Damping foot pad, compressor and refrigeration and heating equipment

Abstract

The application provides a damping foot pad, a compressor and a refrigeration and heating device. The damping foot pad comprises a shell with an inner cavity, a shaft core, a sheet spring, an eddy current damping mechanism for damping axial vibration of the shaft core, and a magnetic damping mechanism; the magnetic damping mechanism comprises an inner magnetic ring and an outer magnetic ring for generating magnetic repulsion to the inner magnetic ring in the direction of the shaft core. The damping foot pad of the application damps the axial vibration of the shaft core by setting the eddy current damping mechanism, sets the inner magnetic ring on the shaft core, and sets the outer magnetic ring coaxially around the inner magnetic ring. Since the eddy current damping mechanism and the magnetic damping mechanism have very small stiffness close to zero at the start of vibration, quasi-zero stiffness damping is formed, the axial and radial vibration isolation frequency ranges of the damping foot pad are wide, good axial and radial vibration isolation can be achieved, and the vibration isolation effect is good.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of compressors, and more particularly relates to a damping foot pad, a compressor and a refrigeration and heating device. BACKGROUND

[0002] In the related art, a motor and a compression mechanism are installed in a casing of a compressor, the motor drives the compression mechanism to operate to compress gas. A bottom foot is arranged at the bottom of the casing to be connected to a mounting seat of a household appliance, so as to support the compressor on the mounting seat. When the compressor operates, the operation of the motor and the compression mechanism will generate vibrations, which will be conducted to the mounting seat through the casing and the bottom plate, resulting in relatively large noise and vibration, and even the risk of resonance.

[0003] In order to attenuate the vibration energy generated by the compressor, the existing damping structure of the compressor mainly consists of a rubber foot pad, a sleeve and a bolt. The installation mode is that the bottom foot of the compressor is embedded into the corresponding groove of the rubber foot pad, and the bolt of the compressor passes through the sleeve to fix the rubber foot pad on the mounting seat. The gap fit exists between the bolt and the sleeve, and between the sleeve and the foot pad, so as to realize the circumferential weak constraint. The bolt is in contact with the top of the rubber foot pad, and the bottom foot of the compressor is embedded in the corresponding groove of the rubber foot pad, so as to realize the axial weak constraint. Thus, the vibration energy attenuation in the circumferential and axial directions is realized.

[0004] However, the above damping structure can only attenuate the vibration in the axial direction due to the influence of the material and structure, and the effective vibration isolation frequency point is relatively high, and the vibration isolation effect is insufficient. SUMMARY

[0005] The purpose of the embodiments of the application is to provide a damping foot pad, a compressor and a refrigeration and heating device to solve the problem that the damping structure of the compressor in the prior art is influenced by the material and structure, can only attenuate the vibration in the axial direction, and the effective vibration isolation frequency point is relatively high, and the vibration isolation effect is insufficient.

[0006] To achieve the above purpose, the technical scheme adopted by the embodiments of the application is to provide a damping foot pad, which comprises an outer shell with an inner cavity with one end being open, a shaft core with one end extending into the inner cavity through the opening, a leaf spring supporting the shaft core, an eddy current damping mechanism for attenuating the axial vibration of the shaft core, and a magnetic damping mechanism for positioning the radial position of the shaft core and attenuating the radial vibration of the shaft core. The magnetic damping mechanism comprises an inner magnetic ring mounted on the shaft core, and an outer magnetic ring for generating magnetic repulsion force on the inner magnetic ring in the direction of the shaft core. The outer magnetic ring is arranged around the inner magnetic ring, the inner magnetic ring and the outer magnetic ring are coaxially arranged, the outer magnetic ring is fixed on the outer shell, and the leaf spring is mounted on the outer shell.

[0007] In an alternative embodiment, the inner magnetic ring and the outer magnetic ring are both radially magnetized, and the magnetization directions of the inner magnetic ring and the outer magnetic ring are opposite.

[0008] In an alternative embodiment, when the shaft core axially vibrates, the radial projection of one of the inner magnetic ring and the outer magnetic ring on the shaft core always covers the radial projection of the other on the shaft core.

[0009] In an alternative embodiment, the eddy current damping mechanism comprises a first eddy current damping assembly, the first eddy current damping assembly comprises an inner ring body and an outer ring body, the outer ring body is arranged around the inner ring body, the inner ring body is mounted on the shaft core, and the outer ring body is mounted in the inner cavity; one of the outer ring body and the inner ring body is an electrically conductive and non-magnetic conductive ring member, and the other is a permanent magnetic ring member.

[0010] In an alternative embodiment, the outer ring body is provided with the outer magnetic ring at opposite ends in the axial direction, and the inner ring body is provided with the inner magnetic ring at opposite ends in the axial direction corresponding to the positions of the outer magnetic rings.

[0011] In an alternative embodiment, the outer ring body is an electrically conductive and non-magnetic conductive ring member, the inner ring body is a permanent magnetic ring member, and the magnetic poles on the outer circumferential side of the opposite ends of the inner ring body are the same as the magnetic poles on the inner circumferential side of the end of the outer magnetic ring adjacent to the inner ring body.

[0012] In an alternative embodiment, the inner ring body is an electrically conductive and non-magnetic conductive ring member, the outer ring body is a permanent magnetic ring member, and the magnetic poles on the outer circumferential side of the opposite ends of the outer ring body are the same as the magnetic poles on the inner circumferential side of the end of the inner magnetic ring adjacent to the inner ring body.

[0013] In an alternative embodiment, the permanent magnetic ring member is radially magnetized.

[0014] In an alternative embodiment, the eddy current damping mechanism comprises a second eddy current damping assembly, the second eddy current damping assembly comprises an electrically conductive disc having electrically conductive and non-magnetic conductive characteristics and a permanent magnetic disc having permanent magnetic characteristics, the electrically conductive disc and the permanent magnetic disc are arranged opposite to each other, one of the electrically conductive disc and the permanent magnetic disc is mounted on one end of the shaft core, and the other is mounted on the bottom of the inner cavity.

[0015] In an alternative embodiment, the permanent magnetic disc is axially magnetized.

[0016] In an alternative embodiment, the leaf spring comprises a first spring and a second spring for cooperating to define the moving stroke of the shaft core, and the inner magnetic ring and the outer magnetic ring are both located between the first spring and the second spring.

[0017] In an optional embodiment, the shell comprises a support, a ring cover mounted at one end of the support, and an end cover mounted at the other end of the support, the support is provided with an opening, the outer magnetic ring is arranged in the opening, the end cover is provided with a groove for the shaft core to extend into, the leaf spring is mounted between the end cover and the support, and the leaf spring is mounted at one end of the ring cover away from the end cover.

[0018] In an optional embodiment, the support is provided with a first deformation groove at one end away from the ring cover for the deformation movement of the leaf spring, and / or the ring cover is provided with a second deformation groove at one end away from the support for the deformation movement of the leaf spring.

[0019] Another purpose of the embodiments of the present application is to provide a compressor comprising the damping foot pad according to any one of the above embodiments.

[0020] Still another purpose of the embodiments of the present application is to provide a refrigeration and heating device comprising the compressor according to any one of the above embodiments.

[0021] The damping foot pad provided by the embodiments of the present application has the following beneficial effects: compared with the prior art, the damping foot pad provided by the embodiments of the present application is provided with an eddy current damping mechanism, the stiffness of the eddy current damping mechanism is very small and close to zero at the start of vibration, quasi-zero stiffness damping is formed, thus, the eddy current damping mechanism is used to perform axial damping on the shaft core, the axial effective isolation frequency point of the damping foot pad is greatly reduced, the width of the axial isolation frequency range is greatly increased, and the axial isolation effect is greatly improved; at the same time, the inner magnetic ring is arranged on the shaft core, and the outer magnetic ring is coaxially arranged around the inner magnetic ring, thus, the stiffness is very small and close to zero at the start of radial vibration, quasi-zero stiffness damping is formed, and the outer magnetic ring generates a radial magnetic repulsion force on the inner magnetic ring, so that the inner magnetic ring and the shaft core are always in an ideal equilibrium position with dynamic stiffness close to zero in the radial direction, so that the radial isolation frequency range of the damping foot pad is wide, and the radial isolation effect is good; in addition, the leaf spring is used to support the shaft core, which can facilitate the radial and axial movement of the shaft core, and the leaf spring can also provide certain radial and axial resilience to cooperate with the magnetic damping mechanism and the eddy current damping mechanism for damping, thereby improving the radial and axial damping effect of the damping foot pad.

