Foaming structure and vehicle

Abstract

The utility model provides a foaming structure and a vehicle and relates to the technical field of vehicle parts, the foaming structure comprises a mounting unit and a foaming unit arranged on the mounting unit, the mounting unit comprises a mounting seat, a sliding part arranged on the mounting seat in a sliding mode and a sliding driving part in transmission connection with the sliding part, and the foaming unit is arranged on the mounting seat. The foaming unit is arranged on the sliding part and can expand after being heated, the sliding driving part drives the sliding part, the sliding part can move from the position close to the mounting base to the position away from the mounting base, and the foaming unit can abut against the side wall of the mounting cavity. According to the foaming structure, the sliding part can slide relative to the mounting seat, the foaming unit is aligned to an ideal mounting position, and the sliding driving part drives the foaming unit to move to the ideal mounting position, so that the mounting process can be greatly simplified, the mounting efficiency is improved, and the foaming structure also has certain adjustment and adaptability; and mounting cavities with different shapes and sizes can be better adapted.

Description

Technical Field

[0001] This utility model relates to the field of vehicle component technology, and in particular to a foaming structure. Furthermore, this utility model also relates to vehicles using this foaming structure. Background Technology

[0002] With the continuous development of automotive technology, foam materials are being used more and more widely in vehicle noise reduction and sound insulation, bringing more innovation and development opportunities to the automotive manufacturing industry. In existing vehicles, for example, the mounting cavities in the side panels are typically filled with foam materials to achieve effective noise reduction and sound insulation, thereby providing passengers with a quieter riding environment.

[0003] However, the design of the vehicle side panel needs to meet the requirements of both appearance aesthetics and interior passenger space. This results in the mounting cavity inside the vehicle side panel often having irregular shapes and varying sizes, which poses certain challenges to noise reduction and sound insulation treatment.

[0004] Although foamed materials possess a certain degree of fluidity and filling ability, allowing them to adapt well to installation cavities of various shapes and sizes, the extent to which the foamed material can flow and fill is limited by its initial installation location. Due to limitations such as the varying shapes and sizes of installation cavities, filling different cavities with foamed material typically requires designing foam skeletons of various shapes, resulting in high design and production costs. However, without designing individual foam skeletons, it is difficult to install the foamed material in the ideal position, thus failing to achieve the desired filling effect and limiting the foamed material's noise reduction and sound attenuation functions. Utility Model Content

[0005] In view of this, the present invention aims to provide a foaming structure to facilitate the installation of the foaming unit into the mounting cavity.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A foam structure for filling an installation cavity, the foam structure including an installation unit and foam units disposed on the installation unit;

[0008] The mounting unit includes a mounting base, a sliding part slidably disposed on the mounting base, and a sliding drive part pulsatingly connected to the sliding part;

[0009] The foaming unit is disposed on the sliding part, and the foaming unit can expand when heated;

[0010] The sliding drive unit drives the sliding part, which can move from a position close to the mounting base to a position away from the mounting base, and can cause the foaming unit to abut against the side wall of the mounting cavity.

[0011] Furthermore, there are multiple sliding parts, and each foaming unit corresponds to one of the sliding parts; the multiple sliding parts are respectively connected to the sliding driving part, and the multiple sliding parts are driven by the sliding driving part, so that they can slide simultaneously relative to the mounting base.

[0012] Furthermore, the sliding drive unit includes a drive member rotatably mounted on the mounting base. The sliding drive unit is connected to multiple sliding parts via the drive member, and the sliding directions of the multiple sliding parts are all arranged intersecting the rotation center of the drive member.

[0013] Furthermore, the mounting units are two units arranged at intervals along the rotation center of the drive member. The two mounting seats are connected by a first connecting part, the sliding parts corresponding to the positions on the two mounting units are connected by a second connecting part, and the foaming units corresponding to the positions on the two mounting units are connected together and disposed on the corresponding sliding parts through the second connecting part.

[0014] Furthermore, the first connecting part includes a connecting rod connecting the two mounting seats, and the second connecting part includes a connecting plate connecting the two sliding parts; the connecting plate has an arc-shaped cross-section and is covered with multiple openings.

[0015] Furthermore, the driving component includes a driving disk rotatably mounted on the mounting base. The driving disk and each of the sliding portions are connected by a guide structure. Each guide structure includes a guide groove on the driving disk and a guide post on the sliding portion. The guide post is inserted into the guide groove.

[0016] Furthermore, the sliding drive part also includes a drive wheel rotatably mounted on the mounting base, and the drive wheel is meshed with the drive member; and / or, the drive member is rotatably mounted on the mounting base via a bearing, and a gripping part is provided on the side of the drive member facing away from the mounting base, and the gripping part is arranged close to the bearing.

[0017] Furthermore, the driving component includes a driving ring rotatably disposed on the mounting base, and a plurality of driving wheels meshing with the driving ring; the plurality of driving wheels correspond one-to-one with the plurality of sliding portions, and the corresponding driving wheel meshes with the sliding portion.

[0018] Furthermore, the mounting base is provided with a sliding groove, and the sliding part includes a sliding rod embedded in the sliding groove, with the foaming unit located at the end of the sliding rod away from the mounting base.

[0019] Compared with the prior art, this utility model has the following advantages:

[0020] The foaming structure described in this utility model mainly comprises an installation unit and a foaming unit. The foaming unit is the main functional part of the structure, used to achieve better sound insulation and noise reduction after heating and expansion. The installation unit is designed to ensure the foaming unit can be installed within the installation cavity. Because its sliding part can slide relative to the mounting base, the foaming unit is aligned with the ideal installation position, and the sliding drive part propels the foaming unit to the ideal installation position, greatly simplifying the installation process and improving installation efficiency. Furthermore, due to the presence of the sliding part and the sliding drive part, this foaming structure also has a certain degree of adjustability and adaptability, better adapting to installation cavities of different shapes and sizes, thus facilitating the foaming unit's noise reduction function.

