Heat knife unlocking mechanism, mounting method and satellite

Abstract

The invention relates to the field of pressing unlocking mechanisms, in particular to a heat knife unlocking mechanism, an installation method and a satellite. The hot knife unlocking mechanism comprises a first device used for being fixedly connected with a first component; the second device is used for being fixedly connected with a second component; the rope is wound outside the first device and the second device and locks the first device and the second device; and the hot knife assembly is slidably connected with the first device, abuts against the inner side of the rope and is used for heating and fusing the rope. The first component and the second component are locked through rope locking. By means of the first device, the hot knife assembly can slide on the first device, the hot knife assembly can move outwards from the inner side of the rope, the rope is heated and fused to achieve unlocking, impact force is small in the unlocking process, the rope is fused from inside to outside, the fused surface of the rope can be more tidy, and the service life of the rope is prolonged. Unlocking lagging caused by expansion of the fusing face of the rope is effectively avoided, the unlocking process is smoother, and the heat knife unlocking mechanism has higher safety.

Description

Technical Field

[0001] The present disclosure relates to the field of compression unlocking mechanisms, and in particular to a hot knife unlocking mechanism, an installation method and a satellite. Background Art

[0002] For the locking and separation components, the locking and separation components are generally pressed and fixed and unfolded by a pressing and unlocking mechanism. The pressing and unlocking mechanism will produce a large impact during the unlocking process, which is difficult to adapt to occasions where the separation impact requirement is small, and it is easy to get stuck during the unlocking process. After completing an unlocking, the process of re-pressing the expandable component, re-installing the locking and separation component, and replacing the related components of the pressing and unlocking mechanism is relatively complicated. Summary of the invention

[0003] In order to overcome the problems existing in the related art, an exemplary embodiment of the present disclosure provides a hot knife unlocking mechanism for locking or unlocking a first component and a second component, including: a first device for fixedly connecting to the first component; a second device for fixedly connecting to the second component; a rope wrapped around the outside of the first device and the second device, and the first device and the second device are locked by the rope; a hot knife assembly, slidably connected to the first device, abutting against the inner side of the rope, and used to heat and fuse the rope.

[0004] In some embodiments, the first device includes: a base, which is used to be fixedly connected to the first component; a guide rod, which is fixedly arranged in the middle of the base and extends toward the inner side of the rope; and the hot knife assembly is slidably arranged on the guide rod.

[0005] In some embodiments, the hot knife assembly includes: a knife holder having a guide hole in the middle, the guide hole being sleeved on the guide rod so that the knife holder can slide along the guide rod; a spring being sleeved on the outside of the guide rod, one end of which abuts against the base and the other end of which abuts against the knife holder; a knife rod fixed to the knife holder, abutting against the inner side of the rope under the action of the elastic force of the spring, for heating and melting the rope.

[0006] In some embodiments, an inner thread is arranged at the outer end of the guide rod along the axial direction of the guide rod; the first device also includes: a limit screw, which cooperates with the inner thread of the guide rod to limit the maximum sliding stroke of the tool holder on the guide rod from the inside to the outside.

[0007] In some embodiments, a first plane extending along the axial direction is formed on one side of the outer peripheral surface of the guide rod; the cross-section of the guide hole is arranged corresponding to the cross-section of the guide rod, forming a second plane extending along the axial direction, and the second plane is slidably matched with the first plane to limit the rotation of the tool holder.

[0008] In some embodiments, the guide rod is fixedly disposed on the base so that the guide rod extends from both sides of the base to outside the base respectively; the hot knife unlocking mechanism includes two hot knife assemblies, which are respectively slidably disposed on both sides of the guide rod extending outside the base.

[0009] In some embodiments, the inner wall of the guide hole is provided with chamfers at both ends along the axial direction of the guide hole, so as to reduce the sliding resistance of the tool holder when sliding on the guide rod.

[0010] In some embodiments, the bottom surface of the base is concave to form a first groove, the top surface of the first groove extends outward along the axial direction of the guide rod to form a first boss, and the first boss extends downward on both sides parallel to the extension direction of the first groove to form side walls; the top surface of the second device is concave to form a second groove, the bottom surface of the second groove extends outward along the axial direction of the guide rod to form a second boss, and the second boss extends upward on both sides parallel to the extension direction of the first groove to form side walls; the rope is wrapped around the first groove and the second groove.

[0011] In some embodiments, a first adhesive layer is formed in the first groove, covering the portion of the rope located in the first groove; and / or a second adhesive layer is formed in the second groove, covering the portion of the rope located in the second groove.

[0012] In some embodiments, the first boss and / or the second boss is provided with a fixing end for fixing a starting end or a terminating end of the rope.

[0013] In some embodiments, the first device further includes: a positioning platform, which is disposed on the top surface of the base and protrudes toward the second device; the second device further includes: a positioning groove, which is disposed on the bottom surface of the second device and cooperates with the positioning platform.

[0014] In some embodiments, the positioning platform is sprayed with a high friction coating on the contact surface that cooperates with the positioning groove; and / or the positioning groove is sprayed with a high friction coating on the contact surface that cooperates with the positioning platform.

[0015] In some embodiments, the hot knife unlocking mechanism further includes: a wire winding tool, which is detachably mounted on the outside of the first device and is used to drive the first device and the second device to rotate so that the rope is wound around the outside of the first device and the second device.

[0016] In a second aspect, the present disclosure also provides an installation method, which is applied to the hot knife unlocking mechanism as described in any of the above embodiments, including: installing the hot knife assembly on the first device; docking the first device with the second device; winding the rope around the outside of the first device and the second device, and making the hot knife assembly abut against the inside of the rope.

[0017] In some embodiments, after winding the rope around the outside of the first device and the second device, the installation method further includes: installing the first device on the first component; and installing the second device on the second component.

[0018] In some embodiments, after wrapping the rope around the outside of the first device and the second device, the installation method further includes: applying glue where the rope is wrapped around the first device to fix the rope portion to the first device; and / or applying glue where the rope is wrapped around the second device to fix the rope portion to the second device.

[0019] In the third aspect, the present disclosure also provides a satellite, including: a satellite body; a movable part, arranged on the side of the satellite body; a hot knife unlocking mechanism as described in any of the above embodiments, wherein the first device is fixedly connected to the satellite body, and the second device is fixedly connected to the movable part, for locking or unlocking the satellite body and the movable part.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

[0021] The hot knife unlocking mechanism provided by the present invention locks the first device and the second device through the rope to achieve locking of the first component and the second component. The hot knife assembly can slide on the first device, so that the hot knife assembly can move from the inside of the rope to the outside, heat and melt the rope to achieve unlocking. The impact force is small during the unlocking process, and the rope is melted from the inside to the outside during the melting process, which can make the melting surface of the rope more neat, effectively avoiding the unlocking jam caused by the expansion of the melting surface of the rope, thereby making the unlocking process smoother and making the hot knife unlocking mechanism more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention may be better understood by describing exemplary embodiments of the present invention in conjunction with the accompanying drawings, in which:

[0023] Figure 1 is a schematic diagram of a hot knife unlocking mechanism structure according to an exemplary embodiment of the disclosure;

[0024] Figure 2is a schematic diagram of the structure of a hot knife unlocking mechanism according to another exemplary embodiment of the present disclosure;

[0025] Figure 3 is a schematic diagram of the structure of a hot knife unlocking mechanism according to another exemplary embodiment of the present disclosure;

[0026] Figure 4 is a schematic diagram of the structure of a hot knife unlocking mechanism according to another exemplary embodiment of the present disclosure;

[0027] Figure 5 is a front view of a hot knife unlocking mechanism structure according to an exemplary embodiment of the disclosure;

[0028] Figure 6 is a cross-sectional view of a hot knife unlocking mechanism structure according to an exemplary embodiment of the disclosure;

[0029] Figure 7 is a schematic diagram of a guide rod structure according to an exemplary embodiment of the disclosure;

[0030] Figure 8 is a schematic diagram of a tool holder structure according to an exemplary embodiment of the disclosure;

[0031] Fig. 9 is a circuit diagram of a hot knife unlocking mechanism according to an exemplary embodiment of the disclosure;

[0032] Fig.10 is a schematic diagram of a second device structure according to an exemplary embodiment of the disclosure;

[0033] Fig.11 is a cross-sectional view of a second device of a hot knife unlocking mechanism according to an exemplary embodiment of the disclosure;

[0034] Fig.12 is a schematic diagram of the structure of a hot knife unlocking mechanism according to another exemplary embodiment of the present disclosure;

[0035] Fig.13 is a flow chart of an installation method according to an exemplary embodiment of the disclosure;

[0036] Fig.14 is a flow chart of an installation method according to another exemplary embodiment of the present disclosure;

[0037] Fig.15 is a flow chart of an installation method according to another exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0038] The specific embodiments of the present invention will be described below. It should be noted that in the specific description of these embodiments, in order to provide a concise description, it is impossible for this specification to provide a detailed description of all the features of the actual embodiments. It should be understood that in the actual implementation of any embodiment, just as in the process of any engineering project or design project, in order to achieve the specific goals of the developer and to meet system-related or business-related restrictions, various specific decisions are often made, and this will also change from one embodiment to another. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for ordinary technicians in the field related to the content disclosed by the present invention, some changes such as design, manufacturing or production based on the technical content disclosed in this disclosure are just conventional technical means, and should not be understood as insufficient content of this disclosure.

