A flexible circuit board that is easy to assemble

Abstract

The application discloses a flexible circuit board convenient to assemble, and relates to the technical field of flexible circuit boards, which comprises a flexible plate one and a fracture-proof assembly, a flexible plate two is arranged on the right side of the flexible plate one, spring wires are connected between the flexible plate one and the flexible plate two, connecting plates are fixedly connected to the sides, away from the spring wires, of the flexible plate one and the flexible plate two, the fracture-proof assembly is symmetrically arranged on the upper and lower sides of the connecting plates, sealing plates are fixedly connected to the other sides of the connecting plates, connectors are fixedly connected to the centers of the connecting plates, plug-in plates are fixedly connected to the other sides of the sealing plates, plug holes are formed in the surfaces of the plug-in plates, connecting buckles are arranged on the sides, away from the flexible plate one and the flexible plate two, of the connecting plates, fixing assemblies are symmetrically arranged on the upper and lower sides of the connecting buckles, connecting grooves are formed in one side of the connecting buckles, plug-in grooves are symmetrically formed in the upper and lower sides of the connecting grooves, connecting ports are formed in the centers of the connecting grooves, and hard plates are fixedly connected to the other sides of the connecting buckles. The application can distinguish the positive and negative poles during installation, avoids the installation of the poles in reverse, and can also avoid the fracture of the flexible circuit board caused by excessive force during disassembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flexible circuit board, in particular to a flexible circuit board convenient to assemble. BACKGROUND

[0002] The flexible circuit board is the support of electronic components and the carrier of electrical connection of electronic components, which is divided into rigid circuit board, FPCB flexible circuit board and rigid-flexible circuit board. The intuitive difference between rigid circuit board and FPCB flexible circuit board is that FPCB flexible circuit board can be bent.

[0003] At present, the flexible circuit board on the market is mostly stacked during assembly, which may be broken due to excessive force during disassembly, and it is not easy to distinguish the positive and negative poles during installation, which may cause the positive and negative poles to be installed reversely.

[0004] Therefore, in view of the above problems, the present application provides a flexible circuit board convenient to assemble. SUMMARY

[0005] The present application aims to provide a flexible circuit board convenient to assemble to solve the problems in the background art.

[0006] To achieve the above object, the present application provides the following technical scheme: a flexible circuit board convenient to assemble, comprising a flexible board one and a breakage prevention assembly, the right side of the flexible board one is provided with a flexible board two, and a spring wire is connected between the flexible board one and the flexible board two, the side away from the spring wire of the flexible board one and the flexible board two is fixedly connected with a connecting plate, the breakage prevention assembly is symmetrically arranged on the upper and lower sides of the connecting plate, the other side of the connecting plate is fixedly connected with an enclosing plate, and a connector is fixedly connected in the center of the connecting plate, the other side of the enclosing plate is fixedly connected with an inserting plate at both ends, a plug hole is formed in the surface of the inserting plate, the side away from the flexible board one and the flexible board two of the connecting plate is provided with a connecting buckle, and a fixing assembly is symmetrically arranged on the upper and lower sides of the connecting buckle, a connecting groove is formed in one side of the connecting buckle, and a plug groove is symmetrically formed in the upper and lower sides of the connecting groove, a connecting port is formed in the center of the connecting groove, and a hard plate is fixedly connected to the other side of the connecting buckle.

[0007] Further, the connector penetrates the enclosing plate, the connecting plate and the flexible board one and the flexible board two for electrical connection, and the connector is embeddedly connected with the connecting buckle through the connecting port, the connector is electrically connected with the hard plate through the connecting port, the connecting plate is clampedly connected with the connecting buckle through the plug groove, and the inserting plate is clampedly connected with the connecting buckle through the plug groove.

[0008] Further, the connecting plate is provided with a rotating groove on the upper and lower sides, and the rotating groove is fixedly connected with an embedded block on the front and back sides, a rotating plate is rotatably connected in the rotating groove, and the front and back sides of the rotating plate are symmetrically provided with an embedded groove, a top rod is slidably connected in the rotating groove, the embedded block is made of elastic plastic, and the embedded block is connected with the rotating plate through the embedded groove.

