Side door assembly closing sound quality improvement structure and vehicle

Abstract

This invention provides a structure and vehicle for improving the sound quality of a side door assembly when closing, belonging to the technical field of side door structures. The structure improves the sound quality of the side door assembly when closing by installing two sound-damping plates inside the through cavity of the door pillar. These plates isolate the noise generated by the door lock assembly during closing, preventing sound and airflow from diffusing through the through cavity to the upper roof beam or lower door sill beam. By changing the direction of sound and airflow diffusion and shortening the duration of sound when the side door closes, the high-frequency components of the closing sound are effectively controlled. Furthermore, a reinforcing structure is added to the inner wall of the side door outer panel to improve its dent resistance. A clip is used to secure the pull cable, and a flexible sleeve is installed around the pull cable to prevent impact noise between the cable and the side door reinforcement plate. These structures effectively improve the sound quality when the side door closes.

Description

Technical Field

[0001] This invention belongs to the field of side door structure technology, and more specifically, relates to a structure for improving the sound quality of a side door assembly when closed and a vehicle thereof. Background Technology

[0002] With the development of vehicle technology, customers are increasingly focusing on the sound quality of the side door assembly when closing a vehicle. The main factors affecting sound quality include door rigidity, door lock structure, and door sealing quality. When closing the door, a uniform and gradually disappearing amplitude indicates acceptable sound quality and easy door closure. Discontinuous amplitude or a sudden, high-pitched bounce at the end of the amplitude indicates unacceptable sound quality, with unwanted noise, and the door is difficult to close.

[0003] In existing technologies, many car models have problems such as doors that are difficult to close during the closing process, and sound and airflow diffuse within the side cavity of the vehicle body, resulting in discontinuous amplitude or sudden high bounce at the rear, which seriously affects the sound quality of the vehicle and the user's operating experience. Summary of the Invention

[0004] The purpose of this invention is to provide a structure and vehicle for improving the sound quality of a side door assembly when it is closed, which can effectively control impact noise, improve the sound quality when the side door is closed, and enhance the user experience.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a side door assembly closing sound quality improvement structure is provided, including a side door body and a vehicle body pillar. The side door body and the vehicle body pillar are locked by a door lock assembly. The upper end of the vehicle body pillar is connected to the roof side beam, and the lower end of the vehicle body pillar is connected to the sill beam. The interior of the vehicle body pillar has a through cavity that communicates with the roof side beam and the sill beam respectively. At least two sound-absorbing plates are provided in the through cavity, wherein the two sound-absorbing plates are located one above and one below the door lock assembly respectively. When the side door body is closed, the sound-absorbing plates are used to block the sound emitted by the door lock assembly from being transmitted upward or downward.

[0006] Compared with the prior art, the side door assembly closing sound quality improvement structure provided in this application embodiment provides a solution by setting two sound-absorbing plates in the through cavity of the door pillar. The noise generated by the door lock assembly during the closing process is blocked between the two sound-absorbing plates, preventing sound and airflow from spreading to the upper roof side beam or the lower door sill beam through the through cavity. By changing the diffusion direction of sound and airflow when the side door is closed and shortening the duration of sound, the high-frequency part of the closing sound is effectively controlled, thereby improving the sound quality when the side door is closed.

[0007] When improving the sound quality during the door closing process, the high-frequency components of the closing sound, which are an important part of the closing process, should be considered as a key factor. Secondly, the multiple impacts, vibrations, and other parts of the closing sound should also be considered.

[0008] A sound-absorbing plate structure is used to address the high-frequency components during the door closing process. This structure is suitable for the position where the side door body and the vehicle body pillar are adjacent, and is applicable to vehicles with both front and rear doors, as well as vehicles with only a front door.

[0009] By installing two sound-damping plates inside the B-pillar's through-cavity, the sound emitted during the door lock assembly's locking process is effectively blocked. Specifically, a sound-damping plate is installed on the upper part of the B-pillar near the roof edge beam, and another on the lower part of the B-pillar near the door sill beam. This effectively traps the sound in the central area of ​​the through-cavity, preventing sound from transmitting into the roof edge beam or door sill beam. Similarly, by installing two sound-damping plates inside the C-pillar's through-cavity, the sound emitted during the door lock assembly's locking process is effectively blocked.

[0010] In one possible implementation, the side door body includes an inner side door panel, an outer side door panel, and several reinforcing beams. A side door cavity is formed between the inner side door panel and the outer side door panel. The reinforcing beams are arranged in the side door cavity along the front-back direction, and adhesive is provided between the reinforcing beams and the outer side door panel.

[0011] To address the high-frequency components during the door closing process, adhesive is applied between the reinforcing beam and the outer side door panel to improve sound quality. Adhesive grooves are provided on the adjacent surfaces of the reinforcing beam and the outer side door panel, filled with adhesive to facilitate a reliable connection between them. This prevents vibrations and abnormal noises, thus improving the sound quality during the vehicle door closing process.

[0012] Based on this, CAE dent resistance analysis was used to verify the weak points of the side door body. When the side door body is closed, the airflow enters the side door cavity from the inside, and there is vibration and abnormal noise caused by insufficient rigidity of the side door outer panel. In addition, when the side door body is closed, the locking of the door lock assembly will also affect the vibration and abnormal noise of the side door outer panel. Therefore, it is necessary to reinforce the side door outer panel while meeting the dent resistance requirements.

