PCB fixing structure and sound box

Abstract

The utility model discloses a PCB board fixing structure and a sound box, the PCB board fixing structure comprises a PCB board, a front shell and a rear shell, the front shell comprises a first shell body and a first limiting assembly arranged on the first shell body in a protruding mode, and the first limiting assembly and the first shell body enclose to form a first slot; the end, away from the first shell, of the first limiting assembly is provided with a guide-in face which is obliquely arranged and used for allowing the PCB to be quickly inserted into the first insertion groove. The rear shell comprises a second shell body and a second limiting assembly arranged on the second shell body in a protruding mode, the second limiting assembly and the second shell body define a second inserting groove, the first shell body and the second shell body are connected in a clamped mode and define a containing space, and the first limiting assembly and the second limiting assembly are both located in the containing space. The first slot and the second slot are both communicated with the accommodating space, the PCB is located in the accommodating space, the two ends of the PCB are clamped and inserted into the first slot and the second slot respectively, and the PCB is easy to assemble by means of the characteristic that the leading-in face is inclined.

Description

Technical Field

[0001] The utility model relates to the technical field of speaker structures, in particular to a PCB board fixing structure and a speaker. Background Art

[0002] PCBs (Printed Circuit Boards) provide electrical connections for electronic components. Their main advantage is that they can reduce wiring and assembly errors, improve automation levels and production efficiency. Currently, PCBs are widely used in equipment in the fields of security, communications, and computers. When fixing the PCB in existing speakers, it is generally necessary to use special screws to fix it to the studs on the front shell.

[0003] However, this method of fixing the PCB board is time-consuming and labor-intensive, and will increase labor and material costs. Utility Model Content

[0004] The utility model provides a PCB board fixing structure and a speaker, aiming to solve the technical problem that in existing speakers, when fixing the PCB board, special screws are generally required to fix it to the studs of the front shell. This method of fixing the PCB board is time-consuming and labor-intensive, and will increase labor and material costs.

[0005] The utility model provides a PCB board fixing structure, comprising:

[0006] PCB board;

[0007] The front housing includes a first housing and a first stopper assembly protruding from the first housing, wherein the first stopper assembly and the first housing together form a first slot, and an end of the first stopper assembly away from the first housing has an inclined guide surface for quickly inserting the PCB into the first slot;

[0008] The back shell includes a second shell and a second limiting assembly protruding from the second shell. The second limiting assembly and the second shell are combined to form a second slot. The first shell and the second shell are snap-connected and combined to form a accommodating space. The first limiting assembly and the second limiting assembly are both located in the accommodating space. The first slot and the second slot are both connected to the accommodating space. The PCB board is located in the accommodating space, and the two ends of the PCB board are respectively inserted into the first slot and the second slot.

[0009] Furthermore, the first limiting assembly includes a first stopper and a second stopper, the first stopper and the second stopper are both protruding from the first shell, the second stopper is located below the first stopper, the first stopper, the second stopper and part of the first shell are combined to form the first slot, the introduction surface is provided on the second stopper, and the distance between the introduction surface and the outer side wall of the first shell gradually increases from near the top of the front shell to near the bottom of the front shell.

[0010] Furthermore, the first stopper includes a first support plate and a plurality of stoppers protruding from a surface of the first support plate facing the second stopper, and the first support plate and the stoppers are protruding from the inner wall of the first shell;

[0011] The second stopper includes a second support plate and a plurality of baffles that are protruded from the second support plate on the side facing the first stopper. The inner side wall of the first shell is provided with a groove that is connected to the accommodating space. The second support plate and the baffle are both protruded from the bottom wall of the groove. A notch groove is provided at one end of the baffle away from the second support plate. The inner walls of each notch groove, each baffle and part of the first shell are enclosed to form the first slot, and each baffle is enclosed to form the introduction surface.

[0012] Furthermore, the second limiting assembly includes two positioning blocks both protruding from the second shell, and the two positioning blocks are each provided with a positioning cavity. The two positioning cavities are arranged opposite to each other, and the inner walls of the two positioning cavities and a portion of the second shell are enclosed to form the second slot.

