A low-impact trigger locking hinge

Abstract

The present invention relates to a low-impact trigger locking hinge, which includes a male hinge, a female hinge, a buffer device, and a trigger locking device. The male hinge and the female hinge are hinged through a rotary shaft assembly. One end of the buffer device is connected to the inner side of the female hinge, and both ends of the trigger locking device are respectively connected to the inner side of the male hinge. Among them, when the male hinge and the female hinge are in the closed state and the trigger locking device is not triggered, the trigger end of the trigger locking device protrudes from at least one side wall of the male hinge. During the unfolding process of the male hinge and the female hinge, the other end of the buffer device abuts against the housing to perform unfolding buffering, and the female hinge triggers the trigger end of the trigger locking device. When the male hinge and the female hinge are in the unfolded state, the mounting hole on the side wall of the male hinge coincides with the locking hole on the side wall of the female hinge, and the locking end of the trigger locking device extends into the mounting hole and the locking hole for locking. In the unfolding process of the hinge of the present invention, the buffer device can absorb the acting force released by the male hinge and the female hinge, thereby reducing the impact force after unfolding, and the strength after the male hinge and the female hinge are locked is high.

Description

Technical Field

[0001] The present invention relates to the field of space folding and unfolding mechanisms, and particularly to a low-impact trigger locking hinge. Background Art

[0002] As a common and frequently used deployable mechanism in the aerospace field, the hinge has extensive application value. For space deployment mechanisms, according to their deployment drive methods, they can be divided into passive drive and active drive. Among them, the passive drive forms mainly include volute spring drive, torsion spring drive, constant torque spring drive, etc. Due to the advantages of high reliability and extreme simplicity of passive drive, it is widely used in aerospace folding and unfolding mechanisms. However, since the torque release after passive drive deployment is relatively fast, it causes a large impact on the deployed parts after deployment, seriously affecting the accuracy after deployment. Therefore, how to reduce the deployment impact of the hinge has become an urgent problem to be solved. Summary of the Invention

[0003] In order to solve one or several of the technical problems existing in the prior art, the present invention provides a low-impact trigger locking hinge.

[0004] The technical solution of the present invention to solve the above technical problems is as follows: A low-impact trigger locking hinge includes a male hinge, a female hinge, a buffer device, and a trigger locking device. The male hinge and the female hinge are hinged through a rotary shaft assembly. One end of the buffer device is connected to the inner side of the female hinge, and both ends of the trigger locking device are respectively connected to the inner side of the male hinge;

[0005] Wherein, when the male hinge and the female hinge are in the closed state and the trigger locking device is not triggered, the trigger end of the trigger locking device protrudes from at least one side wall of the male hinge;

[0006] During the unfolding process of the male hinge and the female hinge, the other end of the buffer device abuts against the trigger locking device for unfolding buffering, and the female hinge triggers the trigger end of the trigger locking device;

[0007] When the male hinge and the female hinge are in the unfolded state, the mounting hole on the side wall of the male hinge coincides with the locking hole on the side wall of the female hinge, and the locking end of the trigger locking device extends into the mounting hole and the locking hole for locking.

[0008] The beneficial effects of the present invention are as follows: By installing a buffer device on the inner side of the female hinge and a trigger locking device on the inner side of the male hinge, the male hinge and the female hinge can be respectively connected to object A and object B that need to be unfolded. During the unfolding process, the buffer device can absorb the acting force released by the male hinge and the female hinge, thereby reducing the impact force after unfolding and reducing the influence on the unfolded object due to the impact. By setting the trigger locking device, the strength after the male hinge and the female hinge are locked is high, and the hinge can be locked with a small trigger force.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Further, the buffer device includes a collision rod, a rotating seat and a flywheel. The rotating seat is fixed on the inner side wall of the female hinge. One end of the collision rod is sleeved inside the rotating seat and can axially move relative to the rotating seat. A buffer track is provided on the rotating seat. The flywheel is sleeved on the rotating seat. The flywheel is provided with a first elastic pin arranged radially through. One end of the first elastic pin is fixed on the outer peripheral side wall of the flywheel, and the other end is located in the buffer track. Both sides of the flywheel are elastically connected to the other end of the collision rod and the fixed end of the rotating seat through buffer springs respectively.

[0011] The beneficial effect of adopting the above further solution is that when the male hinge and the female hinge are unfolded at a certain angle, the collision rod on the female hinge first collides with the trigger locking device. Under the kinetic energy of the unfolding of the female hinge, the collision rod of the buffer device is compressed. Then, the buffer spring pushes the flywheel, so that the first elastic pin rotates along the buffer track, and thus the flywheel rotates in a buffered manner, thereby slowing down the unfolding of the male hinge and the female hinge. As the male hinge and the female hinge unfold, the trigger locking device on the male hinge is triggered, and the locking end of the trigger locking device enters the locking hole of the female hinge, realizing the locking of the male hinge and the female hinge. While reducing the impact during the unfolding process, the locking strength is high, and the hinge can be locked with a small trigger force. This hinge can be used for the synchronous unfolding of the solar wings of a spacecraft.

