A mirror frame

Abstract

The application discloses a mirror frame, which comprises a fixed structure, a movable structure and a tension spring connecting the fixed structure and the movable structure; the fixed structure comprises a first base and a first rod arranged on the first base; the movable structure comprises a second base, and the first rod is supported on the second base; the second base is provided with two first surfaces and second surfaces which are mutually angled, and each of the first surfaces and the second surfaces is matched with the first rod in an arc surface mode; or, the first base is further provided with a bearing rod which is parallel to the first rod, the first surface is matched with the first rod in an arc surface mode, and the second surface is matched with the bearing rod in an arc surface mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical technology, in particular to a mirror frame. BACKGROUND

[0002] The mirror frame is an important optical and mechanical adjusting 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 rod and a fulcrum are installed on the fixed part, and the movable part is connected with the fixed part through a tension spring. For example, a mirror frame disclosed in Chinese Patent No. 202210526202.4, which comprises a lens mounting seat, a fixed support connected to the lens mounting seat, and a support rod mounting structure connected to the fixed support, and a plurality of elastic members arranged between the lens mounting seat and the fixed support, both ends of the plurality of elastic members are connected to the lens mounting seat and the fixed support respectively.

[0003] The existing mirror frame with such structure can also be seen from Figure 21 and 22 The combination of the ball 301 (fixed structure) on the end of the adjusting screw rod 300 and the V-shaped groove 400 (movable structure) is adopted between the fixed support 100 and the movable support 200 (lens mounting seat), and the combination of the two parts is realized by the tension spring 500. When the load is large, the ball 301 will be separated from the matching surface of the V-shaped groove 400, thereby affecting the use effect. The weight of the movable support 200 will affect the stability of the whole mirror frame, and the shaking change of the adjusting screw rod 300 during the adjusting process will directly affect the movable support 200, thereby affecting the stability of the whole mirror frame structure. SUMMARY

[0004] The technical problem to be solved by the present application is to solve the above-mentioned problems existing in the prior art, and to provide a mirror frame to improve the stability.

[0005] The technical scheme adopted by the present application to solve the above-mentioned technical problem is as follows: a mirror frame, comprising a fixed structure, a movable structure and a tension spring connecting the fixed structure and the movable structure; the fixed structure comprises a first base and a first rod body arranged on the first base; the movable structure comprises a second base, and the first rod body is supported on the second base; characterized in that:

[0006] The second base has two first surfaces and second surfaces which are mutually angled, and the first surfaces and the second surfaces are respectively matched with the first rod body in an arc surface; or, the first base is further provided with a load-bearing rod parallel to the first rod body, the first surface is matched with the first rod body in an arc surface, and the second surface is matched with the load-bearing rod in an arc surface.

[0007] By making the two contact points of the fixed structure and the movable structure be arc surface matching, when the movable structure is adjusted, the smooth swing of the two structures can be ensured. When the load is large, the gravity of the movable structure is mostly added to the first rod body or the load-bearing rod, and to some extent, the larger the load, the higher the stability should be.

[0008] Further, in order to facilitate the formation of the arc surface matching structure, according to an aspect of the present application, the first rod body is a ball head rod, and the ball head at the end of the first rod body is tightly attached to the first surface;

[0009] The second surface is provided with a second rod body protruding towards the first rod body, and the second rod body is a cylinder or a semi-cylinder, and the protruding arc surface of the second rod body is supported on the first rod body or the load-bearing rod.

[0010] Further, in order to facilitate the formation of the arc surface matching structure, according to an aspect of the present application, the end of the first rod body is provided with a convex ball structure, which is tightly attached to the first surface and the second surface.

[0011] In order to facilitate the positioning and swing of the movable structure relative to the first rod body, a positioning groove is further formed in the second base, the positioning groove is recessed from the first surface towards the first base, and the end of the first rod body is supported in the positioning groove.

[0012] Further, according to an aspect of the present application, the bottom surface of the positioning groove away from the second surface is a slope, and the bottom surface gradually inclines towards the second surface from the side close to the first base to the direction away from the first base, and the end of the first rod body is supported on the bottom surface. Thus, when the movable structure is adjusted to swing, the pulling force of the tension spring also forms a pushing force through the bottom surface, thereby making the structure more stable.

[0013] Further, in order to make the structure more stable, according to an aspect of the present application, the positioning groove is a triangular pyramid, and the side of the positioning groove towards the first base is the bottom surface of the triangular pyramid.

