Anti-fracture connecting device of aviation lighting optical lens

Abstract

The invention provides an anti-fracture connecting device of an aviation lighting optical lens, the aviation lighting optical lens comprises a shell and a lens structure, the anti-fracture connecting device comprises a first connecting structure, the first connecting structure is used for fixing the lens structure on the shell, and the first connecting structure comprises a fixing structure and a mounting screw. The fixing structure comprises a first pressing face and a first limiting column located on the lower surface of the first pressing face, and the lower end face of the first limiting column makes contact with the supporting face of the edge of the shell. Mounting through holes for mounting screws to penetrate through are formed in the first pressing face and the first limiting column, and threaded holes matched with the mounting screws are formed in the supporting face. According to the anti-fracture connecting device, on the premise that the optical lens is in a limited installation space and under severe working conditions, the problem of fracture of an installation part in the using process can be prevented, and high reliability of an aviation lighting lamp in the whole life cycle of an airplane is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft lighting, and relates to an anti-cracking connection device for an aviation lighting optical lens. Background Art

[0002] The current traditional high-intensity, high-power aviation lighting fixtures, such as aircraft landing lights and taxi lights, all use LED light sources and optical lens designs. The optical lenses are made of special materials. During the installation and fixation of the optical lenses and the influence of harsh working conditions such as ejection, interception, rapid dive, and "cobra maneuver" during the flight of the aircraft, the installation parts of the optical lenses are prone to cracking.

[0003] In view of this, it is necessary to design an anti-fracture connection device that can meet the high reliability and high safety requirements of the optical lens, so as to solve the problem of fracture of the installation part of the optical lens of the traditional aviation lighting fixture during use. Summary of the invention

[0004] In order to solve the deficiencies of the prior art, the present invention discloses an anti-fracture connection device for an aviation lighting optical lens, which can prevent the technical problem of fracture caused by external force during the installation and use of the optical lens, and meets the high reliability and high safety requirements of the optical lens. The aviation lighting optical lens includes a housing and a lens structure, and the anti-fracture connection device includes a first connection structure, which is used to fix the lens structure on the housing, and includes a fixing structure and a mounting screw.

[0005] The fixing structure includes a first pressing surface and a first limiting column located on the lower surface of the first pressing surface, and the lower end surface of the first limiting column contacts the supporting surface of the edge of the shell. The first pressing surface and the first limiting column are provided with mounting through holes through which the mounting screws pass, and the supporting surface is provided with threaded holes matching the mounting screws.

[0006] During installation, first, the limit column passes through the through hole processed on the lens structure. When the lower surface of the limit column contacts the supporting surface, the lower surface of the first clamping surface contacts the upper surface of the lens structure; then, the mounting screw passes through the mounting through hole on the fixing structure and is screwed into the threaded hole of the supporting surface to fix the lens on the shell.

[0007] The present invention designs the first connection structure so that when the lens structure is fixed to the housing, the first pressing surface contacts the upper surface of the lens structure, thereby preventing the lens structure from being damaged by external forces during installation or operation.

[0008] In a feasible embodiment, the first pressing surface is a special-shaped pressing surface surrounded by a first pressing edge, a second pressing edge and a third pressing edge, the first pressing edge is conformal with the inner wall of the shell, and the second pressing edge and the third pressing edge are both in contact with the lens structure.

[0009] In a feasible embodiment, the connections between the first pressing edge and the second pressing edge, between the second pressing edge and the third pressing edge, and between the third pressing edge and the first pressing edge are all rounded. By rounding the connection positions, it is possible to prevent the fixed structure from causing damage to the lens structure and the shell due to vibration during operation.

[0010] In a feasible embodiment, the first connecting structure also includes two rubber pads, and the rubber pads are mounted on the first limiting column, one of the rubber pads is located between the first pressing surface and the lens structure, and the other rubber pad is located between the lens structure and the supporting surface. By arranging the rubber pads between the two contacting components, a shock-absorbing effect can be achieved to avoid damage caused by interaction between the components during vibration.

