Horn sound cavity structure with high tone quality effect and portable printer

Abstract

The utility model provides a loudspeaker sound cavity structure with a high tone quality effect and a portable printer, and the structure comprises a side wall which is disposed based on the inner side wall of a printer housing, and the inner side of the side wall is provided with a sound cavity with an opening at the upper end; the sound transmission hole is formed in the printer shell, is communicated with the sound cavity and is used for emitting sound; the bottom pad structure is arranged at the bottom of the sound cavity; the loudspeaker unit is movably cushioned at the upper end of the bottom cushion structure and divides the sound cavity into a front sound cavity and a rear sound cavity; the loudspeaker cavity rear cover is arranged at the top of the side wall, and the lower end of the loudspeaker cavity rear cover is provided with a pressing part extending downwards; wherein the pressing part is used for enabling the loudspeaker unit to movably abut against the bottom pad structure, so that the front sound cavity and the rear sound cavity are separated to be in a relatively sealed state, the sound quality of the loudspeaker unit can be effectively improved by arranging the independent loudspeaker front sound cavity and the independent loudspeaker rear sound cavity, noise is reduced, and the distinguishing degree of high audio frequency and low audio frequency is enhanced; therefore, better auditory feedback experience is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of sound cavity structures, in particular to a speaker sound cavity structure with high sound quality and a portable printer. Background Art

[0002] In the prior art, printers are usually equipped with speaker units to provide basic sound feedback functions, such as print job completion prompts or device status notifications. However, most of these speaker units are limited by their built-in design and compact space constraints, resulting in generally poor sound quality. Specifically, due to the physical structure of the speaker unit itself and the limitations of the installation position, the generated sound is often accompanied by noise and lacks clear high and low audio differentiation, thus affecting the overall sound quality performance.

[0003] In addition, with the improvement of the requirements for user experience in the modern office environment, users not only expect to obtain efficient and high-quality printing services, but also hope that these devices can provide a more pleasant auditory feedback experience.

[0004] In view of this, the inventor has specifically designed a speaker sound cavity structure with high sound quality and a portable printer, and this case is thus generated. Summary of the Utility Model

[0005] In order to solve the above problems, one of the technical solutions of the utility model is as follows:

[0006] A speaker sound cavity structure with high sound quality, comprising:

[0007] A side wall, arranged based on the inner side wall of the printer housing, and a sound cavity with an upper end opening is formed inside it;

[0008] A sound transmission hole, arranged on the printer housing and communicating with the sound cavity for sound output;

[0009] A bottom pad structure, arranged at the bottom of the sound cavity;

[0010] A speaker unit, movably padded on the upper end of the bottom pad structure and partitioning the sound cavity into a front sound cavity and a rear sound cavity;

[0011] A speaker cavity rear cover, arranged at the top of the side wall, and a pressing part extending downward is provided at its lower end;

[0012] Wherein, the pressing part is used to movably press the speaker unit against the bottom pad structure so that the front sound cavity and the rear sound cavity are partitioned into a relatively sealed state.

[0013] Preferably, the pressing part is columnar.

[0014] Preferably, a hollow groove which is columnar and has an opening downward is arranged inside the pressing part.

[0015] Preferably, the pressing part is arranged in the middle of the rear cover of the horn cavity.

[0016] Preferably, the rear cover of the horn cavity includes a bottom cover and a limiting edge. The limiting edge is arranged around the circumferential edge of the bottom surface of the bottom cover and is adapted to the shape of the inner side of the upper opening of the side wall. A limiting groove is formed between the limiting edge and the circumferential side wall of the bottom cover.

[0017] Preferably, it further includes a flexible sealing strip arranged around the limiting groove. When the rear cover of the horn cavity is pressed against the upper opening of the side wall, the flexible sealing strip is pressed between the bottom cover and the top of the side wall.

