Damper

Abstract

The utility model provides a damper, relates to the technical field of vibration damping devices, and aims to solve the problem that the damping effect of the conventional spring damper is limited. The damper comprises a first mounting seat, a second mounting seat, a sleeve, a permanent magnet and an elastic element, the first mounting seat and the second mounting seat are oppositely arranged at an interval, and the first mounting seat and the second mounting seat can get close to each other or get away from each other; the sleeve is fixedly arranged on the face, away from the second installation base, of the first installation base, the first installation base is provided with a receding hole opposite to and communicated with a cavity of the sleeve, and the sleeve is a conductor. The permanent magnet is fixedly arranged on the second mounting seat, penetrates through the abdicating hole and can extend into the cavity of the sleeve; one end of the elastic element abuts against the first installation base, and the other end of the elastic element abuts against the second installation base. The damping effect can be enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a damping device technical field, specifically, relates to a damper. BACKGROUND

[0002] The damper is a device for reducing the kinetic energy by providing a movement resistance, and one of its uses is to reduce vibration and absorb energy, and the other use is to serve as a buffer structure in some equipment to prevent damage to the equipment caused by instantaneous impact when colliding. When the working condition is the atmospheric environment, there are various forms of damper products to choose from, such as hydraulic dampers, electromagnetic dampers, and spring dampers. However, when these dampers are applied to a vacuum environment, there are many problems: for hydraulic dampers, there may be a problem of hydraulic oil leakage polluting the vacuum chamber; for electromagnetic dampers, additional feed cables and driving circuits are required; for spring dampers, although they can be applied to a vacuum environment, the damping effect is limited, and the stiffness of the spring needs to be calculated and selected according to the momentum of the vibrating object. For a large range of momentum, the use of springs alone may not have a damping effect. SUMMARY

[0003] The utility model aims at providing a damper to solve the technical problem of the limited damping effect of the existing spring damper.

[0004] The damper provided by the utility model comprises a first mounting seat, a second mounting seat, a sleeve, a permanent magnet, and an elastic element, wherein the first mounting seat and the second mounting seat are arranged opposite to and spaced from each other, and the first mounting seat and the second mounting seat can approach or move away from each other; the sleeve is fixedly arranged on one side of the first mounting seat away from the second mounting seat, the first mounting seat is provided with a clearance hole opposite to and communicating with the cavity of the sleeve, and the sleeve is a conductor; the permanent magnet is fixedly arranged on the second mounting seat, and the permanent magnet penetrates through the clearance hole and can extend into the cavity of the sleeve; one end of the elastic element abuts against the first mounting seat, and the other end of the elastic element abuts against the second mounting seat.

[0005] Further, the second mounting seat comprises a bottom plate and a center column arranged on the bottom plate, and the permanent magnet is fixedly arranged on the center column; the elastic element comprises a spiral spring, and the spiral spring is sleeved on the center column.

[0006] Further, a plurality of sets of guide structures are arranged between the first mounting seat and the second mounting seat, the plurality of sets of guide structures are dispersedly arranged, and the guide structures are configured to guide the first mounting seat and the second mounting seat to approach or move away from each other.

[0007] Further, the guide structure comprises a guide sleeve and a guide rod, the guide sleeve is fixedly arranged on the first mounting base, the guide rod is arranged on the bottom plate, and the guide rod is in sliding fit with the guide sleeve; the first mounting base is provided with a through hole for avoiding the guide rod.

[0008] Further, the guide sleeve comprises a sleeve pipe and a shaft sleeve, the sleeve pipe is fixedly arranged on the first mounting base, the shaft sleeve is fixedly arranged on the inner pipe wall of the sleeve pipe, and the guide rod is in sliding fit with the shaft sleeve.

[0009] Further, the first mounting base is provided with a first threaded hole, and the hole axis of the first threaded hole extends along the extension direction of the elastic element.

[0010] Further, the second mounting base is provided with a second threaded hole, and the hole axis of the second threaded hole extends along the extension direction of the elastic element.

[0011] Further, the sleeve pipe is made of copper.

[0012] Further, the sleeve pipe is fixedly connected with the first mounting base in a bonding mode, and / or the sleeve pipe is fixedly connected with the first mounting base in a bolt fastening mode.