[0039] Unless otherwise defined, the technical or scientific terms used in the claims and the specification shall have the usual meaning understood by persons with ordinary skills in the technical field to which the invention belongs. The words "first", "second" and similar words used in the patent application specification and the claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limitation, but indicate the existence of at least one. "Include" or "comprises" and other similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalent elements, and do not exclude other elements or objects. "Connected" or "connected" and other similar words are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0040] In some technologies, an pyrotechnic unlocking mechanism is used to lock and unlock the locking and releasing assembly, and the pyrotechnic unlocking mechanism is unlocked by utilizing the explosive fracture of pyrotechnics such as explosive bolts or pin pullers. However, since the explosion of pyrotechnics easily generates a large impact force, it is easy to cause damage to the unlocking mechanism and related components, and the safety is poor. In other technologies, ropes are used for locking and hot knives are used to melt the ropes to achieve unlocking. Since the fused section of the rope melted by the hot knife is prone to cross-sectional expansion, the cross-sectional area of ​​the rope increases during the unlocking process, hooking the locking and releasing assembly, causing the unlocking to be stuck or unable to be unlocked, and the reliability is poor.

[0041] To solve the above problems, the present disclosure provides a hot knife unlocking mechanism for locking or unlocking a first component and a second component, such as Figure 1 , Figure 2 and Figure 3As shown, it may include: a first device 10 , a second device 20 , a rope 30 and a hot knife assembly 40 .

[0042] The first device 10 is used to be fixedly connected to the first component. The first device 10 and the first component can be fixedly connected by screws. The first device 10 can cooperate with the second device 20. The first device 10 and the second device 20 are matched and fixed to each other, so that the first component and the second component can be locked. When unlocking, the first device 10 and the second device 20 are separated, so that the first component and the second component are unlocked.

[0043] The second device 20 is used for fixed connection with the second component. The second device 20 and the second component can be fixedly connected by screws, and the second device 20 can cooperate with the first device 10. The first component and the second component can be locked and separated by the cooperation and separation of the first device 10 and the second device 20.

[0044] The rope 30 is wound around the first device 10 and the second device 20, and the first device 10 and the second device 20 are locked by the rope 30. The rope 30 can be wound around the first device 10 and the second device 20 for multiple turns, so that the rope 30 locks the first device 10 and the second device 20 that cooperate with each other. The rope 30 can be a Dyneema single-bundle fiber rope, which is wound around the first device 10 and the second device 20 for multiple turns, so that the rope 30 can apply a locking force to the first device 10 and the second device 20, ensuring the stability of the first device 10 and the second device 20 in the locked state.

[0045] The hot knife assembly 40 is slidably connected to the first device 10, abuts against the inner side of the rope 30, and is used to heat and melt the rope 30. The hot knife assembly 40 can be slidably connected to the first device 10, so that the hot knife assembly 40 can slide relative to the first device 10, and slide from the first device 10 to the rope 30 in the horizontal direction until the hot knife assembly 40 abuts against the inner side of the rope 30. When the hot knife unlocking mechanism is in a locked state, the hot knife assembly 40 can be unheated, so that the hot knife assembly 40 can abut against the inner side of the rope 30 and remain stable. When the hot knife unlocking mechanism needs to be unlocked, the hot knife can be heated, so that the hot knife assembly 40 abutting against the inner side of the rope 30 slides outward from the inner side of the rope 30 to melt the rope 30, so that the first device 10 and the second device 20, which are locked by the rope 30, are separated, thereby realizing the unlocking of the first component and the second component.

[0046] Through the hot knife unlocking mechanism provided in this embodiment, the first component and the second component can be locked by winding the rope 30 around the outside of the first device 10 and the second device 20, and the rope 30 provides a pre-tightening force to the first device 10 and the second device 20 to achieve locking. And the hot knife assembly 40 heats and melts the rope 30 from the inside of the rope 30 to the outside, so that the first device 10 and the second device 20 can be unlocked and separated, thereby achieving unlocking of the first component and the second component. Through this embodiment, the rope 30 is wound around the outside of the first device 10 and the second device 20, and the hot knife assembly 40 moves from the inside of the rope 30 to the outside to melt the rope 30, which can effectively avoid the expansion of the rope 30 melting section, causing the rope 30 to hook the first device 10 and the second device 20 or other related parts and cause unlocking jam. Since the rope 30 is wound around the outside of the first device 10 and the second device 20, and the hot knife assembly 40 melts the rope 30 from the inside of the rope 30 to the outside, if the rope 30 expands due to the melting surface, the large external space of the first device 10 and the second device 20 can effectively prevent the melted rope 30 from hooking the first device 10 and the second device 20. The unlocking process of the hot knife unlocking mechanism can be smoother and more reliable. After the unlocking is completed, the first device 10 and the second device 20 can be matched again and the rope 30 can be wrapped around the outside of the first device 10 and the second device 20, so as to lock the first device 10 and the second device 20 again. The rope 30 is easy to install and disassemble, and the hot knife unlocking mechanism can be quickly restored from the unlocked state to the locked state, which is more efficient.

[0047] In some embodiments, Figure 4 As shown, the first device 10 may include: a base 11 and a guide rod 12 .

[0048] The base 11 is used for fixed connection with the first component. The base 11 may be formed with a mounting structure for fixed connection with the first component. The bottom of the base 11 may extend outward in a horizontal direction to form a mounting portion, and the mounting portion may be provided with a through hole or a threaded hole, so that the base 11 can be fixedly connected to the first component by screws.

[0049] The guide rod 12 is fixedly arranged in the middle of the base 11 and extends toward the inner side of the rope 30; the hot knife assembly 40 is slidably arranged on the guide rod 12. The guide rod 12 can be fixedly arranged in the middle of the base 11, and its extension direction can be toward the rope 30. The guide rod 12 can be provided with an external thread for fixing with the base 11. The guide rod 12 can be arranged through the base 11, and the external thread of the guide rod 12 can be arranged in the middle section of the guide rod 12, so that the external thread of the middle section of the guide rod 12 cooperates with the base 11, and the two ends of the guide rod 12 extend toward the rope 30 wound outside the first device 10 and the second device 20 respectively, so that the two ends of the guide rod 12 extend to the outside of the base 11. The guide rod 12 can also be fixedly arranged at one end in the middle of the base 11, and the other end is located outside the base 11 and extends toward the inner side of the rope 30. The hot knife assembly 40 can be slidably arranged on the guide rod 12, so that the hot knife assembly 40 can slide back and forth along the extension direction of the guide rod 12. There can also be two guide rods 12, so that the two guide rods 12 are coaxially arranged on the first device 10, one end of the guide rod 12 is fixed to the middle of the base 11, and the other end is located outside the base 11 and extends to the inside of the rope 30, so that the two guide rods 12 extend in opposite directions. The hot knife assembly 40 can include one or more. When one end of the guide rod 12 is fixed to the middle of the base 11 and the other end is located outside the base 11, one hot knife assembly 40 can be slidably arranged on the guide rod 12, so that the hot knife assembly 40; when the guide rod 12 is arranged to penetrate the base 11, the two hot knife assemblies 40 can be slidably arranged at the two ends of the guide rod 12 respectively, so that each hot knife assembly 40 can reciprocate along the extension direction of the guide rod 12. The outer peripheral side of the guide rod 12 can be provided with a low friction coating to reduce the sliding friction and facilitate the hot knife assembly 40 to slide on the guide rod 12.

[0050] Through the embodiment of the present disclosure, the installation of the hot knife assembly 40 can be facilitated by the base 11 and the guide rod 12 installed on the base 11. By sliding the hot knife assembly 40 on the guide rod 12, the guide rod 12 can guide the hot knife assembly 40, so that the hot knife assembly 40 can slide back and forth along the guide rod 12, thereby maintaining the stability of the hot knife assembly 40 and avoiding the hot knife assembly 40 from shifting during movement, thereby ensuring the stability of the hot knife assembly 40 during the unlocking process and improving the safety of the hot knife unlocking mechanism.