[0021] The design incorporates multiple sliding parts, each connected to a sliding drive unit. The simultaneous sliding of these parts allows for synchronous operation of all sliding parts with just one drive unit, improving installation accuracy and efficiency. Furthermore, the multiple sliding parts can simultaneously contact and fix with the sidewalls of the mounting cavity at multiple points, enhancing the flexibility and stability of the foamed structure during installation.

[0022] The sliding drive is configured as a drive component that is rotatably arranged on the mounting base. It is connected to multiple sliding parts respectively, and the sliding direction is arranged to intersect the rotation center of the drive component. This design facilitates the arrangement of multiple sliding parts and makes more efficient use of the space on the mounting base.

[0023] By arranging two mounting units spaced apart along the rotation center of the drive component, and setting a first connecting part and a second connecting part between the two mounting units, and connecting the foaming units at corresponding positions together, the arrangement of each component is convenient. This facilitates the arrangement of longer foaming units and ensures sufficient stability and robustness of the foaming units after installation, enabling the foam structure to achieve better acoustic performance within the mounting cavity. The first connecting part uses a connecting plate, while the second connecting part uses a connecting plate with an arc-shaped cross-section, resulting in a simpler structure and easier assembly.

[0024] Furthermore, the driving component adopts a drive disk that is rotatably mounted on the mounting base, and is connected to each sliding part through a guide structure. The guide structure includes a guide groove and a guide post, which is convenient for processing and assembly, and also helps to ensure the stability and synchronization of the foam structure during installation.

[0025] By introducing a drive wheel into the sliding drive section and making the drive wheel mesh with the drive component, the efficiency and stability of the transmission are improved. Compared with the structure that does not have a drive wheel to directly drive the drive component, the structure using a drive wheel makes it easier to control the sliding speed of the sliding section.

[0026] Mounting the drive component on a bearing and providing a convenient grip helps improve transmission efficiency. On one hand, the use of bearings reduces friction and wear, allowing the drive component to rotate more smoothly; on the other hand, the grip makes it easier for users to operate the drive component, thus improving transmission efficiency and accuracy.

[0027] The drive unit includes a drive ring rotatably mounted on a mounting base, and multiple drive wheels meshing with the drive ring. Each drive wheel is connected to a sliding part, and the driving force is transmitted to the sliding part through the meshing connection. This design provides precise and reliable power transmission and control functions.

[0028] A groove is designed on the mounting base to provide a stable sliding path for the sliding part, which is set as a sliding rod to achieve a tight fit and fixation between the foaming unit and the side wall of the mounting cavity. In particular, the thermal expansion characteristics of the foaming unit can enhance the stability of the mounting unit and further improve the noise reduction effect.

[0029] Another objective of this invention is to provide a vehicle having the foamed structure described above.

[0030] The vehicle described in this utility model, by applying the aforementioned foaming structure, facilitates the installation of the foaming unit in an ideal position, thereby enabling the foaming unit to exert excellent sound insulation and noise reduction performance after heating and expansion, thus providing a quiet riding environment for passengers. Attached Figure Description

[0031] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0032] Figure 1 This is an exemplary structural diagram of the foaming structure described in Embodiment 1 of this utility model;

[0033] Figure 2 for Figure 1 A schematic diagram of the structure shown, in which the sliding part slides to its limit position away from the center of the mounting base;

[0034] Figure 3 for Figure 1 A schematic diagram of the longitudinal section of the structure shown;

[0035] Figure 4 for Figure 1 The diagram shown is a schematic of the structure without the foaming unit assembled.

[0036] Figure 5 This is an exemplary structural diagram of the installation unit described in Embodiment 1 of this utility model;

[0037] Figure 6 for Figure 5 A schematic diagram of the structure in which the sliding part slides to its limit position away from the center of the mounting base;

[0038] Figure 7 This is a schematic diagram illustrating a sliding groove structure of the mounting base described in Embodiment 1 of this utility model;

[0039] Figure 8 This is an exemplary cross-sectional view of the installation unit described in Embodiment 1 of this utility model;

[0040] Figure 9 This is an exemplary structural diagram of the installation unit described in Embodiment 2 of this utility model;

[0041] Figure 10 For along Figure 9 Sectional view of line AA in the middle;

[0042] Figure 11 This is an exemplary structural diagram of the foaming structure described in Embodiment 1 of this utility model under application conditions.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. First connecting part; 2. Mounting unit; 3. Mounting cavity; 4. Rear side outer sheet metal; 5. Wheel cover outer sheet metal; 6. Wheel cover inner sheet metal; 7. Second connecting part;

[0045] 101. Shell; 102. Filler;

[0046] 1011. Sound transmission hole;

[0047] 201. Mounting base; 202. Sliding part; 203. Sliding drive part; 204. Bearing; 205. Connecting part; 206. Snap ring;

[0048] 2011, Slide groove; 2012, Mounting plate; 2013, First protruding ring; 2014, Second protruding ring;

[0049] 2021, Sliding rod; 2022, Foaming unit; 20211, Guide post;

[0050] 2031, Drive component; 2032, Drive wheel; 20311, Guide groove; 20312, Grip part; 20313, Drive ring. Detailed Implementation

[0051] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0052] In the description of this utility model, it should be noted that the terminology based on the orientation or positional relationship shown in the accompanying drawings is only for the convenience of describing this utility model and simplifying the description, and does 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 a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0054] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0055] Example 1

[0056] In existing vehicles, for example, the mounting cavities in the side panels are usually filled with foam material to achieve effective noise reduction and sound insulation, thereby providing passengers with a quieter riding environment.

