Household coiled material cutter

Abstract

The household coiled material cutter comprises a bottom box, a rotating shaft, an upper cover assembly, two sets of fixing bases, suction cup pieces and handles, the bottom box comprises a bottom wall and side walls, the two ends of the bottom wall are each provided with a suction cup base, and receding grooves are formed in the positions, corresponding to the suction cup bases, of the side walls; a supporting ring is formed on the lower portion of the sucker seat, a through hole is formed in the middle, and a fulcrum contact face is formed on the upper side face. The two fixed seats are detachably arranged in the accommodating cavity of the bottom box and are respectively provided with accommodating grooves communicated with the avoiding grooves; shaft holes are formed in the other sides of the two fixed seats; the sucker piece comprises a flexible disc and a connecting rod, the handle is rotatably connected with the upper end of the connecting rod and movably abuts against the fulcrum contact face, and the handle is located in the receding groove and the containing groove in the buckled state. The two sets of suction cup devices are arranged, the fixing base in the bottom box is used for installing the rotating shaft and containing the handle at the same time, and using and assembling convenience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of coil cutting devices, and in particular to a household coil cutter. Background Art

[0002] In daily life, people often need to use sheets, such as cling film, dust-proof film, toilet paper, etc. In order to meet the needs of cutting and storage at the same time, the prior art proposes a household roll material cutter, including a bottom box, a rotating shaft and an upper cover assembly, the upper cover assembly including a cover body and a cutting module, the bottom box has a cavity open upward, the cover body covers the upper opening of the cavity to form a storage space for the roll material, the roll material is wound on the rotating shaft for easy unwinding, and the joint of the cover body and the bottom box is provided with a discharge port connected to the cavity. When unwinding, the roll material can be pulled out through the discharge port, and then cut to the required length using the cutting module. However, the existing household roll material cutter needs to be held in hand or adhered to a fixed position using a self-adhesive sticker when in use. In addition, the shaft hole adapted to the rotating shaft is usually opened on the side wall of the bottom box. Therefore, the existing household roll material cutter needs to be improved in terms of ease of use and assembly convenience. Utility Model Content

[0003] The main purpose of the present application is to provide a household coil cutter, aiming to solve the technical problem that the existing household coil cutters are less convenient to use and assemble.

[0004] To achieve the above-mentioned purpose, the household roll material cutter proposed in the present application comprises a bottom box, a rotating shaft and an upper cover assembly, wherein the upper cover assembly comprises a cover body and a cutting module, the bottom box comprises a bottom wall and a side wall enclosing a cavity, suction cup seats are respectively arranged at both ends of the bottom wall, and the side wall is provided with a avoidance groove corresponding to the suction cup seat;

[0005] The household coil cutter also includes two sets of fixing seats, a suction cup and a handle; wherein,

[0006] The suction cup seat is formed with a support ring at the bottom, a through hole at the middle, and a fulcrum contact surface at the upper side;

[0007] The two fixing seats are both detachably mounted in the accommodating cavity and are respectively provided with accommodating grooves communicated with the avoidance grooves; the two fixing seats are provided with shaft holes for embedding the rotating shafts on the opposite sides thereof;

[0008] The suction cup member includes a flexible cup and a connecting rod extending upward from the middle of the flexible cup, wherein the flexible cup is located at the lower side of the suction cup seat, and the connecting rod is passed through the through hole and protrudes from the upper side of the suction cup seat;

[0009] The handle is rotatably connected to the upper end of the connecting rod and can movably abut against the fulcrum contact surface. The handle is located in the avoidance groove and the accommodating groove when in a buckled state.

[0010] Preferably, the shaft hole is open upward, and the width of the shaft hole is gradually expanded from bottom to top.

[0011] Preferably, the shaft hole has an upwardly disposed concave arc surface, and two opposite side wall surfaces of the shaft hole are formed with elastic limiting portions; the concave arc surface is rotatably matched with the rotating shaft, and the elastic limiting portion is clamped at the upper portion of the rotating shaft.

