Satellite hinge with strong locking function

Abstract

The present application relates to satellite space activity mechanism technical field, especially a kind of satellite hinge with strong locking function, comprising: first movable assembly, including first movable component, male hinge frame body and first limiting component;First limiting component includes first elastic locking assembly arranged in male hinge frame body, press-fit component configured in male hinge frame body and relatively rotatable with male hinge frame body, trigger arm arranged on the side wall of male hinge frame body and fixedly connected with press-fit component, and trigger rod arranged on the side wall of male hinge frame body and fixedly connected with male hinge frame body by first elastic return piece;Second movable assembly, including second movable component, female hinge frame body, top rod arranged on female hinge frame body and corresponding with the trigger end of trigger rod, locking piece arranged on female hinge frame body and locked with the locking end of first elastic locking assembly, female hinge frame body is hinged with male hinge frame body by hinge shaft, second elastic return piece configured on hinge shaft is matched with female hinge frame body.

Description

Technical Field

[0001] This invention relates to the field of satellite space activity mechanism technology, and in particular to a satellite hinge with a strong locking function. Background Technology

[0002] Satellites are constrained by weight and size, and some components and products are retracted before entering orbit, such as satellite solar panels and rotating antennas. However, some moving parts, such as large communication antennas and SAR antennas, have higher requirements for rigidity and flatness after deployment. Existing satellite hinges have two essential functions: deployment, which provides the power needed for the deployment of moving parts, and locking after deployment. The strength of the locking function directly affects the performance of the moving parts after deployment. For example, if the solar panel hinge lacks a locking function, it may cause solar panel vibration, leading to attitude-coupled vibrations in the satellite; if the SAR antenna lacks a high locking function, the flatness of the antenna will not meet the requirements after deployment, resulting in a significant performance degradation.

[0003] Currently, satellite hinges can all meet the deployment requirements. However, the locking function can be categorized into several types: 1) Spring locking: Utilizing spring force to drive a locking pin or hook into a locking hole or groove to achieve mechanical locking. The disadvantage is low locking torque. 2) Pyrotechnic locking: Using a small pyrotechnic device to drive the locking pin into position or cut off the final constraint. The disadvantage is significant locking impact and extremely high reliability requirements. 3) Shape memory alloy (SMA) locks: Utilizing the deformation characteristics of SMA components to drive locking, but significantly affected by temperature. 4) Over-center locking: Utilizing the self-locking characteristic of the mechanism after passing through a dead center position. The structure is complex, requiring extremely high machining precision. In summary, current satellite hinges have weak locking capabilities and cannot meet the locking function requirements of current satellite moving parts. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a satellite hinge with a strong locking function, comprising:

[0005] The first movable component includes a first movable part, a male hinge frame fixedly connected to the first movable part, and a first limiting component that cooperates with the male hinge frame.

[0006] The first limiting component includes a first elastic locking component disposed in the male hinge frame, a press-fit component disposed in the male hinge frame and rotatably connected to the male hinge frame, a trigger arm disposed on the side wall of the male hinge frame and fixedly connected to the press-fit component, and a trigger rod disposed on the side wall of the male hinge frame and fixedly connected to the male hinge frame through a first elastic reset member; the press-fit end of the trigger rod presses against the trigger arm under the reset force of the first elastic reset member, and the trigger arm drives the press-fit component to press against the first elastic locking component under the press-fit force of the trigger rod, so that the locking end of the first elastic locking component passes through the male hinge frame and is located at the farthest end;

[0007] The second movable component includes a second movable part and a female hinge frame fixedly connected to the second movable part, a top rod disposed on the female hinge frame at a position corresponding to the trigger end of the trigger rod, and a locking member disposed on the female hinge frame and locked in place with the locking end of the first elastic locking component. The female hinge frame and the male hinge frame are hinged together by a hinge shaft, and a second elastic reset member disposed on the hinge shaft is engaged with the female hinge frame.

[0008] Furthermore, the first elastic locking assembly includes a locking spring and a driving compression spring;

[0009] The pressed end of the locking spring is connected to the pressing assembly, and the locking end of the locking spring passes through the male hinge frame in a direction away from the first movable assembly. The locking end of the locking spring is provided with a hook groove.

