Anti-drop coding adjusting device and sound box

Abstract

The utility model discloses an anti-drop coding adjusting device and a sound box, the anti-drop coding adjusting device comprises a casing, a hard rubber keyboard, a nut and a knob, the casing comprises a housing and a support ring, the support ring is convexly arranged on the outer wall of the housing and forms an accommodating groove with the housing, and the housing is provided with a through hole communicated with the accommodating groove; the hard rubber keyboard comprises a circuit board and a coding switch, the circuit board is fixed in the shell, one end of the coding switch is connected with the circuit board, and the other end penetrates through the through hole and then is located in the containing groove. The nut is located in the containing groove, is installed on the coding switch in a threaded mode and abuts against the shell. The rotary knob comprises a cover body assembly and an annular surrounding plate arranged on the cover body assembly in a protruding mode, a clamping groove is defined by the annular surrounding plate and the cover body assembly, the coding switch is clamped and inserted into the clamping groove, the coding switch and the bottom wall of the clamping groove are arranged in a spaced mode, the cover body assembly covers the supporting ring, and during an anti-falling test, the coding switch can run towards one side of the bottom wall of the clamping groove; therefore, the cover body assembly is contacted with the support ring, and impact force on the cover body assembly is transmitted to the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of sound box structure, in particular to an anti-fall and anti-fall coding adjustment device and a sound box. Background Art

[0002] A rotary encoder switch, also known as a small rotary encoder, refers to an electronic switch component with a set of regular and strictly timed pulses. According to the structure, it can be divided into a mechanical rotary encoder switch and a photoelectric rotary encoder switch. The so-called mechanical rotary encoder switch refers to an encoding product that generates regular pulses by forming contact points through the regular rotation of signal-coordinated parts, and its life is greatly limited; the photoelectric rotary encoder switch refers to an encoding product that generates regular pulses through contact points formed by light source coupling, and its life is extremely long. Rotary encoder switches are widely used in various product fields for their unique feel and performance.

[0003] The existing sound box generally includes a shell, a PCB board, a knob, a rotary coding switch and a speaker connected to the PCB board. The PCB board is installed inside the shell, and the rotary coding switch is installed on the PCB board and passes through the shell to be connected to the external knob. By turning the knob, the volume of the speaker can be adjusted through the rotary coding switch.

[0004] However, since the volume of the speaker needs to be adjusted by pinching the knob with fingers, the knob needs to be as high as 10mm above the shell surface to ensure its operability. This makes it difficult for the speaker product to pass the drop test and may even directly damage the internal PCB board. In addition, the rotary coding switch is often accompanied by a dripping sound when the trigger function is pressed and rotated, especially when playing light music, which seriously affects the user's hearing. Utility Model Content

[0005] The utility model provides an anti-fall coding adjustment device and a speaker, aiming to solve the problem that when adjusting the volume of the speaker in the existing speaker, it is necessary to pinch the knob on it with fingers, and the knob needs to be higher than the outer shell surface by more than 10 mm to ensure its operability. This makes it difficult for the speaker product to pass the drop test and even directly damages the internal PCB board.

[0006] The utility model provides an anti-fall coding adjustment device, comprising:

[0007] The housing comprises an outer shell and a support ring, wherein the support ring is convexly arranged on the outer wall of the outer shell and encloses the outer shell to form a receiving groove, and the outer shell is penetrated by a through hole communicating with the receiving groove;

[0008] A hard plastic keyboard, comprising a circuit board and a coding switch, wherein the circuit board is fixed in the housing, one end of the coding switch is connected to the circuit board, and the other end of the coding switch passes through the through hole and is located in the receiving groove;

[0009] A nut, located in the receiving groove, wherein the nut is threadably mounted on the coding switch and pressed against the housing;

[0010] The knob comprises a cover assembly and an annular enclosure protruding from the cover assembly, wherein the annular enclosure and the cover assembly are combined to form a slot, the coding switch is inserted into the slot and is spaced apart from the bottom wall of the slot, the cover assembly covers the support ring, and during a drop resistance test, the coding switch can move toward the bottom wall of the slot so that the cover assembly contacts the support ring, and the impact force borne by the cover assembly is transmitted to the housing through the support ring.

[0011] Furthermore, the distance between the coding switch and the bottom wall of the slot is greater than the distance between the support ring and the cover assembly.

