A two-stage vibration isolation nylon compressor support

Abstract

The utility model discloses a two-stage vibration isolation nylon compressor support, including by the nylon material injection molding and form upper support and lower support, upper support is close to the side of lower support and is provided with three connecting arms, is provided with a primary bushing on connecting arm, is connected with each other through primary bushing between upper support and lower support, is provided with three mounting holes on lower support, is provided with secondary bushing in all in mounting hole, through the position arrangement of upper support and lower support in actual application, again cooperate primary bushing and secondary bushing and carry out series vibration damping, make system form 12 degrees of freedom vibration isolation system, solve the air conditioner compressor support of prior art is traditional aluminum support, and the use cost is high, and the weight is heavy, can improve the problem of air conditioner compressor support production cost, also solve the existing support for monopolar vibration isolation, and vibration energy can only decay through a bushing, and the remaining vibration is easy to transmit to the vehicle body, and the vibration isolation effect is limited, lead to the technical problem of poor NVH performance.

Description

Technical Field

[0001] This utility model belongs to the field of compressor bracket technology, specifically, it relates to a two-stage vibration isolation nylon compressor bracket. Background Technology

[0002] Air conditioning compressor brackets are key components used to fix and support air conditioning compressors. Existing air conditioning compressor brackets are usually made of high-strength metal materials (such as galvanized steel plates or aluminum alloys), which have the characteristics of corrosion resistance, vibration resistance and load-bearing stability. During vehicle operation, the vibration of the compressor will be transmitted to the vehicle body, affecting the comfort of passengers.

[0003] Patent CN116557262A discloses an L-shaped single-stage vibration isolation compressor mounting bracket, which includes an aluminum bracket with an upper mounting hole and a lower mounting hole. Rubber bushing assemblies are installed in both the upper and lower mounting holes. By adding a vibration-damping rubber bushing assembly at each of the three aluminum bracket mounting points connected to the compressor, the above structure effectively attenuates the vibration generated by the compressor excitation source and improves NVH comfort.

[0004] However, in the above-mentioned patented technical solutions, the brackets used are all made of aluminum. Traditional aluminum brackets are expensive and heavy. In automobile manufacturing, the extensive use of aluminum brackets will increase production costs, thus putting pressure on automobile manufacturers. In addition, the air conditioning compressor bracket in the above-mentioned patented technical solutions is a single-stage vibration isolation. Single-stage vibration isolation has only 6 rigid body modal degrees of freedom. Vibration energy can only be attenuated through a single bushing. The remaining vibration is easily transmitted to the vehicle body, resulting in poor NVH (noise, vibration, and harshness) performance and limited vibration isolation effect, which has certain limitations. Utility Model Content

[0005] One of the objectives of this utility model is to provide a two-stage vibration isolation nylon compressor bracket, which solves the technical problem that the existing air conditioning compressor bracket is a traditional aluminum bracket, which has high cost, heavy weight, and will increase production costs, thus putting pressure on the cost of car manufacturing for automobile manufacturers.

[0006] The second objective of this utility model is to provide a two-stage vibration isolation nylon compressor bracket, which solves the technical problem in the prior art that the air conditioning compressor bracket is a single-stage vibration isolation, the vibration energy can only be attenuated through a bushing, the remaining vibration is easily transmitted to the vehicle body, the vibration isolation effect is limited, resulting in poor NVH performance.

[0007] The objective of this utility model can be achieved through the following technical solutions: A secondary vibration-isolated nylon compressor bracket includes an upper bracket and a lower bracket injection molded from nylon material; three connecting arms arranged in a triangular pattern are provided on the side of the upper bracket near the lower bracket; a primary bushing is provided on the connecting arms; the upper bracket and the lower bracket are connected to each other through the primary bushing; three mounting holes arranged in a triangular pattern are provided on the lower bracket; a secondary bushing is provided in each mounting hole.

[0008] Furthermore, the lower support is provided with a corresponding connecting ring at each position of the primary bushing. The connecting ring is sleeved on the primary bushing and fits against the outer surface of the primary bushing.

[0009] Furthermore, the upper bracket has multiple through threaded holes on the side away from the lower bracket.

[0010] Furthermore, a fixing rod is inserted at the center of the primary bushing, with one end of the fixing rod extending into the connecting arm and the other end extending into the connecting ring.

[0011] Furthermore, the fixing rod is provided with limiting plates at positions corresponding to both sides of the connecting ring, and the limiting plate on the side closer to the connecting arm is in contact with the connecting arm.

[0012] Furthermore, a nut is threaded onto the end of the fixing rod furthest from the connecting arm.