[0018] Preferably, the bottom pad structure is a closed structure arranged around the bottom edge of the side wall. A hollow area communicating with the sound transmission holes is formed inside the closed structure. A flat surface that can be smoothly attached to the lower end surface of the horn unit is formed at the upper end of the closed structure. The sound output area of the horn unit is limited within the hollow area.

[0019] Preferably, there is a gap between the outer edge of the bottom pad structure and the side wall, and the circumferential side of the bottom pad structure is limitedly connected to the inner side wall of the side wall through a plurality of connecting ribs.

[0020] Preferably, the cross-section of the side wall, the cross-section of the sound cavity, the horn unit, and the rear cover of the horn cavity are all elliptical with suitable shapes and sizes.

[0021] The second technical solution of the present utility model is as follows:

[0022] A portable printer includes the above-mentioned horn sound cavity structure.

[0023] The beneficial effects of the present utility model are as follows:

[0024] By providing an independent front sound cavity and rear sound cavity for the horn, the present utility model can effectively improve the sound quality of the horn unit, reduce noise, and enhance the distinction between high and low audio frequencies, thereby providing a better auditory feedback experience.

[0025] Among them, the horn unit is movably cushioned on the bottom pad structure and fixed by the pressing part of the rear cover of the horn cavity to ensure that the front and rear sound cavities are in a relatively sealed state, which helps to improve the purity and clarity of the sound.

[0026] In addition, the limiting edge is adapted to the upper opening of the side wall, and with the application of the flexible sealing strip, the overall stability and good airtightness of the structure are ensured.

[0027] In particular, the connection between components is simple and reliable, which is convenient for production assembly and later maintenance.

[0028] In addition, in an office environment, better sound feedback can improve user satisfaction, especially in cases of long-term use or frequent receipt of sound prompts.

[0029] In summary, through the improvement of the built-in speaker unit system of the traditional printer, the present utility model not only improves the sound quality, but also enhances the overall performance and user experience of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model.

[0031] Wherein:

[0032] Figure 1 is a three-dimensional structural schematic diagram highlighting the sound transmission holes on the outer side wall of the printer housing in the first embodiment of the present utility model;

[0033] Figure 2 is a three-dimensional structural schematic diagram highlighting the sound cavity structure on the inner side wall of the printer housing in the first embodiment of the present utility model;

[0034] Figure 3 is a three-dimensional exploded structural schematic diagram highlighting the sound cavity structure in the first embodiment of the present utility model;

[0035] Figure 4 is an exploded structural schematic diagram highlighting the speaker unit and the back cover of the speaker cavity in the first embodiment of the present utility model;

[0036] Figure 5 is a sectional structural schematic diagram highlighting the sound cavity structure in the first embodiment of the present utility model;

[0037] Figure 6 is a top view structural schematic diagram highlighting the bottom pad structure in the first embodiment of the present utility model;

[0038] Figure 7 is a partial three-dimensional and sectional structural schematic diagram highlighting the bottom pad structure in the first embodiment of the present utility model.

[0039] Reference Numeral Description:

[0040] 10. Side wall; 11. Sound cavity; 12. Front sound cavity; 13. Rear sound cavity; 14. Wiring groove; 15. First guiding surface; 16. Locking shaft; 17. Locking bolt; 20. Sound transmission hole; 30. Bottom pad structure; 31. Hollowed-out area; 32. Connecting rib; 40. Speaker unit; 41. Sound output area; 42. Sound output hole; 43. Compressing foam; 50. Rear cover of speaker cavity; 51. Bottom cover; 52. Limiting edge; 521. Second guiding surface; 53. Limiting groove; 54. Compressing part; 541. Hollow groove; 542. Chamfer; 55. Locking ear; 60. Flexible sealing strip; 70. Printer housing; 80. Speaker sound transmission film. Detailed implementation manners

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0042] A speaker sound cavity structure with high sound quality effect and a portable printer disclosed by the present utility model will be specifically described below for the speaker sound cavity 11 structure and the portable printer through two embodiments respectively.

