Safety belt retractor and vehicle

Abstract

The application discloses a fixing structure of a safety belt retractor and a vehicle, and the fixing structure of the safety belt retractor comprises a stand column, a first support connected to the stand column, a first mounting part of the first support extending towards a front direction of the vehicle, the first mounting part being used for connecting an upper end of the safety belt retractor, a second support connected to the stand column and located below the first support, a second mounting part of the second support extending towards the front direction of the vehicle, the second mounting part being used for connecting a lower end of the safety belt retractor, and a prolongation line of the first mounting part extending towards the front direction of the vehicle, a prolongation line of the second mounting part extending towards the front direction of the vehicle and the stand column forming a triangular structure. Thus, the fixing structure of the safety belt retractor has high connection strength and rigidity, has strong stability, and can improve the abnormal sound problem in a bumpy road or when a door is violently closed.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a seatbelt retractor fixing structure and vehicle. Background Technology

[0002] The seat belt retractor is an important component of the seat belt assembly. It restrains passengers in the event of a collision and plays a role in protecting their safety. The retractor weighs about 1.5 kg and is usually fixed to the vehicle's pillars by screws.

[0003] In most related technologies, the retractor is fixedly connected to a bracket, which in turn is fixedly connected to the vehicle body. However, due to the generally weak overall rigidity of the mounting bracket on most vehicles, the connection between the retractor and the bracket, as well as the weak rigidity of the bracket's connection to the vehicle body or insufficient rigidity of the sheet metal of the fixed bracket, the retractor itself may flip or vibrate on certain bumpy roads or when the door is slammed shut. Furthermore, the mounting bracket and the retractor together form a single-mass system, which is easily excited after bumpy roads or forceful door slamming, resonating with external stimuli and producing vibrations and noises. Seriously, this results in a poor customer experience and reduces the overall quality of the vehicle. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a fixing structure for a seat belt retractor, in which a first bracket and a second bracket are connected to a column, so that the retractor is hung between the first bracket and the second bracket, and a triangular structure is formed between the column, the first bracket and the second bracket, so that the fixing structure has high rigidity and strength.

[0005] The present invention also proposes a vehicle.

[0006] According to an embodiment of the first aspect of the present invention, the fixing structure of a seat belt retractor includes: a column; a first bracket connected to the column, the first bracket having a first mounting portion extending in a forward direction, the first mounting portion being used to connect to the upper end of the seat belt retractor; a second bracket connected to the column and located below the first bracket, the second bracket having a second mounting portion extending in a forward direction, the second mounting portion being used to connect to the lower end of the seat belt retractor; and an extension line of the first mounting portion extending in a forward direction, an extension line of the second mounting portion extending in a forward direction, and the column forming a triangular structure.

[0007] According to an embodiment of the present invention, the seatbelt retractor fixing structure includes a first bracket and a second bracket connected to a column. The first and second brackets are respectively provided with a first mounting portion and a second mounting portion extending in the direction of forward movement, allowing the seatbelt retractor to be stably mounted between the first and second mounting portions. Furthermore, with the seatbelt retractor connecting the first and second mounting portions as the connection point, the extension lines of the first and second mounting portions extending in the direction of forward movement, together with the column, form a closed triangular structure. This gives the seatbelt retractor fixing structure high connection stiffness and strong structural stability, thereby enhancing the connection stiffness and modal characteristics between the seatbelt retractor and the first and second brackets. Simultaneously, it achieves frequency avoidance effects, effectively improving the abnormal noise problem of the seatbelt retractor on bumpy roads or when the door is slammed, thus improving the vehicle's overall quality.

[0008] According to some embodiments of the present invention, in the triangular structure, the included angle between the first mounting part and the column is an obtuse angle, and the included angle between the second mounting part and the column is an acute angle.

[0009] According to some embodiments of the present invention, the obtuse angle is α, and the α satisfies the relationship: 90°<α≤100°; and / or, the acute angle is β, and the β satisfies the relationship: 60°≤β≤80°.

