CN218703983U - Four-point locking satellite-rocket separation synchronous unlocking device - Google Patents

Abstract

The utility model discloses a four-point locking satellite-rocket separation synchronous unlocking device, which comprises a driving mechanism, a transmission mechanism and a locking and unlocking mechanism, wherein the driving mechanism comprises a pin head which can controllably stretch according to an electric signal; the transmission mechanism comprises a locking disc and four pin pulling assemblies, the locking disc is controllably and rotatably arranged, pin holes are formed in the outer circumferential surface of the locking disc, pin heads are matched with the pin holes, and the pin pulling assemblies are uniformly and rotatably arranged on the locking disc; the four locking and unlocking mechanisms are uniformly arranged and comprise locking components and unlocking components, the outer ends of the locking components are used for being connected with a satellite, a pretightening force adjusting piece is arranged between the locking components and the satellite, the inner ends of the unlocking components are clamped with the locking components, and the outer ends of the unlocking components extend out of the second cavity and are connected with the pin pulling component. The utility model discloses, the revolute pair resistance is minimum, and the action is smooth, and simple structure has guaranteed the structural reliability for satellite separation process gesture is stable, increases product reliability, and the assembly degree of difficulty is low.

Description

Four-point locking satellite-rocket separation synchronous unlocking device

Technical Field

The utility model relates to a satellite technology field, concretely relates to synchronous unlocking device of four-point locking star-arrow separation.

Background

The traditional satellite separation mostly adopts a scheme of discretely distributed initiating explosive device point type and butt-joint frame type belt connection separation, the former has large separation impact and low synchronous index, and the latter has large additional mass. And impact generated by separation can greatly influence the separation attitude of the satellite, so that the satellite cannot enter the orbit according to the set flight attitude, and harmful gas generated by gunpowder combustion or explosion can pollute optical instruments and the like.

At present, a separation device for a micro/nano satellite is commonly provided with a (PicoSatellite Orbital receiver) POD device, a modularized low-impact linkage type satellite-arrow separation device and a multi-point compression and synchronous release satellite-arrow adapter. The POD device has high separation quality, and accounts for more than 50% of the weight of the micro-nano satellite, so that extra emission cost is added for satellite emission. Although the volume and weight of the modularized low-impact linkage type satellite-rocket separation device are optimized, the guide rail type pushing-off satellite mode is adopted, the risk of blocking exists in the separation process, the requirement on the mass center of a load is extremely high, meanwhile, the elastic force of each pushing-off spring is strictly required, the assembly and processing difficulty of the device is greatly increased, and the consistency and the reliability of products are hardly guaranteed. The separating device is also provided with a multi-point compression and synchronous release satellite and rocket adapter, the device solves the problem of synchronous unlocking, but the unlocking mechanism is extremely complex, and relates to various connecting rods and various driving combinations, so that the difficulty is brought to module processing, the processing precision is required to be extremely high, in addition, the assembly difficulty is increased due to the combination of various connecting rods, and the inconvenience is brought to engineering application; meanwhile, the unlocking device of the separating mechanism is a memory alloy pin puller, the pin puller is extremely difficult to produce and assemble, and the problems of pin pulling stroke reduction and insufficient pretightening force can occur along with the time.

The existing multipoint compression synchronous release satellite-rocket adapter is complex in structure and high in processing difficulty, and in addition, the processing and assembling difficulty of the memory alloy pin puller of the core unlocking assembly is extremely high, so that the problems of repeated unlocking, reduced unlocking performance and insufficient pre-tightening under the condition of long-time use exist.

Therefore, the existing multipoint compression synchronous release satellite-rocket adapter has the problems of complex structure and unstable unlocking performance for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that there is the problem that the structure is complicated, the unblock performance can not remain stable for a long time in present multiple spot compresses tightly the star arrow adapter of synchronous release.

