CN116085381A

CN116085381A - Space hinge mechanism

Info

Publication number: CN116085381A
Application number: CN202310113426.7A
Authority: CN
Inventors: 路斯成; 万军; 任伟; 赵明生
Original assignee: Shanghai Lanjian Hongqing Technology Co ltd
Current assignee: Shanghai Lanjian Hongqing Technology Co ltd
Priority date: 2023-02-15
Filing date: 2023-02-15
Publication date: 2023-05-09

Abstract

The invention provides a space hinge mechanism which is used for driving the unfolding action of an unfolding mechanism. The device comprises a main shaft, a male hinge, a female hinge, a constant force spring and a lock hook; one side of the male hinge is fixedly connected with the main shaft through a self-aligning roller bearing, and a first extension plate and a second extension plate are arranged on the other side of the male hinge; one side of the female hinge is rotatably connected with the main shaft, and a third extension plate and a fourth extension plate are arranged on the other side of the female hinge; the first end of the constant force spring is fixedly arranged on the main shaft, and the second end of the constant force spring is connected with the male hinge; one end of the lock hook is arranged on the female hinge, and the other end of the lock hook is used as a buckling end for buckling with the male hinge; the male hinge is provided with a locking groove for the locking hook to be buckled at a position close to the second extension plate; when the external force of the compression hinge mechanism fails, the constant force spring drives the male hinge to rotate around the main shaft through the aligning roller bearing, so that the second extension plate and the fourth extension plate relatively move, and the locking hook slides into the locking groove to complete self locking.

Description

Space hinge mechanism

Technical Field

The invention relates to the technical field of aerospace, in particular to a space hinge mechanism.

Background

With the continuous and vigorous development of commercial aerospace, the market has increasingly demanded small and medium-sized solar wings, flat panel antennas and other expandable mechanisms, and a space hinge mechanism is one of important driving components of the aerospace expandable mechanisms. The space hinge mechanism not only realizes the basic unfolding driving function, but also needs to carry out comprehensive design analysis on the unfolding synchronism, the reliability, the structural compactness, the processing assembly difficulty and the like.

Because of the complex and varied space environments, the space hinge mechanism needs to ensure reliable self-locking after deployment due to the specificity of its working environment.

At present, the hinge mechanism applied to the aerospace equipment generally has the problems of high processing and assembling difficulty, poor reliability, easy blockage caused by vibration or foreign matters and the like, so that the space hinge mechanism capable of reliably self-locking is needed to be provided.

Disclosure of Invention

Aiming at the technical problems in the related art, the invention provides a space hinge mechanism which can stably move to a fully unfolded state according to design expectation, the unfolded flatness is adjustable, the self-locking reliability of the mechanism is high, and the application requirement of commercial aerospace on the hinge mechanism is met.

The invention provides a space hinge mechanism which is used for driving the unfolding action of an unfolding mechanism and comprises a main shaft, a male hinge, a female hinge, a constant force spring and a lock hook; one side of the male hinge is fixedly connected with the main shaft through a self-aligning roller bearing, and a first extension plate and a second extension plate are arranged on the other side of the male hinge; one side of the female hinge is rotatably connected with the main shaft, and a third extension plate and a fourth extension plate are arranged on the other side of the female hinge; the first extension plate and the third extension plate are used for keeping a pressed state after being subjected to external force, and the second extension plate and the fourth extension plate are used for installing an expandable mechanism; the first end of the constant force spring is fixedly arranged on the main shaft, and the second end of the constant force spring is connected with the male hinge; one end of the lock hook is arranged on the female hinge, and the other end of the lock hook is used as a buckling end for buckling with the male hinge; the male hinge is provided with a locking groove for the locking hook to be buckled at a position close to the second extension plate; under the compression action of external force, the female hinge and the main shaft can rotate relative to the male hinge at the same time, and the first extension plate and the third extension plate keep compression; when the external force fails, the constant force spring provides torsion force, and the male hinge can rotate around the main shaft through the self-aligning roller bearing, so that the second extension plate and the fourth extension plate move relatively, and the lock hook slides into the lock groove to complete self-locking.

