Vibration isolation device and precise instrument equipment

Abstract

The utility model discloses a vibration isolation device which is suitable for being connected with a precise instrument and comprises an air bag, a spring assembly, a restraining cover, an elastic assembly and a connecting assembly. The elastic assembly is suitable for being connected with the precise instrument and generates deformation when the precise instrument shakes; the airbag has a first opening and an inner cavity; the spring assembly is arranged in an inner cavity of the airbag; the connecting assembly is connected with the first opening, the connecting assembly is located between the elastic assembly and the spring assembly, the connecting assembly is provided with a damping hole, and the damping hole is suitable for guiding air into or releasing the air out of the inner cavity when the air bag deforms; the restraint cover sleeves the outer side of the air bag, and the inner wall of the restraint cover is attached to the outer wall of the air bag. Through the arrangement of the air bag, the spring assembly, the restraining cover and the elastic assembly, vibration impact transmitted from the environment can be effectively consumed, the good vibration isolation effect is achieved, and the stability and precision of a precise instrument in the using process are improved. The utility model further discloses precise instrument equipment which comprises the precise instrument and the vibration isolation device, and the precise instrument is connected with the vibration isolation device.

Description

Technical Field

[0001] This application relates to the technical field of vibration isolation for precision instruments, and particularly to a vibration isolation device and a precision instrument and equipment. Background Art

[0002] With the development of technology, precision instruments and small precision equipment are increasingly widely used in the fields of scientific research, industry, medical treatment, etc. These devices have extremely high requirements for the operating environment, especially the vibration isolation performance.

[0003] In the prior art, rubber dampers have good damping characteristics in the horizontal direction, but their load capacity is limited; metal spring dampers have a strong load capacity, but their damping effect in the horizontal direction is not ideal; although air spring dampers can take into account the damping characteristics in both horizontal and vertical directions, they require compressed air, making them inapplicable in occasions such as vehicle-mounted instruments, ship instruments, UAV photography, life science research, confocal optical tweezers, etc. where compressed air cannot be provided.

[0004] In practical applications, when precision instruments isolate vibrations in the environment, the vibration isolation effect of the dampers in the above prior art is poor. Summary of the Invention

[0005] The technical problem to be solved by this application is that when precision instruments isolate vibrations in the environment, the vibration isolation effect of the dampers in the prior art is poor. Therefore, this application proposes a vibration isolation device to solve the above problems.

[0006] A vibration isolation device, adapted to be connected to a precision instrument, includes: an airbag, a spring assembly, a constraint cover, an elastic assembly, and a connection assembly. The elastic assembly is adapted to be connected to the precision instrument and deforms when the precision instrument shakes. The airbag has a first opening and an inner cavity. The spring assembly is disposed in the inner cavity of the airbag.

[0007] The connection assembly is disposed at the first opening and connected to the first opening. The connection assembly is located between the elastic assembly and the spring assembly and abuts against the first end faces of the elastic assembly and the spring assembly. The connection assembly has a damping hole, and the damping hole is adapted to introduce or release air into or out of the inner cavity of the airbag when the airbag deforms. The constraint cover is sleeved outside the airbag, and the inner wall of the constraint cover fits against the outer wall of the airbag.

[0008] Optionally, the connection assembly includes: a limiting member. The limiting member includes: a first flat plate and a limiting column. The first flat plate is fixedly connected to the limiting column, and the first flat plate abuts against the elastic assembly. The limiting column is inserted into the internal cavity of the spring assembly.

[0009] Optionally, the connection component further includes: an airbag top cover. The airbag top cover includes: a cylinder, a first platform, a first step, and a second platform. The damping hole includes: a first through hole. The first end of the first platform is connected to the top end of the cylinder, and the second end of the first platform is connected to the second platform through the first step. Both the first platform and the second platform extend radially outward along the cylinder, and the first step extends along the axial direction of the cylinder.

[0010] Wherein, the cylinder is sleeved outside the limiting post, and the outer wall of the cylinder fits with the inner wall of the inner cavity of the spring assembly. The first platform fits with the first end face of the spring assembly. The edge of the first opening has a first groove, and the first groove extends radially outward along the first opening. The first groove is engaged with the second platform. The first through hole is provided on the second platform.

