Reusable acoustic bag and air suspension system

Abstract

The invention provides a reusable acoustic bag and an air suspension system, the acoustic bag comprises a shell and a locking mechanism, a plug pin is axially limited and mounted on a connecting part, and the plug pin is respectively connected with the corresponding shells on the inner side and the outer side of the connecting part, so that an upper shell and a lower shell are connected through the plug pin and form a sealed mounting cavity. Wherein the plug pin is axially mounted on the connecting part of the upper shell and the lower shell in a limiting manner, and the plug pin is not directly and fixedly connected with the shell. The connection relation between the upper shell body and the lower shell body disappears along with dismounting of the plug pin of the locking mechanism. Therefore, according to the reusable acoustic bag disclosed by the invention, the upper shell and the lower shell are connected through the bolts, the acoustic bag can be opened only by dismounting the bolts from the corresponding shells on the inner side and the outer side of the connecting part when a dismounting requirement exists, and the upper shell and the lower shell can be continuously reused without being damaged; repeated utilization of the acoustic bag is realized, and the use cost of the acoustic bag is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle acoustic packages, and in particular to a reusable acoustic package and an air suspension system. Background Art

[0002] With the rapid development of the automobile industry, the requirements for automobile comfort are getting higher and higher. As an important highlight of chassis technology improvement in recent years, the air suspension system has been widely adopted. While the air suspension system improves comfort, the noise problem has also become a pain point of the air suspension system and needs to be strictly controlled. The noise of the air suspension system mainly comes from the air supply unit. Therefore, in order to solve the noise problem of the air supply unit, an air supply unit acoustic package can be added to effectively block the noise generated during the operation of the air compressor. After testing, the iron material air supply unit acoustic package can reduce noise by about 10dB, and the sound insulation effect is excellent.

[0003] There are two main types of traditional acoustic packages:

[0004] The first type (such as Figure 7 ) is to perform flanges on the upper and lower shells, and drill concentric holes on the upper and lower shells, and weld projection nuts on the lower shell. This fixing method is convenient for quickly tightening the screws 15 from top to bottom when the air compressor is placed on a workbench, but there is a risk of the projection nuts falling off. At the same time, the upper and lower flanges of the shell will squeeze the internal space of the entire air supply unit, making the layout of the air compressor more difficult.

[0005] The second type (such as Figure 8 ) uses a box-type shell, that is, the upper shell can be directly buckled on the lower shell, and the upper shell can completely cover the lower shell by turning the flange downward, which can better achieve the sealing effect. This structure is fixed with screws from all sides. During installation, the distance between the upper and lower shells needs to be controlled in advance, and the projection welded nuts inside the lower shell also have the risk of falling off. In addition, the projection welded nuts and screws also occupy a part of the space inside.

[0006] The shells of the above two acoustic packages use projection welded nuts. When the internal parts need to be repaired during factory production and assembly, the torque must be broken for easy disassembly. However, the process of detecting thread damage is cumbersome. In this case, the acoustic package and its spare parts will be scrapped and replaced. When related failures occur in subsequent vehicles, the acoustic package will also be scrapped and replaced for safety reasons. However, the acoustic package is the most expensive component of the entire air supply unit except for the compressor, and using the acoustic package once will result in cost waste. Summary of the invention

[0007] In view of some of the shortcomings of the above-mentioned prior art, the present invention provides a reusable acoustic pack and air suspension system, which solves the problem that the acoustic pack of the air supply unit is not reusable by changing the connection and locking method of the upper shell and the lower shell of the acoustic pack, thereby greatly reducing the cost of use.

[0008] To achieve the above and other related purposes, the present invention provides a reusable acoustic package, comprising:

[0009] A housing, the housing comprising an upper housing and a lower housing, wherein an edge of the upper housing is covered on the outside of the lower housing, and a side wall of the upper housing is enclosed with a side wall of the lower housing to form a connecting cavity; and

[0010] The locking mechanism includes a latch and a screw. The latch is arranged in the connecting cavity. The latch passes through the lower shell corresponding to the connecting cavity and is fixed by a pin. The screw passes through the upper shell corresponding to the connecting cavity and is fixedly connected to the latch, so that the upper shell and the lower shell are connected to form a sealed installation cavity.

