Rotor track sensor

Abstract

The utility model discloses a rotor track sensor, which comprises a shell, an optical lens assembly and a locking assembly, and is characterized in that the shell is internally provided with an optical sensor; the optical lens assembly is movably arranged in the shell, and the distance between the optical lens assembly and the optical sensor is adjusted through movement; the locking assembly clamps the optical lens assembly through elastic deformation so as to lock the position of the optical lens assembly. The optical lens assembly can move in the shell, so that the distance between the optical lens assembly and the optical sensor is finely adjusted, the optical sensor is located on the focal plane of the optical lens assembly, and normal work of the rotor track sensor is guaranteed. When the optical sensor is located on the focal plane of the optical lens assembly, the locking assembly clamps the optical lens assembly through elastic deformation, so that the position of the optical lens assembly is locked, and the position adjusting precision of the optical lens assembly is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection equipment, in particular to a rotor trajectory sensor. BACKGROUND

[0002] The rotor trajectory sensor is mainly used for measuring the main rotor cone value of a helicopter on the ground and in the air. An optical system is used to convert the cone value of a rotor blade into a corresponding pulse signal. A supporting device collects and processes the pulse signal to calculate the cone value of each blade. Helicopter maintenance personnel adjust the rotor cone of the helicopter according to the data.

[0003] The cone measurement accuracy of the rotor trajectory sensor is due to the fact that the photoelectric sensor on the signal processing board can be correctly installed on the focal plane of the optical lens. Therefore, it is very important to finely adjust the position of the optical lens. However, there are multiple structural parts in the rotor trajectory sensor for fixing the optical lens and the signal processing board. Due to the cumulative effect of the machining tolerance and assembly tolerance of the multiple parts, it is difficult to ensure that the photoelectric sensor on the signal processing board is on the focal plane of the optical lens.

[0004] Currently, the optical lens of similar products is fixed in a position that cannot be adjusted in the product. The installation and fixation mainly rely on the structure inside the product shell or other auxiliary devices, which has problems such as inaccurate positioning and high machining precision of parts. CONTENT OF THE INVENTION

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a rotor trajectory sensor which can accurately fine-tune the distance between the optical lens assembly and the optical sensor and ensure that the photoelectric sensor is on the focal plane of the optical lens assembly.

[0006] According to the first aspect of the rotor trajectory sensor of the present application, the rotor trajectory sensor comprises a shell, an optical lens assembly and a locking assembly. The optical sensor is installed inside the shell. The optical lens assembly is movably arranged inside the shell. The distance between the optical lens assembly and the optical sensor is adjusted by moving the optical lens assembly. The locking assembly clamps the optical lens assembly by elastic deformation to lock the position of the optical lens assembly.

[0007] According to the rotor trajectory sensor of the present application, the optical lens assembly can move inside the shell to fine-tune the distance between the optical lens assembly and the optical sensor, so that the optical sensor is on the focal plane of the optical lens assembly, ensuring the normal operation of the rotor trajectory sensor. After the optical sensor is on the focal plane of the optical lens assembly, the locking assembly clamps the optical lens assembly by elastic deformation to lock the position of the optical lens assembly, ensuring the position adjustment accuracy of the optical lens assembly.

[0008] According to some embodiments of the present application, the locking assembly comprises a locking ring, the locking ring is sleeved outside the optical lens assembly, a notch is formed on the circumference of the locking ring, and the locking ring clamps the optical lens assembly through elastic deformation.

[0009] According to some embodiments of the present application, the locking assembly further comprises a ring buckle, the ring buckle is sleeved outside the locking ring, and the ring buckle is used for pressing the locking ring to drive the locking ring to elastically deform towards the optical lens assembly.

[0010] According to some embodiments of the present application, an outer wall of the locking ring is provided with a first outer thread, an inner wall of the ring buckle is provided with a first inner thread, and the locking ring and the ring buckle are threadedly connected through the first outer thread and the first inner thread.

[0011] According to some embodiments of the present application, an outer wall of the locking ring is provided with a first inclined matching part, an inner wall of the ring buckle is provided with a second inclined matching part, and the second inclined matching part presses the locking ring through profile matching with the first inclined matching part.