[0011] Optionally, the connection component further includes: a connecting plate. The damping hole further includes: a second through hole. The connecting plate is located between the first flat plate and the first platform and fits with the first flat plate and the first platform. The connecting plate covers the first opening. The connecting plate has a second opening, and the limiting post passes through the second opening. The second through hole is provided on the connecting plate and is staggered from the position of the first through hole.

[0012] Optionally, the vibration isolation device further includes: a protective ring. The top of the restraint cover has a third opening, and the protective ring is provided at the edge of the third opening and is engaged with the third opening. The protective ring fits with the connecting plate. There is a gap between the protective ring and the elastic component, and the gap is adapted to expose the second through hole.

[0013] Optionally, the vibration isolation device further includes: a first bottom plate. The first bottom plate is provided at the inner bottom end of the airbag, and the first bottom plate is engaged with the second end face of the spring assembly.

[0014] Optionally, the vibration isolation device further includes: a second bottom plate. The second bottom plate connects the bottom of the airbag and the bottom of the restraint cover.

[0015] Optionally, the second bottom plate is connected to the restraint cover by bolts.

[0016] Optionally, the vibration isolation device further includes: a connecting column. The elastic component is adapted to be connected to the precision instrument through the connecting column.

[0017] This application also provides a precision instrument device, including: a precision instrument and a vibration isolation device, and the precision instrument is connected to the vibration isolation device.

[0018] This application has the following technical effects:

[0019] Through the settings of the airbag, spring assembly, restraint cover and elastic component, the vibration impact transmitted from the environment can be effectively dissipated, achieving a good vibration isolation effect and improving the stability and accuracy of the precision instrument during use. Description of the Drawings

[0020] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present application will become readily understood. In the drawings, several embodiments of the present application are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts.

[0021] Figure 1 It is a schematic cross-sectional view of a vibration isolation device according to an embodiment of the present application.

[0022] Figure 2 It is a schematic three-dimensional structure view of a vibration isolation device according to an embodiment of the present application.

[0023] Figure 3 It is a schematic three-dimensional structure view of the restraint cover in an embodiment of the present application.

[0024] Figure 4 It is a schematic cross-sectional view of the airbag, protection unit and connection component in an embodiment of the present application.

[0025] Figure 5 It is a schematic cross-sectional view of the spring assembly and connection component in an embodiment of the present application.

[0026] Figure 6 It is a schematic cross-sectional view of the connection component in an embodiment of the present application.

[0027] Figure 7 It is a schematic three-dimensional structure view of the precision instrument and equipment in an embodiment of the present application.

[0028] Description of the Reference Numerals in the Drawings:

[0029] 1. Airbag; 2. Spring assembly; 3. Restraint cover; 4. Elastic component; 5. Protection ring; 6. Connection component; 61. Damping hole; 611. First through hole; 612. Second through hole; 62. Limiting member; 621. First flat plate; 622. Limiting column; 63. Airbag top cover; 631. Cylinder; 632. First platform; 633. Second platform; 64. Connection plate; 7. First bottom plate; 8. Second bottom plate; 9. Connection column; 10. Precision instrument; 11. Vibration isolation device. Detailed Embodiments

[0030] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0031] It should be understood that when terms such as "first" and "second" are used in the claims, the description, and the drawings of the present application, they are only used to distinguish different objects, rather than to describe a specific order. The terms "comprising" and "including" used in the description and claims of the present application indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0032] An embodiment of the present application discloses a vibration isolation device 11, which is adapted to be connected to a precision instrument 10. Referring to Figure 1 as shown, it includes: an airbag 1, a spring assembly 2, a restraint cover 3, an elastic assembly 4, and a connection assembly 6.

[0033] Among them, the elastic assembly 4 is adapted to be connected to the precision instrument 10 and deforms when the precision instrument 10 shakes. The airbag 1 has a first opening and an inner cavity, and the first opening is provided at the top of the airbag 1. The spring assembly 2 is arranged in the inner cavity of the airbag 1, and the spring assembly 2 is coaxially arranged with the airbag 1.

