CN214499869U - Optical module spring damper, damping device and damping system - Google Patents

Abstract

The utility model discloses an optical module spring shock absorber, a shock absorber and a shock absorbing system based on the optical module spring shock absorber, which relate to the technical field of quantum communication equipment, wherein the optical module spring shock absorber comprises an upper cover, a lower cover, a tower-shaped spring and a limiting body; the tower-shaped spring and the limiting body are fixed between the upper cover and the lower cover; the limiting body comprises a limiting block, a central shaft lever and a limiting sheet; the limiting sheet moves up and down in the limiting block; the limiting block is fixed under the center of the upper cover, a first through hole is formed in the center of the bottom of the limiting block, one end of the central shaft rod penetrates through the first through hole to be fixedly connected with the limiting piece, and the other end of the central shaft rod is fixed in the center of the lower cover; the height of the central shaft lever is less than or equal to that of the limiting block. The vibration damping device can effectively reduce vibration of the optical module and improve working stability of the optical module.

Description

Optical module spring damper, damping device and damping system

Technical Field

The application relates to the technical field of quantum communication equipment, in particular to an optical module spring damper, a damping device and a damping system.

Background

Quantum key distribution, which utilizes quantum mechanical characteristics to ensure the security of communication, enables two communication parties to generate and share a random and secure key to encrypt and decrypt messages. The quantum key distribution generally includes a transmitting end and a receiving end, and correspondingly, the quantum key distribution device mainly includes a transmitter and a receiver.

The quantum key transmitter includes a plurality of modules, such as a light source module, a quantum coding module, a control circuit module, and the like, wherein the quantum coding module may be further subdivided into an optical module, such as a basic light path module, an Intensity Modulation (IM) module, and an interferometer module, if the optical module has vibration, the vibration may affect the accuracy, quality, stability, and other indexes of the optical device during operation, and in severe cases, may even directly cause the optical device to fail to operate normally, and therefore, it is necessary to perform vibration reduction processing on the optical module.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a technical problem that will solve provides an optical module spring damper and vibration damper and damping system based on this optical module spring damper, and vibration damper wherein can effectively reduce optical module's vibration, improves optical module job stabilization nature.

The embodiment of the utility model provides a concrete technical scheme is:

an optical module spring shock absorber comprises an upper cover, a lower cover, a tower-shaped spring and a limiting body; the tower-shaped spring and the limiting body are fixed between the upper cover and the lower cover; the limiting body comprises a limiting block, a central shaft lever and a limiting sheet; the limiting sheet moves up and down in the limiting block; the limiting block is fixed under the center of the upper cover, a first through hole is formed in the center of the bottom of the limiting block, one end of the central shaft rod penetrates through the first through hole to be fixedly connected with the limiting piece, and the other end of the central shaft rod is fixed in the center of the lower cover; the height of the central shaft lever is less than or equal to that of the limiting block.

Preferably, a second through hole is formed in the center of the upper cover, and the limiting block is located right below the second through hole.

Preferably, the number of the tower springs is three, the three same tower springs are located at three vertices of an equilateral triangle with a central shaft as a center in the horizontal direction, the top ends of the tower springs are fixed to the upper cover, and the bottom ends of the tower springs are fixed to the lower cover.

Preferably, the limiting block is of a hollow structure with an opening at the top, the limiting piece is located inside the limiting block, and the horizontal cross-sectional area of the first through hole at the bottom of the limiting block is smaller than the surface area of the limiting piece.

Preferably, the minimum distance between the upper cover and the lower cover is greater than or equal to the height value of the limiting block, and the maximum distance between the upper cover and the lower cover is less than or equal to the sum of the height values of the central shaft rod and the limiting block.

A vibration damping device comprising: an optical module spring damper as claimed in any preceding claim.