[0013] In some embodiments, a reinforcing structure is also connected to the inner wall of the side door outer panel, located below the reinforcing beam in the vertical direction. Since the structural strength of the side door outer panel is generally lower where there is no reinforcing beam, reinforcement is necessary when the area in this region is large. The reinforcing structure needs to be installed in the areas of the side door outer panel that are not connected to the reinforcing beam with adhesive. The reinforcing structure has certain strength properties and can effectively improve the dent resistance of the side door outer panel. It can be selectively installed based on actual vehicle verification and vehicle model positioning.

[0014] In one possible implementation, a side door reinforcement plate and a pull wire are also provided inside the side door cavity. The pull wire is fixed to the side door reinforcement plate by a buckle, and several buckles are provided at intervals along the direction of the pull wire.

[0015] As another important factor in the closing process of the side door, abnormal noises caused by component vibration should be addressed by structural avoidance or the installation of fixed points. The side door cavity often contains cables for controlling door lock components or window components, and these cables inevitably rub against or collide with external components during the closing process.

[0016] The reinforcing plate installed inside the side door cavity serves two purposes: structurally strengthening the side door body and facilitating the installation and securing of components such as the pull cable and wiring harness. At the same time, special attention must be paid to the vibration issue that occurs during door closing when installing the pull cable.

[0017] When arranging the pull cord, its direction should be set according to the pulling direction requirements. When the pull cord is long, multiple clips can be used to reliably fix it at different points along its direction, avoiding impact noise caused by the pull cord colliding with the side door reinforcement plate, outer side door panel, or inner side door panel during the closing process, and preventing the sound quality during the closing process from being affected by the impact caused by the pull cord shaking.

[0018] When the pull cable is short, it can be secured without clips. Because short pull cables can cause impact noise when colliding with components such as the side door reinforcement plate, outer side door panel, or inner side door panel during closing, a flexible sleeve can be installed around the pull cable to create a flexible covering. When the pull cable comes into contact with external components during door closing, only the flexible sleeve makes contact, preventing impact noise and improving sound quality during closing.

[0019] In some embodiments, a flexible material tube is fitted around the outer periphery of the pull wire, and the outer wall of the flexible material tube flexibly contacts the side door reinforcement plate. The flexible material tube can be made of rubber or silicone, and should meet good flexibility requirements and have a certain degree of wear resistance to help extend the service life of the component.

[0020] In one possible implementation, a wiring harness is also provided inside the side door cavity. A protective sleeve is fitted around the outer periphery of the wiring harness, and the protective sleeve is connected to the side door reinforcement plate via snap-fit ​​connectors. Several snap-fit ​​connectors are spaced apart along the direction of the protective sleeve. For wiring harnesses used as electrical connection components, a structure similar to the aforementioned guy wire can also be used to improve sound quality. In some embodiments, the door lock assembly includes a latch disposed on the side door body and a latch disposed on the vehicle body pillar. The latch includes a rigid body and a plastic sleeve sleeved on the outside of the rigid body. A sound-absorbing buffer groove is provided through the plastic sleeve and is located on the outer periphery of the rigid body.

[0021] Abnormal noises caused by component vibration also include the following: During the closing process of the side door, the latch on the side door pillar may collide with the lock limit plate on the side door body, producing abnormal noise. In addition, the bolt will enter the half-lock and full-lock states when rotating. If the closing force is large, it will cause overtravel. The bolt will return due to overtravel, swinging back and forth within a certain range and colliding with the stop lever multiple times, causing abnormal noise.

[0022] Since the existing lock tongue adopts a structure combining a rigid body and a plastic sleeve, in order to avoid the abnormal noise caused by the above-mentioned collision action affecting the sound quality when closing the door, a sound-absorbing buffer groove is set on the plastic sleeve to reduce the impact noise of the door lock assembly.

[0023] The sound-absorbing buffer groove is set through the plastic sleeve plate surface and is located near the outer edge of the plastic groove. This avoids communication with the rigid body, so that when the latch locks with the buckle, it can form a less flexible contact with the stop lever, avoiding the large abnormal noise caused by the rigid impact between the two, which helps to improve the sound quality of the side door body during closing.

[0024] In some embodiments, the side door body includes an upper window frame located above the door glass, the upper window frame having a reinforcing step extending downward toward the inner side of the vehicle body, and the upper edge of the upper window frame bending outward toward the outer side of the vehicle body.

[0025] When controlling the impact during the closing process of the side door, the rigidity of the upper window frame also needs to be considered. This can be achieved by increasing the thickness of the plate at the upper window frame position or by changing the cross-section of the upper window frame.

[0026] Specifically, a reinforced step is installed on the upper window frame. The reinforced step is located on the side of the upper window frame closest to the glass and forms a step effect towards the central axis of the vehicle body. Without increasing the thickness of the upper window frame material, the rigidity of the upper window frame can be effectively improved, which helps to reduce the impact between the side door and the vehicle body during the closing process and improves the sound quality.