[0010] According to some embodiments of the present invention, the angle difference between the obtuse angle and the acute angle is γ, and the γ satisfies the relationship: 10°≤γ.

[0011] According to some embodiments of the present invention, the first mounting part is provided with first flanges on both the upper and lower sides, and both first flanges extend toward the side facing the vehicle interior; and / or the second mounting part is provided with a second flange on the lower side, and the second flange extends toward the side facing the vehicle interior.

[0012] According to some embodiments of the present invention, the first flange has a first lateral dimension in the direction facing the interior of the vehicle, and the first lateral dimension decreases from one end of the first flange near the pillar to the other end away from the pillar; and / or, the second flange has a second lateral dimension in the direction facing the interior of the vehicle, and the second lateral dimension decreases from one end of the second flange near the pillar to the other end away from the pillar.

[0013] According to some embodiments of the present invention, the first flange is smaller in size in the direction facing the interior of the vehicle than the second flange is in the direction facing the interior of the vehicle.

[0014] According to some embodiments of the present invention, the first bracket further includes: a first connecting portion, the first connecting portion having a bent structure, the first connecting portion being connected to the column and fixedly connected to the first mounting portion; and / or, the second bracket further includes: a second connecting portion, the second connecting portion having a bent structure, the second connecting portion being connected to the column and fixedly connected to the second mounting portion.

[0015] According to some embodiments of the present invention, the fixing structure of the seat belt retractor further includes: a support member and a reinforcing member, the support member being connected to the upright, a portion of the support member overlapping the upper end of the first connecting portion, the support member, the first connecting portion, and the upright being fixedly connected at the overlapping point; and the upright includes: an inner plate and a reinforcing plate, the reinforcing member being disposed between the inner plate and the reinforcing plate, a portion of the reinforcing member being affixed to the inner plate, and the reinforcing member, the lower end of the first connecting portion, and the upright being fixedly connected at the affixing point.

[0016] According to an embodiment of a second aspect of the present invention, a vehicle includes: a seat belt retractor and a fixing structure for the seat belt retractor, wherein the seat belt retractor is mounted between a first mounting portion and a second mounting portion.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a first-view assembly schematic diagram of the fixing structure of the seat belt retractor according to an embodiment of the present invention;

[0020] Figure 2 This is a second-view assembly schematic diagram of the fixing structure of the seat belt retractor according to an embodiment of the present invention;

[0021] Figure 3 This is a first-view structural schematic diagram of the fixing structure of a seat belt retractor according to an embodiment of the present invention;

[0022] Figure 4 This is a second-view assembly schematic diagram of the fixing structure of the seat belt retractor according to an embodiment of the present invention;

[0023] Figure 5 yes Figure 4 A magnified view of a portion of the image;

[0024] Figure 6 yes Figure 4 Enlarged view of part B;

[0025] Figure 7 This is a third-view assembly schematic diagram of the fixing structure of the seat belt retractor according to an embodiment of the present invention;

[0026] Figure 8 This is a structural schematic diagram of the first support from a first perspective according to an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the first support from a second perspective according to an embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the second support from a first perspective according to an embodiment of the present invention;

[0029] Figure 11 This is a structural schematic diagram of the second support from a second perspective according to an embodiment of the present invention;

[0030] Figure 12 This is a structural schematic diagram of a support member according to an embodiment of the present invention;

[0031] Figure 13 This is a structural schematic diagram of the reinforcing member according to an embodiment of the present invention.

[0032] Figure label:

[0033] 100. The fixing structure of the seat belt retractor;

[0034] 10. Column; 11. Inner panel; 12. Opening groove;

[0035] 20. First bracket; 21. First mounting part; 22. First flange; 23. First connecting part; 24. First limiting part;

[0036] 30. Second bracket; 31. Second mounting part; 32. Second flange; 33. Second connecting part; 34. Second limiting part;

[0037] 40. Supporting component; 50. Reinforcing component;

[0038] 200. Seat belt retractor. Detailed Implementation

[0039] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0040] The following is for reference. Figures 1-13The present invention describes a seatbelt retractor fixing structure 100 according to an embodiment of the present invention, and also proposes a vehicle having the above-described seatbelt retractor fixing structure 100.

