A gearbox acoustic package

Abstract

The utility model discloses a gearbox sound insulation package belongs to the industry, including protection mechanism, and protection mechanism includes gearbox protection shell, and the inside of gearbox protection shell is provided with the acupuncture cotton for the purpose of shock attenuation, and the inner core of acupuncture cotton is filled with the configuration cavity groove for assembling, and the edge of configuration cavity groove is provided with the hard layer of cladding for the purpose of toughening, and the middle part of gearbox protection shell is provided with the cavity groove for wrapping up the main structure of gearbox, and the slot position of cavity groove is sequentially arranged and is provided with soft layer, intermediate layer and hard layer, and three layers of different purpose hierarchical structure are pressed to make, and the position of soft layer is PU foamed material, and the position of hard layer is EVA or acupuncture cotton, and the position of intermediate layer is PAPE film, and through the acupuncture cotton and the configuration cavity groove of built -in better first show gearbox package cladding, can also avoid receiving external impact while increasing the effect of protection to gearbox, and can effectively form a protection space with gearbox outside and realize protection in the position of cavity groove and adjusting cavity groove and configuration cavity groove.

Description

Technical Field

[0001] This utility model relates to the field of industrial technology, specifically to a gearbox sound insulation package. Background Technology

[0002] A transmission, also known as a gearbox, is a mechanism used to change the speed and torque from an engine. It can change the transmission ratio between the output shaft and the input shaft in a fixed or progressively increasing manner. A transmission consists of a gear-shifting mechanism and a control mechanism; some cars also have a power take-off (PTO) mechanism. Most transmission mechanisms use ordinary gear drives, while some use planetary gear drives. Ordinary gear drive transmission mechanisms typically use sliding gears and synchronizers, etc.

[0003] A search revealed a medium-low frequency damping sound insulation wrapping structure in application number CN202221227466.1. The application discloses a medium-low frequency damping sound insulation wrapping structure, specifically relating to the field of pipelines. The application includes a pipeline, the surface of which is covered with sound-absorbing cotton. A wrapping device is provided on the surface of the sound-absorbing cotton. The wrapping device includes several connecting ropes, which are evenly and fixedly connected to the ends of the sound-absorbing cotton. A rope loop is fixedly connected to the end of each connecting rope away from the sound-absorbing cotton. Elastic ropes are slidably connected to the inner walls of the rope loops. A hook is fixedly connected to one end of each elastic rope, and a ring is fixedly connected to the end of the elastic rope away from the hook. A limiting groove is formed on the side wall of the pipeline. The elastic rope is located on the inner wall of the upper limiting groove of the pipeline. An elastic ring is glued to the side of the pipeline away from the limiting groove. This application, by setting up a wrapping structure, facilitates the wrapping and fixing of the sound-absorbing cotton on the pipeline, thereby facilitating the regular replacement of the sound-absorbing cotton by staff and improving the sound insulation effect during pipeline use.

[0004] Traditional transmission protection structures have poor sound insulation. Currently, people play an important role in the quiet and comfortable environment inside the car. As users have higher requirements for the driving experience, this acoustic package is a key acoustic component of future cars. However, in terms of sound insulation, traditional sound insulation is ineffective and can easily cause the transmission noise to spread too quickly. Utility Model Content

[0005] An embodiment of this utility model provides a gearbox sound insulation package, which aims to solve existing problems.

[0006] To achieve the above objectives, this utility model provides a gearbox sound insulation package, including a protective mechanism. The protective mechanism includes a gearbox protective shell, the inside of which is provided with needle-punched cotton for shock absorption. The inner core of the needle-punched cotton is filled with a configuration cavity for assembly. The edge of the configuration cavity is provided with a toughening covering layer. The middle part of the gearbox protective shell is provided with a first cavity for wrapping the main structure of the gearbox.

[0007] As a preferred embodiment of this utility model: a soft layer, an intermediate layer and a hard layer are arranged sequentially in the groove of the first cavity, and the three layers with different purposes are pressed together. The soft layer is PU foam material, the hard layer is EVA or needle-punched cotton, and the intermediate layer is PA / PE film.

[0008] As a preferred embodiment of the present invention: a gearbox adjustment end adapter mechanism is further provided on one side of the hard coating layer. The gearbox adjustment end adapter mechanism includes a first access base provided on one side of the hard coating layer, and an adapter protrusion is provided at the bottom of the first access base.

[0009] As a preferred embodiment of the present invention: an adjustment cavity is provided on the other side of the gearbox protective housing, and a connecting base for adaptation is sequentially provided in the middle of the groove of the adjustment cavity. A second cavity is sequentially opened on the middle surface of the bottom end of the connecting base, and a locking buckle for adaptation is provided on the side of the second cavity.