[0051] In some embodiments, Figure 5 , Figure 6 As shown, the hot knife assembly 40 may include: a knife holder 41 , a spring 42 , and a knife bar 43 .

[0052] Tool holder 41, such as Figure 8As shown, a guide hole 411 is provided in the middle, and the guide hole 411 is sleeved on the guide rod 12, so that the tool holder 41 can slide along the guide rod 12. The tool holder 41 can be in the form of a sheet, and a guide hole 411 can be opened in the middle of the tool holder 41, and the guide hole 411 can cooperate with the outer peripheral side of the guide rod 12, so that the guide hole 411 can be sleeved on the guide rod 12, and the tool holder 41 can slide freely along the extension direction of the guide rod 12 through the guide hole 411, so that the guide rod 12 can provide motion support for the tool holder 41. The tool holder 41 can be provided on one side of the tool rod 43 for fixing the tool rod 43. U-shaped grooves can be provided at both ends of the tool holder 41 to facilitate the screws to pass through and to allow a certain adjustment space for the tool holder 41 when it is fixedly installed with the tool rod 43.

[0053] The spring 42 is sleeved outside the guide rod 12, one end of which abuts against the base 11, and the other end abuts against the knife holder 41. The spring 42 can provide a driving force for the knife holder 41 to slide on the guide rod 12. The spring 42 can be sleeved outside the guide rod 12, one end of the spring 42 can abut against the base 11, and the other end can abut against the side of the knife holder 41 away from the knife bar 43, so as to push the knife holder 41 to move toward the inside of the rope 30 to fuse the rope 30.

[0054] The knife bar 43 is fixed to the knife holder 41 and abuts against the inner side of the rope 30 under the elastic force of the spring 42 to heat and fuse the rope 30. The knife bar 43 can be fixed to the knife holder 41, and the knife bar 43 and the knife holder 41 can be fixedly connected by screws. When the hot knife unlocking mechanism is in a locked state, the spring 42 can be in a compressed state, so that the spring 42 pushes the knife holder 41 to move along the guide rod 12 toward the inner side of the rope 30. Under the action of the elastic force of the spring 42, the knife rod 43 fixedly installed on the knife holder 41 can abut against the inner side of the rope 30. When the hot knife unlocking mechanism is in a locked state, the knife rod 43 is not heated, so that the knife rod 43 can abut against the inner side of the rope 30 and remain stable; when the hot knife unlocking mechanism needs to be unlocked, the knife rod 43 can be heated to heat up and melt the rope 30. Under the action of the elastic force of the spring 42, the knife holder 41 is pushed to move along the guide rod 12 from the inner side of the rope 30 to the outer side of the rope 30, thereby driving the knife rod 43 to move from the inner side of the rope 30 to the outer side of the rope 30 to melt the rope 30, so that the first component and the second component are unlocked.

[0055] Through the embodiment of the present disclosure, a guide hole 411 for being sleeved on the guide rod 12 is opened on the knife holder 41, so that the hot knife assembly 40 can be installed on the guide rod 12 and can slide on the guide rod 12, and the knife holder 41 is pushed by the spring 42 to move toward the inside of the rope 30, so that the knife rod 43 fixed on the knife holder 41 is heated and moves from the inside of the rope 30 to the outside to fuse the rope 30, so that the hot knife assembly 40 can remain stable during the process of fusing the rope 30, and the knife holder 41 is driven to move outward by a spring 42 in the middle of the knife holder 41, so that the stability and smoothness of the knife holder 41 during the movement process can be ensured, and the situation that the knife holder 41 tilts and moves and gets stuck due to the inconsistent elastic force of the springs 42, such as that caused by the driving of two springs 42 located at the two ends of the knife holder 41, is avoided, and the stability and safety of the knife holder 41 during the sliding process along the guide rod 12 are effectively guaranteed, and the safety of the hot knife unlocking mechanism is improved to avoid jamming.

[0056] In some embodiments, the outer end of the guide rod 12 is provided with an internal thread along the axial direction of the guide rod 12; Figure 4 , Figure 7 As shown, the first device 10 may also include: a limit screw 13, which cooperates with the internal thread of the guide rod 12 to limit the maximum travel of the tool holder 41 sliding from the inside to the outside on the guide rod 12. The end of the outer side of the guide rod 12 may be provided with an internal thread along the axial direction of the guide rod 12, which may be used to install the limit screw 13 to limit the tool holder 41 installed on the guide rod 12. The external thread of the limit screw 13 may cooperate with the internal thread of the guide rod 12 to be fixedly installed at the end of the guide rod 12, and the head size of the limit screw 13 may be larger than the outer circumference size of the guide rod 12, so that the head of the limit screw 13 is larger than the size of the guide hole 411. When the limit screw 13 is installed at the end of the guide rod 12, when the tool holder 41 slides along the extension direction of the guide rod 12, when the tool holder 41 moves toward the inner side of the rope 30 to the end of the guide rod 12, it can be restricted by the limit screw 13, so that the tool holder 41 stops sliding from the inside to the outside, which can prevent the tool holder 41 from being pushed to separate from the guide rod 12 and falling off under the action of the elastic force of the spring 42. The limit screw 13 can limit the maximum sliding stroke of the tool holder 41 on the guide rod 12 from the inside to the outside, thereby ensuring the safety of the tool holder 41 sliding on the guide rod 12. Through the embodiment of the present disclosure, a limit screw 13 can be installed at the end of the guide rod 12 to limit the sliding stroke of the tool holder 41 on the guide rod 12, which can effectively prevent the tool holder 41 from being pushed to separate from the guide rod 12 and falling due to the elastic force of the spring 42, thereby effectively improving the safety of the hot knife assembly 40. While ensuring that the sliding stroke of the tool holder 41 along the guide rod 12 is sufficient to enable the knife rod 43 to fuse the rope 30, the maximum sliding stroke of the tool holder 41 on the guide rod 12 is limited to prevent the tool holder 41 from falling, thereby improving the safety of the hot knife unlocking assembly.

[0057] In some embodiments, a first plane 121 extending in the axial direction may be formed on one side of the outer circumference of the guide rod 12; the cross section of the guide hole 411 is arranged corresponding to the cross section of the guide rod 12, and a second plane 4111 extending in the axial direction is formed, and the second plane 4111 is slidably matched with the first plane 121 to limit the rotation of the tool holder 41. A plane extending in the axial direction may be formed on one side of the outer circumference of the guide rod 12, so that the radial cross section of the guide rod 12 is D-shaped, and the cross section of the guide hole 411 of the tool holder 41 is arranged corresponding to the cross section of the guide rod 12 so that the guide hole 411 is matched with the guide rod 12 to ensure that the tool holder 41 can slide along the guide rod 12, and the cross section of the guide hole 411 may be formed with a second plane 4111 extending in the axial direction, so that the cross section of the guide hole 411 is also D-shaped and matched with the guide rod 12. The first plane 121 and the second plane 4111 can be slidably matched to ensure that the tool holder 41 can slide smoothly on the guide rod 12. Due to the first plane 121 formed by the outer peripheral surface of the guide rod 12 and the second plane 4111 of the cross-section of the guide hole 411 matched therewith, the radial cross-section of the guide rod 12 and the guide hole 411 is no longer circular, which can prevent the knife holder 41 and the guide rod 12 from rotating relative to each other, so as to ensure the stability of the hot knife assembly 40 sliding on the guide rod 12, prevent the hot knife assembly 40 and the guide rod 12 from rotating relative to each other, causing the knife bar 43 to tilt, resulting in uneven force and uneven melting surface of the rope 30, thereby improving the efficiency of the hot knife assembly 40 of the hot knife unlocking mechanism in melting the rope 30.