[0041] like Figures 1-8 As shown, the fixing structure 100 of the seat belt retractor includes: a column 10, a first bracket 20, and a second bracket 30.

[0042] The first bracket 20 is connected to the column 10 and has a first mounting portion 21 extending in the forward direction of the vehicle. The first mounting portion 21 is used to connect the upper end of the seat belt retractor 200. The second bracket 30 is connected to the column 10 and located below the first bracket 20. The second bracket 30 has a second mounting portion 31 extending in the forward direction of the vehicle and is used to connect the lower end of the seat belt retractor 200. This configuration, with the first bracket 20 having the first mounting portion 21 extending in the forward direction of the vehicle and the second bracket 30 having the second mounting portion 31 extending in the forward direction of the vehicle, connects the seat belt retractor 200 between the first mounting portion 21 and the second mounting portion 31. This allows the seat belt retractor 200 to be suspended between the first bracket 20 and the second bracket 30, effectively improving the connection rigidity and modal characteristics of the seat belt retractor's fixing structure 100, while also ensuring a good fit between the seat belt retractor 200 and the vehicle occupants. In addition, a first limiting part 24 is provided on the first bracket 20 and a second limiting part 34 is provided on the second bracket 30. The limiting cooperation between the seat belt retractor 200 and the first limiting part 24 and the second limiting part 34 can better improve the connection rigidity between the seat belt retractor 200 and the first bracket 20 and the second bracket 30, and prevent the seat belt retractor 200 from overturning under certain bumpy road conditions, thereby avoiding the problem of vibration and abnormal noise of the seat belt retractor 200.

[0043] Furthermore, the extension lines of the first mounting part 21 and the second mounting part 31 extending in the direction of the vehicle's front, together with the pillar 10, form a triangular structure. This arrangement, treating the seatbelt retractor 200 as a connection point and ensuring the triangular structure of the extension lines of the first mounting part 21 and the second mounting part 31, effectively improves the connection stiffness and modal characteristics at the seatbelt retractor 200 mounting point, while also providing strong stability and effectively preventing bending deformation of the first bracket 20 and the second bracket 30. Moreover, since the vibration frequency of the suspension system is typically between 40 and 60 Hz, increasing the connection stiffness and modal characteristics at the seatbelt retractor 200 mounting point can raise the natural frequency of the seatbelt retractor's fixing structure 100 and the connection point of the seatbelt retractor 200, making it as far greater than 60 Hz as possible. This effectively avoids resonance generated during the excitation and transmission of vibration energy in the suspension system, effectively reducing abnormal noise problems.

[0044] Furthermore, the first bracket 20 is connected to the side of the column 10 facing the front of the vehicle, and the first mounting part 21 extends in the front direction of the vehicle. The second bracket 30 is connected to the side of the column 10 facing the rear direction of the vehicle, and the column 10 is provided with an opening slot 12. The second mounting part 31 passes through the opening slot 12 and extends in the front direction of the vehicle. This can further enhance the connection stiffness between the first bracket 20, the second bracket 30 and the seat belt retractor 200, as well as enhance the connection stiffness and modal characteristics between the first bracket 20, the second bracket 30 and the column 10.

[0045] Therefore, the first bracket 20 and the second bracket 30 are respectively provided with a first mounting portion 21 and a second mounting portion 31 extending in the direction of the vehicle's front, so that the seat belt retractor 200 is stably attached between the first mounting portion 21 and the second mounting portion 31. Furthermore, with the seat belt retractor 200 connecting the first mounting portion 21 and the second mounting portion 31 as the connection point, the extension lines of the first mounting portion 21 and the second mounting portion 31 extending in the direction of the vehicle's front, together with the upright 10, form a closed triangular structure, which can greatly improve the connection stiffness and modal characteristics at the mounting point of the seat belt retractor 200, and at the same time have strong stability, effectively preventing the first bracket 20 and the second bracket 30 from bending and deforming. Furthermore, by increasing the connection stiffness and modal characteristics at the installation point of the seatbelt retractor 200, the natural frequencies of the seatbelt retractor fixing structure 100 and the seatbelt retractor 200 can be increased, allowing them to avoid the vibration frequency range of the suspension system as much as possible. This can effectively prevent resonance generated during the excitation and transmission of vibration energy, improve the abnormal noise problem of the seatbelt retractor 200 on bumpy roads or when the door is slammed, and enhance the vehicle's quality.

