Dustproof device for north seeker

Abstract

The utility model relates to the technical field of north seekers, and particularly discloses a north seeker dustproof device which comprises a box body, a fixing frame and a positioning frame connected to the bottom of the box body, and the positioning frame is connected with a mounting plate through bolts. Mounting grooves are formed in the two sides of the box body, a plurality of ventilation holes are formed in the two sides of each mounting groove, the ventilation holes communicate with an inner cavity of the box body, a second filter screen capable of being inserted into the mounting grooves and a first filter screen arranged on the outer side of the box body are connected to the fixing frame, and the bottom, close to one side of the first filter screen, of the second filter screen is connected with a collecting frame; the box body is connected with a positioning piece for fixing the position of the second filter screen in the mounting groove; the ventilation holes are formed in the two sides of the box body, the first filter screen and the second filter screen are arranged at the ventilation holes in a matched mode to intercept dust, dust entering the box body and accumulated on the north seeker is reduced, and the influence on the measurement accuracy and stability of the north seeker is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of north-finders, in particular to a dust-proof device for north-finders. Background Art

[0002] A north finder is an instrument that can autonomously determine the true north direction of the attached carrier. According to different working principles and application scenarios, north finders can be divided into many types, such as gyroscopic north finders, geomagnetic north finders, astronomical north finders, etc. Among them, the gyroscopic north finder is a more common one, which determines the true north direction by measuring the angular velocity of the earth's rotation. The setting of the dustproof device can reduce dust accumulation, poor heat dissipation, poor contact and other problems.

[0003] The existing patent announcement number CN220187721U discloses a north-seeking instrument dust-proof device, which includes a north-seeking instrument body and a base fixed at the bottom end of the north-seeking instrument body, the side wall of the north-seeking instrument body is equidistantly provided with heat dissipation grooves, and the north-seeking instrument body is symmetrically fixed with mounting plates located at both ends of the heat dissipation grooves, a connecting groove is provided between the two mounting plates, and the side walls of the two mounting plates are both provided with positioning grooves, the connecting grooves are matched with dust-proof plates, both ends of the dust-proof plates are fixed with connecting parts, and the side walls of the two connecting parts are symmetrically provided with extension grooves. The expansion slot is elastically plugged with a card plate connected to the positioning slot, and buttons protruding from the side wall of the mounting plate are slidably plugged into the two positioning slots; the mounting plates located at both ends of the heat dissipation slot are symmetrically fixed on the side wall of the north-finder body, and a dustproof plate is plugged into the connecting slot arranged between the two mounting plates, and the card plate elastically plugged into the side wall of the dustproof plate is plugged into the positioning slot provided on the side wall of the mounting plate, thereby keeping it fixed between the two mounting plates, and dust is blocked by a dustproof filter element embedded and fixed in the dustproof plate.

[0004] The above dustproof device can prevent dust and protect the north finder during use. Although dust can be prevented during heat dissipation, the ventilation effect needs to be improved, and some dust falls when the dustproof plate is removed, affecting the overall use of the north finder and the dustproof device, which needs to be improved. In view of the above problems, a dustproof device for a north finder is proposed. Utility Model Content

[0005] The utility model aims to provide a dust-proof device for a north-finder to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A dust-proof device for a north-finder, comprising a box body, a fixing frame and a positioning frame connected to the bottom of the box body, wherein the positioning frame is connected to a mounting plate by bolts;

[0008] Both sides of the box body are provided with mounting grooves, and both sides of the mounting grooves are provided with a plurality of ventilation holes, and the ventilation holes are connected with the inner cavity of the box body. The fixing frame is connected with a second filter screen that can be inserted into the mounting groove and a first filter screen placed outside the box body, and the bottom of the second filter screen near the first filter screen is connected with a collecting frame;

[0009] The box body is connected with a positioning piece for fixing the second filter screen in the installation groove;

[0010] A rectangular hole is provided on one side of the box body, a protective plate connected to the box body is provided on one side of the rectangular hole, and a through hole is provided on the protective plate.

[0011] In an optional scheme: the positioning member includes a positioning rod and a lever connected to one side of the positioning rod, a transverse groove for moving the positioning rod is provided in the box body, one side of the transverse groove is connected to a movable groove for sliding the lever, the lever is connected to a spring telescopic rod at a side away from the positioning rod, the spring telescopic rod is connected to the inner wall of the transverse groove at one end away from the lever, and a positioning hole for plugging in the end of the positioning rod is provided on one side of the second filter.

[0012] In an optional solution: the outer wall of the box body is provided with a groove connected to the rectangular hole, the protective plate is threadedly connected to a positioning bolt, and the groove is provided with a plurality of positioning screw holes that cooperate with the thread of the positioning bolt.