[0027] In one possible implementation, a sealing strip is provided on the outer edge of the side door body, and the sealing strip has vents facing either the inside or outside of the vehicle body. Sound quality is improved by using a sealing strip on the outer periphery of the side door body. The sealing strip not only improves the sealing performance of the structure but also reduces the impact between the side door body and the vehicle body. The vents on the sealing strip can be configured to face either inside or outside the vehicle, and the opening direction should be determined based on the closing speed and closing force of the side door body. When the vents face inside the vehicle, the exhaust sound during the closing process of the side door body is less audible; when the vents face outside the vehicle, the exhaust sound during the closing process of the side door body is also weaker, both of which can effectively improve sound quality to a certain extent.

[0028] The present invention also provides a vehicle including a side door assembly closing sound quality improvement structure. The vehicle, by installing two sound-damping plates inside the through cavity of the door pillar, isolates the noise generated by the door lock assembly during the closing process between the two sound-damping plates, preventing sound and airflow from diffusing through the through cavity to the upper roof side beam or the lower sill beam. By changing the direction of sound and airflow diffusion when the side door closes and shortening the duration of the sound, the high-frequency component of the closing sound is effectively controlled, thus improving the sound quality when the side door closes. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the structure for improving the closing sound quality of the side door assembly provided in an embodiment of the present invention (side door body omitted). Figure 2 Provided for embodiments of the present invention Figure 1 Exploded view of the sound-absorbing plate and mounting strip; Figure 3 This is a schematic diagram of the side door body in the side door assembly closing sound quality improvement structure provided in an embodiment of the present invention; Figure 4 This is an embodiment of the present invention. Figure 3 A partially enlarged structural diagram (side door reinforcement plate omitted); Figure 5 This is an enlarged structural schematic diagram of the reinforcing beam provided in an embodiment of the present invention; Figure 6 This is an embodiment of the present invention. Figure 3 A cross-sectional view of the upper middle window frame AA; Figure 7 A rear view schematic diagram of the side door assembly closing sound quality improvement structure provided in the embodiment of the present invention (side door reinforcement plate omitted). Figure 8 This is a schematic diagram of the exploded structure of the locking tongue provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the plastic sleeve provided in an embodiment of the present invention; Figure 10 This is an embodiment of the present invention. Figure 7 A structural diagram of the plastic sleeve from another angle; Figure 11 This is a schematic diagram of the rigid body provided in an embodiment of the present invention; Figure 12 This is a schematic diagram showing the amplitude at which the sound quality meets the requirements during the sound quality testing process. Figure 13 This is a schematic diagram of the amplitude of an amplitude that does not meet the requirements for sound quality during the sound quality testing process.

[0031] The following are the labeling elements in the figure: 1. Side door body; 11. Side door reinforcing plate; 12. Side door outer panel; 13. Reinforcing beam; 14. Reinforcing structure; 15. Upper window frame; 16. Reinforcing step; 17. Glue groove; 2. Body pillar; 21. Sound damping plate; 22. Mounting strip seat; 23. Frame; 24. Sound damping layer; 3. Lock tongue; 31. Rigid body; 32. Plastic sleeve; 33. Sound-absorbing buffer groove; 4. Sealing strip; 5. Pull cable; 51. Buckle; 52. Flexible material tube; 6. Wiring harness; 61. Protective sleeve; 62. Clip seat. Detailed Implementation

[0032] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0033] In the claims, description, and accompanying drawings of this invention, the terms "front" and "rear" refer to the front-rear direction of the vehicle body, "left" and "right" refer to the left-right direction of the vehicle body, and "upper" and "lower" refer to the vertical direction of the vehicle body. The term "inner" refers to the direction towards the central axis of the vehicle body, and the term "outer" refers to the direction away from the central axis of the vehicle body, wherein the central axis of the vehicle body is parallel to the front-rear direction of the vehicle body. Other directional terms, unless otherwise explicitly defined, such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "clockwise," "counterclockwise," "high," and "low," are used to indicate orientation or positional relationships based on the orientation and positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description. They 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, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0034] Please refer to the following: Figures 1 to 11 The following describes the side door assembly closing sound quality improvement structure and vehicle provided by the present invention. The side door assembly closing sound quality improvement structure includes a side door body 1 and a vehicle body pillar 2. The side door body 1 and the vehicle body pillar 2 are locked together by a door lock assembly. The upper end of the vehicle body pillar 2 is connected to the roof side beam, and the lower end of the vehicle body pillar 2 is connected to the sill beam. The interior of the vehicle body pillar 2 has a through cavity that communicates with the roof side beam and the sill beam respectively. At least two sound-damping plates 21 are provided in the through cavity. The two sound-damping plates 21 are located one above and one below the door lock assembly respectively. When the side door body 1 is closed, the sound-damping plates 21 are used to block the sound emitted by the door lock assembly from being transmitted upward or downward.

