Fixing structure of net rack and sound box

Abstract

The utility model discloses a net rack fixing structure and a sound box, the net rack fixing structure comprises a loudspeaker, a net rack, a casing, at least two gaskets and at least two fasteners, the net rack comprises a net cover and at least two connecting plates which are arranged on the net cover in a protruding mode, the net cover is provided with a plurality of net holes which are of a polygonal structure, the connecting plates are provided with hexagonal through holes, and the through holes are communicated with the casing. The bottom of the inner wall of each mesh is provided with a straight edge; the enclosure comprises a shell and at least two studs which are convexly arranged on the shell, the loudspeaker is mounted on the shell, the studs are of hexagonal structures, the enclosure is provided with at least two threaded holes, the threaded holes penetrate through the studs and extend towards the middle of the shell in a concave manner, the hexagonal studs penetrate through the hexagonal through holes, and the mesh enclosure covers the loudspeaker; the gasket is positioned on one side of the connecting plate away from the shell; the fastening piece penetrates through the gasket and then is connected with the threaded hole, the included angle formed by the straight edge and one outer side wall of the machine shell is 90 + / -1 degrees, large inclination cannot be generated, and the requirement of the loudspeaker box for the position of the net rack is fully met.

Description

Technical Field

[0001] The utility model relates to the technical field of sound box structures, in particular to a grid fixing structure and a sound box. Background Art

[0002] The function of the speaker is to convert audio electrical energy into corresponding sound energy and radiate it into space. It is an extremely important component of the sound system and is responsible for converting electrical signals into sound signals for direct listening by human ears. As the market's requirements for the appearance of speakers become higher and higher, the mesh holes on the iron mesh commonly used for speakers on the market are mostly circular holes. Iron mesh with circular mesh holes can no longer meet the relevant requirements. Various distinctive iron meshes have emerged one after another. Later, iron meshes with hexagonal mesh holes appeared on the market.

[0003] However, after the existing hexagonal mesh iron net is installed on the outer shell of the speaker, since screws are passed through the annular gasket and the round holes on the side of the iron net to connect with the threaded holes in the outer shell, the diameter of the round holes is much larger than the outer diameter of the screws. The hexagonal mesh iron net has six edges in its mesh holes. The angle formed by the straight edge at the bottom of the iron net and the straight edge of the reference related to the periphery of the speaker cannot be close to 90 degrees or 180 degrees, which will produce a large tilt. After mass assembly of speakers, such an assembly structure will seriously reduce the grade of the speaker products. Utility Model Content

[0004] The utility model aims to provide a grid fixing structure and a speaker, so as to solve the technical problem that after the existing hexagonal mesh iron net is installed on the shell of the speaker, due to the method of connecting the screws through the annular gasket and the round holes on the side of the iron net with the threaded holes in the shell, the aperture of the round hole is much larger than the outer diameter of the screw, and the angle formed by the straight edge of the bottom of the hexagonal mesh iron net and the straight edge of the reference related to the periphery of the speaker cannot be close to 90 degrees or 180 degrees, which will produce a large inclination. After a large number of speaker assemblies, such an assembly structure will seriously reduce the grade of the speaker products.

[0005] The utility model provides a fixing structure of a grid, comprising:

[0006] speaker;

[0007] A mesh frame, comprising a mesh cover and at least two connecting plates protruding from the mesh cover, wherein the mesh cover is provided with a plurality of mesh holes of a polygonal structure, the connecting plates are provided with perforations of a hexagonal structure, and the bottom of the inner wall of the mesh hole has a straight edge;

[0008] The housing comprises an outer shell and at least two studs convexly disposed on the outer shell, the speaker is mounted on the outer shell, the stud is a hexagonal structure, the housing is provided with at least two threaded holes, the threaded holes penetrate the studs and extend concavely toward the middle of the outer shell, the hexagonal studs are disposed in the hexagonal through holes, and the mesh covers the speaker;

[0009] at least two washers, the washers being located on a side of the connecting plate away from the housing;

[0010] At least two fasteners are provided, wherein the fasteners are connected to the threaded holes after passing through the washers, and an angle formed by the straight edge and an outer side wall of the housing is 90±1 degrees.