[0010] As a preferred embodiment of the present invention: one end of the locking buckle is provided with an assembly block, the bottom surface of the assembly block is provided with an adapter base, and the bottom center of the adapter base is provided with an adjustment base for contact.

[0011] As a preferred embodiment of the present invention: the surface of the configuration cavity is provided with a second access base for adaptation, and the side of the second access base is provided with an adaptation mechanism. The adaptation mechanism includes a plurality of mounting holes installed on the bottom surface of the gearbox protective housing. The surfaces of the mounting holes are all adapted to the gearbox housing surface by fastening screws.

[0012] As a preferred embodiment of this utility model: the gearbox protective housing has a plurality of fastening bolt holes arranged sequentially in the middle of the housing for assembly, the gearbox protective housing has a shock-absorbing groove in the middle, and the top surface of the gearbox protective housing is provided with a wrapping adjustment base.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By using needle-punched cotton and built-in configuration grooves, the transmission is better covered, which not only increases the protection of the transmission, but also avoids external impact. The grooves, adjustment grooves and configuration grooves can effectively form a protective space to protect the transmission from the outside.

[0015] 2. In terms of sound insulation, it utilizes the best layer of EVA and needle-punched cotton. The sound insulation of EVA can effectively reduce the noise generated by the operation of the car transmission, which plays an important role in the quiet and comfortable environment inside the car. As users have higher and higher requirements for the driving experience, this acoustic package is a key acoustic component of future cars. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the cavity structure of this utility model;

[0019] Figure 4 This is a structural diagram of the adjustable base of this utility model.

[0020] In the diagram: 1. Protective mechanism; 11. Gearbox protective housing; 111. Fastening bolt hole; 12. Needle-punched cotton; 13. Configuration cavity; 14. Covering hard layer; 15. First cavity;

[0021] 2. Gearbox adjustment end adapter mechanism; 21. First access base; 22. Adapter protrusion; 23. Adjustment cavity; 24. Connecting base; 25. Second cavity; 26. Clamping buckle; 27. Assembly block; 28. Adapter base; 29. ​​Adjustment base; 291. Second access base;

[0022] 3. Adaptor mechanism; 31. Assembly hole; 32. Fastening screw; 33. Shock-absorbing groove; 34. Wrapping adjustment base. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 4 This utility model provides a gearbox sound insulation package, including a protective mechanism 1. The protective mechanism 1 includes a gearbox protective shell 11. The gearbox protective shell 11 is provided with needle-punched cotton 12 for shock absorption. The inner core of the needle-punched cotton 12 is filled with a configuration cavity 13 for assembly. The edge of the configuration cavity 13 is provided with a toughening covering hard layer 14. The middle part of the gearbox protective shell 11 is provided with a first cavity 15 for wrapping the main structure of the gearbox.

[0025] In this embodiment: a soft layer, an intermediate layer and a hard layer are arranged sequentially in the groove of the first cavity 15. The three layers with different purposes are pressed together. The soft layer is made of PU foam material, the hard layer is made of EVA or needle-punched cotton 12, and the intermediate layer is made of PA / PE film.

[0026] The PU foam material and hard layer are EVA or needle-punched cotton 12 to implement sealing and avoid noise and temperature rise.

[0027] In this embodiment: a gearbox adjustment end adapter mechanism 2 is also provided on one side of the hard layer 14. The gearbox adjustment end adapter mechanism 2 includes a first access base 21 provided on one side of the hard layer 14, and an adapter protrusion 22 is provided at the bottom of the first access base 21.

[0028] The surface of the first access base 21 and the corresponding adapter protrusion 22 provides support, thereby improving the support force at one end of the hard layer 14.

[0029] In this embodiment: an adjustment cavity 23 is provided on the other side of the gearbox protective housing 11. A connecting base 24 for adaptation is sequentially provided in the middle of the groove of the adjustment cavity 23. A second cavity 25 is sequentially opened on the middle surface of the bottom end of the connecting base 24. A locking buckle 26 for adaptation is provided on the side of the second cavity 25.

[0030] The second cavity 25 and the locking buckle 26 further facilitate the assembly of the gearbox protective housing 11 with the specific gearbox body.

[0031] In this embodiment: an assembly block 27 is provided at one end of the locking buckle 26, an adapter base 28 is provided on the bottom surface of the assembly block 27, and an adjustment base 29 for contact is provided at the bottom center of the adapter base 28.

[0032] The assembly block 27 and the specific adapter base 28 are matched and combined with the specific gearbox housing surface.

[0033] In this embodiment: the surface of the cavity 13 is provided with a second access base 291 for adaptation, and the side of the second access base 291 is provided with an adaptation mechanism 3. The adaptation mechanism 3 includes a plurality of mounting holes 31 installed on the bottom surface of the gearbox protective housing 11. The hole surfaces of the plurality of mounting holes 31 are all adapted and installed to the gearbox housing surface by fastening screws 32.