[0012] Preferably, the handle comprises a main body and a cam portion provided at one end of the main body, wherein the cam portion is rotatably connected to the upper end of the connecting rod and can movably abut against the fulcrum contact surface;

[0013] An active chamber is provided on the bottom surface of the fixing seat corresponding to the cam portion, and the active chamber is located below the shaft hole and communicated with the containing groove;

[0014] The main body includes a vertical portion and an inclined portion. When the handle is in a buckled state, the vertical portion is located in the accommodating groove, and the inclined portion and the cam portion are located in the movable chamber.

[0015] Preferably, the side wall comprises two oppositely arranged long side walls and two oppositely arranged short side walls, the short side walls are adjacent to the long side walls, and the two short side walls are provided with the avoidance grooves.

[0016] Preferably, the fixing seat is arranged at the corner position of the long side wall and the short side wall, and the outer side surface of the fixing seat is arranged adjacent to the short side wall and the two long side walls, and at least the lower part of the fixing seat abuts against the inner side surfaces of the short side wall and the two long side walls.

[0017] Preferably, the inner side surface of the long side wall is provided with a limiting rib extending in the up-down direction, and the facing surfaces of the two fixing seats are in contact with the limiting rib.

[0018] Preferably, the bottom surface of the fixing seat is provided with a plurality of buckles extending downward, and the bottom wall is provided with buckle holes adapted to the buckles.

[0019] Preferably, the upper part of the suction cup seat protrudes from the upper surface of the bottom wall, the bottom surface of the fixing seat is provided with a avoidance recess corresponding to the suction cup seat, a plurality of the buckles are located on the periphery of the avoidance recess, and a plurality of the card holes are located on the periphery of the suction cup seat.

[0020] Preferably, the fixing seat comprises a base and a head, the head protrudes from the top surface of the base, the head is adjacent to the side wall and deviates from the side of the base facing the other fixing seat;

[0021] The receiving groove is formed on the sides of the base and the head, and the shaft hole is formed on the base; the base is a hollow structure open downward; the head is in contact with the cover, and a gap is formed between the top surface of the base and the inner side surface of the cover;

[0022] The handle comprises a main body, a cam portion and a tail portion respectively arranged at two ends of the main body, and the tail portion is clamped on the upper surface of the cover body when the handle is in a buckled state.

[0023] The household coil cutter of the utility model is equipped with two groups of suction cup devices on the bottom box, so that it is convenient to fix and disassemble to fix to different positions; in addition, since the two fixing seats are detachably arranged relative to the bottom box, it is more convenient to form a complex shape to facilitate the assembly of the handle and the rotating shaft, and ensure that the handle switches between different working states. Specifically, when the handle is connected to the connecting rod, the fixing seat is separated from the bottom box, so that the handle can penetrate into the cavity of the bottom box through the avoidance groove, and there is a large operating space in the adjacent space of the end of the handle close to the suction cup seat; then, preferably, the rotating shaft can be pre-connected with the two fixing seats after loading the coil, that is, the two ends of the rotating shaft are respectively embedded in the shaft holes of the two fixing seats, and then the rotating shaft and the two fixing seats are installed into the cavity of the bottom box as a whole. In this way, when the handle is in the buckled state, the fixing seat can use the accommodating groove to accommodate the handle, so that the appearance of the household coil cutter is simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the household coil cutter of the utility model;

[0026] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the Chinese household coil cutter from another angle;

[0027] Figure 3 for Figure 1 A schematic diagram of an exploded structure of a coil cutter used in China;

[0028] Figure 4 for Figure 3 An enlarged structural diagram of the fixing seat on the left side of the middle;

[0029] Figure 5 for Figure 3 An enlarged structural diagram of the fixing seat on the middle right;

[0030] Figure 6 for Figure 3 An enlarged structural diagram of the middle handle and the suction cup assembly;

[0031] Figure 7 for Figure 1 A three-dimensional schematic diagram of the partial structure of the right end of the coil cutter for Chinese household use;

[0032] Figure 8 for Figure 7 A three-dimensional schematic diagram of the local structure from another angle;

[0033] Fig. 9 for Figure 7 Schematic diagram of the explosion structure of the local structure;

[0034] Fig.10 for Fig. 9 An enlarged structural diagram of the midsole box;