[0013] Furthermore, the PCB board fixing structure also includes a buffer pad, which is installed on one end of the PCB board, and the PCB board is inserted into the first slot through the buffer pad.

[0014] Furthermore, the PCB board fixing structure also includes a function key and a plurality of first fasteners. The front shell is penetrated by a key hole and a plurality of first through-holes. Both the first through-hole and the key hole are connected to the accommodating space. The function key is provided with a plurality of first threaded holes. One end of the function key is located in the accommodating space and connected to the PCB board, and the other end is located in the key hole. The first fastener passes through the first through-hole and is connected to the first threaded hole.

[0015] Furthermore, the function key includes an operation group pad, a sealing cover, a lower cover and a sealing pad, the sealing cover, the lower cover and the sealing pad are all located in the accommodating space, the PCB board includes a control panel and a plurality of buttons all mounted on the control panel, the operation group pad is provided with a plurality of marks, one end of the operation group pad having the mark is located in the key hole, the other end is located in the accommodating space and is connected to the sealing cover, the sealing cover, the sealing pad, the control panel and the lower cover are enclosed to form a storage bin, the button is located in the storage bin, the sealing cover has a plurality of support rods, each of the marks is respectively arranged to correspond to each of the buttons through each of the support rods, and by pressing the mark, the corresponding button action can be driven by the corresponding support rod, the operation group pad is provided with a plurality of second through-holes, the first threaded hole is provided on the sealing cover, the first fastener passes through the first through-hole and the second through-hole in sequence and is connected to the first threaded hole, and the two ends of the control panel are respectively engaged with the first slot and the second slot.

[0016] Furthermore, the sealing gasket includes a connecting pad body, a first U-shaped pad body and a second U-shaped pad body arranged parallel to the first U-shaped pad body, the first U-shaped pad body is clamped between the sealing cover and the control panel, the second U-shaped pad body is clamped between the lower cover and the control panel, one end of the connecting pad body is connected to the first U-shaped pad body, and the other end is connected to the second U-shaped pad body.

[0017] Furthermore, the function key also includes multiple second fasteners, the sealing cover is also provided with multiple third perforations, the first U-shaped pad is provided with multiple fourth perforations, the control panel is provided with multiple fifth perforations, the second U-shaped pad is provided with multiple sixth perforations, and the lower cover is provided with multiple second threaded holes, and the second fastener passes through the third perforation, the fourth perforation, the fifth perforation and the sixth perforation in sequence and is connected to the second threaded hole.

[0018] The utility model also provides a speaker, comprising the PCB board fixing structure as described above.

[0019] Compared with the prior art, the beneficial effects of the present invention include at least:

[0020] In the present invention, the first limit assembly has an inclined guide surface at one end away from the first housing. The guide surface is similar to a slide structure. The PCB board fixing structure can fully utilize the inclined feature of the guide surface and apply it to the design. After one end of the PCB board is inserted into the second slot of the rear housing, the other end of the PCB board can be quickly inserted into the first slot of the front housing through the guide surface. This makes the PCB board assembly simple and easy to operate, saving time and effort. No special screws are required for fixing, which can save labor and material costs, achieve the purpose of reducing costs and increasing efficiency, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a PCB board fixing structure provided in an embodiment of the present utility model;

[0022] Figure 2 for Figure 1 Exploded diagram;

[0023] Figure 3 A schematic structural diagram of the front housing provided by an embodiment of the present utility model;

[0024] Figure 4 for Figure 3 A partial enlarged schematic diagram of point A in the middle;

[0025] Figure 5 A schematic structural diagram of a rear housing provided by an embodiment of the present utility model;

[0026] Figure 6 for Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0027] Figure 7 A cross-sectional view of the PCB board fixing structure provided in an embodiment of the present utility model Figure 1 ;

[0028] Figure 8 for Figure 7 A partial enlarged schematic diagram of point C in the middle;

