Suspended ceiling plate with built-in light

Abstract

The utility model discloses a ceiling plate with built-in light in the technical field of building material equipment, which comprises a shell, a first support frame and a second support frame are mounted in the shell, a mounting cavity is formed between the first support frame and the inner wall of the shell, a mounting plate is connected in the mounting cavity in a sliding manner, the mounting plate is used for bearing a lamp module, and the second support frame is used for supporting the lamp module. A transparent cavity is formed between the second supporting frame and the first supporting frame, a transparent mechanism is slidably connected into the transparent cavity, and the transparent mechanism is used for projecting lamplight; a first clamping mechanism for clamping the mounting plate and a first limiting mechanism for fixing the mounting plate are arranged in the first supporting frame, and the transparent mechanism drives the first clamping mechanism to clamp the mounting plate in the process of being inserted into the transparent cavity and drives the first limiting mechanism to fix the mounting plate at the same time; and a second clamping mechanism and a second limiting mechanism are arranged in the second supporting frame, the second clamping mechanism is used for clamping the transparent mechanism, and the second limiting mechanism is used for fixing the transparent mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of building material equipment, in particular to a ceiling panel with built-in lighting. Background Art

[0002] The traditional ceiling includes: a hanger, one end of which is fixed to the wall and the other end is fixed with a connecting head; both ends of the connecting head are respectively provided with hanger fixing holes and main keel fixing holes; the main keel, the upper and lower surfaces of which are respectively formed with a connecting head mounting groove and a secondary keel mounting groove; the secondary keel, one side of which is formed with a plug structure compatible with the connecting head mounting groove, and the side away from the plug structure is formed with a "T"-shaped mounting component for fixing the ceiling panel; the traditional ceiling lamp structure includes: a lamp panel, a lamp tube installed on the lamp panel, and a lampshade. This type of embedded ceiling lamp is usually installed on the keel and hung by a hanger installed on the roof of the house.

[0003] Embedded ceiling lights are generally used on the market. When installing this type of light, it is necessary to reserve an installation port in the ceiling system. The setting of the installation port increases the workload of workers and the disassembly and assembly process is more cumbersome. Utility Model Content

[0004] The purpose of the utility model is to provide a ceiling panel with built-in lighting to solve the above-mentioned problem that embedded ceiling lamps are generally used on the market. When installing this method, it is necessary to reserve an installation port in the ceiling system. The provision of the installation port increases the workload of workers and the disassembly and assembly process is relatively cumbersome.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A ceiling panel with built-in lighting, comprising a shell, a first support frame and a second support frame installed in the shell, a mounting cavity formed between the first support frame and the inner wall of the shell, a mounting plate slidably connected in the mounting cavity, the mounting plate is used to carry a lamp module, a transparent cavity is formed between the second support frame and the first support frame, a transparent mechanism is slidably connected in the transparent cavity, and the transparent mechanism is used to project light;

[0007] The first support frame is provided with a first clamping mechanism for clamping the mounting plate, and a first limiting mechanism for fixing the mounting plate. When the transparent mechanism is inserted into the transparent cavity, the first clamping mechanism is driven to clamp the mounting plate, and the first limiting mechanism is driven to fix the mounting plate.

[0008] A second clamping mechanism and a second limiting mechanism are provided in the second supporting frame, wherein the second clamping mechanism is used for clamping the transparent mechanism, and the second limiting mechanism is used for fixing the transparent mechanism.

[0009] As a further solution of the utility model: the first support frame and the second support frame are both two parallel support rods, and the first support frame and the second support frame are parallel to each other.

[0010] As a further solution of the utility model: a second limiting groove and a driving groove that are connected through are provided in the two rods of the second support frame, the second limiting groove and the driving groove pass through the second support frame, and the width of the driving groove is smaller than the second limiting groove, the second limiting mechanism includes a second limiting plate slidably connected between the two second limiting grooves, and driving blocks slidably connected in the two driving grooves respectively, the two driving blocks are fixedly connected to the side faces of the second limiting plate, and the top ends of the two driving blocks are provided with a second inclined surface, and the driving block drives the second clamping mechanism through the second inclined surface to clamp the transparent mechanism.