[0012] According to some embodiments of the present application, an inner part of the shell is provided with a partition structure, the locking ring is fixedly connected to the partition structure, the optical lens assembly comprises an optical lens fixing piece, and the optical lens fixing piece is threadedly connected with the partition structure.

[0013] According to some embodiments of the present application, an outer wall of the optical lens fixing piece is provided with a contact part, and the optical lens fixing piece contacts an inner wall of the locking ring through the contact part.

[0014] According to some embodiments of the present application, the optical lens assembly further comprises a lens and a compression ring arranged inside the optical lens fixing piece, an inner wall of the optical lens fixing piece is provided with a protruding part, and the compression ring and the protruding part clamp the lens.

[0015] According to some embodiments of the present application, an inner wall of the optical lens fixing piece is provided with a third inner thread, an outer wall of the compression ring is provided with a third outer thread, and the optical lens fixing piece and the compression ring are threadedly connected through the third inner thread and the third outer thread.

[0016] According to some embodiments of the present application, the optical lens assembly further comprises a buffer component, and the buffer component is arranged between the lens and the protruding part.

[0017] Additional aspects and advantages of the present application will be in part apparent and in part expressly stated in the description that follows. BRIEF DESCRIPTION OF DRAWINGS

[0018] The application will be further illustrated below in conjunction with the accompanying drawings and examples. It should be noted that the examples embodied in the accompanying drawings are exemplary and are only used to explain the application, and cannot be understood as a limitation of the application.

[0019] Figure 1 is a structural schematic diagram of a rotor trajectory sensor according to an embodiment of the application;

[0020] Figure 2 is an exploded view of a rotor trajectory sensor according to an embodiment of the application;

[0021] Figure 3 is a structural schematic diagram of a housing in a rotor trajectory sensor according to an embodiment of the application;

[0022] Figure 4 is a sectional view of a housing in a rotor trajectory sensor according to an embodiment of the application;

[0023] Figure 5 is a sectional view of a rotor trajectory sensor according to an embodiment of the application;

[0024] Figure 6 is a sectional view of a rotor trajectory sensor according to an embodiment of the application; Figure 5 is a local enlarged view of part A in a rotor trajectory sensor according to an embodiment of the application;

[0025] Figure 7 is a sectional view of a rotor trajectory sensor according to an embodiment of the application;

[0026] Figure 8 is a sectional view of a rotor trajectory sensor according to an embodiment of the application.

[0027] Reference signs:

[0028] Housing 100; signal processing board 101; optical sensor 102; partition structure 103;

[0029] Optical lens assembly 200; optical lens fixing member 201; engraved line 2011; abutting portion 2012; protruding portion 2013; lens 202; compression ring 203; buffer member 204;

[0030] Locking assembly 300; locking ring 301; notch 3011; ring buckle 302; groove 3021; first inclined matching portion 303; second inclined matching portion 304. DETAILED DESCRIPTION

[0031] Embodiments of the application will be described in detail below with reference to the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The examples described below by reference to the accompanying drawings are exemplary and are only used to explain the application, and cannot be understood as a limitation of the application.

[0032] In the description of the application, it needs to be understood that if the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0033] In the description of the application, if several meanings are one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described that the first, second is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0034] In the description of the application, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example: it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0035] In the description of the application, if the description of the terms "one embodiment", "some embodiments", "one example", "some examples", "some embodiments", "illustrative embodiments", "example", "specific example", "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application. In the description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0036] As shown in Figure 1 and Figure 2 The embodiment of the application provides a rotor trajectory sensor, which comprises a shell 100, an optical lens assembly 200 and a locking assembly 300.

[0037] An optical sensor 102 and an optical lens assembly 200 are installed inside the housing 100, with a certain distance between them. Furthermore, the optical lens assembly 200 can move within the housing 100 to adjust the distance between the optical sensor 102 and the optical lens assembly 200, ensuring that the optical sensor 102 is positioned on the focal plane of the optical lens assembly 200.

[0038] When the optical sensor 102 is at the focal plane of the optical lens assembly 200, the locking component 300 is used to lock the position of the optical lens assembly 200 to ensure that the optical lens assembly 200 is maintained in the current position.