[0029] Figure 9 A cross-sectional view of the PCB board fixing structure provided in an embodiment of the present utility model Figure 2 ;

[0030] Figure 10 for Figure 9 A partial enlarged schematic diagram of point D in the middle;

[0031] Figure 11 A schematic diagram of the structure of the function keys and PCB board provided in an embodiment of the present utility model;

[0032] Figure 12 for Figure 11 Exploded diagram;

[0033] Figure 13 A schematic structural diagram of a sealing cover provided in an embodiment of the present utility model;

[0034] Figure 14 A schematic structural diagram of a sealing gasket provided in an embodiment of the present utility model;

[0035] Figure 15 This is a schematic structural diagram of the soft rubber sleeve provided in an embodiment of the utility model.

[0036] In the picture:

[0037] 10. PCB board; 11. Control board; 12. Button; 13. LED light; 14. Fifth through-hole; 20. Front shell; 21. First shell; 211. Groove; 22. First limit assembly; 221. Lead-in surface; 222. First stopper; 2221. First support plate; 2222. Stopper; 223. Second stopper; 2231. Second support plate; 2232. Stopper; 2233. Notch; 23. First slot; 24. Keyhole; 2 5. First perforation; 26. Mounting hole; 27. Seventh perforation; 30. Back shell; 31. Second shell; 32. Second limit assembly; 321. Second slot; 322. Positioning block; 3221. Positioning cavity; 33. Mounting hole; 34. Sound hole; 35. Third threaded hole; 40. Accommodation space; 50. Buffer pad; 51. Card slot; 60. Function key; 61. Operation group pad; 611. Second perforation; 612. Translucent button; 613. Soft rubber cover; 614, hard press frame; 615, receiving groove; 616, first positioning groove; 617, second positioning groove; 62, sealing cover; 621, first threaded hole; 622, support rod; 623, cover; 6231, through hole; 624, support ring; 6241, light guide hole; 625, connecting rod; 626, elastic folding plate; 627, fan-shaped hole; 628, positioning rod; 629, third through hole; 63, lower cover; 631, second threaded hole; 64, sealing Sealing gasket; 641, connecting pad body; 642, first U-shaped pad body; 6421, fourth perforation; 643, second U-shaped pad body; 6431, sixth perforation; 65, storage compartment; 66, second fastener; 67, opening; 70, first fastener; 80, USB interface; 90, rubber plug; 100, speaker; 200, battery rack; 210, bottom frame; 220, cover; 300, lithium battery; 400, mesh cover; 500, third fastener. DETAILED DESCRIPTION

[0038] Below, the present invention is further described 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 new embodiments.

[0039] See also Figures 1 to 10 ,as well as Figure 12 As shown, an embodiment of the present invention discloses a PCB board fixing structure, which is mainly used in speakers. The PCB board fixing structure includes a PCB board 10, a front shell 20 and a rear shell 30. The front shell 20 includes a first shell 21 and a first limiting component 22 protruding from the first shell 21. The first limiting component 22 and the first shell 21 are combined to form a first slot 23. The end of the first limiting component 22 away from the first shell 21 has an inclined introduction surface 221. The introduction surface 221 is used for allowing the PCB board 10 to be quickly inserted into the first slot 23.

[0040] The rear shell 30 includes a second shell 31 and a second limiting assembly 32 protruding from the second shell 31. The second limiting assembly 32 and the second shell 31 enclose a second slot 321. The first shell 21 and the second shell 31 are snap-fitted and enclosed to form an accommodating space 40. The first limiting assembly 22 and the second limiting assembly 32 are both located in the accommodating space 40. The first slot 23 and the second slot 321 are both connected to the accommodating space 40. The PCB board 10 is located in the accommodating space 40, and the two ends of the PCB board 10 are respectively inserted into the first slot 23 and the second slot 321. The assembly of the PCB board 10 is simple and easy to operate. It does not require much assembly experience to ensure that the PCB board 10 is installed in place, and there is no need to add additional special screws and other fixing structures, thereby reducing assembly time and material costs.