[0034] Moreover, the connection assembly 6 is arranged at the first opening and connected to the first opening. The connection assembly 6 is located between the elastic assembly 4 and the spring assembly 2 and abuts against the first end faces of the elastic assembly 4 and the spring assembly 2. The first end face of the spring assembly 2 is the side close to the elastic assembly 4.

[0035] In addition, the connection assembly 6 has a damping hole 61, and the damping hole 61 is adapted to introduce external air into the inner cavity of the airbag 1 or release the air in the inner cavity of the airbag 1 when the airbag 1 deforms. The restraint cover 3 is sleeved outside the airbag 1, and the inner wall of the restraint cover 3 fits the outer wall of the airbag 1. The restraint cover 3 is adapted to limit the lateral deformation of the airbag 1.

[0036] In this embodiment, part of the vibration impact comes from the shaking generated when operating the precision instrument 10, and the main vibration impact comes from the environment where the precision instrument 10 is located. The vibration impact generated in the environment is irregular, indefinite, and unidirectional impact energy.

[0037] After the airbag 1 is subjected to vibration and impact, it will be compressed and deformed, and the air in the inner cavity of the airbag 1 will be released to the outside through the damping holes 61, so as to generate heat through deformation and dissipate the heat, thereby exerting the damping characteristic of the airbag 1. In addition, through the setting of the restraint cover 3, during the deformation process of the airbag 1, the outward expansion of the airbag 1 in the horizontal direction can be effectively restrained, and the change rate of the internal pressure in the inner cavity of the airbag 1 and the amount of deformation of being flattened in the vertical direction when the airbag 1 is subjected to vibration and impact can be slowed down; moreover, the restraint cover 3 in this embodiment is a cylindrical shape with openings at both ends, and the side wall of the restraint cover 3 fits with the side wall of the airbag 1 and is arranged in imitation of the side wall of the airbag 1, so that when the airbag 1 is deformed and squeezes the restraint cover 3, the force on the squeezing part of the restraint cover 3 and the airbag 1 is uniform, thereby avoiding the situation that the restraint cover 3 ruptures when the airbag 1 deforms, and improving the safety and stability of the vibration isolation device 11.

[0038] In addition, after the spring assembly 2 is subjected to vibration and impact, it will be compressed together with the airbag 1, and the height of the spring assembly 2 will decrease. When the bearing capacity of the spring assembly 2 itself is greater than the vibration and impact it receives, the spring assembly 2 will generate a rebound, and the height of the spring assembly 2 will increase; at the same time, it also provides an upward supporting force for the airbag 1, and sucks the outside air into the inner cavity of the airbag 1 through the damping holes 61, so that the airbag 1 can generate a rebound. Through the setting of the spring assembly 2, the continuous deformation of the airbag 1 can be effectively realized, that is, the airbag 1 is repeatedly compressed and expanded. The energy conversion of the airbag 1 is accelerated. By converting the pressure difference in the inner cavity of the airbag 1 into the heat energy generated by deformation, the heat energy is dissipated through natural emission, thereby effectively exerting the damping characteristics of the spring assembly 2 and the airbag 1 to consume the vibration and impact transmitted to the vibration isolation device 11.

[0039] Through the setting of the airbag 1, the spring assembly 2 and the damping holes 61, the function of the air spring can be realized, and without adding external energy, it can not only enhance the damping characteristic, but also reduce the cost and volume, make the installation position of the vibration isolation device 11 more flexible, and can effectively consume the vibration and impact transmitted from the environment.

[0040] Moreover, when the elastic component 4 is subjected to vibration and impact, it will be compressed, flattened and cause outward expansion in the horizontal direction, further increasing the density inside the elastic component 4. If there is vibration in the horizontal direction, due to the change in the density of the elastic component 4, there is a great restraint force in the horizontal direction of the elastic component 4, and the elastic component 4 can well exert the damping characteristic in the horizontal direction, so as to effectively consume the vibration and impact transmitted to the vibration isolation device 11 through the elastic component 4. In this embodiment, the natural frequency of the elastic component 4 in the horizontal direction is 11 - 13 Hz, and after being superimposed with the airbag 1, it can be reduced to 4 - 8 Hz, and the damping characteristic can be better exerted through the combination of the two.

