A self-locking protective cover with display logo

Abstract

The present invention discloses a self-locking protective cover with a display mark, comprising a protective cover body, which has a flip cover and a fixed base, wherein the flip cover has a cover accommodating space inside; a display mark, which is formed on the top surface of the flip cover and is located above the cover accommodating space; and a printed circuit board, which is accommodated in the cover accommodating space, wherein the printed circuit board has an LED or an OLED, and the LED or the OLED is used to illuminate the display mark. The present invention has the beneficial effect that it can meet the night vision compatibility requirements of the protective cover.

Description

Technical Field

[0001] The invention relates to a self-locking protective cover with a display mark. Background Art

[0002] The switch protection cover realizes the operation restriction of the switch through its structural characteristics, such as the operation restriction of turning the switch handle and the pressing operation restriction of the push switch, and realizes the warning and reminder function through the color and logo of the protection cover. The switch protection cover is mainly used on the switches of important systems and important equipment to realize the protection, reminder and warning of important operations. It is widely used in the switches of the cockpit and working cabin control panel of aircraft, ships, armored vehicles, engineering vehicles, etc., such as emergency systems, missile launch systems, landing gear control equipment, propeller control equipment, etc.

[0003] Traditional protective covers only meet the functions of operational protection, reminders and warnings in terms of geometric design and appearance. However, with the development of combat concepts and technologies, new requirements have been put forward, especially for improving the night flight and night combat capabilities of aircraft, armored vehicles and ships. How to improve the concealment capability of night combat requires that the operating devices have lighting display capabilities compatible with night vision. Operators cannot see the position of traditional protective covers in night vision environments, which has an adverse effect on the convenience and accuracy of switch operations. In addition, based on ergonomic design, it is required that there must be sufficient operating clearance between the switch devices on the operating panel, which requires that the opening and closing angles of the switch protective cover must meet the requirements of the switch operating angle and position travel. Summary of the invention

[0004] The invention provides a novel self-locking protective cover with a display mark, which solves the problem of night vision compatible lighting display capability.

[0005] In order to achieve this purpose, the technical solution of the present invention is as follows: a self-locking protective cover with a display mark, comprising:

[0006] A protective cover body, which has a flip cover and a fixed base, wherein the flip cover has a cover accommodating space inside;

[0007] A display mark is formed on the top surface of the flip cover and is located above the accommodating space of the cover; and

[0008] A printed circuit board is accommodated in the upper cover accommodation space. The printed circuit board is provided with an LED or an OLED, and the LED or the OLED is used to illuminate the display mark.

[0009] As a preferred solution of a self-locking protective cover with a display mark, the flip upper cover has an upper cover top wall and an upper cover side wall extending downward from the rear end of the upper cover top wall, the fixed base has a base bottom wall and a base side wall extending upward from the rear end of the base bottom wall, a driving shaft is combined between the upper cover side wall and the base side wall, so that the flip upper cover can be flipped around the driving shaft; a driven shaft is combined on the upper cover side wall, a shaft protrusion extending downward is formed on the driven shaft, a bottom wall protrusion extending upward corresponding to the shaft protrusion is formed on the rear end of the base bottom wall, and a spring is combined between the shaft protrusion and the bottom wall protrusion.

[0010] As a preferred solution for a self-locking protective cover with a display mark, the top wall of the upper cover is made of aviation plexiglass, preferably YB-3 colorless aviation plexiglass, and the top surface of the top wall of the upper cover is coated with a surface paint layer, and the surface paint layer is primer, white paint and topcoat from bottom to top, and the display mark is formed by etching the topcoat with a laser marking machine.

[0011] As a preferred solution of a self-locking protective cover with a display mark, the upper cover accommodating space is located at the front end of the upper cover top wall, and the upper cover top wall also has a wiring channel, the wiring channel extends backward from the upper cover accommodating space to the rear end of the upper cover top wall, the printed circuit board has a connecting wire, the connecting wire passes through the wiring channel from the printed circuit board and goes out downward from the rear end of the upper cover top wall, and then passes downward through the driven shaft, the shaft protrusion, the reset spring and the bottom wall protrusion in sequence and goes out downward from the rear end of the bottom wall of the base, and the connecting wire is connected to the external power supply circuit through a wire plug.

[0012] As a preferred solution of a self-locking protective cover with a display mark, it also includes a light-isolating sheet formed on the outer periphery of the printed circuit board, and the light-isolating sheet is used to prevent the light emitted by the LED or OLED from being dispersed. Preferably, the light-isolating sheet is a black filter film.

[0013] As a preferred solution of the self-locking protective cover with display identification, the surface of the printed circuit board is coated with triple-conformal paint.