[0013] Furthermore, the connecting part of the secondary bushing is interference-fitted with the mounting hole.

[0014] The beneficial effects of this utility model are: 1. This utility model, through the vertical arrangement of the upper and lower brackets in practical applications, and the series vibration reduction achieved by pressing the primary and secondary bushings into the upper and lower brackets with tooling, forms a 12-degree-of-freedom vibration isolation system. This significantly improves the high-frequency vibration isolation effect compared to the traditional 6-degree-of-freedom layout of a single-stage bracket. It solves the technical problem in the prior art where the air conditioning compressor bracket is a single-stage vibration isolation device, the vibration energy can only be attenuated through one bushing, the remaining vibration is easily transmitted to the vehicle body, the vibration isolation effect is limited, and the NVH performance is poor.

[0015] 2. Both the upper and lower brackets in this utility model are injection molded from nylon material. Compared with aluminum material, nylon has significant advantages in terms of lightness and low cost, which optimizes the production cost of the air conditioning compressor bracket and solves the technical problem that the existing air conditioning compressor bracket is a traditional aluminum bracket, which has high usage cost and heavy weight, thus increasing the production cost of the air conditioning compressor bracket and putting pressure on the cost of car manufacturing for automobile manufacturers.

[0016] 3. In this utility model, limit plates are provided on both sides of the primary bushing. When the compressor vibrates with a large amplitude, the limit plates form a hard limit through mechanical contact with the end face of the primary bushing, preventing the rubber bushing from failing due to excessive deformation. In addition, under normal working conditions, the limit plates can also prevent the primary bushing from elastically displacing, ensuring the vibration reduction effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the secondary bushing in this utility model; Figure 3 This is a schematic diagram of the overall structure of the lower support in this utility model; Figure 4 This is a schematic diagram of the overall structure of the upper support in this utility model; Figure 5 This is a schematic diagram of the secondary bushing in this utility model; Figure 6 This is a schematic diagram of the structure of the primary bushing in this utility model; The attached diagram lists the components represented by each number as follows: 1. Upper bracket; 11. Threaded hole; 12. Connecting arm; 2. Lower bracket; 21. Connecting ring; 22. Mounting hole; 3. Primary bushing; 31. Limiting plate; 32. Nut; 33. Fixing rod; 4. Secondary bushing; 41. Connecting part. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1 - Figure 6 As shown, a two-stage vibration-isolated nylon compressor bracket includes an upper bracket 1 and a lower bracket 2. The upper bracket 1 has multiple through threaded holes 11 on one side, which are used in conjunction with screws to connect the upper bracket 1 to the compressor. Three connecting arms 12 arranged in a triangular pattern are provided on the side of the upper bracket 1 near the lower bracket 2. Each connecting arm 12 has a through hole. A primary bushing 3 is installed inside the through hole of the connecting arm 12, and this primary bushing 3 is used to isolate the high-frequency vibration energy transmitted by the compressor.

[0020] Each of the lower support 2 and the first-stage bushing 3 has a corresponding connecting ring 21. The connecting ring 21 is fitted onto the first-stage bushing 3 and fits against the outer surface of the first-stage bushing 3. The upper support 1 and the lower support 2 are connected to each other through the first-stage bushing 3. A fixing rod 33 is inserted into the center of the first-stage bushing 3. One end of the fixing rod 33 extends into the connecting arm 12 and the other end extends into the connecting ring 21. Limiting plates 31 are provided on both sides of the fixing rod 33 corresponding to the connecting ring 21. The limiting plate 31 on the side closer to the connecting arm 12 fits against the connecting arm 12. The limiting plate 31 is used to reinforce and fix the position of the first-stage bushing 3. A nut 32 is threaded to the end of the fixing rod 33 away from the connecting arm 12. The fixing rod 33 and the nut 32 cooperate with each other to fix the limiting plate 31.

[0021] The lower bracket 2 has three triangularly distributed mounting holes 22; each mounting hole 22 is provided with a secondary bushing 4, which is used to attenuate residual low-frequency vibrations after being filtered by the primary bushing 3; the connecting part 41 on the secondary bushing 4 is interference-fitted with the mounting hole 22 to ensure connection rigidity; the end of the secondary bushing 4 away from the connecting part 41 is tightly fitted with the vehicle body mounting surface to form a floating support structure, which not only ensures the overall stability of the bracket, but also significantly reduces the vibration transmission rate to the vehicle body through the dual-stage vibration reduction mechanism.