[0011] In one embodiment of the present invention, a first sound insulation cotton layer is sandwiched between the upper shell and the lower shell.

[0012] In one embodiment of the present invention, the edge of the lower shell converges toward the middle to form a first step surface, and the edge of the upper shell expands outward to form a second step surface. When the upper shell is covered on the lower shell, the first step surface and the second step surface are in contact.

[0013] In one embodiment of the present invention, the edge of the lower shell is concave to form a mounting groove, and the latch is cooperatingly disposed in the mounting groove.

[0014] In one embodiment of the present invention, a second sound insulation cotton layer is provided on the inner side wall of the installation groove.

[0015] In one embodiment of the present invention, the latch includes a pin body and at least two connecting pins connected to the pin body, each connecting pin passes through the mounting groove and is fixed by an R-shaped pin, and the screw is fixedly connected to the pin body.

[0016] In one embodiment of the present invention, a first connecting pin and a second connecting pin are vertically provided at both ends of the pin body, and a first U-shaped groove and a second U-shaped groove are respectively provided on the first connecting pin and the second connecting pin, and the groove depth directions of the first U-shaped groove and the second U-shaped groove are perpendicular to the axial direction of the pin body.

[0017] In one embodiment of the present invention, the groove bottom of the installation groove is respectively provided with pin through holes that cooperate with the first connecting pin and the second connecting pin.

[0018] In one embodiment of the present invention, the width direction of the first U-shaped groove is perpendicular to the width direction of the second U-shaped groove, and a pair of pin holes are respectively provided on the two side groove plates of the first U-shaped groove and the two side groove plates of the second U-shaped groove, and the R-shaped pin passes through the pair of pin holes to respectively fix the first connecting pin and the second connecting pin.

[0019] To achieve the above-mentioned object and other related objects, the present invention also provides an air suspension system, including an air supply unit and the above-mentioned reusable acoustic package, wherein the air supply unit is installed in the installation cavity of the acoustic package.

[0020] The beneficial technical effects of the present invention include at least:

[0021] (1) A reusable acoustic package of the present invention includes a shell and a locking mechanism, a latch is arranged in a connection cavity formed by an upper shell and a lower shell, the latch and the upper shell are fixedly connected by a pin, and the latch and the lower shell are fixedly connected by a screw. It can be seen that the latch is not directly connected to the shell. With the removal of the latch of the locking mechanism, the connection between the upper shell and the lower shell also disappears. Therefore, the reusable acoustic package of the present invention connects the upper shell and the lower shell by a latch. When there is a need for disassembly, it only needs to remove the connection between the latch and the upper shell and the lower shell to open the acoustic package. The upper shell and the lower shell are not damaged and can continue to be reused, thereby realizing the reuse of the acoustic package and greatly reducing the use cost of the acoustic package.

[0022] (2) A reusable acoustic package of the present invention has an edge of a lower shell that converges toward the middle to form a first step surface, and an edge of an upper shell that expands outward to form a second step surface. The upper shell is buckled on the lower shell so that the first step surface and the second step surface fit together. The edge of the lower shell is designed as a stepped mating section with a slope that contracts inward, and the edge of the upper shell is designed as a stepped mating section with a slope that expands outward, so that the lower shell and the upper shell have a guiding and limiting effect during assembly, and there is no need to add a structure that limits the mating stroke of the lower shell and the upper shell, so assembly is convenient. In addition, the inward contraction of the edge of the lower shell makes the upper shell smaller by an equal distance toward the middle than the traditional upper shell, which is more compact in space and more advantageous in layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a reusable acoustic package provided by one embodiment of the present invention;

[0024] Figure 2 Schematic diagram of the assembly of the upper shell and the lower shell provided in one embodiment of the present invention Figure 1 ;

[0025] Figure 3 Schematic diagram of the assembly of the upper shell and the lower shell provided in one embodiment of the present invention Figure 2 ;

[0026] Figure 4 A schematic diagram of the structure of a latch provided in one embodiment of the present invention;

[0027] Figure 5 A schematic diagram of a mounting groove provided with a latch hole according to an embodiment of the present invention;

[0028] Figure 6 An assembly principle diagram of an R-shaped pin and a U-shaped groove provided in one embodiment of the present invention;

[0029] Figure 7 Schematic diagram of connecting the upper shell and the lower shell using projection welding nuts in the prior art Figure 1 ;

[0030] Figure 8 Schematic diagram of connecting the upper shell and the lower shell using projection welding nuts in the prior art Figure 2 .