[0046] Furthermore, in the triangular structure, the included angle between the first mounting part 21 and the column 10 is an obtuse angle, and the included angle between the second mounting part 31 and the column 10 is an acute angle. That is, the first mounting part 21 extends upwards in the direction of the vehicle's front, forming an obtuse angle between the first mounting part 21 and the column 10, and the second mounting part 31 extends downwards in the direction of the vehicle's front, forming an acute angle between the second mounting part 31 and the column 10. This creates a unique obtuse-angled triangular structure between the first mounting part 21, the second mounting part 31, and the column 10, thereby enabling the first mounting part 21 to provide effective tension and the second mounting part 31 to provide effective support. This effectively enhances the support stiffness and fatigue durability of the seat belt retractor's fixing structure 100, preventing bending deformation of the first mounting part 21 and the second mounting part 31. Compared to the right angle or acute angle between the first mounting part 21 and the pillar 10, the triangular structure with an acute angle between the second mounting part 31 and the pillar 10 can further improve the connection stiffness and modal characteristics between the first bracket 20, the second bracket 30, and the seat belt retractor 200. According to the natural frequency formula, the greater the stiffness, the greater the natural frequency. Therefore, the triangular structure formed by the first bracket 20, the second bracket 30, and the seat belt retractor 200 has a higher natural frequency, which can more effectively avoid the vibration frequency of the suspension system, achieve frequency avoidance effect, and effectively prevent resonance problems caused by the excitation and transmission of vehicle body vibration energy, reduce vibration and abnormal noise problems, and at the same time effectively improve the service life of the seat belt retractor 200 and protect the life safety of the occupants.

[0047] Wherein, the obtuse angle is α, which satisfies the relationship: 90°<α≤100°; and / or, the acute angle is β, which satisfies the relationship: 60°≤β≤80°. With this configuration, the included angle between the first mounting part 21 and the pillar 10 is within the range of 90°~100°, and the included angle between the second mounting part 31 and the pillar 10 is within the range of 60°~80°. This creates an obtuse-angled triangular structure with a small obtuse angle between the first mounting part 21, the second mounting part 31, and the pillar 10, preventing the first mounting part 21 and the second mounting part 31 from tilting excessively upwards in the vertical direction. This allows the seatbelt retractor fixing structure 100 to have higher connection stiffness and modal characteristics, effectively avoiding frequency interference in the suspension system. It also improves the bending strength of the first bracket 20 and the second bracket 30, and ensures that the dimensions of the first mounting part 21 and the second mounting part 31 extending towards the front of the vehicle are similar. If the angle between the first mounting part 21 and the column 10 is too large, the angle between the second mounting part 31 and the column 10 will be too small, causing the first mounting part 21 and the second mounting part 31 to tilt excessively upward. This not only results in the first mounting part 21 and the second mounting part 31 extending too far in the direction of the vehicle's front, but also makes the stability of the triangular structure relatively poor. Consequently, the fixing structure 100 of the seat belt retractor does not achieve high connection stiffness and modality, thus failing to achieve a good frequency avoidance effect and affecting the fixing of the seat belt retractor 200.

