Position deviation compensation mechanism

Abstract

The present invention provides a position deviation compensation mechanism, which enables a swing mirror whose swing center axis is not in the direction of the thickness center of the swing mirror to compensate for the deviation of two dimensions during the swing process, so as to ensure the accuracy of the distance between the structures and greatly improve the use efficiency of the swing mirror. The parallelogram linkage structure includes an upper link and a lower link arranged in parallel, and the parallelogram linkage structure also includes a pair of side rods arranged in parallel, the side rods are specifically a first link and a second link, and the revolving pairs between the four links of the parallelogram linkage mechanism have a damping structure, the outer side of the first link is fixedly connected to the inner surface of the swing mirror, and the outer lower part of the second link is provided with a swing mirror rotation point, and the swing mirror rotation point is respectively pivoted to the corresponding ends of the first driving rod and the second driving rod, the length of the first driving rod is longer than the length of the second driving rod, and a slider is provided on the second connecting rod, and the slider is arranged to move along the length direction of the second connecting rod.

Description

Technical Field

[0001] The invention relates to the technical field of radio frequency coaxial cables, and in particular to a position deviation compensation mechanism. Background Art

[0002] In the scanning imaging system, the accuracy of the distance between the swing mirror and the optical components during its swing directly determines the imaging quality. When designing the optical system, the distance between the swing mirror and other components is assumed to be the center of the thickness of the swing mirror. However, in actual engineering design, a shaft bracket is installed on the swing mirror, and the rotation center of the swing mirror is in the direction of the mounting shaft hole of the shaft bracket, so that the rotation center of the swing mirror is at a certain distance from the theoretical center axis of the swing mirror, such as Figure 1 As shown by the solid line, when the oscillating mirror swings left and right, there is a position deviation of two dimensions from the ideal swinging position of the oscillating mirror. This will cause a deviation in the position distance between the oscillating mirror and the components, and will also greatly reduce the use efficiency of the oscillating mirror.

[0003] Generally, if the axis of the rotating shaft is to pass through the center of the thickness of the oscillating mirror, the oscillating mirror is generally thickened so that the axis passes through the center of the thickness of the oscillating mirror. This greatly increases the process of producing the oscillating mirror and also increases the processing cost of the oscillating mirror. Summary of the invention

[0004] In response to the above problems, the present invention provides a position deviation compensation mechanism, which enables a swing mirror whose swing center axis is not in the direction of the thickness center of the swing mirror to compensate for deviations in two dimensions during the swinging process, thereby ensuring the accuracy of the distance between structures and greatly improving the use efficiency of the swing mirror.

[0005] A position deviation compensation mechanism, characterized in that it includes a swing mirror and a parallelogram linkage mechanism, the parallelogram linkage structure includes an upper link and a lower link arranged in parallel, the parallelogram linkage structure also includes a pair of side rods arranged in parallel, the side rods are specifically a first link and a second link, the rotating pairs between the four links of the parallelogram linkage mechanism have a damping structure, the outer side of the first link is fixedly connected to the inner surface of the swing mirror, the outer lower part of the second link is provided with a swing mirror rotation point, the swing mirror rotation point is respectively pivoted to the corresponding end of the first driving rod and the second driving rod, the length of the first driving rod is longer than the length of the second driving rod, and the second connecting rod is provided with a sliding The cam is an angular movement ...

[0006] It is further characterized by:

[0007] The rotation stopper includes a first upper rotation stopper and a second lower rotation stopper, and the positions of the first upper rotation stopper and the second lower rotation stopper are only used to block and limit the rotation range of the second driving rod and do not interfere with the first driving rod in a spatial range;

[0008] The four-link stopper includes a first upper link stopper and a second lower link stopper, and the positions of the first upper link stopper and the second lower link stopper are only used to block the position of the upper link or the lower link, and do not interfere with the first link and the second link in a spatial range;

[0009] The first upper connecting rod stopper and the second lower connecting rod stopper are both cylindrical structure stops;

[0010] When the swing mirror is in the rotating state, the upper connecting rod or the lower connecting rod first contacts the first upper connecting rod stopper or the second lower connecting rod stopper, and then the entire swing mirror continues to rotate until the second driving rod contacts the first upper rotation stopper or the second lower rotation stopper, and the swing mirror stops the corresponding rotation.