[0011] Furthermore, the mesh is a hexagonal structure.

[0012] Furthermore, the mesh cover includes a mesh plate and two arc-shaped enclosures, the arc-shaped enclosure and the connecting plate are both protruding from the edge of the mesh plate, the connecting plate is an "L"-shaped structure, the connecting plate, the studs, the washers and the fasteners are all two in number, the connecting plate is located between the two arc-shaped enclosures, the mesh plate covers the speaker, and the mesh holes are arranged on the mesh plate.

[0013] Furthermore, the arc-shaped enclosure includes a limit plate and two arc-shaped baffles, the limit plate and the connecting plate are both located between the two corresponding arc-shaped baffles, the limit plate is provided with a limit hole, the outer shell is provided with a clamping block, and the clamping block is clamped in the limit hole.

[0014] Furthermore, the shell includes a boss, a bottom shell of a square structure and the block protruding from the boss, the bottom shell is provided with a receiving groove and four notch grooves all connected to the receiving groove, the boss is protruding from the bottom wall of the receiving groove, the speaker is installed on the boss, the arc-shaped baffle is inserted into the receiving groove and is located between the boss and the inner side wall of the receiving groove, the two studs are respectively protruding from the bottom walls of two of the notch grooves, the two limit plates are respectively located in the other two notch grooves, and the angle formed by the straight edge and an outer side wall of the bottom shell is 90±1 degrees.

[0015] Furthermore, the shell also includes a plurality of arc-shaped ridges, a plurality of first blocks and a plurality of second blocks, the arc-shaped ridges are convexly arranged on the inner side wall of the accommodating groove, a plurality of the first blocks are convexly arranged on each of the arc-shaped ridges, a plurality of the second blocks are convexly arranged on the outer side wall of the boss, and the arc-shaped baffle is clamped between the first blocks and the second blocks.

[0016] Furthermore, the fixing structure of the grid also includes a shoulder strap, which includes a soft adhesive tape, a locking piece and a clamping head. The two ends of the soft adhesive tape are respectively provided with a first through hole and a second through hole. The outer shell and the speaker are combined to form a accommodating space. The outer shell is also provided with a mounting hole and a card slot. The mounting hole is connected to the accommodating space. The clamping head passes through the first through hole and is clamped with the card slot. The locking piece passes through the second through hole and is connected to the mounting hole.

[0017] Furthermore, the fixing structure of the grid also includes a pressing component, which includes an operating pad, a sealing cover and a hard rubber keyboard. The outer shell is also provided with an embedding hole connected to the accommodating space. The hard rubber keyboard and the sealing cover are both fixed in the accommodating space. The hard rubber keyboard includes a control panel and a plurality of buttons protruding from the control panel. The buttons and the speakers are both electrically connected to the control panel. One end of the operating pad is located in the accommodating space and is connected to the control panel through the sealing cover, and the other end is located in the embedding hole. The button is connected to the operating pad. The operating pad is provided with a plurality of marks. By pressing the mark, the corresponding button action can be driven.

[0018] Furthermore, the fixing structure of the grid also includes a protective cover, which is provided with a storage space and an avoidance hole connected to the storage space, the speaker, the grid, the casing, the gasket and the fastener are all located in the storage space, and the grid cover is arranged corresponding to the avoidance hole.

