Square flexible supporting mechanism and fast reflecting mirror device

Abstract

The utility model discloses a square flexible supporting mechanism, and belongs to the technical field of fast reflecting mirrors. The square flexible supporting mechanism comprises a bottom connecting base, a top connecting base and a flexible assembly connected between the bottom connecting base and the top connecting base, and the bottom connecting base, the top connecting base and the flexible assembly are integrally formed. The flexible assembly is provided with a body, a plurality of deflection beams are arranged above and below the body, the upper deflection beams are connected with the top connecting seat, and the lower deflection beams are connected with the bottom connecting seat; moreover, the upper deflection beam only has the degree of freedom of deflection around the first axis, the lower deflection beam only has the degree of freedom of deflection around the second axis, and the first axis is orthogonal to the second axis. Due to the integrated structure, the processing time can be shortened, and the manufacturing cost can be saved; according to the structure, the assembly difficulty can be reduced, most assembly stress can be eliminated after assembly, and the stability and the positioning precision of products are obviously helped.

Description

Technical Field

[0001] This utility model relates to the field of quick-reflection mirror technology, and in particular to a square flexible support mechanism and a quick-reflection mirror device. Background Technology

[0002] A fast-reflecting mirror, also known as a rapid-control mirror, is a device that controls the rapid and precise unidirectional or bidirectional deflection of a mirror to achieve high-precision, high-dynamic control between a light source and a target, thus constraining the light beam to point quickly and accurately within a desired range. It plays a crucial role in laser weapons, laser communication, photoelectric stabilization and tracking, image shift compensation, and optical scanning. A fast-reflecting mirror mainly consists of a mirror, a voice coil motor, a mirror support, a mirror angle measurement sensor, a flexible support mechanism, a base, and a main control module. The flexible support mechanism, as a vital component connecting the base and the mirror, directly affects the support strength and deflection deflection along a specified direction, thereby influencing the mirror's support strength and stability, and consequently, its imaging quality, positioning accuracy, and repeatability.

[0003] Existing flexible support mechanisms mainly fall into two categories: one is a hinge mechanism composed of multiple parts; the other is a complex single-part structure with extremely high precision requirements. Their main disadvantages are as follows:

[0004] The main disadvantages of multi-part components are: 1) Because the mechanism needs to be assembled, the machining accuracy and assembly requirements of the components are very high, which greatly increases the machining cost and time cost and reduces the pass rate of the parts; 2) Assembly errors and assembly stress are unavoidable during assembly, which is not conducive to the repeatability and stability of the mechanism. At the same time, too many parts can increase the difficulty of troubleshooting the product and are not conducive to the later maintenance of the product after mass production.

[0005] The main disadvantages of existing single-part structures are: 1) complex structure, complicated processing steps, high process requirements, and low yield; 2) high processing accuracy, high processing requirements, high processing difficulty, and low yield.

[0006] In view of this, a new technical solution is needed to solve the above-mentioned technical problems. Utility Model Content

[0007] The purpose of this invention is to provide a square flexible support mechanism and a quick-reflecting mirror device. Its integrated structure can reduce processing time and save manufacturing costs. This structure can reduce assembly difficulty and eliminate most of the assembly stress after assembly, which can significantly help the stability and positioning accuracy of the product.

[0008] To achieve the above objectives, the present invention employs the following technical means:

[0009] The first aspect of this application provides a square flexible support mechanism, including a bottom connecting seat, a top connecting seat, and a flexible component connected between the two, wherein the bottom connecting seat, the top connecting seat, and the flexible component are integrally formed;

[0010] The flexible component has a body, and several deflection beams are provided above and below the body. The upper deflection beam is connected to the top connecting seat, and the lower deflection beam is connected to the bottom connecting seat.

[0011] Furthermore, the upper deflection beam has only the degree of freedom to deflect about the first axis, and the lower deflection beam has only the degree of freedom to deflect about the second axis, with the first axis and the second axis being orthogonal.