[0014] Preferably, the XYZ coordinate system is established in the following manner: the X-axis direction is the axial direction of the first rod body and is horizontal, the Z-axis direction is the vertical direction up and down, and the Y-axis is perpendicular to the X-axis and the Z-axis. The number of the first rod bodies is three, which are respectively referred to as the first rod, the second rod and the third rod. The first rod and the second rod are arranged in the Y-axis direction, the second rod and the third rod are arranged in the Z-axis direction, and the second rod is below the third rod. Thus, two-dimensional swing adjustment and one-dimensional linear displacement adjustment can be satisfied.

[0015] In order to make horizontal and vertical symmetry, reduce the directionality requirement in operation or installation, the second base is further provided with a positioning groove which is formed by recessing a part of the first surface away from the first base;

[0016] The positioning groove matched with the first rod extends in the Y-axis direction, the positioning groove matched with the third rod extends in the Z-axis direction, and the positioning groove matched with the second rod is inclined at 45° to both the Y-axis direction and the Z-axis direction.

[0017] In order to make horizontal and vertical symmetry, reduce the directionality requirement in operation or installation, the second surface matched with the first rod is inclined at 45° to both the Y-axis direction and the Z-axis direction.

[0018] In order to improve the adjustment accuracy, the mirror holder further comprises an adjusting screw and a lever, the first rod body and the adjusting screw are respectively arranged at opposite ends of the lever, the first rod body is located at the side of the lever facing the movable structure, and the adjusting screw is located at the side of the lever away from the movable structure, and the lever is rotationally connected with the first base at a position close to the first rod body.

[0019] Compared with the prior art, the advantages of the present application are that: by making the two contact points of the fixed structure and the movable structure be arc-shaped surface matching, when the movable structure is adjusted, the smooth swing of the two structures can be ensured. When the load is large, the gravity of the movable structure is mostly added to the first rod body or the load-bearing rod, and to some extent, the larger the load, the higher the stability should be. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The figure is a schematic view of the mirror holder of the first embodiment of the present application;

[0021] Figure 2 The figure is a schematic view of the movable structure, the adjusting screw and the positioning rod of the mirror holder of the first embodiment of the present application;

[0022] Figure 3 The figure is a side view of the mirror holder of the first embodiment of the present application;

[0023] Figure 4 The figure is a front view of the mirror holder of the first embodiment of the present application;

[0024] Figure 5 The figure is a schematic view of the mirror holder of the second embodiment of the present application;

[0025] Figure 6 The figure is a schematic view of the movable structure, the adjusting screw and the positioning rod of the mirror holder of the second embodiment of the present application;

[0026] Figure 7 The figure is a schematic view of the mirror holder of the third embodiment of the present application;

[0027] Figure 8 Schematic view of the moving structure, adjusting screw and positioning rod of the mirror mount according to the third embodiment of the present application;

[0028] Figure 9 Schematic view of the mirror mount according to the fourth embodiment of the present application;

[0029] Figure 10 Schematic view of the moving structure and adjusting screw of the mirror mount according to the fourth embodiment of the present application;

[0030] Figure 11 Schematic view of the moving structure, adjusting screw and positioning rod of the mirror mount according to the fifth embodiment of the present application;

[0031] Figure 12 Schematic view of the mirror mount according to the sixth embodiment of the present application;

[0032] Figure 13 Schematic view of the mirror mount according to the seventh embodiment of the present application;

[0033] Figure 14 Schematic view of the moving structure and positioning rod of the mirror mount according to the eighth embodiment of the present application;

[0034] Figure 15 Front view of the moving structure and positioning rod of the mirror mount according to the eighth embodiment of the present application;

[0035] Figure 16 Schematic view of the moving structure and positioning rod of the mirror mount according to the ninth embodiment of the present application;

[0036] Figure 17 Front view of the moving structure and positioning rod of the mirror mount according to the ninth embodiment of the present application;

[0037] Figure 18 Schematic view of the mirror mount according to the tenth embodiment of the present application;

[0038] Figure 19 Schematic view of the moving structure, positioning rod, adjusting screw and tension spring of the mirror mount according to the tenth embodiment of the present application;

[0039] Figure 20 Schematic view of the moving structure, positioning rod, adjusting screw and tension spring of the mirror mount according to the tenth embodiment of the present application; Figure 19

[0040] Figure 21 Schematic view of the mirror mount according to the prior art;

[0041] Figure 22 Schematic view of the hidden fixing support of the mirror mount according to the prior art. DETAILED DESCRIPTION​

[0042] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, since the disclosed embodiments of the present application can be arranged in different directions, so these orientation-indicating terms are only illustrative and should not be regarded as limiting, such as "upper", "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity. In addition, the features defined as "first", "second" can be explicitly or implicitly included one or more features.