In order to solve the technical problem, the utility model provides a four-point locking star and arrow separation synchronization unlocking device, include:

the driving mechanism comprises a pin head which can stretch and retract controllably according to an electric signal;

the transmission mechanism comprises a locking disc and four pin pulling assemblies, the locking disc is controllably and rotatably arranged, pin holes are formed in the outer circumferential surface of the locking disc, pin heads are matched with the pin holes, the pin pulling assemblies are uniformly and rotatably arranged on the locking disc, and each pin pulling assembly is a connecting rod mechanism; and the number of the first and second groups,

the locking and unlocking mechanisms are arranged into four uniformly arranged mechanisms and comprise locking components and unlocking components, the locking components are movably arranged in the first cavity, the outer ends of the locking components are used for being connected with a satellite, and pretightening force adjusting pieces are arranged between the locking components and the satellite; the unlocking assembly is movably arranged in the second cavity, the inner end of the unlocking assembly is clamped with the locking assembly, the outer end of the unlocking assembly extends out of the second cavity and is connected with the pin pulling assembly, and the length directions of the first cavity and the second cavity are vertical;

the driving mechanism controls the pin head to contract, the locking disc loses limiting and is controlled to rotate, the pin pulling assembly is driven to move, the unlocking assembly stretches out and keeps away from the acting force of the pin pulling assembly, the locking assembly is unlocked, and the satellite is released.

In another preferred embodiment, the locking assembly comprises:

the inner end of the lock catch is provided with an expansion part, and the outer end of the lock catch is used for being connected with a satellite;

the sliding block is arranged in the first cavity in a sliding manner; and the number of the first and second groups,

the connecting piece, the connecting piece includes locking connecting rod and lock hook, the one end of locking connecting rod is rotated and is located the slider, the other end is rotated and is located the lock hook, the lock hook is equipped with and rotates the position and locate in order to rotate the inner wall of first cavity, the lock hook deviates from the one end of locking connecting rod with the locking of expansion portion or break away from each other.

Further, in the above embodiment, the locking assembly includes a mounting plate, the mounting plate is fixed to the outer end of the lock catch through the pretightening force adjuster, and the mounting plate is provided with a plurality of mounting holes for connecting to a satellite.

Or, further, in the above embodiment, a side surface of the slider facing the latch is provided with a groove to mount a release elastic member, and the release elastic member abuts between the slider and the first cavity.

Or, further, in the above embodiment, a side surface of the slider facing the unlocking assembly is provided with a limiting groove to engage with an inner end of the unlocking assembly, so as to limit the slider.

Or, further, in the above embodiment, one end of the lock hook is an inverted L-shaped hook head to hook the expanded portion in the locked state, and the other end of the lock hook is a U-shaped arm, and the U-shaped arm is rotatably connected to the locking link.

In another preferred embodiment, the unlocking assembly includes an unlocking elastic member and an unlocking pin, the unlocking elastic member abuts between the second cavity and the unlocking pin, and the unlocking pin includes:

the pin head is arranged at the inner end of the unlocking pin, is cylindrical, and is locked with or separated from the locking component; and the number of the first and second groups,

and the dragging hole is arranged at the outer end of the unlocking pin and is rotationally connected with the pin pulling assembly through a pin.

In another preferred embodiment, the pin puller assembly comprises:

the rotating arm is provided with a rotating position with a fixed rotating center and is provided with a first end and a second end, and the first end is provided with a step;

one end of the first connecting rod is rotatably connected with the unlocking assembly, and the other end of the first connecting rod is connected with the first end; and (c) a second step of,

and one end of the second connecting rod is connected with the second end, and the other end of the second connecting rod is rotatably connected with the locking disc.

In another preferred embodiment, the locking disk is uniformly provided with four fan-shaped grooves along the circumference at the center, and the pull pin assembly is rotatably arranged in the fan-shaped grooves.

In another preferred embodiment, the driving mechanism comprises a first PCB, a memory alloy wire and a second PCB which are connected in sequence, the second PCB slides under the deformation of the memory alloy wire, and the pin head is connected to the second PCB.