[0043] Embodiment 1

[0044] Please refer to Figures 1 to 7 , which is a speaker sound cavity structure with high sound quality effect as the best embodiment of the present utility model, including: side wall 10, sound transmission hole 20, bottom pad structure 30, speaker unit 40 and rear cover 50 of speaker cavity.

[0045] Among them, the side wall 10 is a surrounding closed structure with an elliptical cross-section and is integrally provided on the inner side wall of the printer housing 70. As the installation base of the speaker unit 40, the inner side of the side wall 10 and the inner side wall of the printer housing 70 enclose a sound cavity 11 with an open upper end;

[0046] The sound transmission hole 20 is penetrated and opened on the printer housing 70 and is located at the bottom of the sound cavity 11 for conducting inside and outside the sound cavity 11 and outputting sound;

[0047] In this embodiment, the sound transmission hole 20 is waist-shaped and is divided into two large and two small ones. The two smaller sound transmission holes 20 are distributed on both sides, and the two larger sound transmission holes 20 are distributed in the middle. The four sound transmission holes 20 are inclined and parallelly distributed, so as to form a certain shape while meeting the sound output requirements.

[0048] The bottom pad structure 30 is elliptical in shape adapted to the side wall 10, is integrally formed on the inner side wall of the printer housing 70 and is located at the bottom of the sound cavity 11 for raising the speaker unit 40 to form upper and lower partitions;

[0049] The speaker unit 40 is movably disposed on the upper end of the bottom pad structure 30 and divides the sound cavity 11 into a front sound cavity 12 and a rear sound cavity 13.

[0050] Among them, in this embodiment, the speaker unit 40 also presents an oval shape adapted to the shape of the side wall 10, and its edge is adapted to the inner wall of the sound cavity 11, so as to fit with the side wall of the sound cavity 11 in the sound cavity 11 and divide the sound cavity 11 into upper and lower parts of the front sound cavity 12 and the rear sound cavity 13.

[0051] In order to further improve the sealing effect of the front sound cavity 12 and the rear sound cavity 13, a speaker cavity rear cover 50 is further included. The shape of the speaker cavity rear cover 50 also presents an oval shape adapted to the shape of the side wall 10. The speaker cavity rear cover 50 is covered on the top of the side wall 10 and just can form a continuous flat surface with the outer side wall of the side wall 10, and its lower end has a pressing portion 54 extending downward.

[0052] Among them, the pressing portion 54 is used to movably press the speaker unit 40 against the bottom pad structure 30, so that the front sound cavity 12 and the rear sound cavity 13 are separated into a relatively sealed state.

[0053] Particularly, in order to realize the locking and fixing of the speaker cavity rear cover 50, a pair of locking shafts 16 are arranged at the inner side wall of the printer housing 70 and at the diagonal positions on both sides of the side wall. Two locking ears 55 are formed at the positions of the two sides of the speaker cavity rear cover 50 corresponding to the two locking shafts 16. The two locking ears 55 are locked and fixed on the locking shafts 16 through a pair of locking bolts 17, so as to facilitate the locking and fixing process of the speaker cavity rear cover 50.

[0054] Preferably, as Figure 3 、 4 shown, the pressing portion 54 is columnar, a hollow groove 541 which is columnar and has an opening downward is arranged in the pressing portion 54, and the pressing portion 54 is arranged in the middle of the speaker cavity rear cover 50. In this embodiment, a circle of inclined chamfers 542 are arranged at the opening end of the pressing portion 54 and on its outer peripheral side.

[0055] Thus, through the columnar hollow pressing portion 54, the purpose of pressing the speaker unit 40 against the bottom pad structure 30 can be easily realized, so as to facilitate the formation of a relatively sealed front sound cavity 12 and rear sound cavity 13. The pressing portion 54 and the speaker cavity rear cover 50 are integrally formed. The pressing portion 54 with the hollow groove 541 can save injection molding materials on the one hand, and is also convenient for molding and demolding on the other hand.