[0034] The use of 32 fastening screws facilitates the covering of the gearbox housing surface, improving the installation stability and tightness of the gearbox.

[0035] In this embodiment: the gearbox protective housing 11 has a number of fastening bolt holes 111 arranged in sequence in the middle of the housing for assembly, the gearbox protective housing 11 has a shock-absorbing groove 33 in the middle, and the top surface of the gearbox protective housing 11 is provided with a wrapping adjustment base 34.

[0036] In practical use, the first step is to assemble the gearbox protective shell 11 onto the gearbox.

[0037] At this point, personnel need to determine the front and back sides, locate the position of the first cavity 15, and then use the housing position of the gearbox protective shell 11 to fasten it to the specific surface of the gearbox. After fitting, personnel need to locate the covering hard layer 14 to achieve assembly. Then, using the support of the connecting base 24, the user binds it to the specific surface of the gearbox. Using the binding effect of the needle-punched cotton 12, the user fits it according to the slot of the configured cavity 13. Based on the support of the corresponding first access base 21, the corresponding needle-punched cotton 12 is further wrapped. Because the internal layer has a clear sound insulation structure, it can effectively attenuate the noise generated by the car gearbox, playing an important role in the quiet and comfortable environment inside the car. As users have increasingly higher demands for driving experience, this acoustic package is a key acoustic component of future cars, generally adopting a soft and hard structure. Commonly used "soft layer" materials are PU foam, and "hard layer" materials include EVA and needle-punched cotton. EVA has slightly better sound insulation performance than needle-punched cotton, but this is only a test result regarding the materials. The NVH performance of a product is influenced by many factors, such as material properties, design rationality, assembly fit, and sealing. Therefore, a comprehensive analysis is needed from the aspects of material selection, design, and manufacturing process. Considering that the operating temperature of this component can reach up to 105℃, the film will soften. Therefore, needle-punched cotton is selected as the material. This allows the internal structure of the gearbox protective housing 11 to be assembled with the specific structure, and the combination of the mounting holes 31 and the fastening screws 32 can better fit together.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gearbox sound insulation package, comprising a protective mechanism (1), characterized in that, The protective mechanism (1) includes a gearbox protective housing (11), the inside of which is provided with needle-punched cotton (12) for shock absorption, the inner core of which is filled with a configuration cavity (13) for assembly, the edge of which is provided with a toughening covering layer (14), and the middle of which is provided with a first cavity (15) for wrapping the main structure of the gearbox.

2. The gearbox sound insulation package according to claim 1, characterized in that: The first cavity (15) has a soft layer, an intermediate layer and a hard layer arranged in sequence in the groove. The three layers are pressed together to form a different purpose layer structure. The soft layer is PU foam material, the hard layer is EVA or needle-punched cotton (12), and the intermediate layer is PA / PE film.

3. The gearbox sound insulation package according to claim 1, characterized in that: One side of the hard covering layer (14) is also provided with a gearbox adjustment end adapter mechanism (2). The gearbox adjustment end adapter mechanism (2) includes a first access base (21) provided on one side of the hard covering layer (14), and an adapter protrusion (22) is provided at the bottom of the first access base (21).

4. The gearbox sound insulation package according to claim 1, characterized in that: The other side of the gearbox protective housing (11) is provided with an adjustment cavity (23). The middle of the groove of the adjustment cavity (23) is provided with a connecting base (24) for adaptation. The bottom middle surface of the connecting base (24) is provided with a second cavity (25). The side of the second cavity (25) is provided with a locking buckle (26) for adaptation.

5. A gearbox sound insulation package according to claim 4, characterized in that: One end of the locking buckle (26) is provided with an assembly block (27), the bottom surface of the assembly block (27) is provided with an adapter base (28), and the bottom center of the adapter base (28) is provided with an adjustment base (29) for contact.

6. The gearbox sound insulation package according to claim 1, characterized in that: The surface of the configuration cavity (13) is provided with a second access base (291) for adaptation. The side of the second access base (291) is provided with an adaptation mechanism (3). The adaptation mechanism (3) includes a plurality of mounting holes (31) installed on the bottom surface of the gearbox protective housing (11). The hole surfaces of the plurality of mounting holes (31) are all adapted to the gearbox housing surface by fastening screws (32).

7. A gearbox sound insulation package according to claim 1, characterized in that: The gearbox protective housing (11) has a number of fastening bolt holes (111) arranged in sequence in the middle of the housing for assembly. The gearbox protective housing (11) has a shock-absorbing groove (33) in the middle. The top surface of the gearbox protective housing (11) is provided with a wrapping adjustment base (34).

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