Reflecting mirror bracket

Abstract

The utility model discloses a reflector bracket, which comprises a fixed structure, a movable structure and a tension spring for connecting the fixed structure and the movable structure, the fixed structure comprises a fixed block, and the movable structure comprises an adjusting block capable of swinging relative to the fixed block; one of the fixed block and the adjusting block is provided with a ball body, the other one of the fixed block and the adjusting block is provided with a flat plate, and the ball body is supported on the flat plate and is in point contact with the flat plate. Compared with the prior art, the utility model has the advantages that the friction force between the ball body and the flat plate can be kept at the level as small as possible through the point contact matching of the ball body and the flat plate, thereby ensuring that the adjusting block smoothly swings relative to the fixed block and improving the stability; besides, the mode that the sphere is matched with the flat plate can save the space and the cost of the reflector bracket, so that the processing of each structure in the reflector bracket and the installation of parts do not conflict with each other.

Description

Technical Field

[0001] The utility model relates to the technical field of optics, in particular to a reflective mirror frame. Background Art

[0002] The reflector frame is an important optical machine adjustment component, and its conventional structure is divided into two parts, one part is a fixed part, and the other part is an adjustable structure, a screw, a fulcrum is installed on the fixed part, and the movable part is connected to the fixed part through a tension spring. For example, a reflector frame disclosed in a Chinese patent with application number 202210526202.4 includes a lens mounting seat, a fixed support connected to the lens mounting seat, and a support rod mounting structure connected to the fixed support. The reflector frame also includes a plurality of elastic members arranged between the lens mounting seat and the fixed support, and the two ends of the plurality of elastic members are respectively connected to the lens mounting seat and the fixed support.

[0003] The existing reflector frame of this structure can also be seen in Figure 8 and 9 A combination of a ball 301 (set on the fixed structure) and a V-groove 400 (set on the movable structure) on the end of the adjusting screw 300 is used between the fixed support 100 and the movable support 200 (lens mounting seat), and the combination of the two parts is achieved by a tension spring 500. When a large load is applied, the ball 301 will be separated from the mating surface of the V-groove 400, thereby affecting the use effect; the weight of the movable support 200 will affect the overall stability of the frame, and the shaking changes of the adjusting screw 300 during the adjustment process will directly affect the movable support 200, thereby affecting the stability of the entire frame structure. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a reflector frame to improve stability in view of the deficiencies in the above-mentioned prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a reflector frame, including a fixed structure, a movable structure and a tension spring connecting the fixed structure and the movable structure, the fixed structure includes a fixed block, and the movable structure includes an adjustment block that can swing relative to the fixed block; the characteristics are:

[0006] A sphere is arranged on one of the fixed block and the adjusting block, and a plate is arranged on the other of the fixed block and the adjusting block. The sphere is supported on the plate and keeps point contact with the plate.

[0007] Therefore, through the point contact cooperation between the sphere and the plate, the friction between the two can be kept at the smallest possible level, thereby ensuring that the adjustment block swings smoothly relative to the fixed block and improving stability; in addition, this way of cooperation between the sphere and the plate can save space and cost of the reflector frame, so that the structural processing and installation of components in the reflector frame will not conflict.

[0008] Preferably, the sphere is fixed on the adjusting block, and the plate is fixed on the fixing block.

[0009] Preferably, a groove is formed on the adjustment block, the sphere is bonded and fixed in the groove, and at least part of the sphere is exposed from the adjustment block, the plate is bonded and fixed to the fixing block, and the fixing block fits the plate. Thus, there is a large contact and fixing area between the sphere and the adjustment block, and between the plate and the fixing block, so that the bonding is firmer, the stability of the reflector frame is improved, and product problems caused by design defects are reduced.

[0010] Preferably, the sphere is a spherical sphere or a spherical segment.

[0011] Further, a coordinate system XYZ is established, wherein the X axis, the Y axis and the Z axis are perpendicular to each other;

[0012] There are two flat plates, each of which is provided with a corresponding sphere, wherein the surface of one flat plate in contact with the corresponding sphere is on the XZ plane where the X-axis and the Z-axis are located, and the surface of the other flat plate in contact with the corresponding sphere is on the YZ plane where the Y-axis and the Z-axis are located;

[0013] The reflector frame also includes an adjusting screw, the axis of which extends along the Z axis, and the head of which contacts the surface of the adjusting block, thereby pushing the adjusting block to swing around the X axis or the Y axis.