[0010] The driving spring is sleeved around the locking spring, and the two ends of the driving spring abut against the male hinge frame and the pressed end of the locking spring, respectively.

[0011] Furthermore, the press-fit assembly includes a rotating shaft disposed on the male hinge frame near the press-fit end and a teardrop-shaped cam fixedly disposed at the center of the rotating shaft. The enlarged end of the cam is fixedly connected to the rotating shaft, and the tip sidewall of the cam is connected to the press-fit end.

[0012] Furthermore, a guide post is provided on one side of the male hinge frame where the trigger arm is located, and the first elastic reset member and the trigger rod are sequentially sleeved on the guide post from the inside to the outside;

[0013] The first elastic reset element is a torsion spring, and the trigger rod includes a press-fit end and a trigger end that are perpendicularly connected to each other; one end of the torsion spring is coiled on the guide post and fixedly connected to the guide post, and the other end is fixedly connected to the trigger end of the trigger rod.

[0014] Furthermore, the end of the locking member that is not connected to the female hinge frame is bent toward the second movable component to form a spring hook point that cooperates with the hook groove on the locking spring.

[0015] Furthermore, the second elastic reset member is a driving spiral spring, one end of which is fixedly connected to the hinge shaft, and the other end is fixedly connected to the mother hinge frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention discloses a satellite hinge with a strong locking function. The driving spiral spring of the satellite hinge stores elastic potential energy. The impact force at the end of the rotation of the driving spiral spring is used to provide the driving force for the top rod to hit the trigger rod and 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 spring. Thus, the locking spring is reset under the restoring force of the driving spring and locks the satellite hinge with the locking member. This invention uses a trigger rod and trigger arm moving mechanism to amplify the force and improve the locking capability of the satellite hinge.

[0018] 2. In this invention, a satellite hinge with a strong locking function is locked in place. After the hinge is locked, the locking spring hooks onto the spring hook point. Under the action of the large-diameter drive compression spring, the locking stiffness of the hinge is improved. By selecting drive compression springs with different wire diameters, the locking stiffness of the satellite hinge can be adjusted. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the compressed state of a satellite hinge with a strong locking function according to the present invention. Figure 1 ;

[0021] Figure 2 This is an isometric view of a satellite hinge with a strong locking function in its unfolded and locked state according to the present invention.

[0022] Figure 3 This is an exploded view of a satellite hinge with a strong locking function according to the present invention;

[0023] Figure 4 This is a schematic diagram of the compressed state of a satellite hinge with a strong locking function according to the present invention. Figure 2 ;

[0024] Figure 5This is a schematic diagram of the compressed state of a satellite hinge with a strong locking function according to the present invention. Figure 3 ;

[0025] Figure 6 This is a schematic diagram of the compressed state of a satellite hinge with a strong locking function according to the present invention. Figure 4 ;

[0026] Figure 7 This is a simplified schematic diagram of a satellite hinge with strong locking function according to the present invention;

[0027] Figure 8 This is a schematic diagram of a torsion spring for a satellite hinge with a strong locking function according to the present invention.

[0028] Figure 9 This is a schematic diagram of a cam in the unfolded and locked state of a satellite hinge with a strong locking function according to the present invention.

[0029] Figure 10 This is a schematic diagram of a cam in the compressed state of a satellite hinge with a strong locking function according to the present invention.

[0030] Figure Labels

[0031] 1: First activity component;

[0032] 11: First movable component; 12: Male hinge frame; 13: First limiting component;

[0033] 131: First elastic locking assembly; 132: Press-fit assembly; 133: Trigger boom; 134: Torsion spring; 135: Trigger rod;

[0034] 1311: Locking spring; 1312: Drive compression spring;

[0035] 13111: Groove;

[0036] 1321: Shaft; 1322: Cam;

[0037] 2: Second activity component;

[0038] 21: Second movable component; 22: Female hinge frame; 23: Push rod; 24: Locking element; 25: Drive spiral spring;

[0039] 241: Reed hook point. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be 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 merely illustrative of the invention and are not intended to limit the invention.

[0041] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one".