[0011] Preferably, the parallelogram linkage mechanism comprises an upper link, a lower link, a left link and a right link, the upper link and the lower link are arranged in parallel, the left link is the second link, the right link is the first link, the left link and the right link are arranged in parallel, the outer side of the right link is fixedly connected to the inner surface of the swing mirror, and four-bar fixed-position blocks are respectively provided above and below the upper link, and when the upper link hits the four-bar block at the corresponding position, the entire parallelogram linkage mechanism will be deformed when the overall rotation occurs, a slider is provided on the left link, and the slider is arranged to move along the length direction of the left link, the other end of the first driving rod is pivotally connected to the slider, and the other end of the second driving rod is pivotally connected to a pivot point at a fixed position in the length direction of the left link, and four-bar fixed-position blocks are respectively provided above and below the upper link, and when the upper link hits the four-bar block at the corresponding position, the entire parallelogram linkage mechanism will be deformed when the overall rotation occurs.

[0012] When the rotation center of the oscillating mirror is inconsistent with the theoretical rotation center of the oscillating mirror, when the two rotate at a certain angle, the position of the oscillating mirror will have deviations in two dimensions, the X direction and the Y direction, such as Figure 1 As shown; after adopting the above technical solution, when the first driving rod rotates, because the first driving rod is connected to the slider, the second driving rod actually plays the role of rotation, and the first driving rod has a larger rotation radius than the second driving rod (such as Figure 3 As shown in FIG. 1 , the first driving rod drives the slider to move along the length direction of the second connecting rod, and when the swing mirror swings, the deviation in the X direction will be reduced, such as Figure 4 As shown; the first driving rod rotates until the parallelogram linkage mechanism hits the four-bar linkage block. There is a certain damping between the rotating pairs of the parallelogram linkage mechanism. When it does not hit the block, the shape of the parallelogram linkage mechanism will not change; the first driving rod continues to rotate, causing the parallelogram linkage mechanism to deform until the second driving rod hits the rotating block. In this process, the parallelogram linkage mechanism deforms, causing the swing mirror to reduce the deviation in the X direction and the Y direction. In addition, the deviation in the X direction is reduced by the sliding movement connected by the first driving rod. This structure eliminates the deviation of the swing mirror in the X direction and the Y direction; it enables the swing mirror whose swing center axis is not in the direction of the thickness center of the swing mirror to compensate for the deviation in two dimensions during the swinging process, so that the accuracy of the distance between the structures is guaranteed, and the use efficiency of the swing mirror is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the position deviation relationship diagram between the rotation center of the oscillating mirror and the theoretical central axis of the oscillating mirror;

[0014] Figure 2 It is a schematic diagram of the structure of the present invention;

[0015] Figure 3 It is a schematic diagram of the rotation radius of the first sliding driving rod and the second sliding driving rod of the present invention;

[0016] Figure 4 It is a schematic diagram of reducing the deviation in the X direction when the slider of the present invention drives the first driving rod to slide;

[0017] Figure 5 It is a schematic diagram of the working principle of the present invention;

[0018] The names corresponding to the serial numbers in the figure are as follows:

[0019] Swing mirror 1, parallelogram linkage 2, upper link 21, lower link 22, first link 23, second link 24, swing mirror rotation point 3, first drive rod 4, second drive rod 5, slider 6, pivot point 7, first upper rotation stopper 8, second lower rotation stopper 9, first upper link stopper 10, second lower link stopper 11. DETAILED DESCRIPTION