[0057] With the development of hybrid vehicles, a high-voltage charging port needs to be installed in the rear side panel, which means an AC / DC charging socket assembly for high-voltage charging is required. Because the AC / DC charging socket assembly for high-voltage charging requires more surrounding space, the cavity in the rear side panel becomes smaller, making it impossible to place cotton padding inside the cavity, thus causing sound leakage.

[0058] In addition, because the charging harness that enables high-voltage charging is thicker, it exerts a greater force on the AC / DC charging socket assembly. As a result, the outer sheet metal of the rear wheel arch and the outer sheet metal of the rear side panel are usually pinched together at the charging port to avoid each other. This also results in a smaller rear side panel cavity and an irregular shape of the rear side panel cavity, which is also the reason why it is impossible to arrange the white cotton blocks neatly.

[0059] Because it is impossible to arrange neat white cotton blocks, there are weak sound insulation paths in the rear side cavity area, which can easily cause tire noise, chassis wind noise and other noises to leak into the car from the weak points, affecting the driving and riding experience. Filling the rear side cavity with foam material is also a good way to reduce noise.

[0060] Although foamed materials possess a certain degree of fluidity and filling ability, allowing them to adapt well to installation cavities of various shapes and sizes, the extent to which the foamed material can flow and fill is limited by its initial installation location. Due to limitations such as the varying shapes and sizes of installation cavities, filling different cavities with foamed material typically requires designing foam skeletons of various shapes, resulting in high design and production costs. However, without designing individual foam skeletons, it is difficult to install the foamed material in the ideal position, thus failing to achieve the desired filling effect and limiting the foamed material's noise reduction and sound attenuation functions.

[0061] This embodiment relates to a foaming structure for installation into an installation cavity, which has a certain degree of adjustability and adaptability, enabling it to be better installed in installation cavities of different shapes and sizes, and facilitating the installation of the foaming unit to the ideal installation position.

[0062] An exemplary structure of the foaming structure in this embodiment is as follows: Figures 1 to 4 As shown, its structural diagram in the application state is as follows: Figure 11 As shown. In terms of overall structure, the foaming structure of this embodiment mainly includes the mounting unit 2 and the foaming unit 2022 disposed on the mounting unit 2.

[0063] The mounting unit 2 includes a mounting base 201, a sliding part 202 slidably disposed on the mounting base 201, and a sliding drive part 203 pultrusively connected to the sliding part 202. A foaming unit 2022 is disposed on the sliding part 202, and the foaming unit 2022 expands when heated. The sliding drive part 203 drives the sliding part 202, allowing the sliding part 202 to move from a position close to the mounting base 201 to a position away from the mounting base 201, thereby enabling the foaming unit 2022 to abut against the side wall of the mounting cavity 3, thus fixing the foaming unit 2022 in a more ideal mounting position within the mounting cavity 3.

[0064] The foaming structure in this embodiment mainly includes two parts: the installation unit 2 and the foaming unit 2022. The foaming unit 2022 is the main functional part of the structure, which is used to achieve a better sound insulation and noise reduction effect after heating and expansion. The installation unit 2 is to ensure that the foaming unit 2022 can be installed in the installation cavity 3, mainly to facilitate the installation of the foaming unit 2022.

[0065] The mounting unit 2 mainly includes three parts: mounting base 201, sliding part 202, and sliding drive part 203. The mounting base 201 is the basic part of the mounting unit 2, which can provide a stable support platform for the subsequent sliding part 202 and sliding drive part 203, so that the foaming unit 2022 can move with the sliding part 202 to a more ideal installation position.

[0066] The sliding part 202 is designed to slide on the mounting base 201. Its movement trajectory starts from a position close to the mounting base 201 and slides all the way to a position far away from the mounting base 201. This movement characteristic of the sliding part 202 can lay the foundation for its subsequent fixing function.

[0067] The sliding drive unit 203 is a key transmission device, which is connected to the sliding unit 202. Its function is to provide power and drive the sliding unit 202 to slide along a predetermined trajectory. Through the operation of the sliding drive unit 203, the sliding unit 202 can deliver the foaming unit 2022 to the designated position.

[0068] When the foamed structure needs to be installed in the mounting cavity 3, a driving force is first applied to the sliding drive part 203, which drives the sliding part 202 to start moving. Specifically, the sliding part 202 starts from an initial position near the mounting base 201 and gradually slides outward until the foaming unit 2022 can contact the side wall of the mounting cavity 3. Once the foaming unit 2022 abuts against the side wall of the mounting cavity 3, due to the combined action of the sliding part 202 and the mounting base 201, the foaming unit 2022 can be delivered to the appropriate installation position in the mounting cavity 3.

[0069] In this embodiment, the foam structure, through the installation unit 2, has a sliding part 202 that can slide relative to the mounting base 201. This not only ensures the stability of the foam structure installation but also greatly simplifies the installation process and improves installation efficiency. Furthermore, due to the presence of the sliding part 202 and the sliding drive part 203, the foam structure also has a certain degree of adjustability and adaptability, enabling it to be better installed in mounting cavities 3 of different shapes and sizes.