[0012] Furthermore, the cover body assembly includes a top cover and an annular baffle, the top cover is bowl-shaped, the annular baffle and the annular enclosure are both protruding from the inner wall of the top cover, the annular enclosure is located inside the annular baffle, and the support ring is inserted between the annular baffle and the annular enclosure.

[0013] Furthermore, a groove with an arc-shaped cross section is provided on a side of the top cover away from the hard rubber keyboard.

[0014] Furthermore, the anti-fall coding adjustment device also includes an annular washer, the coding switch includes a coding seat and a torsion rod rotatably mounted on the coding seat, one end of the coding seat is connected to the circuit board, and the other end passes through the through hole and is located in the accommodating groove, the torsion rod and the annular washer are both located in the accommodating groove, the outer wall of the coding seat is provided with an external thread, the annular washer is sleeved on the coding seat, the nut thread is installed on the external thread and is pressed against the outer shell through the annular washer, and the torsion rod is clamped in the slot.

[0015] Further, the support ring includes a first annular side plate, a second annular side plate and a plurality of connecting blocks, the first annular side plate, the second annular side plate and the connecting blocks are all protruding from the outer shell, the first annular side plate, the second annular side plate and the annular surrounding plate are coaxially arranged, the second annular side plate is located between the annular surrounding plate and the first annular side plate, and one end of the connecting block is connected to the first annular side plate, and the other end is connected to the second annular side plate.

[0016] Furthermore, the anti-fall coding adjustment device also includes an annular shock-proof pad located inside the outer shell, the housing also includes a third annular side panel protruding from the inner wall of the outer shell, the perforation is located in the third annular side panel, the annular shock-proof pad is clamped between the circuit board and the third annular side panel, the annular shock-proof pad, the hard rubber keyboard, the outer shell and the third annular side panel together form a sealed chamber for noise transmission.

[0017] Furthermore, the housing is also provided with a plurality of concave cavities, which penetrate the outer shell to one side of the inner wall of the outer shell and extend toward the middle of the connecting block, and each of the concave cavities is communicated with the sealing chamber.

[0018] Furthermore, the inner wall of the sealing chamber, the inner wall of the concave cavity, the inner wall of the cover assembly and the outer wall of the support ring are all provided with patterns for reducing noise.

[0019] The utility model also provides a sound box, comprising the anti-fall-resistant coding adjustment device as described above.

[0020] Compared with the prior art, the beneficial effects of the present invention include at least:

[0021] In the utility model, when the speaker is subjected to a drop-proof test, the top surface of the knob on the speaker will first fall downward and contact the ground, and the ground will give the knob an impact force. Since the coding switch is inserted into the card slot and is spaced apart from the bottom wall of the card slot, under the action of the impact force, the entire knob is forced to move toward one side of the coding switch as a whole, that is, the coding switch can move toward the bottom wall of the card slot, so that the cover body assembly in the knob can contact the support ring, and the nut outside the shell is installed on the coding switch and pressed against the shell, so that the impact force on the cover body assembly can be transmitted to the shell through the support ring, thereby preventing the impact force from being transmitted to the circuit board, avoiding damage to the circuit board in the speaker, and thus successfully passing the drop test of the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of the anti-fall coding adjustment device provided in an embodiment of the utility model;

[0023] Figure 2 for Figure 1 Sectional view along line AA;

[0024] Figure 3 for Figure 2 A partial enlarged schematic diagram of the middle edge B;

[0025] Figure 4 An exploded diagram of the anti-fall coding adjustment device provided in an embodiment of the utility model;

[0026] Figure 5A schematic diagram of the structure of a knob provided in an embodiment of the utility model;

[0027] Figure 6 The structure of the housing provided by the embodiment of the utility model is shown in FIG. Figure 1 ;

[0028] Figure 7 The structure of the housing provided by the embodiment of the utility model is shown in FIG. Figure 2 ;

[0029] Figure 8 A schematic diagram of the structure of a coding switch provided in an embodiment of the utility model.