[0011] As a further solution of the utility model: the transparent mechanism includes an outer frame and a transparent plate, the transparent plate can transmit light and is fixedly installed on the inner circle of the outer frame, and the thickness of the transparent plate is smaller than the outer frame; the driving block drives the second clamping mechanism through the second inclined surface, and the second clamping mechanism clamps the outer frame. At the same time, the second limiting plate limits and fixes the free edge of the outer frame, and is inserted into the second groove opened on the first support frame, and the second groove limits the second limiting plate to prevent lateral movement; the second support frame is threaded with a screw, and the screw is screwed into the second limiting plate to fix the second limiting plate.

[0012] As a further solution of the utility model: a second clamping groove which is connected with the driving groove is formed on the second support frame, and the second clamping mechanism is located in the second clamping groove and includes a clamping plate, a first inclined surface and a sliding rod, wherein: the clamping plate is slidably connected in the second clamping groove and can be vertically lifted and lowered along the second clamping groove; a first inclined surface is formed at the ends of the two clamping plates close to the driving block, and the driving block is slidably connected to the first inclined surface through the second inclined surface to drive the clamping plate to rise vertically; a plurality of sliding rods are provided and installed on the bottom surface of the second clamping groove, and the clamping plate is sleeved on the sliding rod and lifted and lowered along the sliding rod.

[0013] As a further solution of the utility model: a first limit groove is provided on the two rods of the first support frame, and the first limit mechanism includes a lifting block, a second curved surface and a first limit plate, wherein: the first limit plate is installed at the upper end of the lifting block, and the thickness is smaller than the lifting block, the first limit plate passes through the first limit groove and the installation cavity, and is inserted into the first groove opened in the outer shell to limit and fix the installed installation plate in place; the lifting block matches the first limit groove, and the lifting block is inserted into the first limit groove to maintain the stability of the first limit plate; the second curved surface is opened on the bottom surface of the lifting block to facilitate being driven by the outer frame.

[0014] As a further solution of the utility model: a plurality of first clamping grooves are provided on the first support frame, the first clamping grooves are wide at the upper end and narrow at the lower end, and pass through the first support frame; the first clamping mechanism includes a clamping block slidably connected to the upper end of the first clamping groove, and a lifting rod fixedly installed at the lower end of the clamping block, the lifting rod is slidably inserted at the lower end of the first clamping groove, and a first arc-shaped surface is provided at the bottom end of the lifting rod to facilitate being driven by the outer frame.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] In the utility model, after the mounting plate is inserted into the mounting cavity, the transparent mechanism can drive the first clamping mechanism to clamp the mounting plate, and at the same time drive the first limiting mechanism to fix the mounting plate.

[0017] The first clamping groove in the utility model is arranged with a wide upper end and a narrow lower end, which can prevent the clamping block from escaping from the first clamping groove; the arrangement of the first arc-shaped surface makes it easy for the outer frame to drive the lifting rod and the clamping block to rise, and clamp the mounting plate to maintain the stability of the mounting plate. The above process is quick and convenient, and reduces the workload of workers.

[0018] In the utility model, after the transparent plate and the outer frame are inserted into the transparent cavity, the second limiting mechanism can limit and fix the free edge of the outer frame, and at the same time, the second limiting mechanism drives the second clamping mechanism to clamp the outer frame, so that the transparent plate and the outer frame are fixed in the transparent cavity. The above process is quick and convenient, and the workload of workers is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the utility model in an unassembled state;

[0021] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0022] Figure 4 It is a structural schematic diagram of the utility model in an assembled state;

[0023] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0024] Figure 6 It is a three-dimensional structural schematic diagram of the transparent mechanism in the utility model;

[0025] Figure 7 It is a three-dimensional structural schematic diagram of the first clamping mechanism in the utility model;

[0026] Figure 8It is a three-dimensional structural schematic diagram of the first limiting mechanism in the utility model;

[0027] Fig. 9 It is a three-dimensional structural schematic diagram of the second clamping mechanism in the utility model;

[0028] Fig.10 It is a schematic diagram of the three-dimensional structure of the second limiting mechanism in the utility model.