[0041] In this embodiment, the first limiting assembly 22 includes a first stopper 222 and a second stopper 223. The first stopper 222 and the second stopper 223 are both protruded on the first shell 21, and the second stopper 223 is spaced below the first stopper 222. The first stopper 222, the second stopper 223 and a portion of the inner wall of the first shell 21 are enclosed to form the first slot 23. The introduction surface 221 is provided on the end of the second stopper 223 away from the first shell 21. The distance between the introduction surface 221 and the outer wall of the first shell 21 gradually increases from the top near the front shell 20 to the bottom near the front shell 20, so that the PCB board 10 can be quickly inserted into the first slot 23.

[0042] The first stopper 222 includes a first support plate 2221 and a plurality of spaced stoppers 2222, the plurality of stoppers 2222 are all protruded on the surface of the first support plate 2221 facing the second stopper 223, and the first support plate 2221 and the stopper 2222 are all protruded on the inner wall of the first shell 21; the second stopper 223 includes a second support plate 2231 and a plurality of spaced stoppers 2232, the plurality of stoppers 2232 are all protruded on the surface of the second support plate 2231 facing the first stopper 222, the inner side wall of the first shell 21 is provided with a groove 211 connected to the accommodating space 40, the second support plate 2231 and the baffle 2232 are all protruded on the bottom wall of the groove 211, the stopper 2222 and the baffle 223 2 are arranged at intervals, and a notch 2233 is provided at one end of the baffle 2232 away from the second support plate 2231. The notch 2233 is an "L"-shaped structure. The inner side wall of the notch 2233 close to one end of the first shell 21 is flush with the inner wall of the first shell 21. The inner wall of each notch 2233, each stopper 2222 and a part of the first shell 21 are enclosed to form the first slot 23. The end of each baffle 2232 away from the first shell 21 is jointly enclosed to form the introduction surface 221. This embodiment can make full use of the characteristics of the slide-type introduction surface 221 and apply it to the design, so that the assembly of the PCB board 10 is simple and easy to operate, and saves labor and material costs, thereby achieving the purpose of reducing costs and increasing efficiency.

[0043] The PCB board fixing structure also includes a buffer pad 50, which is provided with a "U"-shaped slot 51. The buffer pad 50 is installed on one end of the PCB board 10 through the slot 51. The PCB board 10 is then inserted into the first slot 23 through the buffer pad 50 to prevent the end of the PCB board 10 from being scratched against the introduction surface 221 during the assembly process.

[0044] The second limiting component 32 includes two positioning blocks 322, both of which are protruding from the second shell 31. The two positioning blocks 322 are both provided with a positioning cavity 3221. The two positioning cavities 3221 are arranged opposite to each other. The inner walls of the two positioning cavities 3221 and a portion of the second shell 31 are enclosed to form the second slot 321. When assembling the PCB board 10, one end of the PCB board 10 is first inserted into the second slot 321. Then, during the buckling process of the first shell 21 and the second shell 31, with the cooperation of the lead-in surface 221, the other end of the PCB board 10 can be quickly inserted into the first slot 23. The lead-in surface 221 of the front shell 20 mimicking the slide is combined with the two "U"-shaped positioning cavities 3221 of the rear shell 30 to limit the front and rear ends of the PCB board 10 respectively. There is no need to use separate fixing screws, and the operation is simple and error-prone.

[0045] Please see further Figures 2 to 6 ,as well as Figures 9 to 15In this embodiment, the PCB board fixing structure also includes a function key 60 and a plurality of first fasteners 70. The front shell 20 is penetrated by a key hole 24 and a plurality of first through-holes 25. The first through-holes 25 and the key hole 24 are both connected to the accommodating space 40. Each first through-hole 25 is arranged around the key hole 24. The function key 60 is provided with a plurality of first threaded holes 621. One end of the function key 60 is located in the accommodating space 40 and fixedly connected to the PCB board 10, and the other end is located in the key hole 24. The first fastener 70 passes through the first through-hole 25 and is connected to the first threaded hole 621 to assist in supporting and fixing the PCB board 10 to prevent the PCB board 10 from moving during use. The first fastener 70 is a screw.