[0022] The compressor provided by the embodiments of the present application has the following beneficial effects: compared with the prior art, the compressor provided by the embodiments of the present application uses the damping foot pad provided by the above embodiments, has the technical effects of the damping foot pad, and has good radial and axial damping effects.

[0023] The refrigeration and heating equipment provided by the embodiments of the present application has the beneficial effects that, compared with the prior art, the refrigeration and heating equipment of the embodiments of the present application uses the compressor of the above embodiments, and has the technical effects of the compressor, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0025] Figure 1 A sectional view structural schematic diagram of the damping foot pad provided for the first embodiment of the present application;

[0026] Figure 2 A three-dimensional structural schematic diagram of the damping foot pad provided for the first embodiment of the present application;

[0027] Figure 3 A structural schematic diagram of the magnetizing direction of the inner magnetic ring and the outer magnetic ring provided for the first embodiment of the present application;

[0028] Figure 4 A sectional view structural schematic diagram of the damping foot pad provided for the second embodiment of the present application;

[0029] Figure 5 A structural schematic diagram of the magnetizing direction of the permanent magnetic disc provided for the second embodiment of the present application;

[0030] Figure 6 A top view structural schematic diagram of the inner magnetic ring and the outer magnetic ring provided for the third embodiment of the present application;

[0031] Figure 7 A sectional view structural schematic diagram of the damping foot pad provided for the fourth embodiment of the present application.

[0032] In the drawings, the main marks are as follows:

[0033] 100 - damping foot pad;

[0034] 10 - shaft core; 11 - boss; 12 - connecting head; 13 - positioning convex ring;

[0035] 20 - shell; 201 - inner cavity; 21 - support; 211 - opening; 212 - support ring; 213 -; 22 - ring cover; 221 - hollow part; 222 -; 23 - end cover; 231 - groove; 232 - connecting shaft;

[0036] 30 - magnetic damping mechanism; 31 - outer magnetic ring; 311 - first annular magnet; 312 - first magnet; 32 - inner magnetic ring; 321 - second annular magnet; 322 - second magnet;

[0037] 40 - eddy current damping mechanism; 41 - first eddy current damping assembly; 411 - outer ring body; 412 - inner ring body; 42 - second eddy current damping assembly; 421 - conductive disc; 422 - permanent magnetic disc;

[0038] 50 - leaf spring; 51 - first spring; 52 - second spring;

[0039] 61 - first shaft sleeve; 62 - second shaft sleeve; 63 - separation sleeve; 64 - first separation sleeve; 65 - second separation sleeve. DETAILED DESCRIPTION

[0040] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0041] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0042] In the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise explicitly and specifically limited. The meaning of "several" is one or more than one, unless otherwise explicitly and specifically limited. The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. The orientations or positional relationships indicated by the terms "center", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] The reference "one embodiment", "some embodiments" or "embodiments" described in the specification of the present application means that the specific features, structures or characteristics described in connection with the embodiment are included in one or more embodiments of the present application. Therefore, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in other some embodiments" and the like appearing in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. In addition, in one or more embodiments, specific features, structures or characteristics can be combined in any suitable manner.

[0045] Please refer to Figures 1 to 3 , now the damping foot pad 100 provided by the present application will be described. The damping foot pad 100 comprises a shell 20, a shaft core 10, a sheet spring 50, an eddy current damping mechanism 40 and a magnetic damping mechanism 30. The shell 20 is provided with an inner cavity 201, and one end of the inner cavity 201 is in an open state, and one end of the shaft core 10 extends into the inner cavity 201. The eddy current damping mechanism 40 is arranged in the inner cavity 201.

[0046] The sheet spring 50 is mounted on the shell 20, and the shaft core 10 is supported on the sheet spring 50. The shaft core 10 is supported by the sheet spring 50, which facilitates the axial movement of the shaft core 10 in the inner cavity 201, and also facilitates the radial movement of the shaft core 10 in the inner cavity 201. In addition, the sheet spring 50 can provide axial and radial resilience, and can play a certain axial and radial damping role.

[0047] The eddy current damping mechanism 40 is arranged in the inner cavity 201, and is used to reduce the axial vibration of the shaft core 10. Since the eddy current damping mechanism 40 is used to reduce the axial vibration of the shaft core 10, the stiffness of the eddy current damping mechanism 40 is very small, close to zero, at the start of operation or vibration, and in combination with the axial resilience of the leaf spring 50, the shaft core 10 is always in an ideal balanced position with a dynamic stiffness close to zero in the axial direction, so that the axial quasi-zero stiffness damping of the damping foot pad 100 is formed, and according to the damping principle, the closer the stiffness is to zero, the wider the effective frequency range of the vibration isolation is, the lower the effective frequency is, and the better the vibration isolation effect is. Therefore, the damping foot pad 100 can have good damping effect on low-frequency and high-frequency axial vibrations, and good axial damping effect of the damping foot pad 100 is ensured.

[0048] The magnetic damping mechanism 30 is used to position the radial position of the shaft core 10 and reduce the radial vibration of the shaft core 10. The magnetic damping mechanism 30 includes an inner magnetic ring 32 and an outer magnetic ring 31, and the inner magnetic ring 32 and the outer magnetic ring 31 are coaxially arranged, so that the circumferential side of the inner magnetic ring 32 is balanced by the radial force of the outer magnetic ring 31. In addition, the outer magnetic ring 31 generates a radial inward magnetic repulsion force on the inner magnetic ring 32, that is, the inner circumferential side of the outer magnetic ring 31 and the outer circumferential side of the inner magnetic ring 32 are in magnetic repulsion, so that the inner magnetic ring 32 is positioned at the center of the outer magnetic ring 31.

[0049] The outer magnetic ring 31 is mounted on the outer shell 20, and the outer magnetic ring 31 is arranged in the inner cavity 201, and the inner magnetic ring 32 is mounted on the shaft core 10, so that when the shaft core 10 vibrates radially, the inner magnetic ring 32 will vibrate radially in the outer magnetic ring 31, and due to the magnetic repulsion between the outer magnetic ring 31 and the inner magnetic ring 32, the inner magnetic ring 32 can drive the shaft core 10 to be radially reset, so as to realize radial damping of the shaft core 10.

[0050] Since the inner magnetic ring 32 and the outer magnetic ring 31 are coaxially arranged, the circumferential side of the inner magnetic ring 32 is balanced by the radial force of the outer magnetic ring 31, so that when the shaft core 10 starts to vibrate radially, the stiffness of the magnetic damping mechanism 30 is very small, close to zero, and the outer magnetic ring 31 generates a radial inward magnetic repulsion force on the inner magnetic ring 32, and in combination with the radial resilience of the leaf spring 50, the inner magnetic ring 32 and the shaft core 10 are always in an ideal balanced position with a dynamic stiffness close to zero in the radial direction, so that the radial quasi-zero stiffness damping of the damping foot pad 100 is formed, and the damping foot pad 100 can have good damping effect on low-frequency and high-frequency radial vibrations, and good radial damping effect of the damping foot pad 100 is ensured.

[0051] Compared with the prior art, the damping foot pad 100 provided by the embodiment of the present application can slow down the axial vibration of the shaft core 10 by setting the eddy current damping mechanism 40. Since the eddy current damping mechanism 40 has very small stiffness at the start of vibration, close to zero, quasi-zero stiffness damping is formed, so that the axial effective isolation frequency point of the damping foot pad 100 is greatly reduced, the width of the axial isolation frequency range is greatly increased, and the axial isolation effect is greatly improved. At the same time, the inner magnetic ring 32 is arranged on the shaft core 10, and the outer magnetic ring 31 is arranged coaxially around the inner magnetic ring 32. At the start of radial vibration, the stiffness is very small, close to zero, quasi-zero stiffness damping is formed, and the radial magnetic repulsion force generated by the outer magnetic ring 31 on the inner magnetic ring 32 can always keep the inner magnetic ring 32 and the shaft core 10 in the ideal balanced position with the dynamic stiffness close to zero in the radial direction, so that the radial isolation frequency range of the damping foot pad 100 is wide, and the radial isolation effect is good. In addition, the sheet spring 50 is used to support the shaft core 10, which can facilitate the radial and axial movement of the shaft core 10, and the sheet spring 50 can also provide certain radial and axial resilience to cooperate with the magnetic damping mechanism 30 and the eddy current damping mechanism 40 for damping, thereby improving the radial and axial damping effect of the damping foot pad 100.