[0056] Preferably, as Figure 4 、 5As shown, the rear cover 50 of the horn cavity includes a bottom cover 51 and a limiting edge 52. The limiting edge 52 is arranged around the peripheral edge of the bottom surface of the bottom cover 51 and is adapted to the shape of the inner side of the upper opening of the side wall 10. A limiting groove 53 is formed between the limiting edge 52 and the peripheral side wall 10 of the bottom cover 51. In this embodiment, the bottom cover 51 is an oval shape that is the same as the outer peripheral edge of the side wall 10. The limiting edge 52 is an oval structure that protrudes integrally downward from the bottom surface of the bottom cover 51 and is similar to the shape of the bottom cover 51. The limiting edge 52 is centered on the bottom surface of the bottom cover 51 and is smaller in size than the bottom cover 51. Thus, a limiting groove 53 with two open sides is formed between the outer peripheral side of the limiting edge 52 and the outer peripheral edge of the bottom cover 51. The limiting groove 53 is in an oval shape that is arranged around the peripheral edge of the limiting edge 52, and the peripheral edge of the limiting edge 52 is set to exactly fit the upper opening of the side wall 10. Thus, the effect of snapping the rear cover 50 of the horn cavity into the upper opening of the side wall 10 can be achieved, facilitating the installation of the rear cover 50 of the horn cavity and the pressing and fixing of the horn unit 40.

[0057] Preferably, as Figure 4 、 5 shown, it further includes a flexible sealing strip 60 arranged around the limiting groove 53. When the rear cover 50 of the horn cavity is pressed and fitted to the upper opening of the side wall 10, the flexible sealing strip 60 is pressed and fitted between the bottom cover 51 and the top of the side wall 10. In this embodiment, the flexible sealing strip 60 is a sealing foam or felt strip that has the same shape as the limiting groove 53 and can be snapped into the limiting groove 53. Thus, with the flexible sealing strip 60 as the intermediate medium for sealing, when the rear cover 50 of the horn cavity is closed on the upper opening of the side wall 10, the limiting edge 52 is snapped into the inner wall of the upper opening of the side wall 10, and the flexible sealing strip 60, together with the limiting groove 53, is pressed and fitted to the upper edge of the side wall 10 by the lower end surface of the bottom cover 51. As the bottom cover 51 is pressed downward, the flexible sealing strip 60 makes an adaptive elastic deformation, thereby tightly sealing the upper opening of the side wall 10, enabling the rear sound cavity 13 to form a sealed area, and together with the front sound cavity 12, effectively improving the sound quality of the horn unit 40, reducing noise and enhancing the differentiation of high and low audio frequencies, thereby providing a better auditory feedback experience.

[0058] Preferably, as Figure 6 、 7As shown, the bottom pad structure 30 is a closed structure provided around the bottom edge of the side wall 10. An empty area 31 communicating with the sound transmission holes 20 is formed inside the closed structure. A flat surface that can be smoothly attached to the lower end surface of the speaker unit 40 is formed at the upper end of the closed structure. The sound output area 41 of the speaker unit 40 is restricted within the empty area 31. In this embodiment, the shape of the bottom pad structure 30 is adapted to the shape of the side wall 10 and is also oval, and its size is smaller than the inner wall of the side wall 10. The sound output area 41 of the speaker unit 40 is oval. The sound output holes 42 of the speaker unit 40 are all arranged within the sound output area 41. The size of the sound output area 41 is set to be equal to or smaller than the inner area of the bottom pad structure 30. Thus, when the speaker unit 40 is pressed by the pressing part 54 of the speaker cavity rear cover 50 onto the bottom pad structure 30, the periphery of the speaker unit 40 contacts the inner side wall of the sound cavity 11 to form a preliminary seal. The sound output area 41 is then restricted within the inner area of the bottom pad structure 30. A further sealed area, namely the front sound cavity 12, is formed by being jointly enclosed by the inner wall of the printer housing 70, the inner side wall of the bottom pad structure 30, and the sound output area 41. Thus, better bass and treble effects are achieved through the relatively sealed front sound cavity 12 and rear sound cavity 13, providing a better auditory feedback experience for users.

