Vibration isolation structure and camera

Abstract

The utility model relates to a kind of vibration isolation structure and camera, and vibration isolation structure includes: shell is equipped with cavity, the inner wall of cavity is equipped with limiting portion;Vibrator assembly is located in cavity, and it can be moved along preset axis relative to shell, and one end of vibrator assembly along preset axis projects cavity and is used to be connected with camera, in assembly state, vibrator assembly has preset position and vibration position;Compression spring is located in cavity and extends along preset axis, and the two ends of compression spring are respectively with the inner wall of cavity and the one end of vibrator assembly away from camera abut;Disc spring is located in cavity and is set on the outside of compression spring, and the outer periphery of disc spring is limited in limiting portion, and the inner periphery of disc spring and the one end of vibrator assembly away from camera abut, in assembly state, disc spring is negative stiffness;Adjusting assembly is set to shell, and it can drive vibrator assembly to move to preset position. Vibration isolation structure can reduce the influence of low-frequency excitation vibration, and can realize automatic reset.

Description

Technical Field

[0001] This utility model relates to the field of monitoring equipment technology, and in particular to a vibration isolation structure and a camera. Background Technology

[0002] In special scenarios such as highways and towers, cameras are exposed to high-altitude environments for extended periods, making them susceptible to low-frequency vibrations (0-20Hz), which can cause low-frequency shaking. This not only results in image jitter but also reduces the field of view due to camera tilt, thus affecting monitoring performance.

[0003] In addition, cameras usually cannot automatically reset in time after shaking, and manual climbing to reset them is not only inefficient but also poses safety hazards. Utility Model Content

[0004] Therefore, it is necessary to provide a vibration isolation structure and camera to address the above problems. This vibration isolation structure can reduce the impact of low-frequency excitation vibration and can achieve automatic reset.

[0005] This utility model first provides a vibration isolation structure for a camera, comprising:

[0006] The shell has a cavity, and the inner peripheral wall of the cavity has a limiting part;

[0007] A vibrator assembly is disposed within the cavity and is capable of moving relative to the housing along a preset axis. One end of the vibrator assembly extends out of the cavity along the preset axis and is used to connect with the camera. In the assembled state, the vibrator assembly has a preset position and a vibration position.

[0008] A compression spring is disposed in the cavity and extends along the preset axis. The two ends of the compression spring abut against the end of the vibrator assembly away from the camera and the inner wall of the cavity, respectively.

[0009] A disc spring is disposed within the cavity and sleeved outside the compression spring. The outer periphery of the disc spring is limited by the limiting portion, and the inner periphery of the disc spring abuts against the end of the vibrator assembly away from the camera. In the assembled state, the disc spring exhibits negative stiffness; and...

[0010] An adjustment component is disposed in the housing and is capable of driving the oscillator assembly to move from its vibration position to a preset position.

[0011] In the aforementioned vibration isolation structure, in the assembled state, the positive stiffness of the compression spring and the negative stiffness of the disc spring are connected in parallel, making the overall equivalent stiffness of the vibration isolation structure approach zero, achieving quasi-zero stiffness, reducing the natural frequency to near zero, reducing the impact of low-frequency excitation vibration, thereby reducing phenomena such as image jitter and reduced viewing window range of the camera, ensuring monitoring effect; when the camera shakes, the adjustment component can promptly drive the vibrator component to move from the vibration position to the preset position, thereby driving the camera to move and reset, ensuring that the camera's image and viewing window range always meet the requirements, while avoiding manual climbing and reset operations, improving operational efficiency and reducing safety hazards.

[0012] In one embodiment, the disc spring is a slotted disc spring.

[0013] With this configuration, the slotted disc spring can produce a large deformation under a small load, and has a wide negative stiffness range, so as to make precise adjustment of the stiffness performance of the slotted disc spring according to actual needs.