[0014] As a preferred solution of a self-locking protective cover with a display mark, the printed circuit board also has a TVS tube, a varistor, a capacitor and an anti-reverse diode, the positive electrode of the external power supply circuit is respectively connected to the first end of the TVS tube, the first end of the varistor, the first end of the capacitor, and the positive electrode of the anti-reverse diode, the negative electrode of the anti-reverse diode is connected to the positive electrode of the LED or OLED, and the negative electrode of the external power supply circuit is respectively connected to the second end of the TVS tube, the second end of the varistor, the second end of the second capacitor and the negative electrode of the LED or OLED.

[0015] Compared with the prior art, the beneficial effects of the present invention are at least: reasonable design, simple and compact structure, long service life and easy promotion. It can meet the night vision compatibility requirements of the protective cover and is suitable for promotion in the field of installation protection design of control panel switches of combat aircraft, ships, armored vehicles, engineering vehicles, etc. It also meets the requirements of ergonomic design and is easy to use.

[0016] In addition to the technical problems solved by the present invention, the technical features that constitute the technical solution, and the beneficial effects brought about by the technical features of the technical solution described above, other technical problems that can be solved by the present invention, other technical features included in the technical solution, and the beneficial effects brought about by these technical features will be further described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded view of the protective cover structure.

[0018] Figure 2 It is a schematic diagram of the printed circuit board lighting dimming control circuit.

[0019] Figure 3 is a cross-sectional view of the protective cover. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below by means of specific embodiments in combination with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] like Figure 1 , Figure 3 As shown, a self-locking protective cover with a display mark is characterized in that: the protective cover includes a protective cover upper cover 1, a main shaft 2, a main shaft sleeve 3, a driven shaft sleeve 4, a driven shaft 5, a stop block 6, a protective cover base 7, a spring 8, and a display mark 9. The protective cover upper cover 1 also includes a light-shielding sheet 10 and a printed circuit board 11. The protective cover upper cover 1 has a wiring groove for the wire 13 to be routed, and is connected to an external power supply circuit through a wire plug 12. The display mark 9 is engraved on the surface of the protective cover upper cover 1. The power processing circuit and the lighting circuit are integrated on the printed circuit board 11. The protective cover base 7 is designed with an A limit surface and a B limit surface for limiting the opening and closing of the protective cover upper cover 1.

[0022] The spindle 2 and spindle sleeve 3 rivet the protective cover upper cover 1 on the protective cover base 7. The spindle 2, spindle sleeve 3 and protective cover upper cover 1 are provided with mutually matching shaft hole limiting structures. The driven shaft sleeve 4 and driven shaft 5 are riveted on the protective cover upper cover 1 and connected to the protective cover base 7 through a spring 8. The spindle 2, spindle sleeve 3, driven shaft sleeve 4 and driven shaft 5 are made of aluminum alloy to reduce the weight of the protective cover.

[0023] One end of the spring 8 is mounted on the driven shaft sleeve 4, and the other end is riveted to the protective cover base 7 through the limit block 6. When the protective cover upper cover 1 is opened, the protective cover upper cover 1 is turned around the main shaft sleeve 3 and the main shaft 2 on the one hand, and the driven shaft sleeve 4 and the driven shaft 5 are turned on the other hand. Due to the elastic force of the spring 8, the protective cover is self-locked when it is opened to the maximum angle, and the protective cover can be closed only by moving the protective cover upper cover 1 in the opposite direction again. By designing the elastic coefficient of the spring 8, different protective cover operating forces can be obtained.

[0024] The printed circuit board 11 is made of copper-coated epoxy glass cloth laminate as the substrate, and the surface is coated with "three-proof paint", which has the characteristics of flame retardancy, good insulation, resistance to moisture and heat, and mildew. The printed circuit board circuit consists of two parts:

[0025] 1. Lighting circuit: Use LED or OLED plus a resistor in series as one path, then connect multiple paths in parallel, and connect to the external power supply through the wire 13 and the wire plug 12. The light source distribution in the lighting circuit ensures that the display sign has two or more LEDs or OLEDs in different paths, so that when one path is damaged, the display sign can still be illuminated.

[0026] 2. Power processing circuit: It is composed of TVS tube, varistor, capacitor and anti-reverse diode, as shown in the attached Figure 2 As shown, the circuit design can prevent damage to the printed circuit board lighting circuit caused by power spikes, reverse polarity of the power supply, abnormal steady state and transient voltage.