Preferably, the vibration damping device further comprises a vibration damping device base, a vibration damping device upper cover and vibration damping latex; the vibration damper base and the vibration damper upper cover form a box body with an opening on the side surface, and the optical module spring vibration damper and the vibration damping latex are arranged in the box body with the opening on the side surface; the vibration damping device comprises two optical module spring vibration dampers, the two optical module spring vibration dampers are symmetrically arranged on two sides of the interior of the box body with the side surface open, and vibration damping latex is arranged between the two optical module spring vibration dampers.

Preferably, the optical module spring damper is disposed on an inner bottom edge of the box body with the open side, and damping latex is disposed on an inner side edge and an inner top edge of the box body with the open side.

A vibration dampening system comprising: the vibration damping device according to any one of the above claims, wherein the number of the vibration damping devices is two, and the two vibration damping devices are horizontally and symmetrically arranged.

Preferably, the damping device has an open side, the open sides of the two damping devices being arranged opposite one another.

According to the scheme, the application provides the optical module spring damper, and the vibration damping device and the vibration damping system based on the optical module spring damper, wherein the vibration damping device has the vibration damping buffering effect of the spring damper and is also provided with vibration damping latex with the damping effect. On the basis of vibration reduction by using a spring vibration absorber, vibration reduction latex is added to play a damping role, particularly when low-frequency vibration is handled, the spring cannot effectively play a vibration reduction role, and particularly when the vibration source frequency of the optical module is close to the natural frequency of the system, the vibration conduction is reduced by adding damping to reduce the vibration conduction during the low-frequency vibration. In addition, the damping value of the damping system can be optimized by adjusting the action area of the damping latex.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims. Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for helping the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. The skilled person in the art can, under the teaching of the present invention, choose various possible shapes and proportional dimensions to implement the invention according to the specific situation.

FIG. 1 is a perspective view of an optical module spring damper according to the present application;

FIG. 2 is a perspective view of an upper cover of the optical module spring damper of the present application;

FIG. 3 is a schematic top view of the optical module spring damper upper cover of the present application;

FIG. 4 is a perspective view of the optical module spring damper lower cover of the present application;

FIG. 5 is a perspective view of the optical module spring damper of the present application without the lower cover portion;

FIG. 6 is a schematic perspective view of a vibration damping device according to the present application;

FIG. 7 is a schematic perspective view of a vibration damper of the present application without a vibration damper base and a vibration damper upper cover;

fig. 8 is a schematic perspective view of a damping system according to the present application.

Detailed Description

The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of explanation only, and should not be construed as limiting the invention in any way. Given the teachings of the present invention, the skilled person can conceive of any possible variants based on the invention, which should all be considered as belonging to the scope of the invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

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

The application provides an optical module spring damper, and a damping device and a damping system based on the optical module spring damper. The utility model discloses a first aspect relates to an optical module spring damper 2, figure 1 is an optical module spring damper spatial structure schematic diagram of this application, figure 2 is the optical module spring damper upper cover spatial structure schematic diagram of this application, figure 3 is the optical module spring damper upper cover overlook structural schematic diagram of this application, figure 4 is the optical module spring damper lower cover spatial structure schematic diagram of this application, figure 5 is the optical module spring damper spatial structure schematic diagram of this application that does not contain lower cover portion. Referring to fig. 1-5, an optical module spring damper 2 may include: upper cover 21, lower cover 22, tower spring 23, spacing body. The tower spring 23 and the limiting body are fixed between the upper cover 21 and the lower cover 22, wherein the tower spring 23 is also called a pagoda spring, which has the advantages of small volume, large load, variable stiffness and the like, and the limiting body is used for limiting the movement of the upper cover 21 relative to the lower cover 22. The limiting body can comprise a limiting block 241, a central shaft rod 242 and a limiting piece 243, the limiting piece 243 can move up and down in the limiting block 241, the limiting block 241 is fixed under the center of the upper cover 21, the center of the bottom of the limiting block 241 is provided with a first through hole, one end of the central shaft rod 242 penetrates through the first through hole and is fixedly connected with the limiting piece 243, and the other end of the central shaft rod 242 is fixed at the center of the lower cover 22; the height of the central shaft rod 242 is less than or equal to the height of the limiting block 241, so that the central shaft rod 242 cannot penetrate through the limiting block 241 from the upper end after penetrating through the first through hole, and the limiting sheet 243 cannot penetrate through the limiting block 241 and can only move up and down in the limiting block 241.