[0014] In one embodiment, the outer diameter D of the disc spring satisfies: D≤50mm;

[0015] The height h0 of the disc spring in its free state and the thickness t of the disc spring satisfy the following:

[0016] h0 / t≥3;

[0017] From the free state to the assembled state, the load F of the disc spring 碟 The displacement f of the disc spring in the direction of the preset axis, the displacement f1 of the inner circumference of the annular portion of the disc spring in the direction of the preset axis, and the displacement f2 of the end of the tongue portion of the disc spring away from the annular portion in the direction of the preset axis satisfy the following:

[0018] F 碟 =A3f1 3 +A2f1 2 +A1f1+A0≤50N;

[0019] f2=B3f1 3 +B2f1 2 +B1f1+B0;

[0020] f = f1 + f2 ≤ 10 mm;

[0021] Among them, A3, A2, A1, A0, B3, B2, B1, and B0 are all constants.

[0022] This configuration ensures that the effective amplitude of the disc spring under negative stiffness does not exceed 10mm; simultaneously, the dimensions of the disc spring and the load F... 碟They are all relatively small, which can meet the camera's image stabilization requirements and facilitate the processing and assembly of vibration isolation structures.

[0023] In one embodiment, the vibrator assembly includes a vibrator element and a connector. The vibrator element is disposed in the cavity and has a threaded hole extending along the preset axis. The connector has a threaded portion that can engage with the threaded hole by thread. At least a portion of the connector extends out of the cavity and is used to connect with the camera.

[0024] This configuration allows the load F of the compression spring to be adjusted by loosening or tightening the threads of the connecting parts and the threaded holes of the oscillator. 弹 The adjustment method is simple and convenient, making this vibration isolation structure suitable for cameras of different weights.

[0025] In one embodiment, the outer periphery of the oscillator is provided with a first abutting portion, the outer periphery of the connector is provided with a second abutting portion, and the oscillator assembly further includes at least one gasket, the gasket being sleeved on the outer periphery of the connector and located between the first abutting portion and the second abutting portion.

[0026] This setup allows the load F of the compression spring to be adjusted by increasing or decreasing the number of shims or by replacing shims of different thicknesses. 弹 The adjustment is more precise, improving the stability and reliability of the vibration isolation structure; the gasket can also play a buffering and protective role, reducing wear on the first and second contact parts and extending service life.

[0027] In one embodiment, the height L of the compression spring in its free state, the compression amount l0 of the compression spring from its free state to the preset position, the wire diameter d of the compression spring, the effective number of coils n of the compression spring, and the height h0 of the disc spring in its free state satisfy the following:

[0028] L-nd > 2.2h0;

[0029] l0 = L - nd - 2h0.

[0030] This configuration ensures that the compression spring has sufficient compression space, and the load F of the compression spring at the preset position can be changed by adjusting the compression amount l0. 预 This ensures that the load F of the vibration isolation structure is precisely matched with the weight of the camera, and also ensures that the compression spring is in the preset position with load F. 预 Its adjustable range can meet the needs of cameras of different weights.

[0031] In one embodiment, the adjustment component includes a drive member and an output member. The drive member is disposed in the housing and can drive the output member to reciprocate along the preset axis. The output member can be connected to the oscillator assembly to drive the oscillator assembly to move synchronously.

[0032] This configuration allows for precise control of the oscillator assembly's movement along a preset axis via the drive and output components. Furthermore, the simple structure of the adjustment assembly facilitates easy processing and assembly.

[0033] In one embodiment, the output element includes an electromagnet, and the oscillator assembly includes an adsorption portion capable of being attracted by the electromagnet; and / or,

[0034] The adjustment assembly also includes a sensor disposed on the housing, the sensor being used to detect the position of the oscillator assembly.

[0035] With this setup, the output component has a simple structure and can be easily and flexibly connected or disconnected from the oscillator assembly; the sensor accurately records position changes, ensuring that the oscillator assembly and camera can quickly and accurately reset to the preset position after shaking.

[0036] In one embodiment, the load F of the vibration isolation structure at a preset position is equal to the gravity G of the camera;

[0037] The adjustment component drives the oscillator assembly to move from its vibration position to a preset position, where the load F is... 驱 The load F of the vibration isolation structure at the vibration location 振 The gravity G of the camera and the corrected load F of the vibration isolation structure 修 satisfy:

[0038] F 驱 =F 振 -G+F 修 .