[0014] Furthermore, to facilitate adjustment in two directions, there are three adjusting screws, two of which are arranged at intervals on the X-axis, two of which are arranged at intervals on the Y-axis, and one of the adjusting screws is shared by the two directions.

[0015] To facilitate positioning of the adjusting screw, the fixing block includes a first fixing portion and a second fixing portion, wherein the first fixing portion is arranged on the periphery of the adjusting block, and the second fixing portion is located on one side of the adjusting block along the Z axis, and the adjusting screw passes through the second fixing portion and cooperates with the adjusting block.

[0016] Preferably, the fixing block includes a first fixing portion and a second fixing portion, the first fixing portion is arranged on the outer periphery of the adjusting block, the second fixing portion is arranged on one side of the adjusting block, and the flat plate is fixed to the first fixing portion.

[0017] Compared with the prior art, the utility model has the following advantages: through the point contact cooperation between the sphere and the plate, the friction between the two can be kept at the smallest possible level, thereby ensuring that the adjustment block swings smoothly relative to the fixed block and improving stability; in addition, this way of cooperation between the sphere and the plate can save space and cost of the reflector frame, so that the various structural processing and installation of parts in the reflector frame will not conflict; the fixing method of the sphere and the plate makes the sphere and the adjustment block, and the plate and the fixed block have a larger contact and fixing area, so that the bonding is more firm, the stability of the reflector frame is improved, and product problems caused by design defects are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the principle of the reflector frame of the embodiment of the utility model;

[0019] Figure 2 A schematic diagram of a reflector frame according to an embodiment of the present utility model;

[0020] Figure 3 It is a schematic diagram of the exploded structure of the reflector frame of the embodiment of the utility model;

[0021] Figure 4 A schematic diagram of an adjustment block of a reflector frame according to an embodiment of the utility model;

[0022] Figure 5 to Figure 7 It is a schematic diagram of the adjustment block of the reflector frame of the embodiment of the utility model in different states;

[0023] Figure 8 A schematic diagram of a reflector frame of the prior art;

[0024] Fig. 9 The figure is a schematic diagram of a reflector frame in the prior art with a hidden fixed support. DETAILED DESCRIPTION

[0025] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions.

[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present utility model can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0027] See also Figure 1 , showing the principle diagram of the reflector frame of the utility model, the reflector frame is a commonly used optical adjustment mechanism, and its basic principle is to use two screws to allow the adjustment block part of the frame to produce an angular swing in the horizontal and vertical dimensions, thereby changing the optical element installed on the adjustment block.

[0028] In order to reduce the size of the entire adjustment system and increase the bearing capacity of the system, the utility model adopts point contact between the adjustment block 21 (which will be described in detail below in conjunction with the corresponding drawings) and the fixed block 11 (which will be described in detail below in conjunction with the corresponding drawings) to extend the service life of the reflector frame. Preferably, the two that achieve point contact are the sphere 22 and the plate 12, respectively, and both are made of wear-resistant materials, preferably ceramic materials, with a large load-bearing capacity. When there is an optical load on the adjustment block 21, the gravity of the load (in the direction shown by the arrow) is applied to the contact point between the sphere 22 and the plate 12, and no indentation will be generated on the sphere 22 and the plate 12, thereby extending the service life of the reflector frame.

[0029] Specifically, the application structure of the above principle can be found in Figure 2 to Figure 4The reflector frame includes a fixed structure and a movable structure. The fixed structure includes a fixed block 11 and a flat plate 12. The movable structure includes an adjustment block 21 and a sphere 22. The sphere 22 can be a complete sphere or a spherical segment. In the present embodiment, a complete sphere or a hemisphere is preferred. The hemisphere is shown in the figure. Preferably, the combination of the sphere 22 and the flat plate 12 has two groups, and the flat plates 12 of one group are perpendicular to the flat plates 12 of the other group to achieve adjustment in two dimensions. One group can be set at the bottom of the overall structure of the reflector frame, and the other group is set at the side of the overall structure of the reflector frame. The group at the bottom can have two spheres (two corresponding to the same flat plate), and the group at the side can have one sphere (one corresponding flat plate). The number of spheres 22 and flat plates 12 can also be changed as needed, but there are at least two, one of which is set at the bottom and the other is set at the side.