[0012] Further, a limiting groove is provided on the outer side wall of the rotating seat. The flywheel is also provided with a second elastic pin arranged radially through. One end of the second elastic pin is fixed on the outer peripheral side wall of the flywheel, and the other end is limited in the limiting groove or disengages from the limiting groove under the action of an external force.

[0013] The beneficial effect of adopting the above further solution is that by providing a limiting groove on the outer side wall of the rotating seat and arranging a second elastic pin on the flywheel, the end face of the second elastic pin can fit with the limiting groove on the rotating seat to ensure that the flywheel will not rotate under a certain external interference. In order to prevent the collision force from being too large after the trigger locking device and the collision rod come into contact, the buffer spring between the flywheel and the collision rod serves as the first-stage buffer spring. When the collision rod is continuously compressed, the other end of the second elastic pin in the flywheel disengages from the limiting groove. At this time, the flywheel rotates and axially moves along the axis of the rotating seat under the action of the first elastic pin and the external force. In order to further reduce the unfolding impact of the hinge, a second-stage buffer spring is also provided between the rotating seat and the flywheel, further reducing the unfolding impact of the hinge.

[0014] Further, the other end of the second elastic pin is spherical, and the limiting groove is a spherical groove.

[0015] The beneficial effects of adopting the above further solution are as follows: By providing a spherical surface and a spherical groove that cooperate with each other, while being able to perform limit, it is also easily separated under the action of a buffer spring.

[0016] Further, the axis of the second elastic pin coincides with the axis of the first elastic pin.

[0017] The beneficial effects of adopting the above further solution are as follows: The first elastic pin and the second elastic pin are arranged relatively, so that the rotating seat is uniformly stressed and has good structural stability.

[0018] Further, a limit groove is provided in the buffer track, and the other end of the first elastic pin is limited in the limit groove or disengages from the limit groove under the action of an external force.

[0019] The beneficial effects of adopting the above further solution are as follows: The first elastic pin can be self-limited in the limit groove to ensure that the flywheel does not rotate under a certain external interference.

[0020] Further, the buffer track is a spiral track.

[0021] The beneficial effects of adopting the above further solution are as follows: Adopting a spiral track is beneficial to the unfolding of the buffer hinge.

[0022] Further, the other end of the collision rod is coaxially and perpendicularly connected with a collision plate.

[0023] The beneficial effects of adopting the above further solution are as follows: By providing a collision plate, the contact area between the collision rod and the trigger locking device is increased, avoiding structural jamming.

[0024] Further, the trigger locking device includes a housing and a trigger pin, a locking pin and a trigger member assembled in the housing. The locking pin is a cylindrical structure with one end open and the other end blocked. The locking pin is sleeved in the housing and elastically connected to the housing through a first elastic member. The trigger pin is sleeved in the locking pin and connected to the blocked end of the locking pin through a second elastic member. A limit through hole is provided on the locking pin, and an annular limit groove is provided on the outer side wall of the trigger pin.

[0025] When the trigger pin is not triggered, the trigger member is located in the limit through hole and abuts against the inner side wall of the housing and the outer side wall of the trigger pin respectively, so that the locking pin is locked with the housing, and a part of the trigger pin extends out of the housing and the outer side of the locking pin. When the trigger pin is triggered by the side wall of the female hinge, the trigger pin axially moves into the locking pin, and the trigger member is simultaneously located in the limit through hole and the annular limit groove, releasing the locking between the locking pin and the housing, so that the locking pin and the trigger pin synchronously extend out of the housing and into the installation hole and the locking hole for locking.

[0026] The beneficial effects of adopting the above further solution are as follows: By setting the trigger locking device, when the trigger pin is triggered, the locking pin can lock both the male hinge and the female hinge simultaneously, resulting in high strength after the hinge is locked, and the hinge can be locked with a small trigger force.

[0027] Furthermore, the trigger locking device further includes a connecting sleeve. There are two each of the housing, the locking pin, the trigger pin, the second elastic member, and the trigger member. The two housings are respectively coaxially connected to both ends of the connecting sleeve. The two locking pins are respectively sleeved in the two housings. The two trigger pins are respectively sleeved in the two locking pins. Both ends of the first elastic member are respectively connected to the two locking pins.