[0029] In the figure: 1. shell; 11. installation cavity; 12. transparent cavity; 13. first groove; 2. first support frame; 21. first clamping groove; 22. first limiting groove; 23. second groove; 3. second support frame; 31. second clamping groove; 32. second limiting groove; 33. driving groove; 4. mounting plate; 5. transparent mechanism; 51. outer frame; 52. transparent plate; 6. first clamping mechanism; 61. lifting rod; 62. first arcuate surface; 63. clamping block; 7. first limiting mechanism; 71. lifting block; 72. second arcuate surface; 73. first limiting plate; 8. second clamping mechanism; 81. clamping plate; 82. first inclined surface; 83. sliding rod; 9. second limiting mechanism; 91. second limiting plate; 92. driving block; 93. second inclined surface; 94. screw. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0031] A ceiling panel with built-in lighting comprises an outer shell 1, in which a first support frame 2 and a second support frame 3 are installed, wherein the first support frame 2 and the second support frame 3 are both two parallel support rods, and the first support frame 2 and the second support frame 3 are parallel to each other; an installation cavity 11 is formed between the first support frame 2 and the inner wall of the outer shell 1, and a mounting plate 4 is slidably connected in the installation cavity 11, and the mounting plate 4 is used to carry a lamp module; a transparent cavity 12 is formed between the second support frame 3 and the first support frame 2, and a transparent mechanism 5 is slidably connected in the transparent cavity 12, and the transparent mechanism 5 is used to project light.

[0032] Through the above technical solution, in the utility model, after the mounting plate 4 is inserted into the mounting cavity 11 , the lamp module is fixed to the lower surface of the mounting plate 4 , and then the transparent mechanism 5 is inserted into the transparent cavity 12 .

[0033] like Figure 1-Figure 10As shown, in this embodiment: the transparent mechanism 5 includes an outer frame 51 and a transparent plate 52 , the transparent plate 52 can transmit light and is fixedly installed on the inner circle of the outer frame 51 , and the thickness of the transparent plate 52 is smaller than that of the outer frame 51 .

[0034] Through the above technical solution, in the utility model, the thickness of the outer frame 51 is greater than that of the transparent plate 52, so the transparent plate 52 can be protected to prevent wear and tear; the transparent plate 52 can pass light.

[0035] like Figure 1-Figure 10 As shown, in this embodiment: a first clamping mechanism 6 for clamping the mounting plate 4, and a first limiting mechanism 7 for fixing the mounting plate 4 are provided in the first supporting frame 2; when the transparent mechanism 5 is inserted into the transparent cavity 12, the first clamping mechanism 6 is driven to clamp the mounting plate 4, and the first limiting mechanism 7 is driven to fix the mounting plate 4.

[0036] Through the above technical solution, after the mounting plate 4 in the utility model is inserted into the mounting cavity 11 , the transparent mechanism 5 can drive the first clamping mechanism 6 to clamp the mounting plate 4 , and at the same time drive the first limiting mechanism 7 to fix the mounting plate 4 .

[0037] like Figure 1-Figure 10 As shown, in this embodiment: a first limiting groove 22 is provided on the two rods of the first support frame 2, and the first limiting mechanism 7 includes a lifting block 71, a second curved surface 72 and a first limiting plate 73, wherein: the first limiting plate 73 is installed on the upper end of the lifting block 71, and the thickness is less than the lifting block 71, the first limiting plate 73 passes through the first limiting groove 22 and the mounting cavity 11, and is inserted into the first groove 13 provided in the outer shell 1 to limit and fix the installed mounting plate 4 in place; the lifting block 71 matches the first limiting groove 22, and the lifting block 71 is inserted into the first limiting groove 22 to maintain the stability of the first limiting plate 73; the second curved surface 72 is provided on the bottom surface of the lifting block 71 to facilitate being driven by the outer frame 51.

[0038] Through the above technical scheme, the setting of the second curved surface 72 in the utility model makes it convenient for the outer frame 51 to drive the lifting block 71 and the first limiting plate 73 to rise, so as to limit and fix the free end of the mounting plate 4; the width of the lifting block 71 is greater than the first limiting plate 73, and at the same time matches the first limiting groove 22, so that after the lifting block 71 is inserted into the first limiting groove 22, the position of the first limiting plate 73 is fixed.

