Vibration reduction connecting support and vehicle

Abstract

The utility model relates to the technical field of compressors, in particular to a vibration reduction connecting support and a vehicle, which are used for connecting a vibration device and a frame body. The vibration reduction connecting support comprises a support body and a vibration isolation connecting device. The vibration isolation connecting devices are installed on the support body and comprise the first vibration isolation connecting device and the second vibration isolation connecting device. The first vibration isolation connecting device is used for being connected with the vibration device, the first vibration isolation connecting device comprises a first vibration isolation device and a second vibration isolation device, the first vibration isolation device is configured to be capable of generating elastic deformation in the first direction, and the second vibration isolation device is configured to be capable of generating elastic deformation in the second direction. The first direction and the second direction are perpendicular to each other or form an included angle; the second vibration isolation connecting device is used for being connected with the support body. The vibration reduction connecting support has good vibration reduction, noise reduction and frequency avoiding effects.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a vibration-damping connecting bracket and a vehicle. Background Art

[0002] When the engine of a fuel vehicle is idling and driving, the noise and vibration of the engine are usually relatively large. The electric motor has better quietness than the internal combustion engine, but with the popularization of new energy electrification, other noise problems will become prominent. The electric compressor is one of the main excitation sources in the car. In order to avoid the compressor vibration being transmitted to the car and causing noise, vibration and harshness (NVH) problems, the compressor is usually isolated by an adapter bracket or directly installed on the powertrain and isolated as a whole by a power mount. However, due to the increasing requirements for integration, the motor and subframe are required to be compactly arranged, and there is often no sufficient space for the compressor on the active side of the motor. Therefore, if the compressor is arranged in other positions, it is necessary to design a separate vibration isolation bracket for it to attenuate the vibration transmitted to the car body.

[0003] Since today's compressors tend to be high-speed and small-displacement, and can reach high speeds of more than 12,000 rpm, the current common adapter bracket connection or primary vibration isolation bracket alone can no longer meet the vibration isolation requirements of the compressor. If the high-frequency vibration / noise of the compressor is not well suppressed, it will be easily perceived by the occupants, affecting the occupants' riding experience. In addition, in order to meet the vehicle's safety collision regulations and standards, the compressor must be prevented from being impacted and affecting other devices such as the motor controller and high-voltage components, which limits the layout of the compressor, further limiting the design space of the compressor bracket. Therefore, it is necessary to provide a vibration-damping connection bracket that can perform frequency-avoiding and vibration-isolating operations on the high-speed and high-frequency bands of the compressor while ensuring that the existing design boundaries are met. Utility Model Content

[0004] In view of the above shortcomings of the prior art, the purpose of the utility model is to provide a vibration-damping connecting bracket and a vehicle with good frequency-avoiding, vibration-isolating and noise-reducing effects.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a vibration-damping connecting bracket for connecting a vibration device and a frame; the vibration-damping connecting bracket comprises:

[0006] The bracket body;

[0007] A vibration isolation connection device, mounted on the support body, the vibration isolation connection device comprising a first vibration isolation connection device and a second vibration isolation connection device;

[0008] The first vibration isolation connection device is used to connect the vibration device, and the first vibration isolation connection device includes a first vibration isolation device and a second vibration isolation device, the first vibration isolation device is configured to be able to generate elastic deformation along a first direction, and the second vibration isolation device is configured to be able to generate elastic deformation along a second direction, and the first direction and the second direction are arranged at an angle;

[0009] The second vibration isolation connection device is used to connect the frame.

[0010] As an optional embodiment of the utility model, the bracket body includes a bottom surface facing the bracket body when assembled; the first vibration isolation device and the second vibration isolation connection device are both arranged along a first direction perpendicular to the bottom surface;

[0011] Furthermore, the distance between the end of the first vibration isolation device mounted on the bracket body facing the bottom surface and the bottom surface is greater than a preset distance.

[0012] As an optional embodiment of the present invention, the first direction is a vertical direction and is perpendicular to the length direction of the frame; the second direction is perpendicular to the first direction and is parallel to the width direction of the frame.

[0013] As an optional embodiment of the present invention, a vibration isolation pad is provided on the bottom surface of the bracket body, and the vibration isolation pad is limited to the bottom surface by the second vibration isolation connection device.

[0014] As an optional embodiment of the present invention, a plurality of elastic protrusions are evenly spaced apart on at least one side surface of the vibration isolation pad.

[0015] As an optional embodiment of the present utility model, the first vibration isolation connection device is an eccentric structure, and the first vibration isolation connection device of the eccentric structure is assembled to be eccentrically arranged in the opposite direction of the gravity direction of the vibration device.

[0016] As an optional embodiment of the present utility model, the first vibration isolation connection device and the second vibration isolation connection device both include:

[0017] A connecting element, one end of which is provided with a limiting portion;

[0018] A vibration-damping bushing is sleeved and limitedly located on the connecting element, and one of the connecting element and the vibration-damping bushing is used to connect with the vibration device or the frame, and the other is used to connect with the support body;

[0019] The supporting element is arranged along the axial direction of the connecting element, and at least one of the supporting elements is located between the vibration-damping bushing and the connecting element and is limited by the limiting portion.

[0020] As an optional embodiment of the present invention, the stiffness of the vibration-damping bushing of the first vibration-damping connection device is less than or equal to the stiffness of the vibration-damping bushing of the second vibration-damping connection device.

[0021] As an optional embodiment of the present invention, the first direction is a vertical direction, and a guide portion is provided at one end of the first vibration isolation device facing the installation direction of the vibration device.