[0058] In some embodiments, Figure 4 , Figure 6As shown, the guide rod 12 can be fixedly arranged on the base 11, so that the guide rod 12 extends from both sides of the base 11 to the outside of the base 11; the hot knife unlocking mechanism includes two hot knife assemblies 40, which are slidably arranged on both sides of the guide rod 12 extending to the outside of the base 11. The guide rod 12 can be arranged through the base 11, and the diameter of the middle section of the guide rod 12 can be larger than the diameter of the two side sections of the guide rod 12, so that the middle section of the guide rod 12 is fixedly connected to the base 11, and the two side sections of the guide rod 12 extend outward from both sides of the base 11, so that the two side sections of the guide rod 12 extend toward the inside of the rope 30. The middle section of the guide rod 12 can be provided with an external thread, and a threaded hole can be opened in the middle of the base 11 for matching and fixing with the middle section of the guide rod 12. The hot knife unlocking mechanism may include two hot knife assemblies 40, which may be slidably disposed on the two side sections of the guide rod 12, respectively, so that the two hot knife assemblies 40 can slide back and forth on the two side sections of the guide rod 12, respectively, so that the two hot knife assemblies 40 can slide along the guide rod 12 from the two sides of the first device 10 to the inner side of the rope 30, respectively, and can heat to melt the rope 30, and can melt the rope 30 wrapped around the first device 10 and the second device 20 from different positions, so as to ensure that the hot knife unlocking mechanism can completely melt the rope 30 to achieve unlocking during the unlocking process, and avoid jamming and unlocking failure. The two hot knife assemblies 40 can be in a primary-backup relationship, and the two hot knife assemblies 40 can operate simultaneously or independently. During the unlocking process, the two hot knife assemblies 40 can be powered on at the same time to heat them at the same time and melt the rope 30 from different positions. During the unlocking process, one hot knife assembly 40 may be powered on first to heat it and fuse the rope 30. If it completely fuses the rope 30, that is, unlocking of the first component and the second component is achieved, the other hot knife assembly 40 may not be powered on. If the current hot knife assembly 40 does not completely fuse the rope 30, the other hot knife assembly 40 may be powered on to heat it and fuse the rope 30, thereby avoiding unlocking jams and ensuring a smooth and efficient unlocking process of the rope 30. Fig. 9As shown, the two hot knife assemblies 40 can be powered in parallel, and each hot knife assembly 40 can operate independently. During the unlocking process, switch a can be closed so that the circuit supplies power to the hot knife assembly A, so that the hot knife assembly A is heated to fuse the rope 30. If the hot knife assembly A completely fuses the rope 30, the hot knife unlocking mechanism is unlocked; if the hot knife assembly A does not fuse the rope 30, switch b can be closed so that the circuit supplies power to the hot knife assembly B, so that the hot knife assembly B is heated to fuse the rope 30. It is also possible to close switches a and b at the same time during the unlocking process so that the hot knife assembly A and the hot knife assembly B operate at the same time and fuse the rope 30 to achieve unlocking. The guide rod 12 provided by this embodiment, which is fixedly arranged on the base 11 and extends outward along both sides of the base 11, can save space and facilitate the sliding of the two hot knife assemblies 40 on the two side sections of the guide rod respectively. It can ensure that the hot knife unlocking assembly does not get stuck during the unlocking process, ensure a smooth unlocking process, and improve the unlocking efficiency. Fig. 9 The circuit controls the two hot knife assemblies 40 of the hot knife unlocking mechanism. The power supply circuit is simple and can safely control the hot knife unlocking mechanism to ensure that the rope 30 is completely melted to unlock the hot knife unlocking mechanism.

[0059] In some embodiments, Figure 8As shown, the inner wall of the guide hole 411 may be provided with chamfers 4112 at both ends along the axial direction of the guide hole 411, so as to reduce the sliding resistance of the tool holder 41 when sliding on the guide rod 12. The inner wall of the guide hole 411 and the outer peripheral side of the guide rod 12 may cooperate with each other. Since the edges at both ends of the guide hole 411 are at right angles, during the sliding process of the tool holder 41 along the guide rod 12, if there is a slight angle deviation between the guide rod 12 and the guide hole 411, resulting in imperfect alignment, or when the guide rod 12 and the tool holder 41 are subjected to lateral force, the right-angled edge of the guide hole 411 may cause jamming, so that the tool holder 41 cannot slide along the guide rod 12. The guide rod 12 and the guide hole 411 of the tool holder 41 are easily affected by the shaking or vibration of the equipment, resulting in changes in the contact surface, so that the sliding resistance of the tool holder 41 during the sliding process along the guide rod 12 is relatively large, affecting the operation of the hot knife assembly 40. Chamfers 4112 are provided at both ends of the inner wall of the guide hole 411, so that the edge of the guide hole 411 is inclined, thereby reducing the impact of the shaking or vibration of the equipment on the contact surface between the guide rod 12 and the inner wall of the guide hole 411, thereby reducing the sliding resistance and reducing the jamming phenomenon between the guide rod 12 and the tool holder 41. By providing the chamfers 4112, when the tool holder 41 is slidably installed on the guide rod 12, the chamfers 4112 can play a guiding role, so that the guide rod 12 and the guide hole 411 are more easily aligned to facilitate the installation of the tool holder 41 and the guide rod 12. Through the scheme provided by this embodiment, the sliding resistance of the tool holder 41 when sliding on the guide rod 12 can be reduced by providing the chamfers 4112 on the guide hole 411, so as to avoid jamming when the tool holder 41 slides on the guide rod 12, thereby ensuring the safe operation of the hot knife assembly 40, so that the hot knife assembly 40 can slide along the guide rod 12 toward the inner side of the rope to heat and fuse the rope, and improve the reliability of the hot knife unlocking mechanism.

[0060] In some embodiments, the bottom surface of the base 11 is concave to form a first groove 14, the top surface of the first groove 14 extends outward along the axial direction of the guide rod 12 to form a first boss 141, and the first boss 141 extends downward on both sides parallel to the extension direction of the first groove 14 to form side walls; the top surface of the second device 20 is concave to form a second groove 21, the bottom surface of the second groove 21 extends outward along the axial direction of the guide rod 12 to form a second boss 211, and the second boss 211 extends upward on both sides parallel to the extension direction of the first groove 14 to form side walls; the rope 30 is wound around the first groove 14 and At the second groove 21, the bottom surface of the base 11 can be concave upward to form a first groove 14, and the top surface of the first groove 14, that is, the concave plane of the first groove 14 can extend along the axial direction of the guide rod 12 to form a first boss 141. The first boss 141 can extend downward on both sides parallel to the extension direction of the first groove 14 to form side walls, so that the longitudinal section of the first boss 141 and its side walls is U-shaped, and the side walls of the first boss 141 are connected to the side walls of the first groove 14, so that the space formed between the first boss 141 and its side walls is continuous with the first groove 14, which is used to accommodate the rope 30. The rope 30 can be wound around the outside of the first device 10 and the second device 20. The rope 30 wound around the outside of the first device 10 can be set in the first groove 14 so that the rope 30 abuts against the top surface of the first groove 14, and the rope 30 can abut against the first boss 141 formed by the top surface of the first groove 14 extending outward along the axial direction of the guide rod 12. The lateral deviation of the rope 30 can be limited by the side wall of the first groove 14 and the side wall formed by the first boss 141. The top surface of the second device 20 can be concave downward to form a second groove 21. The bottom surface of the second groove 21, that is, the concave plane of the second groove 21, can extend outward along the axial direction of the guide rod 12 to form a second boss 211. The second boss 211 extends upward to form side walls on both sides parallel to the extension direction of the first groove 14, so that the longitudinal section of the second boss 211 and its side walls is U-shaped, and the side walls of the second boss 211 are connected to the side walls of the second groove 21, so that the space formed between the second boss 211 and its side walls is continuous with the second groove 21, which is used to accommodate the rope 30. The rope 30 can be wound around the first device 10 and the second device 20. The rope 30 wound around the second device 20 can be arranged in the second groove 21, so that the rope 30 abuts against the bottom surface of the second groove 21, and the rope 30 can abut against the second boss 211 formed by the bottom surface of the second groove 21 extending outward along the axial direction of the guide rod 12. The sidewall of the second groove 21 and the sidewall formed by the second boss 211 can limit the lateral deviation of the rope 30. The rope 30 can be wound around the first groove 14 and the second groove 21, and the deviation of the rope 30 can be limited by the sidewall of the first groove 14 and the sidewall of the second groove 21, so as to ensure the stability of the rope 30 wound around the first device 10 and the second device 20, and improve the stability of the hot knife unlocking mechanism in the locked state.The first boss 141 and the second boss 211 can be used for rounding the end of the rope 30 to prevent the end edges of the first boss 141 and the second boss 211 from wearing the rope 30. The depth of the second groove 21 can be greater than the first groove 14. Since the rope 30 may expand in cross section after being melted by the hot knife, the cross-sectional area of ​​the rope 30 increases. Since the first device 10 is fixed to the first component, the first component can be a fixed part, and the second device 20 is fixed to the second component, the rope 30 can be located in the space formed by the second groove 21 and the surface of the second component. The second component can be a movable component. When the hot knife unlocking mechanism is unlocked, the second component can be separated from the first component. Therefore, the rope 30 after melting needs to slide out of the space formed by the second groove 21 and the surface of the second component, so that the rope 30 is no longer wrapped outside the first groove 14 and the second groove 21, so as to prevent the rope 30 from hooking the second component and affecting its operation. Therefore, it is necessary to increase the depth of the second groove 21 so that the rope 30 with expanded cross section can pass smoothly, avoid the rope 30 being hooked on the second component and affecting its operation, and ensure the reliability of the hot knife unlocking mechanism. The first groove 14, the first boss 141, the second groove 21 and the second boss 211 provided in this embodiment can be used to wind the rope 30, avoid the rope 30 from deflecting or falling off during the winding process, and ensure the stability of the rope 30 during the winding process.

