A panel light mounting structure, a panel light, and its mounting method

Abstract

The present invention discloses a panel lamp installation structure, a panel lamp and an installation method thereof, wherein the panel lamp installation structure comprises a fixing groove arranged on the back of the lamp body, and a mounting bracket matched and clamped with the fixing groove; a first clamping plate in the mounting bracket slides into the first fixing groove through a first accommodating surface, and is matched and clamped with the first fixing groove through a first abutting surface and a second abutting surface; a second clamping plate in the mounting bracket slides into the second fixing groove through a second accommodating surface and a third accommodating surface, and is matched and clamped with the second fixing groove through a third abutting surface and a fourth abutting surface. The present invention adopts a sliding clamping method to match and connect the panel lamp body with the mounting bracket, which is convenient and fast to install, and has an excellent ceiling suction effect. In addition, the present invention can also realize blind operation during the panel lamp installation process.

Description

Technical Field

[0001] The present invention relates to the technical field of lamps, and in particular to a panel lamp installation structure, a panel lamp and an installation method thereof. Background Art

[0002] Existing panel lights are usually installed by ceiling mounting, but the existing ceiling mounting structure of panel lights is usually to set corresponding openings on the outside of the lamp shell of the panel light, and then use screws to pass through the openings to fix the shell of the panel light to the mounting bracket. This mounting structure affects the overall appearance of the lamp on the one hand, and is inconvenient to install on the other hand. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the technical defects of the background technology and provide a panel lamp installation structure, a panel lamp and an installation method thereof. The present invention adopts a sliding clamping method to match and connect the panel lamp body with the installation bracket, which is convenient and fast to install and has an excellent ceiling effect. In addition, the present invention can also realize blind operation during the installation process of the panel lamp.

[0004] A panel lamp installation structure, comprising a fixing groove arranged on the back of a lamp body, and a mounting bracket matched and clamped with the fixing groove; the fixing groove comprises a first fixing groove and a second fixing groove arranged opposite to each other; a side of the first fixing groove facing the mounting bracket forms a first accommodating surface; a side of the first accommodating surface forms a first abutting surface; the top of the first accommodating surface forms a second abutting surface; a side of the second fixing groove facing the mounting bracket forms a second accommodating surface; a side of the second accommodating surface forms a third accommodating surface; another side of the second accommodating surface forms a third abutting surface; the top of the second accommodating surface forms a The mounting bracket includes a base plate, a first bent plate and a second bent plate formed by bending at both ends of the base plate, and a first clamping plate and a second clamping plate formed by extending the first bent plate and the second bent plate outward respectively; the first clamping plate slides into the first fixing groove through the first accommodating surface, and is matched and clamped with the first fixing groove through the first abutting surface and the second abutting surface; the second clamping plate slides into the second fixing groove through the second accommodating surface and the third accommodating surface, and is matched and clamped with the second fixing groove through the third abutting surface and the fourth abutting surface.

[0005] Furthermore, the width of the first fixing groove is greater than or equal to twice the width of the second fixing groove; the widths of the first clamping plate and the second clamping plate are respectively less than or equal to the width of the second fixing groove; and the other side surface of the first accommodating surface forms a fifth abutment surface.

[0006] Furthermore, the bottom of the first fixing groove extends to both sides to form a first fixing plate; the bottom of the second fixing groove extends to both sides to form a second fixing plate; and the first fixing plate and the second fixing plate are respectively provided with fixing holes.

[0007] Furthermore, mounting holes are respectively arranged on both sides of the bottom plate.

[0008] Furthermore, hook frames are respectively arranged on both sides of the bottom plate; and the lower surfaces of the first fixing plate and the second fixing plate are respectively recessed to form guide grooves.

[0009] Furthermore, a connecting plate is arranged between the base plates; and a positioning plate is arranged on the connecting plate.

[0010] Furthermore, the connecting plate is matched and connected with the middle part of the base plate; the positioning plate is matched and connected with the middle part of the connecting plate; the base plate includes a first base plate and a second base plate which are arranged in parallel and spaced apart; the connecting plate includes a first connecting plate and a second connecting plate which are arranged in parallel and spaced apart; the two ends of the first connecting plate and the second connecting plate are respectively perpendicularly intersected with the first base plate and the second base plate; the two ends of the positioning plate are respectively intersected with the first connecting plate and the second connecting plate; a through hole is arranged in the middle part of the positioning plate, and positioning holes are spaced apart and evenly distributed on the outside of the through hole.