[0022] As an optional embodiment of the utility model, the support element includes an inner sleeve and an outer sleeve;

[0023] The inner sleeve is arranged between the vibration-damping bushing and the connecting element;

[0024] The outer sleeve is sleeved on the outer circumferential surface of the vibration-damping bushing, and the outer sleeve is used to be connected with the bracket body.

[0025] As an optional embodiment of the present utility model, the first vibration isolation connection device comprises at least one limit plate, and the limit plate is sleeved on the corresponding connection element;

[0026] Furthermore, the limiting plate is assembled to limit at least one end of the vibration-damping bushing close to the limiting portion within a predetermined range of movement along the axial direction of the connecting element.

[0027] As an optional embodiment of the utility model, the vibration-damping bushing of the first vibration-isolating connection device includes:

[0028] A vibration-damping inner cylinder, sleeved on the outer circumferential surface of the inner sleeve;

[0029] A vibration-damping outer cylinder is disposed in the outer sleeve and is limited by the limiting plate;

[0030] The annular overhanging wall connects the vibration-damping inner cylinder and the vibration-damping outer cylinder.

[0031] As an optional embodiment of the present invention, at least one end of the vibration-damping outer cylinder is evenly provided with concave-convex parts, and the concave-convex parts are arranged along the radial direction of the vibration-damping outer cylinder.

[0032] As an optional embodiment of the utility model, the first vibration isolation device and / or the second vibration isolation device comprises at least one vibration-damping pad;

[0033] The vibration-damping pad is sleeved on the corresponding connecting element, located at the end of the vibration-damping bushing and limited by the corresponding limiting plate.

[0034] In order to achieve the above-mentioned object and other related objects, the utility model provides a vehicle including the vibration-damping connecting bracket.

[0035] In summary, the utility model connects the vibration device and the frame through a vibration-damping connecting bracket. The vibration-damping connecting bracket includes a bracket body and a first vibration-isolating connecting device and a second vibration-isolating connecting device installed on the bracket body. The first vibration-isolating connecting device is used to connect the vibration device, and the second vibration-isolating connecting device is used to connect the frame, thereby achieving a better frequency-avoiding effect; the vibration excitation of the vibration device is transmitted to the bracket body after being reduced by the first vibration-isolating connecting device, and the vibration excitation transmitted to the bracket body is transmitted to the frame after being reduced by the second vibration-isolating connecting device, thereby forming secondary vibration isolation in a limited layout space, and the first vibration-isolating connecting device and the second vibration-isolating connecting device are both installed on the bracket body, and are necessarily misaligned. The arrangement changes the attachment point of the vibration excitation, which can not only ensure the mode of the bracket body, but also reduce the excitation transmitted by the vibration device at high frequency, and better avoid the frequency of the vibration device, effectively reducing the vibration excitation and noise of the vibration device transmitted to the frame; at the same time, the first vibration isolation connection device is divided into at least a first vibration isolation device and a second vibration isolation device, the first vibration isolation device can produce elastic deformation along the first direction, and the second vibration isolation device can produce elastic deformation along the second direction. On the one hand, it can increase the connection stability between the bracket body and the vibration device, and on the other hand, it can weaken the vibration excitation of the vibration device in multiple directions, and can also improve the high-frequency frequency avoidance of the vibration device and reduce the transmission of vibration and noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 This is a schematic structural diagram of a vibration-damping connecting bracket connecting a vibration device and a frame according to an embodiment of the utility model;

[0038] Figure 2 This is a schematic diagram of the front structure of a vibration-damping connecting bracket according to an embodiment of the utility model;

[0039] Figure 3 This is a schematic diagram of the back structure of a vibration-damping connecting bracket according to an embodiment of the utility model;

[0040] Figure 4 An exploded view of a vibration-damping connecting bracket structure according to an embodiment of the utility model;

[0041] Figure 5 This is a schematic diagram of the structure of the bracket body according to an embodiment of the utility model;

[0042] Figure 6 This is a structural schematic diagram of a second vibration isolation device installed in a bracket body according to an embodiment of the utility model;

[0043] Figure 7 A cross-sectional view of a vibration-damping bushing structure of a second vibration isolation device according to an embodiment of the utility model;

[0044] Figure 8 This is a schematic diagram of the overall structure of a first vibration isolation device according to an embodiment of the utility model;

[0045] Fig. 9 It is a schematic diagram of the three-dimensional structure of the first anti-vibration bushing in one embodiment of the utility model;

[0046] Fig.10 A cross-sectional view of a first anti-vibration bushing structure according to an embodiment of the utility model;

[0047] Fig.11 This is a schematic diagram of the structure of a vibration isolation pad according to an embodiment of the utility model;

[0048] Fig.12 This is a schematic structural diagram of a second vibration isolation connection device installed in a bracket body according to an embodiment of the utility model;

[0049] Fig.13 A diagram showing the positional relationship between a vibration isolation bushing and a vibration isolation pad in a second vibration isolation connection device according to an embodiment of the utility model;

[0050] Fig.14 This is a schematic diagram of the structure of a vibration isolation bushing in a second vibration isolation connection device according to an embodiment of the utility model;

[0051] Component number description: vibration-damping connecting bracket 100, vibration device 200, frame 300, bracket body 1, weight-reducing hole 10, bottom surface 11, vibration-damping pad 12, elastic protrusion 121, vibration-damping connecting device 2, connecting element 21, limiting portion 211, guide portion 212, vibration-damping bushing 22, supporting element 23, inner sleeve 231, outer sleeve 232, first vibration-damping connecting device 3, limiting plate 301, vibration-damping pad 302 , the first vibration isolation device 31, the first vibration isolation bushing 3A, the first vibration damping inner tube 311A, the first vibration damping outer tube 312A, the first concave-convex portion 312A1, the first annular cantilever wall 313A, the second vibration isolation device 32, the second vibration isolation bushing 3B, the second vibration damping inner tube 321B, the second vibration damping outer tube 322B, the second concave-convex portion 322B1, the second annular cantilever wall 323B, the second vibration isolation connecting device 4, and the vibration isolation bushing 41. DETAILED DESCRIPTION

[0052] The following describes the implementation of the present invention through 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 implementations, 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 following embodiments and the features in 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 implementation schemes, 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.