[0035] Compared with the prior art, the side door assembly closing sound quality improvement structure provided in this embodiment improves the sound quality of the side door assembly by setting two upper and lower sound-absorbing plates 21 in the through cavity of the door pillar. The noise generated by the door lock assembly during the closing process is blocked between the two sound-absorbing plates 21, preventing sound and airflow from spreading to the upper roof side beam or the lower door sill beam through the through cavity. By changing the diffusion direction of sound and airflow when the side door is closed and shortening the duration of sound, the high-frequency part of the closing sound is effectively controlled, thereby improving the sound quality when the side door is closed.

[0036] In this embodiment, when improving the sound quality during the door closing process, the high-frequency component of the closing sound, as an important part of the closing process, should be considered as a key factor. Secondly, the multiple impacts, vibrations, and other components in the closing sound should also be considered.

[0037] After the side door assembly is assembled into the vehicle body, the amplitude is measured using sound quality testing equipment. Testing points are set at the center of the side door assembly and near the door lock. The equipment collects the waveform of the amplitude, and the sound quality of the vehicle is determined based on the waveform.

[0038] For details, please see Figure 12 The image shows a waveform indicating that the sound quality meets the requirements during the sound quality testing process. At this point, the amplitude of the side door assembly gradually and uniformly disappears, indicating that the vehicle's sound quality meets the requirements. Please refer to [link / reference]. Figure 13 The image shows a graphic of a sound quality failure during the sound quality test. At this time, the amplitude of the side door assembly suddenly bounces high at the rear, indicating that the amplitude is discontinuous, which means that the vehicle's sound quality does not meet the requirements.

[0039] A sound-absorbing plate 21 is used to address the high-frequency components during the door closing process. This structure is suitable for vehicles with both front and rear doors, as well as vehicles with only a front door. Taking a common vehicle model as an example, common models have front doors, rear doors, B-pillars, and C-pillars. The most common use of door lock components is between the front door and the B-pillar, and between the rear door and the C-pillar. It should be noted that at least two sound-damping panels 21 are installed within the through-cavity of the B-pillar, which can block sound transmitted to the upper roof side beam and the lower door sill beam. Specifically, they can be configured in two, three, or four forms to achieve effective sound blocking.

[0040] Specifically, by installing two sound-damping plates 21 inside the through cavity of the B-pillar, the sound emitted during the locking process of the door lock assembly when closing the door is effectively blocked. That is, a sound-damping plate 21 is installed at the upper part of the B-pillar near the roof side beam, and a sound-damping plate 21 is installed at the lower part of the B-pillar near the door sill beam. This effectively traps the sound in the middle area of ​​the through cavity, preventing the sound from being transmitted into the cavity of the roof side beam or door sill beam.

[0041] Similarly, by setting two sound-absorbing plates 21 inside the through cavity of the C-pillar, the sound emitted during the locking process of the door lock assembly is effectively blocked. That is, a sound-absorbing plate 21 is set at the upper part of the C-pillar near the roof side beam, and a sound-absorbing plate 21 is set at the lower part of the C-pillar near the door sill beam. This effectively traps the sound in the middle area of ​​the through cavity, preventing the sound from being transmitted into the cavity of the roof side beam or door sill beam.

[0042] To facilitate the installation of the sound-damping panel 21, a mounting strip 22 can be installed inside the through cavity of the vehicle body pillar 2. The sound-damping panel 21 adopts a combination of a frame 23 and a sound-damping layer 24. The frame 23 is fitted around the outer periphery of the sound-damping layer 24, providing structural support. The sound-damping layer 24 has good sound insulation effect, which can prevent sound from being transmitted to the upper roof side beam or the lower door sill beam of the vehicle body.

[0043] Specifically, when the sound-absorbing plate 21 is installed in the through cavity of the B-pillar or C-pillar, it should meet the requirements for sound isolation. The surface of the sound-absorbing plate 21 can be set at an acute angle or a right angle with the extension direction of the through cavity, as long as the sound isolation requirement is met.

[0044] To further improve the sound barrier performance, sealing rings and other components can be installed on the outer periphery of the sound barrier plate 21 to improve the sealing performance between the sound barrier plate 21 and the inner wall of the through cavity, ensuring effective sound barrier and further improving the sound quality during the closing process of the front or rear door.

[0045] At the same time, as another factor affecting the high-frequency part of the closing sound, the internal structure of the side door body 1 also affects the sound quality during the closing process.

[0046] In one possible implementation, the aforementioned feature side door body 1 can be adopted as follows: Figure 3 , Figure 6 and Figure 7 The structure shown. See also Figure 3 , Figure 6 and Figure 7 The side door body 1 includes an inner side door panel, an outer side door panel 12, and several reinforcing beams 13. A side door cavity is formed between the inner side door panel and the outer side door panel 12. The reinforcing beams 13 are arranged in the side door cavity along the front-back direction. Adhesive is provided between the reinforcing beams 13 and the outer side door panel 12.

[0047] In this embodiment, the side door body 1 is composed of an inner side door panel, an outer side door panel 12, and a reinforcing beam 13. The side door cavity formed between the inner and outer side door panels 12 is used for the installation of components such as the reinforcing beam 13, door lock, pull cable 5, and wiring harness 6. By setting the reinforcing beam 13 in the side door cavity, the structural strength of the side door body 1 can be effectively improved. Multiple reinforcing beams 13 can be set in the side door cavity according to strength and safety requirements. The reinforcing beams 13 extend forward or upward and can adopt different structures such as plate or tubular to provide good support. The setting of the reinforcing beam 13 effectively enhances the side impact resistance of the side door body 1.