[0031] Component Symbols:

[0032] Locking mechanism 1, latch 11, threaded hole 111, first connecting pin 12, first U-shaped groove 121, second connecting pin 13, second U-shaped groove 131, R-shaped pin 14, screw 15, upper shell 21, second step surface 211, lower shell 22, first step surface 221, mounting groove 222, pin through hole 2221, first sound insulation cotton layer 31, second sound insulation cotton layer 32, projection welding nut 4. DETAILED DESCRIPTION

[0033] The following is an explanation of the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the features in the following embodiments and the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific embodiments, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0034] See also Figures 1 to 8. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0035] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are familiar to those skilled in the art and the description of the present invention, and any method, device and material of the prior art similar or equivalent to the method, device and material in the embodiments of the present invention can also be used to implement the present invention.

[0036] It should be noted that the acoustic package is an acoustic material package designed to achieve the NVH performance of the whole vehicle, such as front surround sound insulation pads, carpets, engine hood insulation cotton, ceiling sound-absorbing cotton, spare tire cover, etc.; the acoustic package is a means of reasonably using the transmission path from the vehicle noise source (powertrain, assembly accessories, transmission system, intake and exhaust, tire noise, etc.) to the interior of the car, and is a practical method to effectively block the transmission of noise during the transmission process.

[0037] See also Figure 1-Figure 3 The present invention provides a reusable acoustic package, including a shell and a locking mechanism 1, the shell including an upper shell 21 and a lower shell 22, the edge cover of the upper shell 21 is arranged on the outside of the lower shell 22, and the side wall of the upper shell 21 and the side wall of the lower shell 22 are enclosed to form a connecting cavity; the locking mechanism 1 includes a latch 11 and a screw 15, the latch 11 is arranged in the connecting cavity, the latch 11 passes through the lower shell 22 corresponding to the connecting cavity and is fixed by a pin, the screw 15 passes through the upper shell 21 corresponding to the connecting cavity and is fixedly connected to the latch 11, so that the upper shell 21 and the lower shell 22 are connected to form a sealed installation cavity.

[0038] The upper shell 21 and the lower shell 22 are connected by the latch 11 to form a sealed installation cavity. The latch 11 is arranged in the connection cavity formed by the upper shell 21 and the lower shell 22. The latch 11 and the upper shell 21 are fixedly connected by a pin, and the latch 11 and the lower shell 22 are fixedly connected by a screw 15. It can be seen that the latch 11 is not directly connected to the shell. With the removal of the latch 11 of the locking mechanism, the connection between the upper shell 21 and the lower shell 22 also disappears. Therefore, the reusable acoustic package of the present invention connects the upper shell 21 and the lower shell 22 by the latch 11. When there is a need for disassembly, it is only necessary to remove the connection between the latch 11 and the upper shell 21 and the lower shell 22 to open the acoustic package. The upper shell 21 and the lower shell 22 are not damaged and can continue to be reused, which realizes the reuse of the acoustic package and greatly reduces the use cost of the acoustic package.

[0039] In one embodiment of the present invention, a first sound insulation cotton layer 31 is sandwiched between the upper shell 21 and the lower shell 22. A second sound insulation cotton layer 32 is disposed on the inner side wall of the installation groove 222.

[0040] It should be noted that the sound insulation cotton of the first sound insulation cotton layer 31 and the second sound insulation cotton layer 32 is a material used to reduce noise and improve acoustic performance. It is usually made of natural or synthetic fibers and has good sound absorption and sound insulation performance. The installation method of the sound insulation cotton varies depending on the specific application, and usually includes gluing and clamping. The clamping installation is to clamp the sound insulation cotton between two structural layers (such as in a wall).