[0011] In an achievable embodiment, the first connection structure further includes two groups of adjustment washers, one group of which is located between the rubber pad and the first pressing surface, and the other group of which is located between the rubber pad and the support surface. By setting the adjustment washers, after the pre-tightening force is applied to the mounting screw, the end face of the first limiting column and the end face of the support surface are contacted and limited, so that the optical lens can always be kept in a pressed state, thereby preventing the problem of the installation part being broken due to uneven force and extreme working conditions.

[0012] The above-mentioned first connecting structure of the present invention is to fix the entire lens structure on the shell. In order to improve the stability of each lens, in an improved embodiment of the above-mentioned anti-breakage connecting device, the anti-breakage connecting device also includes a second connecting structure, and the second connecting structure is used to fix each lens in the lens structure in the shell.

[0013] In a feasible embodiment, the second connection structure includes a second clamping surface, a second limiting column and a threaded column whose diameters decrease successively from top to bottom, and a supporting member on the shell that matches each lens is provided with a mounting hole that matches the threaded column.

[0014] In a feasible embodiment, the second connection structure further includes a rubber pad and an adjustment pad.

[0015] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above-mentioned technical solutions adopted in the embodiments of this specification include at least the following: the anti-rupture connection device of the present invention, through the design of the first connection structure and the second connection structure, can prevent the problem of rupture of the installation part during use of the optical lens under the premise of limited installation space and harsh working conditions, thereby ensuring the high reliability of aviation lighting fixtures throughout the life cycle of the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A cross-sectional view of an aviation lighting optical lens disclosed in an embodiment of the present invention;

[0018] Figure 2 for Figure 1 An enlarged view of the first connection structure at position I in the middle;

[0019] Figure 3 A schematic diagram of a fixing structure disclosed in an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of a second connection structure disclosed in an embodiment of the present invention;

[0021] Figure 5 It is a schematic diagram of fixing the lens in the housing through the second connecting structure disclosed in the embodiment of the present invention;

[0022] Figure 6 A top view of the aviation lighting optical lens disclosed in an embodiment of the present invention;

[0023] Among them, 100, the first connecting structure; 200, the second connecting structure; 1, the fixing structure; 11, the first clamping surface; 111, the first clamping edge; 112, the second clamping edge; 113, the third clamping edge; 12, the first limiting column; 14, the mounting hole; 2, the rubber pad; 3, the adjustment gasket; 4, the mounting screw; 5, the lens structure; 6, the shell; 61, the supporting surface; 21, the second clamping surface; 22, the second limiting column; 23, the threaded column. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0025] The following describes the implementation methods of the present application through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and the features of the embodiments can be combined with each other in the absence of conflict. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0026] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the invention.

[0027] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0028] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present disclosure. The illustrations only show components related to the present disclosure rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0029] See also Figure 1 As shown, the aviation lighting optical lens includes a housing 6 and a lens structure 5. The lens structure 5 includes a plurality of lenses and an LED light source corresponding to each lens. The embodiment of the present invention discloses an anti-crack connection device for the aviation lighting optical lens. Figure 1 As shown, the anti-fracture connection device includes a first connection structure 100, and the first connection structure 100 is used to fix the lens structure 5 on the housing 6. In the embodiment of the present invention, see Figure 6As shown, a plurality of first connection structures 100 may be evenly arranged on the outer periphery of the housing 6 .

[0030] See also Figure 2 As shown, the first connection structure 100 includes a fixing structure 1 and a mounting screw 4 , and the lens structure 5 is fixed on the housing 6 through the cooperation of the fixing structure 1 and the mounting screw 4 .

[0031] Among them, see Figure 2 and Figure 3 As shown, the fixing structure 1 includes a first pressing surface 11 and a first limiting column 12 located on the lower surface of the first pressing surface 11, and the lower end surface of the first limiting column 12 contacts the support surface 61 at the edge of the housing 6. The first pressing surface 11 and the first limiting column 12 are provided with mounting through holes 14 through which the mounting screws 4 pass, and the support surface 61 is provided with threaded holes matching the mounting screws 4.

