CN112099152A - Optical cable connecting structure for human bionics signal monitoring conversion system - Google Patents
Optical cable connecting structure for human bionics signal monitoring conversion system Download PDFInfo
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- CN112099152A CN112099152A CN202011243455.8A CN202011243455A CN112099152A CN 112099152 A CN112099152 A CN 112099152A CN 202011243455 A CN202011243455 A CN 202011243455A CN 112099152 A CN112099152 A CN 112099152A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
Abstract
The invention relates to the field of optical cable connection, in particular to an optical cable connection structure for a human bionics signal monitoring and converting system, which comprises an optical terminal shell, a layer stranded optical cable, a connecting piece, a limiting piece, a clamping piece, a fastening nut, an outer sleeve A, a rubber tube, an outer sleeve B, a sealing ring A, a sealing ring B, an anti-disassembly piece A and an anti-disassembly piece B, wherein the connecting piece sequentially comprises an installation section, a fixed section, a threaded section and a frustum section from front to back; the invention ensures that the optical fiber in the layer stranded optical cable is not stressed and also meets the requirement of tensile resistance of the layer stranded optical cable by respectively clamping the reinforcing core, the fiber layer and the outer sheath of the layer stranded optical cable.
Description
Technical Field
The invention relates to the technical field of optical fiber transmission connection, in particular to an optical cable connection structure for a human bionics signal monitoring and converting system.
Background
The human bionics signal monitoring conversion system needs to convert an electric signal collected from a human body into an optical signal through the high-speed signal processing circuit and the electro-optical conversion circuit for high-speed transmission, so that the cable transmission mode between the original connecting device and a device communication network can be replaced, and the optical cable is used for completing the optical signal transmission between the interconnected devices based on the human bionics signal monitoring conversion system.
The connection between the existing layer-stranded optical cable and the optical transceiver is generally through a connector, and a common connection mode is that a socket is arranged on a shell of the optical transceiver, and a plug arranged on the layer-stranded optical cable is connected with the socket through a plug. The layer stranded optical cable comprises an optical fiber, a fiber layer for improving the tensile resistance of the optical cable, a reinforced core and an outer sheath, wherein the fiber layer of the layer stranded optical cable is fixed on the plug. The existing connection mode has the following disadvantages: 1. the socket is connected with the optical transceiver, and the plug is connected with the optical cable, so that the connecting process of the socket and the plug is complex, and the volume of the socket and the plug occupies large space; 2. the plug-in connection of the socket and the plug increases one-time switching loss; 3. the socket and the plug are detachable, so that the non-equipment maintenance personnel can conveniently detach the socket and the plug to cause equipment failure and influence signal transmission.
Disclosure of Invention
Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide an optical cable connection structure that is simple in connection process and can prevent non-equipment maintenance personnel from being detached at will. The invention achieves the above purpose through the following technical scheme.
Human bionics signal monitoring optical cable connection structure for switching system includes: the optical terminal comprises an optical terminal shell, a layer stranded optical cable, a connecting piece, a limiting piece, a clamping piece, a fastening nut, an outer sleeve A, a rubber tube, an outer sleeve B, a sealing ring A, a sealing ring B, an anti-disassembly piece A and an anti-disassembly piece B.
The connecting piece is sequentially provided with an installation section, a fixed section, a thread section and a frustum section from front to back, the section of the installation section of the connecting piece is square, the sections of the fixed section, the thread section and the frustum section of the connecting piece are circular, the side length of the section of the installation section of the connecting piece is greater than the diameter length of the section of the fixed section of the connecting piece, the diameter length of the section of the fixed section of the connecting piece is greater than the diameter length of the section of the thread section of the connecting piece, the maximum diameter length of the section of the frustum section of the connecting piece is less than the diameter length of the section of the thread section of the connecting piece, screw holes are arranged at four corners of the installation section of the connecting piece, the installation section of the connecting piece is fixed on the shell 1 of the optical transmitter and receiver through screws, two sealing rings are arranged, the front section diameter of the perforation is larger than the rear section diameter of the perforation.