[0048] Furthermore, the angle difference between the obtuse and acute angles is γ, which satisfies the relationship: 10°≤γ. That is, under the condition that the angle between the first mounting part 21 and the column 10 is within 90° to 100° and the angle between the second mounting part 31 and the column 10 is within 60° to 80°, setting the difference between the angles between the first mounting part 21 and the column 10 and the second mounting part 31 and the column 10 is greater than or equal to 10° allows the triangular structure formed by the first mounting part 21, the second mounting part 31, and the column 10 to achieve a higher modal frequency. Simultaneously, it provides a good frequency avoidance effect, effectively preventing resonance generated during vibration energy excitation transmission. This enhances the attenuation capability of the seatbelt retractor's fixing structure 100 on the road surface excitation path, effectively attenuating vibration energy at that location and reducing the risk of abnormal noise. If the angle difference γ is too small, the first mounting part 21 and the second mounting part 31 may tend to be parallel to each other, resulting in a triangular structure that cannot achieve a high modal frequency, thus increasing the risk of abnormal noise and vibration.

[0049] Meanwhile, by setting the angle between the first mounting part 21 and the column 10 to be greater than or equal to 10° with the angle between the second mounting part 31 and the column 10, the first bracket 20 and the second bracket 30 can have different natural frequencies, preventing the first bracket 20 and the second bracket 30 from resonating and achieving the frequency avoidance effect of the first bracket 20 and the second bracket 30.

[0050] In this embodiment, the angle between the first mounting part 21 and the pillar 10 is 94°, and the angle between the second mounting part 31 and the pillar 10 is 74°. This gives the seatbelt retractor fixing structure 100 a higher modal frequency, greatly avoiding resonance with the vehicle body structure and effectively reducing abnormal noise. Of course, depending on different vehicle body structures and the specifications of the seatbelt retractor 200, the mounting angles between the first mounting part 21 and the pillar 10, and between the second mounting part 31 and the pillar 10, are not limited to the angle values ​​described above. Figure 5 and Figure 6 As shown, the first mounting portion 21 has first flanges 22 on both its upper and lower sides, and both first flanges 22 extend towards the side facing the vehicle interior; and / or, the second mounting portion 31 has a second flange 32 on its lower side, and the second flange 32 extends towards the side facing the vehicle interior. This arrangement, combined with... Figure 4 and Figure 5 As shown, the first mounting part 21 has first flanges 22 extending towards the vehicle interior on both its upper and lower sides. These flanges improve the bending stiffness and modal characteristics of the first bracket 20, preventing bending deformation during seatbelt retractor 200 use and thus ensuring occupant safety. Combined with... Figure 4 and Figure 6 As shown, a second flange 32 extending towards the vehicle interior is provided on the lower side of the second mounting portion 31. This improves the bending stiffness and modal characteristics of the second bracket 30, enabling the first bracket 20 and the second bracket 30 to reliably connect to the seatbelt retractor 200. However, because a second limiting portion is provided on the upper side of the second mounting portion 31, it is not conducive to setting the second flange 32. This results in a mass difference between the second bracket 30 and the first bracket 20. According to the natural frequency formula, an increase in mass decreases the natural frequency. Therefore, by fine-tuning the mass of the second bracket 30 and the first bracket 20, the natural frequencies of the first bracket 20 and the second bracket 30 can be changed, achieving the effect of adjusting the natural frequencies and thus avoiding the effects of specific excitation frequencies, such as the powertrain excitation frequency at idle.

[0051] Therefore, at the connection between the seat belt retractor fixing structure 100 and the seat belt retractor 200, by increasing the connection stiffness and modal characteristics of the two components, the natural frequency can be increased to be as high as possible above 60Hz. This avoids the vibration frequency range of the suspension system (40Hz–60Hz), achieving a frequency avoidance effect against road vibration excitation. Furthermore, by adding the first flange 22 on the first bracket 20 and the second flange 32 on the second bracket 30, the mass of the first bracket 20 and the second bracket 30 can be fine-tuned. This allows the first bracket 20 and the second bracket 30 to have different natural frequencies, preventing resonance and achieving a frequency avoidance effect against the first bracket 20 and the second bracket 30.