[0039] This configuration allows for convenient and precise control of the drive components to move the oscillator assembly and camera to a preset position, thereby ensuring the accuracy and reliability of camera reset and improving the position control precision of the vibration isolation structure.

[0040] This utility model embodiment also provides a camera, including a camera and at least one vibration isolation structure as shown above. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a three-dimensional structural diagram of a vibration isolation structure according to one embodiment of the present invention;

[0043] Figure 2 Provided by this utility model Figure 1 Exploded view of the vibration isolation structure;

[0044] Figure 3 Provided by this utility model Figure 1 A cross-sectional view of the vibration isolation structure;

[0045] Figure 4 Provided by this utility model Figure 2 Dimensional diagrams of medium compression springs and disc springs;

[0046] Figure 5 Provided by this utility model Figure 4 A schematic diagram of the partial deformation of the disc spring;

[0047] Figure 6 This is a three-dimensional structural diagram of a camera according to one embodiment of the present invention;

[0048] Figure 7 This is a load-displacement curve of a vibration isolation structure according to one embodiment of the present invention;

[0049] Figure 8 This is a low-frequency vibration isolation rate curve of a vibration isolation structure according to one embodiment of the present invention.

[0050] Reference numerals: 100, vibration isolation structure; 1, housing; 11, cavity; 12, limiting part; 13, base; 14, cover; 141, through hole; 2, oscillator assembly; 21, oscillator component; 211, threaded hole; 212, first abutment part; 213, oscillator part; 214, extension part; 22, connector; 221, threaded part; 222, second abutment part; 223, connecting part; 23, gasket; 3, compression spring; 4, disc spring; 41, annular part; 42, tongue part; 5, adjustment assembly; 51, driving component; 52, output component; 53, sensor; 200, camera. Detailed Implementation

[0051] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0052] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0056] In special scenarios such as highways and towers, cameras are exposed to high-altitude environments for extended periods, making them susceptible to low-frequency vibrations (0-20Hz), leading to low-frequency shaking. This not only causes image jitter but also reduces the field of view due to camera tilt, affecting monitoring effectiveness. Furthermore, cameras typically cannot automatically reset promptly after shaking, and manual resetting by climbing to a higher position is not only inefficient but also poses safety hazards.

[0057] To solve the above problems, such as Figures 1 to 8 As shown, this utility model provides a vibration isolation structure and a camera. The vibration isolation structure can reduce the impact of low-frequency excitation vibration and can achieve automatic reset.

[0058] like Figure 1 , Figure 3 and Figure 6 As shown, specifically, the vibration isolation structure 100 is used for the camera 200, including a housing 1, a vibrator assembly 2, a compression spring 3, a disc spring 4, and an adjustment assembly 5, wherein: the housing 1 is provided with a cavity 11, and the inner peripheral wall of the cavity 11 is provided with a limiting part 12; the vibrator assembly 2 is disposed in the cavity 11 and can move relative to the housing 1 along a preset axis (parallel to the X-axis shown in the figure), one end of the vibrator assembly 2 along the preset axis extends out of the cavity 11 and is used to connect with the camera 200; in the assembled state, the vibrator assembly 2 has a preset position and a vibration position; Compression spring 3 is disposed inside cavity 11 and extends along a preset axis. The two ends of compression spring 3 abut against the end of vibrator assembly 2 away from camera 200 and the inner wall of cavity 11, respectively. Disc spring 4 is disposed inside cavity 11 and sleeved outside compression spring 3. The outer periphery of disc spring 4 is limited to limiting part 12, and the inner periphery of disc spring 4 abuts against the end of vibrator assembly 2 away from camera 200. In the assembled state, disc spring 4 has negative stiffness. Adjustment component 5 is disposed in housing 1 and can drive vibrator assembly 2 to move from vibration position to preset position.