[0053] See also Figures 1 to 14 . 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 utility model, 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 utility model, should still fall within the scope of the technical content disclosed by the utility model. 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 utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0054] 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 in accordance with the prior art mastery of those skilled in the art and the description of the present invention, and any prior art methods, equipment and materials similar or equivalent to the methods, equipment and materials in the embodiments of the present invention can also be used to implement the present invention.

[0055] like Figure 1 Or as shown in 2, the first direction is the Z direction and the second direction is the Y direction.

[0056] See also Figure 1-4 The utility model provides a vibration-damping connecting bracket 100, which is used to connect a vibration device 200 and a frame 300; the vibration-damping connecting bracket 100 includes a bracket body 1 and a vibration-isolating connecting device 2;

[0057] The vibration isolation connection device 2 is installed on the bracket body 1, and the vibration isolation connection device 2 includes a first vibration isolation connection device 3 and a second vibration isolation connection device 4;

[0058] The first vibration isolation connection device 3 is used to connect the vibration device 200. The first vibration isolation connection device 3 includes a first vibration isolation device 31 and a second vibration isolation device 32. The first vibration isolation device 31 is configured to generate elastic deformation along a first direction, and the second vibration isolation device 32 is configured to generate elastic deformation along a second direction. The first direction and the second direction are perpendicular to each other or are arranged at an angle.

[0059] The second vibration isolation connection device 4 is used to connect the frame 300 .

[0060] It should be noted that the vibration device 200 can be a compressor, motor or generator of an air conditioner, etc.; the frame 300 can be a power bracket crossbeam for installing a compressor in a vehicle, or a fixed sheet metal frame for installing a motor or generator; the bracket body 1 is generally made of metal material, such as a cast steel structure; the vibration isolation connection device 2 generally has a built-in vibration reduction element, such as a vibration reduction rubber material; the bracket body 1 is provided with a mounting hole for installing the vibration isolation connection device 2; the vibration isolation connection device 2 is provided with a plurality of vibration isolation connection devices 2, one or more of which are first vibration isolation connection devices 3, and one or more of which are second vibration isolation connection devices 4. It should be understood that the main deformation direction of the first vibration isolation device 31 is the first direction, and the main deformation direction of the second vibration isolation device 32 is the second direction. It should be understood that the first vibration isolation device 31 and the second vibration isolation device 32 can have other deformation directions. If rubber material is used, in addition to deformation in the main force direction, deformation in other directions may also exist. The first direction and the second direction are perpendicular to each other or are arranged at an angle. For example, the angle between the first direction and the second direction is 85°, 90°, 95° or other required angles.

[0061] In the present case, the vibration device 200 and the frame 300 are connected by a vibration-damping connecting bracket 100. The vibration-damping connecting bracket 100 includes a bracket body 1 and a first vibration isolation connecting device 3 and a second vibration isolation connecting device 4 installed on the bracket body 1. The first vibration isolation connecting device 3 is used to connect the vibration device 200, and the second vibration isolation connecting device 4 is used to connect the frame 300. The vibration excitation of the vibration device 200 is transmitted to the bracket body 1 after being reduced by the first vibration isolation connecting device 3. The vibration excitation on the bracket body 1 is then reduced by the second vibration isolation connecting device 4 and then transmitted to the frame 300, thereby forming secondary vibration isolation. In addition, the first vibration isolation connecting device 3 and the second vibration isolation connecting device 4 are both installed on the bracket body 1, and must be staggered, so that the attachment point of the vibration excitation is changed, which can ensure The mode of the bracket body 1 can be verified, and the excitation transmitted by the vibration device 200 at high frequency can be reduced, the vibration device 200 is better frequency-avoided, and the vibration excitation and noise of the vibration device 200 are effectively reduced to the frame body 300; at the same time, the first vibration isolation connection device 3 includes a first vibration isolation device 31 and a second vibration isolation device 32. The first vibration isolation device 31 can produce elastic deformation along a first direction, and the second vibration isolation device 32 can produce elastic deformation along a second direction. On the one hand, it can increase the connection stability between the bracket body 1 and the vibration device 200, and on the other hand, it can weaken the vibration excitation of the vibration device 200 in multiple directions, so that the vibration reduction connection bracket 100 can better avoid the high frequency band of the vibration device 200, thereby reducing the transmission of vibration and noise.

[0062] In an optional embodiment of the present invention, please refer to Figure 1-4 The support body 1 includes a bottom surface 11 facing the frame body 300 when assembled; the first vibration isolation device 31 and the second vibration isolation connection device 4 are both arranged along a first direction perpendicular to the bottom surface 11;

[0063] Furthermore, the first vibration isolation device 31 installed on the bracket body 1 has an end thereof facing the bottom surface 11 at a distance greater than a preset distance from the bottom surface 11 .