[0070] In a preferred embodiment, there are multiple sliding parts 202, and each foaming unit 2022 corresponds to one sliding part 202. The multiple sliding parts 202 are respectively connected to the sliding driving part 203 for transmission. The multiple sliding parts 202 are driven by the sliding driving part 203 and can slide simultaneously relative to the mounting base 201.

[0071] As in this embodiment, refer to Figure 5 and Figure 6 As shown, there are six sliding parts 202 and six foaming units 2022, which are connected together. It should be understood that the number of sliding parts 202 can also be set to other numbers, such as two, three, four, etc.

[0072] Here, the arrangement of multiple sliding parts 202 means that during the installation process, the foam structure can simultaneously contact the side wall of the mounting cavity 3 through multiple foaming units 2022. Compared with the single-point contact method, this multi-point contact method can achieve simultaneous driving of multiple foaming units 2022, which is conducive to the simultaneous installation of multiple foaming units 2022.

[0073] Each sliding part 202 is connected to the sliding drive part 203, which means that the sliding drive part 203 can synchronously control the movement of all sliding parts 202. This design simplifies the installation process because only one sliding drive part 203 needs to be operated to achieve synchronous sliding of all sliding parts 202, thereby improving the accuracy and efficiency of installation.

[0074] Multiple sliding parts 202 can slide simultaneously relative to the mounting base 201, allowing the foamed structure to reach the predetermined fixed position more quickly during installation. Furthermore, since all sliding parts 202 slide synchronously, the contact force between each foamed part 2022 and the sidewall of the mounting cavity 3 is also uniform, which helps reduce installation problems caused by uneven force distribution.

[0075] As a preferred implementation method, such as Figure 7 and Figure 8 As shown, the sliding drive unit 203 includes a drive member 2031 rotatably mounted on the mounting base 201. The sliding drive unit 203 is connected to a plurality of sliding parts 202 respectively through the drive member 2031, and the sliding direction of the plurality of sliding parts 202 is arranged intersecting the rotation center of the drive member 2031.

[0076] The drive element 2031 is rotatably mounted on the mounting base 201, meaning it can rotate on a fixed axis. The sliding drive unit 203 is connected to multiple sliding parts 202 via the drive element 2031. This connection can be achieved in various ways, such as by chain, gear, or belt. However, this connection method must ensure that when the drive element 2031 rotates, it can synchronously and smoothly drive all sliding parts 202 to slide.

[0077] The sliding directions of multiple sliding parts 202 are all arranged intersecting the rotation center of the drive member 2031. For example, the movement direction of the sliding part 202 is orthogonal to the rotation center of the drive member 2031. This arrangement helps to ensure that all sliding parts 202 remain synchronized and coordinated during the sliding process. It also facilitates the arrangement of multiple sliding parts 202, allowing the sliding parts 202 to make more effective use of the space on the mounting base 201.

[0078] Still refer to Figures 1 to 3 As shown, in a preferred embodiment, there are two mounting units 2 arranged at intervals along the rotation center of the drive member 2031. The two mounting seats 201 are connected by the first connecting part 1. The sliding parts 202 corresponding to the positions on the two mounting units 2 are connected by the second connecting part 7. The foaming units 2022 corresponding to the positions on the two mounting units 2 are connected together and are provided on the corresponding sliding parts 202 through the second connecting part 7.

[0079] In the above structure, the two mounting units 2 are arranged at intervals along the rotation center of the drive member 2031, and the two mounting seats 201 can be connected by the first connecting part 1 to form a stable overall structure. The sliding parts 202 corresponding to the positions on the two mounting units 2 are connected by the second connecting part 7, for example, by bonding or snapping, so that the sliding parts 202 corresponding to the positions on the two mounting units 2 can rotate synchronously. In this embodiment, the foaming units 2022 corresponding to the positions on the two mounting units 2 can be bonded to the second connecting part 7 at the corresponding positions, so that each foaming unit 2022 can slide with the sliding part 202 to the ideal mounting position.

[0080] Continue to refer to Figure 3 As shown, in this exemplary embodiment, the first connecting part 1 includes a connecting rod connecting the two mounting bases 201, and the second connecting part 7 includes a connecting plate connecting the two sliding parts 202. The connecting plate has an arc-shaped cross-section and is covered with multiple openings. The second connecting part 7 is provided here to facilitate the synchronous movement of the sliding parts 202 on both sides.

[0081] It should be noted that, in Figure 3 In the structure shown, the mounting units 2 on both sides have roughly the same structure. It should be understood that the mounting units 2 on both sides can also be configured with different structures, for example... Figure 3 In the state shown, the sliding drive part 203 on one side of the mounting unit 2 can be omitted. By rotating the sliding drive part 203 on the other side, the sliding parts 202 on both sides move synchronously. Specifically, the second connecting part 7 can drive the corresponding sliding part 202 on the other side to move synchronously.

[0082] It should be noted that, in the preferred embodiment, each second connecting part 7 is covered with multiple openings. For example, the second connecting part adopts a connecting plate with an arc-shaped cross-section, the length direction of which is along the length direction of the connecting rod. Figure 3 The state shown extends in the left and right directions. The openings in the connecting plate allow the foaming unit 2022 to flow out through the openings without affecting the support strength of the foaming unit 2022.

[0083] Continue to refer to Figures 6 to 8 As shown, in a preferred embodiment, the drive member 2031 includes a drive disk rotatably disposed on the mounting base 201. The drive disk and each sliding part 202 are connected by a guide structure. Each guide structure includes a guide groove 20311 disposed on the drive disk and a guide post 20211 disposed on the sliding part 202. The guide post 20211 is inserted into the guide groove 20311.

