage compartment lid 5. When the gap between the luggage compartment lid 5 and the body opening edge 2 does not meet the set gap, or the surface difference between the luggage compartment lid 5 and the body opening edge 2 does not meet the set surface difference, it is determined that there is interference between the luggage compartment lid 5 and the body opening edge 2. In this way, when closing the luggage compartment lid 5, the supporting force of the sealing strip at the interference position can be improved, avoiding interference between the luggage compartment lid 5 and the body opening edge 2, and reducing the possibility of interference between the luggage compartment lid 5 and the side body sheet metal during dynamic closing of the luggage compartment lid 5 or driving on a bumpy road surface. Moreover, in this solution, only a plug tube 4 with a set length needs to be installed in the bubble tube 3 at the set position, and only the supporting strength of the interference part is enhanced, without significantly increasing the sealing reaction force of the entire sealing strip, thus avoiding the problem of inability to close the door.

[0056] In addition, an arc-shaped lip 11 is provided on one side of the main body 10 of the clamping part 1, and a process rib 12 is provided between the arc-shaped lip 11 and the main body of the clamping part 1, and the process rib 12 is located inside the arc-shaped lip 11.

[0057] The clamping part 1 includes a main body 10, the main body 10 is U-shaped, the bubble tube 3 is arranged on one side of the closed end of the U-shaped bubble tube 3, at least one pawl 13 is provided on each of the two side walls inside the U-shaped main body 10, and the pawls 13 on the two side walls inside the U-shaped main body 10 correspond to each other. The sum of the lengths of the pawls 13 at the corresponding positions on the two side walls inside the U-shaped main body 10 is greater than the distance between the two side walls inside the U-shaped main body 10. Therefore, when the pawls 13 on the two side walls inside the U-shaped main body 10 are installed on the body opening edge 2, the pawls 13 will bend towards the closed end of the U-shaped main body 10, facing the closed end of the U-shaped main body 10. In addition, a plurality of teeth 14 are provided on the other side of the U-shaped main body 10.

[0058] In this embodiment, the plug tube 4 includes an outer layer tube 41 and an inner layer tube 42 arranged therein, and the outer layer tube 41 and the inner layer tube 42 are connected by a plurality of support strips 43 arranged at intervals.

[0059] In this embodiment, the plug tube 4 is designed to have a double-tube structure, including an outer tube 41 and an inner tube 42 disposed therein, and the outer tube 41 and the inner tube 42 are connected by a plurality of support bars 43 arranged at circumferential intervals. This can ensure that the plug tube 4 has sufficient supporting force, avoid interference between the trunk lid 5 and the body flange 2, and reduce the possibility of interference between the trunk lid 5 and the side panel during dynamic closing or driving on a bumpy road. In addition, it is also convenient to adjust the supporting force of the plug tube 4 on the entire sealing strip. For example, the supporting force on the sealing strip can be adjusted by adjusting the number of support bars 43 arranged at circumferential intervals between the outer tube 41 and the inner tube 42. This can avoid problems such as difficulty in closing the body flange 2 due to excessive supporting force, and the problem that insufficient supporting force cannot solve the interference between the trunk lid 5 and the side panel during dynamic closing or driving on a bumpy road.

[0060] In some alternative embodiments, both the outer tube 41 and the inner tube 42 are hexagonal and are connected by six support bars 43 arranged at intervals.

[0061] In this embodiment, both the outer tube 41 and the inner tube 42 are hexagonal, which can provide a certain supporting force to the bubble tube 3 and make the supporting force received by the bubble tube 3 relatively uniform. In addition, in other embodiments, the plug tube 4 can also be made into a regular polygon with other numbers of sides, and the number of support bars 43 between the outer tube 41 and the inner tube 42 is the same as the number of sides of the outer tube 41 and the inner tube 42 to adjust the supporting force on the bubble tube 3. For example, when greater supporting force is required, the number of sides of the outer tube 41 and the inner tube 42 can be increased, and the number of support bars 43 can be increased. When less supporting force is required, the number of sides of the outer tube 41 and the inner tube 42 can be decreased, and the number of support bars 43 can be decreased. In addition, the supporting force on the bubble tube 3 can also be adjusted by adjusting the materials of the outer tube 41, the inner tube 42, and / or the support bars 43 to adjust the sealing reaction force of the entire sealing strip.

[0062] In some alternative solutions, the plug tube 4 abuts against the inside of the bubble tube 3.

[0063] In this embodiment, when the plug tube 4 abuts against the inside of the bubble tube 3, when the trunk lid 5 is closed, the bubble tube 3 is directly supported by the plug tube 4, immediately increasing the supporting force at the position where the plug tube is arranged to increase the sealing reaction force.

