A field shading device for a plotter

Abstract

The utility model relates to surveying instrument technical field especially a kind of surveying instrument field shading device, it is installed on the lens end of surveying instrument main body, including cover body, the cover body is detachably connected by elastic structure with the lens end of surveying instrument main body, rotating joint has sunshade in the opening end of the cover body, sunshade and the cover body between being equipped with positioning structure, the positioning structure is used to fix sunshade;Wherein, the cover body between the both sides of opening end and sunshade are also equipped with sunshade soft membrane, first annular portion and second annular portion between inside and outside sleeve joint, and after sleeve joint, at least one of the protruding structure is also clamped in positioning hole under the action of elastic part, realize the effect of fixed cover body, to reach the effect of convenient disassembly and assembly cover body and facilitate carrying surveying instrument, in addition, sunshade and cover body between also be fixed by positioning structure, avoid appearing sunshade fixation unstable and then influence surveying instrument use condition.

Description

Technical Field

[0001] This utility model relates to the field of surveying instrument technology, and in particular to a field shading device for surveying instruments. Background Technology

[0002] Surveying instruments refer to various instruments and equipment used in the surveying process, including angle measuring instruments, distance measuring instruments, levels, total stations, GPS surveying instruments, etc. These instruments, through different technical means, can accurately measure the geometric features of points, lines, and surfaces on the Earth's surface, as well as elevations, and are used to generate maps, topographic maps, and other surveying results.

[0003] When surveying instruments are used in the field, strong sunlight can affect the lens's field of view. Therefore, a light-shielding device needs to be installed at the lens end of the surveying instrument to prevent interference from strong light. For example, the prior art Chinese Patent Publication No. "CN217132189U" discloses a surveying instrument with a light-shielding function, including a base. Support arms are fixedly installed on the outer surfaces of both sides of the base. A connecting bolt is provided at the other end of the support arm, and a support foot is provided at the lower end of the connecting bolt. A spiral fixing clamping device for improving installation convenience is fixedly installed on the upper outer surface of the base. The surveying instrument with a light-shielding function described in this utility model can better conduct surveying by setting up a light-shielding plate device, reducing the errors that exist during surveying, and enabling more efficient operation. The side light-shielding plate and the upper light-shielding plate form a locking structure with the lens of the surveying instrument body through connecting hinges and movable shafts. When the surveying work is finished, the side light-shielding plate and the upper light-shielding plate are closed, which can protect the lens of the surveying instrument body from impacts and bumps, and also improve the protection of the surveying instrument body.

[0004] In actual operation, the mounting plate in the light shield device is fixed to the lens end of the surveying instrument body. Considering that the light shield device and the surveying instrument body cannot be easily disassembled, the surveying instrument is not easy to carry. In addition, the lack of fixing measures between the mounting plate and the upper light shield can easily cause the upper light shield to flip over, affecting the use of the surveying instrument. Utility Model Content

[0005] The purpose of this utility model is to solve the shortcomings of the existing technology, such as the inability to easily disassemble the above-mentioned light-shielding plate device from the main body of the surveying instrument, and the lack of fixing measures between the mounting plate and the upper light-shielding plate, and to propose a field light-shielding device for surveying instruments.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a field shading device for a surveying instrument, which is installed on the lens end of the surveying instrument body and includes a cover. The cover is detachably connected to the lens end of the surveying instrument body through an elastic structure. A light-shielding plate is rotatably connected to the open end of the cover. A positioning structure is provided between the light-shielding plate and the cover, and the positioning structure is used to fix the light-shielding plate.

[0008] The cover is provided with a light-shielding soft film between the two sides of the opening end and the light-shielding plate.

[0009] Furthermore, the elastic structure includes an elastic part, and the main body of the surveying instrument is fixedly connected to a first annular part at the lens end. The end of the first annular part forms at least one elastic part through a deformation groove, and the elastic part is provided with a protruding structure on the outer side of the movable end.

[0010] Furthermore, the cover extends outward from the side away from the opening end to form a second annular portion. The second annular portion is sleeved around the periphery of the first annular portion. The outer wall of the second annular portion forms a positioning hole, and the protruding structure abuts, slides, and engages in the positioning hole.

[0011] Furthermore, the light-shielding plate has a U-shaped cross-section, and the light-shielding plate covers the outside of the opening end of the cover. The top two sides of the light-shielding plate are rotatably connected to the cover via a rotating shaft.

[0012] Furthermore, the positioning structure includes an elastic snap-fit ​​part and a positioning protrusion, the elastic snap-fit ​​part and the positioning protrusion are respectively provided on the upper and lower sides of the cover and the light shield, wherein the elastic snap-fit ​​part has a hook-shaped structure, and its hook end snaps with the positioning protrusion on the adjacent side.