[0046] The function key 60 includes an operation group pad 61, a sealing cover 62, a lower cover 63 and a sealing pad 64. The sealing cover 62, the lower cover 63 and the sealing pad 64 are all located in the accommodation space 40. The PCB board 10 includes a control board 11 and a plurality of buttons 12 mounted on the control board 11. Each button 12 is electrically connected to the control board 11. The operation group pad 61 is provided with a plurality of marks. One end of the operation group pad 61 with the mark is located in the key hole 24, and the other end is located in the accommodation space 40 and connected to the sealing cover 62. The sealing cover 62, the sealing pad 64, the control board 11 and the lower cover 63 enclose a storage compartment 65. The buttons 12 is located in the storage bin 65, the sealing cover 62 has a plurality of support rods 622, and each mark is respectively set corresponding to each button 12 through each support rod 622. By pressing each mark, the corresponding button 12 can be driven to operate through the corresponding support rod 622. The operation group pad 61 is provided with a plurality of second through-holes 611, and the first threaded hole 621 is provided on the sealing cover 62. The first fastener 70 passes through the first through-hole 25 and the second through-hole 611 in sequence and is connected with the first threaded hole 621, thereby fixing the function key 60 on the front shell 20, and the two ends of the control board 11 are respectively engaged with the first slot 23 and the second slot 321.

[0047] The sealing cover 62 includes a cover shell 623, a support ring 624, a plurality of connecting rods 625, a plurality of elastic folding plates 626 and a plurality of the support rods 622. The cover shell 623 is sandwiched between the operating group pad 61 and the sealing pad 64. The cover shell 623 is vertically penetrated by a circular through hole 6231. The support ring 624 is an annular structure. The support ring 624 is located in the through hole 6231 and is spaced apart from the inner wall of the through hole 6231. One end of the connecting rod 625 is connected to the support ring 624, and the other end is connected to the through hole 6231. The inner walls are connected, and the inner wall of part of the through hole 6231, the outer wall of part of the support ring 624 and the two adjacent connecting rods 625 are enclosed to form a fan-shaped hole 627. Multiple fan-shaped holes 627 are arranged around the outer periphery of the support ring 624. Both ends of the elastic folding plate 626 are connected to the inner wall of the fan-shaped hole 627. The support rod 622 is connected to the middle part of the elastic folding plate 626. Each fan-shaped hole 627 is connected to the storage bin 65. The support ring 624 is inserted into the storage bin 65. The operation group pad 61 covers the above-mentioned through hole 6231.

[0048] The operating group pad 61 includes a light-transmitting button 612, a soft rubber cover 613 and a hard press frame 614. The hard press frame 614, the light-transmitting button 612 and part of the soft rubber cover 613 can be located in the keyhole 24. The other part of the soft rubber cover 613 is located in the accommodating space 40 and is connected to the sealing cover 62. The hard press frame 614 is annular. The hard press frame 614 and the light-transmitting button 612 are both installed on the top of the soft rubber cover 613. Each mark is provided on the hard press frame 614. Each mark ring is provided outside the light-transmitting button 612. The PCB board 10 also includes a mounting plate installed on the control The LED light 13 on the board 11 is electrically connected to the control board 11. The buttons 12 are arranged around the LED light 13. The support ring 624 is provided with a light guide hole 6241. The soft rubber cover 613 is made of a transparent material. The light emitted by the LED light 13 can pass through the light guide hole 6241 and the soft rubber cover 613 into the light-transmitting button 612. The control board 11 can drive the LED light 13 to emit light of various colors and transmit it to the light-transmitting button 612, causing the light-transmitting button 612 to display various colors of light, thereby indirectly reflecting the various working conditions of the speaker.