[0044] Embodiment one

[0045] Referring to Figures 1-4 A mirror frame includes a fixed structure 1 and a movable structure 2, and the two parts are connected by a tension spring (not shown in the corresponding drawings of this embodiment, which is a prior art, see the corresponding drawings of Embodiment Ten described below).

[0046] The fixed structure 1 includes a first base 11 and a first rod body 12 arranged on the first base 11, and the movable structure 2 includes a second base 21 and a second rod body 22 arranged on the second base 21. The second rod body 22 is a cylinder or a semi-cylinder, and the arc surface part of the second rod body 22 is supported on the first rod body 12, and the second rod body 22 and the first rod body 12 are in contact with each other.

[0047] An XYZ coordinate system is established, wherein the axial direction of the first rod body 12 is the X-axis direction (usually horizontal when in use), the vertical direction up and down is the Z-axis direction, the Y-axis is perpendicular to the X-axis and the Z-axis, the rotation around the X-axis is recorded as the a-direction rotation, the rotation around the Y-axis is recorded as the b-direction rotation, and the rotation around the Z-axis is recorded as the c-direction rotation. Correspondingly, the number of first rod bodies 12 is at least three, of which at least two first rod bodies 12 are arranged in the Y-axis direction, and at least two first rod bodies 12 are arranged in the Z-axis direction. The first rod body 12 can be used for supporting positioning or adjustment. Here, the arrangement in the Y-axis direction means that the center line of the ball head 121 of each first rod body 12 extends along the Y-axis direction.

[0048] In the present embodiment, the number of the first rods 12 is three, one of which is shared by the two directions. For the convenience of description, the above three first rods 12 are respectively referred to as the first rod 123, the second rod 124 and the third rod 125, wherein the first rod 123 and the second rod 124 are arranged at intervals in the Y-axis direction, the second rod 124 and the third rod 125 are arranged at intervals in the Z-axis direction, and the second rod 124 is below the third rod 125.

[0049] The second base 21 has two mutually angled first and second surfaces 211 and 212, preferably perpendicular to each other. The first surface 211 serves as a positioning surface. In the present embodiment, the first rod 12 is a ball head rod, and the ball head 121 at the end of the first rod 12 is in close contact with the first surface 211. In the initial state, the first surface 211 and the first rod 12 can be perpendicular to each other. In order to better support and position, the second base 21 can also be provided with a positioning groove 23, which is formed by recessing a portion of the first surface 211 away from the first base 11. The bottom surface 231 of the positioning groove 23 away from the second surface 212 is a bevel surface, which extends from the side close to the first base 11 to the direction away from the first base 11, gradually approaching the second surface 212. The ball head 121 of the first rod 12 is supported on the bottom surface 231. The second rod 22 is arranged on the second surface 212 and protrudes towards the bottom surface 231.

[0050] Since the two contact points of the fixed structure 1 and the movable structure 2 are both arc surface matching (referring to at least one of the two surfaces in contact with each other being an arc surface, protruding towards the other surface), when the movable structure 2 is adjusted, the two structures can still be smoothly swung through the tension spring. When the load is large, the gravity of the movable structure 2 is mostly directly and vertically added to the first rod 12 through the second rod 22, and to some extent, the larger the load, the higher the stability should be. In addition, the tension of the tension spring also forms a downward thrust through the bottom surface 231, thereby making the structure more stable.

[0051] The one-dimensional (b-direction) angle adjustment shown in the present embodiment is achieved by the third rod 125 arranged in the Z-axis direction in the form of an adjusting screw, which passes through the fixed structure 1 and is in close contact with the movable structure 2. By screwing the adjusting screw, the movable structure 2 can be swung and adjusted in the b-direction.

[0052] Embodiment Two

[0053] Reference Figure 5 and Figure 6 In the present embodiment, the difference from the above-mentioned embodiment one is that the first rod 123 is in the form of an adjusting screw, at which time one-dimensional (c-direction) angle adjustment can be achieved.