In one embodiment, the spatial hinge mechanism of the present invention further comprises a latch hook base and a latch hook limiting device; the female hinge is provided with a lock hook base on one surface of the fourth extension plate adjacent to the second extension plate, the lock hook base is provided with a mounting hole in a direction parallel to the main shaft, and the lock hook is rotatably connected with the mounting hole of the lock hook base through a lock hook rotating shaft; a through hole perpendicular to the direction of the rotating shaft of the lock hook is formed in the position, close to the rotating shaft of the lock hook, of the lock hook; one end of the lock hook limiting device is arranged on the lock hook base, and the other end of the lock hook limiting device penetrates through the through hole and is used for limiting the lock hook to rotate along the lock hook rotating shaft.

In one embodiment, the lock hook limiting device comprises a guide screw, a nut, a lock hook spring and a spring gasket, wherein the guide screw, the nut, the lock hook spring and the spring gasket are arranged perpendicular to the rotating shaft direction of the lock hook; one end of the guide screw is arranged on the lock hook base, the other end of the guide screw sequentially penetrates through the lock hook spring, the spring gasket and the penetrating hole of the lock hook, and the nut is screwed on the guide screw from the other end of the guide screw so as to limit the lock hook to rotate along the lock hook rotating shaft.

In one embodiment, the female hinge is provided with a tightening screw for adjusting the unfolding planeness of the male hinge and the female hinge at a position close to the lock hook base, and the male hinge is provided with a limiting rod which is abutted with the tightening screw at a position close to the lock groove; after the lock hook is buckled with the lock groove and is tightly held, the limiting rod is in abutting contact with the jacking screw, so that the male hinge and the female hinge are limited to continuously move relatively.

In one embodiment, the male hinge is provided with a constant force spring connection unit at a position close to the limit rod; the constant force spring is connected with the male hinge through the constant force spring connecting unit.

In one embodiment, the constant force spring connection unit comprises a support rod, a lock nut and a swivel sleeve; one end of the supporting rod is of a nut structure, and the other end of the supporting rod sequentially penetrates through the rotating shaft sleeve and the locking nut and then is fixedly arranged in a supporting rod hole of the male hinge; the locking nut is used for locking the supporting rod in the supporting rod hole; the rotating shaft sleeve is rotatably sleeved on the supporting rod, and the second end of the constant force spring is rotatably connected with the supporting rod through the rotating shaft sleeve.

In any of the above embodiments, the spindle is provided with a spring connection hole, and the first end of the constant force spring is provided with a through hole, and the spring connection hole is fixedly connected with the through hole through a fixing bolt, so that the first end of the constant force spring is fixedly arranged on the spindle.

In one embodiment, a side of the female hinge away from the third extension plate and the fourth extension plate is provided with a first spindle hole and a second spindle hole; the female hinge is connected with the main shaft through the first main shaft hole and the second main shaft hole; at least one of the first main shaft hole and the second main shaft hole is an irregular hole, and a shaft shoulder is arranged at a position of the main shaft corresponding to the irregular hole; the irregular holes are matched with the shaft shoulders, so that the main shaft and the female hinge synchronously rotate.

In one embodiment, a first tightening screw hole is formed in the outer wall of the first main shaft hole, which is close to one side of the third extension plate, and a first tightening screw used for adjusting the unfolding planeness of the male hinge and the female hinge is arranged in the first tightening screw hole; a second tightening screw hole is formed in the outer wall, close to one side of the third extension plate, of the second main shaft hole, and a second tightening screw used for adjusting the unfolding planeness of the male hinge and the female hinge is arranged in the second tightening screw hole; and the male hinge is provided with a limiting rod which is used for simultaneously abutting against the first jacking screw and the second jacking screw at a position close to the locking groove.

In one embodiment, the locking groove is configured to form an arc surface on a surface opposite to the locking portion of the locking hook, so that the locking hook slides into the locking groove smoothly.