[0028] The beneficial effects of adopting the above further solution are as follows: By arranging a set of locking pin, trigger pin, second elastic member, and trigger member on each side of the connecting sleeve, the two side walls of the male hinge and the two side walls of the female hinge can be locked and fixed, and the locking effect is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a top view structural schematic diagram of the low-impact trigger locking hinge of the present invention after being unfolded;

[0030] Figure 2 is Figure 1 the sectional structural schematic diagram of A-A of;

[0031] Figure 3 It is a three-dimensional structural schematic diagram of the low-impact trigger locking hinge of the present invention after being unfolded;

[0032] Figure 4 It is a three-dimensional structural schematic diagram of the low-impact trigger locking hinge of the present invention after being folded;

[0033] Figure 5 It is a three-dimensional structural schematic diagram of the male hinge of the present invention;

[0034] Figure 6 It is a three-dimensional structural schematic diagram of the female hinge of the present invention;

[0035] Figure 7 It is a front view structural schematic diagram of the buffer device of the present invention;

[0036] Figure 8 is Figure 7 the sectional structural schematic diagram of B-B in;

[0037] Figure 9 is Figure 7 the sectional structural schematic diagram of A-A in;

[0038] Figure 10Schematic diagram of the three-dimensional exploded structure of the buffer device of the present invention;

[0039] Figure 11 Schematic diagram of the front view structure of the trigger locking device of the present invention;

[0040] Figure 12 is Figure 11 Schematic diagram of the sectional structure of A-A in

[0041] Figure 13 Schematic diagram of the sectional structure of the trigger locking device of the present invention when the trigger pin is triggered;

[0042] Figure 14 Schematic diagram of the sectional structure of the trigger locking device of the present invention when the locking pin extends and locks;

[0043] Figure 15 Schematic diagram of the three-dimensional structure of the rotary shaft assembly of the present invention;

[0044] Figure 16 Schematic diagram of the front view structure of the rotary shaft assembly of the present invention;

[0045] Figure 17 is Figure 16 Schematic diagram of the sectional structure of A-A in

[0046] In the drawings, the list of components represented by each reference numeral is as follows:

[0047] 1. Male hinge; 11. First arm; 12. Anti-collision boss; 13. Mounting hole; 14. First rotary shaft hole;

[0048] 2. Female hinge; 21. Second arm; 22. Limiting boss; 23. Locking hole; 24. Second rotary shaft hole; 25. Collision groove; 26. Square hole;

[0049] 3. Buffer device; 31. Collision rod; 32. Rotating seat; 33. Flywheel; 34. Collision plate; 35. Buffer track; 36. Buffer spring; 37. Limiting groove; 38. First lock pin hole; 39. Second lock pin hole;

[0050] 4. First elastic pin; 41. First set screw; 42. First spring; 43. First lock pin;

[0051] 5. Second elastic pin; 51. Second set screw; 52. Second spring; 53. Second lock pin;

[0052] 6. Trigger locking device;

[0053] 61. Housing; 612. Limiting stepped surface; 613. First cylindrical section; 614. Second cylindrical section; 615. Connecting flange;

[0054] 62. Locking pin; 621. Second retaining ring; 622. Limit through hole; 623. Limit step; 624. Guide protrusion; 625. Conical surface; 626. First locking pin section; 627. Second locking pin section;

[0055] 63. Trigger pin; 631. Annular limit groove; 632. Limit groove surface; 633. Annular limit disk;

[0056] 64. Trigger member; 65. First elastic member; 66. Second elastic member; 67. Connecting sleeve;

[0057] 7. Rotating shaft assembly; 71. Rotating main shaft; 72. Volute spring ratchet shaft; 73. Third spring; 74. Square boss; 75. Adjusting retaining ring; 76. Ratchet; 77. Synchronous pulley connecting section;

[0058] 8. Synchronous pulley; 9. Volute spring; 91. Spring fixing column. Detailed implementation mode

[0059] The principles and features of the present invention will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0060] As Figures 1 to 17 shown, a low-impact trigger locking hinge in this embodiment includes a male hinge 1, a female hinge 2, a buffer device 3, and a trigger locking device 6. The male hinge 1 and the female hinge 2 are hinged through a rotating shaft assembly 7. One end of the buffer device 3 is connected to the inner side of the female hinge 2, and both ends of the trigger locking device 6 are respectively connected to the inner side of the male hinge 1;

[0061] Among them, when the male hinge 1 and the female hinge 2 are in the closed state and the trigger locking device 6 is not triggered, the trigger end of the trigger locking device 6 extends out from at least one side wall of the male hinge 1;

[0062] During the unfolding process of the male hinge 1 and the female hinge 2, the other end of the buffer device 3 abuts against the housing 61 for unfolding buffering, and the female hinge 2 triggers the trigger end of the trigger locking device 6;

[0063] When the male hinge 1 and the female hinge 2 are in the unfolded state, the mounting hole 13 on the side wall of the male hinge 1 coincides with the locking hole 23 on the side wall of the female hinge 2, and the locking end of the trigger locking device 6 extends into the mounting hole 13 and the locking hole 23 for locking.