[0035] Fig.11 for Figure 7 A three-dimensional schematic diagram of the bottom view of the local structure in the middle;

[0036] Fig.12 for Figure 7 Schematic diagram of the exploded structure from the bottom perspective of the local structure;

[0037] Fig.13 for Figure 7 A top view of the local structure;

[0038] Fig.14 for Fig.13 A schematic diagram of the cross-sectional structure along line XIV-XIV;

[0039] Fig.15 for Fig.13 A schematic diagram of the cross-sectional structure along the XV-XV line;

[0040] Fig.16 for Fig.13 A side view schematic diagram of the local structure;

[0041] Fig.17 for Fig.16 Schematic diagram of the cross-sectional structure along line XVII-XVII.

[0042] Description of Figure Numbers:

[0043] Label name Label name Label name 100 Home coil cutters 171 Through Hole 44 Activity Room 10 Bottom Box 20 Shaft 45 Buckle 11 Cavity 30 Upper cover assembly 46 Avoidance recess 12 bottom wall 31 Cover 47 head 13 Card hole 32 Limit border 50 Suction cup parts 14 Sidewall 33 Cutting module 51 Flexible disk 15 Long side wall 34 guide 52 Connecting rod 151 Limiting ribs 35 Knives 60 handle 152 Discharge port 40 Fixed seat 61 Main body 16 Short sidewall 41 Storage tank 62 Vertical part 161 Avoid slot 42 Base 63 Inclined part 17 Suction cup holder 43 Shaft hole 64 Cam 18 Support ring 431 Concave arc surface 65 Tail 19 Fulcrum contact surface 432 Elastic limiter DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] Reference Figures 1 to 5 , Figure 7 , Fig. 9 , Fig.10 , Fig.13 as well as Fig.14 In one embodiment, the household roll material cutter 100 proposed in the present application includes a bottom box 10, a rotating shaft 20 and an upper cover assembly 30, the upper cover assembly 30 includes a cover body 31 and a cutting module 33, the bottom box 10 includes a bottom wall 12 and a side wall 14 enclosing a cavity 11, and suction cup seats 17 are respectively provided at both ends of the bottom wall 12, and a avoiding groove 161 is provided on the side wall 14 corresponding to the suction cup seat 17;

[0046] The household roll cutter 100 further includes two sets of fixing seats 40, a suction cup 50 and a handle 60; wherein,

[0047] A support ring 18 is formed at the lower part of the suction cup seat 17, a through hole 171 is provided in the middle part, and a fulcrum contact surface 19 is formed on the upper side surface;

[0048] The two fixing seats 40 are both detachably mounted in the cavity 11 and are respectively provided with a receiving groove 41 communicating with the avoiding groove 161; the two fixing seats 40 are provided with a shaft hole 43 for the rotating shaft 20 to be embedded on one side facing each other;

[0049] The suction cup member 50 includes a flexible cup 51 and a connecting rod 52 extending upward from the middle of the flexible cup 51. The flexible cup 51 is located at the lower side of the suction cup seat 17. The connecting rod 52 is passed through the through hole 171 and protrudes from the upper side of the suction cup seat 17.

[0050] The handle 60 is rotatably connected to the upper end of the connecting rod 52 and can movably abut against the fulcrum contact surface 19 . The handle 60 is located in the avoidance groove 161 and the accommodating groove 41 when in the buckled state.

[0051] In this embodiment, the bottom box 10 is used to play a supporting and protective role. For example, after the coil is placed in the cavity 11 of the bottom box 10, the pollution of the external environment can be reduced. The bottom box 10 can also support the cover body 31. The rotating shaft 20 can be a fixed component or a movable component. The rotating shaft 20 and one of the coils on the rotating shaft 20 can rotate. The cutting module 33 can adopt any suitable existing structure. For example, the cutting module 33 can be provided with a fixed tool 35 or a rolling tool 35. In this embodiment, the cutting module 33 includes a guide rail 34 and a tool 35 slidably mounted on the guide rail 34. The upper surface of the cover body 31 is convexly provided with a limiting frame 32, and the guide rail 34 is fixedly installed in the limiting frame 32. The joint between the cover body 31 and the bottom box 10 is provided with a discharge port 152 connected to the cavity 11, and the coil can be taken out through the discharge port 152 for cutting.