[0030] In the figure:

[0031] 10. Casing; 11. Shell; 111. Perforation; 112. Opening; 12. Support ring; 121. First annular side plate; 122. Second annular side plate; 123. Connecting block; 13. Accommodating groove; 14. Third annular side plate; 15. Stud; 151. Threaded hole; 16. Concave cavity; 20. Hard rubber keyboard; 21. Circuit board; 211. Through hole; 22. Encoding switch; 221. Encoding seat; 2211. External thread; 222. Torsion bar; 3 0. Nut; 40. Knob; 41. Cover assembly; 411. Top cover; 412. Annular baffle; 413. Groove; 42. Annular enclosure; 421. Annular support plate; 422. Protruding ridge; 43. Slot; 50. Button; 60. Annular gasket; 70. Annular shock-absorbing pad; 80. Fastener; 90. Sealed chamber; 100. First cavity; 200. Second cavity; 300. Third cavity; 400. Fourth cavity; 500. Fifth cavity. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figures 1 to 6 As shown, an embodiment of the utility model discloses an anti-fall coding adjustment device, which is mainly used in speakers. The anti-fall coding adjustment device includes a casing 10, a hard rubber keyboard 20, a nut 30 and a knob 40. The casing 10 includes an outer shell 11 and a support ring 12. The support ring 12 is an annular structure. The support ring 12 is protruding on the outer wall of the outer shell 11 and is enclosed with the outer shell 11 to form a receiving groove 13. The outer shell 11 is provided with a storage space. The outer shell 11 is penetrated by a through hole 111, which is connected to the receiving groove 13 and is also connected to the storage space.

[0034] The hard rubber keyboard 20 includes a circuit board 21 and a coding switch 22. The circuit board 21 is fixed in the storage space of the shell 11. One end of the coding switch 22 is located in the storage space and connected to the circuit board 21, and the other end passes through the through hole 111 and is located in the receiving groove 13. The coding switch 22 is electrically connected to the circuit board 21. The nut 30 is located in the receiving groove 13. The nut 30 is threadedly installed on the coding switch 22 and pressed against the shell 11 to prevent the coding switch 22 from moving toward the inside of the shell 11 relative to the shell 11. The coding switch 22 is a common rotary coding switch on the market, which is generally used to adjust the volume of the sound in the speaker.

[0035] The knob 40 includes a cover assembly 41 and an annular enclosure 42 protruding from the cover assembly 41. The annular enclosure 42 and the cover assembly 41 enclose a slot 43. The coding switch 22 is inserted into the slot 43 and is spaced apart from the bottom wall of the slot 43. The coding switch 22 is not inserted to the bottom of the slot 43. The cover assembly 41 covers the support ring 12. Since the knob 40 can rotate, the cover assembly 41 and the support ring 12 are spaced apart. The knob 40 is made of ABS material. When the anti-fall test is performed, the sound The top surface of the knob 40 on the box will fall down and touch the ground first, and the ground will give the knob 40 an impact force. Under the action of the impact force, the entire knob 40 will move toward the side of the coding switch 22 as a whole, and the coding switch 22 can move toward the bottom wall side of the slot 43 to make the cover assembly 41 contact the support ring 12. The impact force borne by the cover assembly 41 is transmitted to the outer shell 11 through the support ring 12, preventing the impact force from being transmitted to the circuit board 21, avoiding damage to the circuit board 21 in the speaker, and thus successfully passing the drop test of the speaker.

[0036] It should be noted that the anti-fall coding adjustment device can include multiple coding switches 22 and multiple other buttons 50. The other buttons 50 are not the focus of protection of this application, and each coding switch 22 only corresponds to a support ring 12, a nut 30 and a knob 40. In this embodiment, only one of the coding switches 22 is introduced.

[0037] In some embodiments, the distance between the coding switch 22 and the bottom wall of the card slot 43 is greater than the distance between the support ring 12 and the cover body assembly 41, so that when the coding switch 22 can move toward the bottom wall of the card slot 43, the cover body assembly 41 can first contact the support ring 12, and the coding switch 22 does not need to contact the bottom wall of the card slot 43.

[0038] In some embodiments, the annular enclosure 42 includes an annular support plate 421 and a plurality of ridges 422 protruding from the inner wall of the annular support plate 421 . The annular support plate 421 protrudes from the cover assembly 41 , and the coding switch 22 is inserted between the ridges 422 .

[0039] In this embodiment, the cover body assembly 41 includes a top cover 411 and an annular baffle 412. The top cover 411 is bowl-shaped. The annular baffle 412 and the annular enclosure 42 are both protruded on the inner wall of the top cover 411. The annular enclosure 42 is located in the annular baffle 412. The annular enclosure 42 and the annular baffle 412 are coaxially arranged. The support ring 12 is inserted between the annular baffle 412 and the annular enclosure 42. The distance between the top cover 411 and the outer shell 11 and the distance between the annular baffle 412 and the outer shell 11 are both greater than the distance between the top cover 411 and the support ring 12, so that the cover body assembly 41 can first contact the support ring 12 during the drop protection test.