With the above embodiment, when the optical module 6 is placed on the optical module spring damper 2, the distance between the upper cover 21 and the lower cover 22 changes following the up-and-down movement of the stopper piece 243 in the stopper 241, and the tower spring 23 extends and contracts between the upper cover 21 and the lower cover 22; the minimum distance between the upper cover 21 and the lower cover 22 is greater than or equal to the height value of the limiting block 241, and the maximum distance between the upper cover 21 and the lower cover 22 is less than or equal to the sum of the height values of the central shaft 242 and the limiting block 241.

The upper cover 21 may include an upper cover plate 211, an annular portion 212, and a first screw hole 214, the upper cover plate 211 and the annular portion 212 are integrally formed, the upper cover 21 is used to carry the optical module 6, that is, the optical module 6 is placed on the upper cover plate 211, and the horizontal cross-sectional shape of the upper cover plate 211 may be a circle, a square, an ellipse, or other shapes; the lower cover 22 may include a lower cover plate 221 and a second screw hole 223, and the horizontal cross-sectional shape of the lower cover plate 221 may be a circle, a square, an ellipse, or another shape. In a possible embodiment, referring to fig. 1 to 5, a horizontal cross section of the upper cover plate 211 is square, an excircle of the horizontal cross section of the annular portion 212 is inscribed in the horizontal cross section of the upper cover plate 211, the number of the first screw holes 214 is 4, the first screw holes 214 are respectively distributed at four vertices of the upper cover plate 211, and the first screw holes 214 are used for screw fixing connection between the optical module 6 and the optical module spring damper 2; the horizontal section of the lower cover plate 221 is circular, the second screw holes 223 are located in the lower cover plate 221, and the number of the second screw holes 223 is three, for fixing the optical module spring damper 2 by screws.

The limiting block 241 is fixed right below the center of the upper cover 21, and the fixing mode between the limiting block 241 and the upper cover 21 includes, but is not limited to, integral connection, bonding, welding, bolt connection and the like; one end of the central shaft 242 passes through the first through hole and is fixedly connected with the limiting piece 243, and the fixing manner between the central shaft 242 and the limiting piece 243 includes, but is not limited to, screw connection, bonding, welding and the like; the other end of the center shaft 242 is fixed to the center of the lower cover 22, and the fixing method of the center shaft 242 to the center of the lower cover 22 includes, but is not limited to, integral connection, adhesion, welding, and the like. In a feasible implementation manner, referring to fig. 2 to 5, a second through hole is formed in the center of the upper cover 21, the limiting block 241 is located right below the second through hole, the horizontal cross-sectional area of the hollow inside of the limiting block 241 is greater than or equal to the horizontal cross-sectional area of the second through hole, the limiting block 241 and the upper cover 21 are integrally formed, the central shaft rod 242 and the lower cover 22 are integrally formed, a threaded hole is formed in one end of the central shaft rod 242 fixedly connected with the limiting piece 243, a screw hole is formed in the center of the limiting piece 243, and the central shaft rod 242 and the limiting piece 243 are fixedly connected through a screw.

