Satellite hinge with strong locking function

Abstract

The invention relates to the technical field of satellite space moving mechanisms, in particular to a satellite hinge with a strong locking function, comprising: a first moving assembly comprising a first moving part, a male hinge frame body and a first limiting assembly; the first limiting assembly comprises a first elastic locking assembly arranged in the male hinge frame body and a press-fit assembly arranged in the male hinge frame body and connected with the male hinge frame body in a relative rotation mode. The triggering movable arm is arranged on the side wall of the male hinge frame body and is fixedly connected with the press-fit assembly; the triggering rod is arranged on the side wall of the male hinge frame body and is relatively and fixedly connected with the male hinge frame body through a first elastic reset piece; the second movable assembly comprises a second movable part, a female hinge frame body, an ejector rod arranged at the position, corresponding to the triggering end of the triggering rod, of the female hinge frame body, and a locking piece arranged on the female hinge frame body and matched with the locking end of the first elastic locking assembly in a locking mode, and the female hinge frame body is hinged to the male hinge frame body through a hinge shaft; and a second elastic reset piece arranged on the hinge shaft is matched and connected with the female hinge frame body.

Description

Technical Field

[0001] The present invention relates to the technical field of satellite space activity mechanisms, in particular to a satellite hinge with a strong locking function. Background Art

[0002] Satellites are subject to weight and size constraints, and some components and products, such as satellite solar panels and rotating antennas, are folded before entering orbit. Some active components, such as large communication antennas and SAR antennas, place higher demands on stiffness and flatness after deployment. Existing satellite hinges have two essential functions: one is deployment, which is required to provide the power required for the active components to deploy, and the other is a locking function after deployment. The size of the locking function directly affects the performance of the active components after deployment. For example, if the solar panel hinge lacks a locking function, it may cause the sailboard to vibrate, thereby causing satellite attitude coupling vibration. If the SAR antenna lacks a high locking function, the antenna flatness will not meet the requirements after deployment, and performance will be significantly reduced.

[0003] Currently, all satellite hinges can meet deployment requirements. Locking functions are categorized into several types. 1) Spring locking: This utilizes spring force to drive a locking pin or hook into a locking hole or slot, achieving mechanical locking. The disadvantage is low locking torque. 2) Pyrotechnic locking: This utilizes a small pyrotechnic device to drive the locking pin into place or cut the final restraint. The disadvantage is a high locking impact and extremely high reliability requirements. 3) Shape memory alloy locking: This utilizes the deformation characteristics of SMA elements to drive locking, but is significantly affected by temperature. 4) Over-center locking: This utilizes the self-locking property of the mechanism after it passes through a dead center position. This has a complex structure and requires extremely high machining precision. In summary, the current locking capabilities of satellite hinges are weak, making it difficult to meet the current locking requirements for satellite movable components. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and provide a satellite hinge with a strong locking function, comprising: The first movable assembly includes a first movable part, a male hinge body fixedly connected to the first movable part, and a first limiting assembly cooperatively connected to the male hinge body; The first limiting assembly includes a first elastic locking assembly provided in the male hinge frame body, a press-fit assembly configured in the male hinge frame body and connected to the male hinge frame body for relative rotation, a trigger arm provided on the side wall of the male hinge frame body and fixedly connected to the press-fit assembly, and a trigger rod provided on the side wall of the male hinge frame body and relatively fixedly connected to the male hinge frame body through a first elastic reset member; the press-fit end of the trigger rod presses the trigger arm under the reset force of the first elastic reset member, and the trigger arm drives the press-fit assembly to press the first elastic locking assembly under the press-fit force of the trigger rod, so that the locking end of the first elastic locking assembly passes through the male hinge frame body and is located at the farthest end; The second movable component includes a second movable part and a female hinge body fixedly connected to the second movable part, a push rod provided on the female hinge body at a position corresponding to the trigger end of the trigger rod, and a locking member provided on the female hinge body and locked with the locking end of the first elastic locking component. The female hinge body and the male hinge body are hinged through a hinge shaft, and the second elastic reset member arranged on the hinge shaft is matched with the female hinge body.

[0005] Furthermore, the first elastic locking assembly includes a locking spring and a driving compression spring; The press-fit end of the locking spring is connected to the press-fit assembly, the locking end of the locking spring passes through the male hinge body in a direction away from the first movable assembly, and a hook groove is provided on the locking end of the locking spring; The driving compression spring is sleeved on the periphery of the locking spring piece, and the two ends of the driving compression spring are respectively in contact with the male hinge body and the pressed ends of the locking spring piece.