[0020] A position deviation compensation mechanism, see Figure 2 :It includes a swing mirror 1 and a parallelogram linkage mechanism 2. The parallelogram linkage structure includes an upper link 21 and a lower link 22 arranged in parallel. The parallelogram linkage structure 2 also includes a pair of side rods arranged in parallel. The side rods are specifically a first link 23 and a second link 24. The revolving pairs between the four links of the parallelogram linkage mechanism 2 have a damping structure. The outer side of the first link 23 is fixedly connected to the inner surface of the swing mirror 1. The outer lower part of the second link 24 is provided with a swing mirror rotation point 3. The swing mirror rotation point 3 is respectively pivotally connected to the corresponding ends of the first driving rod 4 and the second driving rod 5. The length of the first driving rod 4 is longer than that of the second driving rod 5. The second connecting rod 24 is provided with a slider 6. The slider 6 It is arranged to move along the length direction of the second connecting rod 24, the other end of the first driving rod 4 is pivotally connected to the slider 6, the other end of the second driving rod 5 is pivotally connected to a pivot point 7 at a fixed position in the length direction of the second connecting rod 24, the slider 6 is arranged in the upper area of ​​the pivot point 7, and the upper and lower spatial areas of the second driving rod 5 are respectively provided with fixed rotation blocks, the two rotation blocks are used to limit the rotation range of the second driving rod 5, and the upper and lower positions of the upper connecting rod 21 or the lower connecting rod 22 are respectively provided with fixed four-link blocks, and when the upper connecting rod 21 or the lower connecting rod 22 hits the four-link block at the corresponding position, the entire parallelogram linkage mechanism 2 will be deformed when it rotates as a whole.

[0021] The rotation stopper includes a first upper rotation stopper 8 and a second lower rotation stopper 9. The positions of the first upper rotation stopper 8 and the second lower rotation stopper 9 are only used to block and limit the rotation range of the second driving rod 5 and do not interfere with the first driving rod 4 in the spatial range;

[0022] The four-link stopper includes a first upper link stopper 10 and a second lower link stopper 11. The first upper link stopper 10 and the second lower link stopper 11 are only used to block the position of the upper link or the lower link, and do not interfere with the first link 23 and the second link 24 in the space range.

[0023] The first upper connecting rod stopper 10 and the second lower connecting rod stopper 11 are both cylindrical structure stops;

[0024] When the oscillating mirror 1 is in the rotating state, the upper connecting rod 21 or the lower connecting rod 22 first contacts the first upper connecting rod stopper 10 or the second lower connecting rod stopper 11, and then the entire oscillating mirror continues to rotate until the second driving rod 5 contacts the first upper rotation stopper 8 or the second lower rotation stopper 9, and the oscillating mirror 1 stops the corresponding rotation.

[0025] For specific implementation, see Figure 2-Figure 5 : The parallelogram linkage mechanism includes an upper link 21, a lower link 22, a left link, and a right link. The upper link 21 and the lower link 22 are arranged in parallel, the left link is the second link 24, and the right link is the first link 23. The left link and the right link are arranged in parallel, and the outer side of the right link is fixedly connected to the inner surface of the swing mirror 1. Four-bar stoppers with fixed positions are respectively arranged above and below the upper link. After the upper link 21 hits the four-bar stoppers at the corresponding positions, the entire parallelogram linkage mechanism 2 will deform when the overall rotation occurs. A slider 6 is provided on the left link, and the slider 6 is arranged to move along the length direction of the left link. The other end of the first drive rod 4 is pivotally connected to the slider 6, and the other end of the second drive rod 5 is pivotally connected to a pivot point 7 at a fixed position in the length direction of the left link.

[0026] When the rotation center of the oscillating mirror is inconsistent with the theoretical rotation center of the oscillating mirror, when the two rotate at a certain angle, the position of the oscillating mirror will have deviations in two dimensions, the X direction and the Y direction, such as Figure 1 As shown; the working principle of this structure is as follows: when the oscillating mirror swings upward or downward, when the first driving rod rotates, because the first driving rod is connected to a slider, the second driving rod actually rotates, and the first driving rod has a larger rotation radius than the second driving rod (such as Figure 3 As shown in FIG. 1 , the first driving rod drives the slider to move along the length direction of the second connecting rod, and when the swing mirror swings, the deviation in the X direction will be reduced, such as Figure 4As shown; the first driving rod rotates until the parallelogram linkage mechanism hits the four-bar linkage block. There is a certain damping between the rotating pairs of the parallelogram linkage mechanism. When it does not hit the block, the shape of the parallelogram linkage mechanism will not change; the first driving rod continues to rotate, causing the parallelogram linkage mechanism to deform until the second driving rod hits the rotating block. In this process, the parallelogram linkage mechanism deforms, causing the swing mirror to reduce the deviation in the X direction and the Y direction. In addition, the deviation in the X direction is reduced by the sliding movement connected by the first driving rod. This structure eliminates the deviation of the swing mirror in the X direction and the Y direction; it enables the swing mirror whose swing center axis is not in the direction of the thickness center of the swing mirror to compensate for the deviation in two dimensions during the swinging process, so that the accuracy of the distance between the structures is guaranteed, and the use efficiency of the swing mirror is greatly improved.