[0041] It should be noted that in this embodiment, the bottom of the airbag 1 is relatively thick, which is suitable for concentrating the deformation of the airbag 1 on the side, improving the stability and damping characteristics of the vibration isolation device 11. The specific shape, material and structure of the airbag 1 are not limited in this application. The shape of the airbag 1 can also be set as a bowl shape or other shapes, and can be reasonably selected and set according to actual needs.

[0042] Secondly, in this application, the spring assembly 2 can be realized by a spring with a height of 25 mm, a full compression stroke of 12.5 mm, and a single-body load of 32 kg. If the weight of the precision instrument 10 to be carried increases, a spring with a compression amount of 20% or 30% can be replaced. The specific structure and quantity of the spring assembly 2 are not limited in this application and can be reasonably selected and set according to actual needs.

[0043] In addition, the elastic component 4 in this embodiment can be realized by rubber with a hardness of HA40. The specific shape, material and structure of the elastic component 4 are not limited in this application and can be reasonably selected and set according to actual needs.

[0044] Furthermore, the restraint cover 3 in this embodiment can be realized by a rigid material, such as aluminum or 304 stainless steel. The specific shape, material and structure of the restraint cover 3 are not limited in this application and can be reasonably selected and set according to actual needs.

[0045] The above components will be described in detail below.

[0046] See Figures 4 to 6 As shown, the connection component 6 includes: a limiting member 62. The limiting member 62 includes: a first flat plate 621 and a limiting column 622. The first flat plate 621 is fixedly connected to the limiting column 622. The first flat plate 621 and the limiting column 622 are coaxially arranged. The first flat plate 621 abuts against the elastic component 4. The limiting column 622 is inserted into the internal cavity at the top of the spring assembly 2.

[0047] Among them, the way that the first flat plate 621 abuts against the elastic component 4 can be realized by bolt connection. The connection way between the first flat plate 621 and the elastic component 4 is not limited in this application and can be integrally formed or other connection ways, and can be reasonably selected and set according to actual needs. In addition, through the setting of the limiting column 622, the position of the spring assembly 2 in the horizontal direction can be well limited, so that the spring assembly 2 will not have a horizontal offset when consuming vibration shock, improving the safety and stability of the vibration isolation device 11. The limiting member 62 in this embodiment can be realized by aluminum or 304 stainless steel. The specific material and structure of the limiting member 62 are not limited in this application and can be reasonably selected and set according to actual needs.

[0048] Further, the connection component 6 further includes: an airbag top cover 63. The airbag top cover 63 includes: a cylinder 631, a first platform 632, a first step, and a second platform 633. The damping hole 61 includes: a first through hole 611.

[0049] The first end of the first platform 632 is connected to the top end of the cylinder 631, the second end of the first platform 632 is connected to the second platform 633 through the first step, both the first platform 632 and the second platform 633 extend radially outward along the cylinder 631, and the first step extends axially downward along the cylinder 631. The first end of the first platform 632 and the second end of the first platform 632 are oppositely arranged, wherein the first end of the first platform 632 is the end close to the axis of the cylinder 631, and the second end of the first platform 632 is the end far from the axis of the cylinder 631.

[0050] Wherein, the cylinder 631 is sleeved outside the limit post 622, the inner wall of the cylinder 631 is attached to the outer wall of the limit post 622, and the outer wall of the cylinder 631 is attached to the inner wall of the inner cavity of the spring assembly 2. The cylinder 631 and the limit post 622 are coaxially arranged. The lower part of the first platform 632 is attached to the first end face of the spring assembly 2. The edge of the first opening has a first groove, the first groove extends radially outward along the first opening, and the first groove is clamped with one end of the second platform 633. The first through hole 611 is arranged on the second platform 633.

[0051] By sleeving the cylinder 631 outside the limit post 622 and clamping the second platform 633 with the first groove of the airbag 1, it is suitable to achieve a relatively airtight state between the airbag 1 and the airbag top cover 63 except for the damping hole 61. With the setting of the spring assembly 2, the effect of an air spring can be achieved, effectively consuming the transmitted vibration shock, and also improving the damping characteristics of the vibration isolation device 11.