[0032] When the lens structure 5 is fixed to the housing 6 by the cooperation of the fixing structure 1 and the mounting screw 4, first, the first limiting column 12 is passed through the through hole processed on the lens structure 5, and when the lower surface of the first limiting column 12 contacts the support surface 61, the lower surface of the first pressing surface 11 contacts the upper surface of the lens structure 5; then, the mounting screw 4 passes through the mounting through hole 14 on the fixing structure 1 and is screwed into the threaded hole of the support surface 61 to fix the lens structure 5 to the housing 6. By designing the first connecting structure 100, when the lens structure 5 is fixed to the housing 6, the first pressing surface 11 contacts the upper surface of the lens structure 5, thereby preventing the lens structure 5 from being damaged by external force during installation or operation.

[0033] In one possible embodiment, see Figure 3 As shown, the first pressing surface 11 is a special-shaped pressing surface surrounded by a first pressing edge 111, a second pressing edge 112 and a third pressing edge 113, such as a triangular pressing surface, the first pressing edge 111 is conformal to the inner wall of the housing 6, and the second pressing edge 112 and the third pressing edge 113 are both in contact with the lens structure 5. In a specific implementation, the shapes of the first pressing surface 11, the second pressing edge 112 and the third pressing edge 113 are related to the shapes of the housing 6 and the lens structure 5, for example, Figure 6 As shown, when the housing 6 and the lens structure 5 are circular, the first pressing surface 11 is an arcuate surface, and the second pressing edge 112 and the third pressing edge 113 are both inclined to use arcuate surfaces to facilitate matching with the shapes of the housing 6 and the lens structure 5.

[0034] In one possible embodiment, see Figure 3As shown, the connections between the first clamping edge 111 and the second clamping edge 112, between the second clamping edge 112 and the third clamping edge 113, and between the third clamping edge 113 and the first clamping edge 111 are all rounded. By rounding the connection positions, the fixed structure 1 can be prevented from causing damage to the lens structure 5 and the shell 6 due to vibration during operation.

[0035] In one possible embodiment, see Figure 2 As shown, the first connection structure 100 also includes two rubber pads 2, and the rubber pads 2 are sleeved on the first limiting column 12, wherein one of the rubber pads 2 is located between the first pressing surface 11 and the lens structure 5, and the other rubber pad 2 is located between the lens structure 5 and the supporting surface 61. By arranging the rubber pad 2 between the two contacting parts, a shock-absorbing effect can be achieved to avoid damage caused by interaction between the parts during vibration.

[0036] In an achievable embodiment, the first connection structure 100 further includes two groups of adjustment washers 3, wherein one group of the adjustment washers 3 is located between the rubber pad 2 and the first pressing surface 11, and the other group of the adjustment washers 3 is located between the rubber pad 2 and the support surface 61. By setting the adjustment washers, it can be achieved that after the pre-tightening force is applied to the mounting screw 4, the end face of the first limiting column 12 is contacted and limited with the end face of the support surface 61, so that the optical lens can be always kept in a compressed state, thereby preventing the problem of the installation part being broken due to uneven force and extreme working conditions.

[0037] In the specific implementation, the length of the first limiting column 12 is defined as L 12 , the thickness of the rubber pad 2 is δ2, the thickness of the adjustment gasket 3 is δ3, the thickness of the mounting portion of the lens structure 5 is δ5, and the number of the adjustment gaskets 3 is n. At this time, the relationship between the above components is as follows:

[0038] L 12 =k*δ2+δ5+n*δ3. The specific number of the required adjusting gaskets 3 can be calculated by the above formula, where k is a coefficient, which is usually 1.5 to 1.8.

[0039] The first connection structure 100 of the present invention is to fix the entire lens structure 5 on the housing 6. In order to improve the stability of each lens, in an improved embodiment of the anti-breakage connection device, see Figure 6 As shown, the anti-breakage connection device further includes a second connection structure 200 , and the second connection structure 200 is used to fix each lens in the lens structure 5 in the housing 6 .