[0013] Further, the permanent magnet is fixedly connected with the second mounting base in a bonding mode, and / or the permanent magnet is fixedly connected with the second mounting base in a bolt fastening mode.

[0014] The damper brings the beneficial effects that:

[0015] By arranging the damper mainly composed of the first mounting base, the second mounting base, the sleeve pipe, the permanent magnet and the elastic element, in use, one of the two parts in relative motion is connected with the first mounting base, and the other of the two parts in relative motion is connected with the second mounting base. When vibration occurs, the elastic element is compressed or stretched to absorb the vibration between the first mounting base and the second mounting base and relieve the impact force. At the same time, the permanent magnet also moves in the sleeve pipe made of conductor material. The relative movement of the two parts enables the sleeve pipe to cut the magnetic induction lines generated by the permanent magnet to generate eddy current. Through the interaction of the eddy current field and the magnetic field, Lorentz force is generated to hinder the relative movement of the sleeve pipe and the permanent magnet, so as to further absorb the vibration.

[0016] Therefore, the damper can produce mechanical damping by compression and elongation of the elastic element, and can simultaneously produce magnetic damping by relative movement of the permanent magnet and the sleeve, the superposition of the two damping effects effectively improves the vibration absorption and buffering effect of the damper, thereby effectively solving the technical problem that the damping effect of the existing spring damper is limited. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0018] Figure 1 The structural schematic diagram of the damper provided by the embodiment of the present application is shown in the figure.

[0019] Figure 2 The structural front view of the damper provided by the embodiment of the present application is shown in the figure.

[0020] Figure 3 The front view of the damper in a natural state provided by the embodiment of the present application is shown in the figure.

[0021] Figure 4 The front view of the damper in a compressed state provided by the embodiment of the present application is shown in the figure.

[0022] Explanation of reference signs:

[0023] 100-First mounting seat; 200-Second mounting seat; 300-Sleeve; 400-Permanent magnet; 500-Elastic element; 600-Guiding structure;

[0024] 110-Relief hole; 120-Through hole; 130-First threaded hole;

[0025] 210-Base plate; 220-Central column; 230-Second threaded hole;

[0026] 610-Guiding sleeve; 611-Sleeve; 612-Axle sleeve; 620-Guiding rod. DETAILED DESCRIPTION

[0027] It is known that in Lenz's law, when the conductor material makes the cutting magnetic induction line movement in the magnetic field, the eddy current is generated, the eddy current field and the magnetic field interact, the generated Lorentz force will hinder the relative movement between the conductor material and the magnetic field, at the same time, the electric eddy current will be converted into heat energy dissipation due to the resistance effect in the conductor material, thereby generating the damping effect. The conductor material or the permanent magnet is connected with the vibration structure, the relative movement is generated between the conductor material and the permanent magnet due to vibration, so that the electric eddy current is continuously generated in the conductor material, at the same time, the kinetic energy of the structure is continuously converted into heat energy, so that the vibration of the structure can be gradually attenuated. And, the eddy current effect is irrelevant to the movement direction, and the reciprocating motion can generate the electric eddy current, that is, the reciprocating motion has the damping effect. Based on such a physical process, the reasonable structure of the conductor material and the permanent magnet can be used as a damper. The damper has the advantages that: 1, the all-metal structure has low outgassing rate; 2, no power source such as electricity and gas is needed, so that the damper can be applied to a vacuum environment.

[0028] However, the load of the single damper relying on the electric eddy current effect is relatively small, and is related to the relative movement speed, when the vibration absorption of the large mass high-speed moving object is needed, the damper structure is large, and the damping effect generated by the small damper structure is limited.

[0029] Therefore, the damper is provided to solve the technical problem that the damping effect of the existing damper is limited.