[0011] Furthermore, the positioning hole includes a waist-shaped hole and an arc-shaped hole arranged between two adjacent waist-shaped holes.

[0012] A panel lamp comprises a panel lamp body and a panel lamp mounting structure as described above arranged on the back of the panel lamp body.

[0013] A method for installing a panel lamp, the panel lamp comprising a panel lamp body and a panel lamp installation structure as described above arranged on the back of the panel lamp body; the method for installing the panel lamp comprises the following steps:

[0014] A. Turn off the power;

[0015] B. Fixing the mounting bracket to the surface of a fixed object;

[0016] C. Connect the wires to the panel light body;

[0017] D. Positioning one end of the panel lamp body with the first fixing groove unilaterally, that is, pushing the panel lamp body in a first direction, sliding the first clamping plate into the first accommodating surface, and then matching and clamping with the first fixing groove through the first abutting surface and the second abutting surface;

[0018] E. Lift the other end of the panel lamp body and locate the second fixing groove through the second clamping plate;

[0019] F. Pushing the first clamping plate in the opposite direction of the first direction by a distance greater than or equal to the width of the second fixing groove, at which time the fifth abutting surface blocks the first clamping plate, so that the first clamping plate always moves in the first fixing groove;

[0020] G. Push the panel lamp body toward the first direction again, the first clamping plate slides into the first fixing groove through the first accommodating surface, and is matched and clamped with the first fixing groove through the first abutting surface and the second abutting surface; the second clamping plate slides into the second fixing groove through the second accommodating surface and the third accommodating surface, and is matched and clamped with the second fixing groove through the third abutting surface and the fourth abutting surface.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] (1) The present invention adopts a sliding card connection method to match and connect the panel lamp body with the mounting bracket, which is convenient and fast to install and has an excellent ceiling effect;

[0023] (2) The present invention sets the width of the first fixing groove to be greater than or equal to twice the width of the second fixing groove, and the widths of the first clamping plate and the second clamping plate are respectively less than or equal to the width of the second fixing groove. At the same time, by providing a fifth abutting surface, the first clamping plate always moves in the first fixing groove, thereby realizing blind operation during the installation process of the panel light;

[0024] (3) The present invention fixes one end of the safety wire to the screw connecting the fixing hole and the panel lamp body, and fixes the other end to the hook frame, thereby improving the safety of the installation process;

[0025] (4) The mounting bracket of the present invention forms a tic-tac-toe structure, which is suitable for the installation of large panel lights, making the connection more stable and safe;

[0026] (5) The present invention positions and installs the bracket by setting a positioning plate, a positioning hole and other structures, which has a simple structure and is easy to operate;

[0027] (6) The mounting bracket of the present invention is accommodated on the back of the panel lamp body. The mounting bracket is ultra-thin and not exposed, and the panel lamp is more beautiful after installation;

[0028] (7) The mounting bracket of the present invention has low cost, which effectively solves the cost problem. It saves materials and is very reliable for installation and connection. It is suitable for the installation of various surface-mounted panel lights, and is safe, convenient, fast and neat. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structural diagram of the panel lights of embodiments 1 to 3 of the present invention;

[0030] Figure 2 It is a side structural diagram of the panel lights of embodiments 1 to 3 of the present invention;

[0031] Figure 3 It is a back structure diagram of the panel lights of embodiments 1 to 3 of the present invention;

[0032] Figure 4 This is a structural diagram of the first fixing groove of embodiments 1 to 3 of the present invention;

[0033] Figure 5 It is a structural diagram of the second fixing groove of embodiments 1 to 3 of the present invention;

[0034] Figure 6 Partial exploded view of the mounting bracket and the fixing groove of embodiments 1 to 3 of the present invention;

[0035] Figure 7 This is a partial exploded view from another angle of the mounting bracket and the fixing groove of embodiments 1 to 3 of the present invention.