[0048] In order to control the high-frequency part of the door closing sound of the side door outer panel 12, it is necessary to avoid the influence of relative vibration between the reinforcing beam 13 and the side door outer panel 12. A glue groove 17 is provided on the adjacent panel surface of the reinforcing beam 13 and the side door outer panel 12. The glue groove 17 is coated with adhesive to facilitate a reliable connection between the reinforcing beam and the side door outer panel 12, avoid vibration between the two and abnormal noise, and help improve the sound quality during the vehicle door closing process.

[0049] For the plate-shaped reinforcing beam 13, multiple adhesive grooves 17 of different shapes can be provided on the plate surface of the reinforcing beam 13 to facilitate the application of adhesive and achieve multi-point connection between the reinforcing beam 13 and the side outer panel, minimizing abnormal noise during the closing process. For the tubular reinforcing beam 13, multiple adhesive grooves 17 of different shapes can be provided on the peripheral wall adjacent to the side outer panel 12 to facilitate the application of adhesive and achieve a reliable connection between the reinforcing beam 13 and the side outer panel, preventing abnormal noise during the closing process.

[0050] Specifically, the glue groove 17 can adopt a long strip structure, with the long side of the glue groove 17 set along the extension direction of the reinforcing beam 13. Multiple glue grooves 17 can be set at intervals along the extension direction of the same reinforcing beam 13, so that the reinforcing beam 13 forms a connection with the inner wall of the side door outer panel 12 in the entire length direction, effectively avoiding the problem of vibration of the side door outer panel 12 during the closing process, and helping to improve the sound quality during the closing process.

[0051] In some embodiments, the aforementioned feature side door outer panel 12 can be adopted as follows: Figure 6 The structure shown. See also Figure 6 A reinforcing structure 14 is also connected to the inner wall of the outer panel 12 of the side door. In the vertical direction, the reinforcing structure 14 is located below the reinforcing beam 13.

[0052] In this embodiment, CAE dent resistance analysis is used to verify the weak points of the side door body 1. When the side door body 1 is closed, the airflow enters the side door cavity of the side door body 1 from the inside (that is, some of the side door body cavity near the central axis of the vehicle body). Due to the insufficient rigidity of the side door outer panel 12, vibration and abnormal noise will occur. In addition, when the side door body 1 is closed, the locking of the door lock assembly will also affect the vibration and abnormal noise of the side door outer panel 12. Therefore, the side door outer panel 12 needs to be reinforced under the premise of meeting the dent resistance requirements.

[0053] Since the structural strength of the side door outer panel 12 is generally lower in areas without reinforcing beams 13, reinforcement structures 14 are needed when the area is large. Reinforcing structures 14 are installed on the inner wall of the side door outer panel 12, specifically in areas where the side door outer panel 12 and reinforcing beams 13 are not connected by adhesive. Reinforcing structures 14 possess certain strength properties and can effectively improve the dent resistance of the side door outer panel 12. Their installation or removal can be determined through real-vehicle verification and vehicle model positioning.

[0054] Specifically, for areas on the outer side door panel 12 with an area greater than 150cm × 200cm, a reinforcing structure 14 should be provided to improve the dent resistance of these areas. The dent resistance of the outer side door panel 12 without the reinforcing structure 14 is 30N / mm; while the dent resistance of the outer side door panel 12 with the reinforcing structure 14 is 40N / mm. By providing the reinforcing structure 14 on the inner side of the outer side door panel 12, the dent resistance of the outer side door panel 12 can be effectively improved, as can its structural rigidity, thus achieving effective control of high-frequency components during the closing process. The reinforcing structure 14 can be made of reinforcing film, reinforcing beams, or reinforcing plates, etc., all of which can structurally strengthen the corresponding positions of the outer side door panel 12, thereby improving its dent resistance.

[0055] In one possible implementation, the aforementioned characteristic side door cavity can be adopted as follows: Figure 3 , Figure 4 and Figure 6 The structure shown. See also Figure 3 , Figure 4 and Figure 6 The side door cavity is also provided with a side door reinforcing plate 11 and a pull line 5. The pull line 5 is fixed to the side door reinforcing plate 11 by a buckle 51. Several buckles 51 are provided at intervals along the direction of the pull line 5.

[0056] In this embodiment, as another important factor in the closing process of the side door body 1, the abnormal response caused by component vibration is solved by structural avoidance or the installation of fixed points. The side door cavity often contains a pull cable 5 for controlling the door lock assembly or window assembly. During the closing process of the side door body 1, the pull cable 5 inevitably scrapes or collides with the surrounding components, which in turn affects the sound quality during the closing process.

[0057] The reinforcing plate installed inside the side door cavity serves two purposes: firstly, it strengthens the structure of the side door body 1, and secondly, it facilitates the installation and fixation of components such as the pull cable 5 and the wiring harness 6. At the same time, special attention needs to be paid to the vibration issue that occurs during the door closing process when installing the pull cable 5.