[0059] Preferably, as Figure 6 , 7 shown, there is a gap between the outer edge of the bottom pad structure 30 and the side wall 10, and the periphery of the bottom pad structure 30 is connected and limited to the inner side wall of the side wall 10 through a plurality of connecting ribs 32. In this embodiment, the number of connecting ribs 32 is 4 and they are evenly and symmetrically distributed around the periphery of the bottom pad structure 30.

[0060] Particularly, as Figure 7 shown, in order to realize the wiring of the speaker unit 40, a wiring groove 14 is formed by the top of the side wall 10 sinking downward. The wiring groove 14 is used to communicate the inner and outer spaces of the sound cavity 11 so that the wiring of the speaker unit 40 is introduced into the rear sound cavity 13 from the outside through the wiring groove 14, realizing the wiring of the speaker unit 40. And in order to ensure the sealing effect of the rear sound cavity 13, the upper end of the wiring groove 14 is tightly sealed by the flexible sealing strip 60. Hot melt adhesive can also be applied on the outside of the wiring to tightly fill the wiring groove 14, or through a flexible block such as a silicone block, etc. The wiring is passed through the flexible block, and then the flexible block is stuffed into the wiring groove 14 to realize the sealing effect by relying on the extrusion deformation of the flexible block.

[0061] In addition, as Figure 4 , 7 shown, in order to further facilitate the insertion of the speaker cavity rear cover 50 into the opening at the upper end of the side wall 10, an inclined first guiding surface 15 is provided at the inner edge of the upper end of the side wall 10, and a second guiding surface 521 parallel to and cooperating with the first guiding surface 15 is provided at the outer edge of the end of the limiting edge 52.

[0062] Specifically, in order to enhance the waterproof effect of the speaker unit 40, a speaker sound-permeable film 80 is covered and provided at the position of the sound-permeable hole 20 in the front sound cavity 12, and a sound-permeable groove 81 that can cover a region of several sound-permeable holes 20 is recessed on the side of the speaker sound-permeable film 80 close to the sound-permeable hole 20, so as to not only maintain a certain sound-permeable effect but also achieve the waterproof function.

[0063] In addition, in order to further enhance the blocking effect between the front sound cavity and the rear sound cavity, an oval pressing foam 43 is pasted on the lower end surface of the speaker unit 40. In this embodiment, the sound output region 41 is partitioned and formed by the inner side of the pressing foam 43. Thus, when the lower end of the speaker unit 40 is pressed and combined with the bottom pad structure 30, a further isolation effect can be achieved through the pressing foam 43, so as to achieve a better high and low sound effect of the front and rear sound cavities.

[0064] Embodiment 2

[0065] A portable printer includes the speaker sound cavity 11 structure in Embodiment 1. A side wall 10, a bottom pad structure 30, and sound-permeable holes 20 are integrally formed inside the housing of the printer. An additional speaker unit 40, a speaker cavity rear cover 50, and a flexible sealing strip 60 are sequentially placed into the sound cavity 11 inside the side wall 10 to complete the installation of the sound cavity 11 structure.

[0066] The beneficial effects of the present utility model are as follows:

[0067] By providing an independent front speaker sound cavity 12 and a rear sound cavity 13, the present utility model can effectively improve the sound quality of the speaker unit 40, reduce noise, and enhance the differentiation of high and low audio frequencies, thereby providing a better auditory feedback experience.

[0068] Among them, the speaker unit 40 is movably cushioned on the bottom pad structure 30 and fixed by the pressing portion 54 of the speaker cavity rear cover 50 to ensure that the front and rear sound cavities 13 are in a relatively sealed state, which helps to improve the purity and clarity of the sound.