[0019] The utility model also provides a sound box, comprising the fixing structure of the grid frame as described above.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The grid of the utility model is provided with at least two hexagonal through holes, and the casing is provided with at least two hexagonal studs. The hexagonal through holes are used to replace the traditional round holes, and the hexagonal studs are used as limiting supports. When the hexagonal studs are penetrated into the hexagonal through holes and the fasteners are connected with the threaded holes after passing through the washers, the interval between the inner wall of the through holes and the outer wall of the studs becomes smaller. The fasteners squeeze the grid onto the casing through the washers, which can effectively limit the movement of the grid relative to the casing. The angle formed by the straight edge of the mesh and an outer side wall of the casing can reach 90±1 degrees, and no large tilt will occur, which fully guarantees the position requirements of the speaker products for the grid and can improve the grade of the speaker products. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a speaker provided in an embodiment of the utility model;

[0023] Figure 2 for Figure 1 Exploded diagram of

[0024] Figure 3 The structure of the speaker provided by the embodiment of the utility model after removing the cover is schematically shown. Figure 1 ;

[0025] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0026] Figure 5 for Figure 3 Exploded diagram of

[0027] Figure 6 A schematic diagram of the structure of the speaker provided by the embodiment of the utility model after the cover and the grid are removed;

[0028] Figure 7 for Figure 6 A partial enlarged schematic diagram of point B in the middle;

[0029] Figure 8 A schematic diagram of the structure of the grid provided in the embodiment of the utility model;

[0030] Fig. 9 The structure of the speaker provided by the embodiment of the utility model after removing the cover is schematically shown. Figure 2 ;

[0031] Fig.10 for Fig. 9 A cross-sectional view of

[0032] Fig.11 for Fig. 9 Exploded diagram.

[0033] In the figure:

[0034] 10. speaker; 20. grid frame; 21. mesh cover; 211. mesh; 2111. straight edge; 212. mesh plate; 213. arc-shaped enclosure; 2131. limit plate; 2132. arc-shaped baffle; 2133. limit hole; 22. connecting plate; 221. perforation; 30. housing; 31. shell; 311. block; 312. boss; 313. bottom shell; 3131. receiving groove; 3132. notch groove; 314. arc-shaped convex edge; 315. first block; 316. second block; 317. mounting hole; 318. slot; 319. embedding hole; 32 , stud; 321, threaded hole; 33, front shell; 34, rear shell; 40, gasket; 50, fastener; 60, shoulder strap; 61, soft tape; 611, first through hole; 612, second through hole; 62, locking piece; 63, clamp; 70, accommodating space; 80, pressing component; 81, operating pad; 811, mark; 82, sealing cover; 83, hard rubber keyboard; 831, control panel; 832, button; 90, sheath; 91, storage space; 92, avoidance hole; 93, first opening; 94, second opening; 100, rechargeable battery; 200, charging socket. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0036] See also Figures 1 to 8 As shown, an embodiment of the utility model discloses a grid fixing structure, which is mainly used in sound boxes. The grid fixing structure includes a speaker 10, a grid 20, a casing 30, at least two washers 40 and at least two fasteners 50. The grid 20 includes a mesh cover 21 and at least two connecting plates 22 protruding from the mesh cover 21. The connecting plates 22 are arranged on the edge of the mesh cover 21. The mesh cover 21 is provided with a plurality of mesh holes 211, which are all polygonal structures. The plurality of mesh holes 211 are distributed in an array. The connecting plates 22 are provided with perforations 221 of a hexagonal structure. The bottom of the inner wall of the mesh hole 211 has a straight edge 2111. The mesh hole 211 can be a hexagonal structure.

[0037] The housing 30 includes a housing 31 and at least two studs 32 both convexly disposed on the outer wall of the housing 31. The speaker 10 is mounted on the housing 31. The studs 32 are hexagonal columns. The housing 30 is provided with at least two threaded holes 321. The threaded holes 321 penetrate the studs 32 from a side of the studs 32 away from the housing 31 and extend toward the middle of the housing 31. The hexagonal studs 32 are disposed in the hexagonal through-holes 221. The grille 21 covers the speaker 10. The gasket 40 is an annular structure. The gasket 40 is located on the connecting plate. 22 is a side away from the outer shell 31, and the fastener 50 passes through the gasket 40 and is connected to the threaded hole 321. The fastener 50 squeezes the grid 20 on the casing 30 through the gasket 40. Combined with the relevant production process, the movement of the grid 20 relative to the casing 30 is effectively restricted, and the angle β formed by the straight edge 2111 in the mesh 211 and an outer side wall of the casing 30 is 90±1 degrees, which will not produce a large tilt, fully ensuring the position requirement of the speaker product for the grid 20, and can improve the grade of the speaker product. The fastener 50 can be a screw.