[0039] The contents of this application are described in detail below with reference to specific embodiments. It should be noted that the following description is merely illustrative and not a specific limitation of this application.

[0040] like Figure 3 and Figure 4 As shown, in some examples, the housing 100 of the rotor trajectory sensor is cylindrical, the optical lens assembly 200 is also cylindrical, and the locking assembly 300 is annular. The housing 100 serves as the main support for the entire rotor trajectory sensor, providing mounting and fixing positions for each component and part, thus integrating them into a whole.

[0041] Furthermore, the inner cavity sidewall of the housing 100 is provided with a fixing post, which is used to install the signal processing board 101 equipped with the optical sensor 102.

[0042] Specifically, the fixing post extends a certain distance into the internal space of the housing 100, and the fixing post is provided with a connection hole. The signal processing board 101 is provided with a hole structure corresponding to the position of the connection hole. The fastener can pass through the hole structure and be connected to the connection hole, thereby completing the installation of the signal processing board 101 inside the housing 100.

[0043] Meanwhile, the optical lens assembly 200 is movably disposed inside the housing 100, and the optical lens assembly 200 faces the signal processing board 101 on which the optical sensor 102 is provided. Therefore, the optical lens assembly 200 can be moved closer to or further away from the signal processing board 101 until the optical sensor 102 is adjusted to the focal plane position of the optical lens assembly 200.

[0044] In addition, after the optical sensor 102 is adjusted to the focal plane position of the optical lens assembly 200, it is necessary to fix the position of the optical lens assembly 200 so that the optical lens assembly 200 remains in the current position to ensure that the rotor trajectory sensor continues to function. Therefore, the locking assembly 300 is used to lock the position of the optical lens assembly 200.

[0045] Specifically, the locking assembly 300 can be elastically deformed to clamp the optical lens assembly 200, and the optical lens assembly 200 clamped by the locking assembly 300 can be kept at the current position.

[0046] In some examples, as shown in Figure 5 The locking assembly 300 includes a locking ring 301, which is in the shape of a circular ring and matches the shape of the optical lens assembly 200, so as to be sleeved on the outside of the optical lens assembly 200.

[0047] The side wall of the locking ring 301 is provided with a plurality of notches 3011, which extend to the end of the locking ring 301. The notches 3011 can reduce the structural strength of the locking ring 301, so that the remaining solid part between adjacent notches 3011 can be elastically deformed inward, that is, the remaining solid part can be close to the optical lens assembly 200 through elastic deformation, so as to facilitate the locking ring 301 to exert a clamping force on the optical lens assembly 200.

[0048] Specifically, the notches 3011 are evenly distributed in the circumferential direction to ensure that the elastic deformation ability of the locking ring 301 at each position is consistent.

[0049] In some examples, the locking assembly 300 further includes a ring buckle 302, which can exert a pressing force on the locking ring 301, so as to facilitate the locking ring 301 to clamp the optical lens assembly 200 inside through elastic deformation. The ring buckle 302 is sleeved on the outside of the locking ring 301, so that the locking ring 301 is between the optical lens assembly 200 and the ring buckle 302.

[0050] In some examples, the locking ring 301 is connected to the housing 100 to prevent the locking ring 301 from falling off. At the same time, the ring buckle 302 also needs to have a connection relationship with the locking ring 301, so as to prevent the ring buckle 302 from falling off the locking ring 301, and facilitate the ring buckle 302 to continuously exert a pressing force on the locking ring 301.

[0051] Specifically, the outer wall of the locking ring 301 is provided with a first external thread, and the inner wall of the ring buckle 302 is provided with a first internal thread. The first external thread and the first internal thread are engaged with each other, so that the locking ring 301 and the ring buckle 302 are threadedly connected.

[0052] It can be understood that, since the position of the locking ring 301 is fixed, the ring buckle 302 will not drive the locking ring 301 during rotation, that is, the ring buckle 302 and the locking ring 301 rotate relatively. Under the limitation of the first external thread and the first internal thread, the ring buckle 302 can move axially relative to the locking ring 301, and exert a pressing force on the locking ring 301 during the axial relative movement.