[0084] The driving component 2031 is a circular driving disk rotatably mounted on the mounting base 201, which can rotate freely on the mounting base 201. The driving disk and each sliding part 202 are connected by a guide structure. This guide structure includes a guide groove 20311 on the driving disk and a guide post 20211 on the sliding part 202.

[0085] The guide groove 20311 is a specially shaped slot on the drive disk, whose shape and size match the guide post 20211 to ensure that the guide post 20211 can slide smoothly within it. The guide post 20211 is a protruding structure fixed on the sliding part 202, which is inserted into the guide groove 20311 to form a transmission connection with the drive disk.

[0086] When the drive disc rotates, the shape of the guide groove 20311 guides the guide post 20211 to slide along a predetermined path. Due to the tight fit between the guide groove 20311 and the guide post 20211, this sliding motion is smoothly and accurately transmitted to the sliding part 202, thereby driving the sliding part 202 to slide synchronously. This transmission connection method is not only simple and effective, but also has high transmission accuracy and stability.

[0087] Since all sliding parts 202 are connected to the drive disk via a guide structure, all sliding parts 202 will begin to slide simultaneously when the drive disk rotates. This synchronous sliding characteristic ensures the stability and consistency of the foam structure during installation, helping to reduce installation problems caused by asynchrony.

[0088] In this embodiment, the multiple guide grooves 20311 have the same shape, and the multiple guide grooves 20311 are centered on the rotation center of the drive member 2031, so that each sliding part 202 can slide simultaneously and with the same sliding stroke. It should be understood that, according to actual needs, the bending shape of one, two or even more guide grooves 20311 can be changed, thereby adjusting the sliding stroke of the sliding part 202 corresponding to each guide groove 20311 to achieve matching with the surrounding components.

[0089] To ensure the stability of each sliding part 202 after sliding out, in an exemplary embodiment, the circumferential direction of the guide post can be set as a gear, and a rack can be provided on the inner wall of the guide groove 20311. The gear and rack are connected by meshing, and by adjusting the shape of the teeth on the gear and rack, the sliding part 202 can only move from the position close to the mounting base 201 to the position away from the mounting base 201. This prevents the sliding part 202 from sliding in the opposite direction after it abuts against the side wall of the mounting cavity 3, thereby fixing the foaming unit 2022 in the mounting cavity 3.

[0090] In addition, the fitting accuracy between the sliding part 202 and the sliding groove 2011 can be increased, thereby increasing the friction between the sliding part 202 and the sliding groove 2011, making it less likely for the sliding part 202 to return when it slides to its maximum position away from the mounting base 201. Alternatively, other locking structures can be provided on the sliding part 202 and the sliding groove 2011 to prevent the sliding part 202 from sliding in the opposite direction.

[0091] For example, in one exemplary embodiment, an opening is provided on the sliding part 202 and the slide groove 2011, which extends through both. When the sliding part 202 slides to the maximum position away from the mounting base 201, the sliding part 202 and the slide groove 2011 are locked by a connector such as a screw inserted in the opening. In addition, other existing locking structures can be provided to prevent the sliding part 202 from sliding in the opposite direction when it slides to the set position.

[0092] In a preferred embodiment, the sliding drive unit 203 further includes a drive wheel 2032 rotatably mounted on the mounting base 201, and the drive wheel 2032 and the drive member 2031 are meshed together. This meshing can be the meshing between gears, the engagement of a sprocket and a chain, etc. This connection needs to ensure that when the drive wheel 2032 rotates, it can smoothly and effectively drive the drive member 2031 to rotate.

[0093] The drive wheel 2032 is rotatably mounted on the mounting base 201, and its engagement with the drive member 2031 (i.e., the previously mentioned drive disc) is key to achieving transmission. When the drive wheel 2032 is driven to rotate by an external power source (such as a motor or the operator's rotational driving force), it transmits the rotational motion to the drive member 2031 through the engagement connection. The drive member 2031 then achieves a transmission connection with each sliding part 202 through a guide structure, driving the sliding parts 202 to slide. This series of transmission paths ensures that the energy transfer from the drive wheel 2032 to the sliding parts 202 is efficient and stable.

[0094] Due to the meshing connection between the drive wheel 2032 and the drive member 2031, and the guiding structure between the drive member 2031 and the sliding part 202, the entire sliding drive part 203 can ensure the synchronicity and stability of all sliding parts 202 during the sliding process. This design helps to reduce installation problems caused by asynchrony or instability and is conducive to improving the overall performance of the foam structure.

[0095] like Figure 8 As shown, in a preferred embodiment, the drive member 2031 is rotatably mounted on the mounting base 201 via the bearing 204. The side of the drive member 2031 facing away from the mounting base 201 is provided with a gripping part 20312, and the gripping part 20312 is arranged close to the bearing 204.

[0096] For example Figure 8In the structure shown, the drive disk has a mounting groove for mounting the bearing 204 on the side facing the mounting base 201. The drive component 2031 is rotatably mounted on the mounting base 201 through the bearing 204 in the mounting groove. The bearing 204 is interference-fitted to both the drive disk and the mounting base 201.

[0097] A through hole is provided on the connecting block at the center of the mounting base 201, so that an internal thread can be provided on the inner ring of the bearing 204 or an internal threaded connecting sleeve can be installed with an interference fit. The connecting piece 205 is screwed into the internal thread or the connecting sleeve by means of a bolt. Then, through the interference fit between the drive disc and the bearing 204, the drive disc can be rotated relative to the mounting base 201 via the bearing 204.