The space hinge mechanism optimizes the design of the hinge self-locking mechanism, ensures that the self-locking design of the movable lock hook and the motion dead point is more reliable in use under a complex application environment, improves the reliability of the hinge unfolding function and reduces the friction moment when the hinge is unfolded. The constant force spring is utilized to drive the hinge mechanism to be unfolded, so that the moment margin is ensured, too large impact is avoided when the hinge mechanism is unfolded in place, the hinge mechanism can be more compact, and the layout of the hinge mechanism is optimized.

Those skilled in the art will recognize additional features and advantages upon reading the detailed description, and upon viewing the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of the overall structure of a space hinge mechanism according to an embodiment of the present invention.

Fig. 2 is a schematic view of the structure of the space hinge mechanism in the compressed and retracted state according to the embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view of a spatial hinge mechanism according to an embodiment of the present invention in a post-deployment self-locking state.

Fig. 4 is a schematic structural diagram of a constant force spring and a constant force spring connection unit according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of a female hinge according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of a male hinge according to an embodiment of the present invention.

Detailed Description

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings. Spatially relative terms such as "under", "below", "under …", "low", "above", "over …", "high", and the like, are used for convenience of description to explain the positioning of one element relative to a second element and to represent different orientations of the device in addition to those shown in the figures. In addition, for example, "one element above/below another element" may mean that two elements are in direct contact, or that other elements are present between the two elements. Furthermore, terms such as "first," "second," and the like, are also used to describe various elements, regions, sections, etc., and should not be taken as limiting. Like terms refer to like elements throughout the description.

Referring to fig. 1, 2 and 3, the present invention provides a spatial hinge mechanism for driving the deployment of a deployable mechanism. The space hinge mechanism at least comprises a main shaft 1, a male hinge 2, a female hinge 3, a constant force spring 4 and a lock hook 5. One side of the male hinge 2 is fixedly connected with the main shaft 1 through a self-aligning roller bearing 6, and the other side is provided with a first extension plate 21 and a second extension plate 22 which are arranged at intervals. One side of the female hinge 3 is rotatably connected with the main shaft 1, and the other side is provided with a third extension plate 31 and a fourth extension plate 32 which are arranged at intervals. The first extension plate 21 and the second extension plate 22 are disposed substantially parallel to each other, and the third extension plate 31 and the fourth extension plate 32 are disposed substantially parallel to each other.

Wherein the first extension plate 21 and the third extension plate 31 are used for keeping a pressed state after being subjected to external force, and the second extension plate 22 and the fourth extension plate 32 are used for installing the unfolding mechanism. That is, when the first extension plate 21 and the third extension plate 31 are pressed against each other, the expandable mechanism is in a retracted state as the second extension plate 22 and the fourth extension plate 32 are operated in synchronization.

The first end of the constant force spring 4 is fixedly arranged on the main shaft 1, and the second end is connected with the male hinge 2. It should be noted that, the constant force spring 4 is disposed on the main shaft 1 in a semi-winding manner near the first end, so as to ensure that the constant force spring 4 can be stretched to increase the elastic force when the male hinge 2 rotates relative to the main shaft 1.

Further, one end of the latch hook 5 is disposed at a position of the fourth extension plate 32 close to the second extension plate 22, and the other end is used as a fastening end for fastening with the male hinge 2. Correspondingly, the male hinge is provided with a locking groove 23 for locking the locking hook 5 at a position of the second extending plate 22 close to the fourth extending plate. The lock hook 5 and the lock groove 23 are arranged in a shape matching mode, and the lock hook 5 and the lock groove 23 are configured to be capable of completing self-locking after the hinge mechanism is unfolded.