[0036] The corresponding component names of the various reference numerals in the figure are:

[0037] 1-fixing groove; 2-mounting bracket; 3-first fixing groove; 4-second fixing groove; 5-first accommodating surface; 6-first abutting surface; 7-second abutting surface; 8-second accommodating surface; 9-third accommodating surface; 10-third abutting surface; 11-fourth abutting surface; 12-bottom plate; 13-first bending plate; 14-second bending plate; 15-first clamping plate; 16-second clamping plate; 17-fifth abutting surface; 18-first fixing plate; 19-second fixing plate; 20-fixing hole; 21-mounting hole; 22-hook bracket; 23-guide groove; 24-connecting plate; 25-positioning plate; 26-first bottom plate; 27-second bottom plate; 28-first connecting plate; 29-second connecting plate; 30-through hole; 31-positioning hole; 32-waist-shaped hole; 33-arc-shaped hole; 34-panel lamp body. DETAILED DESCRIPTION

[0038] In order to better understand the content of the present invention, further description is given below in conjunction with specific embodiments and accompanying drawings. It should be understood that these embodiments are only used to further illustrate the present invention, and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art may make some non-essential changes or adjustments to the present invention, which still belong to the protection scope of the present invention.

[0039] Example 1

[0040] A panel light installation structure, such as Figures 1 to 7As shown, it includes a fixing groove 1 arranged on the back of the lamp body, and a mounting bracket 2 matched and snapped with the fixing groove 1; the fixing groove 1 includes a first fixing groove 3 and a second fixing groove 4 arranged opposite to each other; the first fixing groove 3 forms a first accommodating surface 5 on a side facing the mounting bracket 2; a first abutting surface 6 is formed on a side of the first accommodating surface 5; a second abutting surface 7 is formed on the top of the first accommodating surface 6; a second fixing groove 4 forms a second accommodating surface 8 on a side facing the mounting bracket 2; a third accommodating surface 9 is formed on a side of the second accommodating surface 8; a third abutting surface 10 is formed on the other side of the second accommodating surface 8; a fourth abutting surface 11 is formed on the top of the second accommodating surface 8; the The mounting bracket 2 includes a base plate 12, a first bent plate 13 and a second bent plate 14 formed by bending at both ends of the base plate 12, and a first clamping plate 15 and a second clamping plate 16 formed by extending outward from the first bent plate 13 and the second bent plate 14 respectively; the first clamping plate 15 slides into the first fixing groove 3 through the first accommodating surface 5, and is matched and clamped with the first fixing groove 3 through the first abutting surface 6 and the second abutting surface 7; the second clamping plate 16 slides into the second fixing groove 4 through the second accommodating surface 8 and the third accommodating surface 9, and is matched and clamped with the second fixing groove 4 through the third abutting surface 10 and the fourth abutting surface 11.

[0041] See also Figure 3 and Figure 6 The front opening of the first fixing groove 3 forms a first accommodating surface 5, the left side surface of the first fixing groove 3 forms a first abutting surface 6, and the top of the first fixing groove 3 forms a second abutting surface 7.

[0042] See also Figure 3 and Figure 6 The front opening of the second fixed groove 4 forms a second accommodating surface 8, and the right side opening of the second fixed groove 4 forms a third accommodating surface 9. The second accommodating surface 8 and the third accommodating surface 9 are interconnected; the left side of the second fixed groove 4 forms a third abutting surface 10, and the top of the second fixed groove 4 forms a fourth abutting surface 11.

[0043] By adopting the above sliding clamping method to match and connect the panel lamp body 34 with the mounting bracket 2, the installation is convenient and fast, and the ceiling-mounting effect is excellent.

[0044] The width of the first fixing groove 3 is greater than or equal to twice the width of the second fixing groove 4; the widths of the first clamping plate 15 and the second clamping plate 16 are respectively less than or equal to the width of the second fixing groove 4; Figure 6 As shown, b≥2a, c≤a; the other side surface of the first receiving surface 3 forms a fifth abutting surface 17 .

[0045] By means of the above arrangement, the first clamping plate 15 always moves in the first fixing groove 4, thereby achieving blind operation during the installation of the panel light.

[0046] The bottom of the first fixing groove 3 extends to both sides to form a first fixing plate 18; the bottom of the second fixing groove 4 extends to both sides to form a second fixing plate 19; the first fixing plate 18 and the second fixing plate 19 are respectively provided with fixing holes 20; through the above arrangement, it is convenient to fix the first fixing groove 3 and the second fixing groove 4 to the back side of the panel lamp body 34.