[0069] In addition, the limiting edge 52 is adapted to the upper end opening of the side wall 10. Coupled with the application of the flexible sealing strip 60, the overall stability of the structure and good airtightness are ensured.

[0070] Specifically, the connection between each component is simple and reliable, which is convenient for production assembly and later maintenance.

[0071] In addition, in an office environment, better sound feedback can improve user satisfaction, especially in the case of long-term use or frequent receipt of sound prompts.

[0072] In summary, by improving the built-in speaker unit 40 system of the traditional printer, the present utility model not only improves the sound quality but also enhances the overall performance and user experience of the product.

[0073] The above has made an exemplary description of the present utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above-mentioned manner. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A speaker cavity structure with high sound quality, characterized in that: include: A side wall (10) is arranged based on the inner wall of the printer housing (70), and a sound cavity (11) with an upper end opening is formed on the inner side of the side wall; A sound-transmitting hole (20) is provided in the printer housing (70) and communicates with the sound cavity (11) for producing sound; A bottom pad structure (30) is arranged at the bottom of the sound cavity (11); A speaker unit (40), the movable pad is arranged on the upper end of the bottom pad structure (30) and divides the sound cavity (11) into a front sound cavity (12) and a rear sound cavity (13); The speaker cavity rear cover (50) is arranged on the top of the side wall (10), and has a downwardly extending pressing portion (54) at its lower end; The pressing portion (54) is used to flexibly press the speaker unit (40) against the base structure (30) so that the front sound cavity (12) and the rear sound cavity (13) are separated into a relatively sealed state.

2. A speaker cavity structure with high sound quality according to claim 1, characterized in that: The pressing portion (54) is columnar.

3. A speaker cavity structure with high sound quality according to claim 2, characterized in that: The pressing portion (54) is provided with a hollow groove (541) which is columnar and opens downward.

4. A speaker cavity structure with high sound quality according to claim 1, characterized in that: The pressing portion (54) is arranged in the middle of the speaker cavity rear cover (50).

5. A speaker cavity structure with high sound quality according to claim 1, characterized in that: The speaker cavity rear cover (50) comprises a bottom cover (51) and a limiting edge (52), wherein the limiting edge (52) is arranged around the peripheral edge of the bottom surface of the bottom cover (51) and is adapted to the shape of the inner side of the upper end opening of the side wall (10), and a limiting groove (53) is formed between the limiting edge (52) and the peripheral side wall (10) of the bottom cover (51).

6. A speaker cavity structure with high sound quality according to claim 5, characterized in that: It also includes a flexible sealing strip (60) arranged around the limiting groove (53); when the speaker cavity rear cover (50) is pressed onto the upper opening of the side wall (10), the flexible sealing strip (60) is pressed between the bottom cover (51) and the top of the side wall (10).

7. A speaker cavity structure with high sound quality according to claim 1, characterized in that: The base pad structure (30) is a closed structure arranged around the bottom edge of the side wall (10), and a hollow area (31) connected to the sound-permeable hole (20) is formed on the inner side of the closed structure. The upper end of the closed structure forms a flat surface that can be evenly fitted with the lower end surface of the speaker unit (40), and the sound output area of ​​the speaker unit (40) is limited to the hollow area (31).

8. A speaker cavity structure with high sound quality according to claim 7, characterized in that: There is a gap between the outer edge of the bottom pad structure (30) and the side wall (10), and the circumference of the bottom pad structure (30) is position-limitingly connected to the inner wall of the side wall (10) via a plurality of connecting ribs (32).

9. A speaker sound cavity structure with high sound quality according to any one of claims 1 to 8, characterized in that: The cross section of the side wall (10), the cross section of the sound cavity (11), the speaker unit (40) and the speaker cavity rear cover (50) are all ellipses with corresponding shapes and sizes.

10. A portable printer, characterized in that: It comprises the speaker sound cavity (11) structure as claimed in claim 1.

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