[0013] In an optional solution, the inner diameter of the mesh holes on the first filter screen is greater than the inner diameter of the mesh holes on the second filter screen.

[0014] In an optional solution: the height of the groove is greater than the height of the protective plate.

[0015] In an optional solution: an observation window and a rubber button area are provided on the box body.

[0016] In an optional solution: a plurality of sector-shaped rubber sheets are connected in the through hole.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] In the utility model, ventilation holes are arranged on both sides of the box body, and the first filter screen and the second filter screen are arranged at the ventilation holes to cooperate with each other to intercept dust, thereby reducing dust from entering the box body and accumulating on the north finder, thereby reducing the influence on the measurement accuracy and stability of the north finder;

[0019] In the utility model, a collection frame is provided on one side of the second filter screen. When intercepting during use and removing during cleaning, dust can fall into the collection frame due to operations such as shaking, which is convenient for subsequent cleaning and reduces the impact of dust falling into the device on use.

[0020] The arrangement of the rectangular hole and the through hole in the utility model facilitates the connection between the interface on the north finder and the outside, and is beneficial to the connection of the circuits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 It is a schematic diagram of the disassembly structure of the fixing frame and the box body of the utility model.

[0023] Figure 3 It is a structural schematic diagram of the protective plate setting in the utility model.

[0024] Figure 4 It is a schematic diagram of the structure of the protective plate and the box body being separated in the utility model.

[0025] Figure 5 It is a schematic diagram of the partial split structure of the utility model.

[0026] Figure 6 It is a structural schematic diagram of the collection frame arrangement in the utility model.

[0027] In the figure: 11, box body; 12, positioning frame; 13, mounting plate; 14, fixing frame; 15, mounting groove; 16, ventilation hole; 17, protective plate; 18, through hole; 19, positioning bolt; 20, groove; 21, rectangular hole; 22, positioning hole; 23, positioning rod; 24, lever; 25, spring telescopic rod; 26, movable groove; 27, first filter screen; 28, second filter screen; 29, collecting frame. DETAILED DESCRIPTION

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-Figure 6 In this embodiment, a dust-proof device for a north finder includes a box body 11, a fixing frame 14, and a positioning frame 12 connected to the bottom of the box body 11, wherein the positioning frame 12 is connected to a mounting plate 13 by bolts;

[0031] Both sides of the box body 11 are provided with mounting grooves 15, and both sides of the mounting grooves 15 are provided with a plurality of ventilation holes 16, and the ventilation holes 16 are communicated with the inner cavity of the box body 11. The fixing frame 14 is connected with a second filter screen 28 that can be inserted into the mounting grooves 15 and a first filter screen 27 placed outside the box body 11, and the bottom of the second filter screen 28 near the first filter screen 27 is connected with a collecting frame 29;

[0032] The box body 11 is connected with a positioning member for fixing the second filter screen 28 in the mounting groove 15;

[0033] A rectangular hole 21 is provided on one side of the box body 11, a protective plate 17 connected to the box body 11 is provided on one side of the rectangular hole 21, and a through hole 18 is provided on the protective plate 17;

[0034] In this embodiment, the north-finder can be placed in the box body 11 and the positioning frame 12. The ventilation holes 16 facilitate air flow, and the air can dissipate heat to the north-finder during flow. The first filter 27 and the second filter 28 can filter, and are convenient for subsequent removal and cleaning. When intercepting during use and removing during cleaning, dust may fall into the collection frame 29 due to shaking and other operations, which facilitates subsequent cleaning and reduces the impact of dust falling into the device on use.

[0035] In another embodiment, the positioning member includes a positioning rod 23 and a lever 24 connected to one side of the positioning rod 23, a transverse groove for the movement of the positioning rod 23 is provided in the box body 11, one side of the transverse groove is connected to a moving groove 26 for the sliding of the lever 24, the lever 24 is connected to a spring telescopic rod 25 at one side away from the positioning rod 23, and the spring telescopic rod 25 is connected to the inner wall of the transverse groove at one end away from the lever 24, and a positioning hole 22 for inserting the end of the positioning rod 23 is provided on one side of the second filter screen 28;

[0036] The positioning rod 23 can be moved horizontally in the transverse groove by the lever 24. When the lever 24 is away from the positioning hole 22, the spring telescopic rod 25 is pressed to release the limit on the second filter screen 28, making it convenient to remove the fixing frame 14 and facilitate the subsequent cleaning of the first filter screen 27 and the second filter screen 28.