[0064] The male hinge and the female hinge are respectively connected to the object A and the object B to be unfolded. When the object A and the object B need to be unfolded, the hinge unfolds and locks under the action of its own volute spring. A trigger locking device and a spring fixing column are installed on the male hinge, and a buffer device is installed on the female hinge. The male hinge and the female hinge are hinged through a rotating shaft assembly and unfold under the action of their own volute springs. When the hinge unfolds at a certain angle, the buffer device on the female hinge first collides with the trigger locking device on the male hinge. Under the kinetic energy acting force of the unfolding of the female hinge, the collision rod of the buffer device is compressed, slowing down the unfolding speed of the male hinge and the female hinge and reducing the impact of the unfolding of the male hinge and the female hinge. As the male hinge and the female hinge unfold, the trigger locking device on the male hinge is triggered, and the locking pin in the trigger locking device extends out and enters the locking hole of the female hinge to realize the locking of the male hinge and the female hinge. This hinge reduces the impact during the unfolding process and greatly reduces the influence on the unfolded objects A and B.

[0065] Specifically, as Figure 5 shown, the male hinge 1 of this embodiment is one of the main structures of the hinge. An installation boss for connecting to the object A is reserved on the male hinge, and an assembly hole is reserved on the installation boss for connecting to the object A; a first support arm 11 is provided on one side of the installation boss, and two first support arms 11 are arranged in parallel for connecting to the female hinge. Installation holes 13 and first rotating shaft holes 14 are respectively formed on the two first support arms 11; in order to prevent the male hinge and the female hinge from unfolding without limit, anti-collision bosses 12 that cooperate with the limit bosses 22 of the second support arms 21 of the female hinge are respectively provided on the outer side surfaces of the first support arms 11. The cooperation between the limit bosses 22 and the anti-collision bosses 12 limits the continuous unfolding of the male hinge and the female hinge. Both ends of the trigger locking device 6 are respectively installed around the installation holes 13 on the two first support arms 11, and the trigger end and the locking end of the trigger locking device 6 can both extend out from the installation holes 13. A threaded hole for connecting to the spring fixing column 91 is reserved on one side of one of the first support arms 11 of the male hinge 1, and the threaded holes are symmetrically arranged on both sides of the male hinge.

[0066] As Figure 6As shown, the female hinge 2 of this embodiment is one of the main structures of the hinge. An installation boss for connecting to the object B is reserved on the female hinge 2, and an assembly hole is reserved on the installation boss for connecting to the object B; two side walls provided on one side of the installation boss are respectively the second support arms 21. The two second support arms 21 are arranged in parallel. A locking hole 23 and a second rotation shaft hole 24 are respectively formed on the two second support arms 21. The male hinge 1 and the female hinge 2 are assembled through a rotation shaft assembly 7. The two second support arms 21 of the female hinge 2 are respectively located outside the two first support arms 11 of the male hinge 1. The first rotation shaft hole 14 and the second rotation shaft hole 24 are correspondingly arranged and connected through the rotation shaft assembly 7. One of the two second rotation shaft holes 24 is processed into the form of a square hole 26 for cooperating with the square boss 74 of the rotation shaft assembly. The buffer device 3 on the female hinge 2 is installed between the two second support arms 21, and the buffer direction of the buffer device 3 is arranged in parallel with the two second support arms 21. When the male hinge 1 and the female hinge 2 are unfolded, the axis of the installation hole 13 on the first support arm 11 coincides with the axis of the locking hole 23 on the second support arm, enabling both the trigger pin 63 and the locking pin 62 to enter the installation hole 13 and the locking hole 23 for locking. The end faces of the two second support arms 21 of the female hinge 2 form a limiting boss 22 that cooperates with the anti-collision boss 12 on the outer side surface of the first support arm 11 of the male hinge 1. A collision groove 25 is formed on the inner side surface of the limiting boss 22. When the male hinge and the female hinge are closed, the first support arm 11 of the male hinge 1 can enter between the two second support arms 21 through the collision groove 25, facilitating the unfolding of the hinge.

[0067] As Figures 7 to 10As shown in the figure, a specific solution of the buffer device 3 in this embodiment includes a collision rod 31, a rotating seat 32, and a flywheel 33. The rotating seat 32 is fixed on the inner side wall of the female hinge 2. One end of the rotating seat 32 is provided with a connecting flange for connecting with the inner side wall of the female hinge 2. One end of the collision rod 31 is sleeved inside the rotating seat 32 and can axially move relative to the rotating seat 32. A buffer track 35 is formed on the rotating seat 32. The flywheel 33 is sleeved on the rotating seat 32. A first elastic pin 4 is arranged radially through the flywheel 33. One end of the first elastic pin 4 is fixed on the outer peripheral side wall of the flywheel 33, and the other end is located inside the buffer track 35. Both sides of the flywheel 33 are elastically connected to the other end of the collision rod 31 and the fixed end of the rotating seat 32 through buffer springs 36 respectively. When the male hinge 1 and the female hinge 2 are unfolded at a certain angle, the collision rod 31 on the female hinge 2 first collides with the trigger locking device 6. Under the kinetic energy of the unfolding of the female hinge 2, the collision rod 31 of the buffer device 3 is compressed. Then, the buffer spring 36 pushes the flywheel 33, causing the first elastic pin 4 to rotate along the buffer track 35, and further making the flywheel 33 buffer and rotate, thereby slowing down the unfolding of the male hinge 1 and the female hinge 2. As the male hinge 1 and the female hinge 2 unfold, the trigger locking device 6 on the male hinge 1 is triggered, and the locking end of the trigger locking device 6 enters the locking hole 23 of the female hinge 2, realizing the locking of the male hinge 1 and the female hinge 2. While reducing the impact during the unfolding process, the locking strength is high, and the hinge can be locked with a small trigger force. This hinge can be used for the synchronous unfolding of the solar wings of a spacecraft.