[0058] When arranging the pull cord 5, its direction should be set according to the pulling direction requirements. When the pull cord 5 has a large length, multiple clips 51 can be set to reliably fix it at different points, effectively fixing the pull cord 5 with the clips 51 to the side door reinforcing plate 11. This avoids impact noise caused by the pull cord 5 colliding with the side door reinforcing plate 11, the outer side door panel 12, or the inner side door panel during the closing process of the side door body 1, and avoids the impact caused by the pull cord 5 shaking, which affects the sound quality during the closing process.

[0059] Specifically, the buckle 51 has a fitting hole that can be sleeved on the outer periphery of the pull wire 5, and a locking hole is provided on the side door reinforcing plate 11 to engage with the buckle 51. During installation, the buckle 51 is first sleeved on the outer periphery of the pull wire 5 so that the pull wire 5 is located in the fitting hole, and then the buckle 51 is locked and fixed in the locking hole of the side door reinforcing plate 11. The cooperation between the buckle 51 and the locking hole effectively limits and fixes the corresponding position of the pull wire 5. During the closing process of the side door body 1, it avoids the impact noise caused by the excessive length of the pull wire 5 between it and the side door reinforcing plate 11, the outer side door panel 12, or the inner side door panel.

[0060] In some embodiments, the aforementioned feature wire 5 can be adopted as follows: Figure 3 , Figure 4 and Figure 6 The structure shown. See also Figure 3 , Figure 4 and Figure 6 A flexible material tube 52 is sleeved around the outer periphery of the pull wire 5, and the outer wall of the flexible material tube 52 is in flexible contact with the side door reinforcing plate 11.

[0061] In this embodiment, when the pull cord 5 is short, it can be fixed without the clip 51. Since a short pull cord 5 may cause impact noise when colliding with components such as the side door reinforcing plate 11, the outer side door panel 12, or the inner side door panel during the closing process of the side door body 1, a flexible material sleeve can be installed around the pull cord 5 to form a flexible covering layer. When the pull cord 5 contacts the surrounding components during the closing process of the side door body 1, only the flexible material sleeve makes flexible contact with the surrounding components, avoiding impact noise and improving the sound quality during the closing process.

[0062] Specifically, flexible sleeves can be made of rubber or silicone tubing, and should meet good flexibility requirements and have a certain degree of wear resistance to help extend the service life of the components.

[0063] In some embodiments, see Figure 3 , Figure 4 and Figure 6 The side door cavity is also equipped with a wire harness 6, and a protective sleeve 61 is fitted around the outer periphery of the wire harness 6. The protective sleeve 61 is connected to the side door reinforcing plate 11 through a snap-fit ​​seat 62. Several snap-fit ​​seats 62 are provided at intervals along the direction of the protective sleeve 61. In this embodiment, for some electrical components, a wiring harness 6 is also provided for electrically connecting the aforementioned components. The wiring harness 6 and the pull wire 5 should be handled with care to avoid impact noise between the wiring harness 6 and the outer peripheral components during the closing of the side door body 1. The impact noise is eliminated by providing a protective sleeve 61 around the wiring harness 6. The protective sleeve 61 can be made of flexible materials such as rubber or silicone tubing, allowing for flexible contact with components such as the side door reinforcing plate 11, the outer side door panel 12, or the inner side door panel.

[0064] Simultaneously, the snap-fit ​​bracket 62 can be used to snap and fix the longer wire harness 6 at different positions. The snap-fit ​​bracket 62 has a through hole for the wire harness 6 to pass through, and the side door reinforcing plate 11 can be provided with snap-fit ​​holes that engage with the snap-fit ​​bracket 62. During installation, first, the snap-fit ​​bracket 62 is placed around the outer periphery of the wire harness 6, so that the wire harness 6 is located in the through hole, and then the snap-fit ​​bracket 62 is engaged with the snap-fit ​​hole to effectively limit and fix the different positions of the wire harness 6. During the closing process of the side door body 1, the impact noise caused by the excessive length of the wire harness 6 between it and the side door reinforcing plate 11, the outer side door panel 12, or the inner side door panel is avoided, thereby improving the sound quality of the side door body 1 during the closing process.

[0065] In some embodiments, the aforementioned feature lock component may employ, as follows: Figures 8 to 11 The structure shown. See also Figures 8 to 11 The door lock assembly includes a latch 3 on the side door body 1 and a latch on the vehicle body pillar 2. The latch 3 includes a rigid body 31 and a plastic sleeve 32 sleeved on the outside of the rigid body 31. A sound-absorbing buffer groove 33 is provided through the plastic sleeve 32 and is located on the outer periphery of the rigid body 31.

[0066] In this embodiment, the door lock assembly is locked in place by a latch 3 and a latch. The latch 3 is mounted on the side door body 1, and the latch is mounted on the side door pillar. In vehicles with front and rear doors, the latch 3 is located on the rear side of the front door, and a latch that engages with the latch 3 is located on the front side of the B-pillar. The front door and the B-pillar are effectively locked by the interaction of the latch 3 and the latch. Similarly, the latch 3 is located on the rear side of the rear door, and a latch that engages with the latch 3 is located on the front side of the C-pillar. The rear door and the C-pillar are effectively locked by the interaction of the latch 3 and the latch.