[0027] The protective cover upper cover 1 is made of aviation organic glass, preferably YB-3 colorless aviation organic glass. The protective cover upper cover 1 is coated with a paint layer, and the surface paint layer consists of a primer, a white paint and a topcoat. The selection of the primer and the topcoat must meet the requirements of corrosion protection of the protective cover. The display logo 9 is engraved on the surface of the protective cover upper cover 1 by a laser marking machine. Since the topcoat is engraved, the paint layer at the display logo consists of a light-transmitting primer and a white paint, so it can be illuminated by an LED or OLED light source arranged on the printed circuit board 11 at the bottom thereof. A wiring groove is set on the protective cover upper cover 1 for the printed circuit board lead wire 13 to be used for wiring, and the printed circuit board wire is connected to an external power supply through a wire plug 12.

[0028] The protective cover base 7 is designed with an A limit surface and a B limit surface for limiting the opening and closing of the protective cover upper cover 1. The A limit surface is used to limit the closing of the bottom surface of the protective cover upper cover and the protective cover base 7 when the protective cover upper cover 1 is closed, and the B limit surface is used to limit the protective cover upper cover when it is opened to the maximum angle. By designing the position and height parameters of the B limit surface, the maximum angle of the protective cover upper cover opened to the self-locking position can be adjusted.

[0029] The light-isolating film 10 is embedded in the upper cover 1 of the protective cover and vertically distributed around the PCB. A black filter film is preferably used to prevent the light source on the PCB from being dispersed, which is beneficial to improving the uniformity of the illumination brightness when the display logo is illuminated by the backlight.

[0030] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0031] Although the terms such as protective cover upper cover 1, main shaft 2, main shaft sleeve 3, driven shaft sleeve 4, driven shaft 5, stopper 6, protective cover base 7 and spring 8, display mark 9, light-isolating sheet 10, printed circuit board 11, wire plug 12, wire 13 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A self-locking protective cover with a display mark, characterized in that: Contains: A protective cover body, which has a flip cover and a fixed base, wherein the flip cover has a cover accommodating space inside; A display mark formed on the top surface of the flip cover and located above the accommodating space of the cover; as well as, A printed circuit board is accommodated in the upper cover accommodation space, and the printed circuit board has an LED or an OLED, and the LED or the OLED is used to illuminate the display mark; The flip upper cover comprises an upper cover top wall and an upper cover side wall extending downward from the rear end of the upper cover top wall, the fixed base comprises a base bottom wall and a base side wall extending upward from the rear end of the base bottom wall, a driving shaft is combined between the upper cover side wall and the base side wall, so that the flip upper cover can be flipped around the driving shaft; a driven shaft is combined on the upper cover side wall, a shaft protrusion extending downward is formed on the driven shaft, a bottom wall protrusion extending upward corresponding to the shaft protrusion is formed on the rear end of the base bottom wall, and a spring is combined between the shaft protrusion and the bottom wall protrusion.

2. A self-locking protective cover with a display mark according to claim 1, characterized in that: The top wall of the upper cover is made of aviation plexiglass, and the top surface of the top wall of the upper cover is coated with a surface paint layer, and the surface paint layer is primer, white paint and top paint from bottom to top, and the display mark is formed by etching the top paint with a laser marking machine.

3. A self-locking protective cover with a display mark according to claim 2, characterized in that: The upper cover accommodating space is located at the front end of the upper cover top wall, and a wiring channel is further provided in the upper cover top wall. The wiring channel extends backward from the upper cover accommodating space to the rear end of the upper cover top wall. The printed circuit board is provided with a connecting wire, and the connecting wire passes through the wiring channel from the printed circuit board and goes out downward from the rear end of the upper cover top wall, and then passes downward through the driven shaft, the shaft protrusion, the spring and the bottom wall protrusion in sequence and goes out downward from the rear end of the bottom wall of the base, and the connecting wire is connected to the external power supply circuit through a wire plug.

4. A self-locking protective cover with a display mark according to claim 3, characterized in that: It also includes a light isolation sheet formed on the outer periphery of the printed circuit board, the light isolation sheet is used to prevent the light emitted by the LED or OLED from being dispersed, and the light isolation sheet is a black filter film.

5. The self-locking protective cover with a display mark according to claim 1, characterized in that: The surface of the printed circuit board is coated with three-proof paint.

6. The self-locking protective cover with a display mark according to claim 1, characterized in that: The printed circuit board also has a TVS tube, a varistor, a capacitor and an anti-reverse diode. The positive electrode of the external power supply circuit is respectively connected to the first end of the TVS tube, the first end of the varistor, the first end of the capacitor, and the positive electrode of the anti-reverse diode. The negative electrode of the anti-reverse diode is connected to the positive electrode of the LED or OLED. The negative electrode of the external power supply circuit is respectively connected to the second end of the TVS tube, the second end of the varistor, the second end of the capacitor and the negative electrode of the LED or OLED.

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