[0047] Mounting holes 21 are respectively provided on both sides of the bottom plate 12 to facilitate fixing the mounting bracket 2 to the surface of a fixed object such as a wall or a ceiling.

[0048] Hook frames 22 are respectively disposed on both sides of the bottom plate 12 ; the hook frames 22 are disposed inside the mounting holes 21 ; and the lower surfaces of the first fixing plate 18 and the second fixing plate 19 are respectively recessed to form guide grooves 23 .

[0049] One end of the safety line is fixed to the screw connecting the fixing hole 20 and the panel lamp body 34, the safety line passes through the guide groove 23, and the other end of the safety line is fixed to the hook frame 22 of the mounting bracket 2, which improves the safety of the installation process. The entire panel lamp can be installed by one person.

[0050] A connecting plate 24 is disposed between the bottom plates 12 ; a positioning plate 25 is disposed on the connecting plate 24 .

[0051] The connecting plate 24 is matched and connected with the middle part of the base plate 12; the positioning plate 25 is matched and connected with the middle part of the connecting plate 24; the base plate 12 includes a first base plate 26 and a second base plate 27 which are arranged in parallel and spaced apart; the connecting plate 24 includes a first connecting plate 28 and a second connecting plate 29 which are arranged in parallel and spaced apart; the two ends of the first connecting plate 28 and the second connecting plate 29 are respectively perpendicularly intersected with the first base plate 26 and the second base plate 27; the two ends of the positioning plate 25 are respectively intersected with the first connecting plate 28 and the second connecting plate 29; a through hole 30 is arranged in the middle part of the positioning plate 25, and positioning holes 31 are spaced and evenly distributed on the outside of the through hole 30.

[0052] The mounting bracket 2 is arranged as above to form a tic-tac-toe structure, which is suitable for the installation of large panel lights such as square panel lights, making the connection more stable and safe; at the same time, the mounting bracket 2 is positioned by setting structures such as positioning plates 25 and positioning holes 31, which has a simple structure and is easy to operate.

[0053] The base plate 12, the connecting plate 24 and the positioning plate 25 in the cross-shaped mounting bracket are made of iron and are riveted to each other. The material of the fixing groove 1 is also iron, and the entire panel light mounting structure has a low cost.

[0054] The positioning hole 31 includes a waist-shaped hole 32 and an arc-shaped hole 33 disposed between two adjacent waist-shaped holes 32 .

[0055] The number of the waist-shaped holes is four.

[0056] Through the above arrangement, the positioning plate 25 can be adapted to wiring boards of different specifications, thereby improving the positioning accuracy.

[0057] Example 2

[0058] A panel light comprises a panel light body 34 and a panel light mounting structure as described in Embodiment 1 arranged on the back of the panel light body 34.

[0059] The mounting bracket 2 is accommodated on the back of the panel lamp body 34. The mounting bracket 2 is ultra-thin and not exposed, and the panel lamp is more beautiful after installation.

[0060] Example 3

[0061] A method for installing a panel light, the panel light comprising a panel light body 34, and a panel light installation structure as described in Example 1 arranged on the back of the panel light body 34; the method for installing the panel light comprises the following steps, see Figure 3 and Figure 6 :

[0062] A. Turn off the power;

[0063] B. Fixing the mounting bracket 2 to the surface of a fixed object;

[0064] C. Connecting the wires to the panel light body 34;

[0065] D. One end of the panel lamp body 34 is unilaterally positioned with the first fixing groove 3, that is, the panel lamp body 34 is pushed in the first direction, the first clamping plate 15 slides into the first accommodating surface 5, and then matches and clamps with the first fixing groove 3 through the first abutting surface 6 and the second abutting surface 7;

[0066] E. Lift the other end of the panel lamp body 34 and locate the second fixing groove 4 through the second clamping plate 16;

[0067] F. Push the first clamping plate 15 in the opposite direction of the first direction by a distance greater than or equal to the width of the second fixing groove 4. At this time, the fifth abutting surface 17 blocks the first clamping plate 15, so that the first clamping plate 15 always moves in the first fixing groove 3;

[0068] G. Push the panel lamp body 34 toward the first direction again, the first clamping plate 15 slides into the first fixing groove 3 through the first accommodating surface 5, and is matched and clamped with the first fixing groove 3 through the first abutting surface 6 and the second abutting surface 7; the second clamping plate 16 slides into the second fixing groove 4 through the second accommodating surface 8 and the third accommodating surface 9, and is matched and clamped with the second fixing groove 4 through the third abutting surface 10 and the fourth abutting surface 11.