[0067] To investigate the impact of the door lock assembly on the sound quality during the closing process of the side door body 1, a real-vehicle test was conducted, controlling the closing speed to less than 2 m / s. During the closing process of the side door body 1, the latch on the side door pillar is prone to colliding with the lock limit plate on the side door body 1, generating abnormal noise. In addition, the latch 3 enters a half-lock and full-lock state when rotating. If the closing force is large, it will cause overtravel, and the latch 3 will return due to overtravel, swinging back and forth within a certain range and colliding with the shift lever multiple times, causing abnormal noise.

[0068] Since the existing latch 3 adopts a structure combining a rigid body 31 and a plastic sleeve 32, in order to avoid the abnormal noise caused by the above-mentioned collision action affecting the sound quality when closing the door, a sound-absorbing buffer groove 33 is set on the plastic sleeve 32 to reduce the impact noise of the door lock assembly.

[0069] Specifically, the rigid body 31 is an arc-shaped component, and the plastic sleeve 32 is fitted onto the rigid body 31. The plastic sleeve 32 has a side opening on the outer periphery of the rigid body 31 to facilitate installation and mating. After installation, the two components can be effectively limited by interference fit, and the reliability of the assembly can also be ensured by auxiliary methods such as adhesive bonding.

[0070] The sound-absorbing buffer groove 33 is set through the surface of the plastic sleeve 32 and is located near the outer edge of the plastic groove. This avoids communication with the rigid body 31, so that when the latch 3 is locked with the latch, it can form a contact with the stop lever with a small degree of flexibility, avoiding the large abnormal noise caused by the rigid impact between the two, and helping to improve the sound quality of the side door body 1 during the closing process.

[0071] Based on the collision requirements of the locking tongue 3 and the gear lever during use, different sizes of noise-absorbing buffer grooves 33 are designed. The noise-absorbing buffer groove 33 can be set as a long strip structure, set on the plastic sleeve 32, and extended along the extension direction of the rigid body 31. The part of the noise-absorbing buffer groove 33 away from the rigid body 31 contacts the gear lever, avoiding the collision sound source caused by rigid impact, and improving the sound quality when the side door body 1 is closed.

[0072] Plastic materials refer to materials that are plastic under normal temperature and static load. They can be processed or formed by die forging, stamping, extrusion, etc., and have strong impact and vibration resistance. Examples include low carbon steel, copper, aluminum, plastics, and rubber. These materials have good plastic deformation properties and can avoid collisions with rigid components.

[0073] In this embodiment, the plastic sleeve 32 is made of plastic, a material made of high molecular polymers, which is lightweight, durable, and highly malleable. There are many types of plastics, including polyethylene, polypropylene, and polyurethane, each with its unique properties and uses. They are widely used in daily life and industry, such as packaging, containers, electronic products, and building materials. The plastic sleeve 32, made of plastic, fully utilizes the plasticity of plastic. By fitting the plastic sleeve 32 around the rigid body 31, the locking tongue 3 forms a buffer and shock absorption effect when it contacts the shift lever, avoiding the adverse effects of rigid impact on sound quality and improving the sound quality when the side door body 1 is closed.

[0074] In some embodiments, the aforementioned feature side door body 1 can be adopted as follows: Figure 3 and Figure 5 The structure shown. See also Figure 3 and Figure 5 The side door body 1 includes an upper window frame 15 located above the door glass. The upper window frame 15 is provided with a reinforcing step 16 extending downward toward the inner side of the vehicle body. The upper edge of the upper window frame 15 bends and extends outward toward the outer side of the vehicle body.

[0075] In this embodiment, in order to control the impact part during the closing process of the side door body 1, it is also necessary to consider the stiffness of the upper window frame 15. The stiffness can be improved by increasing the thickness of the plate at the position of the upper window frame 15, or by changing the cross section of the upper window frame 15.

[0076] Specifically, a reinforcing step 16 is provided on the upper window frame 15. The reinforcing step 16 is located on the side of the upper window frame 15 closest to the glass and forms a step effect towards the central axis of the vehicle body. Without increasing the thickness of the upper window frame 15 material, the rigidity of the upper window frame 15 can be effectively improved, which facilitates the reduction of the impact between the side door body 1 and the vehicle body during the closing process and improves the sound quality.

[0077] In one possible implementation, the aforementioned feature side door body 1 can be adopted as follows: Figure 3 The structure shown. See also Figure 3 The outer edge of the side door body 1 is also provided with a sealing strip 4, and the sealing strip 4 has an exhaust hole facing the inside or outside of the vehicle body.

[0078] In this embodiment, sound quality can be improved by setting a sealing strip 4 around the outer periphery of the side door body 1. The sealing strip 4 not only improves the sealing performance of the structure, but also reduces the impact between the side door body 1 and the vehicle body.

[0079] Based on this, the sealing strip 4 is provided with an exhaust hole, which can be set to face either inwards or outwards. The opening direction should be determined in combination with the closing speed and closing force of the side door body 1. When the exhaust hole faces inwards, the exhaust sound during the closing process of the side door body 1 is not easily heard. When the exhaust hole faces outwards, the exhaust sound during the closing process of the side door body 1 is also weaker, both of which can effectively improve the sound quality to a certain extent.