[0030] The fixed block 11 includes a first fixed portion 111 and a second fixed portion 112, which are an integrally formed structure, wherein the first fixed portion 111 is arranged on the periphery of the adjusting block 21, and the second fixed portion 112 is located on one side of the adjusting block 21, and the movable structure also includes a cover plate 23, which swings synchronously with the adjusting block 21, and the cover plate 23 and the second fixed portion 112 are located on opposite sides of the adjusting block 21.

[0031] For the convenience of clear description, a coordinate system XYZ is established, in which the X-axis, Y-axis and Z-axis are perpendicular to each other. The second fixing portion 112 and the cover plate 13 are respectively arranged on opposite sides of the adjustment block 21 along the Z-axis. Two of the spheres 22 are located on the bottom surface of the adjustment block 21, arranged at intervals on the X-axis (including the X-axis and the direction parallel to the X-axis here), and share the same flat plate 12. The other sphere 21 is arranged on the side of the adjustment block 21. The surface of the flat plate 12 at the bottom that contacts the corresponding sphere 22 is on the XZ plane where the X-axis and the Z-axis are located (including the XZ plane and the plane parallel to it here), and the surface of the flat plate 12 on the side that contacts the corresponding sphere 22 is on the YZ plane where the Y-axis and the Z-axis are located (including the YZ plane and the plane parallel to it here).

[0032] A groove 211 is formed on the adjustment block 21, and the sphere 22 can be fixed in the groove 211 by glue, and at least the top of the spherical crown of the sphere 22 is exposed in the adjustment block 21, and the shape of the groove 211 is adapted to the sphere 22. The flat plate 12 can be fixed to the first fixing portion 111 of the fixed block 11 by glue, and the first fixing portion 111 and the flat plate 12 are fixed at the flat plate 12, such as both are planes. As a result, there is a large contact and fixing area between the sphere 22 and the adjustment block 21, and between the flat plate 12 and the fixed block 11, so that the bonding is relatively firm, the stability of the reflector frame is improved, and product problems caused by design defects are reduced; in addition, this way of matching the sphere 22 and the flat plate 12 can save the space and cost of the reflector frame, so that the processing of various structures in the reflector frame and the installation of parts will not conflict. Alternatively, the sphere 22 can also be fixed to the adjustment block 21 by interference fit with the groove 211, and the flat plate 12 can be assembled with the fixed block 11 in the same way.

[0033] Alternatively, the plate 12 may be disposed on the adjusting block 21 , and the sphere 22 may be disposed on the fixing block 11 , as long as the same contact method is maintained.

[0034] The reflector frame further includes a tension spring 3, the two ends of which are respectively fixed to the second fixing portion 112 of the fixing block 11 and the adjusting block 21, thereby applying tension to the second fixing portion 112 and the adjusting block 21 to ensure that the top of the spherical crown of the sphere 22 fits the corresponding flat plate 12. There are at least two tension springs 3, which are arranged on the X-axis (or a parallel direction) and the Y-axis (or a parallel direction) to ensure that the adjusting block 21 can be reset relative to the fixing block 11 after adjustment.

[0035] The reflector frame also includes an adjusting screw 4, which is a fine adjustment screw in the present embodiment. The adjusting screw 4 passes through the second fixing portion 112 of the fixing block 11, so that the head of the adjusting screw 4 contacts the surface of the adjusting block 21 facing the second fixing portion 112. There are also three adjusting screws 4, two of which are arranged at intervals on the X-axis (including the X-axis and the direction parallel to the X-axis here), and two of which are arranged at intervals on the Y-axis (including the Y-axis and the direction parallel to the Y-axis here), and one of the adjusting screws 4 is shared by both directions. The axis of each screw 4 extends along the Z-axis (including the Z-axis and the direction parallel to the Z-axis here). By operating the adjusting screw 4, the adjusting block 21 can be swung relative to the fixing block 11 (it can be reset by the tension spring 3 after adjustment). Specifically, by operating two adjusting screws 4 arranged at intervals along the X-axis, the adjusting block 21 can be swung around the X-axis (including the X-axis and the direction parallel to the X-axis here), and by operating two adjusting screws 4 arranged at intervals along the Y-axis, the adjusting block 21 can be swung around the Y-axis (including the Y-axis and the direction parallel to the Y-axis here). Alternatively, adjusting screws 4 may be added in the X-axis direction and the Y-axis direction.