Under the compression action of external force, the female hinge 3 and the main shaft 1 can rotate relative to the male hinge 2 at the same time, after the female hinge and the main shaft rotate in place, the first extension plate 21 and the third extension plate 31 are fixed (as in the state of fig. 2) by using external force compression equipment, and are kept compressed, so that the unfolding mechanism is also folded. When the external force fails, the constant force spring 4 provides torsion force to drive the male hinge 2 to rotate around the main shaft 1 through the aligning roller bearing 6, so that the second extension plate 22 and the fourth extension plate 32 can relatively move around the axis of the main shaft 1, and meanwhile, the expandable mechanism is driven to be gradually expanded, and when the expandable mechanism is expanded in place, the lock hook 5 can slide into the lock groove 23 and complete self-locking (as shown in the state of fig. 1 or 3).

The space hinge mechanism simplifies the design of the self-locking mechanism of the hinge, improves the reliability of the hinge self-locking mechanism in use under complex application environment, and solves the problem of complex locking operation of the traditional hinge. The space hinge mechanism utilizes the self-aligning roller bearing to replace the traditional sliding bearing, so that the friction moment is small when the hinge is unfolded, and the reliability of the unfolding function is better.

Referring also to fig. 2 and 3, in one embodiment, the spatial hinge mechanism of the present invention further comprises a shackle base 51 and a shackle stop 52. The female hinge 3 is provided with a latch hook base 51 at a side of the fourth extension plate 32 adjacent to the second extension plate 22, the latch hook base 51 is provided with a mounting hole in a direction parallel to the main shaft 1, and the latch hook 5 is rotatably connected with the mounting hole of the latch hook base 51 through a latch hook rotation shaft 53. The lock hook 5 is provided with a through hole perpendicular to the direction of the lock hook rotating shaft so as to allow the lock hook limiting device 52 to pass through. Specifically, one end of the lock hook limiting device 52 is disposed on the lock hook base 51, and the other end passes through the through hole of the lock hook 5. The lock hook limiting device 52 fixes the lock hook 5 after passing through the through hole of the lock hook 5, and is used for limiting the rotation of the lock hook 5 along the lock hook rotating shaft 53.

It should be noted that, after the lock hook limiting device 52 passes through the through hole of the lock hook 5, a small rotation can be performed, so as to adapt to the gradient change of the lock groove 23 before being buckled with the lock groove 23, so as to avoid the lock hook 5 from being blocked by the outer side of the lock groove. Specifically, a small space can be reserved between the latch hook limiting device 52 and the through hole, so that small-amplitude rotation of the latch hook 5 can be satisfied.

Referring to fig. 3, further, the latch hook limiting device includes a guide screw 521, a nut 522, a latch hook spring 523, and a spring washer 524 disposed perpendicular to the latch hook rotation shaft 53. One end of the guide screw 521 is disposed on the lock hook base, and the other end sequentially passes through the lock hook spring 523, the spring washer 524, and the through hole of the lock hook 5, and the nut 522 screws the guide screw 521 from the other end of the guide screw 521 to limit the rotation of the lock hook 5 along the lock hook rotation shaft 53.

By adjusting the length of the spring, the rigidity of the spring or the thickness of the gasket, the contact angle between the lock hook 5 and the lock groove can be adjusted, and further the lock hook 5 can be ensured to be smoothly buckled in the lock groove.

Referring to fig. 2, in one embodiment, the female hinge 3 is provided with a tightening screw 7 for adjusting the deployment flatness of the male and female hinges at a position near the lock groove 23, and the male hinge is provided with a stopper rod 8 for abutting against the tightening screw 7 at a position near the lock hook base 51. When the hinge mechanism is unfolded, the jacking screw 7 is in contact with the limiting rod 8 in a propping mode to play a reverse limiting role, namely, the limiting role is opposite to that played after the locking of the locking hook and the locking groove. Therefore, after the lock hook 5 is buckled and held tightly with the lock groove 23, the limit rod 8 is also in abutting contact with the jacking screw 7, so that the whole hinge mechanism can complete self-locking, and the male hinge and the female hinge can be limited to continue relative movement.