[0013] Furthermore, the light-shielding soft film has a triangular structure, with its two sides fixedly connected to the inner sides of the cover and the light-shielding plate, respectively. An easy-folding seam is also provided in the middle of the light-shielding soft film, through which the light-shielding soft film is folded and stored in the cover.

[0014] The beneficial effects of the field shading device for a surveying instrument proposed in this utility model are as follows: The utility model has a first annular part and a second annular part respectively provided at the lens end of the main body of the surveying instrument and on the side of the cover. The first annular part and the second annular part are connected in an inner and outer sleeve. After the sleeve is connected, at least one of the protruding structures will also be engaged in the positioning hole under the action of the elastic part to realize the function of fixing the cover. Similarly, the cover can be disassembled after pressing the protruding structure to disengage it from the positioning hole. This achieves the functions of convenient disassembly and assembly of the cover and convenient carrying of the surveying instrument. In addition, the shading plate and the cover are also fixed by the positioning structure to avoid the situation where the shading plate is not fixed and thus affects the use of the surveying instrument. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the elastic structure of this utility model;

[0017] Figure 3 for Figure 2 A magnified structural diagram of area A;

[0018] Figure 4 This is a schematic diagram of the positioning structure of this utility model.

[0019] In the diagram: 1. Main body of the surveying instrument; 11. First annular part; 2. Cover; 21. Second annular part; 22. Positioning hole; 3. Elastic structure; 31. Elastic part; 32. Deformation groove; 33. Protruding structure; 4. Light shield; 5. Positioning structure; 51. Elastic snap-fit ​​part; 52. Positioning protrusion; 6. Light shielding soft film; 61. Easy-fold seam. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A field shading device for a surveying instrument is installed on the lens end of the main body 1 of the surveying instrument. It includes a cover 2, which is detachably connected to the lens end of the main body 1 of the surveying instrument via an elastic structure 3. A light-shielding plate 4 is rotatably connected to the open end of the cover 2. A positioning structure 5 is provided between the light-shielding plate 4 and the cover 2. The positioning structure 5 is used to fix the light-shielding plate 4.

[0022] Among them, the cover 2 is provided with a light-blocking soft film 6 between the two sides of the opening end and the light-blocking plate 4.

[0023] Furthermore, the elastic structure 3 includes an elastic part 31. The main body 1 of the surveying instrument is fixedly connected to a first annular part 11 at the lens end. The end of the first annular part 11 forms at least one elastic part 31 through a deformation groove 32. The elastic part 31 is provided with a protruding structure 33 on the outer side of the movable end.

[0024] Furthermore, the cover 2 extends outward from the side away from the opening end to form a second annular portion 21. The second annular portion 21 is sleeved around the periphery of the first annular portion 11. The outer wall of the second annular portion 21 forms a positioning hole 22. The protruding structure 33 abuts, slides, and engages in the positioning hole 22.

[0025] In this embodiment, the first annular portion 11 and the lens end of the surveying instrument body 1 can be connected by screw fixing. The first annular portion 11 is preferably made of a material with deformation capability such as rubber or plastic, and the end of the protruding structure 33 is arc-shaped or circular.

[0026] Specifically, when the first annular part 11 and the second annular part 21 are sleeved together, the protruding structure 33 slides against the second annular part 21 under the action of the elastic part 31. When the protruding structure 33 corresponds to the positioning hole 22, the elastic part 31 restores its deformation and drives the protruding structure 33 to engage in the positioning hole 22, thereby achieving the function of fixing the cover 2.

[0027] Furthermore, the outer edge of the positioning hole 22 has a chamfered structure so that the protruding structure 33 can be disengaged from the positioning hole 22 by pressing with a finger.

[0028] More specifically, the light-shielding plate 4 has a U-shaped cross-section, and the light-shielding plate 4 is placed on the outside of the opening end of the cover body 2. The top two sides of the light-shielding plate 4 are rotatably connected to the cover body 2 through a rotating shaft.

[0029] In general, the positioning structure 5 includes an elastic snap-fit ​​part 51 and a positioning protrusion 52. The elastic snap-fit ​​part 51 and the positioning protrusion 52 are respectively provided on the upper and lower sides of the cover 2 and the light shield 4. The elastic snap-fit ​​part 51 has a hook-shaped structure, and its hook end snaps with the positioning protrusion 52 on the adjacent side.

[0030] In this embodiment, as Figure 4 As shown, the elastic snap-fit ​​part 51 is an elastic structure, and it is provided with a deformation groove at the hook end. Under the action of its own elasticity and deformation groove, the elastic snap-fit ​​part 51 is engaged with the protruding structure 33 by resisting sliding, thereby achieving the function of fixing the light shield 4.