[0030] In order to make the above-mentioned purpose, characteristics and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0031] Figure 1 The structural schematic view of the damper provided for the embodiment is shown in the figure; Figure 2 The structural front view of the damper provided for the embodiment is shown in the figure; Figure 3 The front view of the damper in the natural state is shown in the figure; Figure 4 The front view of the damper in the compressed state is shown in the figure. Figures 1 to 4As shown, the embodiment provides a damper, which comprises a first mounting base 100, a second mounting base 200, a sleeve 300, a permanent magnet 400 and an elastic element 500, wherein the first mounting base 100 and the second mounting base 200 are oppositely and spacedly arranged, and the first mounting base 100 and the second mounting base 200 can approach or move away from each other; the sleeve 300 is fixedly arranged on one side of the first mounting base 100 away from the second mounting base 200, the first mounting base 100 is provided with a clearance hole 110 opposite and communicating with a cavity of the sleeve 300, and the sleeve 300 is a conductor; the permanent magnet 400 is fixedly arranged on the second mounting base 200, and the permanent magnet 400 is arranged through the clearance hole 110 and can extend into the cavity of the sleeve 300; one end of the elastic element 500 abuts against the first mounting base 100, and the other end of the elastic element 500 abuts against the second mounting base 200, and the elastic element 500 is configured to make the first mounting base 100 and the second mounting base 200 always have a moving trend of moving away from each other.

[0032] In use, one of the two components in relative motion can be connected with the first mounting base 100, and the other of the two components in relative motion can be connected with the second mounting base 200. When vibration occurs, the elastic element 500 is compressed or stretched to absorb the vibration between the first mounting base 100 and the second mounting base 200 and relieve the impact force, and at the same time, the permanent magnet 400 also moves in the sleeve 300 made of a conductor material, and the relative movement of the two can cut the magnetic induction lines generated by the permanent magnet 400 to generate eddy current in the sleeve 300. Through the interaction of the eddy current field and the magnetic field, the Lorentz force is generated to hinder the relative movement of the sleeve 300 and the permanent magnet 400, thereby further absorbing the vibration.

[0033] Therefore, the damper can not only generate mechanical damping by compression and stretching of the elastic element 500, but also can generate magnetic damping by relative movement of the permanent magnet 400 and the sleeve 300 at the same time. The superposition of the two damping effects effectively improves the vibration absorption and buffering effect of the damper, thereby effectively solving the technical problem that the damping effect of the existing spring damper is limited.

[0034] In addition, compared with the traditional spring damper which only uses the deformation of the spring to absorb energy, the damper increases the eddy current damping, so that as long as the two components produce relative movement, the damping effect will be generated. Even if the stiffness of the elastic element 500 is not enough, the energy absorption and vibration damping effect can still be generated, thereby reducing the difficulty of selection of the elastic element 500.

[0035] Please continue to refer to Figures 2 to 4In the embodiment, the second mounting seat 200 can include a bottom plate 210 and a center column 220 arranged at the center of the bottom plate 210, and specifically, the permanent magnet 400 is fixedly arranged at the center column 220; and the elastic element 500 includes a coil spring, which is sleeved on the center column 220.

[0036] The second mounting seat 200 is arranged in this way, which can increase the support height by using the center column 220, so as to reduce the arrangement height of the permanent magnet 400, and on the other hand, the center column 220 can also be used to install and guide the elastic element 500, so as to avoid the elastic element 500 from being twisted during the extension and contraction process.

[0037] Please continue to refer to Figures 1 to 4 In the embodiment, a plurality of guide structures 600 can be arranged between the first mounting seat 100 and the second mounting seat 200, and specifically, the plurality of guide structures 600 are dispersedly arranged, and the guide structure 600 is configured to guide the first mounting seat 100 and the second mounting seat 200 to move close to each other or move away from each other.

[0038] The plurality of guide structures 600 are arranged to guide the relative movement of the first mounting seat 100 and the second mounting seat 200, which can make the permanent magnet 400 and the sleeve 300 always move coaxially, so as to ensure the smooth generation of eddy current, and on the other hand, it can also ensure that the elastic element 500 is compressed smoothly, so as to generate damping effect in time.

[0039] Please continue to refer to Figures 1 to 4 In the embodiment, the guide structure 600 can include a guide sleeve 610 and a guide rod 620, wherein the guide sleeve 610 is fixedly arranged on the first mounting seat 100; the guide rod 620 is arranged on the bottom plate 210, and the guide rod 620 is in sliding fit with the guide sleeve 610; and the first mounting seat 100 is provided with a through hole 120 for avoiding the guide rod 620.