[0052] In one embodiment, the shaft core 10 is coaxially arranged with the outer magnetic ring 31, that is, the sheet spring 50 supports the shaft core 10 at the center of the outer magnetic ring 31, so that the shaft core 10 is coaxial with the outer magnetic ring 31. When the shaft core 10 is coaxial with the inner magnetic ring 32, the inner magnetic ring 32 can be coaxial with the outer magnetic ring 31, so that the inner magnetic ring 32 can be balanced by the circumferential magnetic force of the outer magnetic ring 31. It can be understood that the inner magnetic ring 32 can also be positioned by supporting the shaft core 10 with the sheet spring 50, so that the inner magnetic ring 32 is coaxial with the outer magnetic ring 31, and the central axis of the shaft core 10 and the central axis of the inner magnetic ring 32 can have a certain deviation, so that the inner magnetic ring 32 can also be balanced by the circumferential magnetic force of the outer magnetic ring 31.

[0053] In one embodiment, please refer to Figure 1 、 Figure 2 and Figure 3 The outer magnetic ring 31 is radially magnetized, that is, the outer magnetic ring 31 is radially magnetized from the center axis to the outside, that is, the polarity of the inner side of the outer magnetic ring 31 in the radial direction is opposite to the polarity of the outer side of the outer magnetic ring 31 in the radial direction. The inner magnetic ring 32 is radially magnetized, that is, the inner magnetic ring 32 is radially magnetized from the center axis to the outside, that is, the polarity of the inner side of the inner magnetic ring 32 in the radial direction is opposite to the polarity of the outer side of the inner magnetic ring 32 in the radial direction.

[0054] The inner magnetic ring 32 and the outer magnetic ring 31 are oppositely magnetized, that is, when the inner magnetic ring 32 is magnetized from the center to the outside, the outer magnetic ring 31 is magnetized from the outside to the inside; that is, when the radially inner side or the inner circumferential side of the inner magnetic ring 32 is an S pole, the radially outer side or the outer circumferential side of the inner magnetic ring 32 is an N pole, the radially inner side or the inner circumferential side of the outer magnetic ring 31 is an N pole, and the radially outer side or the outer circumferential side of the outer magnetic ring 31 is an S pole, so that the radially repulsive force between the inner magnetic ring 32 and the outer magnetic ring 31 is generated. When the outer magnetic ring 31 is magnetized from the center to the outside, the inner magnetic ring 32 is magnetized from the outside to the inside; that is, when the radially inner side or the inner circumferential side of the inner magnetic ring 32 is an N pole, the radially outer side or the outer circumferential side of the inner magnetic ring 32 is an S pole, the radially inner side or the inner circumferential side of the outer magnetic ring 31 is an S pole, and the radially outer side or the outer circumferential side of the outer magnetic ring 31 is an N pole, so that the radially repulsive force between the inner magnetic ring 32 and the outer magnetic ring 31 is generated.

[0055] The inner magnetic ring 32 and the outer magnetic ring 31 are oppositely magnetized, that is, when the inner magnetic ring 32 is magnetized from the center to the outside, the outer magnetic ring 31 is magnetized from the outside to the inside; that is, when the radially inner side or the inner circumferential side of the inner magnetic ring 32 is an S pole, the radially outer side or the outer circumferential side of the inner magnetic ring 32 is an N pole, the radially inner side or the inner circumferential side of the outer magnetic ring 31 is an N pole, and the radially outer side or the outer circumferential side of the outer magnetic ring 31 is an S pole, so that the radially repulsive force between the inner magnetic ring 32 and the outer magnetic ring 31 is generated. When the outer magnetic ring 31 is magnetized from the center to the outside, the inner magnetic ring 32 is magnetized from the outside to the inside; that is, when the radially inner side or the inner circumferential side of the inner magnetic ring 32 is an N pole, the radially outer side or the outer circumferential side of the inner magnetic ring 32 is an S pole, the radially inner side or the inner circumferential side of the outer magnetic ring 31 is an S pole, and the radially outer side or the outer circumferential side of the outer magnetic ring 31 is an N pole, so that the radially repulsive force between the inner magnetic ring 32 and the outer magnetic ring 31 is generated.

[0056] In one embodiment, when the axial middle surface of the inner magnetic ring 32 coincides with the axial middle surface of the outer magnetic ring 31, the magnetic force balance of the two ends of the inner magnetic ring 32 is received by the outer magnetic ring 31, and near the balance position, that is, the axial middle surface of the inner magnetic ring 32 coincides with the axial middle surface of the outer magnetic ring 31, or the axial middle surface of the inner magnetic ring 32 is located near the axial middle surface of the outer magnetic ring 31, that is, the axial middle surface of the inner magnetic ring 32 is adjacent to the axial middle surface of the outer magnetic ring 31, the axial stiffness between the inner magnetic ring 32 and the outer magnetic ring 31 can be zero or close to zero, and the electric eddy current damping mechanism 40 has very small stiffness close to zero at the beginning of vibration, and near the balance position, the sheet spring 50 is also close to the free state, so that the axial stiffness of the entire damping foot pad 100 is closer to zero, and the damping effect is improved. The axial middle surface of the inner magnetic ring 32 refers to the plane located in the middle of the axial direction of the inner magnetic ring 32 and perpendicular to the axial direction of the inner magnetic ring 32. The axial middle surface of the outer magnetic ring 31 refers to the plane located in the middle of the axial direction of the outer magnetic ring 31 and perpendicular to the axial direction of the outer magnetic ring 31.

[0057] In one embodiment, the radial projection of one of the inner magnetic ring 32 and the outer magnetic ring 31 on the shaft core 10 always covers the radial projection of the other on the shaft core 10 when the shaft core 10 axially vibrates. For example, when the axial length of the outer magnetic ring 31 is greater than the axial length of the inner magnetic ring 32, the radial projection of the outer magnetic ring 31 on the shaft core 10 always covers the radial projection of the inner magnetic ring 32 on the shaft core 10 when the shaft core 10 axially vibrates. In this case, the inner magnetic ring 32 is always inside the outer magnetic ring 31 when the shaft core 10 axially vibrates. Since the magnetic repulsion force of the outer magnetic ring 31 on the two ends of the inner magnetic ring 32 is very small when the axial position of the inner magnetic ring 32 in the outer magnetic ring 31 changes, the magnetic force damping mechanism 30 has little effect on the axial damping effect, ensuring good axial damping effect of the shaft core 10. Moreover, the magnetic repulsion force between the outer magnetic ring 31 and the inner magnetic ring 32 changes little, ensuring good radial damping effect on the shaft core 10.

[0058] It can be understood that the radial projection of one of the inner magnetic ring 32 and the outer magnetic ring 31 on the shaft core 10 always covers the radial projection of the other on the shaft core 10 when the shaft core 10 axially vibrates. For example, when the axial length of the inner magnetic ring 32 is greater than the axial length of the outer magnetic ring 31, the radial projection of the inner magnetic ring 32 on the shaft core 10 always covers the radial projection of the outer magnetic ring 31 on the shaft core 10 when the shaft core 10 axially vibrates. In this case, the outer magnetic ring 31 is always located in the region corresponding to the outer periphery of the inner magnetic ring 32 when the shaft core 10 axially vibrates. Thus, the magnetic force damping mechanism 30 has little effect on the axial damping effect, ensuring good axial damping effect of the shaft core 10. Moreover, the magnetic repulsion force between the outer magnetic ring 31 and the inner magnetic ring 32 changes little, ensuring good radial damping effect on the shaft core 10.

[0059] In one embodiment, the absolute value of the difference between the axial length of the outer magnetic ring 31 and the axial length of the inner magnetic ring 32 is greater than the axial vibration stroke of the shaft core 10. When the damping foot pad 100 is in a static state to support the object to be isolated, the axial middle surface of the inner magnetic ring 32 coincides with the axial middle surface of the outer magnetic ring 31, or the axial middle surface of the inner magnetic ring 32 is located near the axial middle surface of the outer magnetic ring 31, that is, the axial middle surface of the inner magnetic ring 32 is adjacent to the axial middle surface of the outer magnetic ring 31. Thus, the inner magnetic ring 32 is always inside the outer magnetic ring 31, or the outer magnetic ring 31 is always located in the region corresponding to the outer periphery of the inner magnetic ring 32 when the shaft core 10 and the inner magnetic ring 32 axially vibrate. Since the magnetic repulsion force of the outer magnetic ring 31 on the two ends of the inner magnetic ring 32 is very small when the axial position of the inner magnetic ring 32 in the outer magnetic ring 31 changes, the magnetic force damping mechanism 30 has little effect on the axial damping effect, ensuring good axial damping effect of the shaft core 10. Moreover, the magnetic repulsion force between the outer magnetic ring 31 and the inner magnetic ring 32 changes little, ensuring good radial damping effect on the shaft core 10.