[0040] In some embodiments, a groove 413 with an arc-shaped cross-section is provided on one side of the top cover 411 away from the hard rubber keyboard 20. When the top surface of the knob 40 on the speaker falls down and touches the ground, the edge of the top cover 411 touches the ground first, so that the impact force on the cover body assembly 41 can be directly transmitted to the support ring 12.

[0041] Please refer to Figure for further information. Figures 3 to 8 The anti-fall coding adjustment device also includes an annular gasket 60. The coding switch 22 includes a coding seat 221 and a torsion bar 222 rotatably mounted on the coding seat 221. One end of the coding seat 221 is located in the storage space and connected to the circuit board 21, and the other end passes through the through hole 111 and is located in the receiving groove 13. The torsion bar 222 and the annular gasket 60 are both located in the receiving groove 13. The outer wall of the coding seat 221 is provided with an external thread 2211, and the annular gasket 60 is sleeved on the coding seat 221. The nut 30 is threadedly mounted on the external thread 2211 and pressed against the housing 11 through the annular gasket 60 to prevent the coding switch 22 from moving relative to the housing 11 toward the inner side of the housing 11. The torsion bar 222 is clamped with the slot 43, and the torsion bar 222 and the bottom wall of the slot 43 are spaced apart. By turning the knob 40, the knob 40 can drive the torsion bar 222 to rotate together to adjust the sound size in the speaker.

[0042] The support ring 12 includes a first annular side plate 121, a second annular side plate 122 and a plurality of connecting blocks 123. The first annular side plate 121, the second annular side plate 122 and the connecting blocks 123 are all protruded on the outer shell 11. The first annular side plate 121, the second annular side plate 122 and the annular enclosure 42 are coaxially arranged. The second annular side plate 122 is located between the annular enclosure 42 and the first annular side plate 121. One end of the connecting block 123 is connected to the first annular side plate 121 and the other end is connected to the second annular side plate 122. Since a groove 413 with an arc-shaped cross-section is provided on one side of the top cover 411 away from the hard rubber keyboard 20, the height of the second annular enclosure 42 is less than the height of the first annular enclosure 42. When the anti-fall test is performed, the first annular side plate 121 and the second annular side plate 122 both contact the top cover 411 at the same time.

[0043] In this embodiment, the anti-fall coding adjustment device also includes an annular shockproof pad 70 and a plurality of fasteners 80, the annular shockproof pad 70 and the fasteners 80 are both located in the storage space of the shell 11, the housing 10 also includes a third annular side plate 14 and a plurality of studs 15, the third annular side plate 14 and the studs 15 are both convexly arranged on the inner wall of the storage space of the shell 11, the studs 15 are provided with threaded holes 151, the through holes 111 are located in the third annular side plate 14, and each stud 15 is arranged outside the third annular side plate 14, the circuit board 21 is penetrated with a plurality of through holes 211, and the fasteners 80 pass through the corresponding through holes 211 and are connected with the corresponding threaded holes 151. The hole 151 is connected, so that the circuit board 21 is fixed in the storage space of the shell 11, and the annular shock-proof pad 70 is clamped between the circuit board 21 and the third annular side plate 14. The annular shock-proof pad 70 is made of EVA material. The annular shock-proof pad 70, the hard rubber keyboard 20, the shell 11 and the third annular side plate 14 are enclosed to form a sealed chamber 90 for noise transmission. The sealed chamber 90 is located inside the storage space. The noise is mainly the dripping sound generated when the coding switch 22 is working. The fastener 80 is a screw. A coding switch 22 is also equipped with an annular gasket 60, an annular shock-proof pad 70 and a third annular side plate 14.