[0040] Please continue to refer to Figure 3 And Figure 4 When the first mounting seat 100 and the second mounting seat 200 move relatively, for example, when the first mounting seat 100 and the second mounting seat 200 move close to each other, the guide rod 620 will move upward in the guide sleeve 610, and the sliding fit between the guide rod 620 and the guide sleeve 610 can guide the relative movement of the first mounting seat 100 and the second mounting seat 200. The through hole 120 is arranged to effectively avoid the guide rod 620 when the relative movement stroke of the first mounting seat 100 and the second mounting seat 200 is large, that is, the guide rod 620 extends upward out of the through hole 120.

[0041] The guide structure 600 is arranged in this way, which is simple in structure and reliable in guidance.

[0042] Please continue to refer to Figure 3 and Figure 4 In the embodiment, the guide sleeve 610 can include a sleeve 611 and a shaft sleeve 612, wherein the sleeve 611 is fixedly arranged on the first mounting seat 100, the shaft sleeve 612 is fixedly arranged on the inner pipe wall of the sleeve 611, and the guide rod 620 is in sliding fit with the shaft sleeve 612.

[0043] The arrangement can reduce the friction between the guide rod 620 and the guide sleeve 610 during relative sliding, thereby improving the sliding smoothness.

[0044] Please continue to refer to Figure 1 In the embodiment, the first mounting seat 100 is provided with a first threaded hole 130, and the hole axis of the first threaded hole 130 extends along the extension direction of the elastic element 500.

[0045] The arrangement of the first threaded hole 130 facilitates the connection of one of the two components in relative motion with the first mounting seat 100 through a threaded connecting piece, and the connection reliability is high.

[0046] Specifically, a first light hole can be arranged on the component connected with the first mounting seat 100, the first bolt passes through the first light hole and is screwed in the first threaded hole 130, and the reliable fixation of the two components can be achieved.

[0047] Please continue to refer to Figure 1 In the embodiment, the second mounting seat 200 is provided with a second threaded hole 230, and the hole axis of the second threaded hole 230 extends along the extension direction of the elastic element 500.

[0048] The arrangement of the second threaded hole 230 facilitates the connection of the other of the two components in relative motion with the second mounting seat 200 through a threaded connecting piece, and the connection reliability is high.

[0049] Specifically, a second light hole can be arranged on the component connected with the second mounting seat 200, the second bolt passes through the second light hole and is screwed in the second threaded hole 230, and the reliable fixation of the two components can be achieved.

[0050] In the embodiment, the material of the sleeve 300 is copper.

[0051] By setting the material of the sleeve 300 as copper, the conductive performance of the sleeve 300 can be ensured while the cost of the sleeve 300 is reduced.

[0052] In the embodiment, the sleeve 300 and the first mounting seat 100 can be fixedly connected in a bonding manner.

[0053] The sleeve 300 and the first mounting base 100 are connected in this way, and the sleeve 300 and the first mounting base 100 are fixed together without a complex connection structure, so that the overall structure of the damper in the embodiment can be simplified.

[0054] In other embodiments, the sleeve 300 and the first mounting base 100 can also be fixed and connected by bolt fastening. Specifically, a flange can be arranged on the sleeve 300, and a fastening bolt passes through the flange and is fastened to the first mounting base 100, so as to connect the sleeve 300 and the first mounting base 100.

[0055] In this way, the sleeve 300 and the first mounting base 100 are connected together by bolt fastening, which facilitates disassembly and maintenance of the sleeve 300 and the first mounting base 100, and improves the maintenance convenience.

[0056] In other embodiments, the sleeve 300 and the first mounting base 100 can also be fixed and connected by clamping. Specifically, a clamping arm that can be opened and closed can be arranged on the first mounting base 100, and the sleeve 300 is clamped and fixed to the first mounting base 100 by the clamping arm.

[0057] In the embodiment, the permanent magnet 400 and the second mounting base 200 are fixed and connected by adhesion.

[0058] The permanent magnet 400 and the second mounting base 200 are connected in this way, and the permanent magnet 400 and the second mounting base 200 are fixed together without a complex connection structure, so that the overall structure of the damper in the embodiment can be simplified.