[0040] In one possible embodiment, see Figure 4 As shown, the second connection structure 200 includes a second clamping surface 21, a second limiting column 22 and a threaded column 23 with diameters decreasing from top to bottom. The support member on the shell 6 that matches each lens is provided with a mounting hole matching the threaded column 23. The lower surface of the second clamping surface 21 contacts each lens, the lower surface of the second limiting column 22 contacts the upper surface of the support member in the shell 6, and the threaded column 23 is screwed into the mounting hole of the support member.

[0041] In one possible embodiment, see Figure 5 As shown, the second connection structure 200 also includes a rubber pad 2 and an adjustment pad 3. The arrangement positions of the rubber pad 2 and the adjustment pad 3 are shown in FIG. Figure 5 As shown in , the arrangement positions of the rubber pad 2 and the adjusting pad 3 are the same as those in the first connection structure 100 .

[0042] In the specific implementation of the present invention, see Figure 5 As shown, one lens can be fixed by three second connection structures 200 .

[0043] The anti-breakage connection device of the present invention, through the design of the first connection structure and the second connection structure, can prevent the problem of breakage of the installation part during use of the optical lens under the premise of limited installation space and harsh working conditions, thereby ensuring the high reliability of aviation lighting fixtures throughout the life cycle of the aircraft.

[0044] Obviously, those skilled in the art should understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0045] In addition, although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An anti-crack connection device for an aviation lighting optical lens, the aviation lighting optical lens comprising a housing (6) and a lens structure (5), characterized in that: The anti-fracture connection device comprises a first connection structure (100), the first connection structure (100) being used to fix the lens structure (5) on the housing (6), comprising: A fixing structure (1), the fixing structure (1) comprising a first pressing surface (11) and a first limiting column (12) located on the lower surface of the first pressing surface (11), the lower end surface of the first limiting column (12) being in contact with a supporting surface (61) at the edge of the shell (6); A mounting screw (4) is provided, the first pressing surface (11) and the first limiting column (12) are provided with mounting through holes (14) through which the mounting screw (4) passes, and the supporting surface (61) is provided with a threaded hole matching the mounting screw (4).

2. The anti-breakage connection device of the aviation lighting optical lens according to claim 1, characterized in that: The first pressing surface (11) is a special-shaped pressing surface surrounded by a first pressing edge (111), a second pressing edge (112) and a third pressing edge (113), the first pressing edge (111) being conformal to the inner wall of the shell (6), and the second pressing edge (112) and the third pressing edge (113) both being in contact with the lens structure (5).

3. The anti-crack connection device for aviation lighting optical lenses according to claim 2, characterized in that: The connection points between the first pressing edge (111) and the second pressing edge (112), between the second pressing edge (112) and the third pressing edge (113), and between the third pressing edge (113) and the first pressing edge (111) are all rounded.

4. The anti-breakage connection device for aviation lighting optical lenses according to claim 1, characterized in that: The first connection structure (100) further comprises two rubber pads (2), wherein the rubber pads (2) are sleeved on the first limiting column (12), wherein one of the rubber pads (2) is located between the first pressing surface (11) and the lens structure (5), and the other of the rubber pads (2) is located between the lens structure (5) and the supporting surface (61).

5. The anti-breakage connection device for aviation lighting optical lenses according to claim 4, characterized in that: The first connection structure (100) further comprises two groups of adjustment gaskets (3), wherein one group of the adjustment gaskets (3) is located between the rubber pad (2) and the first pressing surface (11), and the other group of the adjustment gaskets (3) is located between the rubber pad (2) and the supporting surface (61).

6. The anti-breakage connection device for aviation lighting optical lenses according to claim 1, characterized in that: The anti-breakage connection device further comprises a second connection structure (200), wherein the second connection structure (200) is used to fix each lens in the lens structure (5) in the housing (6).

7. The anti-breakage connection device of the aviation lighting optical lens according to claim 6, characterized in that: The second connection structure (200) comprises a second pressing surface (21), a second limiting column (22) and a threaded column (23) whose diameters decrease successively from top to bottom, and a mounting hole matching the threaded column (23) is provided on a supporting member on the housing (6) matching each lens.

8. The anti-breakage connection device for aviation lighting optical lenses according to claim 7, characterized in that: The second connection structure (200) also includes a rubber pad (2) and an adjustment pad (3).

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