[0036] See also Figure 5 , the adjustment block 21 is in the initial state. Figure 6 and Figure 7 , the adjusting block 21 swings around the X-axis relative to the fixed block 22, and the spherical crown curvature of the sphere 22 allows the adjusting block 21 to swing smoothly on the flat plate 12. During adjustment, the sphere 22 on the adjusting block 21 will roll, but will also slide to a certain extent, so wear-resistant and high-hardness ceramic materials are preferably used here to help improve service life. In other words, during the above adjustment process, the sphere 22 and the flat plate 12 always maintain point contact, which can keep the friction between the two at the smallest possible level, thereby ensuring that the adjusting block 21 swings smoothly.

Claims

1. A reflector frame, comprising a fixed structure, a movable structure and a tension spring (3) connecting the fixed structure and the movable structure, wherein the fixed structure comprises a fixed block (11), and the movable structure comprises an adjustment block (21) capable of swinging relative to the fixed block (11); characterized in that: A sphere (22) is arranged on one of the fixed block (11) and the adjusting block (21), and a plate (12) is arranged on the other of the fixed block (11) and the adjusting block (21); the sphere (22) is supported on the plate (12) and maintains point contact with the plate (12).

2. The reflector frame according to claim 1, characterized in that: The sphere (22) is fixed on the adjustment block (21), and the plate (12) is fixed on the fixing block (11).

3. The reflector frame according to claim 2, characterized in that: The adjusting block (21) is formed with a groove (211), the sphere (22) is bonded and fixed in the groove (211), and at least a portion of the sphere (22) is exposed from the adjusting block (21), the flat plate (12) is bonded and fixed to the fixing block (11), and the fixing block (11) is in close contact with the flat plate (12).

4. The reflector frame according to any one of claims 1 to 3, characterized in that: The sphere (22) is a round sphere or a spherical segment.

5. The reflector frame according to any one of claims 1 to 3, characterized in that: Establish a coordinate system XYZ, in which the X-axis, Y-axis and Z-axis are perpendicular to each other; There are two plates (12), each plate (12) is provided with a corresponding sphere (22), a surface of one plate (12) in contact with the corresponding sphere (22) is on an XZ plane where the X-axis and the Z-axis are located, and a surface of the other plate (12) in contact with the corresponding sphere (22) is on a YZ plane where the Y-axis and the Z-axis are located; The reflector frame also includes an adjusting screw (4), the axis of which extends along the Z axis, and the head of which contacts the surface of the adjusting block (21), thereby pushing the adjusting block (21) to swing around the X axis or the Y axis.

6. The reflector frame according to claim 5, characterized in that: There are three adjusting screws (4), two of which are arranged at intervals on the X-axis, two of which are arranged at intervals on the Y-axis, and one of the adjusting screws (4) is shared by two directions.

7. The reflector frame according to claim 5, characterized in that: The fixing block (11) comprises a first fixing portion (111) and a second fixing portion (112); the first fixing portion (111) is arranged on the outer periphery of the adjusting block (21); the second fixing portion (112) is located on one side of the adjusting block (21) along the Z axis; and the adjusting screw (4) passes through the second fixing portion (112) and cooperates with the adjusting block (21).

8. The reflector frame according to claim 1, characterized in that: The fixing block (11) comprises a first fixing portion (111) and a second fixing portion (112); the first fixing portion (111) is arranged on the outer periphery of the adjusting block (21); the second fixing portion (112) is arranged on one side of the adjusting block (21); and the plate (12) is fixed to the first fixing portion (111).

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