[0080] In addition, a suitable coating can be applied to the surface of the sealing strip 4 according to the characteristics of the car body paint film. This can effectively protect the sealing strip 4 body and also achieve effective connection with the car body, improving the car body's aesthetics.

[0081] In addition to improving the sound quality of the side door body 1 during the closing process through the above-mentioned structure, improvements can also be made in the following aspects. First, the pressure relief valve can be improved. To avoid noise generated by the pressure relief valve due to airflow discharge, noise reduction can be achieved by setting sound-absorbing pads at the corresponding positions, thus avoiding the impact of the pressure relief valve on the sound quality when it operates.

[0082] Based on this, the movement process of the limiter can be designed and improved. By verifying and adjusting the opening and closing force during the vehicle installation process, the impact of the limiter's movement on the sound quality can be reduced. Through the above methods, the sound quality of the side door body 1 during the closing process can be effectively improved, thereby enhancing the passenger's driving experience.

[0083] Based on the same inventive concept, this application also provides a vehicle, which includes a side door assembly closing sound quality improvement structure. The vehicle, by installing two sound-damping plates 21 inside the through cavity of the door pillar, blocks the noise generated by the door lock assembly during the closing process between the two sound-damping plates 21, preventing sound and airflow from diffusing through the through cavity to the upper roof side beam or the lower door sill beam. By changing the direction of sound and airflow diffusion when the side door closes and shortening the duration of the sound, the high-frequency part of the closing sound is effectively controlled, thus improving the sound quality when the side door closes.

[0084] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A structure for improving the sound quality when the side door assembly is closed, characterized in that: The device includes a side door body (1) and a vehicle body pillar (2). The side door body (1) and the vehicle body pillar (2) are locked together by a door lock assembly. The upper end of the vehicle body pillar (2) is connected to the roof side beam, and the lower end of the vehicle body pillar (2) is connected to the sill beam. The interior of the vehicle body pillar (2) has a through cavity that communicates with the roof side beam and the sill beam respectively. At least two sound-absorbing plates (21) are provided in the through cavity. The two sound-absorbing plates (21) are located one above and one below the door lock assembly. When the side door body (1) is closed, the sound-absorbing plates (21) are used to block the sound emitted by the door lock assembly from being transmitted upward or downward.

2. The side door assembly closing sound quality improvement structure as described in claim 1, characterized in that, The side door body (1) includes an inner side door panel, an outer side door panel (12), and several reinforcing beams (13). A side door cavity is formed between the inner side door panel and the outer side door panel (12). The reinforcing beams (13) are arranged in the side door cavity along the front-back direction. Adhesive is provided between the reinforcing beams (13) and the outer side door panel (12).

3. The side door assembly closing sound quality improvement structure as described in claim 2, characterized in that, A reinforcing structure (14) is also connected to the inner wall of the outer panel (12) of the side door. In the vertical direction, the reinforcing structure (14) is located below the reinforcing beam (13).

4. The side door assembly closing sound quality improvement structure as described in claim 2, characterized in that, The side door cavity is also provided with a side door reinforcing plate (11) and a pull line (5). The pull line (5) is fixed to the side door reinforcing plate (11) by a buckle (51). Several buckles (51) are provided at intervals along the direction of the pull line (5).

5. The side door assembly closing sound quality improvement structure as described in claim 4, characterized in that, The pull wire (5) is fitted with a flexible material tube (52) around its outer periphery, and the outer wall of the flexible material tube (52) is in flexible contact with the side door reinforcing plate (11).

6. The side door assembly closing sound quality improvement structure as described in claim 4, characterized in that, The side door cavity is also provided with a wire harness (6), and a protective sleeve (61) is provided around the outer periphery of the wire harness (6). The protective sleeve (61) is connected to the side door reinforcing plate (11) through a snap-fit ​​seat (62). Several snap-fit ​​seats (62) are provided at intervals along the direction of the protective sleeve (61).

7. The side door assembly closing sound quality improvement structure as described in claim 1, characterized in that, The door lock assembly includes a latch (3) disposed on the side door body (1) and a latch disposed on the vehicle body pillar (2). The latch (3) includes a rigid body (31) and a plastic sleeve (32) sleeved on the outside of the rigid body (31). A sound-absorbing buffer groove (33) is provided through the plastic sleeve (32), and the sound-absorbing buffer groove (33) is located on the outer periphery of the rigid body (31).

8. The side door assembly closing sound quality improvement structure as described in any one of claims 1-7, characterized in that, The side door body (1) includes an upper window frame (15) located above the door glass. The upper window frame (15) is provided with a reinforcing step (16) extending downward toward the inner side of the vehicle body. The upper edge of the upper window frame (15) bends and extends outward toward the outer side of the vehicle body.

9. The side door assembly closing sound quality improvement structure as described in any one of claims 1-7, characterized in that, The outer edge of the side door body (1) is also provided with a sealing strip (4), and the sealing strip (4) has an exhaust hole facing the inside or outside of the vehicle body.

10. A vehicle, characterized in that, The side door assembly closing sound quality improvement structure includes any one of claims 1-9.

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