[0061] In some embodiments, a first adhesive layer may be formed in the first groove 14 to cover the portion of the rope 30 located in the first groove 14; and / or a second adhesive layer may be formed in the second groove 21 to cover the portion of the rope 30 located in the second groove 21. After the rope 30 is wound around the first groove 14 and the second groove 21, as shown in FIG. Figure 3 As shown, glue can be applied to the rope 30 winding part of the first groove 14, so that a first adhesive layer is formed in the first groove 14, and the first adhesive layer can cover the rope 30 located in the first groove 14, and the first adhesive layer can also cover part of the side wall of the first groove 14, so that the rope 30 in the first groove 14 is fixed to the first groove 14. After the rope 30 is wound around the first groove 14 and the second groove 21, as shown in FIG. Figure 2As shown, glue can be applied to the rope 30 winding part of the second groove 21, so that a second adhesive layer is formed in the second groove 21, and the second adhesive layer can cover the part of the rope 30 located in the second groove 21, and the second adhesive layer can also cover part of the side wall of the second groove 21, so that part of the rope 30 at the second groove 21 is fixed to the second groove 21. In some cases, only one hot knife assembly 40 needs to work to melt the rope 30 to achieve the unlocking of the hot knife unlocking mechanism. After the hot knife assembly 40 melts the rope 30, only one rope 30 section is generated, and only the first adhesive layer or the second adhesive layer can be provided. A second adhesive layer may be formed in the second groove 21 so that part of the rope 30 in the second groove 21 is fixed to the second groove 21; when the hot knife unlocking mechanism is unlocked, the hot knife assembly 40 melts the rope 30 to produce a section; when driven by an external force, the rope 30 may be detached from the first device 10, and only remain on the second device 20, and partially fixed to the second groove 21; a first adhesive layer may also be formed in the first groove 14 so that part of the rope 30 in the first groove 14 is fixed to the first groove 14; when the hot knife unlocking mechanism is unlocked, the hot knife assembly 40 melts the rope 30 to produce a section; when driven by an external force, the rope 30 may be detached from the second device 20, and only remain on the first device 10, and partially fixed to the first groove 14. The second device 20 can be fixedly connected to the second component, and the second component can be a movable component. The rope 30 is separated from the second device 20 by the first adhesive layer and is only retained on the first device 10, which can prevent the rope 30 from being hooked on the second component and other movable structures, and can ensure that the hot knife unlocking mechanism and the first component and the second component maintain normal operation, thereby improving the reliability and safety of the hot knife unlocking mechanism during the locking and unlocking process. In addition, in some cases, the hot knife unlocking mechanism can be unlocked only by two hot knife assemblies 40 working simultaneously to melt the rope 30 from different positions. After the hot knife assembly 40 melts the rope 30, only two rope 30 sections are generated, and the first adhesive layer and the second adhesive layer can be set at the same time. Since the two hot knife assemblies 40 work simultaneously to melt the rope 30, it is necessary to ensure the timeliness of the two hot knife assemblies 40 so that the two hot knife assemblies 40 can melt the rope 30 at the same time; if the timeliness of the two hot knife assemblies 40 is poor, the hot knife on one side may melt the rope 30 before the hot knife on the other side. If the rope 30 is only wound outside the first device 10 and the second device 20, after the hot knife on one side melts the rope 30, the rope 30 will release tension and cause the rope 30 to loosen, and the hot knife on the other side cannot melt the rope 30, resulting in the failure of the hot knife unlocking mechanism to unlock.In this case, the first adhesive layer and the second adhesive layer can be provided at the same time, so that part of the rope 30 located in the first groove 14 is fixed to the first groove 14, and part of the rope 30 located in the second groove 21 is fixed to the second groove 21, so that after the hot knife assembly 40 on one side first melts the rope 30, the rope 30 that needs to be melted by the hot knife assembly 40 on the other side can remain locked until it is melted by the hot knife assembly 40. After the hot knives on both sides melt the rope 30, two cross sections are generated in the rope 30. The melted part of the rope 30 is fixed to the first groove 14 and retained in the first device 10, and the other part of the melted rope 30 is fixed to the second groove 21 and retained in the second device 20, which can prevent the melted rope 30 from loosening and falling to affect the operation of the first component and the second component. The reliability and safety of the hot knife unlocking mechanism in the locking and unlocking process are improved.

[0062] In some embodiments, the first boss 141 and / or the second boss 211 may be provided with a fixed end for fixing the starting end or the ending end of the rope 30. The fixed end may be a mounting hole 212 opened in the first boss 141 and the second boss 211. Fig.10 , Fig.11 As shown, the mounting hole 212 located on the second boss 211 can be opened along the width direction of the second boss 212, such as Fig.11 As shown, the mounting hole 212 can be set through the second boss 211, and can be used for the rope 30 to pass through and fix. Fig.11 As shown, the middle section of the mounting hole 212 can form a threaded section 2121, which can be provided with an internal thread, so as to facilitate the installation of screws and fix the rope to the mounting hole 212 by the screws; light holes 2122 can be formed at both ends of the mounting hole 212, without threads, and the inner diameter of the light hole 2122 can be larger than the inner diameter of the threaded section 2121, so that the starting end and the ending end of the rope can be respectively wound around the fixing screws, and the screw is fixed to the threaded section 2121 of the mounting hole 212 to fix the starting end and the ending end of the rope 30, and the rope 30 wound around the outer peripheral side of the screw can be accommodated through the light hole 2122, so that the rope 30 wrapped around the screw is fixed to the mounting hole 212 with the screw, avoiding the rope from being squeezed and broken during the process of fixing the rope by the screw, so as to ensure that the rope 30 can be pressed and wound around the first boss 141 and the second boss 211, avoiding the poor locking effect caused by the loosening of the ends of the rope 30, and ensuring the locking effect, thereby improving the safety of the locking of the rope 30.

[0063] The first boss 141 may be provided with a starting fixed end and a terminating fixed end, which are used to fix the starting end and the terminating end of the rope 30 respectively. The starting fixed end and the terminating fixed end may be the two ends of the mounting hole 212 respectively. The starting end of the rope 30 may be wound around a screw, and the screw may be fixed to the side of the mounting hole 212 close to the first groove 14, so that the rope is fixed by the screw in the light hole of the mounting hole 212 located close to the first groove 14, and the starting end of the rope 30 is fixed to the starting fixed end of the mounting hole 212, and the rope 30 is wound around the outside of the first device and the second device. After that, the rope 30 is wound, and the terminating end of the rope 30 is wound around the first boss 141, so that the number of turns of the rope 30 wound around the outside of the first device 10 and the second device 20 is consistent at any position, so as to ensure that the locking force provided by the rope 30 to the first device 10 and the second device 20 is uniform. Fig.10 As shown, the fixed end 211 can be provided on the second boss 211, and the second boss 212 can be provided with a starting fixed end and a terminating fixed end. The starting fixed end and the terminating fixed end can be the two ends of the mounting hole 212 respectively, the starting end of the rope 30 can be wound around the screw, and the screw can be fixed by the threaded section 2121, so that the screw is fixed to the side of the mounting hole 212 close to the second groove 21, so that the rope is fixed by the screw in the light hole 2122 of the mounting hole 212 close to the second groove 21, so that the starting end of the rope 30 is fixed to the starting fixed end of the mounting hole 212, and the rope 30 is wound around the outside of the first device 10 and the second device 20, and then the rope 30 is wound, and the terminating end of the rope 30 is wound around the second boss 211, so that the rope 30 wound around the outside of the first device 10 and the second device 20 has the same number of turns at any position, so as to ensure that the locking force provided by the rope 30 to the first device 10 and the second device 20 is uniform. The second boss 211 may include a side wall for limiting the deviation of the rope 30. A rope through hole 213 parallel to the mounting hole 212 may be opened on the side wall of the second boss 211. The terminal end of the rope 30 located at the second boss 211 after winding is completed may be passed through the rope through hole 213. Both ends of the inner wall of the rope through hole 213 may be rounded to prevent the rope 30 from being worn. The terminal end of the rope 30 is wound around another screw and the screw is fixed to the side of the mounting hole 212 away from the second groove 21, so that the rope is fixed by the screw in the light hole 2122 of the mounting hole 212 located on the side away from the second groove 21, and the terminal end of the rope 30 is fixed to the terminal fixed end of the mounting hole 212 to complete the fixation of the terminal end of the rope.