[0060] In one embodiment, the axial length of the outer magnetic ring 31 is greater than the axial length of the inner magnetic ring 32, and the difference between the axial length of the outer magnetic ring 31 and the axial length of the inner magnetic ring 32 is greater than the axial vibration stroke of the shaft core 10. When the damping foot pad 100 is in a static state of supporting the object to be isolated, the axial middle surface of the inner magnetic ring 32 coincides with the axial middle surface of the outer magnetic ring 31, or the axial middle surface of the inner magnetic ring 32 is located near the axial middle surface of the outer magnetic ring 31, that is, the axial middle surface of the inner magnetic ring 32 is adjacent to the axial middle surface of the outer magnetic ring 31, which can make the magnetic damping mechanism 30 have little effect on the axial damping effect, ensure good axial damping effect of the shaft core 10, and ensure that the magnetic repulsion force between the outer magnetic ring 31 and the inner magnetic ring 32 changes little, thereby ensuring good radial damping effect on the shaft core 10.

[0061] It can be understood that the axial length of the inner magnetic ring 32 is greater than the axial length of the outer magnetic ring 31, and the difference between the axial length of the inner magnetic ring 32 and the axial length of the outer magnetic ring 31 is greater than the axial vibration stroke of the shaft core 10. When the damping foot pad 100 is in a static state of supporting the object to be isolated, the axial middle surface of the inner magnetic ring 32 coincides with the axial middle surface of the outer magnetic ring 31, or the axial middle surface of the inner magnetic ring 32 is located near the axial middle surface of the outer magnetic ring 31, that is, the axial middle surface of the inner magnetic ring 32 is adjacent to the axial middle surface of the outer magnetic ring 31, which can make the magnetic damping mechanism 30 have little effect on the axial damping effect, ensure good axial damping effect of the shaft core 10, and ensure that the magnetic repulsion force between the outer magnetic ring 31 and the inner magnetic ring 32 changes little, thereby ensuring good radial damping effect on the shaft core 10.

[0062] The above-mentioned "adjacent" means that the axial middle surface of the inner magnetic ring 32 coincides with the axial middle surface of the outer magnetic ring 31, and the distance between the axial middle surface of the inner magnetic ring 32 and the axial middle surface of the outer magnetic ring 31 is very small, that is, the axial middle surface of the inner magnetic ring 32 coincides with the axial middle surface of the outer magnetic ring 31 is the ideal state, but a certain error or deviation is allowed, such as the distance of the error or deviation is less than 15% of the maximum axial amplitude of the object to be isolated, of course, in some occasions with high precision requirements, the distance of the error or deviation is less than 10% or 5% of the maximum axial amplitude of the object to be isolated.

[0063] In one embodiment, a plurality of magnetic damping mechanisms 30 can be arranged along the axial direction of the shaft core 10, such as two groups, three groups, four groups, etc. The outer magnetic ring 31 of each magnetic damping mechanism 30 is arranged around the corresponding inner magnetic ring 32, so that the shaft core 10 can be radially positioned and damped by the cooperation of the plurality of magnetic damping mechanisms 30, thereby improving the damping effect. It can be understood that the magnetic damping mechanism 30 can also be arranged as one group.

[0064] In one embodiment, the magnetic force of the outer magnetic ring 31 can be adjusted by adjusting the magnetic energy product of the outer magnetic ring 31, so as to adjust the magnetic repulsion force between the outer magnetic ring 31 and the inner magnetic ring 32, and then adjust the radial damping effect of the magnetic force damping mechanism 30.

[0065] In one embodiment, the magnetic force of the inner magnetic ring 32 can also be adjusted by adjusting the magnetic energy product of the inner magnetic ring 32, so as to adjust the magnetic repulsion force between the outer magnetic ring 31 and the inner magnetic ring 32, and then adjust the radial damping effect of the magnetic force damping mechanism 30.

[0066] Of course, the magnetic repulsion force between the outer magnetic ring 31 and the inner magnetic ring 32 can also be adjusted by adjusting the distance between the outer magnetic ring 31 and the inner magnetic ring 32, and then adjusting the radial damping effect of the magnetic force damping mechanism 30.

[0067] In one embodiment, please refer to Figure 1 , Figure 2 and Figure 3 , the eddy current damping mechanism 40 includes a first eddy current damping assembly 41, the first eddy current damping assembly 41 includes an inner ring body 412 and an outer ring body 411, the outer ring body 411 is arranged around the inner ring body 412, the inner ring body 412 is mounted on the shaft core 10, and the outer ring body 411 is mounted in the inner cavity 201. The outer ring body 411 is an electrically conductive and non-magnetic ring member, and the inner ring body 412 is a permanent magnetic ring member, that is, the outer ring body 411 is a ring member made of an electrically conductive and non-magnetic material, and the inner ring body 412 is a ring member made of a permanent magnetic material. When the shaft core 10 moves axially, the inner ring body 412 moves axially relative to the outer ring body 411, the induced magnetic flux between the inner ring body 412 and the outer ring body 411 will change, and an eddy current will be generated in the outer ring body 411. According to Lenz's law, the eddy current will generate a reverse magnetic field to prevent the change of the magnetic flux, that is, the magnetic field generated by the induced eddy current will prevent the inner ring body 412 from vibrating axially, that is, a quasi-zero stiffness damping effect is generated along the axial dimension.

[0068] It can be understood that the inner ring body 412 is an electrically conductive and non-magnetic ring member, and the outer ring body 411 is a permanent magnetic ring member, that is, the inner ring body 412 is a ring member made of an electrically conductive and non-magnetic material, and the outer ring body 411 is a ring member made of a permanent magnetic material. In this way, when the shaft core 10 moves axially, the inner ring body 412 moves axially relative to the outer ring body 411, the induced magnetic flux between the inner ring body 412 and the outer ring body 411 will change, and an eddy current will be generated in the inner ring body 412. According to Lenz's law, the eddy current will generate a reverse magnetic field to prevent the change of the magnetic flux, that is, the magnetic field generated by the induced eddy current will prevent the inner ring body 412 from vibrating axially, that is, a quasi-zero stiffness damping effect is generated along the axial dimension.

[0069] In one embodiment, when the electrically conductive and non-magnetic conducting ring and the permanent magnetic ring move axially relative to each other, the different electrical conductivity of the electrically conductive and non-magnetic conducting ring will cause the induced magnetic flux generated by the electrically conductive and non-magnetic conducting ring to change accordingly, so that the axial damping effect of the first eddy current damping assembly 41 can be adjusted by adjusting the electrical conductivity of the electrically conductive and non-magnetic conducting ring to adapt to different damping needs. When the outer ring body 411 is an electrically conductive and non-magnetic conducting ring and the inner ring body 412 is a permanent magnetic ring, the electrical conductivity of the outer ring body 411 can be adjusted to adjust the axial damping effect of the first eddy current damping assembly 41 to adapt to different damping needs. Conversely, when the inner ring body 412 is an electrically conductive and non-magnetic conducting ring and the outer ring body 411 is a permanent magnetic ring, the electrical conductivity of the inner ring body 412 can be adjusted to adjust the axial damping effect of the first eddy current damping assembly 41 to adapt to different damping needs.

[0070] In one embodiment, when the electrically conductive and non-magnetic conducting ring and the permanent magnetic ring move axially relative to each other, the different magnetic energy product of the permanent magnetic ring will cause the induced magnetic flux generated by the electrically conductive and non-magnetic conducting ring to change accordingly, so that the axial damping effect of the first eddy current damping assembly 41 can be adjusted by adjusting the magnetic energy product of the permanent magnetic ring to adjust the magnetic force of the permanent magnetic ring to adapt to different damping needs. When the outer ring body 411 is an electrically conductive and non-magnetic conducting ring and the inner ring body 412 is a permanent magnetic ring, the magnetic energy product of the inner ring body 412 can be adjusted to adjust the axial damping effect of the first eddy current damping assembly 41 to adapt to different damping needs. Conversely, when the inner ring body 412 is an electrically conductive and non-magnetic conducting ring and the outer ring body 411 is a permanent magnetic ring, the magnetic energy product of the outer ring body 411 can be adjusted to adjust the axial damping effect of the first eddy current damping assembly 41 to adapt to different damping needs.

