A curved bag type vibration isolation foot pad

Abstract

The present invention provides a curved bag type vibration isolation foot pad, comprising a rigid base, a rigid top seat and an elastic body sealed between the rigid base and the rigid top seat, a closed space is formed between the elastic body and the rigid base and the rigid top seat, an air nozzle for inflating or deflating the closed space is provided on the rigid base, the rigid top seat or the elastic body, and a curved air bag protruding outward is provided on the elastic body. The present invention adopts the above structure, and can be directly supported and connected with the bottom of the compressor through the rigid top seat, so that it has a good rigid connection effect, thereby improving the support effect on the compressor, and the elastic body is provided with a curved air bag, thereby improving the elastic deformation ability of the elastic body to improve the adjustment range of its air pressure and expansion degree.

Description

[Technical field]

[0001] The invention relates to the technical field of household appliances such as refrigeration equipment and washing machines, and in particular to a curved bag type vibration isolation foot pad suitable for air conditioner compressors. [Background technology]

[0002] The vibration isolation pads of the compressor are essential key components of the air conditioning system. During the operation of the compressor, the unbalanced rotation of the motor and the pulsation of the refrigerant will cause the vibration of the whole machine and generate noise, thereby reducing the quietness of the air conditioner. The vibration isolation pads of the compressor with appropriate stiffness design can effectively reduce the vibration of the compressor and the noise of the whole machine. Therefore, the vibration isolation pads of the compressor with appropriate stiffness have a very important influence on reducing the noise and vibration of the air conditioning system.

[0003] At present, the vibration isolation pads of domestic compressors generally adopt a pure rubber pad structure, and its stiffness cannot be adjusted. In the experimental research on the influence of compressor vibration isolation pads on the vibration isolation performance of compressors and its stiffness design and matching work, it is necessary to replace rubber pads of different types or different stiffnesses in multiple rounds to complete the matching of rubber pads, which makes the matching selection of pads difficult, the test cycle is long, and the matching efficiency of test and design is low.

[0004] The invention patent application with application number 201910938390.X (publication number CN 110594343A) discloses a vibration isolation foot pad for an air-conditioning compressor with adjustable stiffness to reduce the difficulty of performance parameter matching design and improve the matching efficiency of test and design, which includes a rigid base for connecting to the bottom plate of the air conditioner and a rubber member sealed to the top of the rigid base for connecting to the bottom of the compressor, a closed space is formed between the rubber member and the rigid base, and a gas nozzle for inflating or deflating the closed space is provided on the side of the rigid base. Its stiffness does not show regular characteristics with the change of air pressure, and its rubber member is straight-cylindrical, and the adjustment range of its air pressure and expansion degree is also small. [Summary of the invention]

[0005] The technical problem to be solved by the present invention is to provide a curved bag type vibration isolation foot pad which can improve the supporting effect and the air pressure adjustment range.

[0006] The object of the present invention is achieved in that:

[0007] A curved airbag-type vibration isolation foot pad comprises a rigid base, a rigid top seat and an elastomer sealed between the rigid base and the rigid top seat, a closed space is formed between the elastomer, the rigid base and the rigid top seat, an air nozzle for inflating or deflating the closed space is provided on the rigid base, the rigid top seat or the elastomer, and a curved airbag protruding outward is provided on the elastomer.

[0008] The present invention adopts the above structure, and can directly support and connect with the bottom of the compressor through the rigid top seat, so that it has a good rigid connection effect, thereby improving the support effect on the compressor, and the elastomer is provided with a bending airbag, thereby improving the elastic deformation ability of the elastomer to increase the adjustment range of its air pressure and expansion degree. Compared with the traditional technology of replacing and testing different rubber foot pads in multiple rounds to match the mechanical performance parameters of the foot pads, the present invention adjusts the internal air pressure of the vibration isolation foot pad by inflating and deflating the enclosed space with an air nozzle to adjust the mechanical performance parameters of the elastomer, thereby achieving the purpose of quickly adjusting the stiffness of the vibration isolation foot pad, reducing the installation and disassembly time of the vibration isolation foot pad, avoiding the influence of disassembly and installation on the test data, and thus greatly improving the test efficiency and the accuracy of the test data. Moreover, the vibration isolation foot pads of the present invention only need to be installed once and do not need to be replaced during the entire subsequent testing process. Instead, the inflation device directly adjusts the internal air pressure of the vibration isolation foot pads through the air nozzle to adjust the stiffness of the foot pads in real time. This can reduce the time for test personnel to disassemble and install the vibration isolation foot pads in high temperature or high cold experimental environments, thereby greatly reducing the work intensity of the test personnel and having good environmental friendliness.