[0064] In other embodiments, the first boss may also be provided with a mounting hole 212 as in the above-mentioned embodiment. The mounting hole 212 located on the first boss 141 may be provided along the width direction of the first boss 141. The mounting hole 212 may be arranged through the first boss 141, and may be used for the rope 30 to pass through and be fixed. The middle section of the mounting hole 212 may form a threaded section 2121, and may be provided with an internal thread, so as to facilitate the installation of screws and fix the rope to the mounting hole 212 by the screws. Light holes 2122 may be formed at both ends of the mounting hole 212, and no threads may be provided. The inner diameter of the light hole 2122 may be larger than the inner diameter of the threaded section 2121, so that the starting end and the ending end of the rope can be respectively wound around the fixing screws, and the screw is fixed to the threaded section 2121 of the mounting hole 212 to fix the starting end and the ending end of the rope 30. The rope 30 wound around the outer peripheral side of the screw can be accommodated through the light hole 2122, so that the rope 30 wrapped around the screw is fixed to the mounting hole 212 with the screw, thereby avoiding the rope from being squeezed out during the process of fixing the rope by the screw. The first boss 141 may include a side wall for limiting the deviation of the rope 30. A rope through hole 213 parallel to the mounting hole 212 may be opened on the side wall of the first boss 141. The terminal end of the rope 30 located at the first boss 141 after winding is completed may be passed through the rope through hole 213. The two ends of the inner wall of the rope through hole 213 may be rounded to prevent the rope 30 from being worn, ensure the safety of the rope 30, and avoid the rope 30. The terminal end of the rope 30 is wound around another screw and the screw is fixed to the side of the mounting hole 212 away from the first groove 14, so that the rope is fixed by the screw in the light hole of the mounting hole 212 located on the side away from the first groove 14, and the terminal end of the rope 30 is fixed to the terminal fixed end of the mounting hole 212 to complete the fixation of the terminal end of the rope. In other embodiments, the first boss 141 and the second boss 211 may be provided with fixed ends respectively, so that the first boss 141 and the second boss 211 are provided with mounting holes 212 respectively, so that the starting fixed end and the ending fixed end may be respectively provided on the first boss 141 and the second boss 211. The fixed ends provided on the first boss 141 and the second boss 211 provided in this embodiment can be used to fix the starting end and the ending end of the rope 30 wound around the outside of the first device 10 and the second device 20, so as to facilitate the fixing of the rope 30 and adjust the pre-tightening force of the rope 30 on the first device 10 and the second device 20 during the process of winding the rope 30, so as to ensure that the rope 30 can be locked and avoid the rope 30 from falling off, so as to facilitate the installation and removal of the rope 30. After completing the unlocking once, the starting end and the ending end of the rope 30 can be removed from the fixed ends of the first boss 141 and the second boss 211, and a new rope 30 can be replaced, and the rope 30 can be rewound to restore the locked state. Through the mounting hole 212 of this embodiment, the threaded section 2121 of the mounting hole 212 can be fixedly connected with the screws wound around the starting end and the ending end of the rope 30 to ensure the stability of the rope 30 when it is fixed to the fixed end.The light holes 2122 at both ends of the mounting hole 212 can be used to accommodate ropes, so that when the screws wound around the starting end and the ending end are respectively installed on the fixed ends, the ropes wound around the screws at the starting end and the ending end can be located within the light holes 2122, thereby preventing the ropes from being squeezed off when the screws are screwed into the mounting holes. This ensures that the ropes 30 provide a pre-tightening force for the first device 10 and the second device 20, thereby preventing the ropes 30 from being squeezed off and loosening, and thereby improving the reliability of the hot knife unlocking mechanism.

[0065] In some embodiments, Figure 4 As shown, the first device 10 may further include: a positioning platform 15, which is disposed on the top surface of the base 11 and protrudes toward the second device 20; Fig.10 As shown, the second device 20 also includes: a positioning groove 22, which is arranged on the bottom surface of the second device 20 and cooperates with the positioning platform 15. The first device 10 may also include a positioning platform 15, and the top surface of the base 11 may be formed with an upwardly protruding positioning platform 15 vertically upward toward the second device 20. There may be multiple positioning platforms 15, and the positioning platforms 15 may be respectively arranged on the two opposite sides of the top surface of the base 11 to facilitate the installation and positioning of the first device 10 and the second device 20. The longitudinal section of the positioning platform 15 may be trapezoidal, so that the top surface of the first device 10 is a structure with convex sides and concave in the center. The bottom surface of the second device 20 may be formed with a positioning groove 22 that cooperates with the positioning platform 15, so that the positioning groove 22 can accommodate the positioning platform 15. The positioning groove 22 can be sprayed with a high friction coating to increase the friction between the positioning groove 22 and the positioning platform 15, so as to limit the relative lateral movement of the first device 10 and the second device 20 in the compressed state, ensure that the first device 10 and the second device 20 remain relatively stable in the locked state, and ensure the safety of the hot knife unlocking mechanism when the first component and the second component are compressed and locked.

[0066] In some embodiments, the positioning platform 15 is sprayed with a high friction coating on the contact surface that cooperates with the positioning groove 22; and / or, the positioning groove 22 is sprayed with a high friction coating on the contact surface that cooperates with the positioning platform 15. Since the positioning platform 15 and the positioning groove 22 are fixed by the compression force provided by the rope 30, the positioning platform 15 and the positioning groove 22 may move relative to each other in the compressed state of the rope 30, resulting in relative movement of the first device 10 and the second device 20, and the locking of the first device 10 and the second device 20 by the rope 30 fails. Therefore, the high friction coating can be sprayed on the contact surface that cooperates with the positioning platform 15 and the positioning groove 22, and the high friction coating can be sprayed on the contact surface that cooperates with the positioning groove 22 and the positioning platform 15, and the friction force of the positioning groove 22 and the positioning platform 15 can be increased by the high friction coating, so as to limit the relative lateral movement of the first device 10 and the second device 20 in the compressed state, and ensure that the first device 10 and the second device 20 remain relatively stable in the locked state. In addition, since the metal surfaces in contact with each other are prone to cold welding in a low temperature and vacuum environment, the atoms on the surfaces of the parts in contact with each other are bonded, so that the two parts in contact with each other are bonded and cannot be separated. Since the surfaces of the positioning platform 15 and the positioning groove 22 are in contact with each other to cooperate with each other, cold welding is prone to occur. By spraying a high friction coating on the surfaces of the positioning platform 15 and the positioning groove 22, the cold welding phenomenon can be effectively avoided, and the adhesion of the positioning groove 22 and the positioning platform 15 can be avoided, resulting in the first device 10 and the second device 20 being unable to be separated. In some cases, such as when the first component is a satellite and the second component is a solar panel or other movable component of the satellite, since the hot knife unlocking mechanism needs to operate in a vacuum and low temperature environment, the first device 10 and the second device 20 may be cold welded in a vacuum and low temperature environment, so that the mutually cooperating positioning groove 22 and the positioning platform 15 are bonded, resulting in the contact surface of the first device 10 and the second device 20 being bonded, so that the first device 10 and the second device 20 cannot be separated after the hot knife melts the rope, resulting in unlocking jams and unlocking failures. The high friction coating on the surface of the positioning groove 22 can also effectively avoid the occurrence of cold welding, prevent the positioning groove 22 and the positioning platform 15 from adhering to each other, and prevent the first device 10 and the second device 20 from being separated, which can effectively improve the safety of the hot knife unlocking mechanism.

[0067] In some embodiments, Fig.12As shown, the hot knife unlocking mechanism may further include: a winding tool 50, which is detachably mounted on the outside of the first device 10, and is used to drive the first device 10 and the second device 20 to rotate so that the rope 30 is wound around the outside of the first device 10 and the second device 20. The winding tool 50 may be a columnar element mounted on the outside of the first device 10, and a plane may be formed on the outer side of the winding tool 50, which is used to mount the hot knife unlocking mechanism on a winding machine, so that the rope 30 can be wound by the winding machine. The plane formed on the outer side of the winding tool 50 is used to cooperate with the winding machine, so that the winding machine can drive the winding tool 50 to rotate to drive the rotation of the first device 10 and the second device 20, so that the rope 30 can be wound around the outside of the first device 10 and the second device 20. The winding tool 50 is detachably mounted on the outside of the first device 10. When the first device 10 and the second device 20 need to be locked, the winding tool 50 can be mounted on the outside of the first device 10, and the winding tool 50 is installed in conjunction with the winding machine. The winding machine drives the winding tool 50 to rotate the first device 10 and the second device 20, so that the rope 30 can be wound around the outside of the second device 20. After the winding of the rope 30 is completed, the rope 30 can be fixed to the fixed end, and the hot knife unlocking mechanism is removed from the winding machine, and the winding tool 50 is removed from the outside of the first device 10 to complete the winding of the rope 30. The winding tool 50 can be installed on the outside of the first device 10 only during the process of winding the rope 30, and can be removed after the winding of the rope 30 is completed, so that the hot knife unlocking mechanism can be installed on the first component and the second component later, avoiding the winding tool 50 affecting the installation. The winding tool 50 of this embodiment can be used to easily wind the rope 30 around the outside of the first device 10 and the second device 20, avoiding the problem of small locking force or uneven force caused by manually winding the rope 30. The winding tool 50 can be connected to the winding machine to perform more accurate winding according to the preset rope 30 tension and the required number of rope 30 turns, so as to ensure the pre-tightening force of the rope 30 on the first device 10 and the second device 20. The detachable winding tool 50 can be installed on the outside of the first device 10 only during the process of winding the rope 30, and can be removed from the outside of the first device 10 after the rope 30 is wound, so as to avoid interference between the winding tool 50 and the first component, the second component and other related components, and ensure the safety of the installation of the hot knife unlocking mechanism.