[0022] It is worth noting here that the upper support 1 and the lower support 2 in this utility model are both injection molded from nylon material. Nylon is a synthetic polyamide material with excellent properties such as high strength, wear resistance, oil resistance and chemical corrosion resistance. It is lightweight and tough, can withstand large impact forces, and also has self-lubricating properties and good electrical insulation.

[0023] To facilitate understanding of the above-mentioned technical solution of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below: The operator first uses the threaded hole 11 and screws to connect the upper bracket 1 to the compressor body. Then, the operator uses a tool to press the primary bushing 3 into the connecting arm 12 of the upper bracket 1. Next, the operator aligns the connecting ring 21 of the lower bracket 2 with the primary bushing 3 and connects the upper and lower brackets 2 through the primary bushing 3. Then, the operator uses the limiting plates 31 set on both sides of the connecting ring 21 to fix the primary bushing 3 and uses nuts 32 to limit the limiting plates 31. Finally, the operator presses the secondary bushing into the mounting hole 22 of the lower bracket 2 to complete the assembly of the air conditioning compressor bracket.

[0024] In this invention, the upper bracket 1 and the lower bracket 2 are arranged vertically in practical applications. Then, the primary bushing 3 and the secondary bushing 4 are pressed into the upper bracket 1 and the lower bracket 2 respectively by tooling to achieve series vibration reduction, so that the system forms a 12-degree-of-freedom vibration isolation system. Compared with the traditional 6-degree-of-freedom layout of a single-stage bracket, the high-frequency vibration isolation effect is greatly improved. This solves the technical problem in the prior art that the air conditioning compressor bracket is a single-stage vibration isolation, the vibration energy can only be attenuated through a single bushing, the remaining vibration is easily transmitted to the vehicle body, the vibration isolation effect is limited, and the NVH performance is poor.

[0025] Furthermore, both the upper bracket 1 and the lower bracket 2 in this utility model are injection molded from nylon material. Compared with aluminum material, nylon has significant advantages in terms of lightness and low cost, which optimizes the production cost of the air conditioning compressor bracket and solves the technical problem that in the prior art, the air conditioning compressor bracket is a traditional aluminum bracket, which has high usage cost and heavy weight, which will increase the production cost of the air conditioning compressor bracket and thus bring manufacturing cost pressure to automobile manufacturers.

[0026] Furthermore, in this utility model, limit plates 31 are provided on both sides of the primary bushing 3. When the compressor vibrates with a large amplitude, the limit plates 31 form a hard limit through mechanical contact with the end face of the primary bushing 3, preventing the rubber bushing from failing due to excessive deformation. In addition, under normal working conditions, the limit plates 31 can also prevent the primary bushing 3 from elastically displacing, ensuring the vibration reduction effect.

[0027] It should be noted that, in this document, terms such as “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.

[0028] 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.

Claims

1. A two-stage vibration-damping nylon compressor bracket, characterized in that: It includes an upper bracket (1) and a lower bracket (2) made of nylon material by injection molding; the upper bracket (1) is provided with three connecting arms (12) arranged in a triangle on the side near the lower bracket (2); a primary bushing (3) is provided on the connecting arm (12); The upper bracket (1) and the lower bracket (2) are connected to each other by a primary bushing (3); the lower bracket (2) has three triangularly distributed mounting holes (22); each mounting hole (22) is provided with a secondary bushing (4).

2. The secondary vibration-damping nylon compressor bracket according to claim 1, characterized in that: The lower support (2) has a corresponding connecting ring (21) at the position of the first bushing (3). The connecting ring (21) is sleeved on the first bushing (3) and fits against the outer surface of the first bushing (3).

3. The secondary vibration-damping nylon compressor bracket according to claim 1, characterized in that: The upper bracket (1) has multiple through threaded holes (11) on the side away from the lower bracket (2).

4. The secondary vibration-damping nylon compressor bracket according to claim 2, characterized in that: A fixing rod (33) is inserted at the center of the primary bushing (3). One end of the fixing rod (33) extends into the connecting arm (12), and the other end extends into the connecting ring (21).

5. The secondary vibration-damping nylon compressor bracket according to claim 4, characterized in that: The fixing rod (33) is provided with limiting plates (31) on both sides of the connecting ring (21), and the limiting plate (31) on the side closer to the connecting arm (12) is in contact with the connecting arm (12).

6. The secondary vibration-damping nylon compressor bracket according to claim 4, characterized in that: The end of the fixing rod (33) away from the connecting arm (12) is threaded with a nut (32).

7. The secondary vibration-damping nylon compressor bracket according to claim 1, characterized in that: The connecting part (41) of the secondary bushing (4) is interference-fitted with the mounting hole (22).

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