According to the technical scheme, the four-point locking star-arrow separation synchronous unlocking device has the advantages and positive effects that: compared with the prior art, the utility model discloses, after actuating mechanism moves, the same effort of four locking release mechanisms can be given in the actuating mechanism action, and the unblock is realized in integrative linkage simultaneously, because the locking plate is the revolute pair with the connection of pulling pin subassembly is vice, and does not have the assembly degree of difficulty to the mounted position, and the revolute pair resistance is minimum, moves smoothly, and simple structure has guaranteed structural reliability for satellite separation process gesture is stable. By adopting a four-point locking mode, the complexity and the processing and assembling difficulty of the product are reduced, the reliability of the product is improved, and the assembling difficulty is low; meanwhile, the locking and unlocking mechanism is provided with a pretightening force adjusting piece, so that the locking and unlocking mechanism can be repeatedly used for a long time.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the present invention in a locked state (the unlocking assembly is retained after the locking assembly is removed);

fig. 3 is a schematic diagram of the unlocking state of the present invention (the unlocking assembly is removed and the unlocking assembly is retained);

fig. 4 is a longitudinal sectional view of the drive mechanism of the present invention in a locked state;

fig. 5 is a longitudinal sectional view of the driving mechanism of the present invention in an unlocked state;

fig. 6 is a transverse cross-sectional view of the drive mechanism of the present invention in a locked state;

fig. 7 is a transverse sectional view of the driving mechanism of the present invention in an unlocked state;

fig. 8 is a schematic structural view of the rotating arm of the transmission mechanism of the present invention;

FIG. 9 is a schematic structural view of a locking disk of a transmission mechanism according to the present invention

Fig. 10 isbase:Sub>A schematic cross-sectional view of the locking assembly of the present invention in the direction ofbase:Sub>A-base:Sub>A in fig. 1, inbase:Sub>A locked state;

fig. 11 is a cross-sectional view of the locking assembly and unlocking assembly of the present invention in the direction B-B of fig. 1, in a locked state;

fig. 12 isbase:Sub>A schematic cross-sectional view of the locking assembly of the present invention in the direction ofbase:Sub>A-base:Sub>A in fig. 1, in an unlocked state;

fig. 13 is a schematic cross-sectional view of the locking assembly and unlocking assembly of the present invention in the direction B-B of fig. 1, in an unlocked state;

fig. 14 is a schematic structural view of the mounting plate of the present invention;

fig. 15 is a schematic structural view of the lock of the present invention;

fig. 16 is a schematic structural view of the slider of the present invention;

fig. 17 is a schematic structural view of the locking link and the lock hook of the present invention;

fig. 18 is a schematic structural view of the release pin of the present invention.

Note that: the corresponding relationship between the components and the reference numbers in the figures is as follows:

the driving mechanism 100, the pin head 110, the first PCB 120, the memory alloy wire 130, the second PCB 140, the transmission mechanism 200, the locking plate 210, the pin hole 211, the sector groove 212, the pin pulling assembly 220, the rotating arm 221, the rotating position 2211, the step 2212, the first link 222, the second link 223, the locking and unlocking mechanism 300, the first cavity 301, the second cavity 302, the base 303, the side cover 304, the bottom cover 305, the locking assembly 310, the latch 311, the slider 312, the groove 3121, the limiting groove 3122, the connecting member 313, the locking link 3131, the locking hook 3132, the rotating position 31321, the hook 31322, the U-shaped arm 31323, the mounting plate 314, the mounting hole 3141, the mounting boss 3142, the mounting portion 3143, the pretension adjusting member 315, the release elastic member 316, the unlocking assembly 320, the unlocking elastic member 321, the unlocking pin 322, the pin head 3221, the drag hole 3222, and the mounting base plate 400.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The utility model provides a synchronous unlocking device of four-point locking star-arrow separation has not only simplified the structure, has still reduced the assembly degree of difficulty, and the pretightning force module is adjustable, has improved the structural reliability to can guarantee to keep the pretightning force unanimous in long-term the use. The present invention will be described in detail with reference to the drawings and the following detailed description.