[0052] The damping hole 61 in this embodiment can be realized by a hole with a diameter of φ1mm. The size of the damping hole 61 can be calculated according to the effective volume of the airbag 1 and actual needs, and can be reasonably selected and set according to actual needs as long as the airbag 1 can stably exhibit damping characteristics. In this embodiment, the airbag top cover 63 can be made of aluminum or 304 stainless steel. The present application does not limit the specific shape and material of the airbag top cover 63, and can be reasonably selected and set according to actual needs.

[0053] Specifically, the connecting component 6 further includes: a connecting plate 64. The damping hole 61 further includes: a second through hole 612. The connecting plate 64 is located between the first flat plate 621 and the first platform 632 and is in contact with the first flat plate 621 and the first platform 632. The connecting plate 64 covers the first opening. The connecting plate 64 has a second opening. The connecting plate 64 is a disc with a second opening, and the limiting post 622 passes through the second opening. The second through hole 612 is provided on the connecting plate 64 and is offset from the position of the first through hole 611.

[0054] Through the arrangement of the connecting plate 64, the vibration impact received by the elastic component 4 can be stably transmitted to the top of the airbag 1 and the airbag top cover 63. And since the airbag top cover 63 is in contact with the first end face of the spring component 2, the vibration impact transmitted to the airbag top cover 63 can be stably transmitted to the spring component 2. Therefore, through the arrangement of the connecting plate 64, the vibration impact received by the elastic component 4 can be stably transmitted to the airbag 1 and the spring component 2, and the airbag 1 and the spring component 2 can consume the transmitted vibration impact, making the damping characteristics of the vibration isolation device 11 more stable and efficient.

[0055] Since the connecting plate 64 is arranged above the airbag top cover 63 and covers the first opening of the airbag 1, the first through hole 611 can play a role only when the connecting plate 64 has the second through hole 612. The apertures of the first through hole 611 and the second through hole 612 are the same. Through the arrangement of the first through hole 611 and the second through hole 612, the air in the inner cavity of the airbag 1 can be exchanged with the outside air, achieving the purpose of the airbag 1 consuming vibration impact. In addition, the arrangement that the second through hole 612 is offset from the position of the first through hole 611 can buffer the air introduced from the outside or the air released from the inner cavity of the airbag 1, and better play the damping characteristics of the airbag 1.

[0056] It should be noted that in this embodiment, the connecting plate 64 can be made of aluminum or 304 stainless steel. The present application does not limit the specific shape and material of the connecting plate 64, and reasonable selection and setting can be made according to actual needs. In addition, the present application does not limit the positions of the first through hole 611 and the second through hole 612 either, and they can also be coaxially arranged, and reasonable selection and setting can be made according to actual needs.

[0057] More specifically, refer to Figure 1 、 Figure 2 And in combination with Figure 4As shown, the vibration isolation device 11 further includes: a protective ring 5. The top of the constraint cover 3 has a third opening, and the protective ring 5 is disposed at the edge of the third opening and is snap-fitted with the third opening. The protective ring 5 is in contact with the connecting plate 64. There is a gap between the protective ring 5 and the elastic component 4, and the gap is adapted to expose the second through hole 612, so that the air outside or the gas in the inner cavity of the airbag 1 can be exchanged through the gap, the first through hole 611, and the second through hole 612. The gap is also adapted to accommodate the horizontal expansion of the elastic unit 4 caused by vibration impact.

[0058] By providing the protective ring 5, firstly, a limiting effect can be achieved: it can restrict the horizontal sway of the elastic component 4 when consuming vibration impact. Since the limiting member 62 restricts the horizontal displacement of the spring component 2, the protective ring 5 can also restrict the sway range of the spring component 2. Secondly, the protective ring 5 plays a protective role: when the elastic component 4, the spring component 2, and the airbag are continuously compressed and rebounded, by connecting the constraint cover 3 and the connecting plate 64 through the protective ring 5, it can prevent the constraint cover 3 and the connecting plate 64 from directly contacting each other, effectively avoiding damage to both; at the same time, when the elastic component 4 consumes vibration impact, it will produce horizontal expansion, and if it is subjected to vibration impact in the horizontal direction, it will produce horizontal sway. By disposing the protective ring 5 between the constraint cover 3 and the elastic component 4, it can prevent the sharp edge of the constraint cover 3 from cutting the elastic component 4, playing a protective role for the elastic component 4. Therefore, by providing the protective ring 5, the stability and safety of the vibration isolation device are improved.