[0053] In addition, the end surface of the ring buckle 302 is provided with a plurality of grooves 3021, which can be used as force fulcrums for screwing the ring buckle 302. Specifically, the grooves 3021 are two and symmetrical to each other.

[0054] In some examples, as shown in Figure 6 The outer wall of the locking ring 301 is provided with a first inclined matching part 303, and the inner wall of the ring buckle 302 is provided with a second inclined matching part 304. The first inclined matching part 303 and the second inclined matching part 304 form a profile matching, which facilitates the ring buckle 302 to exert a pressing force on the locking ring 301 during movement.

[0055] Specifically, on the outer wall of the locking ring 301, the first outer thread is arranged at the middle part, and the first inclined matching part 303 is located at the end part close to the ring buckle 302 and is a certain distance away from the first outer thread. It can be understood that the notch 3011 on the side wall of the locking ring 301 also extends to this position. The first inclined matching part 303 gradually decreases in radial size in the direction away from the first outer thread.

[0056] At the same time, on the inner wall of the ring buckle 302, the first inner thread is arranged at the position close to the end part, and the second inclined matching part 304 is located at the position close to the other end of the ring buckle 302 and is a certain distance away from the first inner thread. Moreover, the second inclined matching part 304 gradually decreases in radial size in the direction close to the first inner thread, which facilitates the second inclined matching part 304 to match the first inclined matching part 303. Therefore, when the ring buckle 302 moves, it can provide a gradually increasing pressing force to the locking ring 301, facilitating the elastic deformation of the locking ring 301.

[0057] It can be understood that the inner diameter of the largest diameter position of the second inclined matching part 304 is greater than the outer diameter of the vertical circular ring of the locking ring 301, and the inner diameter of the smallest diameter position of the second inclined matching part 304 is smaller than the outer diameter of the vertical circular ring of the locking ring 301. Moreover, the inclination angles of the first inclined matching part 303 and the second inclined matching part 304 are consistent, which facilitates a larger contact area when the two are matched, so as to ensure smooth matching.

[0058] In some examples, as shown in Figure 7 and Figure 8 The inner part of the shell 100 is provided with a partition structure 103, and the locking ring 301 is fixedly connected to the partition structure 103 by a fastener.

[0059] The optical lens assembly 200 comprises an optical lens fixing member 201, an outer wall of the optical lens fixing member 201 is provided with a second external thread, and the partition structure 103 is provided with a connecting hole for mounting the optical lens fixing member 201, an inner wall of the connecting hole is provided with a second internal thread, the second external thread and the second internal thread are engaged with each other, so that the optical lens fixing member 201 is threadedly connected with the partition structure 103.

[0060] It can be understood that the optical lens fixing member 201 is rotated in the clockwise or counterclockwise direction, so that the optical lens assembly 200 is moved and adjusted along the axis direction of the shell 100, and the optical sensor 102 is adjusted to the focal plane of the optical lens assembly 200.

[0061] In addition, an outer wall of the optical lens fixing member 201 is processed with a scale line 2011 for indicating the rotation angle.

[0062] In some examples, the outer wall of the optical lens fixing member 201 is provided with a resisting portion 2012 which protrudes from the outer wall of the optical lens fixing member 201, and the resisting portion 2012 is used for contacting the inner wall of the locking ring 301. Therefore, the locking ring 301 clamps the resisting portion 2012 in the process of elastic deformation, so as to lock the position of the optical lens fixing member 201. Specifically, the inner wall of the locking ring 301 and the resisting portion 2012 are in clearance fit.

[0063] In some examples, the optical lens assembly 200 further comprises a lens 202 and a compression ring 203, the focal plane of the optical lens assembly 200 is the focal plane of the lens 202, and the compression ring 203 is used for fixing the position of the lens 202.

[0064] The optical lens fixing member 201 is a cylindrical structure, and the lens 202 and the compression ring 203 are arranged in the interior of the optical lens fixing member 201.

[0065] Further, an inner wall of the optical lens fixing member 201 is provided with a protruding portion 2013 which extends to the middle part of the optical lens fixing member 201, so that the inner diameter defined by the protruding portion 2013 is smaller than the diameter of the lens 202, and the lens 202 is blocked.