[0068] Specifically, as Figure 9 and Figure 10 shown in the figure, the first elastic pin 4 in this embodiment includes a first set screw 41, a first spring 42, and a first locking pin 43. A first locking pin hole 38 is formed radially on the flywheel 33. The first set screw 41 is fixed in the first locking pin hole 38 and is fixed at a position close to the outer peripheral side of the flywheel 33 in the first locking pin hole 38. Both ends of the first spring 42 are connected to the first set screw 41 and the first locking pin 43 respectively, and the first locking pin 43 is located inside the buffer track 35. The first locking pin 43 is always in contact with the buffer track 35 under the action of the first spring 42.

[0069] In order to ensure that the flywheel 33 does not rotate under a certain external interference in this embodiment, the following two design solutions can be adopted:

[0070] Design solution one, as Figure 9 and Figure 10As shown, a limiting groove 37 is provided on the outer side wall of the rotating seat 32, and a second elastic pin 5 is also provided on the flywheel 33, and one end of the second elastic pin 5 is fixed on the outer peripheral side wall of the flywheel 33, and the other end is limited in the limiting groove 37 or escapes from the limiting groove 37 under the action of external force. By providing the limiting groove 37 on the outer side wall of the rotating seat 32 and arranging the second elastic pin 5 on the flywheel 33, the end face of the second elastic pin 5 can be fitted with the limiting groove 37 on the rotating seat 32, ensuring that the flywheel 33 will not rotate when subjected to certain external interference. In order to prevent the collision force after the trigger locking device 6 and the collision rod 31 from being too large, the buffer spring 36 between the flywheel 33 and the collision rod 31 serves as a first-stage buffer spring. When the collision rod 31 is continuously compressed, the other end of the second elastic pin 5 in the flywheel 33 disengages from the limit groove 37. At this time, the flywheel 33 rotates and translates axially along the axis of the rotating seat 32 under the action of the first elastic pin 4 and external force. In order to further reduce the unfolding impact of the hinge, a second-stage buffer spring is also arranged between the rotating seat and the flywheel to further reduce the unfolding impact of the hinge.

[0071] A preferred structure of design scheme 1 is as follows: Figure 9 As shown, the other end of the second elastic pin 5 is a spherical surface, and the limiting groove 37 is a ball groove. By providing the spherical surface and the ball groove that cooperate with each other, it is possible to limit the position while being easily separated by the force of the buffer spring. The axis of the second elastic pin 5 coincides with the axis of the first elastic pin 4. The first elastic pin 4 and the second elastic pin 5 are arranged relative to each other, so that the rotating seat is evenly stressed and has good structural stability.

[0072] like Figure 9 and Figure 10 As shown, the second elastic pin 5 of design scheme one includes a second top screw 51, a second spring 52 and a second locking pin 53. A radially arranged second locking pin hole 39 is opened on the flywheel 33. The second top screw 51 is fixed in the second locking pin hole 39 and fixed at a position of the second locking pin hole 39 close to the outer peripheral side of the flywheel 33. The two ends of the second spring 52 are respectively connected to the second top screw 51 and the second locking pin 53, and the second locking pin 53 is located in the limiting groove 37.

[0073] Design solution 2: a limiting groove 37 is provided in the buffer track 35, and the other end of the first elastic pin 4 is limited in the limiting groove 37 or is released from the limiting groove 37 under the action of external force. The first elastic pin 4 can be limited in the limiting groove 37 by itself to ensure that the flywheel 33 does not rotate when subjected to certain external interference.

[0074] like Figure 10As shown, a preferred solution for the buffer track 35 of this embodiment is that the buffer track 35 is a spiral track. Using a spiral track is beneficial for the unfolding of the buffer hinge.

[0075] As Figure 7 , Figure 8 and Figure 10 As shown, a preferred solution for the collision rod 31 of this embodiment is that the other end of the collision rod 31 is coaxially and vertically connected with a collision plate 34. By setting the collision plate, the contact area between the collision rod and the trigger locking device is increased, avoiding structural jamming.