[0009] Further, the anti-breaking assembly comprises a winding cavity, a shaft rod and a torsional spring, the upper and lower sides of the connecting plate are symmetrically provided with the winding cavity, and the winding cavity is rotatably connected with the shaft rod, and the shaft rod is fixedly connected with the torsional spring between the connecting plate.

[0010] Further, one end of the top rod is located in the winding cavity, and the other end of the top rod is located in the rotating groove, the top rod is attached to the torsional spring, and the top rod is slidably connected with the winding cavity.

[0011] Further, the anti-breaking assembly further comprises a winding wheel and a pull rope, the front and back ends of the shaft rod are fixedly connected with the winding wheel, and the winding wheel is wound with the pull rope on the surface, and the two ends of the pull rope are fixed on the winding wheels in the connecting plate connected with the flexible plate one and the flexible plate two.

[0012] Further, the shaft rod is elastically connected with the winding cavity through the torsional spring, and the winding wheel is elastically connected with the winding cavity through the shaft rod, the pull rope is close to the surface of the flexible plate one and the flexible plate two, and the length of the pull rope is less than the limit stretching length of the flexible plate one and the flexible plate two.

[0013] Further, the fixing assembly comprises a clamping cavity, a clamping groove and a clamping spring, one side of the insertion groove is provided with the clamping cavity, and the other side of the insertion groove is provided with the clamping groove, and the clamping spring is fixedly connected in the clamping cavity.

[0014] Further, the fixing assembly further comprises a clamping rod and a clamping plate, the inner side of the clamping spring is provided with the clamping rod, one end of the clamping rod is fixedly connected with the clamping plate, and the other end of the clamping rod is provided with an inclined surface.

[0015] Further, the clamping rod is connected with the connecting buckle through the clamping groove, and the clamping rod is embeddedly connected with the insertion plate through the insertion hole, the clamping plate is fixedly connected with the clamping spring, and the clamping plate is elastically connected with the clamping cavity through the clamping spring.

[0016] The application provides a flexible circuit board which is convenient to assemble and has the following advantages: the positive and negative poles can be distinguished during installation to avoid installation in reverse, and the flexible circuit board can also be prevented from being broken due to excessive force during disassembly.

[0017] 1、The present application can distinguish the positive and negative poles of the flexible circuit board according to the rotating direction of the rotating plate during installation, avoiding the situation that the positive and negative poles are connected reversely during installation, and the rotating plate can be rotated out of the rotating groove during disassembly, the connecting point is separated by the rotating plate, the connecting plate is forced, and the disassembly is assisted, and after installation, the embedded block can limit the rotating plate through the embedded groove, and the rotating plate is fixed in the rotating groove, avoiding damage caused by random rotation of the rotating plate.

[0018] 2、The present application can insert the plug plate into the connecting groove, and limit the movement of the interface, when the plug plate is clamped through the connecting groove and the connecting buckle, the connector can be accurately inserted into the interface, avoiding damage caused by the connector skewing, and the sealing plate can seal the connecting groove, avoiding dust or water vapor entering, and the plug plate can also protect the connector before installation, avoiding damage to the connector caused by external impact, affecting use.

[0019] 3、When the plug plate is inserted, the inclined surface of the clamping rod can push the plug plate out of the clamping groove, and the clamping spring is stretched, when the plug plate is completely embedded in the connecting groove, the clamping rod can pass through the plug plate through the plug hole, and then be clamped into the clamping groove again, limiting the plug plate, thereby fixing the connecting plate, ensuring the stable connection between the flexible plate one, the flexible plate two and the hard plate, avoiding loosening, and when disassembling, the plug plate can be limited by lifting the clamping plate, facilitating disassembly.

[0020] 4、When the present application is used, because the flexible plate one and the flexible plate two are connected by the spring wire, the flexible plate has bending performance, and the spring wire also enhances the stretching ability of the flexible circuit board, so that it can be stretched to a certain extent, making use more convenient, and when stretching, the pull rope will be pulled out of the winding wheel with the movement of the flexible plate one and the flexible plate two, the torsional spring will limit the winding wheel through the shaft rod, thereby keeping the pull rope tight, when installing or disassembling the flexible circuit board, if the flexible plate one and the flexible plate two are close to the stretching limit under the action of external force, the pull rope can limit them, avoiding breakage, and when disassembling, pulling the pull rope can drive the winding wheel to rotate, thereby driving the torsional spring to expand through the shaft rod, forcing the jack, thereby pushing the rotating plate out of the rotating groove and limiting the rotating plate, facilitating force. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole sectional view of the main structure of the flexible circuit board of the present application for convenient assembly and installation;