[0069] The specific installation process of the panel light of the present invention is as follows. Figure 3 and Figure 6 :

[0070] A. Turn off the power;

[0071] B. Find the live wire, neutral wire and ground wire at the installation location;

[0072] C. Screws are passed through the positioning holes 31 in the positioning plate 25 to connect the positioning plate 25 to the junction box, thereby determining the installation position of the mounting bracket 2;

[0073] D. Mark the installation position of the mounting bracket on the surface of a fixed object such as a wall or ceiling through the mounting holes;

[0074] E. Remove the mounting bracket 2 from the junction box;

[0075] F. Use an impact drill to drill holes at the marked locations on the surface of fixed objects such as walls or ceilings;

[0076] G. Use expansion screws or toggle bolts to pass through the mounting holes 21 and the holes to fix the mounting bracket 2 to the surface of a fixed object such as a wall or ceiling, and pass the wires from the junction box through the through holes 30;

[0077] H. Fix one end of the safety wire to the screw connecting the fixing hole 20 and the panel lamp body 34, pass the safety wire through the guide groove 23, and fix the other end of the safety wire to the hook frame 22 of the mounting bracket 2;

[0078] I. Connect the wires in the junction box to the panel light body 34;

[0079] J. Position the upper end of the panel lamp body 34 unilaterally with the first fixing groove 3, that is, push the panel lamp body 34 to the left, slide the first clamping plate 15 into the first accommodating surface 5, and then match and clamp with the first fixing groove 3 through the first abutting surface 6 and the second abutting surface 7;

[0080] K. Lift the lower end of the panel lamp body 34 and position the second fixing groove 4 through the second clamping plate 16;

[0081] L. Push the first clamping plate 15 to the right by a distance greater than or equal to the width of the second fixing groove 4. At this time, the fifth abutting surface 17 blocks the first clamping plate 15, so that the first clamping plate 15 always moves in the first fixing groove 3;

[0082] M. Push the panel lamp body 34 to the left again, the first clamping plate 15 slides into the first fixing groove 3 through the first accommodating surface 5, and is matched and clamped with the first fixing groove 3 through the first abutting surface 6 and the second abutting surface 7; the second clamping plate 16 slides into the second fixing groove 4 through the second accommodating surface 8 and the third accommodating surface 9, and is matched and clamped with the second fixing groove 4 through the third abutting surface 10 and the fourth abutting surface 11;

[0083] The specific disassembly process of the panel light of the present invention is as follows. Figure 3 and Figure 6 :

[0084] A. Turn off the power;

[0085] B. Push the panel lamp body 34 to the right to separate the first fixing groove 3 and the second fixing groove 4 from the first clamping plate 15 and the second clamping plate 16 respectively;

[0086] C. Separate the wires from the panel light body 34 from the wires from the junction box;

[0087] D. Separate the safety line from the hook frame.

[0088] The above description is not intended to limit the invention, and the invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by a person skilled in the art within the essential scope of the invention shall also fall within the protection scope of the invention.