[0038] It should be noted that when the mesh 211 is a hexagon, the hexagonal mesh 211 has six sides, and we mainly look at two straight sides 2111, one of which is at the top of the hexagonal mesh 211, and the other is at the bottom of the hexagonal mesh 211. The two straight sides 2111 are arranged in parallel. Since the mesh 211 can also select a triangular structure, in order to facilitate the distinction from the triangular mesh 211, the straight sides 2111 mentioned in the mesh 211 in this embodiment refer to the bottom sides of the inner wall of the polygonal mesh 211.

[0039] In this embodiment, the mesh cover 21 includes a mesh plate 212 and two arc-shaped enclosures 213. The mesh plate 212 is circular. The arc-shaped enclosure 213 and the connecting plate 22 are both protruded on the edge of the mesh plate 212. The arc-shaped enclosure 213 and the connecting plate 22 are both perpendicular to the mesh plate 212. The connecting plate 22 is an "L"-shaped structure. The number of connecting plates 22, studs 32, washers 40 and fasteners 50 is consistent. The number of connecting plates 22, studs 32, washers 40 and fasteners 50 is two. The two connecting plates 22 are arranged at the two ends of the mesh plate 212 back to back. The connecting plate 22 is located between the two arc-shaped enclosures 213. The mesh plate 212 covers the speaker 10. Multiple mesh holes 211 are all arranged on the mesh plate 212. Of course, the number of connecting plates 22, studs 32, washers 40 and fasteners 50 may not be limited to two, and may be three, four or more.

[0040] The arc-shaped enclosure 213 includes a limit plate 2131 and two arc-shaped baffles 2132. The limit plate 2131 and the connecting plate 22 are both located between the corresponding two arc-shaped baffles 2132. At this time, the straight line formed by the two limit plates 2131 and the straight line formed by the two connecting plates 22 are in a "cross" structure. The limit plate 2131 is provided with a limit hole 2133, and the outer shell 31 is provided with a clamping block 311, which is clamped in the limit hole 2133 to limit and fix the grid 20.

[0041] The housing 31 includes a boss 312, a bottom shell 313 of a square structure, and the block 311 protruding from the boss 312. The bottom shell 313 is provided with a receiving groove 3131 and four notch grooves 3132 which are all connected to the receiving groove 3131. The notch grooves 3132 extend from the inner side wall of the receiving groove 3131 to the outer side wall of the bottom shell 313. The boss 312 is a circular structure. The boss 312 is protruding from the bottom wall of the receiving groove 3131. The speaker 10 is mounted on the boss 312. The arc-shaped baffle 2132 is inserted into the receiving groove 3131 and is located between the boss 312 and the inner side wall of the receiving groove 3131. The two studs 32 are respectively protruding from two of the notch grooves. On the bottom wall of the slot 3132, two limit plates 2131 are respectively located in the other two notched slots 3132. The angle β formed by the straight side 2111 of the mesh 211 and an outer side wall of the bottom shell 313 is 90±1 degrees. The positioning design of the hexagonal studs 32 on both sides and the hexagonal through-holes 221 cooperates with each other, and the design of the upper and lower blocks 311 and the limit holes 2133 limits the movement of the grid 20 in the XY direction and the rotation in the vertical Z direction, which fully guarantees the position requirements of the speaker appearance for the grid 20. The X direction is the length direction of the casing 30, the Y direction is the width direction of the casing 30, and the Z direction is the height direction of the casing 30.