[0039] like Figure 1-Figure 10As shown, in this embodiment: a plurality of first clamping grooves 21 are provided on the first support frame 2, the first clamping grooves 21 are wide at the upper end and narrow at the lower end, and pass through the first support frame 2; the first clamping mechanism 6 includes a clamping block 63 slidably connected to the upper end of the first clamping groove 21, and a lifting rod 61 fixedly installed at the lower end of the clamping block 63, the lifting rod 61 is slidably inserted at the lower end of the first clamping groove 21, and a first arc-shaped surface 62 is provided at the bottom end of the lifting rod 61 to facilitate being driven by the outer frame 51.

[0040] Through the above technical scheme, the setting of the first clamping groove 21 in the utility model with a wide upper end and a narrow lower end can prevent the clamping block 63 from escaping from the first clamping groove 21; the setting of the first arc-shaped surface 62 facilitates the outer frame 51 to drive the lifting rod 61 and the clamping block 63 to rise, and clamp the mounting plate 4 to maintain the stability of the mounting plate 4. The above process is quick and convenient, reducing the workload of workers.

[0041] The process of clamping and fixing the mounting plate 4 by the first clamping mechanism 6 and the first limiting mechanism 7 is as follows:

[0042] During the process of inserting the outer frame 51 into the transparent cavity 12, the lifting block 71 and the first limiting plate 73 are driven to rise synchronously through the second arc surface 72. After the first limiting plate 73 extends into the installation cavity 11, the free end of the installation plate 4 is limited and fixed. As the first limiting plate 73 continues to rise, the first limiting plate 73 is inserted into the first limiting groove 22, and the first limiting groove 22 prevents the first limiting plate 73 from lateral movement.

[0043] When the outer frame 51 contacts the first arc surface 62 , the lifting rod 61 and the clamping block 63 are driven to rise synchronously. The clamping block 63 presses the mounting plate 4 upwards to continue to fix the position of the mounting plate 4 , and cooperates with the first limit plate 73 to jointly maintain the stability of the mounting plate 4 .

[0044] like Figure 1-Figure 10 As shown, in this embodiment: a second clamping mechanism 8 and a second limiting mechanism 9 are provided in the second support frame 3 , the second clamping mechanism 8 is used to clamp the transparent mechanism 5 , and the second limiting mechanism 9 is used to fix the transparent mechanism 5 .

[0045] Through the above technical solution, after the transparent plate 52 and the outer frame 51 in the utility model are inserted into the transparent cavity 12, the second limiting mechanism 9 can limit and fix the free edge of the outer frame 51, and at the same time, the second limiting mechanism 9 drives the second clamping mechanism 8 to clamp the outer frame 51, so that the transparent plate 52 and the outer frame 51 are fixed in the transparent cavity 12. The above process is quick and convenient, reducing the workload of workers.

[0046] like Figure 1-Figure 10As shown, in the present embodiment: a second limiting groove 32 and a driving groove 33 which are connected through-connected are provided in the two rods of the second support frame 3, the second limiting groove 32 and the driving groove 33 pass through the second support frame 3, and the width of the driving groove 33 is smaller than the second limiting groove 32, the second limiting mechanism 9 includes a second limiting plate 91 which is slidably connected between the two second limiting grooves 32, and driving blocks 92 which are respectively slidably connected in the two driving grooves 33, the two driving blocks 92 are fixedly connected to the side surface of the second limiting plate 91, and the top of the two driving blocks 92 are provided with a second inclined surface 93, and the driving block 92 drives the second clamping mechanism 8 through the second inclined surface 93 to clamp the transparent mechanism 5.

[0047] Through the above technical scheme, the width of the driving groove 33 in the utility model is smaller than the second limiting groove 32, which can prevent the driving block 92 from escaping from the driving groove 33, so that the driving block 92 can accurately drive the second clamping mechanism 8; the setting of the second inclined surface 93 can enable the driving block 92 to drive the second clamping mechanism 8 to rise.