Claims

1. A panel light installation structure, characterized in that: The lamp comprises a fixing groove (1) arranged on the back of a lamp body, and a mounting bracket (2) matched and snap-fitted with the fixing groove (1); the fixing groove (1) comprises a first fixing groove (3) and a second fixing groove (4) arranged opposite to each other; a first accommodating surface (5) is formed on a side of the first fixing groove (3) facing the mounting bracket (2); a first abutting surface (6) is formed on a side of the first accommodating surface (5); a second abutting surface (7) is formed on the top of the first accommodating surface (5); a second accommodating surface (8) is formed on a side of the second fixing groove (4) facing the mounting bracket (2); a third accommodating surface (9) is formed on a side of the second accommodating surface (8); a third abutting surface (10) is formed on the other side of the second accommodating surface (8); a fourth abutting surface (11) is formed on the top of the second accommodating surface (8); The mounting bracket (2) comprises a bottom plate (12), a first bent plate (13) and a second bent plate (14) formed by bending at two ends of the bottom plate (12), and a first clamping plate (15) and a second clamping plate (16) formed by extending outward from the first bent plate (13) and the second bent plate (14); the first clamping plate (15) slides into the first fixing groove (3) through the first accommodating surface (5), and is matched and clamped with the first fixing groove (3) through the first abutting surface (6) and the second abutting surface (7); the second clamping plate (16) slides into the second fixing groove (4) through the second accommodating surface (8) and the third accommodating surface (9), and is matched and clamped with the second fixing groove (4) through the third abutting surface (10) and the fourth abutting surface (11); The width of the first fixing groove (3) is greater than or equal to twice the width of the second fixing groove (4); the widths of the first clamping plate (15) and the second clamping plate (16) are respectively less than or equal to the width of the second fixing groove (4); the other side surface of the first accommodating surface (5) forms a fifth abutting surface (17); The bottom of the first fixing groove (3) extends to both sides to form a first fixing plate (18); the bottom of the second fixing groove (4) extends to both sides to form a second fixing plate (19); the first fixing plate (18) and the second fixing plate (19) are respectively provided with fixing holes (20); A connecting plate (24) is provided between the bottom plates (12); a positioning plate (25) is provided on the connecting plate (24); The connecting plate (24) is matched and connected with the middle part of the bottom plate (12); the positioning plate (25) is matched and connected with the middle part of the connecting plate (24); the bottom plate (12) comprises a first bottom plate (26) and a second bottom plate (27) which are arranged in parallel and spaced apart; the connecting plate (24) comprises a first connecting plate (28) and a second connecting plate (29) which are arranged in parallel and spaced apart; the two ends of the first connecting plate (28) and the second connecting plate (29) respectively intersect the first bottom plate (26) and the second bottom plate (27) perpendicularly; the two ends of the positioning plate (25) respectively intersect the first connecting plate (28) and the second connecting plate (29); a through hole (30) is arranged in the middle part of the positioning plate (25), and positioning holes (31) are spaced and evenly distributed outside the through hole (30).

2. A panel light installation structure as claimed in claim 1, characterized in that: Mounting holes (21) are respectively provided on both sides of the bottom plate (12).

3. A panel light installation structure as claimed in claim 2, characterized in that: Hook frames (22) are respectively arranged on both sides of the bottom plate (12); and the lower surfaces of the first fixing plate (18) and the second fixing plate (19) are respectively recessed to form guide grooves (23).

4. A panel light installation structure as claimed in claim 1, characterized in that: The positioning hole (31) comprises a waist-shaped hole (32) and an arc-shaped hole (33) arranged between two adjacent waist-shaped holes (32).

5. A panel light, characterized in that: The panel lamp comprises a panel lamp body (34), and a panel lamp mounting structure according to any one of claims 1 to 4, which is arranged on the back of the panel lamp body (34).

6. A method for installing a panel light, characterized in that: The panel light comprises a panel light body (34), and a panel light installation structure according to any one of claims 1 to 4, which is arranged on the back of the panel light body (34); the panel light installation method comprises the following steps: A. Turn off the power; B. fixing the mounting bracket (2) to the surface of a fixed object; C. Connecting the electric wires to the panel light body (34); D. One end of the panel lamp body (34) is unilaterally positioned with the first fixing groove (3), that is, the panel lamp body (34) is pushed in a first direction, the first clamping plate (15) slides into the first accommodating surface (5), and then the first abutting surface (6) and the second abutting surface (7) are matched and clamped with the first fixing groove (3); E. Lifting the other end of the panel lamp body (34) and positioning the second fixing groove (4) via the second clamping plate (16); F. Pushing the first clamping plate (15) in the opposite direction to the first direction by a distance greater than or equal to the width of the second fixing groove (4), at which time the fifth abutting surface (17) blocks the first clamping plate (15), so that the first clamping plate (15) always moves in the first fixing groove (3); G. Push the panel lamp body (34) toward the first direction again, so that the first clamping plate (15) slides into the first fixing groove (3) through the first accommodating surface (5), and is simultaneously matched and clamped with the first fixing groove (3) through the first abutting surface (6) and the second abutting surface (7); the second clamping plate (16) slides into the second fixing groove (4) through the second accommodating surface (8) and the third accommodating surface (9), and is simultaneously matched and clamped with the second fixing groove (4) through the third abutting surface (10) and the fourth abutting surface (11).

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