[0006] Furthermore, the press-fit assembly includes a rotating shaft arranged on the male hinge body close to the press-fit end and a water drop-shaped cam fixed at the center of the rotating shaft, the enlarged end of the cam is fixedly connected to the rotating shaft, and the tip side wall of the cam is connected to the press-fit end.

[0007] Furthermore, a guide column is provided on one side of the male hinge body where the trigger arm is provided, and the first elastic reset member and the trigger rod are sequentially sleeved on the guide column from the inside to the outside; The first elastic return member is a torsion spring, and the trigger rod includes the press-fit end and the trigger end that are perpendicular to each other; one end of the torsion spring is coiled on the guide column and fixedly connected to the guide column, and the other end is fixedly connected to the trigger end of the trigger rod.

[0008] Furthermore, the end of the locking member not connected to the female hinge body is bent toward the second movable component to form a spring hook point that matches the hook groove on the locking spring.

[0009] Furthermore, the second elastic return member is a driving spiral spring, one end of which is fixedly connected to the hinge shaft, and the other end of which is fixedly connected to the female hinge body.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a satellite hinge with a strong locking function. The driving scroll spring is used as a satellite hinge to store elastic potential energy. The impact force of the satellite hinge driving scroll spring at the end of rotation is used to provide a driving force for the top rod to hit the trigger rod to rotate the trigger rod. The rotating trigger rod loses the pressing force on the trigger arm, and the trigger arm loses the pressing force on the driving compression spring. As a result, the locking spring is reset under the restoring force of the driving compression spring and locks the satellite hinge with the locking member. The present invention adopts a trigger rod and a trigger arm movable mechanism to form force amplification and improve the locking ability of the satellite hinge.

[0011] 2. After the hinge of the satellite hinge with a strong locking function of the present invention is locked in place, the locking spring hooks the spring hook point, and under the action of the large-diameter driving compression spring, the locking stiffness of the hinge is improved. By selecting driving compression springs with different wire diameters, the locking stiffness of the satellite hinge can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are provided to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic diagram of the axis side of a satellite hinge with a strong locking function in a compressed state according to the present invention. Figure 1 ; Figure 2 This is an axial side schematic diagram of a satellite hinge with a strong locking function in an unfolded and locked state according to the present invention; Figure 3 This is an exploded view of a satellite hinge with a strong locking function according to the present invention; Figure 4 This is a schematic diagram of the axis side of a satellite hinge with a strong locking function in a compressed state according to the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the axis side of a satellite hinge with a strong locking function in a compressed state according to the present invention. Figure 3 ; Figure 6 This is a schematic diagram of the axis side of a satellite hinge with a strong locking function in a compressed state according to the present invention. Figure 4 ; Figure 7 This is a simplified schematic diagram of a satellite hinge with a strong locking function according to the present invention; Figure 8 This is a schematic diagram of a torsion spring of a satellite hinge with a strong locking function according to the present invention; Figure 9 This is a schematic diagram of a cam in an unfolded and locked state of a satellite hinge with a strong locking function according to the present invention; Figure 10 This is a schematic diagram of a cam in a compressed state of a satellite hinge with a strong locking function according to the present invention.

[0013] Reference numerals 1: first active component; 11: first movable part; 12: male hinge frame; 13: first limit assembly; 131: first elastic locking assembly; 132: press-fit assembly; 133: trigger arm; 134: torsion spring; 135: trigger rod; 1311: locking spring; 1312: driving compression spring; 13111: hook groove; 1321: shaft; 1322: cam; 2: second active component; 21: Second movable part; 22: Female hinge body; 23: Push rod; 24: Locking member; 25: Driving scroll spring; 241: Reed hook point. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0015] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. As used herein, "one" not only means "only one" but also "more than one."