[0064] It should be noted that when the vibration device 200 is at the maximum vibration amount, the elastic deformation amount of the first vibration isolation device 31 along the first direction toward the bottom surface 11 can reach the maximum deformation amount. Therefore, it is necessary to ensure that the preset distance is greater than or equal to the maximum elastic deformation amount of the first vibration isolation device 31 along the first direction toward the bottom surface 11. The vibration device 200 is installed above the bracket body 1, and the bottom surface 11 of the bracket body 1 is arranged toward the frame body 300. The first vibration isolation device 31 and the second vibration isolation connecting device 4 are both arranged along the first direction perpendicular to the bottom surface 11. At the same time, after the first vibration isolation device 31 is installed on the bracket body 1, the bracket body 1 is designed to enable the distance of the first vibration isolation device 31 toward the bottom surface 11 to be greater than a preset distance, so that when the first vibration isolation device 31 is subjected to the vibration excitation of the vibration device 200 and deforms along the first direction, it will not hit the bracket body 300, thereby avoiding the problem of additional vibration and noise when the first vibration isolation device 31 hits the bracket body 300 due to excessive vibration excitation of the vibration device 200.

[0065] In an optional embodiment of the present invention, please refer to Figure 1-4 The first direction is a vertical direction and is perpendicular to the length direction of the frame 300; the second direction is perpendicular to the first direction and is parallel to the width direction of the frame 300, and the width direction is also the Y-axis direction shown in the figure.

[0066] It should be noted that, generally, under the action of forces of equal magnitude, the deformation of the frame 300 in the vertical direction perpendicular to its own length direction is greater than the deformation in its own width direction, where the vertical direction is also the Z-axis direction; that is, the ability of the frame 300 to resist deformation in the width direction is greater than the deformation ability of the frame 300 in the vertical direction perpendicular to its own length direction. On the one hand, the first vibration isolation device 31 and the second vibration isolation device 32 can decompose the vibration excitation of the vibration device 200 into a second direction and a first direction along the vertical direction. The vibration excitation in the first direction can be damped twice by the first vibration isolation device 31 and the second vibration isolation connection device 4; and in the second direction, since the second direction is perpendicular to the first direction and the length direction of the frame 300, and the second direction is toward the width direction of the frame 300, the vibration excitation of the vibration device 200 along the second direction is transmitted in the radial direction through the second vibration isolation connection device 4. It is toward the width direction of the frame 300, thereby decomposing the vibration excitation of the vibration device 200 toward the width direction of the frame 300, thereby improving the ability of the frame 300 to resist the vibration excitation of the vibration device 200, thereby achieving a better frequency avoidance effect.

[0067] In an optional embodiment of the present invention, please refer to Figure 1-4 A vibration isolation pad 12 is provided on the bottom surface 11 of the bracket body 1 , and the vibration isolation pad 12 is limited to the bottom surface 11 by the second vibration isolation connecting device 4 .

[0068] It should be noted that the vibration isolation pad 12 is made of elastic material, and the vibration isolation pad 12 can be a whole rubber plate or a plurality of rubber plates dispersed at the second vibration isolation connection device 4. The support body 1 is completely separated from the frame 300 by the vibration isolation pad 12, so as to prevent the support body 1 from hitting the frame 300 during vibration, and to prevent the vibration device 200 from directly transmitting vibration and noise to the frame 300 through the support body 1.

[0069] In an optional embodiment of the present invention, please refer to Figure 3 , 11 At least one side surface of the vibration isolation pad 12 is evenly spaced with a plurality of elastic protrusions 121. On the one hand, the elastic protrusions 121 can evenly absorb and disperse vibration energy to reduce the transmission of vibration. On the other hand, since the vibration isolation pad 12 is a plate-like structure, it can maintain its shape and performance while undergoing a large deformation. Furthermore, the elastic protrusions 121 can allow the air between the vibration isolation pad 12 and the frame 300 to circulate quickly to avoid generating large noise between the two.

[0070] In an optional embodiment of the present invention, please refer to Figure 6 , 8 12, the vibration isolation connection device 2 comprises a first vibration isolation connection device 3 and a second vibration isolation connection device 4, the first vibration isolation connection device 3 and the second vibration isolation connection device 4 both comprise a connection element 21, a vibration-damping bushing 22 and a support element 23; a limiting portion 211 is provided at one end of the connection element 21;

[0071] The vibration-damping bushing 22 is sleeved and limitedly located on the connecting element 21, and one of the connecting element 21 and the vibration-damping bushing 22 is used to connect with the vibration device 200 or the frame 300, and the other is used to connect with the bracket body 1;

[0072] The support element 23 is arranged along the axial direction of the connecting element 21, and at least one support element 23 is located between the vibration-damping bushing 22 and the connecting element 21 and is limited by the limiting portion 211. Specifically, the support element 23 is inserted through the vibration-damping bushing 22, and the connecting element 21 is inserted through the support element 23.

[0073] It should be noted that the connecting element 21 can be a fastener such as a bolt or a screw; the vibration-damping bushing 22 is generally made of an elastic material, such as a rubber material, and more specifically, can be a thermoplastic elastomer. The supporting element 23 is arranged in the axial direction of the vibration-damping bushing 22 to prevent the vibration-damping bushing 22 from being excessively deformed and damaged in the axial direction, and at the same time, it is also beneficial to strengthen the fastening connection between the connecting element 21 and the vibration device 200 or the frame 300. Generally, the connecting element 21 is selected to be connected to the vibration device 200 or the frame 300, and the vibration-damping bushing 22 is selected to be connected to the bracket body 1.