[0052] The suction cup seat 17 can provide protection for the flexible disc 51 of the suction cup member 50, and provide support for the suction cup member 50 and the handle 60. Specifically, the support ring 18 can contact the external support surface or be used to constrain the flexible disc 51 so that it can achieve more uniform deformation during the buckling process of the handle 60, thereby forming a more stable negative pressure chamber. The flexible disc 51 is usually made of flexible materials such as silicone and rubber. In order to better fit with the external support surface, adhesive materials such as self-adhesive tape can also be provided on the adsorption surface of the flexible disc 51 to enhance the stability of adsorption. The connecting rod 52 is usually rotatably connected to the handle 60 in a pivoted manner. Preferably, an independent hard material, such as a steel pin, is provided to connect the handle 60 and the connecting rod 52.

[0053] The household coil cutter 100 of the utility model is equipped with two sets of suction cup devices on the bottom box 10, so that it is convenient to fix and disassemble to fix to different positions; in addition, since the two fixing seats 40 are detachably arranged relative to the bottom box 10, it is more convenient to form a complex shape to facilitate the assembly of the handle 60 and the rotating shaft 20, and ensure that the handle 60 switches between different working states. Specifically, when the handle 60 is connected to the connecting rod 52, the fixing seat 40 is separated from the bottom box 10, so that the handle 60 can penetrate into the cavity 11 of the bottom box 10 through the avoidance groove 161, and there is a large operating space in the adjacent space of one end of the handle 60 close to the suction cup seat 17; then, further, the rotating shaft 20 can be pre-connected with the two fixing seats 40 after loading the coil, that is, the two ends of the rotating shaft 20 are respectively embedded in the shaft holes 43 of the two fixing seats 40, and then the rotating shaft 20 and the two fixing seats 40 are installed into the cavity 11 of the bottom box 10 as a whole. Thus, when the handle 60 is in the buckled state, the fixing base 40 can use the receiving groove 41 to accommodate the handle 60, so that the appearance of the household roll cutter 100 is simpler.

[0054] Further, refer to Figure 5 , Fig.13 as well as Fig.15 In one embodiment, the shaft hole 43 is open upward, and the width of the shaft hole 43 is gradually expanded from bottom to top. This can reduce the difficulty of inserting the rotating shaft 20 into the shaft hole 43.

[0055] Furthermore, the shaft hole 43 has an upwardly disposed concave arc surface 431, and elastic limiting portions 432 are formed on two opposing side walls 14 of the shaft hole 43; the concave arc surface 431 is rotatably matched with the rotating shaft 20, and the elastic limiting portion 432 is clamped on the upper part of the rotating shaft 20, thereby ensuring that the rotating shaft 20 can work stably without hindering the disassembly of the rotating shaft 20.

[0056] Further, refer to Figure 3 , Figure 6 , Figure 7 , Fig. 9 as well as Figures 11 to 14 In one embodiment, the handle 60 includes a main body 61 and a cam portion 64 provided at one end of the main body 61, the cam portion 64 is rotatably connected to the upper end of the connecting rod 52 and can be movably abutted against the fulcrum contact surface 19; the bottom surface of the fixed seat 40 is provided with an active chamber 44 corresponding to the cam portion 64, the active chamber 44 is located below the shaft hole 43 and is connected to the accommodating groove 41; the main body 61 includes a vertical portion 62 and an inclined portion 63, when the handle 60 is in the buckled state, the vertical portion 62 is located in the accommodating groove 41, and the inclined portion 63 and the cam portion 64 are located in the active chamber 44.

[0057] In this embodiment, by providing an active chamber 44 on the mounting portion and connecting the vertical portion 62 and the cam portion 64 via the inclined portion 63 , the flexible disk 51 can be installed more inwardly to achieve better concealment, thereby achieving a simpler visual appearance.