[0012] As a further improvement, the deflection beam is in the form of a thin sheet.

[0013] As a further improvement, strain gauges are attached to the deflection beam.

[0014] As a further improvement, three upper deflection beams and three lower deflection beams are provided respectively;

[0015] The three deflection beams above are arranged horizontally at intervals along the first axis. The extension direction of one deflection beam intersects the extension directions of the other two deflection beams, and the extension directions of the other two deflection beams are the same.

[0016] The three deflection beams below are arranged horizontally at intervals along the second axis. The extension direction of one of the deflection beams intersects the extension directions of the other two deflection beams, and the extension directions of the other two deflection beams are the same.

[0017] As a further improvement, the inclination angle of all deflection beams relative to the horizontal plane is 45°.

[0018] As a further improvement, among the three deflection beams above, the width of the deflection beam with different extension directions is equal to the sum of the widths of the other two deflection beams.

[0019] Of the three deflection beams below, the width of the deflection beam extending in a different direction is equal to the sum of the widths of the other two deflection beams.

[0020] As a further improvement, the top and bottom of the body are provided with semi-circular grooves, and the extending directions of the two semi-circular grooves are orthogonal.

[0021] The bottom ends of the upper deflection beams are all connected to the inner wall of the top semicircular groove, and the top ends of the lower deflection beams are all connected to the inner wall of the bottom semicircular groove.

[0022] As a further improvement, the bottom connecting seat has two bottom steps on the side facing the body, and a semi-circular groove is provided between the two bottom steps. The semi-circular groove is aligned vertically with the semi-circular groove at the bottom of the body.

[0023] The top connecting seat has two top steps on the side facing the main body, and a semi-circular groove is provided between the two top steps. The semi-circular groove is aligned vertically with the semi-circular groove at the bottom of the main body.

[0024] As a further improvement, the bottom connecting seat, the top connecting seat, and the body are all block-shaped structures.

[0025] The second aspect of this application provides a fast-reflecting mirror device, including a base, a bracket with a reflector, four voice coil motors, and a square flexible support mechanism as described above.

[0026] The bottom connecting seat is fixedly connected to the top of the base, and the top connecting seat is fixedly connected to the bottom of the bracket;

[0027] Four voice coil motors are installed between the base and the bracket. The voice coil motors are used to drive a part of the bracket to move up and down, thereby enabling the entire bracket to deflect around the first axis and the second axis.

[0028] Compared with the prior art, this utility model brings the following technical effects:

[0029] The deflection beam of this invention has degrees of freedom to deflect around a first axis and a second axis, and the two axes are orthogonal. When the entire support structure is installed on the quick-reflection mirror device, it can work with the voice coil motor to realize the function of the quick-reflection mirror. The top connecting seat, bottom connecting seat and flexible component are made into an integrated structure, which can reduce processing time and save manufacturing costs. During installation, it is only necessary to connect the upper and lower connecting seats to the bracket and the base respectively, which can greatly reduce the assembly difficulty. After assembly, most of the assembly stress can be eliminated, which significantly helps the stability and positioning accuracy of the product. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A schematic diagram of the structure of a fast-reflecting mirror device according to this utility model is shown;

[0032] Figure 2 This invention provides a bottom view of a quick-reflection mirror device.

[0033] Figure 3 This invention provides a top view of a quick-reflection mirror device.

[0034] Figure 4 A perspective view of a square flexible support mechanism according to the present invention is shown;

[0035] Figure 5 A perspective view of a square flexible support mechanism of the present invention from a second angle is shown;

[0036] Figure 6 This image shows a three-dimensional view of a square flexible support mechanism according to the present invention from a third angle.

[0037] Figure 7 A perspective view of a square flexible support mechanism of the present invention is shown from the fourth angle;

[0038] Figure 8 The diagram shows a perspective view of a square flexible support mechanism of the present invention from the fifth angle.