[0074] In an optional embodiment of the present invention, please refer to Figure 6 , 8 12, the first vibration isolation device 31, the second vibration isolation device 32 and the second vibration isolation connection device 4 may include a supporting element 23, and the supporting element 23 includes an inner sleeve 231 and an outer sleeve 232;

[0075] The inner sleeve 231 is disposed between the vibration-damping bushing 22 and the connecting element 21;

[0076] The outer sleeve 232 is sleeved on the outer circumferential surface of the vibration-damping bushing 22 , and the outer sleeve 232 is used to be connected to the bracket body 1 .

[0077] It should be noted that the inner sleeve 231 and the outer sleeve 232 are both sleeve-shaped structures, and the material may be, for example, structural steel or aluminum alloy material; there may be a radial rotation limit structure between the outer sleeve 232 and the bracket body 1 to prevent the outer sleeve 232 from rotating after assembly. Through the arrangement of the inner sleeve 231 and the outer sleeve 232, on the one hand, the mechanical strength of the vibration isolation connection device 2 is improved to avoid structural damage or deformation, and the structural stability is improved; on the other hand, the energy absorption and dispersion capacity of the vibration isolation connection device 2 is improved, and the combination of metal and rubber utilizes the damping characteristics of the two materials to optimize the vibration reduction effect, especially in the use of high-frequency vibration such as compressors; at the same time, because the inner sleeve 231 and the outer sleeve 232 are used in combination, under the extreme conditions of preset high or low temperatures, the structure and function of the vibration isolation connection device 2 will not be too seriously affected by the expansion or contraction of the material.

[0078] Furthermore, the vibration-damping bushing 22 is integrally connected to the supporting element 23. For example, the vibration-damping bushing 22 and the supporting element 23 can be vulcanized or injection-molded into one piece, so that the structure of the vibration-isolating connecting device 2 is more stable.

[0079] For further information, see Figure 1-2The number of the first vibration isolation connection device 3 and the second vibration isolation connection device 4 is no less than three, so that the connection between the vibration reduction connection bracket 100 and the vibration device 200, and between the vibration reduction connection bracket 100 and the frame 300 is closer to a surface connection rather than a line connection, thereby improving the stability of the connection.

[0080] For further information, see Figure 1-2 The support body 1 is connected to the frame body 300 through at least four of the second vibration isolation connection devices 4, thereby enhancing the connection stability.

[0081] In the following, for a clearer explanation, the first vibration isolation connection device 3 includes a buffer bushing, which may be the vibration damping bushing 22 in the vibration damping connection device 2; the first vibration isolation connection device 3 includes a first vibration isolation device 31 and a second vibration isolation device 32; the first vibration isolation device 31 includes a first vibration isolation bushing 3A, which may be the buffer bushing in the first vibration isolation connection device 3 or the vibration damping bushing 22 in the vibration damping connection device 2; the second vibration isolation device 32 includes a second vibration isolation bushing 3B, which may be the buffer bushing in the first vibration isolation connection device 3 or the vibration damping bushing 22 in the vibration damping connection device 2; the second vibration isolation connection device 4 includes a vibration isolation bushing 41, which may be the vibration damping bushing 22 in the vibration damping connection device 2.

[0082] In an optional embodiment of the present invention, please refer to Figure 1-5 , the stiffness of the buffer bushing of the first vibration isolation connection device 3 is less than or equal to the stiffness of the vibration isolation bushing 41 of the second vibration isolation connection device 4, so that the vibration device 200 can release the vibration to the bracket body 1 through the buffer bushing of the first vibration isolation connection device 3 with lower stiffness, so as to absorb most of the high-frequency vibration and part of the low-frequency vibration, and realize the first-level vibration reduction under the action of the buffer bushing of the first vibration isolation connection device 3, and the remaining vibration is transmitted to the second vibration isolation connection device 4 for further attenuation. The stiffness of the vibration isolation bushing 41 of the second vibration isolation connection device 4 is greater than or equal to the stiffness of the buffer bushing of the first vibration isolation connection device 3, which is beneficial to ensure the stability of the bracket body 1 and the vibration device 200 on the one hand, and realizes step-by-step vibration reduction on the other hand, which not only reduces vibration and noise, but also helps to adjust the overall natural frequency, away from the excitation frequency, and avoid or reduce the risk of resonance.

[0083] In an optional embodiment of the present invention, please refer to Figure 2 , 6 The first direction is a vertical direction, and a guide portion 212 is provided at one end of the first vibration isolation device 31 facing the installation direction of the vibration device 200.

[0084] It should be noted that, specifically, the guide portion 212 is arranged on the connecting element 21 of the first vibration isolation device 31, and the guide portion 212 is arranged toward the installation direction of the vibration device 200. Since the vibration device 200, such as a compressor, is generally heavy, when the vibration device 200 is lifted and installed on the vibration damping connecting bracket 100, the existence of the guide portion 212 is conducive to the rapid assembly of the vibration device 200 and improves the assembly efficiency.

[0085] In an optional embodiment of the present invention, please refer to Figure 6 , 8 11, the first vibration isolation connection device 3 includes at least one limit plate 301, and the limit plate 301 is sleeved on the corresponding connection element 21;

[0086] Furthermore, the limiting plate 301 is assembled to limit at least one end of the vibration-damping bushing 22 close to the limiting portion 211 within a predetermined range of movement along the axial direction of the connecting element 21, thereby avoiding adverse effects caused by excessive deformation of the first vibration isolation connecting device 3 during operation and improving the stability of the first vibration isolation connecting device 3 during use.