[0076] As Figures 11 to 14 As shown, a specific solution for the trigger locking device 6 of this embodiment is that the trigger locking device 6 includes a housing 61 and a trigger pin 63, a locking pin 62, and a trigger member 64 assembled in the housing 61. The locking pin 62 is a cylindrical structure with one end open and the other end blocked. The other end of the locking pin 62 is blocked by a second retaining ring 621. The locking pin 62 is sleeved in the housing 61 and elastically connected to the housing 61 through a first elastic member 65. The trigger pin 63 is sleeved in the locking pin 62 and connected to the blocked end of the locking pin 62 through a second elastic member 66. A limiting through hole 622 is formed in the locking pin 62, and an annular limiting groove 631 is formed on the outer side wall of the trigger pin 63. When the trigger pin 63 is not triggered, the trigger member 64 is located in the limiting through hole 622 and abuts against the inner side wall of the housing 61 and the outer side wall of the trigger pin 63 respectively, locking the locking pin 62 and the housing 61. A part of the trigger pin 63 extends out of the housing 61 and the outside of the locking pin 62. When the trigger pin 63 is triggered by the side wall of the female hinge 2, the trigger pin 63 moves axially into the locking pin 62, and the trigger member 64 is simultaneously located in the limiting through hole 622 and the annular limiting groove 631, releasing the locking between the locking pin 62 and the housing 61, so that the locking pin 62 and the trigger pin 63 synchronously extend out of the outside of the housing 61 and extend into the mounting hole 13 and the locking hole 23 for locking. By setting the trigger locking device, when the trigger pin is triggered, the locking pin can lock the male hinge and the female hinge at the same time, making the strength of the hinge high after locking, and the hinge can be locked with a small trigger force.

[0077] Among them, as Figures 12 to 14As shown, the housing 61 can be selected as a left - hand and right - hand thread nut. On the inner side wall of the housing 61 in this embodiment, there is a limiting stepped surface 612, and the limiting stepped surface 612 is an annular inclined surface. From the sealing end to the open end of the housing 61, the inner diameter of the limiting stepped surface 612 gradually decreases; when the trigger pin 63 is not triggered, the trigger member 64 is located within the limiting through - hole 622 and abuts against the limiting stepped surface 612 and the outer side wall of the trigger pin 63 respectively. By providing the annular inclined surface, the trigger member is simultaneously squeezed by the annular inclined surface and the outer side wall of the trigger pin within the limiting through - hole, so that the locking pin 62 is limited within the housing 61. When the trigger pin 63 is triggered, the annular inclined surface can also push the trigger member, pushing the trigger member into the annular limiting groove, releasing the restriction between the inner side wall of the housing 61 and the locking pin 62, enabling the locking pin 62 to move axially out of the housing 61 along the housing 61.

[0078] As Figures 12 to 14 As shown, the housing 61 in this embodiment adopts a cylindrical structure. The inner side wall of the housing 61 is divided into a first cylindrical section 613 and a second cylindrical section 614 by the limiting stepped surface 612, and the inner diameter of the first cylindrical section 613 is larger than that of the second cylindrical section 614. The free end of the trigger pin 63 in this embodiment is provided with a ball head. During use, the ball head can be in frictional contact with the second arm 21 of the female hinge 2, reducing the contact area and having a small frictional resistance, which is convenient for the second arm of the female hinge 2 to trigger the trigger pin 63 to move into the housing 61.

[0079] As Figures 12 to 14As shown, on the side of the annular limiting groove 631 of this embodiment close to the plugging end of the locking pin 62 is a limiting groove surface 632, and the limiting groove surface 632 is an annular inclined surface. From the plugging end to the open end of the locking pin 62, the outer diameter of the limiting groove surface 632 gradually decreases; when the trigger pin 63 is not triggered, the trigger member 64 is located within the limiting through hole 622 and abuts against the inner side wall of the housing 61 and the limiting groove surface 632 respectively. By setting a limiting groove surface with a gradually decreasing outer diameter, when the trigger pin is triggered, the trigger member 64 is pushed into the annular limiting groove under the action of the limiting step surface. The limiting groove surface of the annular limiting groove is also an inclined surface, and the trigger member 64 is simultaneously subjected to the extrusion action of the inclined limiting groove surface, the limiting through hole, and the inner side wall of the open end of the housing 61, so that the trigger member 64 is limited within the limiting through hole and the annular limiting groove, releasing the restriction between the inner side wall of the housing and the locking pin, enabling the locking pin to move axially outward of the housing. A limiting step 623 is provided on the inner side wall of the locking pin 62, the limiting step 623 is located between the limiting through hole 622 and the plugging end of the locking pin 62, and an annular limiting disk 633 is provided at one end of the trigger pin 63 located within the locking pin 62, and the annular limiting disk 633 abuts against the limiting step 623. By setting the limiting step, the trigger pin can be limited to prevent the trigger pin from disengaging from the locking pin.