It should be noted that, the latch hook and the latch groove are used for limiting the separation action of the second extension plate and the fourth extension plate after completing self-locking, and the abutting contact of the limiting rod and the jacking screw is used for limiting the excessive expansion of the second extension plate and the fourth extension plate. The space hinge mechanism provided by the embodiment of the invention can realize self-locking after the male hinge and the female hinge are unfolded, and can prevent the male hinge and the female hinge from being excessively unfolded.

Referring to fig. 2, 4 and 6 together, in one embodiment, to facilitate the connection of the constant force spring 4 to the male hinge 2, a constant force spring connection unit 9 may be provided at a position of the male hinge 2 near the stopper rod 8. One end of the constant force spring connecting unit 9 is fixedly arranged on the male hinge 2, and the other end of the constant force spring connecting unit is used for being connected with the constant force spring 4, so that the constant force spring 4 is connected with the male hinge 2 through the constant force spring connecting unit 9.

Specifically, the constant force spring coupling unit includes a support rod 91, a lock nut 92, and a rotation shaft sleeve 93. One end of the supporting rod 91 is provided with a nut structure, and the other end of the supporting rod passes through the rotating shaft sleeve 93 and the locking nut 92 in sequence and then is fixedly arranged in the supporting rod hole 25 of the male hinge. The lock nut 92 is used for locking the other end of the support rod 91 to the support rod hole 25 of the male hinge. The rotating shaft sleeve 93 is rotatably sleeved on the supporting rod 91 and is used for being connected with the second end of the constant force spring 4, so that the constant force spring 4 is rotatably connected with the supporting rod 91.

That is, when the male hinge rotates relative to the female hinge and the main shaft, the support rod moves synchronously with the male hinge, and the movement path of the support rod moves along the outer circumference of the main shaft. In order to prevent the extreme curling of the end (second end) of the constant force spring to which the support rod is connected during the movement of the support rod, the constant force spring may be connected to the support rod using a swivel sleeve. Through setting up the pivot cover, can guarantee at the in-process that the bracing piece removed, constant force spring can rotate and be stretched around the bracing piece through the pivot cover.

With continued reference to fig. 4, in any of the above embodiments, in order to facilitate the installation and removal of the constant force spring from the spindle, a spring connection hole 11 may be provided in the outer wall of the spindle 1 at the location where the constant force spring is installed, for fixedly connecting the first end of the constant force spring. Accordingly, the first end of the constant force spring is provided with a through hole 41 matching the spring connection hole 11. In the space hinge mechanism of the present invention, the spring connection hole 11 and the through hole 41 can be fixedly connected by the fixing bolt, so that the first end of the constant force spring is fixedly arranged on the main shaft 1.

Referring to fig. 5, in one embodiment, the side of the female hinge remote from the third extension plate 31 and the fourth extension plate 32 is provided with a first spindle hole 33 and a second spindle hole 34. The female hinge is connected to the spindle simultaneously through the first spindle hole 33 and the second spindle hole 34. At least one of the first spindle hole 33 and the second spindle hole 34 is an irregular hole, and the spindle is provided with a shoulder on the outer peripheral surface of the position corresponding to the irregular hole. The irregular holes are matched with the shaft shoulders, so that the relative movement of the main shaft and the main shaft can be limited, and the main shaft can synchronously rotate.

Referring to fig. 5 and 6 together, in the above embodiment, the side of the male hinge away from the first extension plate 21 and the second extension plate 22 is provided with a third spindle hole 24. The male hinge is connected to the spindle via a third spindle hole 24. Specifically, one end of the spindle is used for installing a constant force spring, and the other end is sequentially arranged through the third spindle hole 24 and the first spindle hole 33 of the second spindle hole 34. For stability of the entire hinge mechanism, the third spindle hole 24 is provided between the first spindle hole 33 and the second spindle hole 34.