[0009] In a curved bag type vibration isolation foot pad as described above, a lower hoop is provided on the top of the rigid base, an upper hoop is provided on the bottom of the rigid top seat, the elastomer is sealed and connected between the upper hoop and the lower hoop, and the curved airbag is clamped between the upper hoop and the lower hoop, so that the curved airbag can be elastically deformed between the upper hoop and the lower hoop, thereby further increasing the expansion degree of the elastomer to increase the range of its adjustment stiffness.

[0010] As described above, a curved bag type vibration isolation foot pad has a connecting protrusion on the top of the rigid top seat, an upper connecting ring for connecting the upper hoop ring is provided on the bottom of the rigid top seat, and a hollow hole is provided in the middle of the connecting protrusion, thereby making it lightweight as a whole and improving the rigid connection between the compressor and the rigid top seat, thereby improving its supporting effect on the compressor.

[0011] In the curved bag type vibration isolation foot pad as described above, the rigid base is in a convex shape, a connecting hole is provided at the bottom of the rigid base, and a lower connecting ring for connecting the lower hoop ring is provided on the inner wall or the outer wall of the outer side of the rigid base. The rigid base of this structure has high strength, and the vibration isolation foot pad can be firmly connected and fixed to the bottom plate of the air conditioner outdoor unit through the connecting hole, so that the connection between the vibration isolation foot pad and the compressor and the air conditioner bottom plate is simple and reliable, thereby exerting a good vibration isolation effect of the foot pad.

[0012] In the curved bag type vibration isolation foot pad as described above, the elastomer is made of rubber vulcanization, the lower hoop ring and the upper hoop ring are made of hard materials, the contact surfaces between the elastomer and the lower hoop ring and the upper hoop ring are coated with hot vulcanized adhesive and connected together by vulcanization process. The process is mature and simple, easy to mass produce, low cost, high strength, long life and good connection stability.

[0013] The curved bag type vibration isolation foot pad as described above is characterized in that the rigid base and the rigid top seat are made of hard materials, the inner wall of the upper connecting ring is threadedly connected to the outer wall of the upper hoop ring, and the inner wall of the lower connecting ring is threadedly connected to the outer wall of the lower hoop ring, thereby improving the overall rigidity of the vibration isolation foot pad and reducing the impact of high temperature and high humidity and low temperature and low humidity environments.

[0014] In the curved bag type vibration isolation foot pad as described above, the upper end of the upper hoop ring and the lower end of the lower hoop ring are respectively provided with an upper end cover and a lower end cover abutting against the upper end and the lower end of the elastic body, so as to prevent the upper end and the lower end of the elastic body from becoming force concentration points and being damaged by the air pressure generated by the gas in the enclosed space to cause air leakage.

[0015] The curved bag type vibration isolation foot pad as described above is characterized in that the inner walls of the upper end cover and the lower end cover are flush with the inner wall of the elastomer, thereby further ensuring the stability and reliability of the sealing connection between the elastomer and the upper hoop ring and the lower hoop ring.

[0016] In the curved bag type vibration isolation foot pad as described above, the outer side wall of the connecting protrusion is provided with an external thread, thereby further ensuring the connection stability and reliability between the rigid top seat and the compressor.

[0017] In the curved bag type vibration isolation foot pad as described above, the lower side of the lower connecting ring is provided with an air nozzle mounting hole which is communicated with the enclosed space and is used for mounting the air nozzle, thereby realizing rapid inflation and deflation of the enclosed space.

Brief Description of the Drawings

[0018] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0019] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the elastic body of the present invention being sealedly connected to the upper hoop ring and the lower hoop ring;

[0021] Figure 3 It is a structural schematic diagram of the rigid top seat of the present invention;

[0022] Figure 4It is a structural schematic diagram of the rigid base of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the present invention. [Specific implementation method]

[0024] A curved airbag type vibration isolation foot pad includes a rigid base 1, a rigid top seat 2, and an elastic body 3 sealed between the rigid base 1 and the rigid top seat 2, a closed space 4 is formed between the elastic body 3, the rigid base 1 and the rigid top seat 2, an air nozzle 5 for inflating or deflating the closed space 4 is provided on the rigid base 1, the rigid top seat 2 or the elastic body 3, and a curved airbag 31 protruding outward is provided on the elastic body 3. The number of the curved airbags 31 can be 1, 2, 3 or even more.

[0025] In order to improve the elastic deformation ability of the bending airbag 31 and further improve the adjustment range of the expansion degree of the elastomer 3 to increase the range of its adjustment stiffness, a lower hoop ring 6 is provided on the top of the rigid base 1, and an upper hoop ring 7 is provided on the bottom of the rigid top seat 2. The elastomer 3 is sealed between the upper hoop ring 7 and the lower hoop ring 6, and the bending airbag 31 is clamped between the upper hoop ring 7 and the lower hoop ring 6.