[0054] Embodiment Three

[0055] See Figure 7 and Figure 8 In this embodiment, the difference from the first embodiment is that the first rod 123 and the third rod 125 are in the form of adjusting screws, which can be used for two-dimensional (b and c directions) angle adjustment.

[0056] Example 4

[0057] See Figure 9 and Figure 10 In this embodiment, the difference from the above embodiment three is that all three first rods 12 are in the form of adjusting screws, which can be used for two-dimensional (b, c directions) angle adjustment and X-direction displacement adjustment (the two first rods 12 arranged at intervals on the Y axis move synchronously).

[0058] Example 5

[0059] See Figure 11 In this embodiment, the difference from Embodiment 1 is that the positioning groove 23 is a triangular pyramid, with the base of the pyramid facing the first base 11. This not only generates a downward thrust but also secures the movable structure 2, preventing it from sliding in the horizontal direction (Y-axis direction). Such a structure can be used as a fulcrum structure for the reflector mount. The advantage of this structure is its large load capacity while ensuring higher stability.

[0060] The positioning groove 23 in Examples 2 to 4 can also adopt the form of this example.

[0061] Example 6

[0062] See Figure 12 In this embodiment, the difference from the first embodiment is that the second rod 22 is no longer provided, and the first rod 12 is no longer a ball-headed rod (the ball head 121 at the end is spherical), but instead adopts a convex spherical structure 122 at the end, with the second surface 212 being a plane, directly supported on the top of the convex spherical structure 122. This ensures that both horizontal and vertical swinging are made in contact with the spherical arc, thereby ensuring smooth adjustment.

[0063] The structure of this embodiment is also applicable to replacing the corresponding structures in embodiments two through five.

[0064] Example 7

[0065] See Figure 13In this embodiment, the difference from the first embodiment is that the first rod 12 not only bears the load, but also adjusts the swing in the corresponding direction, so the stability of the whole formed by the first rod 12 and the movable structure 2 is required to be higher. For this purpose, the first base 11 of the fixed structure 1 is further provided with a load-bearing rod 13, which is arranged in parallel with the first rod 12 and is higher than the first rod 12, the first rod 12 is no longer matched with the second rod 22, and the second rod 22 is supported on the top of the load-bearing rod 13, so that the load-bearing rod 13 bears the original load of the first rod 12, and the first rod 12 only needs to adjust the swing, therefore, preferably, the bottom surface 231 of the positioning groove 23 can not be inclined, and the ball head 121 abuts against the surface of the positioning groove 23 away from the first base 11.

[0066] The structure of this embodiment is also applicable to replace the corresponding structure in embodiments two to five.

[0067] Embodiment eight

[0068] Referring to Figure 14 and Figure 15 In this embodiment, the positioning groove 23 matched with the first rod 123 extends in the Y-axis direction, and the difference from the first embodiment is that the positioning groove 23 matched with the third rod 125 extends in the Z-axis direction, and the positioning groove 23 matched with the second rod 124 is inclined at 45° to the Y-axis direction and the Z-axis direction respectively, so that the horizontal and vertical directions are symmetrical. When the load is installed, part of the load is transferred to the fixed structure 1 through the first rod 12, and part of the load is directly transferred to the fixed structure 1 through the first rod 12 abutting against the fixed structure 1, so as to form a stable structure.

[0069] The structure of this embodiment is also applicable to embodiments two to seven.

[0070] Embodiment nine

[0071] Referring to Figure 16 and Figure 17 In this embodiment, the difference from the eighth embodiment is that the second surface 212 matched with the first rod 123 and the second rod 22 are both inclined at 45° to the Y-axis direction and the Z-axis direction, and the positioning groove 23 matched with the second rod 124 is horizontal.

[0072] Embodiment ten

[0073] Referring to Figures 18-20The structure of the tension spring 4 is shown in the drawing of the embodiment. In this embodiment, the difference from the above-mentioned embodiments 1-9 is the structure of the adjusting mechanism. The mirror holder further comprises a lever 5, and the first rod body 12 is arranged at one end of the lever 5 and cooperates with the movable structure 2. The lever 5 is provided with a rotating shaft 52 at a position adjacent to the first rod body 12, and the rotating shaft 52 of the lever 5 cooperating with the first rod 123 extends along the Z-axis direction, and the rotating shaft 52 of the lever 5 cooperating with the third rod 125 extends along the Y-axis direction, thereby connecting the lever 5 and the first base 11 in rotation, and a shaft sleeve 53 can be arranged at the position where the rotating shaft 52 is connected with the lever 5. The mirror holder further comprises a separately arranged adjusting screw 3, and the adjusting screw 3 is arranged at the other end of the lever 5, and the first rod body 12 is located at the side of the lever 5 facing the movable structure 2, and the adjusting screw 3 is located at the side of the lever 5 away from the movable structure 2. The position of the lever 5 cooperating with the adjusting screw 3 is provided with a polishing sheet 51, which is made of ceramic, sapphire or the like, and can be used to reduce the influence of friction on the adjusting accuracy during the adjusting process and increase the wear resistance.