[0042] In some embodiments, the shell 31 also includes a plurality of arcuate ridges 314, a plurality of first blocks 315 and a plurality of second blocks 316. The arcuate ridges 314 are protruded on the inner wall of the accommodating groove 3131. A plurality of first blocks 315 are protruded on each arcuate ridge 314. A plurality of second blocks 316 are protruded on the outer wall of the boss 312. The arcuate baffle 2132 is clamped between the first blocks 315 and the second blocks 316 so that the grid 20 can be more accurately fixed on the casing 30 to further ensure the dimensional tolerance requirements of the grid 20 on the casing 30.

[0043] Please read further Figure 1 , Figure 2 , Figure 5 as well as Figures 9 to 11In this embodiment, the fixing structure of the grid also includes a shoulder strap 60, which includes a soft adhesive tape 61, a locking piece 62 and a clamping head 63. The two ends of the soft adhesive tape 61 are respectively provided with a first through hole 611 and a second through hole 612. The shell 31 and the speaker 10 are enclosed to form a accommodating space 70. The shell 31 is also provided with a mounting hole 317 and a card slot 318. The mounting hole 317 is connected to the accommodating space 70. The clamping head 63 passes through the first through hole 611 and is clamped with the card slot 318. The locking piece 62 passes through the second through hole 612 and is connected with the mounting hole 317. A person can lift the speaker by hand through the shoulder strap 60. Of course, after removing the clamping head 63, one end of the soft adhesive tape 61 can also be directly lifted by hand. The soft adhesive tape 61 can be rotatably connected to the casing 30 through the locking piece 62, so as to change the way to lift the speaker, thereby enhancing the convenience of using the shoulder strap 60. The locking piece 62 is a male and female buckle.

[0044] The fixed structure of the grid also includes a pressing component 80, which includes an operating pad 81, a sealing cover 82 and a hard rubber keyboard 83. The housing 31 is also provided with an embedding hole 319 connected to the accommodating space 70. The hard rubber keyboard 83 and the sealing cover 82 are both fixed in the accommodating space 70. The hard rubber keyboard 83 includes a control panel 831 and a plurality of buttons 832 protruding from the control panel 831. The buttons 832 and the speaker 10 are both electrically connected to the control panel 831. One end of the operating pad 81 is located in the accommodating space 70 and is connected to the control panel 831 through the sealing cover 82, and the other end is located in the embedding hole 319. The button 832 is connected to the operating pad 81. The pressing component 80 can be installed on the housing 30 in a nesting doll manner. The operating pad 81 is provided with a plurality of marks 811, and the plurality of marks 811 correspond to each button 832 respectively. By pressing the mark 811, the corresponding button 832 can be driven to act, so as to control the speaker 10.

[0045] The fixing structure of the grid also includes a protective cover 90, which is provided with a storage space 91, an avoidance hole 92, a first opening 93 and a second opening 94. The avoidance hole 92, the first opening 93 and the second opening 94 are all connected to the storage space 91. The speaker 10, the grid 20, the housing 30, the gasket 40, the fastener 50, the shoulder strap 60 and the pressing assembly 80 are all located in the storage space 91. The grid cover 21 is arranged corresponding to the avoidance hole 92, the shoulder strap 60 is arranged corresponding to the first opening 93, and the pressing assembly 80 is arranged corresponding to the second opening 94. The protective cover 90 is made of silicone material and has an anti-fall function.

[0046] The fixed structure of the grid also includes a rechargeable battery 100 and a charging socket 200. The rechargeable battery 100 is installed in the accommodating space 70. One end of the charging socket 200 is located in the accommodating space 70 and the other end is located on the socket of the casing 30. The rechargeable battery 100 and the charging socket 200 are both electrically connected to the control board 831. The rechargeable battery 100 can supply power to the speaker 10, and the charging socket 200 can charge the rechargeable battery 100.