[0059] In this embodiment, a camera 200 can be supported by one, two, three, four or more vibration isolation structures 100, depending on actual needs. No specific limitation is made here.

[0060] It should be noted that in its natural state, i.e., its uncompressed state, the disc spring 4 is in... Figure 5 The solid line indicates the state where the disc spring 4 exhibits positive stiffness, meaning that the rebound force increases with increasing displacement. In the assembled state, i.e., the compressed state, the disc spring 4 is in... Figure 5The state indicated by the dashed line shows that the disc spring 4 exhibits negative stiffness, meaning that the rebound force decreases as the displacement increases. The compression spring 3, however, always exhibits positive stiffness, meaning that the rebound force increases as the displacement increases. The preset position refers to the position of the vibrator assembly 2 and the camera 200 under normal operating conditions. At this position, the image and viewing area meet the requirements, and the sum of the loads F of each vibration isolation structure 100 at the preset position is equal to the weight G of the camera 200. The vibration position refers to the position of the vibrator assembly 2 and the camera 200 after they have shaken, i.e., a position other than the preset position.

[0061] In the vibration isolation structure 100 provided in this embodiment of the present invention, in the assembled state, the positive stiffness of the compression spring 3 and the negative stiffness of the disc spring 4 are connected in parallel, so that the overall equivalent stiffness of the vibration isolation structure 100 approaches zero. That is, when the displacement increases, the rebound force remains basically unchanged, achieving quasi-zero stiffness, reducing the natural frequency to near zero, reducing the influence of low-frequency excitation vibration, thereby reducing image jitter and window range reduction of the camera 200, ensuring monitoring effect. When the camera 200 shakes, the adjustment component 5 can promptly drive the vibrator component 2 from the vibration position to the preset position to drive the camera 200 to reset, ensuring that the image and window range of the camera 200 always meet the requirements, while avoiding manual climbing and reset operation, improving operation efficiency and reducing safety hazards.

[0062] Furthermore, the vibration isolation structure 100 only requires one disc spring 4 to achieve near-zero stiffness. It has a simple structure and occupies less space for movement along the preset axis, which makes it easier to control and maintain the vibration isolation performance.

[0063] like Figures 2 to 3 As shown, in one embodiment, the housing 1 includes a detachably connected base 13 and a cover 14. The cover 14 and the base 13 form a cavity 11. The cover 14 has a through hole 141 communicating with the cavity 11. One end of the vibrator assembly 2 along a preset axis extends out of the cavity 11 through the through hole 141 and is used to connect with the camera 200. The detachable connection of the base 13 and the cover 14 facilitates the user's disassembly, assembly, and maintenance of the vibrator assembly 2, the compression spring 3, and the disc spring 4. The base 13 and the cover 14 can be sealed and fixed by fasteners such as screws and bolts, or by snap-fit, plug-in, or screw-fit methods, making the structure of the housing 1 simple and ensuring no risk of oil leakage or contamination. Of course, in other embodiments, the housing 1 can also be set as a non-detachable structure according to actual needs, for example, the base 13 and the cover 14 can be sealed and fixed by adhesive, welding, or other methods, or the housing 1 can be set as an integral structure.

[0064] Furthermore, the limiting part 12 can be provided on the outer periphery of the inner bottom wall of the base 13, and the inner bottom wall of the base 13 is gradually inclined from the outer periphery towards the side away from the cover 14, so that the disc spring 4 has a certain deformation space; or, the limiting part 12 can also be provided on the inner periphery wall of the base 13, and there is a certain distance between it and the inner bottom wall of the base 13, so that the disc spring 4 has a certain deformation space.

[0065] like Figure 4 As shown, in one embodiment, the disc spring 4 is a slotted disc spring. It should be noted that a common disc spring refers to a washer-type spring with a frustoconical cross-section, forged from sheet metal or forged blanks; a slotted disc spring refers to a common disc spring with radial grooves cut from the inside out, forming an annular portion 41 and multiple tongue portions 42 evenly spaced along the circumference of the annular portion 41, each tongue portion 42 extending inward from the inner circumference of the annular portion 41. Slotted disc springs can produce large deformation under relatively small loads and have a wide negative stiffness range, allowing for precise adjustment of the stiffness performance of the slotted disc spring according to actual needs.