[0042] First Embodiment

[0043] Please see Figure 1-10 The technical solution of a satellite hinge with strong locking function provided in this embodiment includes the following:

[0044] The first movable component 1 includes a first movable part 11, a male hinge frame 12 fixedly connected to the first movable part 11, and a first limiting component 13 that cooperates with the male hinge frame 12.

[0045] The first limiting component 13 includes a first elastic locking component 131 disposed in the male hinge frame 12, a press-fit component 132 disposed in the male hinge frame 12 and rotatably connected to the male hinge frame 12, a trigger arm 133 disposed on the side wall of the male hinge frame 12 and fixedly connected to the press-fit component 132, and a trigger rod 135 disposed on the side wall of the male hinge frame 12 and fixedly connected to the male hinge frame 12 through a first elastic reset member (torsion spring 134).

[0046] The second movable component 2 includes a second movable part 21 and a female hinge frame 22 fixedly connected to the second movable part 21, a top rod 23 disposed on the female hinge frame 22 corresponding to the trigger end of the trigger rod 135, and a locking member 24 disposed on the female hinge frame 22 and locked to the locking end of the first elastic locking component 131. The female hinge frame 22 and the male hinge frame 12 are hinged by a hinge shaft, and a second elastic reset member disposed on the hinge shaft is engaged with the female hinge frame 22. The second elastic reset member is a driving spiral spring 25, one end of which is fixedly connected to the hinge shaft, and the other end is fixedly connected to the female hinge frame 22.

[0047] In specific implementation, as shown in the appendix Figure 1As shown, in the compressed state, the upper part is the first movable component 1, and the lower part is the second movable component 2. The first movable component 1 includes a first movable part 11 on the right and a male hinge frame 12 fixedly connected to the upper part of the first movable part 11, a first elastic locking component 131 and a pressing component 132 arranged from left to right in the inner cavity of the male hinge frame 12, and a trigger arm 133 and a trigger rod 135 arranged around the male hinge frame 12. The second movable component 2 includes a second movable part 21 on the right and a female hinge frame 22 fixedly connected to the lower part of the second movable part 21, a top rod 23 arranged around the vertical surface of the female hinge frame 22, and a locking member 24 arranged at the bottom of the female hinge frame 22.

[0048] As shown in the appendix in the specific implementation. Figure 2 As shown, the male hinge frame 12 has an accommodating inner cavity. A perforated groove is provided on the vertical side of the accommodating inner cavity, allowing the first elastic locking assembly 131 to pass through. The first elastic locking assembly 131 includes a locking spring 1311 and a driving spring 1312. The left end of the locking spring 1311 is the locking end, and the right end with a central support is the pressed-fit end. The pressed-fit end of the locking spring 1311 is connected to the pressing assembly 132. The locking end of the locking spring 1311 passes through the male hinge frame 12 through the perforated groove, away from the direction of the first movable assembly 1. The locking end of the locking spring 1311 has a hook groove 13111. The driving spring 1312 is sleeved around the locking spring 1311, and both ends of the driving spring 1312 abut against the male hinge frame 12 and the pressed-fit end of the locking spring 1311, respectively.

[0049] Specifically, the press-fit assembly 132 includes a rotating shaft 1321 disposed on the male hinge frame 12 near the press-fit end and a teardrop-shaped cam 1322 fixedly disposed 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 sidewall of the cam 1322 is connected to the press-fit end.

[0050] Specifically, as shown in the attached document Figure 8 As shown, the male hinge frame 12 has a guide post on one side of the trigger arm 133. The first elastic reset member and the trigger rod 135 are sequentially sleeved on the guide post from the inside to the outside. The first elastic reset member is a torsion spring 134. The trigger rod 135 includes a press-fit end and a trigger end that are perpendicularly connected to each other. One end of the torsion spring 134 is coiled on the guide post and fixedly connected to the guide post, and the other end is fixedly connected to the trigger end of the trigger rod 135.

[0051] Specifically, the end of the locking member 24 that is not connected to the female hinge frame 22 is bent toward the second movable member 21 to form a spring hook point 241 that cooperates with the hook groove 13111 on the locking spring 1311.