[0058] Further, refer to Figures 1 to 3 as well as Figures 7 to 17 In one embodiment, the side wall 14 includes two oppositely disposed long side walls 15 and two oppositely disposed short side walls 16 . The short side walls 16 are adjacent to the long side walls 15 , and the two short side walls 16 are provided with avoidance grooves 161 .

[0059] In this embodiment, since the handles 60 are located at both ends of the bottom box 10 in the length direction, the suction cup members 50 are correspondingly located at both ends of the bottom box 10 in the length direction. The two adsorption devices cooperate with each other to form a larger force arm, so the adsorption is more stable.

[0060] Furthermore, the fixing seat 40 is disposed at the corner position of the long side wall 15 and the short side wall 16 , and the outer side surface of the fixing seat 40 is disposed adjacent to the short side wall 16 and the two long side walls 15 , and at least the lower portion of the fixing seat 40 abuts against the inner side surfaces of the short side wall 16 and the two long side walls 15 .

[0061] In this embodiment, the fixing seat 40 directly uses the inner wall surface of the bottom box 10 to achieve positioning, which not only has a simple structure but also is not prone to shaking.

[0062] Further, please refer again to Figure 3 , Figures 8 to 10 , Fig.16 and Fig.17 In one embodiment, the inner side surface of the long side wall 15 is provided with a limiting rib 151 extending in the up-down direction, and the facing sides of the two fixing seats 40 abut against the limiting rib 151. In this embodiment, the limiting rib 151 can prevent the two fixing seats 40 from moving in a direction approaching each other, so that the axial gap between the rotating shaft 20 and the fixing seat 40 is more easily ensured to be within a preset range, and then it is easier to ensure that the rotating shaft 20 rotates smoothly.

[0063] Further, please refer again to 3 to Figure 5 , Figures 9 to 12 In one embodiment, the bottom surface of the fixing seat 40 is provided with a plurality of buckles 45 extending downward, and the bottom wall 12 is provided with a buckle hole 13 adapted to the buckle 45. In this way, the fixing seat 40 can be fixed without screws and quickly assembled.

[0064] Furthermore, the upper portion of the suction cup seat 17 protrudes from the upper surface of the bottom wall 12, and the bottom surface of the fixing seat 40 is provided with a position-avoiding recess 46 corresponding to the suction cup seat 17, a plurality of buckles 45 are located on the periphery of the position-avoiding recess 46, and a plurality of clamping holes 13 are located on the periphery of the suction cup seat 17. In this embodiment, the buckles 45 and the clamping holes 13 are provided to surround the suction cup seat 17, so that a more stable detachable connection can be formed, and the fixing seat 40 is provided with the position-avoiding recess 46 corresponding to the suction cup seat 17, so that the matching structure is more compact.

[0065] Further, please refer again to Figures 4 to 7 , Fig. 9 , Fig.11 ,as well as Figures 13 to 15 In one embodiment, the fixing seat 40 includes a base 42 and a head 47, the head 47 protrudes from the top surface of the base 42, the head 47 is adjacent to the side wall 14 and deviates from the side of the base 42 facing the other fixing seat 40;

[0066] The receiving groove 41 is formed on the sides of the base 42 and the head 47, and the shaft hole 43 is formed on the base 42; the base 42 is a hollow structure open downward; the head 47 is in contact with the cover 31, and a gap is formed between the top surface of the base 42 and the inner side surface of the cover 31;

[0067] The handle 60 includes a main body 61 , cam portions 64 and a tail portion 65 respectively disposed at two ends of the main body 61 . When the handle 60 is in a buckled state, the tail portion 65 is engaged with the upper surface of the cover 31 .