[0048] like Figure 1-Figure 10 As shown, in this embodiment: the driving block 92 drives the second clamping mechanism 8 through the second inclined surface 93, and the second clamping mechanism 8 clamps the outer frame 51. At the same time, the second limiting plate 91 limits and fixes the free edge of the outer frame 51, and is inserted into the second groove 23 opened on the first support frame 2. The second groove 23 limits the second limiting plate 91 to prevent lateral movement; the second support frame 3 is threadedly connected with a screw 94, and the screw 94 is screwed into the second limiting plate 91 to fix the second limiting plate 91.

[0049] Through the above technical solution, the second limiting plate 91 in the utility model limits and fixes the free edge of the outer frame 51; the setting of the second groove 23 can prevent the second limiting plate 91 from lateral movement; the screw 94 can fix the second limiting plate 91.

[0050] like Figure 1-Figure 10 As shown, in this embodiment: a second clamping groove 31 which is connected with the driving groove 33 is opened on the second support frame 3, and the second clamping mechanism 8 is located in the second clamping groove 31, and includes a clamping plate 81, a first inclined surface 82 and a sliding rod 83, wherein: the clamping plate 81 is slidably connected in the second clamping groove 31, and can be vertically lifted and lowered along the second clamping groove 31; a first inclined surface 82 is opened at the end of the two clamping plates 81 close to the driving block 92, and the driving block 92 is slidably connected with the first inclined surface 82 through the second inclined surface 93 to drive the clamping plate 81 to rise vertically; a plurality of sliding rods 83 are provided and installed on the bottom surface of the second clamping groove 31, and the clamping plate 81 is sleeved on the sliding rod 83 and is lifted and lowered along the sliding rod 83.

[0051] Through the above technical scheme, the setting of the first inclined surface 82 in the utility model makes it convenient for the driving block 92 to drive the clamping plate 81 to rise vertically through the second inclined surface 93; the setting of the slide rod 83 can maintain the stability of the clamping plate 81 during the vertical rise process and prevent the clamping plate 81 from being offset.

[0052] The process of clamping and fixing the transparent mechanism 5 by the second clamping mechanism 8 and the second limiting mechanism 9 is as follows:

[0053] After the transparent plate 52 and the outer frame 51 are inserted into the transparent cavity 12, the second limiting plate 91 is driven to rise along the two second limiting grooves 32, and the two driving blocks 92 are driven to rise during the rising process. The two driving blocks 92 slide relative to the first inclined surface 82 through the second inclined surface 93 to drive the clamping plate 81 to rise vertically, and the clamping plate 81 can clamp and fix the outer frame 51;

[0054] At the same time, the second limiting plate 91 extends into the transparent cavity 12 to limit and fix the free end of the outer frame 51. As the second limiting plate 91 continues to rise, the second limiting plate 91 will be inserted into the second groove 23, and the second groove 23 will prevent the second limiting plate 91 from moving laterally.

[0055] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A ceiling panel with built-in lighting, comprising a housing (1), characterized in that: A first support frame (2) and a second support frame (3) are installed in the housing (1); a mounting cavity (11) is formed between the first support frame (2) and the inner wall of the housing (1); a mounting plate (4) is slidably connected in the mounting cavity (11); the mounting plate (4) is used to carry the light module; a transparent cavity (12) is formed between the second support frame (3) and the first support frame (2); a transparent mechanism (5) is slidably connected in the transparent cavity (12); the transparent mechanism (5) is used to project light; A first clamping mechanism (6) for clamping the mounting plate (4) and a first limiting mechanism (7) for fixing the mounting plate (4) are provided in the first support frame (2); when the transparent mechanism (5) is inserted into the transparent cavity (12), the first clamping mechanism (6) is driven to clamp the mounting plate (4), and the first limiting mechanism (7) is driven to fix the mounting plate (4); A second clamping mechanism (8) and a second limiting mechanism (9) are provided in the second support frame (3); the second clamping mechanism (8) is used to clamp the transparent mechanism (5), and the second limiting mechanism (9) is used to fix the transparent mechanism (5).