[0026] The top of the rigid top seat 2 is provided with a connecting protrusion 21 for connecting to the bottom of the compressor, the bottom of the rigid top seat 2 is provided with an upper connecting ring 22 for connecting to the upper hoop ring 7, and the middle of the connecting protrusion 21 is provided with a hollow hole 211, so that the overall weight is reduced and the rigid connection between the compressor and the rigid top seat 2 is further improved, thereby further improving its supporting effect on the compressor.

[0027] The rigid base 1 is in a convex shape, and a connection hole 11 is provided at the bottom of the rigid base 1 for connection with the bottom plate of the air conditioner, and a lower connection ring 12 for connection with the lower hoop ring 6 is provided on the inner side wall or the outer side wall of the outer side of the rigid base 1. In order to further facilitate the connection and improve the reliability of the connection, a thread can be provided in the connection hole 11 for threaded connection with a stud on the bottom plate of the air conditioner.

[0028] To further improve the firmness and sealing of the connection, the elastomer 3 is made of vulcanized rubber, the lower hoop 6 and the upper hoop 7 are made of hard material (preferably 45 steel), and the contact surfaces between the elastomer 3 and the lower hoop 6 and the upper hoop 7 are coated with a hot vulcanized adhesive and connected together by a vulcanization process. Specifically, Figure 2As shown, the upper end face and the inner circumference of the upper side of the lower hoop ring 6 and the lower end face and the inner circumference of the lower side of the upper hoop ring 7 are coated with a hot vulcanized adhesive, the upper end face and the outer circumference of the upper side of the curved airbag 31 are respectively connected to the lower end face and the inner circumference of the lower side of the upper hoop ring 7 through a vulcanization process, and the lower end face and the outer circumference of the lower side of the curved airbag 31 are respectively connected to the upper end face and the inner circumference of the upper side of the lower hoop ring 6 through a vulcanization process. The process is mature, simple, easy to mass produce, low cost, high strength, long life, and good connection stability.

[0029] The rigid base 1 and the rigid top seat 2 are made of hard material (preferably 45# steel), the inner side wall of the upper connecting ring 22 is threadedly connected to the outer side wall of the upper hoop ring 7, and the inner side wall of the lower connecting ring 12 is threadedly connected to the outer side wall of the lower hoop ring 6. To further ensure the sealing and the firmness of the connection, thread sealant can be applied to the threaded connection between the upper connecting ring 22 and the upper hoop ring 7 and the threaded connection between the lower connecting ring 1 and the lower hoop ring 6.

[0030] In order to prevent the upper and lower ends of the elastic body 3 from becoming the stress concentration points and being destroyed by the gas pressure generated by the gas in the enclosed space 4, causing air leakage at the sealed connection between the elastic body 4 and the upper hoop ring 7 and the lower hoop ring 6, the upper end of the upper hoop ring 7 and the lower end of the lower hoop ring 6 are respectively provided with an upper end cover 71 and a lower end cover 61 that abut against the upper end and the lower end of the elastic body 3. The enclosed space 4 is formed between the outer side of the convex rigid base 1, the inner side of the lower connecting ring 12, the inner side of the lower hoop ring 6, the inner side of the elastic body 3, the inner side of the upper hoop ring 7 and the inner side of the upper connecting ring 22, so that the cross section of the enclosed space 4 is an inverted "concave" shape as a whole, and the enclosed space 4 is a hollow ring structure, thereby further improving the strength and elastic deformation capacity of the elastic body 3 and increasing the range of stiffness adjustment of the vibration isolation foot pad.

[0031] To further ensure the stability and reliability of the sealed connection between the elastic body 3 and the upper hoop ring 7 and the lower hoop ring 6 , the inner walls of the upper end cover 71 and the lower end cover 61 are flush with the inner wall of the elastic body 3 .

[0032] To further ensure the stability and reliability of the connection between the rigid top seat 2 and the compressor, the outer wall of the connecting protrusion 21 is provided with an external thread 212 to connect and fix with the bottom of the compressor. The bottom of the compressor is provided with a support hole. When connecting, the connecting protrusion 21 passes through the support hole at the bottom of the compressor, and then the rigid top seat 2 is screwed with the external thread 212 by a nut to lock the compressor.