[0052] In specific implementation, when the satellite hinge is pressed, the angle between the mounting surfaces of the first movable part 11 and the second movable part 21 of the satellite hinge is 0°. Under the action of the torsion spring 134, the trigger rod 135 restricts the rotation of the trigger arm 133. The trigger arm 133 and the cam 1322 are relatively fixed. That is, the pressing end of the trigger rod 135 presses the trigger arm 133 under the restoring force of the first elastic reset member. Under the pressing force of the trigger rod 135, the trigger arm 133 drives the pressing assembly 132 to press the first elastic locking assembly 131, so that the locking end of the first elastic locking assembly 131 passes through the male hinge frame 12 and is located at the farthest end.

[0053] In practical implementation, during the satellite hinge deployment process, the main hinge frame 22 rotates around the hinge axis under the action of the driving spiral spring 25. That is, the push rod 23 and the spring hook point mounted on the main hinge frame 22 simultaneously rotate around the hinge axis, possessing a certain speed and impact force. When the push rod 23 contacts the trigger end of the trigger rod 135, the speed and impact force of the push rod 23 counteract the torque of the torsion spring 134 restricting the press-fit end of the trigger rod 135, causing the trigger rod 135 to rotate around the axis under the action of the push 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 from constraint. At this time, the spring hook point 241 pushes open the locking spring 1311, but does not lock it. After the cam 1322 releases the constraint, the drive spring 1312 drives the locking spring 1311 to hook the spring hook point 241, thereby locking the male hinge frame 12 and the female hinge frame 22 of the satellite hinge.

[0054] In practice, when the satellite hinge is in the locked state after being unfolded, the locking spring 1311 exerts a pulling force on the spring hook point 241 under the restoring force of the driving compression spring 1312, thereby achieving a stable locking connection.

[0055] 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A satellite hinge with strong locking function, characterized in that, include: The first movable component includes a first movable part, a male hinge frame fixedly connected to the first movable part, and a first limiting component that cooperates with the male hinge frame. The first limiting component includes a first elastic locking component disposed in the male hinge frame, a press-fit component disposed in the male hinge frame and rotatably connected to the male hinge frame, a trigger arm disposed on the side wall of the male hinge frame and fixedly connected to the press-fit component, and a trigger rod disposed on the side wall of the male hinge frame and fixedly connected to the male hinge frame through a first elastic reset member; the press-fit end of the trigger rod presses against the trigger arm under the reset force of the first elastic reset member, and the trigger arm drives the press-fit component to press against the first elastic locking component under the press-fit force of the trigger rod, so that the locking end of the first elastic locking component passes through the male hinge frame and is located at the farthest end; The second movable component includes a second movable part and a female hinge frame fixedly connected to the second movable part, a top rod disposed on the female hinge frame at a position corresponding to the trigger end of the trigger rod, and a locking member disposed on the female hinge frame and locked in place with the locking end of the first elastic locking component. The female hinge frame and the male hinge frame are hinged together by a hinge shaft, and a second elastic reset member disposed on the hinge shaft is engaged with the female hinge frame.

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 pressed end of the locking spring is connected to the pressing assembly, and the locking end of the locking spring passes through the male hinge frame in a direction away from the first movable assembly. The locking end of the locking spring is provided with a hook groove. The driving spring is sleeved around the locking spring, and the two ends of the driving spring abut against the male hinge frame and the pressed end of the locking spring, respectively.

3. The satellite hinge with strong locking function according to claim 2, characterized in that: The press-fit assembly includes a rotating shaft on the male hinge frame near the press-fit end and a teardrop-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 sidewall 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: The male hinge frame has a guide post on one side where the trigger arm is located, and the first elastic reset member and the trigger rod are sequentially sleeved on the guide post from the inside to the outside; The first elastic reset element is a torsion spring, and the trigger rod includes a press-fit end and a trigger end that are perpendicularly connected to each other; one end of the torsion spring is coiled on the guide post and fixedly connected to the guide post, 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 frame is bent toward the second movable component to form a spring hook point that cooperates with 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 reset component is a drive spiral spring, one end of which is fixedly connected to the hinge shaft, and the other end is fixedly connected to the mother hinge frame.

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