[0064] In some alternative solutions, the plug tube 4 is made of sponge.

[0065] In this embodiment, the plug tube 4 is made of a sponge. Since the sponge has good resilience and reset ability, it can provide a certain supporting force. When the trunk lid 5 is closed, it provides a certain supporting reaction force to the bubble tube 3. After the trunk lid 5 is opened, it can return to its original state and provide a supporting reaction force to the bubble tube when the trunk lid 5 is closed again next time. This can prevent interference between the trunk lid 5 and the body opening edge 2 of the white body, and reduce the possibility of interference between the trunk lid 5 and the side panel during dynamic closing or driving on a bumpy road surface.

[0066] Nowadays, the styling pursues smaller gap between the door and the surrounding parts. For designers, it is particularly important to achieve refined design. The trunk lid and the side panel usually define a gap of 3.5 mm. In the corner area of the trunk shoulder, it is the area most prone to paint chipping, mainly due to the following two reasons: manufacturing accuracy, and the poor hemming effect of the trunk lid sheet metal in the corner area, which is likely to cause a small gap.

[0067] As Figure 2 shown, on the other hand, the present invention also provides a method for designing the parameters of the sealing strip, which is used to design the parameters of the above anti-interference trunk sealing strip, and includes the following steps:

[0068] S1: Determine the interference range between the trunk lid 5 and the body opening edge 2 of the white body according to the passing angle of the trunk lid 5.

[0069] In this example, the trunk lid 5 is the rear tailgate / trunk of the vehicle, and the trunk sealing strip is a rubber strip installed on the tailgate opening edge for sealing; over-closing is the test condition of forcefully closing the tailgate, which is used to simulate violent door closing.

[0070] In some alternative embodiments, step S1 includes:

[0071] S11: Obtain the passing angle of the trunk lid 5.

[0072] Over-closing is the test condition of forcefully closing the tailgate, which is used to simulate violent door closing. The difference between the closing angle in the extreme state under this condition and the closing angle during normal closing is the passing angle. In this example, in order to obtain the closing angle under the test condition of forcefully closing the tailgate.

[0073] In some alternative embodiments, step S11 includes:

[0074] Adjust the lock of the trunk lid 5 to the extreme position; close the trunk lid 5 to determine the passing angle of the trunk lid 5.

[0075] In this example, the lock of the trunk lid 5 is adjusted to the extreme position, and the closing angle corresponding to this position is basically the same as the closing angle under the test condition of forcefully closing the tailgate. The difference between the closing angle at this time and the closing angle during normal closing is taken as the passing angle.

[0076] S12: Establish a model including the trunk lid 5 and the body opening edge 2, and make the trunk lid 5 in the passing angle position.

[0077] Since it is difficult to directly measure the gap and surface difference between the trunk lid 5 and the body opening edge 2, a model of the trunk lid 5 and the body opening edge 2 is established, and the trunk lid 5 is in the passing angle position. The interference position between the trunk lid 5 and the body opening edge 2 is determined through the model.

[0078] S13: Draw cross-sections at intervals of a set distance at the contact positions between the trunk lid 5 and the body opening edge 2. When the gap between the trunk lid 5 and the body opening edge 2 does not meet the set gap, or the surface difference between the trunk lid 5 and the body opening edge 2 does not meet the set surface difference, it is determined that there is interference between the trunk lid 5 and the body opening edge 2.

[0079] In this embodiment, considering the structure of the environmental parts, the initially judged position may not be the most severe position, and it is necessary to specifically make cross-sections of the established model for confirmation. In this example, the set gap value between the trunk lid 5 and the body opening edge 2 is 3.5 ± 1.2 mm, and the set surface difference between the trunk lid 5 and the body opening edge 2 is -1 ± 1.2 mm. Considering the extreme states of the gap and the surface difference, multiple cross-sections are drawn for judgment. As Figure 3 shown, a cross-section 6 is drawn every 10 mm.

[0080] The content of the cross-section is as Figure 3 shown. During the closing process, the trunk lid 5 and the body opening edge 2 include state A and state B. The interference between the trunk lid 5 and the body opening edge 2 is as Figure 4 shown, where state B represents the state where there is interference between the trunk lid 5 and the body opening edge 2. Among all the cross-sections, find all the cross-sections in the state where there is interference between the trunk lid 5 and the body opening edge 2. The area composed of these cross-sections is the area with the greatest interference risk.