[0080] Specifically, as Figures 12 to 14 shown, the locking pin 62 of this embodiment is divided into a first locking pin section 626 and a second locking pin section 627 by the limiting step 623. The inner diameter of the first locking pin section 626 is smaller than the inner diameter of the second locking pin section 627. The limiting through hole 622 is located on the first locking pin section 626, and the guiding protrusion 624 is located on the outer side wall of the second locking pin section 627. A plurality of limiting through holes 622 are provided in the locking pin 62 of this embodiment along the circumferential direction, and a trigger member 64 is provided in each limiting through hole 622. By providing a plurality of limiting through holes, the trigger member 64 can be effectively and stably limited. The outer side wall of the open end of the locking pin 62 of this embodiment is a conical surface 625. A guiding protrusion 624 is provided on the outer side wall of the locking pin 62 of this embodiment, and the guiding protrusion 624 abuts against the inner side wall of the housing 61; the first elastic member 65 is sleeved on one end of the locking pin 62 for plugging and abuts against the guiding protrusion 624. The guiding protrusion 624 can be an annular protrusion or spaced protrusions. The guiding protrusion is adopted.

[0081] As Figures 12 to 14As shown, the first elastic member 65 and the second elastic member 66 of this embodiment are both springs. The first elastic member 65 and the second elastic member 66 can always remain in a compressed state to provide an elastic force. A connecting flange 615 is provided on the outer side wall of the housing 61 of this embodiment, and the housing 61 can be fixed to the two first arms 11 of the male hinge 1 through the connecting flange 615. The trigger member 64 can be a spherical member.

[0082] like Figures 11 to 14 As shown, a preferred solution of the trigger locking device 6 of this embodiment is that the trigger locking device 6 also includes a connecting sleeve 67, the housing 61, the locking pin 62, the trigger pin 63, the second elastic member 66 and the trigger member 64 are respectively two, the two housings 61 are coaxially connected to the two ends of the connecting sleeve 67, the two locking pins 62 are respectively sleeved in the two housings 61, the two trigger pins 63 are respectively sleeved in the two locking pins 62, and the two ends of the first elastic member 65 are respectively connected to the two locking pins 62. By arranging a set of locking pins, trigger pins, second elastic members and trigger members on both sides of the connecting sleeve, both side walls of the male hinge and the two side walls of the female hinge can be locked and fixed, and the locking effect is stable and reliable.

[0083] like Figures 15 to 17 As shown, the rotary shaft assembly 7 of this embodiment is the rotation center of the male hinge 1 and the female hinge 2, mainly to ensure the rotation movement of the male hinge 1 and the female hinge 2, and at the same time, it is also necessary to transmit the force of the spiral spring 9 to the male hinge 1 and the female hinge 2. The rotary shaft assembly 7 includes a rotary main shaft 71, a spiral spring ratchet shaft 72, a third spring 73, a square boss 74, an adjustment retaining ring 75, a ratchet 76 and a synchronous wheel connecting section 77. The rotary main shaft 71 is provided with a square boss 74, which can be matched with the square hole 26 on the second arm 21 of the female hinge 2. One end of the rotary main shaft 7 is provided with a synchronous wheel connecting section 77, and the other end of the rotary main shaft 7 is provided with a spiral spring ratchet shaft 72 for fixing with the inner ring of the spiral spring 9. The spiral spring ratchet shaft 72 A ratchet 76 that can move axially is meshed on it. The ratchet 76 is sleeved on the rotating main shaft 71 and abuts against the outer surface of the second arm 21 of the mother hinge 2 through the third spring 73. Axially moving the ratchet 76 can separate the ratchet 76 from the spiral spring ratchet shaft 72, thereby realizing the rotation of the spiral spring ratchet shaft 72 and the adjustment of the torque of the spiral spring 9. At the same time, the synchronous wheel connecting section 77 on the rotating main shaft 71 can be connected to the synchronous wheel 8, and the synchronous wheel 8 can be used to connect other objects through ropes, etc. to achieve synchronous expansion.

[0084] The working principle of the low-impact trigger locking hinge in this embodiment is as follows. When the male hinge 1 and the female hinge 2 are in the closed state and the trigger locking device 6 is not triggered, the trigger pin of the trigger locking device 6 protrudes from at least one side wall of the male hinge 1, and the locking pin 62 is located inside the male hinge 1. During the unfolding process of the male hinge 1 and the female hinge 2, the collision rod abuts against the housing 61 for unfolding buffering. The axial movement of the collision rod 31 squeezes the flywheel 33 by using the buffer spring, so that the ball head end of the second locking pin of the second elastic pin on the flywheel disengages from the limiting groove 37 on the rotating seat 32. The first locking pin of the first elastic pin on the flywheel axially moves while rotating along the buffer track 35 on the rotating seat 32. At the same time, the flywheel 33 squeezes another buffer spring to buffer the unfolding impact. The second branch arm 21 of the female hinge 2 enters between the two first branch arms 11, triggering the trigger pin of the trigger locking device 6, causing the trigger pin 63 to retract into the housing 61. At the same time, the trigger locking pin 62 is triggered, enabling the locking pin 62 to protrude from the housing 61 synchronously with the trigger pin 63. When the male hinge 1 and the female hinge 2 are in the unfolded state, the mounting hole 13 on the side wall of the male hinge 1 coincides with the locking hole 23 on the side wall of the female hinge 2, and the locking end of the trigger locking device 6 extends into the mounting hole 13 and the locking hole 23 for locking.