[0016] First embodiment See also Figure 1-10 The technical solution of a satellite hinge with a strong locking function provided in this embodiment includes the following: The first movable assembly 1 comprises a first movable part 11, a male hinge body 12 fixedly connected to the first movable part 11, and a first position-limiting assembly 13 cooperatively connected to the male hinge body 12; The first limiting assembly 13 includes a first elastic locking assembly 131 provided in the male hinge frame body 12, a press-fit assembly 132 disposed in the male hinge frame body 12 and rotatably connected to the male hinge frame body 12, a trigger arm 133 provided on a side wall of the male hinge frame body 12 and fixedly connected to the press-fit assembly 132, and a trigger rod 135 provided on a side wall of the male hinge frame body 12 and fixedly connected to the male hinge frame body 12 via a first elastic return member (torsion spring 134). The second movable assembly 2 includes a second movable part 21 and a female hinge body 22 fixedly connected to the second movable part 21, a push rod 23 provided on the female hinge body 22 at a position corresponding to the trigger end of the trigger rod 135, and a locking member 24 provided on the female hinge body 22 and locked with the locking end of the first elastic locking assembly 131. The female hinge body 22 is hinged to the male hinge body 12 via a hinge axis, and a second elastic return member disposed on the hinge axis is in contact with the female hinge body 22. The second elastic return member is a driving scroll spring 25, one end of which is fixedly connected to the hinge axis and the other end is fixedly connected to the female hinge body 22.

[0017] In the specific implementation, as shown in the attached Figure 1 As shown, in the compressed state, the first movable component 1 is located at the top, and the second movable component 2 is located at the bottom; the first movable component 1 includes a first movable part 11 on the right and a male hinge body 12 fixedly connected to the top of the first movable part 11, a first elastic locking component 131 and a press-fit component 132 arranged in the inner cavity of the male hinge body 12 from left to right, and a trigger arm 133 and a trigger rod 135 arranged on the periphery of the male hinge body 12; the second movable component 2 includes a second movable part 21 on the right and a female hinge body 22 fixedly connected to the bottom of the second movable part 21, a top rod 23 arranged on the periphery of the vertical surface of the female hinge body 22 and a locking member 24 arranged at the bottom of the female hinge body 22.

[0018] In the specific implementation, as shown in the attached Figure 2As shown, the male hinge frame body 12 is provided with an accommodating inner cavity, and a hollow groove for the first elastic locking component 131 to pass through is provided on the vertical side surface connected to the left side of the accommodating inner cavity, and the first elastic locking component 131 includes a locking spring 1311 and a driving compression spring 1312; the left end of the locking spring 1311 is the locking end, and the right end with the center support is the press-fit end, the press-fit end of the locking spring 1311 is connected to the press-fit component 132, and the locking end of the locking spring 1311 passes through the male hinge frame body 12 through the hollow groove away from the direction of the first movable component 1, and a hook groove 13111 is provided on the locking end of the locking spring 1311; the driving compression spring 1312 is sleeved on the outer periphery of the locking spring 1311, and the two ends of the driving compression spring 1312 are respectively abutted against the male hinge frame body 12 and the press-fit end of the locking spring 1311.

[0019] Specifically, the press-fit assembly 132 includes a rotating shaft 1321 provided on the male hinge body 12 close to the press-fit end and a water drop-shaped cam 1322 fixed at the center of the rotating shaft 1321, the enlarged end of the cam 1322 is fixedly connected to the rotating shaft 1321, and the tip side wall of the cam 1322 is connected to the press-fit end.

[0020] Specifically, as attached Figure 8 As shown, a guide column is provided on one side of the trigger arm 133 provided on the male hinge body 12, and the first elastic return member and the trigger rod 135 are sequentially sleeved on the guide column from the inside to the outside; the first elastic return member is a torsion spring 134, and the trigger rod 135 includes the press-fit end and the trigger end vertically connected to each other; one end of the torsion spring 134 is coiled on the guide column and fixedly connected to the guide column, and the other end is fixedly connected to the trigger end of the trigger rod 135.

[0021] Specifically, the end of the locking member 24 that is not connected to the female hinge body 22 is bent toward the second movable component 21 to form a spring hook point 241 that cooperates with the hook groove 13111 on the locking spring 1311 .