[0087] In an optional embodiment of the present invention, please refer to Figure 6-7 Or 8-10, the buffer bushing of the first vibration isolation connection device 3 includes a vibration-damping inner cylinder, a vibration-damping outer cylinder and an annular overhanging wall;

[0088] The vibration-damping inner cylinder is sleeved on the outer circumferential surface of the inner sleeve 231; the vibration-damping outer cylinder is arranged in the outer sleeve 232 and is limited by the limiting plate 301; the annular overhanging wall connects the vibration-damping inner cylinder and the vibration-damping outer cylinder; an annular groove is arranged on the outer circumferential surface of the vibration-damping outer cylinder, and the annular groove is used to limit the outer sleeve 232 from moving in the axial direction relative to the vibration-damping outer cylinder.

[0089] It should be noted that the vibration-damping inner cylinder is mainly indirectly connected to the vibration device 200 or the frame 300, and the vibration-damping outer cylinder is mainly directly or indirectly connected to the bracket body 1; by separately setting the vibration-damping inner cylinder and the vibration-damping outer cylinder, the direct contact between the vibration-damping inner cylinder and the vibration-damping outer cylinder is reduced, so that the stiffness and damping characteristics of the vibration-damping system can be more accurately controlled, and high-frequency and low-frequency excitations can be greatly isolated, thereby maximizing the vibration reduction and noise reduction effects.

[0090] In order to distinguish the first vibration isolation device 31 from the second vibration isolation device 32, the above-mentioned vibration damping inner cylinder is marked as the first vibration damping inner cylinder 311A ​​in the first vibration isolation device 31, and is marked as the second vibration damping inner cylinder 321B in the second vibration isolation device 32; the above-mentioned vibration damping outer cylinder is marked as the first vibration damping outer cylinder 312A in the first vibration isolation device 31, and is marked as the second vibration damping outer cylinder 322B in the second vibration isolation device 32; the above-mentioned annular cantilever wall is marked as the first annular cantilever wall 313A in the first vibration isolation device 31, and is marked as the second annular cantilever wall 323B in the second vibration isolation device 32.

[0091] In an optional embodiment of the present invention, please refer to Figure 6-7 Or 8-10, at least one end of the vibration-damping outer cylinder is evenly provided with concave-convex parts, and the concave-convex parts are extended in the radial direction of the vibration-damping outer cylinder. On the one hand, the concave-convex parts facilitate the exhaust between the vibration-damping inner cylinder and the vibration-damping outer cylinder of the buffer bushing, reducing noise generation. On the other hand, the concave-convex parts are also conducive to vibration reduction when the vibration-damping outer cylinder hits the limit plate 301, thereby improving the axial vibration reduction effect. In order to distinguish the first vibration isolation device 31 from the second vibration isolation device 32, the above-mentioned concave-convex parts are marked as the first concave-convex part 312A1 in the first vibration isolation device 31, and marked as the second concave-convex part 322B1 in the second vibration isolation device 32.

[0092] In an optional embodiment of the utility model, the second vibration isolation device 32 is an eccentric structure, and the second vibration isolation device 32 of the eccentric structure is assembled to be eccentrically arranged in the opposite direction of the gravity direction of the vibration device 200, so as to offset the negative impact of the gravity of the vibration device 200 on the vibration reduction process as much as possible, so as to improve the vibration reduction effect. For example, the second vibration isolation bushing 3B of the second vibration isolation device 32 is arranged along the second direction, the second direction is the horizontal direction, and is perpendicular to the vertical direction. Therefore, at this time, the gravity direction of the vibration device 200 is the radial direction of the second vibration isolation bushing 3B, that is, the second vibration isolation bushing 3B of the second vibration isolation device 32 is eccentrically arranged upward in the radial direction.

[0093] As an optional embodiment of the present case, the first vibration isolation bushing 3A of the first vibration isolation device 31 is arranged along a first direction, and the first direction is a vertical direction, which is also the length direction of the first vibration isolation bushing 3A. The first vibration damping outer cylinder 312A of the first vibration isolation device 31 is arranged downward relative to the length direction of the first vibration isolation bushing 3A. Therefore, under the weight of the vibration device 200, the first vibration damping bushing 3A of the first vibration isolation device 31 is deformed, so that the first vibration damping outer cylinder 312A is close to or exactly in the middle position of the first vibration damping inner cylinder 311A ​​in the axial direction, thereby making the upper and lower vibration amplitudes of the first vibration isolation connection device 3 in the axial direction equivalent, and the vibration damping effects in the upper and lower directions are close or equal.

[0094] In an optional embodiment of the present invention, please refer to Figure 6 or 8, the first vibration isolation device 31 and / or the second vibration isolation device 32 comprises at least one vibration-damping pad 302;

[0095] The vibration-damping pad 302 is sleeved on the corresponding connecting element 21 , and is located at the end of the buffer bushing and is limited by the corresponding limiting plate 301 .

[0096] It should be noted that the vibration-damping pad 302 is generally made of elastic material, such as rubber material, and the vibration-damping pad 302 can be set to a circular ring shape; through the setting of the vibration-damping pad 302, the bracket body 1 connected to the buffer bushing can be avoided from colliding with the limit plate 301 to generate vibration and noise, thereby improving the vibration reduction effect.

[0097] See also Figure 1-2 The utility model also provides a compressor, including a compressor body and the vibration-damping connecting bracket 100, wherein the first vibration-isolating connecting device 3 of the vibration-damping connecting bracket 100 is connected to the vibration device 200, and the vibration device 200 is the compressor body; the frame 300 is a power bracket beam, so that the compressor is also within the protection scope of this case.