[0044] When the top surface of the knob 40 on the speaker falls down and touches the ground first, the ground will give the knob 40 an impact force. Since the coding switch 22 is inserted into the slot 43 and is spaced apart from the bottom wall of the slot 43, under the action of the impact force, the entire knob 40 is forced to move toward the side of the coding switch 22 as a whole. The cover assembly 41 in the knob 40 first contacts the first annular side plate 121 and the second annular side plate 122 in the support ring 12. Through the connection between the support ring 12 and the outer shell 11, the impact force on the cover assembly 41 can be transmitted to the outer shell 11 through the support ring 12 to prevent the impact force from being transmitted to the circuit board 21. The annular shockproof pad 70 corresponding to the third annular side plate 14 is still within the buffering deformation amount. The force on the third annular side plate 14 will be buffered by the annular shockproof pad 70 to avoid damaging the circuit board 21 in the speaker.

[0045] The housing 10 is also provided with a plurality of concave cavities 16, which are connected to the storage space. The concave cavities 16 extend through the outer shell 11 to one side of the inner wall of the outer shell 11 and extend toward the middle recess of the connecting block 123. Each concave cavity 16 is connected to the sealed chamber 90 so that noise can be transmitted in the sealed chamber 90 and each concave cavity 16.

[0046] In some embodiments, the inner wall of the sealed chamber 90, the inner wall of the cavity 16, the inner wall of the cover assembly 41 and the outer wall of the support ring 12 are all provided with patterns for reducing noise, so as to enhance the reflection effect of sound and reduce noise.

[0047] In this embodiment, the noise can be reduced by using a sound segmentation method, and the noise of the dripping sound generated by the coding switch 22 during the rotation process is transmitted to multiple cavities, such as the first cavity 100 formed by the sealing chamber 90 and each concave cavity 16, the second cavity 200 formed by the torsion bar 222, the nut 30, the inner wall of the receiving groove 13 and the inner wall of the knob 40, the third cavity 300 formed by the top of the support ring 12 and the inner wall of the knob 40, the outer wall of the support ring 12, the inner wall of the top cover 411 and the annular baffle 41 2, the fourth cavity 400 is formed by the inner wall of the annular baffle 412, the fifth cavity 500 is formed by the outer wall of the annular baffle 412, the inner wall of part of the top cover 411 and the outer wall of part of the shell 11, the second cavity 200, the third cavity 300, the fourth cavity 400 and the fifth cavity 500 are connected in sequence, and the noise passes through the above five layers of cavities through continuous reflection. The noise can be transmitted to the outside through multi-layer attenuation to achieve the purpose of reducing the volume, and the inner surface of the cavity is textured to enhance the reflection effect and further reduce the noise.

[0048] The anti-fall coding adjustment device also includes other buttons 50 , and a plurality of openings 112 are correspondingly provided on the housing 11 . The other buttons 50 are all mounted on the circuit board 21 , and the other buttons 50 pass through the corresponding openings 112 , respectively.

[0049] The utility model also discloses a speaker, including the anti-fall-resistant coding adjustment device as described above, which can effectively reduce the dripping noise generated by the coding switch 22 when it is rotated and used, and simultaneously improve the strength of the product during the reliability drop test, and reduce the risk of the circuit board 21 being damaged.

[0050] Assembly method of anti-fall coding adjustment device:

[0051] First, the other buttons 50 and each coding switch 22 are installed on the circuit board 21, and then the circuit board 21 is fixed to the inside of the housing 11 by multiple fasteners 80, wherein the annular shock-absorbing pad 70 is clamped between the circuit board 21 and the corresponding third annular side plate 14, and the other buttons 50 are respectively passed through the corresponding openings 112 on the housing 11, and the coding switch 22 is passed through the corresponding through-holes 111, and then the corresponding annular gasket 60 is installed on the coding switch 22, and then the corresponding nut 30 is installed and tightened on the external thread 2211 through the external thread 2211 of the coding switch 22 and pressed against the housing 11 through the annular gasket 60, and finally the corresponding knob 40 is installed, and the card slot 43 in the knob 40 is tightly matched with the torsion bar 222 of the coding switch 22, and the knob 40 is pressed into place and fixed, thereby completing the assembly and fixation.

[0052] To sum up, in the utility model, when the speaker is subjected to a drop test, the top surface of the knob 40 on the speaker will first fall down and contact the ground, and the ground will give the knob 40 an impact force. Since the coding switch 22 is inserted into the card slot 43 and is spaced apart from the bottom wall of the card slot 43, under the action of the impact force, the entire knob 40 is forced to move toward the side of the coding switch 22 as a whole, that is, the coding switch 22 can move toward the side of the bottom wall of the card slot 43, and the cover assembly 41 in the knob 40 can contact the support ring 12, and the nut 30 outside the shell 11 is installed on the coding switch 22 and pressed against the shell 11, so that the impact force on the cover assembly 41 can be transmitted to the shell 11 through the support ring 12, thereby preventing the impact force from being transmitted to the circuit board 21, avoiding damage to the circuit board 21 in the speaker, and thus successfully passing the drop test of the speaker.