[0071] In one embodiment, the outer ring body 411 has outer magnetic rings 31 at opposite axial ends thereof, and the inner ring body 412 has inner magnetic rings 32 at opposite axial ends thereof corresponding to the positions of the outer magnetic rings 31. That is, the outer ring body 411 has magnetic force damping mechanisms 30 at opposite axial ends thereof, and the inner magnetic rings 32 of the magnetic force damping mechanisms 30 are located inside the corresponding outer magnetic rings 31, and the inner magnetic rings 32 at opposite axial ends of the outer ring body 411 are located at the corresponding ends of the inner ring body 412, that is, the magnetic force damping mechanisms 30 at opposite axial ends of the outer ring body 411 are also located at opposite axial ends of the inner ring body 412. This structure can balance the radial damping effect of the magnetic force damping mechanisms 30 on the two ends of the inner ring body 412, so as to avoid radial tilting of the shaft core 10 and better perform radial and axial damping on the shaft core 10.

[0072] In one embodiment, when the opposite ends of the outer ring body 411 and the inner ring body 412 are respectively provided with the magnetic damping mechanism 30, if the outer ring body 411 is an electrically conductive and non-magnetic ring member, and the inner ring body 412 is a permanent magnetic ring member, the magnetic poles on the outer circumferential side of the opposite ends of the inner ring body 412 are the same as the magnetic poles on the inner circumferential side of the end of the adjacent outer magnetic ring 31 close to the inner ring body 412, so that the outer magnetic rings 31 at the two ends of the inner ring body 412 generate magnetic repulsion on the opposite ends of the inner ring body 412, to magnetically push the inner ring body 412 and the shaft core 10 to move to the axial balance position, so as to improve the axial damping effect of the damping foot pad 100. In addition, since the outer magnetic rings 31 at the two ends of the inner ring body 412 generate magnetic repulsion on the entire circumferential direction of the opposite ends of the inner ring body 412, the inner ring body 412 and the shaft core 10 can be pushed to move to the radial center position, so as to improve the radial damping effect of the damping foot pad 100.

[0073] It can be understood that when the opposite ends of the outer ring body 411 and the inner ring body 412 are respectively provided with the magnetic damping mechanism 30, if the inner ring body 412 is an electrically conductive and non-magnetic ring member, and the outer ring body 411 is a permanent magnetic ring member, the magnetic poles on the outer circumferential side of the opposite ends of the outer ring body 411 are the same as the magnetic poles on the inner circumferential side of the end of the adjacent inner magnetic ring 32 close to the inner ring body 412, so that the outer ring body 411 at the two ends generates magnetic repulsion on the inner magnetic rings 32 at the two ends of the outer ring body 411, to magnetically push the two inner magnetic rings 32 and the shaft core 10 to move to the axial balance position, so as to improve the axial damping effect of the damping foot pad 100. In addition, since the outer ring body 411 at the two ends generates magnetic repulsion on the entire circumferential direction of the inner magnetic rings 32 at the two ends of the outer ring body 411, the two inner magnetic rings 32 and the shaft core 10 can be pushed to move to the radial center position, so as to improve the radial damping effect of the damping foot pad 100.

[0074] In one embodiment, referring to Figure 1 , a separation sleeve 63 is arranged between the inner ring body 412 and the inner magnetic ring 32, to position the inner ring body 412 and the inner magnetic ring 32, facilitating the assembly of the inner ring body 412 and the inner magnetic ring 32.

[0075] In one embodiment, when the opposite ends of the outer ring body 411 and the inner ring body 412 are respectively provided with the magnetic damping mechanism 30, the separation sleeve 63 is arranged between the two ends of the inner ring body 412 and the adjacent inner magnetic ring 32, to position the inner ring body 412 and the inner magnetic ring 32.

[0076] In one embodiment, the separation sleeve 63 is made of a non-magnetic material, which can be made of a non-magnetic metal material (such as copper) or a non-magnetic non-metal material (such as plastic), to ensure that the separation sleeve 63 has good rigidity and does not affect the magnetic field generated by the inner magnetic ring 32, the outer magnetic ring 31 and the permanent magnetic ring member.

[0077] In one embodiment, the permanent magnetic ring is radially magnetized, that is, the permanent magnetic ring is magnetized from the center to the outside, that is, the polarity of the radially inner side of the permanent magnetic ring is opposite to the polarity of the radially outer side of the permanent magnetic ring. That is, the radially inner side or inner circumferential side of the permanent magnetic ring is S-pole, and the radially outer side or outer circumferential side of the permanent magnetic ring is N-pole; when the radially inner side or inner circumferential side of the permanent magnetic ring is N-pole, and the radially outer side or outer circumferential side of the permanent magnetic ring is S-pole, the magnetic pole of the radially outer side or outer circumferential side of the permanent magnetic ring is single, and the magnetic pole of the radially inner side or inner circumferential side of the permanent magnetic ring is single, so as to better generate a magnetic field for the electrically conductive and non-magnetically conductive ring to be inducted.

[0078] In one embodiment, the permanent magnetic ring can include a plurality of magnetic bodies, and the magnetic bodies are permanent magnets, that is, the magnetic bodies are made of permanent magnetic materials. The plurality of magnetic bodies are arranged in a ring array to form a ring structure. Using the plurality of magnetic bodies, the processing and manufacturing are convenient, especially for radial magnetization.

[0079] In one embodiment, each magnetic body is in the shape of a sector, which is convenient for the plurality of magnetic bodies to combine to form a ring structure. It can be understood that each magnetic body can also be arranged in other shapes, such as a cuboid, to facilitate manufacturing, and the plurality of magnetic bodies are arranged in a ring array.

[0080] In one embodiment, the permanent magnetic ring includes a magnetic ring body, and the magnetic ring body is at least one, and the magnetic ring body is an integrally formed ring. When there are a plurality of magnetic ring bodies, the plurality of magnetic ring bodies are stacked along the axial direction of the shaft core 10 to form the permanent magnetic ring. The permanent magnetic ring uses the integrally formed magnetic ring body, which not only facilitates the installation of the permanent magnetic ring, but also facilitates the adjustment of the number of magnetic ring bodies to adjust the magnetic force of the permanent magnetic ring, and further adjust the axial damping effect of the first eddy current damping assembly 41 to adapt to different damping needs.

[0081] In one embodiment, along the axial direction of the shaft core 10, a group of first eddy current damping assemblies 41 can be arranged to reduce the volume of the damping foot pad 100 and facilitate use. It can be understood that along the axial direction of the shaft core 10, a plurality of groups of first eddy current damping assemblies 41 can also be arranged to improve the axial damping effect of the damping foot pad 100.

[0082] In one embodiment, please refer to Figure 3The outer magnetic ring 31 comprises at least one first annular magnet 311, which is an annular permanent magnet. When the first annular magnet 311 is in plurality, the plurality of first annular magnets 311 are arranged along the axial direction of the shaft core 10, and each first annular magnet 311 is installed in the shell 20 to generate a magnetic force on the inner magnetic ring 32. The use of the first annular magnet 311 in the outer magnetic ring 31 not only facilitates the installation of the outer magnetic ring 31 in the shell 20, but also facilitates the adjustment of the number of first annular magnets 311 to adjust the magnetic force of the outer magnetic ring 31, and further adjust the magnetic force of the outer magnetic ring 31 on the inner magnetic ring 32.

[0083] In one embodiment, referring to Figure 3 The inner magnetic ring 32 comprises at least one second annular magnet 321, which is an annular permanent magnet. When the second annular magnet 321 is in plurality, the plurality of second annular magnets 321 are arranged along the axial direction of the shaft core 10, and each second annular magnet 321 is installed on the shaft core 10 to generate a magnetic force on the outer magnetic ring 31. The use of the second annular magnet 321 in the inner magnetic ring 32 not only facilitates the installation of the inner magnetic ring 32 on the shaft core 10, but also facilitates the adjustment of the number of second annular magnets 321 to adjust the magnetic force of the inner magnetic ring 32, and further adjust the magnetic force of the inner magnetic ring 32 on the outer magnetic ring 31.