[0098] See also Figure 1-2 The utility model also provides a vehicle, comprising:

[0099] Vibration device 200;

[0100] Frame 300,

[0101] The vibration-damping connecting bracket 100, the first vibration isolation connecting device 3 of the vibration-damping connecting bracket 100 is connected to the vibration device 200, the second vibration isolation connecting device 4 of the vibration-damping connecting bracket 100 is connected to the frame body 300, the vibration device 200 is the compressor body; the frame body 300 is a power bracket crossbeam, so that the vehicle is also within the protection scope of this case.

[0102] Furthermore, a positioning portion is provided on the outer circumferential surface of the second vibration isolation bushing 3B of the second vibration isolation device 32, so as to facilitate the installation of the second vibration isolation bushing 3B with an eccentric structure in a correct position, thereby ensuring that the eccentric direction of the second vibration isolation bushing 3B with an eccentric structure is correct during installation and use and is not easily changed with changes in vibration amplitude and time.

[0103] For further information, see Figure 6 Or 11, radial through grooves are evenly arranged on the circumferential direction of the vibration-damping pad 302, so that the vibration-damping pad 302 can, on the one hand, have the function of exhaust noise reduction when the buffer bushing and the vibration-damping pad 302 are fitted together, and on the other hand, has a better axial vibration reduction effect.

[0104] For further information, see Figure 12-14 The vibration isolation bushing 41 of the second vibration isolation connection device 4 is respectively provided with annular grooves at both ends in the axial direction. The radial outer wall of the vibration isolation bushing 41 is directly or indirectly connected to the bracket body 1, and the radial inner wall of the vibration isolation bushing 41 is directly or indirectly connected to the frame body 300. Through the design of the annular groove, the material thickness at the two ends and the middle of the vibration isolation bushing 41 is different, which can better improve the energy absorption capacity of the vibration isolation bushing 41.

[0105] For further information, see Figure 8 The limiting plate 301 at one end of the connecting element 21 is connected to the inner sleeve 231 in a limiting manner or is formed in one piece, thereby reducing the complexity of assembly and the number of parts and optimizing the overall structure.

[0106] For further information, see Figure 4-5 The bracket body 1 is provided with a plurality of weight-reducing holes 10, and the weight-reducing holes 10 are through holes or blind holes.

[0107] For further information, see Figure 1-2 When multiple second vibration isolation connection devices 4 are located in the enclosed area of ​​multiple first vibration isolation connection devices 3, at least the connection between the second vibration isolation connection device 4 and the bracket body 1 is arranged close to the center of gravity of the vibration device 200, so as to maximize the vibration reduction effect and connection stability within a limited space.

[0108] In this case, when the vibration device 200 is a compressor, the following vibration isolation requirements are met:

[0109] First, vibration isolation requirements: As the compressor speed increases, the conventional first-level vibration isolation bracket cannot effectively isolate the high-frequency excitation of the compressor. At the same time, the bracket body 1 modal requirements are relatively high. The design should avoid resonance with the excitation frequency of the compressor as much as possible. At the same time, the dynamic stiffness of the rubber bushing of the compressor bracket should be low to ensure that the low-frequency rigid body mode does not couple with other system modes;

[0110] Second, the dynamic stiffness problem caused by layout restrictions: In order to give priority to the requirements of safety collision and other properties, the layout boundary of the compressor and the design space of the bracket body 1 are severely limited, and the layout position is often not ideal, which is very unfavorable for the optimization and improvement of the dynamic stiffness of the bracket body 1. However, the properties require that the dynamic stiffness of the bracket body 1 made of metal material at the passive end should be high to better isolate the vibration noise caused by the compressor excitation;

[0111] Third, layout space: The compressor bracket must solve the problem of high-frequency vibration isolation and dynamic stiffness of the compressor bracket within a limited design boundary;

[0112] Fourth, assembly process feasibility, lightweight / cost: The assembly process of the compressor and the compressor bracket needs to be considered at the same time, requiring the assembly to be as simple and easy to operate as possible. While meeting the above performance requirements, the compressor bracket also needs to be as light as possible to reduce costs.

[0113] In response to the above problems, first, in this case, when the vibration-damping connecting bracket 100 is used in the compressor, a two-part vibration isolation structure is adopted. The active side of the compressor and the vibration-damping connecting bracket 100 adopt a vibration-damping bushing 22 made of a layer of rubber material. The vibration-damping bushing 22 has low stiffness and attenuates the vibration directly transmitted from the compressor to ensure that the system frequency of the first six degrees of freedom is not coupled with other systems. At the same time, the bracket body 1 made of metal material on the passive side and the power bracket crossbeam installation point side adopt another vibration isolation bushing 41 made of rubber material, which can not only ensure the mode of the bracket body 1, but also reduce the excitation transmitted at high frequency of the compressor and avoid the high speed range of the compressor.

[0114] Second, in the conventional first-stage vibration isolation scheme, due to the limitation of the compressor interface, the bracket body 1 of the metal material on the passive side of the compressor is designed with a long cantilever and is arranged in the middle of the power bracket beam. The compressor excitation is transmitted to the passive side bracket body 1 after the first-stage vibration isolation. Due to the long cantilever and the arrangement position, the dynamic stiffness of the bracket body 1 is difficult to meet the property requirements, and the optimization and improvement space is limited. In this case, after adding a first-stage vibration isolation at the installation point of the passive side bracket body 1 and the power bracket beam, the attachment point of the excitation transmission is changed, and the vibration reduction connecting bracket 100 plays the role of a vibration absorber, which changes the direction of the dynamic stiffness.

[0115] Third, in this case, based on the first-level vibration isolation solution before improvement, it is only necessary to add another layer of vibration isolation bushing 41 on the side of the bracket body 1 and the power bracket crossbeam, without occupying additional design space.