[0047] In some embodiments, the housing 30 includes a front housing 33 and a rear housing 34 snap-connected to the front housing 33, the speaker 10 is installed on the front housing 33, the embedding hole 319 and the stud 32 are both provided on the front housing 33, the mounting hole 317, the slot 318 and the jack are all provided on the rear housing 34, and the front housing 33, the rear housing 34 and the speaker 10 enclose the aforementioned accommodating space 70.

[0048] The utility model also discloses a sound box, comprising the fixing structure of the grid frame as described above.

[0049] The installation method of the speaker includes the following steps:

[0050] Step S101, assembling the pressing assembly 80, first assembling the operating pad 81, the sealing cover 82 and the hard plastic keyboard 83 together, then installing the pressing assembly 80 on the embedding hole 319 of the front shell 33 by a plurality of screws in a nesting doll-like manner, and also installing the speaker 10, the rechargeable battery 100 and the charging socket 200 on the front shell 33;

[0051] Step S102, assembling the shoulder strap 60, passing the clamp head 63 through the first through hole 611 in the soft tape 61 and clamping it with the clamping groove 318 in the rear shell 34, and passing the locking member 62 through the second through hole 612 in the soft tape 61 and connecting it with the mounting hole 317 in the rear shell 34;

[0052] Step S103, assembling the housing 30, assembling the front housing 33 assembled in step S101 and the rear housing 34 assembled in step S102, assembling them together by screws, and inserting the charging socket 200 into the socket of the rear housing 34;

[0053] Step S104, assembling the grid 20, inserting the hexagonal studs 32 in the housing 30 in step S103 into the hexagonal through-holes 221 in the grid 20, and at the same time, the blocks 311 on the housing 30 are respectively inserted into the limiting holes 2133 in the grid 20, and then the fasteners 50 pass through the washers 40 and are connected to the threaded holes 321 in the studs 32;

[0054] Step S105, assemble the sheath 90, and install the casing 30 assembled with the grid frame 20 in step S104 into the sheath 90, wherein the avoidance hole 92 in the sheath 90 is arranged corresponding to the mesh cover 21, the first opening 93 in the sheath 90 is arranged corresponding to the shoulder strap 60, and the second opening 94 in the sheath 90 is arranged corresponding to the operating pad 81.

[0055] In summary, the grid 20 of the utility model is provided with at least two hexagonal through holes 221, and the casing 30 is provided with at least two hexagonal studs 32. The hexagonal through holes 221 are used to replace the traditional round holes, and the hexagonal studs 32 are used as limiting supports. When the hexagonal studs 32 are penetrated into the hexagonal through holes 221 and the fasteners 50 are connected with the threaded holes 321 after passing through the washers 40, the interval between the inner wall of the through holes 221 and the outer wall of the studs 32 becomes smaller. The fasteners 50 squeeze the grid 20 on the casing 30 through the washers 40, which can effectively limit the movement of the grid 20 relative to the casing 30. The angle formed by the straight edge 2111 of the mesh 211 and an outer wall of the casing 30 can reach 90±1 degrees, and no large tilt will occur, which fully guarantees the position requirements of the speaker product for the grid 20 and can improve the grade of the speaker product.

[0056] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A fixed structure of a grid, characterized in that: include: speaker; A mesh frame, comprising a mesh cover and at least two connecting plates protruding from the mesh cover, wherein the mesh cover is provided with a plurality of mesh holes of a polygonal structure, the connecting plates are provided with perforations of a hexagonal structure, and the bottom of the inner wall of the mesh hole has a straight edge; The housing comprises an outer shell and at least two studs convexly disposed on the outer shell, the speaker is mounted on the outer shell, the stud is a hexagonal structure, the housing is provided with at least two threaded holes, the threaded holes penetrate the studs and extend concavely toward the middle of the outer shell, the hexagonal studs are disposed in the hexagonal through holes, and the mesh covers the speaker; at least two washers, the washers being located on a side of the connecting plate away from the housing; At least two fasteners are provided, wherein the fasteners are connected to the threaded holes after passing through the washers, and an angle formed by the straight edge and an outer side wall of the housing is 90±1 degrees.