[0074] Thus, the first rod body 12, the lever 5 and the adjusting screw 23 form a lever adjusting structure, which can increase the adjusting accuracy, and the influence of the adjusting screw 3 shaking during the adjusting process can be eliminated through the close cooperation of the rotating shaft 52 and the shaft sleeve 26.

Claims

1. A reflector frame, comprising a fixed structure (1), a movable structure (2), and a tension spring (4) connecting the fixed structure (1) and the movable structure (2); the fixed structure (1) comprises a first base (11) and a first rod (12) disposed on the first base (11); the movable structure (2) comprises a second base (21), the first rod (12) being supported on the second base (21); characterized in that: The second base (21) has two mutually angled first surfaces (211) and second surfaces (212), each of which has an arc-shaped surface fit with the first rod (12); or, the first base (11) is also provided with a load-bearing rod (13) parallel to the first rod (12), the first surface (211) has an arc-shaped surface fit with the first rod (12), and the second surface (212) has an arc-shaped surface fit with the load-bearing rod (13). The first rod (12) is a ball-headed rod, and the ball head (121) at the end of the first rod (12) is attached to the first surface (211); The second surface (212) is provided with a second rod (22) protruding towards the first rod (12). The second rod (22) is a cylinder or a semi-cylinder. The arc-shaped surface of the second rod (22) is supported on the first rod (12) or the load-bearing rod (13).

2. The reflector frame according to claim 1, characterized in that: The second base (21) is also provided with a positioning groove (23), which is formed by a portion of the first surface (211) recessed away from the first base (11), and the end of the first rod (12) is supported in the positioning groove (23).

3. The reflector frame according to claim 2, characterized in that: The bottom surface (231) of the positioning groove (23) away from the second surface (212) is an inclined surface. The bottom surface (231) extends inclinedly from the side close to the first base (11) towards the direction away from the first base (11) and gradually approaches the second surface (212). The end of the first rod (12) is supported on the bottom surface (231).

4. The reflector frame according to claim 2, characterized in that: The positioning groove (23) is triangular pyramidal, and the side of the positioning groove (23) facing the first base (11) is the bottom surface of the triangular pyramid.

5. The reflector frame according to claim 1, characterized in that: An XYZ coordinate system is established as follows: the X-axis is the axial direction of the first rod (12) and is horizontal; the Z-axis is the vertical direction; and the Y-axis is perpendicular to both the X-axis and the Z-axis. There are three first rods (12), which are referred to as the first rod (123), the second rod (124), and the third rod (125). The first rod (123) and the second rod (124) are arranged at intervals along the Y-axis, and the second rod (124) and the third rod (125) are arranged at intervals along the Z-axis. The second rod (124) is located below the third rod (125).

6. The reflector frame according to claim 5, characterized in that: The second base (21) is also provided with a positioning groove (23), which is formed by a portion of the first surface (211) being recessed in a direction away from the first base (11); The positioning groove (23) that cooperates with the first rod (123) extends in the Y-axis direction, the positioning groove (23) that cooperates with the third rod (125) extends in the Z-axis direction, and the positioning groove (23) that cooperates with the second rod (124) is inclined at 45° to both the Y-axis direction and the Z-axis direction.

7. The reflector frame according to claim 5, characterized in that: The second surface (212) that mates with the first bar (123) is inclined at 45° to both the Y-axis and Z-axis directions.

8. The reflector frame according to claim 1, characterized in that: The reflector frame also includes an adjusting screw (3) and a lever (5). The first rod (12) and the adjusting screw (3) are respectively located at opposite ends of the lever (5). The first rod (12) is located on the side of the lever (5) facing the movable structure (2), while the adjusting screw (3) is located on the side of the lever (5) away from the movable structure (2). The lever (5) is rotatably connected to the first base (11) at a position close to the first rod (12).

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