[0059] It should be noted that in this embodiment, the protective ring 5 can be made of rubber. The present application does not limit the specific shape and material of the protective ring 5, and can be reasonably selected and set according to actual needs.

[0060] Furthermore, as shown in Figure 1 the vibration isolation device 11 further includes: a first bottom plate 7. The first bottom plate 7 is disposed at the inner bottom end of the airbag 1, and the first bottom plate 7 is snap-fitted with the second end face of the spring component 2.

[0061] The first end face and the second end face of the spring component 2 are two corresponding faces. A second groove is provided at the inner bottom end of the airbag 1, and the first bottom plate 7 is clamped in the second groove. The first bottom plate 7 is arranged in a shape similar to the outer side of the spring component 2. By providing the first bottom plate 7 and combining with the limit post 622, the position of the spring component 2 can be well defined, and the stability of the vibration isolation device 11 can be improved, so that the vibration isolation device 11 can consume vibration impact more efficiently.

[0062] It should be noted that, in this embodiment, the first bottom plate 7 can be made of aluminum or 304 stainless steel. The present application does not limit the specific shape and material of the first bottom plate 7, and reasonable selection and setting can be made according to actual needs.

[0063] Specifically, referring to Figures 1 to 3 as shown, the vibration isolation device 11 further includes: a second bottom plate 8. The second bottom plate 8 connects the bottom of the airbag 1 and the bottom of the restraint cover 3. The second bottom plate 8 is connected to the restraint cover 3 by bolts.

[0064] In this embodiment, the bottom of the restraint cover 3 has a connection platform, and four connection holes are provided on the connection platform. The second bottom plate 8 is bolted to the restraint cover 3 through the connection holes. The second bottom plate 8 is adapted to be connected to an external instrument or desktop. The present application does not limit the connection method between the vibration isolation device 11 and the outside. In this embodiment, the second bottom plate 8 can also be removed, and the restraint cover 3 can be directly bolted to the outside through the connection holes, or the bolts can be extended, and the restraint cover 3 can be bolted to the outside through the second bottom plate 8. Reasonable selection and setting can be made according to actual needs.

[0065] Through the setting of the second bottom plate 8, the connection between the vibration isolation device 11 and the outside is made more convenient, fast and stable, and the vibration isolation device 11 is made more stable and efficient when consuming vibration shock.

[0066] It should be noted that, in this embodiment, the second bottom plate 8 can be made of aluminum or 304 stainless steel. The present application does not limit the specific shape and material of the second bottom plate 8, and reasonable selection and setting can be made according to actual needs.

[0067] More specifically, referring to Figure 1 and Figure 2 as shown, the vibration isolation device 11 further includes: a connecting column 9. The elastic component 4 is adapted to be connected to the precision instrument 10 through the connecting column 9. The connecting column 9 has a second flat plate, and the second flat plate is bolted to the upper end of the elastic component 4.

[0068] It should be noted that, in this embodiment, the connecting column 9 can be made of aluminum or 304 stainless steel. The present application does not limit the specific shape and material of the connecting column 9, and reasonable selection and setting can be made according to actual needs.

[0069] Referring to Figure 7 as shown, the present application also discloses a precision instrument device, including: a precision instrument 10 and a vibration isolation device 11, and the precision instrument 10 is connected to the vibration isolation device 11.

[0070] In this embodiment, four vibration isolation devices 11 are combined with a flat plate and arranged under the precision instrument 10 to isolate the vibration and shock in the environment. The four vibration isolation devices 11 are evenly distributed and connected to the lower part of the flat plate, and the upper part of the flat plate is connected to the precision instrument 10. In addition, the vibration isolation devices 11 can also be arranged inside the precision instrument 10. The vibration isolation devices 11 can be grouped in pairs, in groups of four, or in multiple groups, and in cooperation with the flat plate, they are connected to the precision instrument 10 in a single-group symmetric, multi-group symmetric, or multi-group laminated manner, and are arranged at the bottom or inside of the precision instrument 10.