The wire threading pipe is characterized in that the axis of the limiting part is a wire threading pipe, the front section of the wire threading pipe is a sleeving section, threads are arranged on the periphery side of the middle section of the wire threading pipe, three supports extend outwards from the tail section of the wire threading pipe, the tail ends of the supports are provided with annular bodies, the limiting part is arranged in the front section of the through hole, and the wire threading pipe is coaxial with the through hole.
The clamping piece is wholly tubular, the front end of the clamping piece is provided with three clamping jaws, the tail section of the clamping piece is sleeved on the sleeved section of the front section of the threading pipe, and the clamping piece is coaxial with the threading pipe.
The clamp is characterized in that the clamp nut is sleeved on the clamping piece and the threading pipe, the clamp nut is fixed through threads on the threading pipe, and the clamping jaw at the front end of the clamping piece can be contracted towards the axis direction of the clamp nut when the clamp nut is screwed.
The outer sleeve A is characterized in that an annular groove is formed in the outer periphery of the front section of the outer sleeve A, threads are formed in the outer periphery of the tail section of the outer sleeve A, threads are formed in the side wall of the front section of the inner cavity of the outer sleeve A, a frustum-shaped cavity is formed in the middle section of the inner cavity of the outer sleeve A, a plurality of annular protrusions are arranged on the side wall of the inner cavity of the middle section of the outer sleeve A, the outer sleeve A is sleeved on the thread section.
The rubber tube is a tubular rubber tube, an annular bulge is arranged on the outer peripheral side of the front section of the rubber tube, the rubber tube is arranged behind the outer sleeve A, and the front end face of the rubber tube is tightly attached to the rear end face of the outer sleeve A.
The inner cavity of the outer sleeve B is divided into three sections, the diameters of the sections of the three sections are sequentially reduced from front to back, the inner cavity of the front section of the outer sleeve B is a threaded inner cavity, the inner cavity of the middle section of the outer sleeve B is an arc-shaped surface inner cavity, and the outer sleeve B is sleeved on the rubber tube and is fixedly connected with the threaded part of the tail section of the outer sleeve A through the threaded inner cavity.
The sealing ring A is arranged between the rear part of the connecting piece fixing section and the front end face of the outer sleeve A, and the sealing ring B is arranged between the tail section of the outer sleeve A and the front end face of the outer sleeve B.
Prevent that dismantlement piece A is the semiannular form, and the annular portion both ends of dismantlement piece A all are provided with the cotter hole, are provided with the semiannular sand grip that twice is parallel to each other on the annular inner wall of dismantlement piece A and are close to the semiannular sand grip top of the preceding terminal surface of dismantlement piece A and are provided with the breach, and two ears about the terminal surface upwards extends before the dismantlement piece A, prevent that dismantlement piece B is the semiannular form, and the annular portion both ends of dismantlement piece B all are provided with the cotter hole, are provided with the semiannular sand grip that twice is parallel to each other on the annular inner wall of dismantlement piece B and are close to the semiannular sand grip bottom of the preceding terminal surface of dismantlement piece B and are provided with the breach, prevent that dismantlement piece B anterior segment.
The invention has the beneficial effects that:
the optical cable connecting structure can integrate the optical terminal shell, the connecting piece, the outer sleeve A, the outer sleeve B and the limiting piece, and ensures that optical fibers in the layer stranded optical cable are not stressed and also meets the requirement of tensile resistance of the layer stranded optical cable by respectively clamping the layer stranded optical cable reinforcing core, the fiber layer and the outer sheath;
the anti-disassembly piece A and the anti-disassembly piece B can shield screw holes at four corners of the connecting piece, and simultaneously fix the connecting piece and the outer sleeve A to achieve the anti-disassembly function.
Drawings
Fig. 1 is a schematic diagram of the connection between the optical cable connection structure and the optical transceiver.
Fig. 2 is a front view of the connector.
Fig. 3 is a rear view of the connector.
Fig. 4 is a front view of the stop.
Fig. 5 is a front view of the clamp.
Fig. 6 is a front view of outer sleeve a.
Fig. 7 is a cross-sectional view of the outer sleeve a.
Fig. 8 is a cross-sectional view of the outer sleeve B.