Referring to fig. 2 and 5 at the same time, further, in order to increase the deployment reliability and stability of the whole hinge mechanism, two jack screws 7 may be provided at the same time. Specifically, in one embodiment, the outer wall of the first spindle hole 33 near the side of the third extension plate 31 is provided with a first tightening screw hole 35, and a first tightening screw for adjusting the unfolding planeness of the male hinge and the female hinge is provided in the first tightening screw hole 35. The outer wall of the second main shaft hole, which is close to one side of the third extension plate 31, is provided with a second jacking screw hole 36, and a second jacking screw used for adjusting the unfolding planeness of the male hinge and the female hinge is arranged in the second jacking screw hole 36.

Further, the third extension plate 31 is provided with a latch hook seat hole 37 at a position close to the first tightening screw hole 35 and a position close to the second tightening screw hole 36, and the latch hook base 51 is fixedly connected with the female hinge through the latch hook seat hole 37.

The third extension plate 31 is further provided with a positioning hole 311 for mounting the deployable mechanism. The base plate of the deployable mechanism may be coupled to the female hinge via a positioning hole 311.

Referring to fig. 6, a stopper rod 9 for simultaneously abutting against the first and second knock screw may be provided at a position of the male hinge near the locking groove 23. The limiting rod 9 is fixedly arranged on the male hinge, and two ends of the limiting rod extend out respectively. The two ends of the male hinge are arranged in an extending mode and are used for being abutted with the first jacking screw and the second jacking screw when the hinge mechanism is unfolded, and limiting positions of the male hinge and the female hinge when the male hinge and the female hinge are unfolded mutually.

In order to ensure the locking reliability, the heights of the first and second tightening screws are adjustable. By adjusting the first and second jack screws, the flatness of the hinge mechanism after deployment can be improved.

Further, the first extension plate 21 is also provided with a positioning hole 211 for mounting the deployable mechanism. The base plate of the deployable mechanism may be coupled to the male hinge via a locating hole 211.

In the above embodiment, in order to facilitate the latch hook to smoothly lock with the latch groove, the opposite surface of the latch groove for the latch hook locking portion may be set to be an arc surface, so that the latch hook can smoothly slide into the latch groove, and redundant resistance is reduced.

The above embodiments can be combined with each other with corresponding technical effects.

According to the space hinge mechanism provided by the embodiment of the invention, in a complex and changeable space environment, the hinge unfolding process is stable and autonomous, reliable self-locking after unfolding can be realized through buckling of the lock hook and the lock groove, and the problems that the traditional hinge locking operation is too complex and has great difficulty are solved. The hinge mechanism adopts the constant force spring, so that the moment margin is ensured, and meanwhile, excessive impact is avoided when the hinge mechanism is unfolded in place, the hinge structure is more compact, and the layout of the hinge mechanism is optimized.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. The space hinge mechanism is used for driving the unfolding action of the unfolding mechanism and is characterized by comprising a main shaft, a male hinge, a female hinge, a constant force spring and a lock hook;

one side of the male hinge is fixedly connected with the main shaft through a self-aligning roller bearing, and a first extension plate and a second extension plate are arranged on the other side of the male hinge; one side of the female hinge is rotatably connected with the main shaft, and a third extension plate and a fourth extension plate are arranged on the other side of the female hinge;

the first extension plate and the third extension plate are used for keeping a pressed state after being subjected to external force, and the second extension plate and the fourth extension plate are used for installing an expandable mechanism;

the first end of the constant force spring is fixedly arranged on the main shaft, and the second end of the constant force spring is connected with the male hinge;

one end of the lock hook is arranged on the female hinge, and the other end of the lock hook is used as a buckling end for buckling with the male hinge; the male hinge is provided with a locking groove for the locking hook to be buckled at a position close to the second extension plate;

under the compression action of external force, the female hinge and the main shaft can rotate relative to the male hinge at the same time, and the first extension plate and the third extension plate keep compression; when the external force fails, the constant force spring provides torsion force, and the male hinge can rotate around the main shaft through the self-aligning roller bearing, so that the second extension plate and the fourth extension plate move relatively, and the lock hook slides into the lock groove to complete self-locking.