[0066] Meanwhile, the compression ring 203 is arranged at the opposite end of the lens 202 which contacts the protruding portion 2013, so that the compression ring 203 and the protruding portion 2013 clamp the lens 202, thereby ensuring the stability of the position of the lens 202.

[0067] It can be understood that the compression ring 203 also needs to be positioned in the interior of the optical lens fixing member 201, so as to ensure the continuity of the clamping action of the compression ring 203 and the protruding portion 2013 on the lens 202.

[0068] In some examples, to ensure the position of the compression ring 203 inside the optical lens fixing member 201 is stable, the inner wall of the optical lens fixing member 201 is provided with a third inner thread, the outer wall of the compression ring 203 is provided with a third outer thread, and the third inner thread and the third outer thread are engaged with each other, so that the compression ring 203 is threadedly connected with the optical lens fixing member 201.

[0069] In some examples, the optical lens assembly 200 further comprises a buffer component 204, which can be a ring-shaped rubber pad. The buffer component 204 is arranged between the lens 202 and the convex portion 2013, so as to avoid the lens 202 directly contacting the convex portion 2013, thereby protecting the lens 202.

[0070] In actual implementation, first, the locking ring 301 and the signal processing board 101 are fixedly installed in the shell 100 of the rotor trajectory sensor by means of screws or other fasteners, the optical lens assembly 200 is rotated clockwise or counterclockwise through thread cooperation with the shell 100, the distance between the optical lens assembly 200 and the optical sensor 102 on the signal processing board 101 is adjusted, so that the optical sensor 102 falls on the focal plane of the lens 202, then the ring buckle 302 is twisted by means of the locking tool, when the ring buckle 302 is screwed with the locking ring 301, the inner ring top necking chamfer of the ring buckle 302 will extrude the part of the locking ring 301 provided with the notch 3011, so that the part is elastically deformed inward, and then the optical lens fixing member 201 is locked, so that the optical lens assembly 200 is locked and fixed to the shell 100.

[0071] When it is necessary to adjust the distance between the optical lens assembly 200 and the optical sensor 102 on the signal processing board 101, the ring buckle 302 can be loosened, the part of the locking ring 301 provided with the notch 3011 is reset, the optical lens assembly 200 and the locking ring 301 form clearance cooperation again, the optical lens assembly 200 can be freely rotated to realize axial translation of the optical lens, the numerical value of the rotation and translation of the optical lens assembly 200 can be indicated by the angle scale 2011 on the surface of the optical lens assembly 200 to be finely adjusted, so that the distance between the optical lens assembly 200 and the optical sensor 102 on the signal processing board 101 can be finely adjusted through repeated operations.

[0072] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A rotor track sensor, characterized by, The application relates to a camera lens locking device. The camera lens locking device comprises a housing, an optical sensor installed in the housing, an optical lens assembly movably arranged in the housing, and a locking assembly. The locking assembly comprises a locking ring, which is sleeved on the outside of the optical lens assembly and has a notch in the periphery. The locking assembly further comprises a ring buckle, which is sleeved on the outside of the locking ring and is used for pressing the locking ring to drive the locking ring to elastically deform towards the optical lens assembly.

2. The rotor track sensor of claim 1, wherein, The outer wall of the locking ring is provided with a first external thread, and the inner wall of the ring buckle is provided with a first internal thread.

3. The rotor track sensor of claim 2, wherein, The outer wall of the locking ring is provided with a first inclined matching part, and the inner wall of the ring buckle is provided with a second inclined matching part.

4. The rotor track sensor of claim 3, wherein, The inner wall of the optical lens fixing member is provided with a third internal thread, and the outer wall of the pressing ring is provided with a third external thread.

5. The rotor track sensor of claim 3, wherein, The optical lens assembly further comprises a buffer component arranged between the lens and the protruding part.

6. The rotor track sensor of claim 2, wherein, ​ 7. The rotor track sensor of claim 6, wherein, ​ 8. The rotor track sensor of claim 6, wherein, ​ 9. The rotor track sensor of claim 8, wherein, ​ 10. The rotor track sensor of claim 8, wherein, ​

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