[0085] In this embodiment, by installing a buffer device inside the female hinge and a trigger locking device inside the male hinge, the male hinge and the female hinge can be respectively connected to the object A and the object B to be unfolded. During the unfolding process, the buffer device can absorb the acting force released by the male hinge and the female hinge, thereby reducing the impact force after unfolding and reducing the influence on the unfolded object due to the impact. By setting the trigger locking device, the strength after the male hinge and the female hinge are locked is high, and the hinge can be locked with a small trigger force. This hinge can be used for the synchronous unfolding of the solar wings of a spacecraft.

[0086] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present invention.

[0087] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0088] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0090] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0091] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A low-impact trigger locking hinge, characterized in that, It includes a male hinge, a female hinge, a buffer device and a trigger locking device. The male hinge and the female hinge are hinged through a rotary shaft assembly. One end of the buffer device is connected to the inner side of the female hinge, and both ends of the trigger locking device are respectively connected to the inner side of the male hinge; Wherein, when the male hinge and the female hinge are in the closed state and the trigger locking device is not triggered, the trigger end of the trigger locking device protrudes from at least one side wall of the male hinge; During the unfolding process of the male hinge and the female hinge, the other end of the buffer device abuts against the trigger locking device for unfolding buffering, and the female hinge triggers the trigger end of the trigger locking device; When the male hinge and the female hinge are in the unfolded state, the mounting hole on the side wall of the male hinge coincides with the locking hole on the side wall of the female hinge, and the locking end of the trigger locking device extends into the mounting hole and the locking hole for locking; The buffer device includes a collision rod, a rotating seat and a flywheel. The rotating seat is fixed on the inner side wall of the female hinge. One end of the collision rod is sleeved inside the rotating seat and can axially move relative to the rotating seat. A buffer track is provided on the rotating seat. The flywheel is sleeved on the rotating seat. The flywheel is provided with a first elastic pin arranged radially through. One end of the first elastic pin is fixed on the outer peripheral side wall of the flywheel, and the other end is located in the buffer track. Both sides of the flywheel are elastically connected to the other end of the collision rod and the fixed end of the rotating seat through buffer springs respectively; The trigger locking device includes a housing and a trigger pin, a locking pin and a trigger piece assembled in the housing. The locking pin is a cylindrical structure with one end open and the other end blocked. The locking pin is sleeved in the housing and elastically connected to the housing through a first elastic member. The trigger pin is sleeved in the locking pin and connected to the blocked end of the locking pin through a second elastic member. A limiting through hole is provided on the locking pin, and an annular limiting groove is provided on the outer side wall of the trigger pin; The male hinge is reserved with a mounting boss for connecting with object A; the female hinge is reserved with a mounting boss for connecting with object B; When the trigger pin is not triggered, the trigger piece is located in the limiting through hole and abuts against the inner side wall of the housing and the outer side wall of the trigger pin respectively, so that the locking pin is locked with the housing, and the trigger pin partially protrudes out of the housing and the outside of the locking pin. When the trigger pin is triggered by the side wall of the female hinge, the trigger pin axially moves into the locking pin, and the trigger piece is simultaneously located in the limiting through hole and the annular limiting groove, releasing the locking between the locking pin and the housing, so that the locking pin and the trigger pin synchronously protrude out of the housing and extend into the mounting hole and the locking hole for locking.

2. The low-impact trigger locking hinge according to claim 1, wherein A limiting groove is provided on the outer side wall of the rotating seat. The flywheel is also provided with a second elastic pin arranged radially through. One end of the second elastic pin is fixed on the outer peripheral side wall of the flywheel, and the other end is limited in the limiting groove or disengages from the limiting groove under the action of an external force.

3. The low-impact trigger locking hinge according to claim 2, wherein, The other end of the second elastic pin is spherical, and the limiting groove is a spherical groove.

4. The low-impact trigger locking hinge according to claim 2, wherein The axis of the second elastic pin coincides with the axis of the first elastic pin.

5. The low-impact trigger locking hinge according to claim 1, wherein A limiting groove is formed in the buffer track, and the other end of the first elastic pin is limited in the limiting groove or disengages from the limiting groove under the action of an external force.

6. A low-impact trigger locking hinge according to any one of claims 1 to 5, characterized in that The buffer track is a spiral track.

7. A low-impact trigger locking hinge according to any one of claims 1 to 5, characterized in that, The other end of the collision rod is coaxially and perpendicularly connected with a collision plate.

8. The low-impact trigger locking hinge according to claim 1, characterized in that, The trigger locking device further includes a connecting sleeve. The housing, the locking pin, the trigger pin, the second elastic member, and the trigger member are respectively two. The two housings are respectively coaxially connected to both ends of the connecting sleeve. The two locking pins are respectively sleeved in the two housings. The two trigger pins are respectively sleeved in the two locking pins. Both ends of the first elastic member are respectively connected to the two locking pins.

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