[0059] In other embodiments, the permanent magnet 400 and the second mounting base 200 can also be fixed and connected by bolt fastening. Specifically, a flange can be arranged on the permanent magnet 400, and a fastening bolt passes through the flange and is fastened to the center column 220, so as to connect the permanent magnet 400 and the second mounting base 200.

[0060] In this way, the permanent magnet 400 and the second mounting base 200 are connected together by bolt fastening, which facilitates disassembly and maintenance of the permanent magnet 400 and the second mounting base 200, and improves the maintenance convenience.

[0061] Although the utility model discloses as above, the utility model is not limited to this. Any person skilled in the art, without departing from the spirit and scope of the utility model, can make various changes and modifications, therefore the protection scope of the utility model should be limited by the range defined in the claims.

[0062] Finally, it should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", "includes", "including" or any other variation thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0063] In the above-described embodiments, the orientation descriptions such as "upper", "lower", "side" and the like are based on the drawings shown.

[0064] The above description of disclosed embodiments provides enabling disclosure sufficient for one of ordinary skill in the art to practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A damper characterized by, The application relates to a magnetic assembly comprising a first mounting base (100), a second mounting base (200), a sleeve (300), a permanent magnet (400) and an elastic element (500), wherein the first mounting base (100) and the second mounting base (200) are oppositely and spacedly arranged, and the first mounting base (100) and the second mounting base (200) can approach or move away from each other; the sleeve (300) is fixedly arranged on one side of the first mounting base (100) away from the second mounting base (200), the first mounting base (100) is provided with a clearance hole (110) opposite to and communicating with a cavity of the sleeve (300), and the sleeve (300) is a conductor; the permanent magnet (400) is fixedly arranged on the second mounting base (200), the permanent magnet (400) penetrates through the clearance hole (110) and can extend into the cavity of the sleeve (300); one end of the elastic element (500) abuts against the first mounting base (100), and the other end of the elastic element (500) abuts against the second mounting base (200).

2. Damper according to claim 1, characterized in that The second mounting base (200) comprises a bottom plate (210) and a center column (220) arranged on the bottom plate (210), and the permanent magnet (400) is fixedly arranged on the center column (220); the elastic element (500) comprises a spiral spring, and the spiral spring is sleeved on the center column (220).

3. The damper of claim 2, wherein, A plurality of groups of guide structures (600) are further arranged between the first mounting base (100) and the second mounting base (200), the plurality of groups of guide structures (600) are dispersedly arranged, and the guide structures (600) are configured to guide the first mounting base (100) and the second mounting base (200) to approach or move away from each other.

4. The damper of claim 3, wherein The guide structure (600) comprises a guide sleeve (610) and a guide rod (620), the guide sleeve (610) is fixedly arranged on the first mounting base (100), the guide rod (620) is arranged on the bottom plate (210), and the guide rod (620) is slidably matched with the guide sleeve (610); the first mounting base (100) is provided with a through hole (120) for avoiding the guide rod (620).

5. The damper of claim 4, wherein, The guide sleeve (610) comprises a sleeve pipe (611) and a shaft sleeve (612), the sleeve pipe (611) is fixedly arranged on the first mounting base (100), the shaft sleeve (612) is fixedly arranged on an inner pipe wall of the sleeve pipe (611), and the guide rod (620) is slidably matched with the shaft sleeve (612).

6. The damper of claim 1, wherein, The first mounting base (100) is provided with a first threaded hole (130), and a hole axis of the first threaded hole (130) extends along a stretching direction of the elastic element (500).

7. The damper of claim 1, wherein The second mounting base (200) is provided with a second threaded hole (230), and a hole axis of the second threaded hole (230) extends along the stretching direction of the elastic element (500).

8. The damper of claim 1, wherein, The sleeve (300) is made of copper.

9. The damper of claim 1, wherein, The sleeve (300) is fixedly connected with the first mounting base (100) by bonding, and / or the sleeve (300) is fixedly connected with the first mounting base (100) by bolt fastening.

10. The damper of claim 1, wherein, The permanent magnet (400) is fixedly connected with the second mounting base (200) by bonding, and / or the permanent magnet (400) is fixedly connected with the second mounting base (200) by bolt fastening.

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