[0116] Fourthly, the vibration-damping connecting bracket of the present case has a simple structure and a high feasibility of the assembly process. The compressor and the vibration-damping connecting bracket 100 are easy to assemble. The vibration-damping connecting bracket 100 has its own positioning belt guide bolt for self-positioning, that is, the guide portion 212 of the present case. No additional special tooling is required. The vibration-damping connecting bracket 100 is compactly designed and small in size. At the same time, the structure is provided with a weight-reducing hole 10 feature, which is also conducive to lightweight structure.

[0117] In this case, the air conditioner compressor is assembled to the vehicle body in the following way: first, assemble the vibration-damping connecting bracket 100 to the power bracket crossbeam through 4 M8 bolts, and then drop the compressor from top to bottom onto the vibration-damping connecting bracket 100. Then, assemble and position it through the guide bolts of the vibration-damping connecting bracket 100, and tighten the mounting bolts between the compressor and the vibration-damping connecting bracket 100, so as to achieve the installation of the compressor on the vehicle. The vibration-damping connecting bracket 100 in this case is a secondary vibration isolation bracket, which has a good frequency-avoiding effect on the high-frequency band of the compressor; it is beneficial to the dynamic stiffness of the passive side bracket body 1 and improves the vibration isolation performance; the vibration-damping connecting bracket 100 is light in weight, small in size, and has a relatively good cost, and the assembly process is simple and easy to operate.

[0118] In summary, the utility model effectively overcomes some practical problems in the prior art and thus has high utilization value and use significance.

[0119] 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 technology 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 in the present invention shall still be covered by the claims of the present invention.

Claims

1. A vibration-damping connecting bracket, characterized in that: Used to connect the vibration device and the frame; the vibration reduction connecting bracket includes: The bracket body; A vibration isolation connection device is installed on the support body, and the vibration isolation connection device includes a first vibration isolation connection device and a second vibration isolation connection device; The first vibration isolation connection device is used to connect the vibration device, and the first vibration isolation connection device includes a first vibration isolation device and a second vibration isolation device, the first vibration isolation device is configured to be able to generate elastic deformation along a first direction, and the second vibration isolation device is configured to be able to generate elastic deformation along a second direction, and the first direction and the second direction are arranged at an angle; The second vibration isolation connection device is used to connect the frame.

2. The vibration-damping connecting bracket according to claim 1, characterized in that: The support body comprises a bottom surface facing the support body when assembled; the first vibration isolation device and the second vibration isolation connection device are both arranged along a first direction perpendicular to the bottom surface; Furthermore, the distance between the end of the first vibration isolation device mounted on the bracket body facing the bottom surface and the bottom surface is greater than a preset distance.

3. The vibration-damping connecting bracket according to claim 2, characterized in that: The first direction is a vertical direction and is perpendicular to the length direction of the frame; the second direction is perpendicular to the first direction and is parallel to the width direction of the frame; And / or a vibration isolation pad is provided on the bottom surface of the bracket body, and the vibration isolation pad is limited to the bottom surface by the second vibration isolation connection device; And / or at least one side surface of the vibration isolation pad is evenly spaced with a plurality of elastic protrusions.

4. The vibration-damping connecting bracket according to claim 1, characterized in that: The first vibration isolation connection device and the second vibration isolation connection device both include: A connecting element, one end of which is provided with a limiting portion; A vibration-damping bushing is sleeved and limitedly located on the connecting element, and one of the connecting element and the vibration-damping bushing is used to connect with the vibration device or the frame, and the other is used to connect with the support body; The supporting element is arranged along the axial direction of the connecting element, and at least one of the supporting elements is located between the vibration-damping bushing and the connecting element and is limited by the limiting portion.

5. The vibration-damping connecting bracket according to claim 4, characterized in that: The stiffness of the vibration-damping bushing of the first vibration-damping connection device is less than or equal to the stiffness of the vibration-damping bushing of the second vibration-damping connection device.

6. The vibration-damping connecting bracket according to claim 4, characterized in that: The support element comprises an inner sleeve and an outer sleeve; The inner sleeve is arranged between the vibration-damping bushing and the connecting element; The outer sleeve is sleeved on the outer circumferential surface of the vibration-damping bushing, and the outer sleeve is used to be connected with the bracket body.

7. The vibration-damping connecting bracket according to claim 6, characterized in that: The first vibration isolation connection device comprises at least one limit plate, and the limit plate is sleeved on the corresponding connection element; Furthermore, the limiting plate is assembled to limit at least one end of the vibration-damping bushing close to the limiting portion within a predetermined range of movement along the axial direction of the connecting element.

8. The vibration-damping connecting bracket according to claim 7, characterized in that: The vibration-damping bushing of the first vibration-isolating connection device comprises: A vibration-damping inner cylinder, sleeved on the outer circumferential surface of the inner sleeve; A vibration-damping outer cylinder is disposed in the outer sleeve and is limited by the limiting plate; An annular overhanging wall connects the vibration-damping inner cylinder and the vibration-damping outer cylinder; And / or, at least one end of the vibration-damping outer cylinder is evenly provided with concave-convex parts, and the concave-convex parts are extended along the radial direction of the vibration-damping outer cylinder.

9. The vibration-damping connecting bracket according to claim 7, characterized in that: The first vibration isolation device and / or the second vibration isolation device comprises at least one vibration-damping pad; The vibration-damping pad is sleeved on the corresponding connecting element, located at the end of the vibration-damping bushing and limited by the corresponding limiting plate.

10. A vehicle, characterized in that: It comprises the vibration-damping connecting bracket as described in any one of claims 1 to 9.

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