[0098] Alternatively, for example, if the inner ring of bearing 204 does not have an internal thread or a connecting sleeve, the connecting part 205 can be a connecting rod with a slot on it. The bearing 204 can be securely installed on the mounting base 201 by using a snap ring 206 to install it in the slot.

[0099] Bearing 204 is a component that can support a rotating mechanical body and reduce friction and wear during its movement. By mounting the drive component 2031 on the mounting base 201 through the bearing 204, it can be ensured that the drive component 2031 rotates smoothly and freely on the mounting base 201, while reducing friction and wear and improving the efficiency and stability of the transmission.

[0100] The grip portion 20312 provided on the side of the drive component 2031 facing away from the mounting base 201 is a structure that facilitates the user or operator to grip and operate the drive component 2031, ensuring that the user can operate the drive component 2031 easily and comfortably.

[0101] In this embodiment, the grip portion 20312 is specifically a protrusion formed on the drive member 2031. The protrusion is located on the side of the drive member 2031 facing away from the mounting base 201 and protrudes toward the side away from the mounting base 201, thereby facilitating the operator's grip and also facilitating the setting of the mounting groove for the bearing 204.

[0102] It should be understood that a through hole may also be provided on the grip portion 20312, so that the connector 205 can pass through the through hole on the grip portion 20312. In a preferred embodiment, for example... Figure 5 As shown, the connector 205 can pass upward through the grip portion 20312, and a portion of the connector 205 extends above the grip portion 20312, which also facilitates gripping.

[0103] The grip 20312 is positioned close to the bearing 204. This positional relationship helps ensure that the user can directly and effectively apply force when operating the drive component 2031, thereby driving the drive component 2031 to rotate. At the same time, because the grip 20312 is close to the bearing 204, it can also support and stabilize the drive component 2031 to a certain extent, reducing wobbling or deviation caused by improper operation.

[0104] like Figure 3 In the structure shown, the connecting rod is long and narrow. During assembly, the mounting base 201 on the right side can be installed on the connecting rod first, and the sliding part 202 on the right side can be pre-installed in the mounting base 201. Then, the bearing 204 on the right side is installed in place by the snap ring 206, and then the sliding drive part 203 on the right side is fitted onto the connecting rod.

[0105] When installing the mounting unit 2 on the left, you can first... Figure 3 The centrally located retaining ring 206 is installed in place. Then, the mounting base 201 and bearing 204 are installed in place, and the left retaining ring 206 is used for axial positioning. Then, the left sliding drive part 203 is installed.

[0106] Finally, the sliding portions 202 at corresponding positions in the mounting units 2 on both sides are connected by the second connecting portions 7, and the foaming units 2022 are adhered to each of the second connecting portions 7. In a preferred embodiment, the shape of the foaming unit 2022 is approximately the same as the shape of the second connecting portion 7, so that the second connecting portion 7 can provide stable support for the foaming unit 2022.

[0107] In a preferred embodiment, the first connecting part 1 is designed to have a noise reduction function. The first connecting part 1 is elongated, and the sliding direction of the sliding part 202 is orthogonal to the length direction of the first connecting part 1.

[0108] The first connecting part 1 is fixedly connected to the mounting base 201 of the mounting unit 2. For example, in one exemplary embodiment, the center of the mounting base 201 and the rotation center of the drive member 201 are both along the axial center of the first connecting part 1. The first connecting part 1 and the mounting base 201 are fixedly connected together, for example, by snap-fit, adhesive, screw, or other means.

[0109] The first connecting part 1 is set to be elongated, which means that it is relatively long in length, while its width and height are relatively small. This shape is particularly suitable for installation in the rear side cavity of the vehicle and helps to enhance its sound absorption effect.

[0110] By providing mounting units 2 at both ends of the first connecting part 1 along its length, it is beneficial to ensure that the first connecting part 1 has sufficient stability and firmness after installation. The sliding direction of the sliding part 202 is orthogonal to the length direction of the first connecting part 1, which is beneficial to ensure the position of the first connecting part 1 after installation, so that the foam structure can achieve better acoustic effect in the mounting cavity.

[0111] By providing mounting units 2 at both ends of the first connecting part 1 and allowing the sliding part 202 to slide orthogonally to the length direction, this design improves the convenience of installation and adjustment. The user can easily fix the first connecting part 1 to the desired position by adjusting the sliding part 202 to achieve its mating relationship with the inner wall of the mounting cavity 3.

[0112] As a preferred implementation method, such as Figure 7 As shown, the mounting base 201 is provided with a groove 2011, and the sliding part 202 includes a sliding rod 2021 embedded in the groove 2011 and a foaming unit 2022 provided on the sliding rod 2021. The sliding part 202 abuts against the side wall of the mounting cavity 3 through the foaming unit 2022, and the foaming unit 2022 can expand after heating.

[0113] Mounting base 201 serves as the fixed foundation for the entire mounting unit 2. A groove 2011 is designed on mounting base 201. The function of this groove 2011 is to provide a precise and stable sliding path for sliding part 202. The shape, size and position of groove 2011 are carefully designed to ensure that sliding part 202 can slide smoothly and easily within it, while ensuring the accuracy and stability of sliding.

[0114] Reference Figure 7 As shown in this embodiment, the mounting base 201 includes six mounting rods, each with a groove 2011 formed within it, and the sliding part 202 corresponds one-to-one with the groove 2011. The six mounting rods are located on the same plane, and their centers intersect at the same center point. The ends of the six mounting rods closest to this center point are fixed together by a connecting block. It should be understood that the number of mounting rods can, of course, be other than the number of the mounting rods, and the shape of the mounting base 201 can also be designed to form other shapes, as long as the grooves 2011 are formed to facilitate the sliding of the sliding part 202.