[0052] Furthermore, the dimension of the first flange 22 in the direction facing the interior of the vehicle is the first lateral dimension, which decreases from the end of the first flange 22 closest to the pillar 10 to the end furthest from the pillar 10; and / or, the dimension of the second flange 32 in the direction facing the interior of the vehicle is the second lateral dimension, which decreases from the end of the second flange 32 closest to the pillar 10 to the end furthest from the pillar 10. In other words, the first lateral dimension gradually decreases in the direction towards the front of the vehicle, fine-tuning the mass of the first bracket 20 to change its natural frequency. Similarly, the second flange 32 also gradually decreases in the direction towards the front of the vehicle, fine-tuning the natural frequency of the second bracket 30. This better prevents resonance between the first bracket 20 and the second bracket 30, thereby effectively attenuating the vibration energy at the installation positions of the first bracket 20, the second bracket 30, and the seatbelt retractor 200, reducing the risk of abnormal noise.

[0053] Furthermore, the dimension of the first flange 22 in the direction facing the vehicle interior is smaller than the dimension of the second flange 32 in the same direction. With this configuration, in the entire seatbelt retractor fixing structure 100, according to the force analysis of the first bracket 20 and the second bracket 30, the second bracket 30 mainly plays a supporting role, while the first bracket 20 plays a tensile role. Moreover, the supporting force of the second bracket 30 is greater than the tensile force of the first bracket 20. Therefore, the larger dimension of the second flange 32 in the direction facing the vehicle interior compared to the first flange 22 in the same direction allows the second bracket 30 to have greater bending stiffness to withstand pressure, thereby ensuring that the seatbelt retractor 200 can be reliably supported and connected between the first bracket 20 and the second bracket 30, while effectively improving the frequency avoidance effect between the first bracket 20 and the second bracket 30.

[0054] In this embodiment, the first flange 22 gradually decreases from 15.3 mm to 7.4 mm, and the second flange 32 gradually decreases from 33.6 mm to 13.7 mm. Of course, the dimensions of the first flange 22 and the second flange 32 can also be set to other dimensions to meet the fixing structure 100 of seat belt retractors of different specifications.

[0055] Combination Figures 8-11 As shown, the first bracket 20 further includes: a first connecting portion 23, which is a bent structure, connected to the column 10, and fixedly connected to the first mounting portion 21; and / or, the second bracket 30 further includes: a second connecting portion 33, which is a bent structure, connected to the column 10, and fixedly connected to the second mounting portion 31. With this configuration, the first bracket 20, by providing the first connecting portion 23, increases the connection area between the first bracket 20 and the column 10, thereby improving the connection stiffness between them. This facilitates welding of the first bracket 20 and the column 10 while also improving their stiffness and modal characteristics. Similarly, the second bracket 30, by providing the second connecting portion 33, also increases the connection area between the second bracket 30 and the column 10, thereby improving the connection stiffness between the first bracket 20 and the column 10.

[0056] Combination Figure 12 and Figure 13 As shown, the fixing structure 100 of the seat belt retractor further includes: a support member 40 and a reinforcing member 50. The support member 40 is connected to the column 10, and a portion of the support member 40 overlaps the upper end of the first connecting portion 23. The support member 40, the first connecting portion 23, and the column 10 are fixedly connected at the overlap. The column 10 includes: an inner plate 11 and a reinforcing plate. The reinforcing member 50 is disposed between the inner plate 11 and the reinforcing plate. A portion of the reinforcing member 50 is attached to the inner plate 11, and the lower end of the reinforcing member 50, the first connecting portion 23, and the column 10 are fixedly connected at the attachment point.