[0037] In another embodiment, the outer wall of the box body 11 is provided with a groove 20 connected to the rectangular hole 21, and the protective plate 17 is threadedly connected to a positioning bolt 19, and the groove 20 is provided with a plurality of positioning screw holes threadedly matched with the positioning bolt 19; the position of the protective plate 17 can be fixed by the positioning bolt 19, and the height of the protective plate 17 can be adjusted according to the line interface on the north-finder so that the position of the through hole 18 can correspond to the interface on the north-finder, and then the position of the protective plate 17 is fixed. The protective plate 17 can block the rectangular hole 21, thereby reducing the connection between the inside of the box body 11 and the outside world, and does not affect the connection of the north-finder line.

[0038] In another embodiment, the inner diameter of the mesh on the first filter 27 is larger than the inner diameter of the mesh on the second filter 28; the ventilation holes 16 on both sides of the box body 11 facilitate ventilation inside the box body 11, and the first filter 27 and the second filter 28 can filter during ventilation to reduce dust accumulation on the north finder in the box body 11; the first filter 27 and the second filter 28 can be taken out and cleaned afterwards.

[0039] In another embodiment, the height of the groove 20 is greater than the height of the protective plate 17, and the protective plate 17 can slide up and down in the groove 20 to adjust its position; the protective plate 17 can be horizontally docked to a corresponding position in the groove 20 and fixed.

[0040] In another embodiment, the box body 11 is provided with an observation window and a rubber button area; the observation window may correspond to the screen of the north finder, the rubber button area may correspond to the buttons on the north finder, and the positions of the observation window and the rubber button area may be set according to actual needs.

[0041] In another embodiment, a plurality of sector-shaped rubber sheets are connected in the through hole 18 , and the rubber sheets are in contact with the interface.

[0042] The working principle of the utility model is as follows: the north finder can be placed in the box body 11 and the positioning frame 12, the ventilation holes 16 are convenient for air flow, the air can dissipate heat to the north finder during the flow, the first filter 27 and the second filter 28 can play a filtering role, and it is convenient to take out and clean it later. When intercepting during use and taking it out during cleaning, due to operations such as shaking, dust can fall into the collection frame 29, which is convenient for subsequent cleaning and reduces the impact of dust falling in the device on use;

[0043] According to the position of the north finder interface, the protective plate 17 is horizontally docked to the corresponding position in the groove 20, the through hole 18 corresponds to the interface, and then the protective plate 17 is fixed.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A dust-proof device for a north-finder, comprising a box body (11), a fixing frame (14) and a positioning frame (12) connected to the bottom of the box body (11), wherein the positioning frame (12) is connected to a mounting plate (13) by bolts; Features: Both sides of the box body (11) are provided with mounting grooves (15), and both sides of the mounting grooves (15) are provided with a plurality of ventilation holes (16), and the ventilation holes (16) are communicated with the inner cavity of the box body (11); the fixing frame (14) is connected with a second filter screen (28) which can be inserted into the mounting groove (15) and a first filter screen (27) arranged outside the box body (11); and the bottom of the second filter screen (28) close to the first filter screen (27) is connected with a collecting frame (29); The box body (11) is connected with a positioning member for fixing the second filter screen (28) in the installation groove (15); A rectangular hole (21) is provided on one side of the box body (11), a protective plate (17) connected to the box body (11) is provided on one side of the rectangular hole (21), and a through hole (18) is provided on the protective plate (17).

2. A dust-proof device for a north-finder according to claim 1, characterized in that: The positioning member comprises a positioning rod (23) and a lever (24) connected to one side of the positioning rod (23); a transverse groove for movement of the positioning rod (23) is provided in the box body (11); one side of the transverse groove is connected to a moving groove (26) for sliding the lever (24); a side of the lever (24) away from the positioning rod (23) is connected to a spring telescopic rod (25); one end of the spring telescopic rod (25) away from the lever (24) is connected to the inner wall of the transverse groove; and a positioning hole (22) for inserting the end of the positioning rod (23) is provided on one side of the second filter screen (28).

3. A dust-proof device for a north-finder according to claim 1, characterized in that: The outer wall of the box body (11) is provided with a groove (20) communicating with the rectangular hole (21); the protective plate (17) is threadedly connected to a positioning bolt (19); and the groove (20) is provided with a plurality of positioning screw holes threadably matched with the positioning bolt (19).

4. A dust-proof device for a north-seeking instrument according to claim 1, characterized in that: The inner diameter of the mesh holes on the first filter screen (27) is greater than the inner diameter of the mesh holes on the second filter screen (28).

5. The dust-proof device for a north-finder according to claim 3, characterized in that: The height of the groove (20) is greater than the height of the protection plate (17).

6. A dust-proof device for a north-finder according to claim 1, characterized in that: The box body (11) is provided with an observation window and a rubber button area.

7. A dust-proof device for a north-seeking instrument according to claim 1, characterized in that: A plurality of sector-shaped rubber sheets are connected in the through hole (18).

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