Fig. 9 is a bottom view of the detachment prevention member a.
Fig. 10 is a top view of the detachment prevention member B.
Fig. 11 is a sectional view of a cable connection structure.
Fig. 12 is an exploded view of a cable connection structure.
Description of reference numerals:
1. an optical terminal housing; 2. a layer stranded optical cable; 100. a connecting member; 101. a "C" shaped groove; 102. perforating; 200. a limiting member; 201. a threading tube; 210. a clamping member; 220. fastening a nut; 300. an outer sleeve A; 301. an annular groove; 302. an annular projection; 310. a rubber tube; 320. an outer sleeve B; 400. a sealing ring A; 410. a seal ring B; 500. an anti-disassembly member A; 510. and a detachment prevention member B.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those embodiments can be easily implemented by those having ordinary skill in the art to which the present invention pertains. However, the present invention may be embodied in many different forms and is not limited to the embodiments described below. In addition, in order to more clearly describe the present invention, components not connected to the present invention will be omitted from the drawings.
As shown in fig. 1 to 12, the optical cable connection structure for a human bionics signal monitoring conversion system includes: the optical terminal comprises an optical terminal housing 1, a layer stranded optical cable 2, a connecting piece 100, a limiting piece 200, a clamping piece 210, a fastening nut 220, an outer sleeve A300, a rubber tube 310, an outer sleeve B320, a sealing ring A400, a sealing ring B410, an anti-disassembly piece A500 and an anti-disassembly piece B510.
As shown in fig. 1 to 3, the connecting member 100 is sequentially provided with an installation section, a fixed section, a thread section and a frustum section from front to back, the cross section of the installation section of the connecting member 100 is square, the cross sections of the fixed section, the thread section and the frustum section of the connecting member 100 are circular, the length of the cross section side of the installation section of the connecting member 100 is greater than the length of the cross section diameter of the fixed section of the connecting member 100, the length of the cross section diameter of the fixed section of the connecting member 100 is greater than the length of the cross section diameter of the thread section of the connecting member 100, the maximum length of the cross section diameter of the frustum section of the connecting member 100 is less than the length of the cross section diameter of the thread section of the connecting member 100, screw holes are arranged at four corners of the installation section of the connecting member 100, the installation section of the connecting member 100 is fixed on the optical, the connecting member 100 is provided with through holes 102 penetrating front and rear end surfaces thereof, and a front section diameter of the through hole 102 is larger than a rear section diameter of the through hole 102.
As shown in fig. 3, 4, 11, and 12, the axis of the limiting member 200 is a threading pipe 201, the front section of the threading pipe 201 is a sleeved section, threads are disposed on the outer periphery of the middle section of the threading pipe 201, three brackets extend from the tail section of the threading pipe 201 to the outer periphery, the tail end of the bracket is provided with an annular body, the limiting member 200 is disposed in the front section of the through hole 102, and the threading pipe 201 is coaxial with the through hole 102.
As shown in fig. 5, 11 and 12, the clamping member 210 is tubular, three clamping jaws are arranged at the front end of the clamping member 210, the tail section of the clamping member 210 is sleeved on the sleeved section of the front section of the threading tube 201, and the clamping member 210 is coaxial with the threading tube 201.
As shown in fig. 11 and 12, the clamp nut 220 is fitted around the holder 210 and the threading pipe 201, the clamp nut 220 is fixed by a thread on the threading pipe 201, and when the clamp nut 220 is tightened, the jaw at the tip of the holder 210 can be contracted in the axial direction thereof.
As shown in fig. 6, 7, 11, and 12, an annular groove 301 is disposed on an outer peripheral side of a front section of the outer sleeve a300, a thread is disposed on an outer peripheral side of a rear section of the outer sleeve a300, a thread is disposed on a side wall of a front section of an inner cavity of the outer sleeve a300, a middle section of the inner cavity of the outer sleeve a300 is a frustum-shaped cavity, a plurality of annular protrusions 302 are disposed on a side wall of a middle section of the inner cavity of the outer sleeve a300, the outer sleeve a300 is sleeved on a thread section of the connecting member 100, and the.