[0068] Based on the same inventive concept, the present disclosure also provides an installation method, which is applied to the hot knife unlocking mechanism of any of the above embodiments, such as Fig.13 As shown, it may include: step S110 to step S130.

[0069] Step S110, install the hot knife assembly 40 on the first device 10. The hot knife assembly 40 can be installed on the first device 10 so that the hot knife assembly 40 can slide on the first device 10. The guide rod 12 can be first fixedly installed on the first device 10. The guide rod 12 can be formed with an external thread for installation on the first device 10, or the guide rod 12 can be fixed to the first device 10 after applying high-strength thread glue on the outer peripheral side of the guide rod 12. Then, the spring 42 is sleeved outside the guide rod 12, and the tool holder 41 is installed on the guide rod 12, so that the spring 42 is compressed, one end abuts against the first device 10, and the other end abuts against the tool holder 41, and the limit screw 13 is installed on the internal thread of the end of the guide rod 12; the thread of the limit screw 13 can be first applied with high-strength thread glue, and then the limit screw 13 is installed on the internal thread of the end of the guide rod 12 to tighten the connection between the limit screw 13 and the guide rod 12, so that the limit screw 13 can limit the tool holder 41. Finally, the knife bar 43 can be fixedly installed on the knife holder 41 to complete the assembly of the hot knife assembly 40 and install the hot knife assembly 40 on the first device 10.

[0070] Step S120, docking the first device 10 with the second device 20. The first device 10 with the hot knife assembly 40 installed is docked with the second device 20, so that the top of the first device 10 abuts against the bottom of the second device 20, and the positioning and docking of the first device 10 and the second device 20 can be achieved through the mutual cooperation of the positioning platform 15 of the first device 10 and the positioning groove 22 of the second device 20.

[0071] Step S130, the rope 30 is wound around the outside of the first device 10 and the second device 20, and the hot knife assembly 40 is abutted against the inside of the rope 30. The rope 30 can be wound around the outside of the first device 10 and the second device 20 that have been docked, so that the rope 30 locks the first device 10 and the second device 20 to prevent the first device 10 and the second device 20 from being separated. The first device 10 and the second device 20 can be provided with a fixed end for fixing the end of the rope 30, so that the rope 30 locks the first device 10 and the second device 20. A detachable winding tool 50 can be provided on the outside of the first device 10, and the winding tool 50 is installed on the winding machine, and the first device 10 and the second device 20 are driven to rotate, and the rope 30 is wound around the outside of the first device 10 and the second device 20 and locked. After the rope 30 is wound, the winding tool 50 can be removed. The hot knife assembly 40 can be pushed outward under the elastic force of the spring 42 so that the hot knife assembly 40 abuts against the inner side of the rope 30, completing the installation of the hot knife unlocking mechanism and putting the current hot knife unlocking mechanism in a locked state.

[0072] Through the installation method of this embodiment, the assembly of the hot knife unlocking mechanism can be realized, the operation is simple and fast, the hot knife assembly 40 can be installed first, and the rope 30 can be wound last, so that the rope 30 is wound around the outside of the first device 10 and the second device 20, and the hot knife assembly 40 is located inside the rope 30, which can facilitate the hot knife assembly 40 to melt the rope 30 from the inside to the outside, so as to avoid the cross-sectional expansion of the rope 30, and at the same time avoid the rope 30 hooking the first device 10, the second device 20 and other components when unlocking, thereby improving the safety of the hot knife unlocking mechanism. If the rope 30 is wound first and the hot knife assembly 40 is installed later, the installation position of the hot knife assembly 40 may be tilted with the rope 30, so that the hot knife assembly 40 is tilted when the rope 30 is melted, resulting in uneven melting surface, affecting the unlocking efficiency; the installation method of this embodiment in which the hot knife assembly 40 is installed first and the rope 30 is wound last can avoid the error of the position of the hot knife assembly 40 during the process of winding the rope 30, and improve the accuracy of the installation of the hot knife unlocking mechanism.

[0073] In some embodiments, in step S130, after the rope 30 is wound around the outside of the first device 10 and the second device 20, Fig.14As shown, the installation method may also include: step S140, installing the first device 10 on the first component; step S150, installing the second device 20 on the second component. After the rope 30 is wound, that is, the hot knife unlocking mechanism is assembled, the first device 10 of the hot knife unlocking mechanism is installed on the first component, and the second device 20 is installed on the second component, so that the hot knife unlocking mechanism is installed on the first component and the second component that need to be locked and separated. The first component may be a fixed part such as a base or a component with a larger volume or weight relative to the second component to ensure stability during the locking and separation process; the second component is a component that is movable relative to the first component, such as a foldable thin plate, etc. The second component may be provided with an installation hole for installing the first device 10, so as to fix the first device 10, so that the rope 30 passes through the inside of the second component and provides a pressing force for the second component. The first component may be a satellite, and the second component may be a solar panel installed on the side of the satellite. Before the satellite is launched, the solar panel needs to be folded and locked with the satellite. The satellite and the solar panel can be locked by a hot knife unlocking mechanism to reduce the volume for the satellite launch. When the satellite is launched and enters orbit, the solar panel needs to be unfolded so that the solar panel can better absorb sunlight and power the satellite. The hot knife can be used to melt the rope 30 to unlock the hot knife unlocking mechanism and unfold the solar panel. The second component can also be other components that can be unfolded and moved. When the hot knife unlocking mechanism is locked, the second component is folded and locked with the first component under the locking force provided by the hot knife unlocking mechanism. After the hot knife unlocking mechanism is unlocked, the hot knife unlocking mechanism no longer provides locking force to the first component and the second component, so that the first component and the second component are unlocked and the second component can be unfolded and moved. By first assembling the hot knife unlocking mechanism and then fixing the hot knife unlocking mechanism to the first component and the second component, the installation efficiency of the hot knife unlocking mechanism can be improved, and the difficulty in installing the hot knife unlocking mechanism due to the large size of the first component and the second component can be avoided. The installation efficiency of the hot knife unlocking mechanism can be improved, and the disassembly and assembly of the hot knife unlocking mechanism on the first component and the second component are facilitated.

[0074] In some embodiments, in step S130, after the rope 3030 is wrapped around the outside of the first device 1010 and the second device 2020, Fig.15 As shown, the installation method also includes: step S160, and / or, step S170.

[0075] Step S160, glue is applied to the portion where the rope 30 is wound around the first device 10, so that the rope 30 is partially fixed to the first device 10. After executing step S130, the winding of the rope 30 is completed, and glue can be applied to the outside of the rope 30 wound around the first device 10, so that a first adhesive layer is formed on the outside of the rope 30, and the first adhesive layer can cover the portion of the rope 30 wound around the outside of the first device 10, and can also cover a portion of the first device 10, so that the rope 30 and the first device 10 are fixed through the first adhesive layer.

[0076] Step S170, glue is applied to the portion where the rope 30 is wound around the second device 20, so that the rope 30 is partially fixed to the second device 20. After executing step S130, the winding of the rope 30 is completed, and glue can be applied to the outside of the rope 30 wound around the second device 20, so that a second adhesive layer is formed on the outside of the rope 30, and the second adhesive layer can cover the portion of the rope 30 wound around the outside of the second device 20, and can also cover a portion of the second device 20, so that the rope 30 and the second device 20 are fixed through the second adhesive layer.