[0022] In a specific implementation, when the satellite hinge is in a compressed state, the angle between the mounting surfaces of the first movable part 11 and the second movable part 21 of the satellite hinge is 0°. The trigger rod 135, under the action of the torsion spring 134, limits the rotation of the trigger arm 133. The trigger arm 133 and the cam 1322 are relatively fixed. That is, the press-fit end of the trigger rod 135 presses the trigger arm 133 under the reset force of the first elastic reset member. The trigger arm 133 drives the press-fit assembly 132 to press the first elastic locking assembly 131 under the press-fit force of the trigger rod 135, so that the locking end of the first elastic locking assembly 131 passes through the male hinge body 12 and is located at the farthest end. In a specific implementation, when the satellite hinge is in the process of unfolding, the mother hinge body 22 rotates around the hinge axis under the action of the driving spiral spring 25, that is, the top rod 23 and the spring hook point installed on the mother hinge body 22 rotate around the hinge axis at the same time, and have a certain speed and impact force. When the top rod 23 contacts the trigger end of the trigger rod 135. The speed and impact force of the top rod 23 offset the torsion force of the torsion spring 134 on the press-fit end of the trigger rod 135, and the trigger rod 135 rotates around the axis under the action of the top rod 23. After the trigger rod 135 rotates a certain angle, the constraint of the trigger arm 133 is released. Since the trigger arm 133 is relatively fixed to the cam 1322, the cam 1322 is also released. At this time, the spring hook point 241 pushes open the locking spring 1311, but does not lock it. After the cam 1322 is released from its constraint, the driving compression spring 1312 drives the locking spring 1311 to hook the spring hook point 241 , thereby locking the male hinge body 12 and the female hinge body 22 of the satellite hinge.

[0023] In a specific implementation, when the satellite hinge is unfolded and locked, the locking spring 1311 generates a pulling force on the spring hook point 241 under the reset force of the driving compression spring 1312, thereby achieving a stable locking connection.

[0024] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A satellite hinge with a strong locking function, characterized in that: include: The first movable assembly includes a first movable part, a male hinge body fixedly connected to the first movable part, and a first limiting assembly cooperatively connected to the male hinge body; The first limiting assembly includes a first elastic locking assembly provided in the male hinge frame body, a press-fit assembly configured in the male hinge frame body and connected to the male hinge frame body for relative rotation, a trigger arm provided on the side wall of the male hinge frame body and fixedly connected to the press-fit assembly, and a trigger rod provided on the side wall of the male hinge frame body and relatively fixedly connected to the male hinge frame body through a first elastic reset member; the press-fit end of the trigger rod presses the trigger arm under the reset force of the first elastic reset member, and the trigger arm drives the press-fit assembly to press the first elastic locking assembly under the press-fit force of the trigger rod, so that the locking end of the first elastic locking assembly passes through the male hinge frame body and is located at the farthest end; The second movable component includes a second movable part and a female hinge body fixedly connected to the second movable part, a push rod provided on the female hinge body at a position corresponding to the trigger end of the trigger rod, and a locking member provided on the female hinge body and locked with the locking end of the first elastic locking component. The female hinge body and the male hinge body are hinged through a hinge shaft, and the second elastic reset member arranged on the hinge shaft is matched with the female hinge body.

2. The satellite hinge with strong locking function according to claim 1, characterized in that: The first elastic locking assembly includes a locking spring and a driving compression spring; The press-fit end of the locking spring is connected to the press-fit assembly, the locking end of the locking spring passes through the male hinge body in a direction away from the first movable assembly, and a hook groove is provided on the locking end of the locking spring; The driving compression spring is sleeved on the periphery of the locking spring piece, and the two ends of the driving compression spring are respectively in contact with the male hinge body and the pressed ends of the locking spring piece.

3. The satellite hinge with strong locking function according to claim 2, characterized in that: The press-fit assembly includes a rotating shaft arranged on the male hinge body near the press-fit end and a water drop-shaped cam fixed at the center of the rotating shaft, the enlarged end of the cam is fixedly connected to the rotating shaft, and the tip side wall of the cam is connected to the press-fit end.

4. The satellite hinge with strong locking function according to claim 2, characterized in that: A guide column is provided on one side of the male hinge body where the trigger arm is provided, and the first elastic reset member and the trigger rod are sequentially sleeved on the guide column from the inside to the outside; The first elastic return member is a torsion spring, and the trigger rod includes the press-fit end and the trigger end that are perpendicular to each other; one end of the torsion spring is coiled on the guide column and fixedly connected to the guide column, and the other end is fixedly connected to the trigger end of the trigger rod.

5. The satellite hinge with strong locking function according to claim 2, characterized in that: The end of the locking member that is not connected to the female hinge body is bent toward the second movable component to form a spring hook point that matches the hook groove on the locking spring.

6. The satellite hinge with strong locking function according to claim 2, characterized in that: The second elastic return member is a driving scroll spring, one end of which is fixedly connected to the hinge shaft, and the other end of which is fixedly connected to the female hinge body.

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