[0049] In this embodiment, the sealing cover 62 also includes a plurality of positioning rods 628 for preventing adjacent buttons 12 from being linked together. Each positioning rod 628 is protruded on each connecting rod 625, and the positioning rod 628 is located between two adjacent support rods 622. The bottom of the operation group pad 61 is provided with a plurality of receiving grooves 615, a plurality of first positioning grooves 616 and a plurality of second positioning grooves 617. The second positioning groove 617 is recessed on the bottom wall of the receiving groove 615. The elastic folding plate 626 and the support rod 622 are both located in the receiving groove 615. The positioning rod 628 is inserted into the first positioning groove 616, and the support rod 622 is inserted into the second positioning groove 617. When the operation group pad 61 is pressed, the corresponding button 12 can be driven to act through the corresponding support rod 622. By utilizing the seesaw principle, the elastic characteristics of the soft rubber cover 613 in the operation group pad 61 are fully utilized to ensure that when the button 12 is actuated, its adjacent buttons 12 will neither be linked together nor affect the feel.

[0050] In this embodiment, the sealing gasket 64 includes a connecting gasket body 641, a first U-shaped gasket body 642 and a second U-shaped gasket body 643 arranged parallel to the first U-shaped gasket body 642. The first U-shaped gasket body 642 is clamped between the sealing cover 62 and the control board 11, and the second U-shaped gasket body 643 is clamped between the lower cover 63 and the control board 11. One end of the connecting gasket body 641 is connected to the first U-shaped gasket body 642 and the other end is connected to the second U-shaped gasket body 643 to enhance the sealing of the corresponding connection. The connecting gasket body 641 is located outside the storage bin 65, and the sealing gasket 64 is made of silicone material.

[0051] The function key 60 also includes multiple second fasteners 66, the sealing cover 62 is also provided with multiple third perforations 629, the first U-shaped pad 642 is provided with multiple fourth perforations 6421, the control panel 11 is provided with multiple fifth perforations 14, the second U-shaped pad 643 is provided with multiple sixth perforations 6431, and the lower cover 63 is provided with multiple second threaded holes 631. The second fastener 66 passes through the third perforation 629, the fourth perforation 6421, the fifth perforation 14 and the sixth perforation 6431 in sequence and is connected to the second threaded hole 631, thereby assembling the sealing cover 62, the control panel 11, the sealing pad 64 and the lower cover 63 together. The second fastener 66 is a screw.

[0052] In this embodiment, the PCB board fixing structure also includes at least one USB interface 80 and a rubber plug 90. The side of the function key 60 is provided with an opening 67 connected to the storage compartment 65. The back shell 30 is penetrated by at least one embedding hole 33 connected to the accommodating space 40. The connecting pad 641 is an annular structure. The connecting pad 641 is clamped between the function key 60 and the inner wall of the back shell 30. One end of the USB interface 80 is located in the storage compartment 65 and is electrically connected to the control board 11, and the other end passes through the opening 67 and the annular connecting pad 641 in sequence and is located in the embedding hole 33. The speaker can be connected to an external power supply through the USB interface 80. The rubber plug 90 is installed on the outside of the back shell 30 to seal the USB interface 80.

[0053] The PCB board fixing structure also includes multiple speakers 100. The front shell 20 is penetrated by a plurality of mounting holes 26, and the rear shell 30 is penetrated by a plurality of sound holes 34. Some of the speakers 100 are respectively installed on each mounting hole 26, and the other part of the speakers 100 are all installed in the accommodating space 40 and are respectively arranged corresponding to the corresponding sound holes 34. Each speaker 100 is electrically connected to the PCB board 10.

[0054] The PCB board fixing structure also includes a battery rack 200 and a lithium battery 300. The battery rack 200 and the lithium battery 300 are both located in the accommodating space 40. The battery rack 200 includes a base frame 210 and a cover plate 220 that is snap-connected to the base frame 210. The base frame 210 is fixed to the inner wall of the accommodating space 40. The lithium battery 300 is clamped between the base frame 210 and the cover plate 220. The lithium battery 300 is electrically connected to the PCB board 10.