[0057] With this configuration, the support member 40 is connected to the column 10 and overlaps the upper end of the first connecting part 23, which can improve the installation rigidity of the first bracket 20 and enhance the connection rigidity between the first bracket 20 and the column 10, thereby reducing the risk of abnormal noise from the seat belt retractor 200. Specifically, the non-overlapping part of the support member 40 is welded to the column 10 with two layers, and the first connecting part 23 is welded to the column 10 with two layers. After the overlapping part of the support member 40 overlaps the upper end of the first connecting part 23, the support member 40, the first connecting part 23, and the column 10 are connected by three layers of welding at the overlap, thereby forming a whole through three-layer welding, further improving the structural rigidity of the first bracket 20. Based on the above embodiment, as... Figure 8 and Figure 9 As shown, the first connecting part 23 is provided with several reinforcing ribs. The structure of the first connecting part 23 can be strengthened by setting the reinforcing ribs, thereby indirectly enhancing the structural stiffness and modal characteristics of the entire first support 20, which is beneficial to reducing the generation of abnormal noise. That is, by setting the support member 40 to be fixedly connected to the column 10 and the first support 20, the connection stiffness and modal characteristics of the fixed structure 100 of the seat belt retractor and the seat belt retractor 200 and its surrounding structure can be further improved, so that the natural frequency of the entire structure is further increased. This can better avoid the vibration frequency generated by the road vibration excitation transmitted to the suspension system, thereby improving the attenuation ability of the road excitation path and reducing the risk of abnormal noise.

[0058] Moreover, the column 10 includes an inner plate 11 and a reinforcing plate. The first bracket 20 and the second bracket 30 are connected to the inner plate 11. Therefore, the rigidity of the inner plate 11 will also affect the connection rigidity between the seat belt retractor 200 and the first bracket 20 and the second bracket 30. By setting the reinforcing plate, not only can the overall structural strength of the column 10 be enhanced, but the structural rigidity of the column 10 can also be enhanced. Furthermore, the reinforcing member 50 is connected between the inner plate 11 and the reinforcing plate. On the one hand, it can better enhance the structural strength and rigidity of the column 10, especially the rigidity of the inner plate 11, thereby providing a higher strength installation position for the first bracket 20 and the second bracket 30, which is conducive to reducing the abnormal noise of the seat belt retractor 200. On the other hand, part of the reinforcing member 50 is attached to the side of the inner plate 11 away from the first bracket 20. The reinforcing member 50, the lower end of the first connecting part 23 and the column 10 are connected by three layers of welding at the attachment point, thereby forming a whole between the reinforcing member 50, the first connecting part 23 and the column 10 through three layers of welding. This enhances the rigidity of the corresponding area at the connection between the inner plate 11 and the first bracket 20, which is conducive to reducing the occurrence of abnormal noise of the seat belt retractor 4 when the road surface is bumpy or the door is closed violently. It also provides support for the entire seat belt retractor fixing structure 100 in the front and rear directions of the vehicle, effectively avoiding the risk of front and rear shaking due to the weak rigidity of the inner plate 11. That is, by setting the reinforcement 50 to be fixedly connected to the inner plate 11, the reinforcement plate and the first bracket 20, the connection stiffness and mode of the fixed structure 100 of the seat belt retractor and the seat belt retractor 200 and its surrounding structure are further improved, so that the natural frequency of the entire structure here is further increased, which can better avoid the vibration frequency generated by the road vibration excitation transmitted to the suspension system, etc., and reduce the risk of abnormal noise.

[0059] According to an embodiment of the second direction of the present invention, a vehicle includes: a seat belt retractor 200 and a seat belt retractor fixing structure 100, wherein the seat belt retractor is mounted between a first mounting portion 21 and a second mounting portion 31.