The shape of the limiting block 241 may be a cylinder, a cuboid, a cube, or other shapes, and the horizontal cross-section of the limiting piece 243 may be a circle, a square, an ellipse, or other shapes, so that in order to facilitate the up-and-down movement of the limiting piece 243 in the limiting block 241, the limiting piece 243 and the limiting block 241 are configured to be matched with each other, for example, as shown in fig. 2, 3, and 5, when the limiting block 241 is configured as a cylinder, the horizontal cross-section of the limiting piece 243 may be configured as a circle to facilitate the limiting movement between each other. In a feasible implementation manner, referring to fig. 2 to 5, the limiting block 241 is configured to be a hollow cylindrical structure with an open top, the horizontal cross-sectional shape of the limiting sheet 243 is a circular shape, the limiting sheet 243 is located inside the limiting block 241, the horizontal cross-sectional area of the hollow inside of the limiting block 241 is greater than or equal to the horizontal surface area of the limiting sheet 243, and in addition, in order to prevent the limiting sheet 243 from being separated from the limiting block 241 from the lower end of the limiting block 241, the horizontal cross-sectional area of the first through hole at the bottom of the limiting block 241 is smaller than the surface area of the limiting sheet 243.

The number of the tower springs 23 is three, all the tower springs 23 are located between the upper cover 21 and the lower cover 22, the three same tower springs 23 are located at three vertices of an equilateral triangle centering on the central shaft 242 in the horizontal direction, that is, the three same tower springs 23 are located at three vertices of an inscribed equilateral triangle centering on the center shaft 242 in the horizontal direction, the top ends of the three tower springs 23 are fixed to the upper cover 21, the bottom ends of the three tower springs 23 are fixed to the lower cover 22, and the fixing modes between the tower springs 23 and the upper cover 21 and the lower cover 22 include, but are not limited to, screw connection, adhesion, welding and the like. In a possible embodiment, referring to fig. 1 to 5, the upper cover plate 211 further has three third screw holes 213 formed thereon for fixing the three tower springs 23 to the upper cover 21 by screws, and the three third screw holes 213 are located at three vertices of an equilateral triangle with the center of the upper cover 21 as the center in the horizontal direction; the lower cover plate 221 is further provided with three fourth screw holes 222 for fixing the three tower springs 23 to the lower cover 22 by screws, and the three fourth screw holes 222 are located at three vertices of an equilateral triangle centered on the central shaft 242 in the horizontal direction.

A second aspect of the present invention relates to a vibration damping device 1, which may include the optical module spring damper 2 according to any one of the above embodiments. Fig. 6 is a schematic perspective view of a vibration damping device according to the present application, fig. 7 is a schematic perspective view of a vibration damping device without a vibration damping device base and a vibration damping device upper cover according to the present application, and referring to fig. 6 and 7, the vibration damping device 1 may further include a vibration damping device base 4, a vibration damping device upper cover 5, and vibration damping latex 3. The vibration damper base 4 and the vibration damper upper cover 5 are fixedly connected to form a box body with an open side, and the optical module spring vibration damper 2 and the vibration damping latex 3 are arranged in the box body with the open side. The vibration damping device 1 comprises two optical module spring vibration dampers 2, the two optical module spring vibration dampers 2 are symmetrically positioned on two sides of the inner part of the box body with the side surface open, vibration damping latex 3 is arranged between the two optical module spring vibration dampers 2, and the height of the vibration damping latex 3 between the two optical module spring vibration dampers 2 is equal to or lower than the height of the optical module spring vibration damper 2 in a no-load state, namely a natural state. Preferably, referring to fig. 6 and 7, the optical module spring damper 2 is disposed at the inner bottom edge of the side open box body, and the inner side edge and the inner top edge of the side open box body are both provided with damping latex 3 to exert a damping effect. When the thickness values of the vibration-damping latex 3 at the inner side edge and the inner top edge of the box body with the open side faces are selected, the box body needs to be matched with the optical module 6, the vibration-damping device base 4 and the vibration-damping device upper cover 5 for selection, so that the optical module 6 can be conveniently accommodated and taken and placed. The vibration damping latex 3 may be fixed to the vibration damping device base 4 or the vibration damping device upper cover 5 by an adhesive method.