[0055] The PCB board fixing structure also includes a mesh cover 400 and multiple third fasteners 500. The front shell 20 is also penetrated by multiple seventh through-holes 27, and the rear shell 30 is also penetrated by multiple third threaded holes 35. The third fasteners 500 pass through the seventh through-holes 27 and are connected to the third threaded holes 35, thereby fixing the front shell 20 on the rear shell 30. The mesh cover 400 is installed on the front shell 20, and the third fasteners 500 are screws.

[0056] The utility model also discloses a sound box, comprising the above-mentioned PCB board fixing structure.

[0057] The assembly method of the PCB board fixing structure includes the following steps:

[0058] Step S101, assembling the function keys 60 and the PCB board 10, first installing the sealing gasket 64 and the buffer pad 50 on the PCB board 10, then installing the sealing cover 62 and the lower cover 63 on the upper and lower ends of the PCB board 10 respectively and connecting them to the sealing gasket 64, wherein the first U-shaped pad 642 of the sealing gasket 64 is clamped between the sealing cover 62 and the top of the control board 11, and the second U-shaped pad 643 of the sealing gasket 64 is clamped between the lower cover 63 and the bottom of the control board 11, then installing the operation group pad 61 on the sealing cover 62, and finally fixing the sealing cover 62, the sealing gasket 64, the PCB board 10 and the lower cover 63 together using a plurality of second fasteners 66;

[0059] Step S102: Fix the lithium battery 300 and each speaker 100. Install the lithium battery 300 on the front housing 20 via the battery holder 200. Then, install each speaker 100 on the front housing 20 and the rear housing 30 respectively. The lithium battery 300 and the speaker 100 are electrically connected to the PCB 10.

[0060] Step S103: Fixing the PCB board 10. First, insert one end of the PCB board 10 in step S101 into the second slot 321 of the rear housing 30. Then, insert the function key 60 into the key hole 24. Finally, when the front housing 20 is snapped onto the rear housing 30, the other end of the PCB board 10 can be quickly inserted into the first slot 23 of the front housing 20 with the help of the guide surface 221 of the front housing 20, and the buffer pad 50. Finally, the function key 60 is fixed to the front housing 20 using a plurality of first fasteners 70.

[0061] Step S104: Fix the front shell 20 and the rear shell 30. Use a plurality of third fasteners 500 to fix the front shell 20 and the rear shell 30 in step S103, and then install the screen frame on the front shell 20 to complete the entire installation process.

[0062] In summary, the first limiting component 22 in the present invention has an inclined guide surface 221 at one end away from the first shell 21. The guide surface 221 is similar to a slide structure. The PCB board fixing structure can fully utilize the inclined feature of the guide surface 221 and apply it to the design. After one end of the PCB board 10 is inserted into the second slot 321 of the rear shell 30, the other end of the PCB board 10 can be quickly inserted into the first slot 23 of the front shell 20 through the guide surface 221, making the assembly of the PCB board 10 simple and easy to operate, saving time and effort. There is no need to use special screws for fixing, which can save labor and material costs, achieve the purpose of reducing costs and increasing efficiency, and is suitable for large-scale promotion.

[0063] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A PCB board fixing structure, characterized in that: include: PCB board; The front housing includes a first housing and a first stopper assembly protruding from the first housing, wherein the first stopper assembly and the first housing together form a first slot, and an end of the first stopper assembly away from the first housing has an inclined guide surface for quickly inserting the PCB into the first slot; The back shell includes a second shell and a second limiting assembly protruding from the second shell. The second limiting assembly and the second shell are combined to form a second slot. The first shell and the second shell are snap-connected and combined to form a accommodating space. The first limiting assembly and the second limiting assembly are both located in the accommodating space. The first slot and the second slot are both connected to the accommodating space. The PCB board is located in the accommodating space, and the two ends of the PCB board are respectively inserted into the first slot and the second slot.

2. The PCB board fixing structure according to claim 1, characterized in that: The first limiting assembly includes a first stopper and a second stopper, the first stopper and the second stopper are both protruding from the first shell, the second stopper is located below the first stopper, the first stopper, the second stopper and part of the first shell are combined to form the first slot, the introduction surface is provided on the second stopper, and the distance between the introduction surface and the outer side wall of the first shell gradually increases from near the top of the front shell to near the bottom of the front shell.