[0066] like Figures 3 to 4 As shown, since the camera 200 is relatively lightweight, typically weighing between 0.5 kg and 5 kg, the outer diameter D of the disc spring 4 satisfies: D ≤ 50 mm; the height h0 of the disc spring 4 in its free state and the thickness t of the disc spring 4 satisfy: h0 / t ≥ 3; from the free state to the assembled state, the load F of the disc spring 4... 碟 The displacement f of the disc spring 4 in the preset axial direction, the displacement f1 of the inner circumference of the annular portion 41 of the disc spring 4 in the preset axial direction, and the displacement f2 of the end of the tongue portion 42 of the disc spring 4 away from the annular portion 41 in the preset axial direction satisfy the following:

[0067] F 碟 =A3f1 3 +A2f1 2 +A1f1+A0≤50N;

[0068] f2=B3f1 3 +B2f1 2 +B1f1+B0;

[0069] f = f1 + f2 ≤ 10 mm;

[0070] Among them, A3, A2, A1, A0, B3, B2, B1, and B0 are all constants and are determined by the structural dimensions of the disc spring 4.

[0071] Thus, F 碟The relationship between f1 and f2 is a cubic polynomial function. By ensuring that f1 and f2 satisfy the above formula, the effective amplitude of the disc spring 4 when it has negative stiffness is ensured to be no greater than 10mm. Meanwhile, the dimensions of the disc spring 4 and the load F... 碟 Both are relatively small, which can meet the image stabilization requirements of camera 200 and facilitate the processing and assembly of vibration isolation structure 100.

[0072] Of course, in other embodiments, the disc spring 4 can also be a regular disc spring.

[0073] like Figures 2 to 3 As shown, in one embodiment, the oscillator assembly 2 includes an oscillator 21 and a connector 22. The oscillator 21 is disposed within the cavity 11 and has a threaded hole 211 extending along a predetermined axis. The connector 22 has a threaded portion 221 that can engage with the threaded hole 211. At least a portion of the connector 22 extends out of the cavity 11 and is used to connect to the camera 200. Thus, by loosening or tightening the threaded portion 221 of the connector 22 and the threaded hole 211 of the oscillator 21, the distance between the connector 22 and the inner bottom wall of the cavity 11 can be adjusted, thereby changing the deformation of the compression spring 3 and adjusting the load F of the compression spring 3. 弹 Furthermore, this adjustment method is simple and convenient, making the vibration isolation structure 100 suitable for cameras 200 of different weights.

[0074] Among them, F 弹 =k1(f 振 +l0), k1 is the stiffness coefficient of compression spring 3, l0 is the compression amount of compression spring 3 from the free state to the preset position, f 振 The displacement of the compression spring 3 from the preset position to the vibration position, that is, at the preset position, f 振 =0, F=F 碟 +F 弹 =G.

[0075] like Figures 1 to 3 As shown, further, the outer periphery of the vibrator 21 is provided with a first abutment portion 212, and the outer periphery of the connector 22 is provided with a second abutment portion 222. The vibrator assembly 2 also includes at least one gasket 23, which is sleeved on the outer periphery of the connector 22 and located between the first abutment portion 212 and the second abutment portion 222. In actual use, the number of gaskets 23 can be adjusted according to the weight of the camera 200 and other requirements, specifically one, two, three, four, five or more. Furthermore, the thickness of each gasket 23 can also be adjusted according to requirements; this embodiment of the present invention does not impose specific limitations. Thus, by increasing or decreasing the number of gaskets 23 or replacing them with gaskets of different thicknesses, the distance between the first abutment portion 212 and the second abutment portion 222 can be limited, thereby reducing the load F of the compression spring 3.弹 The adjustment is more precise, improving the stability and reliability of the vibration isolation structure 100. Furthermore, the gasket 23 also acts as a buffer and protector, reducing wear on the first contact portion 212 and the second contact portion 222, and extending their service life.