[0039] Explanation of key component symbols:

[0040] Quick-reflection mirror device-100; base-10; boss-11; bracket-20; reflector-21; voice coil motor-30; main control module-40; square flexible support mechanism-90; bottom connecting seat-91; top connecting seat-92; body-93; upper deflection beam-94; lower deflection beam-95; bottom step-97; top step-98; strain gauge-99. Detailed Implementation

[0041] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0043] Example

[0044] Please see Figure 1-3This embodiment discloses a fast-reflecting mirror device 100, which includes a base 10, a bracket 20 with a reflector 21, four voice coil motors 30, a square flexible support mechanism 90, and a main control module 40. The main control module 40 includes a power supply, control circuitry, etc., and is used to connect the four voice coil motors 30 and control them to perform corresponding actions according to a certain program. The structure and function of the main control module 40 are all prior art and will not be described in detail in this embodiment.

[0045] The base 10 is the mounting base for the fast-reflecting mirror device 100 to be connected to the external device. The reflector 21 is fixedly mounted on the bracket 20 and moves with it. In this embodiment, the bracket 20 is square.

[0046] Specifically, four voice coil motors 30 are arrayed between the base 10 and the support 20, with each motor corresponding to one of the four corners of the support 20. Notably, each voice coil motor 30 has a fixed part and a movable part. This movable part can move back and forth within a certain range after the motor is energized. The fixed and movable parts of the voice coil motor 30 are respectively connected to the support 20 and the base 10, allowing each motor to drive a portion of the lifting and lowering motion of the support 20, thereby achieving a small-amplitude deflection motion of the entire support 20. In this embodiment, the four voice coil motors 30 are used in pairs to control the deflection motion of the support 20. The structure and function of the voice coil motors 30 are common knowledge in the art and will not be described further in this embodiment.

[0047] Please see Figure 4-8 The square flexible support mechanism 90 includes a bottom connecting seat 91, a top connecting seat 92, and a flexible component connecting the two. The bottom connecting seat 91, the top connecting seat 92, and the flexible component are integrally formed. Specifically, in this embodiment, the bottom connecting seat 91, the top connecting seat 92, and the body are all block-shaped structures. This geometric structure component also simplifies the assembly work of the present invention to a certain extent, reducing assembly difficulty and improving assembly efficiency. The square flexible support mechanism 90 is connected between the base 10 and the bracket 20 to limit the deflection movement of the bracket 20. Specifically, a boss 11 is provided at the center of the end face of the base 10 facing the bracket 20. The bottom connecting seat 91 of the support mechanism is fixedly connected to the top of the boss 11, and the top connecting seat 92 of the support mechanism is fixedly connected to the bottom of the bracket 20.

[0048] In this embodiment, the flexible component has a body 93, and several deflection beams are provided above and below the body 93. The upper deflection beam 94 is connected to the top connecting seat 92, and the lower deflection beam 95 is connected to the bottom connecting seat 91. Specifically, there are three upper deflection beams 94 and three lower deflection beams 95.

[0049] by Figure 4The displayed coordinates are for reference. The upper deflection beam 94 has only a degree of freedom to deflect around the Y-axis, and the lower deflection beam 95 has only a degree of freedom to deflect around the X-axis. This is achieved by configuring all deflection beams as long, thin strips. Deflection beams with this structure are easily bent and deformed around an axis perpendicular to the length of the strip under a small force, but are difficult to bend and deform in other directions. In this embodiment, the three upper deflection beams are arranged horizontally at intervals along the Y-axis, further enhancing the aforementioned deformation characteristics, so that the upper deflection beam 94 has only a degree of freedom to deflect around the Y-axis. Similarly, the three lower deflection beams are arranged horizontally at intervals along the X-axis, also enhancing the aforementioned deformation characteristics, so that the lower deflection beam 95 has only a degree of freedom to deflect around the X-axis. After the square flexible support mechanism 90 is installed, the movement of the bracket 20 will be limited to deflection around the X-axis and Y-axis.