In order to overcome the problem that the star-arrow separation synchronous unlocking device in the prior art has structure and assembly complicacy, the pretightning force uses unstably for a long time, refer to fig. 1, fig. 2 and fig. 3, the utility model provides a four-point locking star-arrow separation synchronous unlocking device, including actuating mechanism 100, drive mechanism 200 and locking and unlocking mechanism 300. Referring to fig. 4-7, the drive mechanism 100 includes a pin head 110 that is controllably retractable in response to an electrical signal. Referring to fig. 2-3 and 9, the transmission mechanism 200 includes a locking disc 210 and four pin pulling assemblies 220, the locking disc 210 is controllably and rotatably disposed, the outer circumferential surface of the locking disc 210 is provided with pin holes 221, the pin heads 110 are fitted with the pin holes 221, each pin pulling assembly 220 is uniformly and rotatably disposed on the locking disc 210, and the pin pulling assemblies 220 are link mechanisms. Referring to fig. 10-13, the four locking and unlocking mechanisms 300 are arranged in an even array, and include four locking assemblies 310 and four unlocking assemblies 320, the locking assemblies 310 are movably disposed in the first cavity 301, the outer ends of the locking assemblies 310 are used for connecting with a satellite, and a pretightening force adjuster 315 is disposed between the locking assemblies 310 and the satellite; the unlocking assembly 320 is movably arranged in the second cavity 302, the inner end of the unlocking assembly 320 is clamped with the locking assembly 310, the outer end of the unlocking assembly 320 extends out of the second cavity 302 and is connected with the pin pulling assembly 220, and the length directions of the first cavity 301 and the second cavity 302 are perpendicular.

The driving mechanism 100 controls the pin head to contract, the locking disc 210 loses the limit and rotates controllably, and drives the pin pulling assembly 220 to act, the unlocking assembly 320 extends out and is far away from the locking assembly 310 under the acting force of the pin pulling assembly 220, the locking assembly 310 is unlocked, and the satellite is released.

The technical scheme of the utility model, after actuating mechanism 100 moves, four locking release mechanism 300 the same effort can be given in the action of drive mechanism 200, and the unblock is realized in integrative linkage simultaneously, because the vice revolute pair that is of connection of locking plate 210 and pulling pin subassembly 220, and does not have the assembly degree of difficulty to the mounted position, and the revolute pair resistance is minimum, moves smoothly, and simple structure has guaranteed the structural reliability for the satellite separation process gesture is stable. By adopting a four-point locking mode, the complexity and the processing and assembling difficulty of the product are reduced, the reliability of the product is improved, and the assembling difficulty is low; meanwhile, the locking and unlocking mechanism 300 is provided with a pretightening force adjusting piece 315, so that the locking and unlocking mechanism can be repeatedly used for a long time.

Specifically, the utility model discloses an actuating mechanism 100, drive mechanism 200 and locking release mechanism 300 all set up on mounting plate 400, have unified assembly benchmark, are convenient for the connection and the assembly of each part.

1. The specific structure of the drive mechanism 100 is described below:

referring to fig. 4, 5, 6 and 7, in another preferred embodiment, the driving mechanism 100 includes a first PCB 120, a memory alloy wire 130 and a second PCB 140 connected in sequence, the second PCB 140 slides under the deformation of the memory alloy wire 130, and the pin head 110 is connected to the second PCB 140. The second PCB 140 serves as a driving carrier of the memory alloy wire 130, the memory alloy wire 130 is wound between the first PCB 120 and the second PCB 140 through a via hole and is welded and fixed, and after the first PCB 120 is powered on, the memory alloy wire 130 deforms to drive the second PCB 140 to slide along an inner guide rail, so that the pin head 110 is moved and unlocked. The electric signal driving mode is sensitive in action, and can still keep higher accuracy after being used for multiple times.