[0084] In one embodiment, referring to Figure 3 The outer magnetic ring 31 comprises the first annular magnet 311, and the inner magnetic ring 32 comprises the second annular magnet 321, so that the number of the first annular magnet 311 and the second annular magnet 321 can be adjusted to adjust the magnetic force between the inner magnetic ring 32 and the outer magnetic ring 31, and further adjust the radial damping performance of the damping foot pad 100 to adapt to different weights of the object to be damped and different vibration amplitudes of the object to be damped.

[0085] In one embodiment, referring to Figure 1 and Figure 2 The sheet spring 50 can use a butterfly spring to ensure that the sheet spring 50 can stably and well support the shaft core 10 and move along the axial direction of the shaft core 10. In addition, the use of the cross-shaped spring has a small volume, and the damping foot pad 100 can be made smaller. It can be understood that the sheet spring 50 can also adopt other shapes of spring structures, such as a spiral flat spring.

[0086] In one embodiment, the leaf spring 50 can be made of a non-magnetic conductive material, such as a non-magnetic conductive metal material (e.g., copper, etc.) or a non-magnetic conductive non-metal material (e.g., plastic, etc.), to ensure that the leaf spring 50 has good rigidity and can stably support the shaft core 10 without affecting the interaction of the magnetic fields generated by the inner magnetic ring 32 and the outer magnetic ring 31.

[0087] In one embodiment, referring to Figure 1 and Figure 2 , the housing 20 includes a support 21, a ring cover 22, and an end cover 23. The support 21 is provided with an opening 211, and the end cover 23 is provided with a recess 231. The ring cover 22 and the end cover 23 are respectively installed at two ends of the support 21, and the recess 231 is located at one end of the end cover 23 close to the support 21. The opening 211 and the recess 231 are in communication, so that the hollow portion 221 of the ring cover 22, the opening 211 of the support 21, and the recess 231 of the end cover 23 form an inner cavity 201 of the housing 20, to install the eddy current damping mechanism 40 and the magnetic vibration reduction mechanism 30. Specifically, the outer magnetic ring 31 of the magnetic vibration reduction mechanism 30 can be fixed in the opening 211 of the support 21. When the eddy current damping mechanism 40 includes the first eddy current damping assembly 41, the outer ring body 411 of the first eddy current damping assembly 41 can be installed in the opening 211 of the support 21.

[0088] In one embodiment, the support 21 is provided with a support ring 212, which is protruded inwardly from the inner surface of the opening 211. When the outer magnetic ring 31 is installed, the outer magnetic ring 31 can be positioned and supported by the support ring 212. The ring cover 22 is installed on the support 21, so that the outer magnetic ring 31 is clamped and held by the ring cover 22 and the support ring 212 to be positioned and fixed. The opening 211 and the recess 231 are in communication, and when the shaft core 10 moves in the opening 211, the shaft core 10 can extend into the recess 231 to ensure that the shaft core 10 has sufficient moving stroke.

[0089] In one embodiment, the eddy current damping mechanism 40 includes the first eddy current damping assembly 41, and the two ends of the outer ring body 411 are respectively provided with the outer magnetic ring 31. The two outer magnetic rings 31 and the outer ring body 411 can be clamped and held by the ring cover 22 and the support ring 212 to be positioned and fixed.

[0090] It can be understood that when the magnetic vibration reduction mechanism 30 has only one group, the outer magnetic ring 31 can be clamped and held by the ring cover 22 and the support ring 212.

[0091] In one embodiment, a leaf spring 50 is installed between the end cap 23 and the support 21, and the leaf spring 50 is clamped and fixed by the cooperation of the end cap 23 and the support 21, so as to install and fix the leaf spring 50. The shaft core 10 is supported and positioned by the leaf spring 50. It is understood that the leaf spring 50 can also be directly fixed in the support 21.

[0092] In one embodiment, a leaf spring 50 is installed at the end of the ring cover 22 away from the end cap 23, that is, a leaf spring 50 is installed at the end of the ring cover 22 away from the end cap 23, so as to install the leaf spring 50, and the shaft core 10 is supported and positioned by the leaf spring 50.

[0093] In one embodiment, a leaf spring 50 is installed between the end cap 23 and the support 21, and a leaf spring 50 is installed at the end of the ring cover 22 away from the end cap 23, so that the shaft core 10 is supported and positioned by the cooperation of the two leaf springs 50, so as to more stably fix the shaft core 10 and better play the role of cooperating with the damping, and the two leaf springs 50 are located at both ends of the support 21, and the axial movement stroke of the shaft core 10 can also be limited.

[0094] In one embodiment, the depth of the groove 231 in the end cap 23 is greater than the axial movement stroke of the shaft core 10 along the opening 211, so that the shaft core 10 has sufficient movement stroke, and the shaft core 10 is prevented from contacting the end cap 23 during intense vibration, so as to better isolate the vibration.

[0095] In one embodiment, when the leaf spring 50 is installed between the end cap 23 and the support 21, a first deformation groove is formed at the end of the support 21 away from the ring cover 22, so that when the shaft core 10 moves, the first deformation groove can serve as a deformation space for the leaf spring 50 when the leaf spring 50 moves with the shaft core 10, so as to avoid blocking the leaf spring 50 and affecting the deformation of the leaf spring 50.

[0096] In one embodiment, when the leaf spring 50 is installed at the end of the ring cover 22 away from the end cap 23, a second deformation groove is formed at the end of the ring cover 22 away from the support 21, so that when the shaft core 10 moves, the second deformation groove can serve as a deformation space for the leaf spring 50 when the leaf spring 50 moves with the shaft core 10, so as to avoid blocking the leaf spring 50 and affecting the deformation of the leaf spring 50.

[0097] In one embodiment, the end cap 23 is provided with a connecting shaft 232, the connecting shaft 232 is located at the end of the end cap 23 away from the support 21, and the connecting shaft 232 is coaxially arranged with the shaft core 10. The connecting shaft 232 is provided to facilitate connection with an external mounting seat when the damping foot pad 100 is used. In addition, the coaxial arrangement of the connecting shaft 232 and the shaft core 10 can better play the role of damping.

[0098] In one embodiment, referring to Figure 1 and Figure 2 , the shell 20 is a non-magnetic shell, that is, the shell 20 is made of a non-magnetic material, that is, the shell 20 is made of a non-magnetic metal material, such as an aluminum alloy, etc. The shell 20 can also be made of a non-magnetic and non-metallic material, such as plastic, ceramic, etc. to ensure that the shell 20 has good stiffness performance and high load capacity, and does not affect the interaction of the magnetic field generated by the inner magnetic ring 32 and the outer magnetic ring 31.

[0099] In one embodiment, when the shell 20 includes the ring cover 22, the support 21 and the end cover 23, the ring cover 22, the support 21 and the end cover 23 are all made of a non-magnetic material to ensure that the shell 20 has good stiffness performance and high load capacity, and does not affect the interaction of the magnetic field generated by the inner magnetic ring 32 and the outer magnetic ring 31.

[0100] In one embodiment, the ring cover 22, the support 21 and the end cover 23 can be fixedly connected by screws, which is firm and convenient. Of course, the ring cover 22, the support 21 and the end cover 23 can also be fixedly connected by other means, such as welding.

[0101] In one embodiment, the shaft core 10 is a non-magnetic shaft, that is, the shaft core 10 is made of a non-magnetic material, that is, the shaft core 10 is made of a non-magnetic metal material, such as an aluminum alloy, etc. The shaft core 10 can also be made of a non-magnetic and non-metallic material (such as plastic, ceramic, etc.) to ensure that the shaft core 10 has good stiffness performance and high load capacity, and does not affect the interaction of the magnetic field generated by the inner magnetic ring 32 and the outer magnetic ring 31.

[0102] In one embodiment, referring to Figure 1 and Figure 2 , the sheet spring 50 includes a first spring 51 and a second spring 52, and the first spring 51 and the second spring 52 are respectively connected to the shaft core 10, so as to support the shaft core 10 through the cooperation of the first spring 51 and the second spring 52 to more stably support the shaft core 10. The inner magnetic ring 32 is located between the first spring 51 and the second spring 52, and the outer magnetic ring 31 is located between the first spring 51 and the second spring 52, so as to define the moving stroke of the shaft core 10 through the cooperation of the first spring 51 and the second spring 52.