[0071] To facilitate the understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0072] When the vibration isolation device 11 is placed above the precision instrument 10, the vibration isolation device 11 will bear the gravity of the precision instrument 10, and the gravity of the precision instrument 10 is the load. First, the load is transmitted to the elastic component 4 through the connecting column 9. The elastic component 4 bears the load and is compressed, that is, the elastic component 4 is flattened, and at the same time expands outward in the horizontal direction, making the internal density of the elastic component 4 increase, and the elastic component 4 weakens the load once.

[0073] Secondly, after the elastic component 4 weakens the load once, the load after the first weakening is transmitted to the connecting plate 64 through the limiting member 62. The connecting plate 64 is attached to the top of the airbag 1 and the airbag top cover 63, and the airbag top cover 63 is attached to the first end face of the spring assembly 2, so that the elastic component 4 transmits the load after the first weakening to the spring assembly 2 and the airbag 1, and both are compressed to produce a certain degree of deformation.

[0074] Among them, when the airbag 1 bears the load and is flattened, the air in the inner cavity is discharged through the damping hole 61, and the constraint cover 3 can restrain the outward expansion of the airbag 1 in the horizontal direction, so that the deformation of the airbag 1 is concentrated in the vertical direction. At the same time, the spring assembly 2 bears the load and is compressed. When the bearing capacity of the spring assembly 2 itself is greater than the load it receives, the spring assembly 2 rebounds, and drives the damping hole 61 to introduce the outside air into the inner cavity of the airbag 1, and the airbag 1 also rebounds. After the airbag 1, the spring assembly 2 and the elastic component 4 are continuously compressed and rebounded, the load borne by the vibration isolation device 11 is gradually consumed until the vibration isolation device 11 is stable and motionless. So far, the precision instrument equipment composed of the precision instrument 10 and the vibration isolation device 11 has achieved structural stability.

[0075] When the environment where the precision instrument and equipment is located generates vibration and shock, the vibration and shock are in direct contact with the second bottom plate 8. Since the second bottom plate 8 and the restraint cover 3 are rigid structures, the vibration and shock in the environment can be transmitted to the elastic component 4 and the precision instrument 10 above. After the elastic component 4 bears the load, it is flattened and the internal density becomes larger, and the binding force in the horizontal and vertical directions is more superior. The elastic component 4 is more stable. At the same time, the precision instrument 10 will shake, breaking the structural stability of the precision instrument and equipment, and realizing the vibration isolation effect of the vibration isolation device 11.

[0076] The precision instrument 10 will transmit the vibration and shock to the vibration isolation device 11 below. The elastic component 4, the spring component 2 and the airbag 1 in the vibration isolation device 11 will be continuously compressed and rebounded to consume the vibration and shock transmitted in the environment, thereby reducing or eliminating the vibration and shock of the environment on the precision instrument 10.

[0077] Generally speaking, a vibration isolation device provided by the present application is suitable for being connected to a precision instrument, and includes: an airbag, a spring component, a restraint cover, an elastic component and a connection component; the elastic component is suitable for being connected to the precision instrument and deforms when the precision instrument shakes; the airbag has a first opening and an inner cavity; the spring component is arranged in the inner cavity of the airbag; the connection component is arranged at the first opening and is connected to the first opening. The connection component is located between the elastic component and the spring component and abuts against the first end surfaces of the elastic component and the spring component. The connection component has a damping hole, and the damping hole is suitable for introducing or releasing air into or out of the inner cavity of the airbag when the airbag deforms; the restraint cover is sleeved outside the airbag, and the inner wall of the restraint cover fits the outer wall of the airbag. Through the settings of the airbag, the spring component, the restraint cover and the elastic component, the present application can effectively consume the vibration and shock transmitted in the environment, achieve a good vibration isolation effect, and improve the stability and precision of the precision instrument during use. The present application also discloses a precision instrument and equipment, including a precision instrument and a vibration isolation device, and the precision instrument is connected to the vibration isolation device.

[0078] Although this specification has shown and described multiple embodiments of the present application, it is obvious to those skilled in the art that such embodiments are provided only by way of example. Those skilled in the art will think of many changes, alterations and alternative ways without departing from the spirit and idea of the present application. It should be understood that various alternative solutions to the embodiments of the present application described herein can be adopted during the practice of the present application.