[0027] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A position deviation compensation mechanism, characterized in that: The invention relates to a mirror comprising a swing mirror and a parallelogram linkage mechanism, wherein the parallelogram linkage structure comprises an upper link and a lower link arranged in parallel, and the parallelogram linkage structure further comprises a pair of side links arranged in parallel, wherein the side links are specifically a first link and a second link, and a damping structure exists in the rotating pairs between the four links of the parallelogram linkage mechanism, the outer side of the first link is fixedly connected to the inner surface of the swing mirror, and a swing mirror rotation point is arranged at the lower outer side of the second link, and the swing mirror rotation point is respectively pivotally connected to the corresponding ends of the first driving rod and the second driving rod, the length of the first driving rod is longer than the length of the second driving rod, and a slider is arranged on the second driving rod, and the slider moves along the The second connecting rod is arranged to move in the length direction, the other end of the first driving rod is pivotally connected to the slider, the other end of the second driving rod is pivotally connected to a pivot point at a fixed position in the length direction of the second connecting rod, the slider is arranged in the upper area of ​​the pivot point, and the upper and lower space areas of the second driving rod are respectively provided with fixed rotation blocks, and the two rotation blocks are used to limit the rotation range of the second driving rod, and the upper and lower positions of the upper connecting rod or the lower connecting rod are respectively provided with fixed four-link blocks, and when the upper connecting rod or the lower connecting rod hits the four-link block at the corresponding position, the entire parallelogram linkage mechanism will be deformed when the whole rotates; The rotation stopper includes a first upper rotation stopper and a second lower rotation stopper, and the positions of the first upper rotation stopper and the second lower rotation stopper are only used to block and limit the rotation range of the second driving rod and do not interfere with the first driving rod in a spatial range; The parallelogram linkage mechanism comprises an upper link, a lower link, a left link and a right link, the upper link and the lower link are arranged in parallel, the left link is the second link, the right link is the first link, the left link and the right link are arranged in parallel, the outer side of the right link is fixedly connected to the inner surface of the swing mirror, and four-bar fixed-position blocks are respectively arranged above and below the upper link, and when the upper link hits the four-bar block at the corresponding position, the entire parallelogram linkage mechanism will deform when the overall rotation occurs, a slider is provided on the left link, and the slider is arranged to move along the length direction of the left link, the other end of the first driving rod is pivotally connected to the slider, and the other end of the second driving rod is pivotally connected to a pivot point at a fixed position in the length direction of the left link, and four-bar fixed-position blocks are respectively arranged above and below the upper link, and when the upper link hits the four-bar block at the corresponding position, the entire parallelogram linkage mechanism will deform when the overall rotation occurs.

2. A position deviation compensation mechanism according to claim 1, characterized in that: The four-link stopper includes a first upper link stopper and a second lower link stopper. The first upper link stopper and the second lower link stopper are only used to block the position of the upper link or the lower link and do not interfere with the first link and the second link in a spatial range.

3. A position deviation compensation mechanism according to claim 2, characterized in that: The first upper connecting rod stopper and the second lower connecting rod stopper are both cylindrical structure stops.

4. A position deviation compensation mechanism according to claim 2, characterized in that: When the swing mirror is in the rotating state, the upper connecting rod or the lower connecting rod first contacts the first upper connecting rod stopper or the second lower connecting rod stopper, and then the entire swing mirror continues to rotate until the second driving rod contacts the first upper rotation stopper or the second lower rotation stopper, and the swing mirror stops the corresponding rotation.

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