A third aspect of the present invention relates to a vibration damping system, which may include the vibration damping device 1 according to any of the above embodiments. Fig. 8 is a schematic perspective view of a vibration damping system according to the present application, and referring to fig. 8, the number of the vibration damping devices 1 is two, two identical vibration damping devices 1 are horizontally and symmetrically arranged, and the optical module 6 is placed between the two identical vibration damping devices 1 which are horizontally and symmetrically arranged. Specifically, the vibration damping device 1 has an open side, the open sides of two identical vibration damping devices 1 are arranged opposite to each other, two ends of the optical module 6 are respectively inserted into the two opposite vibration damping devices 1 through the open sides of the two identical vibration damping devices 1, and then vibration damping of the optical module 6 is realized through mutual matching between the two identical vibration damping devices 1, so as to maintain the working stability of the optical module 6.

The present application has been described in detail with reference to specific embodiments and illustrative examples, but the description is not intended to limit the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications or improvements may be made to the presently disclosed embodiments and implementations thereof without departing from the spirit and scope of the present disclosure, and these fall within the scope of the present disclosure. The protection scope of this application is subject to the appended claims.

Claims (10)

1. An optical module spring shock absorber is characterized by comprising an upper cover, a lower cover, a tower-shaped spring and a limiting body;

the tower-shaped spring and the limiting body are fixed between the upper cover and the lower cover;

the limiting body comprises a limiting block, a central shaft lever and a limiting sheet;

the limiting sheet moves up and down in the limiting block;

the limiting block is fixed under the center of the upper cover, a first through hole is formed in the center of the bottom of the limiting block, one end of the central shaft rod penetrates through the first through hole to be fixedly connected with the limiting piece, and the other end of the central shaft rod is fixed in the center of the lower cover;

the height of the central shaft lever is less than or equal to that of the limiting block.

2. The optical module spring damper of claim 1, wherein a second through hole is formed in the center of the upper cover, and the stopper is located right below the second through hole.

3. The optical module spring damper of claim 1, wherein the number of the tower springs is three, three identical tower springs are located at three vertices of an equilateral triangle centered on a central shaft in a horizontal direction, a top end of the tower springs is fixed to the upper cover, and a bottom end of the tower springs is fixed to the lower cover.

4. The optical module spring damper according to claim 1, wherein the stopper is a hollow structure with an open top, the stopper piece is located inside the stopper, and the horizontal cross-sectional area of the first through hole at the bottom of the stopper is smaller than the surface area of the stopper piece.

5. The optical module spring damper of claim 1, wherein the minimum distance between the upper cover and the lower cover is greater than or equal to the height value of the stopper, and the maximum distance between the upper cover and the lower cover is less than or equal to the sum of the height values of the central shaft and the stopper.

6. A vibration damping device comprising an optical module spring damper according to any one of claims 1 to 5.

7. The vibration damping device according to claim 6, further comprising a vibration damping device base, a vibration damping device upper cover, vibration damping latex;

the vibration damper base and the vibration damper upper cover form a box body with an opening on the side surface, and the optical module spring vibration damper and the vibration damping latex are arranged in the box body with the opening on the side surface;

the vibration damping device comprises two optical module spring vibration dampers, the two optical module spring vibration dampers are symmetrically arranged on two sides of the interior of the box body with the side surface open, and vibration damping latex is arranged between the two optical module spring vibration dampers.

8. The vibration dampener according to claim 7, wherein the optical module spring dampener is disposed on an inside bottom edge of the open-sided box body, and wherein the inside side edge and the inside top edge of the open-sided box body are provided with dampening latex.

9. A vibration damping system comprising a vibration damping device according to any one of claims 6 to 8, wherein the number of the vibration damping devices is two, and the two vibration damping devices are horizontally symmetrically arranged.

10. The damping system according to claim 9, wherein the damping device has an open side, the open sides of the two damping devices being oppositely disposed.

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