[0079] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A vibration isolation device, suitable for connection with a precision instrument (10), characterized in that: include: An airbag (1), a spring assembly (2), a restraining cover (3), an elastic assembly (4) and a connecting assembly (6); The elastic component (4) is suitable for being connected to the precision instrument (10) and deforming when the precision instrument (10) shakes; The airbag (1) has a first opening and an inner cavity; The spring assembly (2) is arranged in the inner cavity of the airbag (1); The connecting component (6) is arranged at the first opening and connected to the first opening. The connecting component (6) is located between the elastic component (4) and the spring component (2) and abuts against the first end surfaces of the elastic component (4) and the spring component (2). The connecting component (6) has a damping hole (61). The damping hole (61) is suitable for introducing air into or releasing air from the inner cavity of the airbag (1) when the airbag (1) is deformed. The restraint cover (3) is sleeved on the outside of the airbag (1), and the inner wall of the restraint cover (3) fits the outer wall of the airbag (1).

2. The vibration isolation device according to claim 1, characterized in that: The connecting assembly (6) comprises: a limiting member (62); The limiting member (62) comprises: a first plate (621) and a limiting column (622); The first plate (621) is fixedly connected to the limiting column (622), and the first plate (621) is in abutment with the elastic component (4); The limiting column (622) is inserted into the internal cavity of the spring assembly (2).

3. The vibration isolation device according to claim 2, characterized in that: The connecting assembly (6) further comprises: an airbag top cover (63); The airbag top cover (63) comprises: a cylinder (631), a first platform (632), a first step and a second platform (633); the damping hole (61) comprises: a first through hole (611); The first end of the first platform (632) is connected to the top end of the cylinder (631), the second end of the first platform (632) is connected to the second platform (633) via the first step, the first platform (632) and the second platform (633) both extend radially outwards of the cylinder (631), and the first step extends axially of the cylinder (631); The cylinder (631) is sleeved outside the limiting column (622), and the outer wall of the cylinder (631) fits with the inner wall of the internal cavity of the spring assembly (2); The first platform (632) is in contact with the first end surface of the spring assembly (2); The edge of the first opening has a first groove, the first groove extends outward in the radial direction of the first opening, and the first groove is engaged with the second platform (633); The first through hole (611) is provided on the second platform (633).

4. The vibration isolation device according to claim 3, characterized in that: The connecting assembly (6) further comprises: a connecting plate (64); the damping hole (61) further comprises: a second through hole (612); The connecting plate (64) is located between the first flat plate (621) and the first platform (632), and is in contact with the first flat plate (621) and the first platform (632), and the connecting plate (64) covers the first opening; The connecting plate (64) has a second opening, and the limiting column (622) passes through the second opening; The second through hole (612) is provided on the connecting plate (64) and is staggered in position from the first through hole (611).

5. The vibration isolation device according to claim 4, characterized in that: Also includes: Protective ring (5); The top of the restraint cover (3) has a third opening, the protective ring (5) is arranged at the edge of the third opening and is engaged with the third opening, and the protective ring (5) is in contact with the connecting plate (64); There is a gap between the protective ring (5) and the elastic component (4), and the gap is suitable for exposing the second through hole (612).

6. The vibration isolation device according to claim 1, characterized in that: Also includes: A first bottom plate (7); The first bottom plate (7) is arranged at the inner bottom end of the airbag (1), and the first bottom plate (7) is snap-connected with the second end surface of the spring assembly (2).

7. The vibration isolation device according to claim 1, characterized in that: Also includes: A second bottom plate (8); The second bottom plate (8) connects the bottom of the airbag (1) and the bottom of the restraint cover (3).

8. The vibration isolation device according to claim 7, characterized in that: The second bottom plate (8) is connected to the restraint cover (3) via bolts.

9. The vibration isolation device according to claim 1, characterized in that: Also includes: Connecting column (9); The elastic component (4) is suitable for being connected to the precision instrument (10) via the connecting column (9).

10. A precision instrument, characterized in that: include: A precision instrument (10) and the vibration isolation device (11) according to any one of claims 1 to 9, wherein the precision instrument (10) is connected to the vibration isolation device (11).

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