As shown in fig. 11 and 12, the rubber tube 310 is a tubular rubber tube, an annular projection is provided on the outer peripheral side of the front section of the rubber tube 310, the rubber tube 310 is provided behind the outer tube a300, and the front end face of the rubber tube 310 is in close contact with the rear end face of the outer tube a 300.
As shown in fig. 8, 11 and 12, the inner cavity of the outer sleeve B320 is divided into three sections, the diameters of the sections of the three sections are sequentially reduced from front to back, the inner cavity of the front section of the outer sleeve B320 is a threaded inner cavity, the middle section of the outer sleeve B320 is an arc-shaped inner cavity, and the outer sleeve B320 is sleeved on the rubber tube 310 and is fixedly connected with the threaded part of the tail section of the outer sleeve a300 through the threaded inner cavity.
As shown in fig. 11 and 12, the sealing ring a400 is disposed between the rear of the fixed segment of the connector 100 and the front end surface of the outer sleeve a 300.
As shown in fig. 1, 11 and 12, the sealing ring B410 is disposed between the tail section of the outer sleeve a300 and the front end face of the outer sleeve B320.
As shown in fig. 1, 9, 11, and 12, the detachment prevention member a500 is in a semi-ring shape, pin holes are provided at both ends of the ring-shaped portion of the detachment prevention member a500, two semi-ring-shaped protruding strips parallel to each other are provided on the ring-shaped inner wall of the detachment prevention member a500, a notch is provided at the top of the semi-ring-shaped protruding strip near the front end face of the detachment prevention member a500, and the front end face of the detachment prevention member a500 extends upwards to form a left ear and a right ear.
The disassembly-preventing part A500 and the disassembly-preventing part B510 are respectively clamped above and below the joint of the connecting piece 100 and the outer sleeve A300, two semicircular convex strips arranged on the annular inner wall of the disassembly-preventing part A500 are respectively clamped with the upper half part of a C-shaped groove 101 arranged on the connecting piece 100 and the upper half part of an annular groove 301 arranged on the outer sleeve A300, two semicircular convex strips arranged on the annular inner wall of the disassembly-preventing part B are respectively clamped with the lower half part of a C-shaped groove 101 arranged on the connecting piece 100 and the lower half part of an annular groove 301 arranged on the outer sleeve A300, a notch arranged at the top part of the semicircular convex strip close to the front end surface of the disassembly-preventing part A500 is clamped with the C-shaped groove 101, the disassembly-preventing part A500 can be prevented from sliding at the outer wall of the connecting piece 100, and pin holes arranged on the disassembly-preventing part A500 and the disassembly-preventing part B510 are connected through pins, so that the disassembly-preventing part A500 is connected and the disassembly-, and because the anti-disassembly piece A500 and the anti-disassembly piece B510 are both provided with the ear parts, after the anti-disassembly piece A500 is connected with the anti-disassembly piece B510, the four ear parts on the anti-disassembly piece A500 and the anti-disassembly piece B510 can shield the screw holes arranged at four corners of the mounting section on the connecting piece 100, and meanwhile, the connecting piece 100 and the outer sleeve A300 are fixed to prevent random disassembly.