[0053] 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 drop-proof coding adjustment device, characterized in that: include: The housing comprises an outer shell and a support ring, wherein the support ring is convexly arranged on the outer wall of the outer shell and encloses the outer shell to form a receiving groove, and the outer shell is penetrated by a through hole communicating with the receiving groove; A hard plastic keyboard, comprising a circuit board and a coding switch, wherein the circuit board is fixed in the housing, one end of the coding switch is connected to the circuit board, and the other end of the coding switch passes through the through hole and is located in the receiving groove; A nut, located in the receiving groove, wherein the nut is threadably mounted on the coding switch and pressed against the housing; The knob comprises a cover assembly and an annular enclosure protruding from the cover assembly, wherein the annular enclosure and the cover assembly are combined to form a slot, the coding switch is inserted into the slot and is spaced apart from the bottom wall of the slot, the cover assembly covers the support ring, and during a drop resistance test, the coding switch can move toward the bottom wall of the slot so that the cover assembly contacts the support ring, and the impact force borne by the cover assembly is transmitted to the housing through the support ring.

2. The anti-fall coding adjustment device according to claim 1, characterized in that: The distance between the coding switch and the bottom wall of the slot is greater than the distance between the support ring and the cover assembly.

3. The anti-fall coding adjustment device according to claim 1, characterized in that: The cover body assembly includes a top cover and an annular baffle, the top cover is bowl-shaped, the annular baffle and the annular enclosure are both protruded on the inner wall of the top cover, the annular enclosure is located inside the annular baffle, and the support ring is inserted between the annular baffle and the annular enclosure.

4. The anti-fall coding adjustment device according to claim 3 is characterized in that: A groove with an arc-shaped cross section is provided on a side of the top cover away from the hard rubber keyboard.

5. The anti-fall coding adjustment device according to claim 1, characterized in that: The anti-fall coding adjustment device also includes an annular washer, the coding switch includes a coding seat and a torsion rod rotatably mounted on the coding seat, one end of the coding seat is connected to the circuit board, and the other end passes through the through hole and is located in the accommodating groove, the torsion rod and the annular washer are both located in the accommodating groove, the outer wall of the coding seat is provided with an external thread, the annular washer is sleeved on the coding seat, the nut thread is installed on the external thread and is pressed against the outer shell through the annular washer, and the torsion rod is clamped in the slot.

6. The anti-fall coding adjustment device according to claim 1, characterized in that: The support ring includes a first annular side plate, a second annular side plate and a plurality of connecting blocks, the first annular side plate, the second annular side plate and the connecting blocks are all protruded on the outer shell, the first annular side plate, the second annular side plate and the annular surrounding plate are coaxially arranged, the second annular side plate is located between the annular surrounding plate and the first annular side plate, one end of the connecting block is connected to the first annular side plate, and the other end is connected to the second annular side plate.

7. The anti-fall coding adjustment device according to claim 6, characterized in that: The anti-fall coding adjustment device also includes an annular shockproof pad located inside the outer shell, and the housing also includes a third annular side plate protruding from the inner wall of the outer shell, the through hole is located in the third annular side plate, and the annular shockproof pad is clamped between the circuit board and the third annular side plate. The annular shockproof pad, the hard rubber keyboard, the outer shell and the third annular side plate are enclosed to form a sealed chamber for noise transmission.

8. The anti-fall coding adjustment device according to claim 7, characterized in that: The housing is also provided with a plurality of concave cavities, which penetrate the outer shell to one side of the inner wall of the outer shell and extend toward the middle of the connecting block, and each of the concave cavities is communicated with the sealing chamber.

9. The anti-fall coding adjustment device according to claim 8, characterized in that: The inner wall of the sealing chamber, the inner wall of the concave cavity, the inner wall of the cover assembly and the outer wall of the support ring are all provided with patterns for reducing noise.

10. A sound box, characterized in that: It comprises the anti-fall-resistant coding adjustment device as described in any one of claims 1 to 9.

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