2. The specific structure of the transmission mechanism 200 is described below:

referring to fig. 2, 3 and 8, in another preferred embodiment, the pin pulling assembly 220 includes a rotating arm 221, a first link 222, and a second link 223. The rotating arm 210 is provided with a rotating position 2211 with a fixed rotating center, the rotating arm 221 is provided with a first end and a second end, and the first end is provided with a step 2212. The first link 222 has one end rotatably connected to the unlocking assembly 320 and the other end connected to the first end. One end of the second link 223 is connected to the second end, and the other end is rotatably connected to the locking disk 210. In this embodiment, the first link 222 is a rectangular metal structure, and two ends of the first link are provided with through holes as mounting holes for the rotation pins. The rotating arm 221 is a rectangular strip structure, a first end of the rotating arm is provided with a Z-shaped step 2212 for matching the height difference of front and rear parts and simultaneously realizing the rotating action of the rotating arm 221, and a second end of the rotating arm is provided with a U-shaped groove and a through hole. The second link 223 is a rectangular metal structure, and both ends thereof are provided with through holes as mounting holes for the rotation pins. In operation, the linkage mechanism acts upon rotation of the locking disk 210 to apply a pulling force to the unlocking assembly 320.

Referring to fig. 2, 3 and 9, in another preferred embodiment, the locking disk 210 is uniformly provided with four fan-shaped slots 212 at the center along the circumference thereof, and the pulling pin assembly 220 is rotatably disposed in the fan-shaped slots 212. The sector groove 212 can prevent the pin pulling assembly 220 from interfering with each other and limit the rotation range of the second link 223, and the sector groove 212 gradually becomes larger from the center of the lock disk 210 to the outer circumference, thereby preventing the link assembly from being excessively acted under inertia.

Referring to fig. 10, 11, 12 and 13, in another preferred embodiment, the locking assembly 310 and the unlocking assembly 320 are disposed within a base 303, the base 303 including side covers 304 and a bottom cover 305. The side cover 304 is disposed at the outer opening of the second cavity 302, and the unlocking assembly 320 partially penetrates through the side cover 304. The bottom cover 305 is arranged at the outer opening of the first cavity 301 and at the end away from the satellite, and the bottom cover 305 and the locking component 310 realize limiting. The base 303 is constructed of multiple parts that are connected for ease of assembly and to facilitate retention of the inner locking assembly 310 and unlocking assembly 320 by the side covers 304 and bottom cover 305. Specifically, the base 303 is an L-shaped open cavity structure, made of a metal material. A step and a shaft hole are arranged in the first cavity 301, and the shaft hole on the outer side is threaded and can be used for installing a pin. The side cover 304 is a rectangular plate-like structure with a rectangular through hole in the middle, from which a portion of the unlocking assembly 320 protrudes. The back of the side cover 304 is provided with a mounting ear for fixing the side cover 304 and the base 303. The side cover 304 functions to provide a limit for the unlocking pin 322, and when in the release state, the unlocking pin 322 is pushed out by the unlocking elastic member 321 for a certain distance until being blocked by the side cover 304.