[0022] Figure 2 It is a sectional view of the main structure of the connecting plate of the flexible circuit board of the present application for convenient assembly and installation;

[0023] Figure 3 It is a whole sectional view of the main structure of the flexible circuit board of the present application for convenient assembly and installation;

[0024] Figure 4 The application discloses a flexible circuit board convenient to assemble Figure 3 The application discloses a flexible circuit board convenient to assemble

[0025] Figure 5 The application discloses a flexible circuit board convenient to assemble

[0026] In the figure: 1, flexible plate one; 2, flexible plate two; 3, spring wire; 4, connecting plate; 5, anti-breaking assembly; 501, winding cavity; 502, shaft rod; 503, torsional spring; 504, winding wheel; 505, pull rope; 6, sealing plate; 7, connector; 8, plug-in plate; 9, plug-in hole; 10, connecting buckle; 11, fixing assembly; 1101, clamping cavity; 1102, clamping groove; 1103, clamping spring; 1104, clamping rod; 1105, clamping plate; 12, connecting groove; 13, plug-in groove; 14, interface; 15, hard plate; 16, rotating groove; 17, embedded block; 18, rotating plate; 19, embedded groove; 20, top rod. DETAILED DESCRIPTION

[0027] Please refer to Figures 1 to 5 The application discloses a flexible circuit board convenient to assemble, which comprises a flexible plate one 1 and an anti-breaking assembly 5. The flexible plate one 1 is provided with a flexible plate two 2 on the right side, and the flexible plate one 1 and the flexible plate two 2 are connected with a spring wire 3. The side, away from the spring wire 3, of the flexible plate one 1 and the flexible plate two 2 is fixedly connected with a connecting plate 4. The anti-breaking assembly 5 is symmetrically arranged on the upper and lower sides of the connecting plate 4. The other side of the connecting plate 4 is fixedly connected with a sealing plate 6, and the center of the connecting plate 4 is fixedly connected with a connector 7. The other side of the sealing plate 6 is fixedly connected with a plug-in plate 8 at the upper and lower ends, and the plug-in plate 8 is provided with a plug-in hole 9 on the surface. The side, away from the flexible plate one 1 and the flexible plate two 2, of the connecting plate 4 is provided with a connecting buckle 10, and the upper and lower sides of the connecting buckle 10 are symmetrically provided with a fixing assembly 11. The side of the connecting buckle 10 is provided with a connecting groove 12, and the upper and lower sides of the connecting groove 12 are symmetrically provided with a plug-in groove 13. The center of the connecting groove 12 is provided with an interface 14, and the other side of the connecting buckle 10 is fixedly connected with a hard plate 15.

[0028] Please refer to Figures 1 to 4The joint 7 penetrates the sealing plate 6, the connecting plate 4 and the flexible plate one 1 and the flexible plate two 2 to be electrically connected, and the joint 7 is embeddedly connected with the connecting buckle 10 through the interface 14, the joint 7 is electrically connected with the hard plate 15 through the interface 14, the connecting plate 4 is clasply connected with the connecting buckle 10 through the insertion slot 12, the insertion plate 8 is clasply connected with the connecting buckle 10 through the insertion slot 13, the connecting plate 4 is provided with the rotating slot 16 on the upper and lower sides, and the embedded block 17 is fixedly connected on the front and rear sides of the rotating slot 16, the rotating plate 18 is rotatably connected in the rotating slot 16, the embedded groove 19 is symmetrically provided on the front and rear sides of the rotating plate 18, the top rod 20 is slidably connected in the rotating slot 16, the embedded block 17 is made of elastic plastic, and the embedded block 17 is clasply connected with the rotating plate 18 through the embedded groove 19, the anti-fracture assembly 5 comprises a winding cavity 501, a shaft rod 502 and a torsion spring 503, the winding cavity 501 is symmetrically provided on the upper and lower sides of the connecting plate 4, the shaft rod 502 is rotatably connected in the winding cavity 501, and the torsion spring 503 is fixedly connected between the shaft rod 502 and the connecting plate 4, one end of the top rod 20 is located in the winding cavity 501, and the other end of the top rod 20 is located in the rotating slot 16, the top rod 20 is in contact with the torsion spring 503, and the top rod 20 is slidably connected with the winding cavity 501, the anti-fracture assembly 5 further comprises a winding wheel 504 and a pull rope 505, the winding wheel 504 is fixedly connected on the front and rear ends of the shaft rod 502, and the pull rope 505 is wound on the surface of the winding wheel 504, the pull rope 505 is fixedly connected on the winding wheel 504 in the connecting plate 4 connected with the flexible plate one 1 and the flexible plate two 2, the shaft rod 502 is elastically connected with the winding cavity 501 through the torsion spring 503, the winding wheel 504 is elastically connected with the winding cavity 501 through the shaft rod 502, the pull rope 505 is close to the surface of the flexible plate one 1 and the flexible plate two 2, and the length of the pull rope 505 is less than the limit stretching length of the flexible plate one 1 and the flexible plate two 2;