[0060] Therefore, by designing the connection between the first bracket 20, the second bracket 30, the column 10, and the seatbelt retractor 200, the connection stiffness and modal characteristics between the seatbelt retractor fixing structure 100 and the seatbelt retractor 200 are improved. This effectively increases the natural frequency, making it as much greater than 60Hz as possible, thereby avoiding the vibration frequency range of 40Hz to 60Hz of the suspension system and achieving a frequency avoidance effect against road vibration excitation. Furthermore, by adding the first flange 22 on the first bracket 20 and the second flange 32 on the second bracket 30, the first bracket 20 and the second bracket 30 can have different natural frequencies, preventing resonance problems between the first bracket 20 and the second bracket 30 and achieving a frequency avoidance effect for the first bracket 20 and the second bracket 30. Furthermore, by setting the support member 40 and the reinforcing member 50, the connection stiffness and modal characteristics of the fixed structure 100 of the seat belt retractor and the entire structure around the seat belt retractor 200 are further improved. This can greatly increase the natural frequency, better prevent the resonance problem caused by the transmission of road vibration excitation, effectively improve the abnormal noise problem of the seat belt retractor 200 when the road is bumpy or the door is closed violently, thereby effectively improving the quality of the vehicle.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0062] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0063] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fixing structure (100) for a seatbelt retractor, characterized in that, include: Column (10); The first bracket (20) is connected to the column (10). The first bracket (20) is provided with a first mounting part (21) extending in the direction of the front of the vehicle. The first mounting part (21) is used to connect the upper end of the seat belt retractor (200). The first bracket (20) also includes a first connecting part (23). The first connecting part (23) is a bent structure. The first connecting part (23) is connected to the column (10) and the first connecting part (23) is fixedly connected to the first mounting part (21). The second bracket (30) is connected to the column (10) and located below the first bracket (20). The second bracket (30) is provided with a second mounting part (31) extending in the direction of the front of the vehicle. The second mounting part (31) is used to connect the lower end of the seat belt retractor (200). The extension line of the first mounting part (21) extending in the direction of the front of the vehicle, the extension line of the second mounting part (31) extending in the direction of the front of the vehicle, and the column (10) form a triangular structure. A support member (40) is connected to the column (10), and a portion of the support member (40) overlaps the upper end of the first connecting part (23). The support member (40), the first connecting part (23), and the column (10) are fixedly connected at the overlap. The reinforcing member (50) and the column (10) include an inner plate (11) and a reinforcing plate. The reinforcing member (50) is disposed between the inner plate (11) and the reinforcing plate. Part of the reinforcing member (50) is attached to the inner plate (11), and the lower end of the reinforcing member (50), the first connecting part (23) and the column (10) are fixedly connected at the attachment point.

2. The fixing structure (100) of the seat belt retractor according to claim 1, characterized in that, In the triangular structure, the installation angle between the first mounting part (21) and the column (10) is an obtuse angle, and the installation angle between the second mounting part (31) and the column (10) is an acute angle.

3. The fixing structure (100) of the seat belt retractor according to claim 2, characterized in that, The obtuse angle is α, and α satisfies the following relationship: 90°<α≤100°; and / or, The acute angle is β, and β satisfies the relationship: 60°≤β≤80°.

4. The fixing structure (100) of the seat belt retractor according to claim 3, characterized in that, The angle difference between the obtuse angle and the acute angle is γ, and γ satisfies the relationship: 10°≤γ.

5. The fixing structure (100) of the seat belt retractor according to claim 1, characterized in that, The first mounting part (21) is provided with first flanges (22) on both its upper and lower sides, and both first flanges (22) extend toward one side of the vehicle interior; and / or, The second mounting part (31) has a second flange (32) on its lower side, and the second flange (32) extends toward the side facing the vehicle interior.

6. The fixing structure (100) of the seat belt retractor according to claim 5, characterized in that, The first flange (22) has a first lateral dimension in the direction facing the interior of the vehicle, and the first lateral dimension decreases from one end of the first flange (22) near the pillar (10) to the other end away from the pillar (10); and / or, The second flange (32) has a second lateral dimension in the direction facing the interior of the vehicle. The second lateral dimension of the second flange (32) decreases from one end near the pillar (10) to the other end away from the pillar (10).

7. The fixing structure (100) of the seat belt retractor according to claim 5, characterized in that, The first flange (22) is smaller in size in the direction facing the inside of the vehicle than the second flange (32) is in the direction facing the inside of the vehicle.

8. The fixing structure (100) of the seat belt retractor according to claim 1, characterized in that, The second bracket (30) further includes a second connecting part (33), which is a bent structure. The second connecting part (33) is connected to the column (10) and the second connecting part (33) is fixedly connected to the second mounting part (31).

9. A vehicle, characterized in that, include: Seat belt retractor (200); The seat belt retractor fixing structure (100) according to any one of claims 1-8, wherein the seat belt retractor (200) is installed between the first mounting part (21) and the second mounting part (31).

Images