The working principle of the invention is as follows:
when in wiring, the outer sleeve B320, the rubber tube 310, the sealing ring B410 and the outer sleeve A300 are sequentially inserted from the rear end and sleeved on the connecting end of the layer-stranded optical cable 2, part of the outer sheath and the fiber layer are stripped from the connecting end of the layer-stranded optical cable 2, a certain length of optical fiber and a reinforcing core are exposed, the layer-stranded optical cable 2 is inserted into the through hole 102 from the rear end of the connecting piece 100, the fiber layer and the outer sheath of the layer-stranded optical cable 2 are expanded by the frustum section of the tail section of the connecting piece 100 and are attached to the outer peripheral wall of the frustum section of the connecting piece 100, the reinforcing core of the layer-stranded optical cable 2 passes through the threading tube 201 and the clamping piece 210, at this time, the fastening nut 220 is rotated, the clamping jaw at the front end of the clamping piece 210 contracts towards the axial direction and clamps the reinforcing core of the layer-stranded optical cable 2, the sealing ring A400 is sleeved on the thread section of, the plurality of annular protrusions 302 arranged on the side wall of the middle section inner cavity of the outer sleeve A300 tightly press the fiber layer of the layer stranded optical cable 2 attached to the peripheral wall of the frustum section of the connector 100 and the outer sleeve in the screwing process of the outer sleeve A300, the optical fiber in the layer stranded optical cable 2 passes through the front end of the through hole 102 through the gap between the annular body arranged on the limiting piece 200 and the threading pipe 201, the rubber tube 310 is moved to the tail end of the outer sleeve A300, the sealing ring B410 is moved to the tail section of the outer sleeve A300, the outer sleeve B320 is sleeved on the rubber tube 310 and is connected with the tail section of the outer sleeve A300 through the thread inner cavity of the outer sleeve, the middle section arc surface inner cavity of the outer sleeve B320 extrudes the annular protrusion arranged on the peripheral side of the front section of the rubber tube 310 to enable the front section of the rubber tube 310 to shrink and clamp the outer sleeve of the layer stranded optical cable 2 to form a sealing state, meanwhile, the tail section of, therefore, the optical transceiver shell 1, the connecting piece 100, the outer sleeve A300, the outer sleeve B320 and the limiting piece 200 form a whole, the optical fiber inside the layer-stranded optical cable 2 is guaranteed not to be stressed by respectively clamping the reinforcing core, the fiber layer and the outer sheath of the layer-stranded optical cable 2, and the tensile resistance requirement of the layer-stranded optical cable 2 is met, then, the front end of the optical fiber inside the layer-stranded optical cable 2 can be connected with a unit inside the optical transceiver through an optical fiber cold joint, the anti-disassembling piece A500 and the anti-disassembling piece B510 are respectively clamped above and below the joint of the connecting piece 100 and the outer sleeve A300, the anti-disassembling piece A500 and the anti-disassembling piece B510 are fixedly connected through pins, four lugs on the anti-disassembling piece A500 and the anti-disassembling piece B510 can shield screw holes at four corners of the mounting section on the connecting piece 100, and the connecting piece 100 and the outer sleeve A300 are fixed at the same time, and the anti-disassembling function.
Claims (5)
1. Human bionics signal monitoring optical cable connection structure for switching system includes: the optical terminal comprises an optical terminal shell (1), a layer stranded optical cable (2), a connecting piece (100), a limiting piece (200), a clamping piece (210), a fastening nut (220), an outer sleeve A (300), a rubber tube (310), an outer sleeve B (320), a sealing ring A (400), a sealing ring B (410), an anti-disassembly piece A (500) and an anti-disassembly piece B (510); the method is characterized in that: the connecting piece (100) is sequentially provided with an installation section, a fixed section, a thread section and a frustum section from front to back, the section of the installation section of the connecting piece (100) is square, the sections of the fixed section, the thread section and the frustum section of the connecting piece (100) are circular, screw holes are arranged at four corners of the installation section of the connecting piece (100), the installation section of the connecting piece (100) is fixed on the casing (1) of the optical terminal through screws, two sealing rings are arranged on the front end surface of the connecting piece (100), a C-shaped groove (101) is arranged on the peripheral side wall of the fixed section of the connecting piece (100), a through hole (102) penetrating through the front end surface and the rear end surface of the connecting piece (100) is arranged on the connecting piece (100), the section diameter of the front section of the through hole (102) is larger than that of the rear section of the through hole (102), the axis of the limiting piece (, three supports extend from the tail section of the threading pipe (201) to the peripheral side, the tail end of each support is provided with an annular body, the limiting piece (200) is arranged in the front section of the perforation (102), the threading pipe (201) is coaxial