[0068] In this embodiment, the tail 65 of the handle 60 is buckled with the cover 31 to not only fix the cover 31 but also press the fixing seat 40, because the head 47 of the fixing seat 40 is in contact with the lower surface of the cover 31. The head 47 deviates from the base 42 and faces the side of another fixing seat 40, so that the shaft hole 43 can be better opened upward, or the shaft hole 43 can be set to have a larger axial length, so that the rotating shaft 20 can be provided with a larger redundant space for axial expansion and contraction to further improve the convenience of assembly.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A household coil cutter, comprising a bottom box, a rotating shaft and an upper cover assembly, wherein the upper cover assembly comprises a cover body and a cutting module, characterized in that: The bottom box comprises a bottom wall and a side wall which enclose a cavity, two ends of the bottom wall are respectively provided with suction cup seats, and the side wall is provided with avoidance grooves corresponding to the suction cup seats; The household coil cutter also includes two sets of fixing seats, a suction cup and a handle; wherein, The suction cup seat is formed with a support ring at the bottom, a through hole at the middle, and a fulcrum contact surface at the upper side; The two fixing seats are both detachably mounted in the accommodating cavity and are respectively provided with accommodating grooves communicated with the avoidance grooves; the two fixing seats are provided with shaft holes for embedding the rotating shafts on the opposite sides thereof; The suction cup member includes a flexible cup and a connecting rod extending upward from the middle of the flexible cup, wherein the flexible cup is located at the lower side of the suction cup seat, and the connecting rod is passed through the through hole and protrudes from the upper side of the suction cup seat; The handle is rotatably connected to the upper end of the connecting rod and can movably abut against the fulcrum contact surface. The handle is located in the avoidance groove and the accommodating groove when in a buckled state.

2. The household coil cutter according to claim 1, characterized in that: The shaft hole is open upward, and the width of the shaft hole is gradually expanded from bottom to top.

3. The household coil cutter according to claim 2, characterized in that: The shaft hole has an upwardly disposed concave arc surface, and two opposite side wall surfaces of the shaft hole are formed with elastic limiting portions; the concave arc surface is rotatably matched with the rotating shaft, and the elastic limiting portion is clamped on the upper portion of the rotating shaft.

4. The household coil cutter according to any one of claims 1 to 3, characterized in that: The handle comprises a main body and a cam portion provided at one end of the main body, wherein the cam portion is rotatably connected to the upper end of the connecting rod and can movably abut against the fulcrum contact surface; An active chamber is provided on the bottom surface of the fixing seat corresponding to the cam portion, and the active chamber is located below the shaft hole and communicated with the containing groove; The main body includes a vertical portion and an inclined portion. When the handle is in a buckled state, the vertical portion is located in the accommodating groove, and the inclined portion and the cam portion are located in the movable chamber.

5. The household coil cutter according to claim 1, characterized in that: The side wall comprises two oppositely arranged long side walls and two oppositely arranged short side walls, the short side walls are adjacent to the long side walls, and the two short side walls are provided with the avoidance grooves.

6. The household coil cutter according to claim 5, characterized in that: The fixing seat is arranged at the corner position of the long side wall and the short side wall, and the outer side surface of the fixing seat is arranged adjacent to the short side wall and the two long side walls, and at least the lower part of the fixing seat abuts against the inner side surfaces of the short side wall and the two long side walls.

7. The household coil cutter according to claim 6, characterized in that: The inner side surface of the long side wall is provided with a limiting rib extending in the up-down direction, and the facing sides of the two fixing seats are in contact with the limiting rib.

8. The household coil cutter according to any one of claims 5 to 7, characterized in that: The bottom surface of the fixing seat is provided with a plurality of buckles extending downward, and the bottom wall is provided with buckle holes adapted to the buckles.

9. The household coil cutter according to claim 8, characterized in that: The upper part of the suction cup seat protrudes from the upper surface of the bottom wall, and the bottom surface of the fixing seat is provided with a avoidance recess corresponding to the suction cup seat, a plurality of the buckles are located on the periphery of the avoidance recess, and a plurality of the clamping holes are located on the periphery of the suction cup seat.

10. The household coil cutter according to any one of claims 1-3, 5-7, characterized in that: The fixing seat comprises a base and a head, wherein the head protrudes from the top surface of the base, and the head is adjacent to the side wall and deviates from the side of the base facing the other fixing seat; The receiving groove is formed on the sides of the base and the head, and the shaft hole is formed on the base; the base is a hollow structure open downward; the head is in contact with the cover, and a gap is formed between the top surface of the base and the inner side surface of the cover; The handle comprises a main body, a cam portion and a tail portion respectively arranged at two ends of the main body, and the tail portion is clamped on the upper surface of the cover body when the handle is in a buckled state.

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