[0076] Specifically, the oscillator 21 also includes an oscillator portion 213 and an extension portion 214 connected to each other. The oscillator portion 213 is disposed inside the cavity 11, and the extension portion 214 extends out of the cavity 11 through a through hole 141. A first abutment portion 212 is disposed at the end of the extension portion 214 away from the oscillator portion 213, and a threaded hole 211 passes through the first abutment portion 212, the oscillator portion 213, and the extension portion 214. The connector 22 also includes a connector portion 223 for connecting to the camera 200, and the connector portion 223 is disposed at the end of the second abutment portion 222 away from the threaded portion 221.

[0077] Of course, in other embodiments, the relative position between the oscillator 21 and the connector 22 can also be adjusted by multiple snap-fit ​​and plug-in structures arranged at intervals along a preset axis; or, oscillator assemblies of different sizes can be selected to adjust the compression amount of the compression spring 3.

[0078] like Figure 4 As shown, the height L of the compression spring 3 in the free state, the compression amount l0 of the compression spring 3 from the free state to the preset position, the wire diameter d of the compression spring 3, the effective number of coils n of the compression spring 3, and the height h0 of the disc spring 4 in the free state satisfy the following:

[0079] L-nd > 2.2h0;

[0080] l0 = L - nd - 2h0.

[0081] Where L-nd is the maximum compression of spring 3.

[0082] Thus, by ensuring that the dimensions of the compression spring 3 and the disc spring 4 satisfy the above formula, it is possible to ensure that the compression spring 3 has sufficient compression space, and the load F of the compression spring 3 at the preset position can be changed by adjusting the compression amount l0 of the compression spring 3. 预 This ensures that the load F of the vibration isolation structure 100 is precisely matched with the weight of the camera 200, and also ensures that the load F of the compression spring 3 is in the preset position. 预 The adjustable range can meet the needs of cameras of different weights, including:

[0083] F 预 =k1l0=k1(L-nd-2h0).

[0084] like Figures 1 to 3As shown, the adjustment component 5 includes a drive component 51 and an output component 52. The drive component 51 is disposed in the housing 1 and can drive the output component 52 to reciprocate along a preset axis. The output component 52 can be connected to the oscillator assembly 2 to drive the oscillator assembly 2 to move synchronously. In this way, the movement stroke of the oscillator assembly 2 along the preset axis can be precisely controlled by the drive component 51 and the output component 52. Moreover, the structure of the adjustment component 5 is simple, which facilitates processing and assembly. Specifically, the adjustment component 5 can be a linear drive structure such as an electric push rod, a pneumatic telescopic rod, a hydraulic telescopic rod, or a linear servo motor. This embodiment of the present invention does not impose specific limitations.

[0085] like Figure 2 As shown, in one embodiment, the output component 52 includes an electromagnet, and the oscillator assembly 2 includes an adsorption part that can be attracted by the electromagnet. In the illustrated embodiment, the first abutment part 212 is the adsorption part, although the adsorption part can also be provided separately. When the camera 200 shakes, the drive component 51 controls the output component 52 to extend toward the first abutment part 212, the electromagnet is energized and attracts the first abutment part 212, at which time the output component 52 can drive the oscillator assembly 2 to move synchronously, so as to move the oscillator assembly 2 from its vibration position to a preset position. After adjustment, the electromagnet is de-energized, and the drive component 51 controls the output component 52 to retract, ensuring that the output component 52 does not affect the normal movement of the oscillator assembly 2. Thus, the structure of the output component 52 is simple, and it can be easily and flexibly connected or disconnected from the oscillator assembly 2. Of course, in other embodiments, the output component 52 and the oscillator assembly 2 can also be connected or separated by clamping, plugging, or other methods, and this utility model embodiment does not impose specific limitations here.