Referring to fig. 10, 11, 12 and 13, in another preferred embodiment, the locking assembly 310 includes a latch 311, a slider 312 and a connector 313. Referring to fig. 15, the inner end of the latch 311 is provided with an enlarged portion, and the outer end of the latch 311 is used for connecting with a satellite. The slider 312 is slidably disposed in the first cavity 301. The connecting member 313 includes a locking link 3131 and a lock hook 3132, one end of the locking link 3131 is rotatably disposed on the sliding block 312, the other end of the locking link 3132 is rotatably disposed on the lock hook 3132, the lock hook 3132 has a rotation position 31321 to be rotatably disposed on the inner wall of the first cavity 301, and one end of the lock hook 3132 departing from the locking link 3131 is locked with or separated from the enlarged portion. In this embodiment, the expanded portion can improve the engaging effect with the latch 3132. The connection member 313 is provided as a simple link mechanism, and the latch 311 is finally unfolded or closed by the sliding of the slider 312. Lock hook 3132 has a rotation position 31321, so that lock link 3131 and lock hook 3132 correspond to a miniature lever, and lock link 3131 can obtain a larger opening angle of lock hook 3132 by rotating with a smaller angle, so that the rotation range of lock link 3131 is smaller from the locked state to the unlocked state, and there is no dead point, so that the whole releasing process is smoother.

Specifically, the connecting pins respectively penetrate through the shaft holes of the base 303 and are fastened by threads, and the lock hook 3132 rotates in the first cavity 301 through the connecting pins and is limited by the step in the first cavity 301. The first cavity 301 is provided with a rectangular groove 3121 as a sliding guide of the slider 312. The side wall of the base 303 is provided with a threaded hole for installing a disconnecting switch, and the side wall of the back is provided with a limiting through hole for limiting the sliding block 312 when the sliding block is locked.

3. The specific structure of the lock-unlock mechanism 300 is described below:

referring to fig. 1 and 14, further, in the above embodiment, the locking assembly 310 includes a mounting plate 314, the mounting plate 314 is fixed to the outer end of the locking latch 311 by a pretension adjusting member 315, and the mounting plate 314 is provided with a plurality of mounting holes 3141 for connecting satellites. The mounting plate 314 is a square plate structure, the surface of which is hollowed with a groove 3121 for reducing weight, the top surface of which is mounted with the satellite, and four corners of which are provided with mounting holes 3141. The pretightening force adjusting part 315 can be specifically set as an adjusting screw, and the pretightening degree of locking is realized by the tightness of the adjusting screw, so that the pretightening force adjusting part can be repeatedly used for many times and is stable.

Furthermore, in the above embodiment, the bottom of the mounting plate 314 is provided with a mounting boss 3142, the mounting boss 3142 is an inclined surface, the mounting boss 3142 extends into the first cavity 301, the middle part of the mounting boss 3142 is provided with a mounting part 3143, and the pretightening force adjusting member 315 passes through the mounting part 3143 and is connected with the latch 311. The mounting protrusion 3142 is a rectangular protrusion with an inclined edge for engaging with the inclined surface of the upper opening of the base 303. Correspondingly, the opening at the uppermost end of the base 303 is an inclined surface for locking and limiting with the mounting plate 14 during locking.

Referring to fig. 11, 13 and 16, or, further, in the above embodiment, the side of the slider 312 facing the lock catch 311 is provided with a groove 3121 for installing the release elastic member 316, and the release elastic member 316 abuts between the slider 312 and the first cavity 301. The release elastic member 316 is used for sliding the slider 312 along the first cavity 301. When the unlocking assembly 320 is pulled outwards, the sliding block 312 loses the limiting function of clamping, and then the releasing elastic element 316 presses the sliding block 312 downwards by using the self elasticity, the locking connecting rod 3131 rotates towards the vertical axis, the lock hook 3132 is opened, and the lock catch 311 is released.

Referring to fig. 11, 13 and 16, or, further, in the above embodiment, the side of the slider 12 facing the unlocking assembly 320 is provided with a limiting groove 3122 to engage with the inner end of the unlocking assembly 320 to limit the position of the slider 312. The unlocking member 320 is restricted from the side in the moving direction of the slider 312. During assembly, the slider 312 needs to be limited by the bottom cover 305, so that the unlocking assembly 320 enters the limiting groove 3121 and the elastic member 316 is released to be pressed. Specifically, the limiting groove 3122 is circular, so that the insertion is facilitated, and the clamping is avoided.