[0081] S2: Determine the set length of the plug tube 4 according to the interference range between the trunk lid 5 and the body opening edge 2.

[0082] The sealing strip plug tube is a sponge tube with a special shape and a certain length, which is inserted into the sealing strip bubble tube; after finding the cross-sections of all the interference states between the trunk lid 5 and the white body stop 2, the area composed of these cross-sections is the area with the greatest interference risk. According to the positions of these areas, the length of the sealing strip plug tube is obtained. This length needs to cover the interference interval, and a margin of 50 mm should be left at both ends.

[0083] S3: Determine whether the reaction force of the sealing strip with the plug tube 4 provided in the bubble tube 3 meets the set sealing reaction force requirement of the trunk lock point. If not, adjust the compression load of the bubble tube 3 and / or the plug tube 4 until the requirement is met.

[0084] In some alternative embodiments, determining whether the reaction force of the sealing strip with the plug tube 4 provided in the bubble tube 3 meets the set sealing reaction force requirement of the trunk lock point includes:

[0085] S31: Determine the total reaction moment of the bubble tube 3 according to the compression load and length of the bubble tube 3, and determine the total reaction moment of the plug tube 4 according to the compression load and length of the plug tube 4.

[0086] Taking the bubble tube 3 as an example, divide the bubble tube 3 into several small segments.

[0087] According to the formula 、 and , determine the total reaction moment of the bubble tube 3, where is the length of the i th segment of the bubble tube 3, P is the unit compression load of the bubble tube 3, which is the compression load at a compression of 100 mm in this example, is the reaction force of the i th segment of the bubble tube 3, is the distance from the i th segment of the bubble tube 3 to the hinge, is the angle between the force direction and the connecting line of the hinge axes, is the reaction moment provided by the i th segment of the bubble tube 3, is the total reaction moment of the bubble tube 3.

[0088] S32: Determine the sealing reaction force of the trunk lock point according to the total reaction moment of the bubble tube 3 and the total reaction moment of the plug tube 4.

[0089] In this embodiment, after obtaining the resultant moment of the sealing strip, the sealing reaction force of the trunk lock point can be calculated.

[0090] S33: Determine whether the reaction force of the sealing strip with the plug tube 4 provided in the bubble tube 3 meets the set sealing reaction force requirement of the trunk lock point according to the sealing reaction force of the trunk lock point.

[0091] In this example, if the seal reaction force value meets the requirements of the trunk lid TB mode (the vehicle's TB mode has an index requirement for the seal reaction force of the trunk, generally requiring > 250 N to ensure no abnormal noise in the vehicle), the compression load value of the sealing strip can be inversely deduced to meet the requirements. On this basis, the compression load value of the bubble tube 3 with the plug tube 4 sealing strip can be designed. Considering the size of the interference value at the cross-section, the compression load value of the bubble tube 3 with the plug tube 4 sealing strip can be inversely deduced.

[0092] In addition, the seal reaction force requirement of the trunk lock point can be verified by CAE simulation. The over-closure verification of the trunk lid 5 is carried out at a speed of 3.0 m / s. The plastic strain of the sheet metal meets the design index requirements (the yield strength of the material < 0.2%. Exceeding this value, the sheet metal will undergo permanent deformation), indicating that the scheme of adding a sealing strip plug tube in the key area can avoid the risk of dynamic interference.

[0093] To sum up, when using this anti-interference trunk sealing strip, the clamping part 1 is clamped on the body flange 2. When closing the trunk lid 5, since a plug tube with a set length is installed at the set position of the bubble tube 3, the set position is determined by the interference range between the trunk lid 5 and the body flange 2, and the interference range is determined by the passing angle of the trunk lid 5. The lock of the trunk lid 5 is adjusted to the limit position, that is, the passing angle position. When closing the trunk lid 5, if the gap between the trunk lid 5 and the body flange 2 does not meet the set gap, or the surface difference between the trunk lid 5 and the body flange 2 does not meet the set surface difference, it is determined that there is interference between the trunk lid 5 and the body flange 2. In this way, when closing the trunk lid 5, the supporting force of the sealing strip at the interference position can be increased, avoiding interference between the trunk lid 5 and the body flange 2, and reducing the possibility of interference between the trunk lid 5 and the side panel sheet metal during dynamic closing or driving on a bumpy road. Moreover, this solution only requires installing a plug tube 4 with a set length and a set unit compression load in the bubble tube 3 at the set position, only strengthening the supporting strength of the interference part, and will not significantly increase the seal reaction force of the entire sealing strip, thus causing the problem of inability to close the door.