[0115] The sliding rod 2021 is the main part of the sliding section 202. It is fitted into the groove 2011 of the mounting base 201, and the shape and size of the sliding rod 2021 match the groove 2011 to ensure that it can slide smoothly in the groove 2011. One end of the sliding rod 2021 is connected to the sliding drive section 203, and the other end is connected to the foaming unit 2022.

[0116] The foaming unit 2022 is a special part of the sliding part 202. It is located at the end of the sliding rod 2021 and is used to directly contact the side wall of the mounting cavity 3. In a preferred embodiment, the foaming unit 2022 is designed to be arc-shaped and is connected to the sliding rod 2021, for example, by adhesive bonding.

[0117] The foaming unit 2022 is made of a special foaming material that expands when heated. This expansion characteristic allows the foaming unit 2022 to better fill the gap between the mounting cavity 3 and the first connecting part 1 after heating, and at the same time, it can be stably and reliably bonded to the side wall of the mounting cavity 3, thereby further enhancing the stability of the fixation.

[0118] When the sliding part 202 is driven by the sliding drive part 203 to slide to the position where it contacts the side wall of the mounting cavity 3, the foaming unit 2022 will fit tightly against the side wall. At this time, if the foaming unit 2022 is heated by a certain heating method, the foaming unit 2022 will begin to expand. This expansion can not only further enhance the fit between the foaming unit 2022 and the side wall of the mounting cavity 3, but also reduce the sound propagation path by filling the tiny gaps, thereby improving the sound absorption effect.

[0119] In a preferred embodiment, the first connecting part 1 includes a housing 101 with a cavity and a granular filler 102 filled in the cavity. The side wall of the housing 101 is provided with a plurality of sound-permeable holes 1011, and the diameter of the sound-permeable holes 1011 is smaller than the particle size of the filler 102.

[0120] In this exemplary structure, the first connecting part 1 mainly consists of a housing 101 with a cavity and granular filler 102 filling the cavity, wherein the housing 101 is the main structure of the first connecting part 1, and it can form a closed cavity. The material of the housing 101 is usually selected from materials with good acoustic properties and structural strength, such as metal, plastic or composite materials, and preferably high-temperature resistant plastics.

[0121] Particulate fillers 102 are filled into the cavity of the housing 101. These fillers can be particles of various shapes and sizes, such as spheres, cylinders, and flakes. The choice of material for the fillers 102 is also important. Materials with high density, high sound absorption coefficient, and good stability are usually chosen, such as sponge, rubber, polyurethane foam, glass wool, and rock wool. The purpose of these fillers 102 is to reduce sound propagation by absorbing, scattering, and reflecting sound waves.

[0122] In a preferred embodiment, the granular filler 102 includes sponge particles and rubber particles, which can be crushed and mixed in a specific ratio using existing machinery. Preferably, the ratio of sponge particle size to rubber particle size is greater than 2:1, and the ratio of sponge particle to rubber particle filling amount is also greater than 2:1. This facilitates resonance and provides excellent sound absorption.

[0123] This configuration, when applied to the rear side cavity, can maximize the dissipation of transmitted noise energy, improve the sound absorption performance of the rear side cavity, and reduce NVH performance loss caused by space constraints, effectively ensuring the vehicle's competitive performance.

[0124] Multiple sound-permeable holes 1011 are designed on the side wall of the housing 101. The function of these sound-permeable holes 1011 is to allow sound waves to enter the cavity of the first connecting part 1 and interact with the filler 102. The diameter of the sound-permeable holes 1011 is designed to be smaller than the particle size of the filler 102, which means that the filler 102 itself will not fall out of the cavity through the sound-permeable holes 1011. This design ensures the stability and durability of the first connecting part 1.

[0125] When sound waves enter the cavity of the first connecting part 1 through the sound-permeable hole 1011, they interact with the filler 102. The granular structure and material properties of the filler 102 cause the sound waves to be absorbed, scattered, and reflected during propagation. These interactions reduce the energy of the sound waves, thereby reducing the intensity of sound propagation. The design of the sound-permeable hole 1011 also helps to ensure that the sound waves can smoothly enter the cavity and facilitates the full interaction between the sound waves and the filler 102.

[0126] Example 2

[0127] This embodiment relates to a foaming structure, as shown in the reference... Figure 9 and Figure 10 As shown, it has a structure that is substantially the same as the foaming structure in Embodiment 1, except for the structure of the sliding drive part 203.

[0128] In this embodiment, the mounting base 201 includes a mounting plate 2012, and a first protruding ring 2013 and a second protruding ring 2014 disposed on one side of the mounting plate 2012. The first protruding ring 2013 and the second protruding ring 2014 are arranged concentrically.

[0129] The sliding drive unit 203 includes a drive member 2031 rotatably mounted on the mounting base 201. However, the drive member 2031 includes a drive ring 20313 rotatably mounted on the mounting base 201 and a plurality of drive wheels 2032 meshing with the drive ring 20313. The plurality of drive wheels 2032 correspond one-to-one with the plurality of sliding parts 202, and the corresponding drive wheel 2032 meshes with the sliding part 202.

[0130] Among them, the drive ring 20313 is one of the core components of the drive unit 2031, and it is rotatably mounted on the mounting plate 2012. For example... Figure 9 As shown, an annular cavity is formed between the first convex ring 2013 and the second convex ring 2014. The drive ring 20313 is installed in this cavity, and the outer wall of the drive ring 20313 abuts against the inner wall of the first convex ring 2013, providing stable support for the drive ring 20313. A gap is provided between the inner wall of the drive ring 20313 and the outer wall of the second convex ring 2014, allowing the drive ring 20313 to rotate freely around its center. To prevent the drive ring 20313 from detaching from the annular cavity, a retaining ring or screw can be provided on the inner wall of the cavity.