[0033] The air nozzle 5 can be installed on the rigid base 1, the rigid top base 2 or the elastic body 3, but is preferably installed on the side of the rigid base 1. In order to quickly inflate and deflate the enclosed space 3, the lower side of the lower connecting ring 12 is provided with an air nozzle installation hole 13 that communicates with the enclosed space 4 and is used to install the air nozzle 5. The air nozzle 5 can adopt an air nozzle of general structure, such as an air nozzle for automobile tires, but is not limited thereto.

[0034] When the present invention is used, 3 to 4 vibration isolation pads are generally arranged between the bottom of the compressor and the bottom plate of the outdoor unit of the air conditioner, but it is not limited thereto. Different air pressures are independently input into each curved bag type vibration isolation pad through an inflating device to independently adjust the stiffness of each vibration isolation pad. Under the actual operating conditions of the compressor, the vibration signals of the upper end (compressor part) and the lower end (part of the bottom plate of the outdoor unit of the air conditioner) of each vibration isolation pad are tested and recorded, as well as the stress signal of the bending part of the compressor piping close to the compressor side, so as to measure the vibration characteristics of the compressor under different working conditions. According to the mechanical performance parameters of the curved bag type vibration isolation pad corresponding to the optimal vibration characteristics of the compressor, the optimal mechanical performance parameters of the optimal rubber vibration isolation pad can be determined, thereby providing parameter references for the structural design and development of the rubber vibration isolation pad for mass production and installation. Compared with the traditional multiple rounds of replacement and testing of different rubber pads to match better pad mechanical performance parameters, the present invention can adjust the internal air pressure of the pad by inflating and exhausting the enclosed space 4 of the vibration isolation pad through the air nozzle 5, which has the advantage of quickly adjusting the pad stiffness. When the present invention is used for the rapid matching and selection of rubber vibration isolation pads for compressors, it can reduce the installation and disassembly time of the vibration isolation pads, and also reduce the impact of disassembly and installation on test data, effectively improving the test efficiency and the accuracy of the test results, while reducing the time for test personnel to disassemble and install the vibration isolation pads in high-temperature or high-cold laboratories, greatly improving the test environment and conditions for test personnel, and having good promotion value.

Claims

1. A curved bag type vibration isolation foot pad, characterized in that The invention comprises a rigid base (1), a rigid top base (2), and an elastic body (3) sealed between the rigid base (1) and the rigid top base (2); a closed space (4) is formed between the elastic body (3), the rigid base (1) and the rigid top base (2); an air nozzle (5) for inflating or deflating the closed space (4) is provided on the rigid base (1), the rigid top base (2) or the elastic body (3); and a curved air bag (31) protruding outward is provided on the elastic body (3); The top of the rigid base (1) is provided with a lower hoop (6), the bottom of the rigid top seat (2) is provided with an upper hoop (7), the elastic body (3) is sealedly connected between the upper hoop (7) and the lower hoop (6), and the bending airbag (31) is clamped between the upper hoop (7) and the lower hoop (6); The elastic body (3) is made of rubber vulcanization, the lower hoop ring (6) and the upper hoop ring (7) are made of hard material, and the contact surfaces between the elastic body (3) and the lower hoop ring (6) and the upper hoop ring (7) are coated with a hot vulcanization adhesive and connected together by a vulcanization process; The upper end of the upper hoop ring (7) and the lower end of the lower hoop ring (6) are respectively provided with an upper end cover (71) and a lower end cover (61) which abut against the upper end and the lower end of the elastic body (3); The inner walls of the upper end cover (71) and the lower end cover (61) are flush with the inner wall of the elastic body (3); The top of the rigid top seat (2) is provided with a connecting protrusion (21), the bottom of the rigid top seat (2) is provided with an upper connecting ring (22) for connecting with the upper hoop ring (7), and the middle of the connecting protrusion (21) is provided with a hollow hole (211); The outer side wall of the connecting protrusion (21) is provided with an external thread (212).

2. The curved bag type vibration isolation foot pad according to claim 1, characterized in that The rigid base (1) is in a convex shape, a connection hole (11) is provided at the bottom of the rigid base (1), and a lower connection ring (12) for connecting the lower hoop ring (6) is provided on the inner side wall or the outer side wall of the outer side of the rigid base (1).

3. A curved bag type vibration isolation foot pad according to claim 2, characterized in that The rigid base (1) and the rigid top seat (2) are made of hard material, the inner side wall of the upper connecting ring (22) is threadedly connected to the outer side wall of the upper hoop ring (7), and the inner side wall of the lower connecting ring (12) is threadedly connected to the outer side wall of the lower hoop ring (6).

4. The curved bag type vibration isolation foot pad according to claim 2, characterized in that The lower side of the lower connecting ring (12) is provided with a gas nozzle mounting hole (13) which is in communication with the enclosed space (4) and is used for mounting the gas nozzle (5).

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