[0029] Specific operation as follows, can be distinguished according to the rotating direction of the rotating plate 18 when installing, the positive and negative of flexible circuit board, avoid the installation when positive and negative reverse situation, and when disassembling, can be rotated from the rotating plate 18 in rotating groove 16, through the rotating plate 18 will be connected point separation, facilitate to exert force on the connecting plate, auxiliary disassembly, and after installation, the embedded block 17 can be embedded groove 19 to the rotating plate 18 is limited, it is fixed in rotating groove 16, avoid rotating plate 18 random rotation caused by damage, in use, because the flexible plate 1 and flexible plate 2 2 is connected through spring wire 3, therefore, flexible plate has bending performance, spring wire 3 also strengthens the stretching ability of flexible circuit board, so that it can stretch to a certain extent, make its use more convenient, and in stretching, pull rope 505 will be pulled out from the winding wheel 504 along with the movement of flexible plate 1, flexible plate 2 2, torsional spring 503 will be limited through the shaft rod 502 winding wheel 504, so as to keep the pull rope 505 tight, in the installation or disassembly of flexible circuit board, if flexible plate 1, flexible plate 2 2 under the action of external force close to the stretching limit, pull rope 505 can limit it, avoid breaking, and in disassembly, pull the pull rope 505 can drive winding wheel 504 rotation, so as to drive torsional spring 503 expansion through the shaft rod 502, exert force on the ejector rod 20, so as to eject the rotating plate 18 from the rotating groove 16 and limit the rotating plate 18, facilitate to exert force.

[0030] Please refer to Figure 1 、 Figure 3 And Figure 5 , fixed assembly 11 includes card cavity 1101, card slot 1102 and card spring 1103, the one side of the slot 13 is provided with card cavity 1101, and the other side of the slot 13 is provided with card slot 1102, the card cavity 1101 is fixedly connected with card spring 1103, the fixed assembly 11 further includes card rod 1104 and card plate 1105, the inner side of the card spring 1103 is provided with card rod 1104, and one end of the card rod 1104 is fixedly connected with card plate 1105, the other end of the card rod 1104 is provided with an inclined surface, the card rod 1104 is connected with the connecting buckle 10 through the card slot 1102, and the card rod 1104 is embeddedly connected with the plug-in plate 8 through the insertion hole 9, the card plate 1105 is fixedly connected with the card spring 1103, and the card plate 1105 is elastically connected with the card cavity 1101 through the card spring 1103;

[0031] Specific operation as follows, in the installation, the plug plate 8 is inserted into the interface slot 12, and makes the plug plate 8 enter the insertion slot 13, the movement of the interface 14 can be limited, when the plug plate 8 is clamped by the insertion slot 13 and the connecting buckle 10, the connector 7 can be accurately inserted into the interface 14, avoid the connector 7 to be damaged due to deflection, and the sealing plate 6 can seal the interface slot 12, avoid dust or water vapor into, and before installation, the plug plate 8 can also protect the connector 7, avoid the connector 7 to be damaged due to external collision, affect use, when inserting the plug plate 8, the plug plate 8 can provide the inclined surface of the clamping rod 1104 to be pushed out of the clamping groove 1102, and the clamping spring 1103 is stretched, when the plug plate 8 is completely embedded in the insertion slot 13, the clamping rod 1104 can pass through the plug plate 8 through the insertion hole 9, and then be clamped into the clamping groove 1102, limit the plug plate 8, thereby fixing the interface plate 4, ensure the connection between the flexible plate one 1, the flexible plate two 2 and the hard plate 15 is stable, avoid loosening, when disassembling, only need to pull up the clamping plate 1105 to release the limitation of the plug plate 8, convenient to disassemble.