[0131] Multiple drive wheels 2032 are meshed with the drive ring 20313. These drive wheels 2032 are all located in the annular cavity and are evenly distributed on the inner circumference of the drive ring 20313, forming a meshing relationship with the drive ring 20313. Each drive wheel 2032 is matched with a specific tooth or groove shape on the drive ring 20313 to ensure that they can transmit power smoothly and efficiently.

[0132] Multiple drive wheels 2032 correspond one-to-one with multiple sliding parts 202. This means that each sliding part 202 has a drive wheel 2032 connected to it, which ensures that each sliding part 202 can be independently and accurately controlled by the driving force.

[0133] When the drive ring 20313 rotates on the mounting base 201, it drives multiple drive wheels 2032 meshing with it to rotate together. Since each drive wheel 2032 is connected to a sliding part 202, the rotating drive wheel 2032 drives the corresponding sliding part 202 to move. Thus, by controlling the rotation of the drive ring 20313, the movement state of multiple sliding parts 202 can be precisely controlled. In addition, the sliding part 202 can also be driven by rotating any one of the drive wheels 2032.

[0134] Example 3

[0135] This embodiment relates to a vehicle in which a foamed structure, as in Embodiment 1 or Embodiment 2, is provided in the rear side cavity.

[0136] The vehicle in this embodiment, by applying the foam structure described above, can significantly improve its acoustic performance, particularly in reducing noise and vibration. The foam structure is easy to install within the rear side cavity and can be stably fixed within the mounting cavity, thereby allowing the foam unit to exert excellent noise reduction performance.

[0137] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A foaming structure for filling into a mounting cavity (3), characterized in that: the foaming structure comprises a mounting unit (2) and a foaming unit (2022) arranged on the mounting unit (2); the mounting unit (2) comprises a mounting base (201), a sliding part (202) slidingly arranged on the mounting base (201), and a sliding driving part (203) in driving connection with the sliding part (202); the foaming unit (2022) is arranged on the sliding part (202) and can be expanded by heating; and the sliding driving part (203) drives the sliding part (202) to move from a position close to the mounting base (201) to a position away from the mounting base (201) and to make the foaming unit (2022) abut against a side wall of the mounting cavity (3).

2. The foaming structure according to claim 1, characterized in that: the sliding part (202) is a plurality of, and the foaming unit (2022) corresponds to the sliding part (202) one by one; the plurality of sliding parts (202) are respectively in driving connection with the sliding driving part (203), and the plurality of sliding parts (202) are driven by the sliding driving part (203) to slide simultaneously relative to the mounting base (201).

3. The foaming structure according to claim 2, characterized in that: the sliding driving part (203) comprises a driving member (2031) rotatingly arranged on the mounting base (201), the sliding driving part (203) is in driving connection with the plurality of sliding parts (202) through the driving member (2031), and the sliding directions of the plurality of sliding parts (202) are all arranged intersecting with the rotation center of the driving member (2031).

4. The foaming structure according to claim 3, characterized in that: the mounting unit (2) is two arranged along the rotation center of the driving member (2031) at intervals, the two mounting bases (201) are connected through a first connecting part (1), the sliding parts (202) corresponding in position on the two mounting units (2) are connected through a second connecting part (7), the foaming units (2022) corresponding in position on the two mounting units (2) are connected together and arranged on the corresponding sliding parts (202) through the second connecting part (7).

5. The foaming structure according to claim 4, characterized in that: the first connecting part (1) comprises a connecting rod connecting the two mounting bases (201), and the second connecting part (7) comprises a connecting plate connecting the two sliding parts (202); the connecting plate has an arc-shaped cross section, and a plurality of openings are arranged on the connecting plate.

6. The foaming structure according to claim 3, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The driving member (2031) comprises a driving disc rotatably arranged on the mounting base (201), and the driving disc and each of the sliding parts (202) are in transmission connection through a guide structure, each of the guide structures comprises a guide slot (20311) arranged on the driving disc, and a guide column (20211) arranged on the sliding part (202), the guide column (20211) is inserted into the guide slot (20311).

7. The foamed structure according to claim 6, characterized in that: The sliding driving part (203) further comprises a driving wheel (2032) rotatably arranged on the mounting base (201), and the driving wheel (2032) and the driving member (2031) are in engagement connection; and / or, The driving member (2031) is rotatably arranged on the mounting base (201) through a bearing (204), a holding part (20312) is arranged on the side of the driving member (2031) away from the mounting base (201), and the holding part (20312) is arranged close to the bearing (204).

8. The foamed structure according to claim 3, characterized in that: The driving member (2031) comprises a driving ring (20313) rotatably arranged on the mounting base (201), and a plurality of driving wheels (2032) in engagement connection with the driving ring (20313); A plurality of the driving wheels (2032) correspond to a plurality of the sliding parts (202) one by one, and the corresponding driving wheel (2032) and the sliding part (202) are in engagement connection.

9. The foamed structure according to any one of claims 1-8, characterized in that: The mounting base (201) is provided with a sliding groove (2011), the sliding part (202) comprises a sliding rod (2021) embedded in the sliding groove (2011), and the foaming unit (2022) is arranged at the end of the sliding rod away from the mounting base (201).

10. A vehicle, characterized in that: The vehicle is provided with the foamed structure according to any one of claims 1-9.

Images