[0086] like Figure 2 As shown, the adjustment component 5 further includes a sensor 53 disposed on the housing 1. The sensor 53 is used to detect the position of the oscillator assembly 2. At the preset position, the sensor 53 records the coordinates of the oscillator assembly 2 and the camera 200. When the camera 200 shakes, the sensor 53 records the coordinates of the oscillator assembly 2 and the camera 200 again, and transmits the two position data to the main controller. The main controller calculates the coordinate difference between the two positions, converts the coordinate difference data into driving force data for the drive component 51, and then drives the output component 52 through the drive component 51 to move the oscillator assembly 2 and the camera 200 to the preset position. Thus, by accurately recording position changes through the sensor 53, combined with the main controller and the drive component 51, it is ensured that the oscillator assembly 2 and the camera 200 can quickly and accurately return to the preset position after shaking, eliminating positional deviation caused by vibration and ensuring the monitoring effect of the camera 200.

[0087] Specifically, the load F when the adjusting component 5 drives the oscillator assembly 2 to move from its vibration position to the preset position is... 驱 The load F at the vibration location of the vibration isolation structure 100 振The gravity G of camera 200 and the corrected load F of vibration isolation structure 100 修 satisfy:

[0088] F 驱 =F 振 -G+F 修 .

[0089] Thus, by limiting the load F of the oscillator assembly 2 driven by the regulating component 5, 驱 Satisfying the above formula allows for convenient and precise control of the drive unit 51 to drive the output unit 52, thereby moving the oscillator assembly 2 and the camera 200 to a preset position. This ensures the accuracy and reliability of the camera 200's reset and improves the position control precision of the vibration isolation structure 100. Among these, the correction load F... 修 Adjustments can be made based on factors such as friction, viscosity, and assembly errors to further ensure control accuracy.

[0090] like Figure 6 As shown, this embodiment of the utility model also provides a camera, including a camera 200 and at least one of the above-mentioned vibration isolation structures 100. Specifically, a camera 200 can be supported by one, two, three, four or more vibration isolation structures 100 as needed, as long as it is ensured that the sum of the loads F of each vibration isolation structure 100 at the preset position is equal to the weight G of the camera 200.

[0091] like Figure 7 The diagram shows the load-displacement curve of the vibration isolation structure 100 according to the illustrated embodiment. The horizontal axis represents the displacement of the oscillator assembly 2 and the camera 200, and the vertical axis represents the load of the vibration isolation structure 100. The low-frequency vibration isolation data is from experiments using the vibration isolation structure 100, while the prototype data is from experiments using other vibration isolation devices. The curve shows that the stiffness of the vibration isolation structure 100 is lower than that of other vibration isolation devices, making it suitable for low-frequency vibration scenarios. It can effectively isolate and buffer low-frequency vibrations, reducing the transmission of vibrations to the camera 200.

[0092] like Figure 8 The diagram shows the low-frequency vibration isolation rate curve of the vibration isolation structure 100 according to the illustrated embodiment. The horizontal axis represents the vibration frequency, and the vertical axis represents the driving amplitude, the amplitude of the oscillator assembly 2, and the vibration isolation rate of the vibration isolation structure 100. The camera response amplitude refers to the amplitude of the oscillator assembly 2 and the camera 200. Specifically, the vibration isolation rate of the vibration isolation structure 100 = (driving amplitude - amplitude of the vibration isolation structure 100) / amplitude of the vibration isolation structure 100. The curve shows that when the driving amplitude is greater than approximately 5.6Hz, the vibration isolation effect of the vibration isolation structure 100 is stable and good, suitable for low-frequency vibration scenarios, and can significantly reduce the vibration amplitude experienced by the camera 200.