2. The grid fixing structure according to claim 1, characterized in that: The mesh is a hexagonal structure.

3. The grid fixing structure according to claim 1, characterized in that: The mesh cover includes a mesh plate and two arc-shaped enclosures, the arc-shaped enclosures and the connecting plate are both protruding from the edge of the mesh plate, the connecting plate is an "L"-shaped structure, the connecting plate, the studs, the washers and the fasteners are all two in number, the connecting plate is located between the two arc-shaped enclosures, the mesh plate covers the speaker, and the mesh holes are arranged on the mesh plate.

4. The fixing structure of the grid according to claim 3 is characterized in that: The arc-shaped enclosure includes a limit plate and two arc-shaped baffles. The limit plate and the connecting plate are both located between the two corresponding arc-shaped baffles. The limit plate is provided with a limit hole. The shell is provided with a clamping block, and the clamping block is clamped in the limit hole.

5. The grid fixing structure according to claim 4, characterized in that: The shell includes a boss, a bottom shell of a square structure and the block protruding from the boss, the bottom shell is provided with a receiving groove and four notch grooves all connected to the receiving groove, the boss is protruding from the bottom wall of the receiving groove, the speaker is installed on the boss, the arc-shaped baffle is inserted into the receiving groove and is located between the boss and the inner side wall of the receiving groove, the two studs are respectively protruding from the bottom walls of two of the notch grooves, the two limit plates are respectively located in the other two notch grooves, and the angle formed by the straight edge and an outer side wall of the bottom shell is 90±1 degrees.

6. The fixing structure of the grid according to claim 5, characterized in that: The shell also includes a plurality of arcuate ridges, a plurality of first blocks and a plurality of second blocks. The arcuate ridges are convexly arranged on the inner side wall of the accommodating groove, a plurality of the first blocks are convexly arranged on each of the arcuate ridges, a plurality of the second blocks are convexly arranged on the outer side wall of the boss, and the arcuate baffle is clamped between the first blocks and the second blocks.

7. The grid fixing structure according to claim 1, characterized in that: The fixing structure of the grid also includes a shoulder strap, which includes a soft adhesive tape, a locking piece and a clamping head. The two ends of the soft adhesive tape are respectively provided with a first through hole and a second through hole. The shell and the speaker are enclosed to form a accommodating space. The shell is also provided with a mounting hole and a card slot. The mounting hole is connected to the accommodating space. The clamping head passes through the first through hole and is clamped with the card slot. The locking piece passes through the second through hole and is connected to the mounting hole.

8. The grid fixing structure according to claim 7, characterized in that: The fixing structure of the grid also includes a pressing component, which includes an operating pad, a sealing cover and a hard rubber keyboard. The shell is also provided with an embedding hole connected to the accommodating space. The hard rubber keyboard and the sealing cover are both fixed in the accommodating space. The hard rubber keyboard includes a control panel and a plurality of buttons protruding from the control panel. The buttons and the speaker are both electrically connected to the control panel. One end of the operating pad is located in the accommodating space and is connected to the control panel through the sealing cover, and the other end is located in the embedding hole. The button is connected to the operating pad. The operating pad is provided with a plurality of marks. By pressing the mark, the corresponding button action can be driven.

9. The grid fixing structure according to claim 1, characterized in that: The fixing structure of the grid also includes a sheath, which is provided with a storage space and an avoidance hole connected to the storage space. The speaker, the grid, the housing, the gasket and the fastener are all located in the storage space, and the mesh cover is arranged corresponding to the avoidance hole.

10. A sound box, characterized in that: A fixing structure comprising a grid as described in any one of claims 1 to 9.

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