3. The PCB board fixing structure according to claim 2, characterized in that: The first stopper includes a first support plate and a plurality of stoppers protruding from a surface of the first support plate facing the second stopper, wherein the first support plate and the stoppers are protruding from the inner wall of the first shell; The second stopper includes a second support plate and a plurality of baffles that are protruded from the second support plate on the side facing the first stopper. The inner side wall of the first shell is provided with a groove that is connected to the accommodating space. The second support plate and the baffle are both protruded from the bottom wall of the groove. A notch groove is provided at one end of the baffle away from the second support plate. The inner walls of each notch groove, each baffle and part of the first shell are enclosed to form the first slot, and each baffle is enclosed to form the introduction surface.

4. The PCB board fixing structure according to claim 1, characterized in that: The second limiting assembly includes two positioning blocks both protruding from the second shell, and the two positioning blocks are each provided with a positioning cavity. The two positioning cavities are arranged opposite to each other, and the inner walls of the two positioning cavities and a portion of the second shell are enclosed to form the second slot.

5. The PCB board fixing structure according to claim 1, characterized in that: The PCB board fixing structure further includes a buffer pad, which is installed on one end of the PCB board. The PCB board is inserted into the first slot through the buffer pad.

6. The PCB board fixing structure according to claim 1, characterized in that: The PCB board fixing structure also includes a function key and multiple first fasteners. The front shell is penetrated by a keyhole and multiple first through-holes. The first through-holes and the keyholes are both connected to the accommodating space. The function key is provided with multiple first threaded holes. One end of the function key is located in the accommodating space and connected to the PCB board, and the other end is located in the keyhole. The first fastener passes through the first through-hole and is connected to the first threaded hole.

7. The PCB board fixing structure according to claim 6, characterized in that: The function key includes an operation group pad, a sealing cover, a lower cover and a sealing gasket, the sealing cover, the lower cover and the sealing gasket are all located in the accommodating space, the PCB board includes a control panel and a plurality of buttons all mounted on the control panel, the operation group pad is provided with a plurality of marks, one end of the operation group pad having the mark is located in the key hole, the other end is located in the accommodating space and is connected to the sealing cover, the sealing cover, the sealing gasket, the control panel and the lower cover are enclosed to form a storage bin, the button is located in the storage bin, the sealing cover has a plurality of support rods, each of the marks is respectively arranged to correspond to each of the buttons through each of the support rods, and by pressing the mark, the corresponding button can be driven by the corresponding support rod, the operation group pad is provided with a plurality of second through-holes, the first threaded hole is provided on the sealing cover, the first fastener passes through the first through-hole and the second through-hole in sequence and is connected to the first threaded hole, and the two ends of the control panel are respectively engaged with the first slot and the second slot.

8. The PCB board fixing structure according to claim 7, characterized in that: The sealing gasket includes a connecting pad body, a first U-shaped pad body and a second U-shaped pad body arranged parallel to the first U-shaped pad body, the first U-shaped pad body is clamped between the sealing cover and the control board, the second U-shaped pad body is clamped between the lower cover and the control board, one end of the connecting pad body is connected to the first U-shaped pad body, and the other end is connected to the second U-shaped pad body.

9. The PCB board fixing structure according to claim 8, characterized in that: The function key also includes multiple second fasteners, the sealing cover is also provided with multiple third perforations, the first U-shaped pad is provided with multiple fourth perforations, the control panel is provided with multiple fifth perforations, the second U-shaped pad is provided with multiple sixth perforations, and the lower cover is provided with multiple second threaded holes. The second fastener passes through the third perforation, the fourth perforation, the fifth perforation and the sixth perforation in sequence and is connected to the second threaded hole.

10. A speaker, characterized in that: It comprises the PCB board fixing structure according to any one of claims 1 to 9.

Images