[0103] In one embodiment, when the sheet spring 50 is installed at the end of the ring cover 22 away from the end cover 23, and the sheet spring 50 is installed between the end cover 23 and the support 21, the two sheet springs 50 can be respectively the first spring 51 and the second spring 52, that is, the sheet spring 50 at the end of the ring cover 22 away from the end cover 23 is the first spring 51, and the sheet spring 50 between the end cover 23 and the support 21 is the second spring 52.

[0104] In one embodiment, the shaft core 10 is provided with a first shaft sleeve 61 and a second shaft sleeve 62. The first shaft sleeve 61 is arranged between the first spring 51 and the adjacent inner magnetic ring 32 to position the first spring 51 relative to the adjacent inner magnetic ring 32. The second shaft sleeve 62 is arranged between the second spring 52 and the adjacent inner magnetic ring 32 to position the second spring 52 relative to the adjacent inner magnetic ring 32. The first shaft sleeve 61 and the second shaft sleeve 62 are used to cooperate to position the inner magnetic rings 32 so as to position and fix the inner magnetic rings 32 on the shaft core 10.

[0105] In one embodiment, the first shaft sleeve 61 is made of a non-magnetic material, such as a non-magnetic metal material (e.g., aluminum alloy, copper, etc.), or a non-magnetic and non-metal material (e.g., plastic, ceramic, etc.). The first shaft sleeve 61 has good rigidity and high load capacity, and does not affect the interaction of the magnetic fields generated by the inner magnetic rings 32 and the outer magnetic ring 31.

[0106] In one embodiment, the second shaft sleeve 62 is made of a non-magnetic material, such as a non-magnetic metal material (e.g., aluminum alloy, copper, etc.), or a non-magnetic and non-metal material (e.g., plastic, ceramic, etc.). The second shaft sleeve 62 has good rigidity and high load capacity, and does not affect the interaction of the magnetic fields generated by the inner magnetic rings 32 and the outer magnetic ring 31.

[0107] In one embodiment, the shaft core 10 is provided with a boss 11. The boss 11 cooperates with the first shaft sleeve 61 to clamp the first spring 51, so as to position and fix the first spring 51.

[0108] In one embodiment, the inner ring body 412 is provided with inner magnetic rings 32 at both ends. The inner magnetic rings 32 are provided with a separation sleeve 63 between the inner ring body 412 and the inner magnetic rings 32. The second shaft sleeve 62 is arranged between the second spring 52 and the adjacent inner magnetic ring 32. In this way, the boss 11 can be used to position the first spring 51, the first shaft sleeve 61, the inner magnetic rings 32, the separation sleeves 63, the inner ring body 412, and the second shaft sleeve 62.

[0109] It can be understood that a locking member, such as a nut, can also be provided on the shaft core 10 to cooperate with the second shaft sleeve 62 to clamp and fix the second spring 52.

[0110] In one embodiment, the boss 11 is integrally formed with the shaft core 10 to facilitate processing and manufacturing. It can be understood that the boss 11 can also be separately manufactured and then fixed on the shaft core 10.

[0111] In one embodiment, the shaft core 10 is provided with a connecting head 12 at one end extending out of the inner cavity 201. The connecting head 12 is arranged on the shaft core 10 to be connected to a supported object to be isolated (e.g., a supported compressor), facilitating the use of the vibration isolation foot pad 100.

[0112] In one embodiment, the connecting head 12 is provided with a positioning protruding ring 13, so as to play a positioning role when connected with the object to be isolated (such as a compressor) supported by the shaft core 10, facilitating the use of the damping foot pad 100.

[0113] In one embodiment, referring to Figure 4 and Figure 5 , the eddy current damping mechanism 40 comprises a second eddy current damping assembly 42, which comprises an electrically conductive disc 421 and a permanent magnetic disc 422 arranged opposite to the electrically conductive disc 421. The electrically conductive disc 421 has electrically conductive and non-magnetic conductive properties, i.e. the electrically conductive disc 421 is made of electrically conductive and non-magnetic conductive material. The permanent magnetic disc 422 has permanent magnetic properties, i.e. the permanent magnetic disc 422 is made of permanent magnetic material. When the electrically conductive disc 421 moves axially relative to the permanent magnetic disc 422, the induced magnetic flux between the electrically conductive disc 421 and the permanent magnetic disc 422 will change, and an eddy current will be generated in the electrically conductive disc 421. According to Lenz's law, the eddy current will generate a reverse magnetic field to prevent the change of the magnetic flux, i.e. the magnetic field generated by the induced eddy current will prevent the relative axial vibration between the electrically conductive disc 421 and the permanent magnetic disc 422, i.e. quasi-zero stiffness damping effect is generated along the axial dimension.

[0114] In one embodiment, the electrically conductive disc 421 is installed on one end of the shaft core 10, and the permanent magnetic disc 422 is installed at the bottom of the inner cavity 201. In this way, when the shaft core 10 moves axially, the electrically conductive disc 421 will move axially relative to the permanent magnetic disc 422, thereby generating an eddy current in the electrically conductive disc 421 to generate a reverse magnetic field, and preventing the axial vibration of the electrically conductive disc 421 and the shaft core 10, i.e. quasi-zero stiffness damping effect is generated along the axial dimension.

[0115] It can be understood that the permanent magnetic disc 422 is installed on one end of the shaft core 10, and the electrically conductive disc 421 is installed at the bottom of the inner cavity 201. In this way, when the shaft core 10 moves axially, the permanent magnetic disc 422 will move axially relative to the electrically conductive disc 421, thereby generating an eddy current in the electrically conductive disc 421 to generate a reverse magnetic field, and preventing the axial vibration of the permanent magnetic disc 422 and the shaft core 10, i.e. quasi-zero stiffness damping effect is generated along the axial dimension.

[0116] In one embodiment, when the electrically conductive disc 421 moves axially relative to the permanent magnetic disc 422, the different electrical conductivity of the electrically conductive disc 421 will cause the induced magnetic flux generated by the electrically conductive disc 421 to change accordingly, so that the axial damping effect of the second eddy current damping assembly 42 can be adjusted by adjusting the electrical conductivity of the electrically conductive disc 421 to adapt to different damping needs.

[0117] In one embodiment, when the electrically conductive disc 421 and the permanent magnetic disc 422 move axially relative to each other, the different magnetic energy products of the permanent magnetic disc 422 will cause the induced magnetic flux generated by the electrically conductive disc 421 to change accordingly, so that the axial damping effect of the second electric eddy current damping assembly 42 can be adjusted by adjusting the magnetic force of the permanent magnetic disc 422 to adapt to different damping needs.

[0118] In one embodiment, the permanent magnetic disc 422 is axially magnetized, that is, the magnetic poles at the two axial ends of the permanent magnetic disc 422 are opposite. For example, when one axial end of the permanent magnetic disc 422 is an S pole, the other axial end is an N pole. When one axial end of the permanent magnetic disc 422 is an N pole, the other axial end is an S pole, so that the magnetic pole of the permanent magnetic disc 422 close to one end of the electrically conductive disc 421 is single, so as to generate induced eddy current in the electrically conductive disc 421 when the electrically conductive disc 421 and the permanent magnetic disc 422 move axially relative to each other.

[0119] In one embodiment, the permanent magnetic disc 422 can be made of a disc piece made of a permanent magnetic material for installation and use. Of course, the permanent magnetic disc 422 can also be made by stacking a plurality of disc pieces made of a permanent magnetic material to improve the magnetic force of the permanent magnetic disc 422.

[0120] In one embodiment, the electrically conductive disc 421 can be made of a plate piece made of an electrically conductive and non-magnetic conductive material for installation and use. Of course, the electrically conductive disc 421 can also be made by stacking a plurality of plate pieces made of an electrically conductive and non-magnetic conductive material.

[0121] In one embodiment, when the magnetic force damping mechanism 30 is provided with multiple groups, a first spacing sleeve 64 can also be arranged between the two adjacent inner magnetic rings 32 to position the positions between the two inner magnetic rings 32. Similarly, a second spacing sleeve 65 can be arranged between the two adjacent outer magnetic rings 31 to position the positions between the two outer magnetic rings 31.

[0122] In one embodiment, the first spacing sleeve 64 is made of a non-magnetic conductive material, such as a non-magnetic conductive metal material (such as aluminum alloy, copper, etc.), or a non-magnetic and non-metallic material (such as plastic, ceramic, etc.), to ensure that the first spacing sleeve 64 has good rigidity performance and high load capacity characteristics, and does not affect the interaction of the magnetic fields generated by the inner magnetic ring 32 and the outer magnetic ring 31.