[0050] More specifically, whether it is the upper deflection beam 94 or the lower deflection beam 95, the extension direction of one of the deflection beams is set to intersect with the extension directions of the other two deflection beams, and the extension directions of the other two deflection beams are the same. This arrangement can make the structure more stable.

[0051] Even better, the entire deflection beam has an inclination angle of 45° relative to the horizontal plane, which makes the structure of the flexible assembly simpler and easier to manufacture.

[0052] More preferably, among the three upper deflection beams 94, the width of the deflection beams extending in different directions is equal to the sum of the widths of the other two deflection beams; among the three lower deflection beams 95, the width of the deflection beams extending in different directions is equal to the sum of the widths of the other two deflection beams—this arrangement ensures that the resistance experienced by the upper deflection beams 94 when deflecting in the positive and negative directions about the Y-axis is symmetrical, and that the resistance experienced by the lower deflection beams 95 when deflecting in the positive and negative directions about the X-axis is symmetrical.

[0053] As a further improvement, the top and bottom of the main body 93 are provided with semi-circular grooves (not shown in the figure), and the two semi-circular grooves extend in orthogonal directions, that is, the top semi-circular groove extends along the Y-axis, and the bottom semi-circular groove extends along the X-axis. The bottom end of the upper deflection beam 94 is connected to the inner wall of the top semi-circular groove, and the top end of the lower deflection beam 95 is connected to the inner wall of the bottom semi-circular groove.

[0054] Correspondingly, the bottom connecting seat 91 has two bottom steps 97 on the side facing the body 93, and a semi-circular groove (not shown in the figure) is provided between the two bottom steps 97. The semi-circular groove is aligned vertically with the semi-circular groove at the bottom of the body 93. The top connecting seat 92 has two top steps 98 on the side facing the body 93, and a semi-circular groove (not shown in the figure) is provided between the two top steps 98. The semi-circular groove is aligned vertically with the semi-circular groove at the bottom of the body 93.

[0055] At this point, the three upper deflection beams 94 move within the circular through-slots extending along the Y-axis, and the three lower deflection beams 95 move within the circular through-slots extending along the X-axis. Furthermore, when the support 20 deflects excessively along the Y-axis, the upper end face of the body 93 interferes with the bottom step 97 of the support 20, thereby limiting the maximum range of deflection of the support 20 along the Y-axis; when the support 20 deflects excessively along the X-axis, the top step 98 of the bottom connecting seat 91 interferes with the lower section of the body 93, thereby limiting the maximum range of deflection of the support 20 along the X-axis.

[0056] It should be noted that when the bracket 20 deflects along the Y-axis, the body 93 and the bottom connecting seat 91 are equivalent to a stationary whole; when the bracket 20 deflects along the X-axis, the body 93 and the top connecting seat 92 are equivalent to a stationary whole.

[0057] Preferably, strain gauges 99 are attached to all deflection beams to measure the deformation of each beam. These strain gauges 99 are sensors attached to the surface of an object to measure its mechanical deformation; their structure and function are common knowledge in the field and will not be described further here.

[0058] In summary, the square flexible support mechanism 90 of this utility model is integrally formed, which can reduce processing time and save manufacturing costs. The upper deflection beam 94 and the lower deflection beam 95 have degrees of freedom to deflect around the Y-axis and X-axis, respectively. This means that when the support 20 deflects along the Y-axis, the body 93 and the bottom connecting seat 91 are essentially a stationary unit. When the support 20 deflects along the X-axis, the bottom connecting seat 91 is stationary, and the body 93 and the top connecting seat 92 form a unit that deflects around the X-axis, thus effectively realizing the function of the quick-reflecting mirror. At the same time, when assembling the quick-reflecting mirror device 100, it is only necessary to connect the upper and lower connecting seats to the support 20 and the base 10, respectively, which can greatly reduce the assembly difficulty. After assembly, most of the assembly stress can be eliminated, which significantly helps the stability and positioning accuracy of the product.