[0032] In summary, the flexible circuit board is convenient to assemble, during installation, the positive and negative poles of the flexible circuit board can be distinguished according to the rotating direction of the rotating plate 18, so that the positive and negative poles are not connected reversely during installation, the flexible plate one 1 and the flexible plate two 2 are connected through the spring wire 3, so that the flexible plate has bending performance and the spring wire 3 strengthens the stretching capacity of the flexible circuit board, so that the flexible circuit board can be stretched to a certain extent, the use is more convenient, during stretching, the pulling rope 505 is pulled out of the winding wheel 504 along with the movement of the flexible plate one 1 and the flexible plate two 2, the torsional spring 503 limits the winding wheel 504 through the shaft rod 502, so that the pulling rope 505 is kept tight, during installation, the plug plate 8 is inserted into the connecting groove 12 and the plug plate 8 enters the plug-in groove 13, so that the movement of the interface 14 is limited, when the plug plate 8 is clamped with the connecting buckle 10 through the plug-in groove 13, the connector 7 can be accurately inserted into the interface 14, so that the connector 7 is not damaged due to deflection, the sealing plate 6 can seal the connecting groove 12, so that dust or water vapor cannot enter, before installation, the plug plate 8 can also protect the connector 7, so that the connector 7 is not damaged due to external impact and the use is affected, when the plug plate 8 is inserted, the inclined surface of the clamping rod 1104 can be provided on the plug plate 8 to push it out of the clamping groove 1102 and stretch the clamping spring 1103, when the plug plate 8 is completely embedded in the plug-in groove 13, the clamping rod 1104 can pass through the plug plate 8 through the plug hole 9 and be clamped into the clamping groove 1102 again, so that the plug plate 8 is limited and the connecting plate 4 is fixed, so that the connection between the flexible plate one 1 and the flexible plate two 2 and the hard plate 15 is stable and is not loose, after installation, the embedded block 17 can limit the rotating plate 18 through the embedded groove 19 and fix the rotating plate 18 in the rotating groove 16, so that the rotating plate 18 is not randomly rotated and is damaged, when disassembled, the plug plate 8 can be limited by lifting the clamping plate 1105, so that the plug plate 8 is convenient to disassemble, when disassembled, the rotating plate 18 can be rotated out of the rotating groove 16, the connecting point is separated through the rotating plate 18, the connecting plate is forced, so that the disassembly is assisted, when the flexible circuit board is installed or disassembled, if the flexible plate one 1 and the flexible plate two 2 are close to the stretching limit under the action of external force, the pulling rope 505 can limit the flexible plate one 1 and the flexible plate two 2, so that the flexible plate one 1 and the flexible plate two 2 are not broken, and when disassembled, the pulling rope 505 is pulled to drive the winding wheel 504 to rotate, so that the torsional spring 503 is expanded through the shaft rod 502 to force the top rod 20, so that the rotating plate 18 is pushed out of the rotating groove 16 and is limited, so that the force is convenient to apply.

[0033] Embodiments of the application are presented for the purpose of illustration and description, and not by way of limitation, and the application is defined only by the claims. Many modifications and variations of the embodiments described herein will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the application and its practical application, and to enable others skilled in the art to best utilize the application, with various modifications as are suited to the particular use contemplated.