2. The space hinge mechanism of claim 1, further comprising a shackle base and a shackle stop;

the female hinge is provided with a lock hook base on one surface of the fourth extension plate adjacent to the second extension plate, the lock hook base is provided with a mounting hole in a direction parallel to the main shaft, and the lock hook is rotatably connected with the mounting hole of the lock hook base through a lock hook rotating shaft;

a through hole perpendicular to the direction of the rotating shaft of the lock hook is formed in the position, close to the rotating shaft of the lock hook, of the lock hook; one end of the lock hook limiting device is arranged on the lock hook base, and the other end of the lock hook limiting device penetrates through the through hole and is used for limiting the lock hook to rotate along the lock hook rotating shaft.

3. The space hinge mechanism according to claim 2, wherein the lock hook limiting device comprises a guide screw, a nut, a lock hook spring and a spring washer which are arranged perpendicular to the rotation axis direction of the lock hook;

one end of the guide screw is arranged on the lock hook base, the other end of the guide screw sequentially penetrates through the lock hook spring, the spring gasket and the penetrating hole of the lock hook, and the nut is screwed on the guide screw from the other end of the guide screw so as to limit the lock hook to rotate along the lock hook rotating shaft.

4. The space hinge mechanism according to claim 3, wherein the female hinge is provided with a tightening screw for adjusting the unfolding planeness of the male hinge and the female hinge at a position close to the lock hook base, and the male hinge is provided with a limit rod abutted with the tightening screw at a position close to the lock groove;

after the lock hook is buckled with the lock groove and is tightly held, the limiting rod is in abutting contact with the jacking screw, so that the male hinge and the female hinge are limited to continuously move relatively.

5. The space hinge mechanism of claim 4, wherein the male hinge is provided with a constant force spring connection unit at a position near the limit lever; the constant force spring is connected with the male hinge through the constant force spring connecting unit.

6. The space hinge mechanism of claim 5, wherein the constant force spring connection unit comprises a support rod, a lock nut, and a swivel sleeve;

one end of the supporting rod is of a nut structure, and the other end of the supporting rod sequentially penetrates through the rotating shaft sleeve and the locking nut and then is fixedly arranged in a supporting rod hole of the male hinge; the locking nut is used for locking the supporting rod in the supporting rod hole;

the rotating shaft sleeve is rotatably sleeved on the supporting rod, and the second end of the constant force spring is rotatably connected with the supporting rod through the rotating shaft sleeve.

7. The space hinge mechanism according to any one of claims 1 to 6, wherein the spindle is provided with a spring connection hole, the constant force spring first end is provided with a through hole, and the spring connection hole and the through hole are fixedly connected by a fixing bolt to fixedly arrange the constant force spring first end to the spindle.

8. The space hinge mechanism of claim 7, wherein a side of the female hinge remote from the third extension plate and the fourth extension plate is provided with a first spindle hole and a second spindle hole; the female hinge is connected with the main shaft through the first main shaft hole and the second main shaft hole;

at least one of the first main shaft hole and the second main shaft hole is an irregular hole, and a shaft shoulder is arranged at a position of the main shaft corresponding to the irregular hole; the irregular holes are matched with the shaft shoulders, so that the main shaft and the female hinge synchronously rotate.

9. The space hinge mechanism according to claim 8, wherein the outer wall of the first spindle hole near one side of the third extension plate is provided with a first tightening screw hole, and a first tightening screw for adjusting the unfolding planeness of the male hinge and the female hinge is arranged in the first tightening screw hole;

a second tightening screw hole is formed in the outer wall, close to one side of the third extension plate, of the second main shaft hole, and a second tightening screw used for adjusting the unfolding planeness of the male hinge and the female hinge is arranged in the second tightening screw hole;

and the male hinge is provided with a limiting rod which is used for simultaneously abutting against the first jacking screw and the second jacking screw at a position close to the locking groove.

10. The space hinge mechanism according to claim 7, wherein the locking groove is formed with an arc surface on a surface opposite to the locking hook fastening portion, so that the locking hook can slide into the locking groove smoothly.