[0031] Specifically, the elastic snap-fit ​​part 51 and the positioning protrusion 52 are respectively provided on the upper and lower sides of the cover 2 and the light shield 4, so that the light shield 4 can be fixed to the cover 2 in both open and closed states, so as to prevent affecting the normal use of the surveying instrument.

[0032] Finally, the light-shielding soft film 6 has a triangular structure, with its two sides fixedly connected to the inner sides of the cover 2 and the light-shielding plate 4, respectively. A folding seam 61 is also provided in the middle of the light-shielding soft film 6, through which the light-shielding soft film 6 is folded and stored in the cover 2.

[0033] In some embodiments, the light-shielding soft film 6 is preferably made of materials such as polyurethane. Both the light-shielding soft film 6 and the light-shielding plate 4 are stacked to block light penetration by means of multi-layer ink coating, etc., to achieve the light-shielding effect.

[0034] Specifically, when the light-shielding plate 4 is closed, the light-shielding soft film 6 is folded and stored under the action of the easy-folding seam 61. Similarly, when the light-shielding plate 4 is opened and fixed to the cover 2 through the elastic snap part 51, the light-shielding soft film 6 is unfolded by the stretching action to block side light.

[0035] Working method: Under normal circumstances, the light shield 4 is flipped and installed on the lens end of the surveying instrument body 1 to protect the lens. Then, the elastic locking part 51 is moved so that its hook end deforms and disengages from the positioning protrusion 52, and the light shield 4 can be flipped 90 degrees. The light shield 4 is fixed by locking the positioning protrusion 52 at the other end with the elastic locking part 51 at the other end of the cover 2. In addition, the light shielding soft film 6 will be stretched to block side light.

[0036] After pressing the protruding structure 33 to disengage it from the positioning hole 22, the first annular part 11 and the second annular part 21 can be separated, thus separating the main body 1 of the surveying instrument from the cover 2. Similarly, when the first annular part 11 and the second annular part 21 are fitted together, the protruding structure 33 slides against the second annular part 21 under the action of the elastic part 31. When the protruding structure 33 corresponds to the positioning hole 22, the elastic part 31 restores its deformation and drives the protruding structure 33 to engage in the positioning hole 22, thus fixing the cover 2.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A field shading device for a surveying instrument, installed on the lens end of the main body (1) of the surveying instrument, characterized in that: Includes a cover (2), which is detachably connected to the lens end of the surveying instrument body (1) via an elastic structure (3). A light shield (4) is rotatably connected to the open end of the cover (2). A positioning structure (5) is provided between the light shield (4) and the cover (2), and the positioning structure (5) is used to fix the light shield (4). Among them, the cover (2) is provided with a light-shielding soft film (6) between the two sides of the opening end and the light-shielding plate (4).

2. The field shading device for a surveying instrument according to claim 1, characterized in that: The elastic structure (3) includes an elastic part (31). The main body (1) of the surveying instrument is fixedly connected to a first annular part (11) at the lens end. The end of the first annular part (11) forms at least one elastic part (31) through a deformation groove (32). The elastic part (31) has a protruding structure (33) on the outer side of the movable end.

3. The field shading device for a surveying instrument according to claim 2, characterized in that: The cover (2) extends outward from the side away from the opening end to form a second annular part (21). The second annular part (21) is sleeved on the periphery of the first annular part (11). The outer wall of the second annular part (21) forms a positioning hole (22). The protruding structure (33) abuts, slides and engages in the positioning hole (22).

4. The field shading device for a surveying instrument according to claim 1, characterized in that: The light-shielding plate (4) has a U-shaped cross-section. The light-shielding plate (4) covers the outside of the opening end of the cover (2), and the top two sides of the light-shielding plate (4) are rotatably connected to the cover (2) through a rotating shaft.

5. The field shading device for a surveying instrument according to claim 1, characterized in that: The positioning structure (5) includes an elastic snap-fit ​​part (51) and a positioning protrusion (52). The elastic snap-fit ​​part (51) and the positioning protrusion (52) are respectively provided on the upper and lower sides of the cover (2) and the light shield (4). The elastic snap-fit ​​part (51) has a hook-shaped structure, and its hook end is snapped with the positioning protrusion (52) on the adjacent side.

6. The field shading device for a surveying instrument according to claim 1, characterized in that: The light-shielding soft film (6) has a triangular structure, with its two sides fixedly connected to the inner sides of the cover (2) and the light-shielding plate (4) respectively. A folding seam (61) is also provided in the middle of the light-shielding soft film (6). The light-shielding soft film (6) is folded through the folding seam (61) and stored in the cover (2).

Images