[0059] Other notes

[0060] In the above embodiments, there are three upper deflection beams 94 and three lower deflection beams 95. In other embodiments, there may be two, four, or five different beams, which can be flexibly selected according to the product size.

[0061] The square flexible support mechanism 90 of this application can be made of metal or plastic materials, and the processing technology can be machine tool processing or 3D printing.

[0062] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom still fall within the protection scope of this invention.

Claims

1. A square flexible support mechanism, characterized in that: It includes a bottom connecting seat, a top connecting seat, and a flexible component connecting the two, wherein the bottom connecting seat, the top connecting seat, and the flexible component are integrally formed; The flexible component has a body, and several deflection beams are provided above and below the body. The upper deflection beam is connected to the top connecting seat, and the lower deflection beam is connected to the bottom connecting seat. Furthermore, the upper deflection beam has only the degree of freedom to deflect about the first axis, and the lower deflection beam has only the degree of freedom to deflect about the second axis, with the first axis and the second axis being orthogonal.

2. The square flexible support mechanism as described in claim 1, characterized in that, The deflection beam is in the form of a thin sheet.

3. The square flexible support mechanism as described in claim 1, characterized in that, Strain gauges are attached to the deflection beam.

4. The square flexible support mechanism as described in any one of claims 2-3, characterized in that, There are three upper deflection beams and three lower deflection beams respectively; The three deflection beams above are arranged horizontally at intervals along the first axis. The extension direction of one deflection beam intersects the extension directions of the other two deflection beams, and the extension directions of the other two deflection beams are the same. The three deflection beams below are arranged horizontally at intervals along the second axis. The extension direction of one of the deflection beams intersects the extension directions of the other two deflection beams, and the extension directions of the other two deflection beams are the same.

5. The square flexible support mechanism as described in claim 4, characterized in that, The angle of inclination of all deflection beams relative to the horizontal plane is 45°.

6. The square flexible support mechanism as described in claim 4, characterized in that, Of the three deflection beams above, the width of the deflection beam extending in different directions is equal to the sum of the widths of the other two deflection beams; Of the three deflection beams below, the width of the deflection beam extending in a different direction is equal to the sum of the widths of the other two deflection beams.

7. The square flexible support mechanism as described in claim 1, characterized in that, The top and bottom of the body are provided with semi-circular grooves, and the extending directions of the two semi-circular grooves are orthogonal. The bottom ends of the upper deflection beams are all connected to the inner wall of the top semicircular groove, and the top ends of the lower deflection beams are all connected to the inner wall of the bottom semicircular groove.

8. The square flexible support mechanism as described in claim 7, characterized in that, The bottom connecting seat has two bottom steps on the side facing the body, and a semi-circular groove is provided between the two bottom steps. The semi-circular groove is aligned vertically with the semi-circular groove on the bottom of the body. The top connecting seat has two top steps on the side facing the main body, and a semi-circular groove is provided between the two top steps. The semi-circular groove is aligned vertically with the semi-circular groove at the bottom of the main body.

9. The square flexible support mechanism as described in claim 1, characterized in that, The bottom connecting seat, top connecting seat, and body are all block-shaped structures.

10. A fast-reflecting mirror device, characterized in that, It includes a base, a bracket with a reflector, four voice coil motors, and a square flexible support mechanism as described in any one of claims 1-9; The bottom connecting seat is fixedly connected to the top of the base, and the top connecting seat is fixedly connected to the bottom of the bracket; Four voice coil motors are installed between the base and the bracket. The voice coil motors are used to drive a part of the bracket to move up and down, thereby enabling the entire bracket to deflect around the first axis and the second axis.

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