[0041] See also Figure 2 In one embodiment of the present invention, the edge of the lower shell 22 converges toward the middle to form a first step surface 221, and the edge of the upper shell 21 expands outward to form a second step surface 211. The upper shell 21 is buckled on the lower shell 22 so that the first step surface 221 and the second step surface 211 are in close contact.

[0042] It should be noted that the edge of the lower shell 22 is designed as a stepped matching section with a slope that shrinks inwards, and the edge of the upper shell 21 is designed as a stepped matching section with a slope that expands outwards, so that the lower shell 22 and the upper shell 21 have a guiding effect and a limiting effect during assembly, and there is no need to add a structure to limit the matching stroke of the lower shell 22 and the upper shell 21, which is convenient for assembly. In addition, the shrinkage of the edge of the lower shell 22 makes the upper shell 21 smaller than the traditional upper shell by an equal distance to the middle, which is more compact in space and more advantageous in layout.

[0043] In one embodiment of the present invention, the edge of the lower shell 22 is concave to form a mounting groove 222, and the latch 11 is arranged in the mounting groove 222. The latch 11 includes a pin body and at least two connecting pins connected to the pin body, each connecting pin passes through the mounting groove 222 and is fixed by an R-shaped pin 14, and the screw 15 is fixedly connected to the pin body. The upper shell 21 and the lower shell 22 are assembled at the connecting portion to form a sealed installation cavity.

[0044] See also Figure 4 and Figure 5 In one embodiment of the present invention, the first connecting pin 12 and the second connecting pin 13 are respectively vertically disposed at both ends of the pin body, and the first connecting pin 12 and the second connecting pin 13 are respectively provided with a first U-shaped groove 121 and a second U-shaped groove 131, and the groove depth direction of the first U-shaped groove 121 and the second U-shaped groove 131 are both perpendicular to the axial direction of the pin body. The bottom of the installation groove 222 is respectively provided with pin through holes 2221 that cooperate with the first connecting pin 12 and the second connecting pin 13.

[0045] It should be noted that the first connecting pin 12 and the second connecting pin 13 are integrally formed with or fixedly connected to the latch 11 .

[0046] See also Figure 6 In one embodiment of the present invention, the width direction of the first U-shaped groove 121 is perpendicular to the width direction of the second U-shaped groove 131, and a pair of pin holes are respectively opened on the two side groove plates of the first U-shaped groove 121 and the two side groove plates of the second U-shaped groove 131, and the R-shaped pin 14 passes through the pair of pin holes to fix the first connecting pin 12 and the second connecting pin 13 respectively.

[0047] It should be noted that the width direction of the first U-shaped groove 121 is perpendicular to the width direction of the second U-shaped groove 131 of the second connecting pin 13, which can better prevent the rotation of the plug 11 when it is fixed by the R-shaped pin 14. The R-shaped pin 14 passes through a pair of pin holes and is respectively fixed at the notch ends of the U-shaped groove. It is simple to operate and occupies less space than the traditional projection welding nut 4 fixing method. The R-shaped pin 14 and the notch end of the U-shaped groove form a locking point that is not easy to fall off. After assembly, the plug 11 can be fixed to the lower shell 22 by pins.

[0048] To achieve the above and other related purposes, the present invention also provides an air suspension system, including an air supply unit and the above reusable acoustic bag, wherein the air supply unit is installed in the installation cavity of the acoustic bag. The above reusable acoustic bag can be installed on the bottom of the vehicle.

[0049] In summary, the use and disassembly process of the lightweight acoustic package of this invention is as follows:

[0050] First, the air supply unit is fixedly installed on the lower shell 22, and then the plug 11 is arranged in the installation groove 222 of the lower shell 22. The first connecting pin 12 and the second connecting pin 13 respectively pass through the pin through-holes 2221 corresponding to the bottom of the installation groove 222, so that the two side groove plates of the first U-shaped groove 121 of the first connecting pin 12 and the two side groove plates of the second U-shaped groove 131 of the second connecting pin 13 extend to the inner side wall of the lower shell 22, and a pair of pin holes are opened on the two side groove plates. The R-shaped pin 14 passes through a pair of pin holes and is fixed to the notch end of the U-shaped groove, so that the first connecting pin 12 and the second connecting pin 13 are pin-fixed on the lower shell 22, that is, the plug 11 and the lower shell 22 are pin-fixed. Finally, the screw 15 passes through the edge of the upper shell 21 and cooperates with the threaded hole 111 on the plug 11 to be fixedly connected, so that the plug 11 and the upper shell 21 are threadedly fixedly connected. Therefore, the upper shell 21 and the lower shell 22 are connected at the connecting part to form a sealed installation cavity.