Referring to fig. 17, or, further, in the above embodiment, one end of the lock hook 3132 is an inverted L-shaped hook 31322 to hook the enlarged part in the locked state, the other end of the lock hook 3132 is a U-shaped arm 31323, and the U-shaped arm 31323 is rotatably connected to the locking link 3131. The U-shaped arm 31323 is provided with a shaft pin hole locking link 3131 which passes through the U-shaped arm 31323 and is fixed by a shaft pin. The end of the inverted-L hook 31322 is slightly thinner than the end of the U-shaped arm 31323 to prevent the hook from interfering with the sidewall of the base 303 in the unlocked state.

The locking link 3131 has a rectangular plate-shaped structure, and has two ends provided with fixing holes, the two ends have different thicknesses, the thin end is half of the thick end, the thick end of the locking link 3131 is connected to the U-shaped arm 31323, and the thin ends are engaged with each other and fixed to the slider 312 via a shaft pin. The pivot is cylindrical metal construction, and one end is equipped with the round cap, and one end is equipped with the recess, and the round cap end is used for spacingly, and the recess end is used for installing the checkpost.

Referring to fig. 11, 13 and 18, in another preferred embodiment, the unlocking assembly 320 includes an unlocking elastic member 321 and an unlocking pin 322, and the unlocking elastic member 321 abuts between the second cavity 302 and the unlocking pin 322. The unlocking pin 322 is installed in the second cavity 3102 of the base 303, the unlocking elastic member 321 is a compression spring, and the unlocking pin 322 is driven by the unlocking elastic member 321 to be pulled out in a default state to complete unlocking and releasing. One end of the dragging hole 3222 is provided with a through hole, which extends outside the base 303 and is used for connecting a trigger device for locking and releasing.

Referring to fig. 11 and 13, in particular, the second cavity 302 is divided into two layers of sleeves, and the inner layer of sleeve has a rectangular structure and is used as a sliding guide for the unlocking pin 322. The bottom surface of the second cavity 302 is also provided with a limiting through hole for auxiliary limiting of the unlocking pin 322 by an external utilization component during assembly, so that the unlocking pin 322 is in a contraction state, and the release elastic component 316 is in a compression state. The front part of the base 303 is provided with a through hole for installing the side cover 304. The side cover 304 functions to provide a limit for the unlocking pin 322, and when in the release state, the unlocking pin 322 is pushed out by the unlocking elastic member 321 for a certain distance until being blocked by the side cover 304.

Referring to fig. 11, 13 and 18, further, in the above embodiment, the unlocking pin 322 includes a pin head 3221 and a dragging hole 3222. The pin head 3221 is disposed at the inner end of the unlocking pin 322, and has a cylindrical shape, and is locked with or separated from the slider 312 of the unlocking assembly 310. The dragging hole 3222 is disposed at the outer end of the unlocking pin 322, and is rotatably connected to the pin pulling assembly 220 through a pin. The pin puller assembly 220 is the powered component. Two steps are arranged at the end of the cylindrical pin head 3221, the first step is used for controlling the extending distance of the unlocking pin 322, and the second step is used for blocking the unlocking elastic piece 321 to realize compression of the pressure spring.

It is noted that, in this document, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a four point locking star rocket separation synchronization unlocking device which characterized in that includes:

the driving mechanism comprises a pin head which can stretch and retract controllably according to an electric signal;

the transmission mechanism comprises a locking disc and four pin pulling assemblies, the locking disc is controllably and rotatably arranged, pin holes are formed in the outer circumferential surface of the locking disc, pin heads are matched with the pin holes, the pin pulling assemblies are uniformly and rotatably arranged on the locking disc, and each pin pulling assembly is a connecting rod mechanism; and the number of the first and second groups,