[0077] Different installation steps can be adopted according to the unlocking requirements of the hot knife unlocking mechanism. In some cases, the hot knife unlocking mechanism only needs to melt the rope 30 through a hot knife assembly 40 to achieve unlocking. In this case, only step S160 can be performed, and glue is applied where the rope 30 is wrapped around the first device 10 to fix the rope 30 partially to the first device 10, so that after the hot knife assembly 40 melts the rope 30, the melted rope 30 is loosened from the second device 20 and retained in the first device 10 to achieve unlocking; or only step S170 can be performed, and glue is applied where the rope 30 is wrapped around the second device 20 to fix the rope 30 partially to the second device 20, so that after the hot knife assembly 40 melts the rope 30, the melted rope 30 is loosened from the first device 10 and retained in the second device 20 to achieve unlocking. In other cases, the hot knife unlocking mechanism needs to simultaneously fuse the rope 30 through two hot knife assemblies 40 to achieve unlocking. In this case, steps S160 and S170 can be executed to fix the rope 30 partially to the first device 10 and partially to the second device 20. After the hot knife assembly 40 fuses the rope 30, the fused rope 30 is retained at the first device 10 and the second device 20 respectively, thereby preventing the fused rope 30 from loosening and falling and affecting the operation of the first device 10, the second device 20 and the first component and the second component respectively fixed thereto, thereby improving the safety of the hot knife unlocking mechanism.

[0078] Based on the same inventive concept, the present disclosure also provides a satellite, including: a satellite body, a movable part, and a hot knife unlocking mechanism as described in any of the above embodiments.

[0079] The movable component is arranged on the side of the satellite body. The movable component may be arranged on the side of the satellite body; the movable component may be a solar panel installed on the side of the satellite. Before the satellite is launched, the solar panel needs to be folded and locked with the satellite. The satellite and the solar panel can be locked by a hot knife unlocking mechanism to reduce the volume for the satellite launch; when the satellite enters the orbit after launch, the solar panel needs to be unfolded so that the solar panel can better absorb sunlight and power the satellite. The hot knife can be used to melt the rope 30 to unlock the hot knife unlocking mechanism and unfold the solar panel.

[0080] The hot knife unlocking mechanism, the first device 10 is fixedly connected to the satellite body, and the second device 20 is fixedly connected to the movable part, which is used to lock or unlock the satellite body and the movable part. The first device 10 of the hot knife unlocking mechanism can be fixedly connected to the satellite body, and the second device 20 can be fixedly connected to the movable part. When the hot knife unlocking mechanism is in the locked state, the rope 30 is wound around the first device 10 and the second device 20, so that the first device 10 and the second device 20 are locked, so that the satellite body and the movable part respectively connected to the first device 10 and the second device 20 are locked by the pre-tightening force provided by the rope 30. When it is necessary to unlock the hot knife unlocking mechanism, the hot knife assembly 40 can be heated to melt the rope 30, so that the first device 10 and the second device 20 can be separated, so that the satellite body and the movable part are unlocked, and the movable part can be unfolded to operate normally. The satellite provided by this embodiment can ensure that the satellite can be locked and fixed and quickly unfolded during the process from launch to stable operation, with high efficiency and safety.

[0081] The present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of the present application can be appropriately combined. In the context of the present application, unless the context clearly indicates an exception, the words "one", "one", "a kind of" and / or "the" do not specifically refer to the singular, but may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive enumeration, and the method or device may also include other steps or elements.

[0082] Similarly, it should be noted that in order to simplify the description disclosed in this application and thus help understand one or more application embodiments, in the foregoing description of the embodiments of this application, multiple features are sometimes merged into one embodiment, drawing or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than the features mentioned in the claims. In fact, the features of the embodiment are less than all the features of the single embodiment disclosed above. The basic concepts have been described above. Obviously, for those skilled in the art, the above disclosure is only an example and does not constitute a limitation of this application. Although it is not explicitly stated here, those skilled in the art may make various modifications, improvements and corrections to this application. Such modifications, improvements and corrections are suggested in this application, so such modifications, improvements and corrections still belong to the spirit and scope of the embodiments of this application.

Claims

1. A hot knife unlocking mechanism, used to lock or unlock the first component and the second component, comprising: A first device, used for fixed connection with the first component; A second device, used for fixed connection with the second component; A rope, wound around the first device and the second device, and the first device and the second device are locked by the rope; The hot knife assembly is slidably connected to the first device and abuts against the inner side of the rope to heat and fuse the rope.

2. The hot knife unlocking mechanism according to claim 1, wherein: The first device comprises: A base, used for fixedly connecting with the first component; A guide rod, fixedly disposed in the middle of the base and extending toward the inner side of the rope; The hot knife assembly is slidably arranged on the guide rod.

3. The hot knife unlocking mechanism according to claim 2, wherein: The hot knife assembly comprises: A tool holder, wherein a guide hole is provided in the middle thereof, and the guide hole is sleeved on the guide rod so that the tool holder can slide along the guide rod; A spring is sleeved outside the guide rod, one end of the spring is in contact with the base, and the other end of the spring is in contact with the tool holder; The knife bar is fixed to the knife holder and abuts against the inner side of the rope under the action of the elastic force of the spring, so as to heat and fuse the rope.

4. The hot knife unlocking mechanism according to claim 3, wherein: The outer end of the guide rod is provided with an internal thread along the axial direction of the guide rod; The first device further comprises: a limit screw, which cooperates with the internal thread of the guide rod and is used to limit the maximum sliding stroke of the tool holder on the guide rod from inside to outside.

5. The hot knife unlocking mechanism according to claim 3, wherein: A first plane extending in the axial direction is formed on one side of the outer peripheral surface of the guide rod; The cross section of the guide hole is arranged corresponding to the cross section of the guide rod, forming a second plane extending along the axial direction, and the second plane is slidably matched with the first plane to limit the rotation of the tool holder.

6. The hot knife unlocking mechanism according to claim 3, wherein: The guide rod is fixedly arranged on the base, so that the guide rod extends from both sides of the base to the outside of the base respectively; The hot knife unlocking mechanism comprises two hot knife assemblies which are respectively slidably arranged on two sides of the guide rod extending outside the base.

7. The hot knife unlocking mechanism according to claim 3, wherein: The inner wall of the guide hole is provided with chamfers at both ends along the axial direction of the guide hole, so as to reduce the sliding resistance of the tool holder when sliding on the guide rod.

8. The hot knife unlocking mechanism according to claim 2, wherein: The bottom surface of the base is concavely formed with a first groove, the top surface of the first groove extends outwardly along the axial direction of the guide rod to form a first boss, and the first boss extends downwardly on both sides parallel to the extending direction of the first groove to form side walls; The top surface of the second device is concave to form a second groove, the bottom surface of the second groove extends outward along the axial direction of the guide rod to form a second boss, and the second boss extends upward on both sides parallel to the extension direction of the first groove to form side walls; The rope is wound around the first groove and the second groove.

9. The hot knife unlocking mechanism according to claim 8, wherein: A first adhesive layer is formed in the first groove, covering the portion of the rope located in the first groove; and / or, A second adhesive layer is formed in the second groove, covering the portion of the rope located in the second groove.

10. The hot knife unlocking mechanism according to claim 8, wherein: The first boss and / or the second boss is provided with a fixing end for fixing the starting end or the ending end of the rope.

11. The hot knife unlocking mechanism according to claim 2, wherein: The first device further comprises: a positioning platform, disposed on the top surface of the base and protruding toward the second device; The second device further comprises: a positioning groove, which is arranged on the bottom surface of the second device and cooperates with the positioning platform.

12. The hot knife unlocking mechanism according to claim 11, wherein: The positioning platform is sprayed with a high friction coating on the contact surface that matches the positioning groove; and / or, The contact surface of the positioning groove that matches the positioning platform is sprayed with a high friction coating.

13. The hot knife unlocking mechanism according to claim 1, wherein: The hot knife unlocking mechanism also includes: The wire winding tool is detachably mounted on the outside of the first device, and is used to drive the first device and the second device to rotate so that the rope is wound around the outside of the first device and the second device.

14. An installation method, applied to the hot knife unlocking mechanism according to any one of claims 1 to 13, comprising: installing the hot knife assembly on the first device; docking the first device with the second device; The rope is wound around the outside of the first device and the second device, and the hot knife assembly is abutted against the inside of the rope.

15. The installation method according to claim 14, wherein: After winding the rope around the outside of the first device and the second device, the installation method further includes: installing the first device on the first component; The second device is mounted on the second component.

16. The installation method according to claim 14, wherein: After winding the rope around the outside of the first device and the second device, the installation method further includes: Applying glue where the rope is wound around the first device to fix the rope portion to the first device; and / or, Glue is applied to the portion where the rope is wound around the second device to fix the rope portion to the second device.

17. A satellite, comprising: Satellite body; The movable part is arranged on the side of the satellite body; According to the hot knife unlocking mechanism as described in any one of claims 1-13, the first device is fixedly connected to the satellite body, and the second device is fixedly connected to the movable part, and is used to lock or unlock the satellite body and the movable part.

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