[0093] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A vibration isolation structure for a camera (200), characterized in that, include: The shell (1) has a cavity (11), and the inner peripheral wall of the cavity (11) is provided with a limiting part (12). The vibrator assembly (2) is located inside the cavity (11) and can move relative to the housing (1) along a preset axis. One end of the vibrator assembly (2) extends out of the cavity (11) along the preset axis and is used to connect with the camera (200). In the assembled state, the vibrator assembly (2) has a preset position and a vibration position. A compression spring (3) is disposed in the cavity (11) and extends along the preset axis. The two ends of the compression spring (3) abut against the end of the vibrator assembly (2) away from the camera (200) and the inner wall of the cavity (11), respectively. A disc spring (4) is disposed inside the cavity (11) and sleeved outside the compression spring (3). The outer periphery of the disc spring (4) is limited to the limiting part (12). The inner periphery of the disc spring (4) abuts against the end of the vibrator assembly (2) away from the camera (200). In the assembled state, the disc spring (4) has negative stiffness. The adjustment component (5) is disposed in the housing (1) and can drive the oscillator component (2) to move from the vibration position to a preset position.

2. The vibration isolation structure according to claim 1, characterized in that, The disc spring (4) is a slotted disc spring.

3. The vibration isolation structure according to claim 2, characterized in that, The outer diameter D of the disc spring (4) satisfies: D≤50mm; The height h0 of the disc spring (4) in its free state and the thickness t of the disc spring (4) satisfy the following: h0 / t≥3; From the free state to the assembled state, the load F of the disc spring (4) 碟 The displacement f of the disc spring (4) in the direction of the preset axis, the displacement f1 of the inner circumference of the annular portion (41) of the disc spring (4) in the direction of the preset axis, and the displacement f2 of the end of the tongue portion (42) of the disc spring (4) away from the annular portion (41) in the direction of the preset axis satisfy the following: F 碟 =A3f1 3 +A2f1 2 +A1f1+A0≤50N; f2=B3f1 3 +B2f1 2 +B1f1+B0; f = f1 + f2 ≤ 10 mm; Among them, A3, A2, A1, A0, B3, B2, B1, and B0 are all constants.

4. The vibration isolation structure according to claim 1, characterized in that, The vibrator assembly (2) includes a vibrator (21) and a connector (22). The vibrator (21) is disposed in the cavity (11) and has a threaded hole (211) extending along the preset axis. The connector (22) has a threaded portion (221) that can engage with the threaded hole (211) by thread. At least part of the connector (22) extends out of the cavity (11) and is used to connect with the camera (200).

5. The vibration isolation structure according to claim 4, characterized in that, The oscillator (21) has a first abutting part (212) on its outer periphery, and the connector (22) has a second abutting part (222) on its outer periphery. The oscillator assembly (2) also includes at least one gasket (23), which is sleeved on the outer periphery of the connector (22) and located between the first abutting part (212) and the second abutting part (222).

6. The vibration isolation structure according to claim 4 or 5, characterized in that, The height L of the compression spring (3) in its free state, the compression amount l0 of the compression spring (3) from its free state to the preset position, the wire diameter d of the compression spring (3), the effective number of turns n of the compression spring (3), and the height h0 of the disc spring (4) in its free state satisfy the following: L-nd > 2.2h0; l0 = L - nd - 2h0.

7. The vibration isolation structure according to claim 1, characterized in that, The adjustment component (5) includes a drive component (51) and an output component (52). The drive component (51) is disposed on the housing (1) and can drive the output component (52) to reciprocate along the preset axis. The output component (52) can be connected to the oscillator assembly (2) to drive the oscillator assembly (2) to move synchronously.

8. The vibration isolation structure according to claim 7, characterized in that, The output component (52) includes an electromagnet, and the oscillator assembly (2) includes an adsorption part that can be attracted by the electromagnet; and / or, The adjustment assembly (5) also includes a sensor (53) disposed on the housing (1), the sensor (53) being used to detect the position of the oscillator assembly (2).

9. The vibration isolation structure according to claim 7 or 8, characterized in that, The load F of the vibration isolation structure at the preset position is equal to the gravity G of the camera (200); The adjustment component (5) drives the oscillator assembly (2) to move from its vibration position to the load F at the preset position. 驱 The load F of the vibration isolation structure at the vibration location 振 The gravity G of the camera (200) and the corrected load F of the vibration isolation structure 修 satisfy: F 驱 =F 振 -G+F 修 。 10. A camera, characterized in that, It includes a camera (200) and at least one vibration isolation structure as described in any one of claims 1-9.

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