the locking and unlocking mechanisms are arranged into four uniformly arranged mechanisms and comprise locking components and unlocking components, the locking components are movably arranged in the first cavity, the outer ends of the locking components are used for being connected with a satellite, and pretightening force adjusting pieces are arranged between the locking components and the satellite; the unlocking assembly is movably arranged in the second cavity, the inner end of the unlocking assembly is clamped with the locking assembly, the outer end of the unlocking assembly extends out of the second cavity and is connected with the pin pulling assembly, and the length directions of the first cavity and the second cavity are vertical;

the driving mechanism controls the pin head to contract, the locking disc loses limiting and is controlled to rotate, the pin pulling assembly is driven to move, the unlocking assembly stretches out and keeps away from the acting force of the pin pulling assembly, the locking assembly is unlocked, and the satellite is released.

2. The four-point locking star and arrow separation synchronous unlocking device of claim 1, wherein the locking assembly comprises:

the inner end of the lock catch is provided with an expansion part, and the outer end of the lock catch is used for being connected with a satellite;

the sliding block is arranged in the first cavity in a sliding manner; and the number of the first and second groups,

the connecting piece, the connecting piece includes locking connecting rod and lock hook, the one end of locking connecting rod is rotated and is located the slider, the other end is rotated and is located the lock hook, the lock hook is equipped with and rotates the position and locate in order to rotate the inner wall of first cavity, the lock hook deviates from the one end of locking connecting rod with the locking of expansion portion or break away from each other.

3. The four-point locking satellite-rocket separation synchronous unlocking device as claimed in claim 2, wherein the locking assembly comprises a mounting plate, the mounting plate is fixed at the outer end of the lock catch through the pretightening force adjusting piece, and the mounting plate is provided with a plurality of mounting holes for connecting satellites.

4. The four-point locking star-arrow separation synchronous unlocking device as claimed in claim 2, wherein the side of the sliding block facing the lock catch is provided with a groove for installing a release elastic member, and the release elastic member abuts between the sliding block and the first cavity.

5. The four-point locking satellite-rocket separation synchronous unlocking device as claimed in claim 2, wherein a side surface of the sliding block facing the unlocking assembly is provided with a limiting groove to be engaged with an inner end of the unlocking assembly, so that the sliding block is limited.

6. The four-point locking satellite-rocket separation synchronous unlocking device as claimed in claim 2, wherein one end of the lock hook is an inverted L-shaped hook head to hook the enlarged portion in the locking state, and the other end of the lock hook is a U-shaped arm, and the U-shaped arm is rotatably connected with the locking connecting rod.

7. The four-point locking satellite-rocket separation synchronous unlocking device as claimed in claim 1, wherein the unlocking assembly comprises an unlocking elastic member and an unlocking pin, the unlocking elastic member abuts between the second cavity and the unlocking pin, and the unlocking pin comprises:

the pin head is arranged at the inner end of the unlocking pin, is cylindrical, and is locked with or separated from the locking component; and the dragging hole is arranged at the outer end of the unlocking pin and is rotationally connected with the pin pulling assembly through a pin.

8. The four-point locking star and arrow separation synchronous unlocking device of claim 1, wherein the pin pulling assembly comprises:

the rotating arm is provided with a rotating position with a fixed rotating center and is provided with a first end and a second end, and the first end is provided with a step;

one end of the first connecting rod is rotatably connected with the unlocking assembly, and the other end of the first connecting rod is connected with the first end; and the number of the first and second groups,

and one end of the second connecting rod is connected with the second end, and the other end of the second connecting rod is rotatably connected with the locking disc.

9. The four-point locking star and arrow separation synchronous unlocking device as recited in claim 1, wherein the locking disk is uniformly provided with four fan-shaped grooves along the circumference, and the pulling pin assembly is rotatably arranged in the fan-shaped grooves.

10. The four-point locking satellite-rocket separation synchronous unlocking device as claimed in claim 1, wherein the driving mechanism comprises a first PCB, a memory alloy wire and a second PCB which are connected in sequence, the second PCB slides under the deformation of the memory alloy wire, and the pin head is connected to the second PCB.

Images