[0051] When the air supply unit in the installation cavity needs to be repaired or replaced, the acoustic package can be opened by simply loosening and removing the screw 15, and then the R-shaped pin 14 on the inner side of the upper shell 21 can be pulled out to remove the plug 11 to complete the disassembly of the acoustic package. Since the threaded hole is provided in the plug 11, the upper shell 21 and the lower shell 22 are not involved, so the upper shell 21 and the lower shell 22 can continue to be reused, and at most small parts such as the plug 11, screw 15, and R-shaped pin 14 can be replaced, and the upper shell 21 and the lower shell 22 can be reassembled to form the acoustic package again.

[0052] The flow chart and block diagram in the accompanying drawings illustrate the possible implementation architecture, function and operation of the method and computer program product according to various embodiments of the present invention. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the module, program segment, or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0053] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A reusable acoustic bag, characterized in that: include: A shell, the shell comprising an upper shell and a lower shell, the edge of the upper shell is covered on the outside of the lower shell, and the side wall of the upper shell and the side wall of the lower shell are enclosed to form a connecting cavity; as well as The locking mechanism includes a latch and a screw, wherein the latch is arranged in the connecting cavity, the latch passes through the lower shell corresponding to the connecting cavity and is fixed by a pin, and the screw passes through the upper shell corresponding to the connecting cavity and is fixedly connected to the latch, so that the upper shell and the lower shell are connected to form a sealed installation cavity.

2. The reusable acoustic bag according to claim 1, characterized in that A first sound insulation cotton layer is sandwiched between the upper shell and the lower shell.

3. The reusable acoustic bag according to claim 2, characterized in that The edge of the lower shell body converges toward the middle thereof to form a first step surface, and the edge of the upper shell body expands outward to form a second step surface. When the upper shell body is covered on the lower shell body, the first step surface and the second step surface are in contact with each other.

4. The reusable acoustic bag according to claim 3, characterized in that The edge of the lower shell is concave to form a mounting groove, and the latch is arranged in the mounting groove.

5. The reusable acoustic bag according to claim 4, characterized in that A second sound insulation cotton layer is provided on the inner side wall of the installation groove.

6. The reusable acoustic bag according to claim 5, characterized in that The latch includes a pin body and at least two connecting pins connected to the pin body, each of the connecting pins passes through the mounting groove and is fixed by an R-shaped pin, and the screw is fixedly connected to the pin body.

7. The reusable acoustic bag according to claim 6, characterized in that A first connecting pin and a second connecting pin are respectively vertically provided at both ends of the pin body, and a first U-shaped groove and a second U-shaped groove are respectively provided on the first connecting pin and the second connecting pin, and the groove depth directions of the first U-shaped groove and the second U-shaped groove are both perpendicular to the axial direction of the pin body.

8. The reusable acoustic bag according to claim 7, characterized in that The groove bottom of the installation groove is respectively provided with pin through holes that cooperate with the first connecting pin and the second connecting pin.

9. The reusable acoustic bag according to claim 8, characterized in that The width direction of the first U-shaped groove is perpendicular to the width direction of the second U-shaped groove, and a pair of pin holes are respectively opened on the two side groove plates of the first U-shaped groove and the two side groove plates of the second U-shaped groove, and the R-shaped pin passes through the pair of pin holes to fix the first connecting pin and the second connecting pin respectively.

10. An air suspension system, comprising an air supply unit, characterized in that: It also comprises the reusable acoustic pack according to any one of claims 1 to 9, wherein the air supply unit is installed in the installation cavity of the acoustic pack.

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