with the perforation (102), the clamping piece (210) is integrally tubular, the front end of the clamping piece (210) is provided with three clamping jaws, the tail section of the clamping piece (210) is sleeved on the sleeved section of the front section of the threading pipe (201), the clamping piece (210) is coaxial with the threading pipe (201), the fastening nut (220) is sleeved on the clamping piece (210) and the threading pipe (201), the fastening nut (220) is fixed through threads on the threading pipe (201), the peripheral side of the front section of the outer sleeve A (300) is provided with an annular groove (301), the peripheral side of the tail section of the outer sleeve A (300) is provided with threads, the side wall of the front section of the inner cavity of the outer sleeve A, the side wall of the inner cavity of the middle section of the outer sleeve A (300) is provided with a plurality of annular bulges (302), the outer sleeve A (300) is sleeved on the thread section of the connecting piece (100), the outer sleeve A (300) is fixedly connected with the thread section of the connecting piece (100) through the thread of the front section of the inner cavity of the outer sleeve A, the inner cavity of the outer sleeve B (320) is divided into three sections, the section diameter of the outer sleeve is sequentially reduced from front to back, the inner cavity of the front section of the outer sleeve B (320) is a thread inner cavity, the middle section of the outer sleeve B (320) is an arc-shaped surface inner cavity, the outer sleeve B (320) is sleeved on the rubber tube (310) and is fixedly connected with the thread of the tail section of the outer sleeve A (300) through the thread inner cavity of the outer sleeve B, the anti-disassembly piece A (500) is in a semi-annular shape, two ends of the annular part of the anti-disassembly piece A, the front end face of the anti-disassembly piece A (500) extends upwards to form a left ear part and a right ear part, and the anti-disassembly piece A (500) and the anti-disassembly piece B (510) are identical in structure and are symmetrically arranged.
2. The optical cable connection structure for a human bionics signal monitoring conversion system of claim 1, characterized in that: the length of the side of the section of the installation section of the connecting piece (100) is greater than the length of the section diameter of the fixed section of the connecting piece (100), the length of the section diameter of the fixed section of the connecting piece (100) is greater than the length of the section diameter of the thread section of the connecting piece (100), and the length of the maximum section diameter of the frustum section of the connecting piece (100) is less than the length of the section diameter of the thread section of the.
3. The optical cable connection structure for a human bionics signal monitoring conversion system of claim 1, characterized in that: the sealing ring A (400) is arranged between the rear part of the fixed section of the connecting piece (100) and the front end surface of the outer sleeve A (300), and the sealing ring B (410) is arranged between the tail section of the outer sleeve A (300) and the front end surface of the outer sleeve B (320).
4. The optical cable connection structure for a human bionics signal monitoring conversion system of claim 1, characterized in that: the rubber tube (310) is a tubular rubber tube, an annular bulge is arranged on the outer peripheral side of the front section of the rubber tube (310), the rubber tube (310) is arranged behind the outer sleeve A (300), and the front end face of the rubber tube (310) is tightly attached to the rear end face of the outer sleeve A (300).
5. The optical cable connection structure for a human bionics signal monitoring conversion system of claim 1, characterized in that: the anti-disassembly part A (500) and the anti-disassembly part B (510) are respectively clamped above and below the joint of the connecting piece (100) and the outer sleeve A (300), two semicircular convex strips are arranged on the annular inner walls of the anti-disassembly part A (500) and the anti-disassembly part B (510), and the two semicircular convex strips are respectively clamped on the upper half part of the C-shaped groove (101) and the upper half part of the annular groove (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011243455.8A CN112099152B (en) | 2020-11-10 | 2020-11-10 | Optical cable connecting structure for human bionics signal monitoring conversion system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011243455.8A CN112099152B (en) | 2020-11-10 | 2020-11-10 | Optical cable connecting structure for human bionics signal monitoring conversion system |
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| CN112099152A true CN112099152A (en) | 2020-12-18 |
| CN112099152B CN112099152B (en) | 2021-07-30 |
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| CN202011243455.8A Active CN112099152B (en) | 2020-11-10 | 2020-11-10 | Optical cable connecting structure for human bionics signal monitoring conversion system |
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| CN112835147A (en) * | 2020-12-30 | 2021-05-25 | 深圳市国信达科技股份有限公司 | Communication connector with shield attached to connector body |
| CN112882160A (en) * | 2021-01-19 | 2021-06-01 | 苏州长光华芯光电技术股份有限公司 | Reusable fixing structure |
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| Publication number | Publication date |
|---|---|
| CN112099152B (en) | 2021-07-30 |
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