Claims

1. A flexible circuit board that is easy to assemble, characterized in that: The invention comprises a flexible plate (1) and an anti-fracture component (5), wherein a flexible plate (2) is provided on the right side of the flexible plate (1), and a spring line (3) is connected between the flexible plate (1) and the flexible plate (2), and the flexible plate (1) and the flexible plate (2) are fixedly connected to a connecting plate (4) on one side away from the spring line (3), and the anti-fracture component (5) is symmetrically arranged on the upper and lower sides of the connecting plate (4), and the other side of the connecting plate (4) is fixedly connected to a sealing plate (6), and the center of the connecting plate (4) is fixedly connected to a joint (7), and the other side of the sealing plate (6) is fixedly connected to the connecting plate (4). The upper and lower ends are fixedly connected with plug boards (8), and a plug hole (9) is provided on the surface of the plug board (8). A connecting buckle (10) is provided on the side of the connecting board (4) away from the flexible board 1 (1) and the flexible board 2 (2), and fixing components (11) are symmetrically provided on the upper and lower sides of the connecting buckle (10). A connecting groove (12) is provided on one side of the connecting buckle (10), and slots (13) are symmetrically provided on the upper and lower sides of the connecting groove (12). An interface (14) is provided in the center of the connecting groove (12). The other side of the connecting buckle (10) is fixedly connected to a hard board. (15), the connecting plate (4) is provided with a rotation groove (16) on the upper and lower sides, and the rotation groove (16) is fixedly connected with an insert (17) on the front and rear sides, a rotating plate (18) is rotatably connected in the rotation groove (16), and the rotating plate (18) is symmetrically provided with an insert groove (19) on the front and rear sides, a top rod (20) is slidably connected in the rotation groove (16), the insert block (17) is made of elastic plastic, and the insert block (17) is connected to the rotating plate (18) by snapping the insert groove (19), and the anti-fracture component (5) includes a winding chamber (501) , an axis rod (502) and a torsion spring (503), the connecting plate (4) is symmetrically provided with a winding cavity (501) on the upper and lower sides, and the winding cavity (501) is rotatably connected with an axis rod (502), a torsion spring (503) is fixedly connected between the axis rod (502) and the connecting plate (4), one end of the push rod (20) is located in the winding cavity (501), and the other end of the push rod (20) is located in the rotating groove (16), the push rod (20) is in contact with the torsion spring (503), and the push rod (20) is slidably connected to the winding cavity (501).

2. A flexible circuit board that is easy to assemble according to claim 1, characterized in that: The connector (7) penetrates the sealing plate (6) and the connecting plate (4) and is electrically connected to the flexible plate 1 (1) and the flexible plate 2 (2), and the connector (7) is engaged and connected with the connecting buckle (10) through the interface (14). The connector (7) is electrically connected to the hard plate (15) through the interface (14), the connecting plate (4) is engaged and connected with the connecting buckle (10) through the connecting groove (12), and the plug-in plate (8) is engaged and connected with the connecting buckle (10) through the slot (13).

3. The flexible circuit board that is easy to assemble according to claim 2, characterized in that: The anti-fracture component (5) further includes a reel (504) and a pull rope (505), wherein the front and rear ends of the shaft (502) are fixedly connected to the reel (504), and the pull rope (505) is wound around the surface of the reel (504), and the two ends of the pull rope (505) are respectively fixed to the reel (504) in the connecting plate (4) to which the flexible plate 1 (1) and the flexible plate 2 (2) are connected.

4. The flexible circuit board that is easy to assemble according to claim 3, characterized in that: The shaft (502) is elastically connected to the winding chamber (501) via a torsion spring (503), and the winding wheel (504) is elastically connected to the winding chamber (501) via the shaft (502). The pull rope (505) is close to the surface of the flexible plate (1) and the flexible plate (2), and the length of the pull rope (505) is less than the ultimate tensile length of the flexible plate (1) and the flexible plate (2).

5. The flexible circuit board that is easy to assemble according to claim 1, characterized in that: The fixing assembly (11) comprises a card cavity (1101), a card slot (1102) and a retaining spring (1103); the card cavity (1101) is provided on one side of the slot (13), and the card slot (1102) is provided on the other side of the slot (13); and the retaining spring (1103) is fixedly connected in the card cavity (1101).

6. The flexible circuit board that is easy to assemble according to claim 5, characterized in that: The fixing assembly (11) further comprises a clamping rod (1104) and a clamping plate (1105); the clamping rod (1104) is provided inside the clamping spring (1103); one end of the clamping rod (1104) is fixedly connected to the clamping plate (1105); and the other end of the clamping rod (1104) is provided with an inclined surface.

7. The flexible circuit board that is easy to assemble according to claim 6, characterized in that: The clamping rod (1104) is connected to the connecting buckle (10) by means of the clamping slot (1102), and the clamping rod (1104) is connected to the inserting plate (8) by means of the insertion hole (9). The clamping plate (1105) is fixedly connected to the clamping spring (1103), and the clamping plate (1105) is elastically connected to the clamping cavity (1101) by means of the clamping spring (1103).

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