[0123] In one embodiment, the second spacing sleeve 65 is made of a non-magnetic conductive material, such as a non-magnetic conductive metal material (such as aluminum alloy, copper, etc.), or a non-magnetic and non-metallic material (such as plastic, ceramic, etc.), to ensure that the second spacing sleeve 65 has good rigidity performance and high load capacity characteristics, and does not affect the interaction of the magnetic fields generated by the inner magnetic ring 32 and the outer magnetic ring 31.

[0124] In one embodiment, please refer toFigure 6 The outer magnetic ring 31 comprises a plurality of first magnets 312. The first magnets 312 are permanent magnets, i.e. the first magnets 312 are made of permanent magnetic material. The plurality of first magnets 312 are arranged in a ring array to form a ring structure. The plurality of first magnets 312 are used to facilitate the manufacturing process, especially the radiation magnetization.

[0125] In an embodiment, each first magnet 312 is in the shape of a sector, which facilitates the combination of the plurality of first magnets 312 to form a ring structure. It can be understood that each first magnet 312 can also be arranged in other shapes, such as a cuboid, to facilitate the manufacturing process, while the plurality of first magnets 312 are arranged in a ring array.

[0126] In an embodiment, referring to Figure 6 The inner magnetic ring 32 comprises a plurality of second magnets 322. The second magnets 322 are permanent magnets, i.e. the second magnets 322 are made of permanent magnetic material. The plurality of second magnets 322 are arranged in a ring array to form a ring structure. The plurality of second magnets 322 are used to facilitate the manufacturing process, especially the radiation magnetization.

[0127] In an embodiment, each second magnet 322 is in the shape of a sector, which facilitates the combination of the plurality of second magnets 322 to form a ring structure. It can be understood that each second magnet 322 can also be arranged in other shapes, such as a cuboid, to facilitate the manufacturing process, while the plurality of second magnets 322 are arranged in a ring array.

[0128] In an embodiment, when the outer magnetic ring 31 comprises a plurality of first magnets 312 arranged in a ring array and the inner magnetic ring 32 comprises a plurality of second magnets 322 arranged in a ring array, the number of the first magnets 312 and the second magnets 322 in the circumferential direction can be increased or decreased according to the amplitude of the supported vibration-damping object (such as a supported compressor), so as to adjust the interaction force between the inner magnetic ring 32 and the outer magnetic ring 31, and achieve the radial optimal vibration-damping effect of the vibration-damping foot pad 100.

[0129] In an embodiment, referring to Figure 7 The eddy current damping mechanism 40 comprises a first eddy current damping assembly 41 and a second eddy current damping assembly 42. The first eddy current damping assembly 41 and the second eddy current damping assembly 42 cooperate to perform axial vibration damping on the shaft core 10, so as to improve the vibration-damping effect.

[0130] The vibration-damping foot pad 100 according to the embodiments of the present application can achieve axial quasi-zero stiffness damping and radial quasi-zero stiffness damping, can ensure that the vibration-damping foot pad 100 has good vibration-damping effect on low-frequency and high-frequency vibrations, and can ensure good vibration-damping effect of the vibration-damping foot pad 100.

[0131] The embodiment of the present application further provides a compressor, comprising a body, and the vibration-reducing foot pad 100 according to any one of the above embodiments is installed on the body. The compressor uses the vibration-reducing foot pad 100 of the above embodiment, has the technical effects of the vibration-reducing foot pad 100, and can achieve good vibration isolation effects in the axial direction and the radial direction, and can also achieve good vibration reduction and noise reduction in the case of high-frequency and severe vibration of the compressor.

[0132] The compressor of the embodiment of the present application can be a rotary compressor, a reciprocating piston compressor, a scroll compressor, etc.

[0133] The embodiment of the present application further provides a refrigeration and heating device, comprising the compressor according to any one of the above embodiments. The refrigeration and heating device uses the compressor of the above embodiment, has the technical effects of the compressor, and details are not repeated here.

[0134] The refrigeration and heating device of the embodiment of the present application can be a refrigeration-only device, such as a refrigerator, can be a heating-only device, or can be a device that takes into account both refrigeration and heating.

[0135] The above is only an optional embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vibration damping footmat, characterized in that The shell includes an inner cavity with one end open, a shaft core with one end extending into the inner cavity through the opening, a leaf spring supporting the shaft core, an eddy current damping mechanism for damping axial vibration of the shaft core, and a magnetic damping mechanism for positioning the radial position of the shaft core and damping radial vibration of the shaft core; the magnetic damping mechanism includes an inner magnetic ring mounted on the shaft core, and an outer magnetic ring for generating magnetic repulsion force to the inner magnetic ring in the direction of the shaft core, the outer magnetic ring is arranged around the inner magnetic ring, the inner magnetic ring and the outer magnetic ring are coaxially arranged, the outer magnetic ring is fixed on the shell, and the leaf spring is mounted on the shell; the inner magnetic ring and the outer magnetic ring are both radially magnetized, and the magnetization directions of the inner magnetic ring and the outer magnetic ring are opposite.

2. The vibration damping footmat of claim 1, wherein: When the shaft core is axially vibrated, the radial projection of one of the inner magnetic ring and the outer magnetic ring on the shaft core always covers the radial projection of the other on the shaft core.

3. The vibration damping footmat of claim 1, wherein: The eddy current damping mechanism includes a first eddy current damping assembly, the first eddy current damping assembly includes an inner ring body and an outer ring body, the outer ring body is arranged around the inner ring body, and the inner ring body is mounted on the shaft core; one of the outer ring body and the inner ring body is a conductive and non-magnetic ring member, and the other is a permanent magnetic ring member.

4. The vibration damping footmat of claim 3, wherein The outer ring body is provided with the outer magnetic ring at opposite ends in the axial direction, and the inner ring body is provided with the inner magnetic ring at opposite ends in the axial direction corresponding to the positions of the outer magnetic rings.

5. The vibration damping footmat of claim 4, wherein: The outer ring body is a conductive and non-magnetic ring member, the inner ring body is a permanent magnetic ring member, and the magnetic poles on the outer circumferential side of the opposite ends of the inner ring body are the same as the magnetic poles on the inner circumferential side of one end of the inner ring body adjacent to the outer magnetic ring close to the inner ring body.

6. The vibration damping footmat of claim 4, wherein: The inner ring body is a conductive and non-magnetic ring member, the outer ring body is a permanent magnetic ring member, and the magnetic poles on the outer circumferential side of the opposite ends of the outer ring body are the same as the magnetic poles on the inner circumferential side of one end of the inner ring body adjacent to the inner magnetic ring close to the inner ring body.

7. The damping footmat of claim 3, wherein: The permanent magnetic ring member is radially magnetized.

8. The vibration damping footmat according to any one of claims 1 to 7, characterized in that: The eddy current damping mechanism includes a second eddy current damping assembly, the second eddy current damping assembly includes a conductive disc with conductive and non-magnetic properties and a permanent magnetic disc with permanent magnetic properties, the conductive disc and the permanent magnetic disc are arranged opposite to each other, one of the conductive disc and the permanent magnetic disc is mounted on one end of the shaft core, and the other is mounted on the bottom of the inner cavity.

9. The vibration damping footmat of claim 8, wherein: The permanent magnetic disc is axially magnetized.

10. The vibration damping footmat according to any one of claims 1 to 7, characterized in that: The leaf spring includes a first spring and a second spring for matching to define the moving stroke of the shaft core, and the inner magnetic ring and the outer magnetic ring are both located between the first spring and the second spring.

11. The vibration damping footmat according to any one of claims 1 to 7, characterized in that: The shell includes a support, a ring cover mounted on one end of the support, and an end cover mounted on the other end of the support, the support is provided with an opening, the outer magnetic ring is arranged in the opening, the end cover is provided with a groove for the shaft core to extend into, the leaf spring is mounted between the end cover and the support, and the leaf spring is mounted on one end of the ring cover away from the end cover.

12. The vibration isolation footmat of claim 11, wherein: The support is provided with a first deformation slot for the deformation movement of the leaf spring at one end away from the ring cover, and / or the ring cover is provided with a second deformation slot for the deformation movement of the leaf spring at one end away from the support.

13. A compressor comprising a housing, characterized by: The machine body is provided with the damping foot pad as claimed in any one of claims 1-12.

14. A refrigeration and heating apparatus, characterized by: The compressor comprises the compressor as claimed in claim 13.

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