2. A ceiling panel with built-in lighting according to claim 1, characterized in that: The first support frame (2) and the second support frame (3) are both two support rods arranged in parallel, and the first support frame (2) and the second support frame (3) are parallel to each other.

3. A ceiling panel with built-in lighting according to claim 2, characterized in that: A second limiting groove (32) and a driving groove (33) are provided in the two rods of the second support frame (3), the second limiting groove (32) and the driving groove (33) pass through the second support frame (3), and the width of the driving groove (33) is smaller than that of the second limiting groove (32). The second limiting mechanism (9) comprises a second limiting plate (91) slidably connected between the two second limiting grooves (32), and a driving block (92) slidably connected to the two driving grooves (33), respectively. The two driving blocks (92) are fixedly connected to the side of the second limiting plate (91), and the tops of the two driving blocks (92) are provided with a second inclined surface (93). The driving block (92) drives the second clamping mechanism (8) through the second inclined surface (93) to clamp the transparent mechanism (5).

4. A ceiling panel with built-in lighting according to claim 3, characterized in that: The transparent mechanism (5) comprises an outer frame (51) and a transparent plate (52); the transparent plate (52) can transmit light and is fixedly mounted on the inner circle of the outer frame (51); the thickness of the transparent plate (52) is smaller than that of the outer frame (51); The driving block (92) drives the second clamping mechanism (8) via the second inclined surface (93), and the second clamping mechanism (8) clamps the outer frame (51). At the same time, the second limiting plate (91) limits and fixes the free edge of the outer frame (51) and is inserted into a second groove (23) provided on the first support frame (2). The second groove (23) limits the second limiting plate (91) to prevent lateral movement. The second support frame (3) is threadedly connected with a screw (94), and the screw (94) is screwed into the second limiting plate (91) to fix the second limiting plate (91).

5. A ceiling panel with built-in lighting according to claim 4, characterized in that: The second support frame (3) is provided with a second clamping groove (31) which is in communication with the driving groove (33); the second clamping mechanism (8) is located in the second clamping groove (31) and comprises a clamping plate (81), a first inclined surface (82) and a sliding rod (83), wherein: The clamping plate (81) is slidably connected in the second clamping groove (31) and can be vertically lifted and lowered along the second clamping groove (31); The ends of the two clamping plates (81) close to the driving block (92) are provided with a first inclined surface (82), and the driving block (92) is slidably connected to the first inclined surface (82) via a second inclined surface (93) to drive the clamping plates (81) to rise vertically; The sliding rod (83) is provided with a plurality of parts and is mounted on the bottom surface of the second clamping groove (31); the clamping plate (81) is sleeved on the sliding rod (83) and is lifted and lowered along the sliding rod (83).

6. A ceiling panel with built-in lighting according to claim 5, characterized in that: The two rods of the first support frame (2) are provided with first limiting grooves (22), and the first limiting mechanism (7) comprises a lifting block (71), a second arc-shaped surface (72) and a first limiting plate (73), wherein: The first limiting plate (73) is mounted on the upper end of the lifting block (71) and has a thickness less than that of the lifting block (71); the first limiting plate (73) passes through the first limiting groove (22) and the mounting cavity (11), and is inserted into a first groove (13) provided in the housing (1) to limit and fix the mounting plate (4) installed in place; The lifting block (71) matches the first limiting groove (22), and the lifting block (71) is inserted into the first limiting groove (22) to maintain the stability of the first limiting plate (73); The second arc-shaped surface (72) is provided on the bottom surface of the lifting block (71) so as to be driven by the outer frame (51).

7. A ceiling panel with built-in lighting according to claim 6, characterized in that: A plurality of first clamping grooves (21) are formed on the first support frame (2); the first clamping grooves (21) are wider at the upper end and narrower at the lower end, and pass through the first support frame (2); The first clamping mechanism (6) comprises a clamping block (63) slidably connected to the upper end of the first clamping groove (21), and a lifting rod (61) fixedly mounted on the lower end of the clamping block (63); the lifting rod (61) is slidably inserted into the lower end of the first clamping groove (21); and a first arc-shaped surface (62) is formed at the bottom end of the lifting rod (61) so as to be driven by the outer frame (51).

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