[0094] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0095] It should be noted that in the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0096] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An anti-interference luggage seal strip, characterized in that, Including: A clamping part (1) for clamping on the body-in-white flange (2); A bubble tube (3) connected to the clamping part (1); A plug tube (4) of a set length disposed at a set position within the bubble tube (3) for supporting the bubble tube (3); The parameters of the anti-interference trunk seal are designed to: determine the interference range between the trunk lid (5) and the body-in-white flange (2) according to the passing angle of the trunk lid (5); Determine the set length of the plug tube (4) according to the interference range between the trunk lid (5) and the body-in-white flange (2); Judge whether the seal reaction force of the seal strip with the plug tube (4) provided in the bubble tube (3) meets the set trunk lock point seal reaction force requirement. If not, adjust the compression load of the bubble tube (3) and / or the plug tube (4) until the requirement is met; The determining the interference range between the trunk lid (5) and the body-in-white flange (2) according to the passing angle of the trunk lid (5) includes: Obtaining the passing angle of the trunk lid (5); Establishing a model including the trunk lid (5) and the body-in-white flange (2) and positioning the trunk lid (5) at the passing angle position; Drawing cross-sections at set intervals at the contact positions between the trunk lid (5) and the body-in-white flange (2). When the gap between the trunk lid (5) and the body-in-white flange (2) does not meet the set gap, or the surface difference between the trunk lid (5) and the body-in-white flange (2) does not meet the set surface difference, it is determined that there is interference between the trunk lid (5) and the body-in-white flange (2).

2. The anti-interference luggage seal strip according to claim 1, wherein, The plug tube (4) includes an outer layer tube (41) and an inner layer tube (42) disposed therein. The outer layer tube (41) and the inner layer tube (42) are connected by a plurality of spaced support bars (43).

3. The interference-preventing trunk sealing strip according to claim 2, wherein Both the outer layer tube (41) and the inner layer tube (42) are hexagonal and are connected by six spaced support bars (43).

4. The interference-preventing luggage seal strip according to claim 1, wherein, The plug tube (4) abuts against the inner side of the bubble tube (3).

5. The interference-preventing luggage seal strip according to claim 1, characterized in that The plug tube (4) is a sponge component.

6. A vehicle, characterized in that, Including the anti-interference trunk seal according to any one of claims 1-5.

7. A method for designing the parameters of a sealing strip, characterized in that, The method for designing the parameters of the anti-interference trunk seal according to claim 1 includes the following steps: Determine the interference range between the trunk lid (5) and the body-in-white flange (2) according to the passing angle of the trunk lid (5); Determine the set length of the plug tube (4) according to the interference range between the trunk lid (5) and the body-in-white flange (2); Judge whether the seal reaction force of the seal strip with the plug tube (4) provided in the bubble tube (3) meets the set trunk lock point seal reaction force requirement. If not, adjust the compression load of the bubble tube (3) and / or the plug tube (4) until the requirement is met; The determining the interference range between the trunk lid (5) and the body-in-white flange (2) according to the passing angle of the trunk lid (5) includes: Obtaining the passing angle of the trunk lid (5); Establishing a model including the trunk lid (5) and the body-in-white flange (2) and positioning the trunk lid (5) at the passing angle position; Draw a cross-section at an interval of a set distance at the contact position between the trunk lid (5) and the body opening edge (2). When the gap between the trunk lid (5) and the body opening edge (2) does not meet the set gap, or the flushness between the trunk lid (5) and the body opening edge (2) does not meet the set flushness, it is determined that there is interference between the trunk lid (5) and the body opening edge (2).

8. The method for designing the sealing strip parameters according to claim 7, wherein The obtaining of the passing angle of the trunk lid (5) includes: Adjust the lock of the trunk lid (5) to the extreme position; Close the trunk lid (5) to determine the passing angle of the trunk lid (5).

9. The method for designing the parameters of the sealing strip according to claim 7, wherein The judgment of whether the reaction force of the sealing strip with the plug tube (4) provided in the bubble tube (3) meets the set sealing reaction force requirement of the trunk lock point includes: Determine the total reaction moment of the bubble tube (3) according to the compression load and length of the bubble tube (3), and determine the total reaction moment of the plug tube (4) according to the compression load and length of the plug tube (4); Determine the sealing reaction force of the trunk lock point according to the total reaction moment of the bubble tube (3) and the total reaction moment of the plug tube (4); Judge whether the reaction force of the sealing strip with the plug tube (4) provided in the bubble tube (3) meets the set sealing reaction force requirement of the trunk lock point according to the sealing reaction force of the trunk lock point.

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