CN215956538U - Bass air pipe and projector sound box - Google Patents

Abstract

The utility model relates to a low-pitch air pipe and a projector sound, wherein the low-pitch air pipe comprises an air pipe outlet, two air pipe inlets and an air pipe for connecting the air pipe inlets and the air pipe outlet, the air pipe inlets comprise a first air pipe inlet and a second air pipe inlet, and the distance from the first air pipe inlet to one loudspeaker is equal to the distance from the second air pipe inlet to the other loudspeaker. The bass air pipe provided by the technical scheme is provided with the first air pipe air port and the second air pipe inlet which are respectively corresponding to one loudspeaker, so that the stable air flow is ensured, and a good bass effect is achieved by using the bass air pipe; when the bass wind pipe is applied to the projector sound, the bass wind pipe is combined with the sound mounting frame, so that the volume of the sound is not additionally increased; and, the bass tuber pipe communicates the appearance chamber and the outside of stereo set mounting bracket, and when loudspeaker vibrate, the air current that holds the intracavity gets into the tuber pipe import that corresponds respectively, and is comparatively stable, and the bass is effectual.

Description

Bass air pipe and projector sound box

Technical Field

The utility model relates to the technical field of sound structures, in particular to a bass wind pipe and a projector sound.

Background

The existing projector comprises a projection lens assembly and a sound assembly, and audio and video playing is realized. Then, due to the limitation of the volume of the projector, the size of the sound assembly is generally small, and the size of the horn in the sound assembly is also relatively small, that is, the aperture of the horn diaphragm is small. The aperture of the loudspeaker diaphragm is directly related to the bass texture of the loudspeaker, so that the bass texture of the projector is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a bass wind pipe and a projector sound box.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a bass tuber pipe, includes a tuber pipe export, two tuber pipe imports and connects the tuber pipe import with the tuber pipe export the tuber pipe way, the tuber pipe import includes first tuber pipe import and second tuber pipe import, first tuber pipe import to a loudspeaker the distance with the distance of second tuber pipe import to another loudspeaker equals.

Preferably, the inlet of the blast pipe is trumpet-shaped.

Preferably, the air duct includes a first air duct corresponding to the inlet of the first air pipe, a second air duct corresponding to the inlet of the second air pipe, and a third air duct corresponding to the outlet of the air pipe, and the first air duct and the second air duct are symmetrically arranged and are communicated with each other through the third air duct.

Preferably, the sub-woofer duct further comprises a first side wall forming a first air duct and a second side wall forming a second air duct, a connection between the first side wall and the second side wall protruding towards the third air duct such that an angle between the first air duct and the second air duct is less than 180 °.

In order to achieve the purpose, the utility model also adopts the following technical scheme:

a projector sound, comprising:

a sound body having two speakers;

the sound installation frame is used for fixing the sound body and is provided with a containing cavity for containing the sound body and a loudspeaker hole matched with a loudspeaker; the low-pitch air pipe is arranged at the upper part of the sound installation rack and communicated with the outside of the sound installation rack and the containing cavity; two tuber pipe imports of bass tuber pipe correspond one respectively loudspeaker, and reach and correspond loudspeaker's distance equals.

Preferably, the air duct outlet is located between the two trumpet holes, and the orientation of the air duct outlet is consistent with the orientation of the trumpet holes.

Preferably, the bass wind pipe and the sound installation rack are of an integrated structure.

Preferably, the stereo set mounting bracket includes upper portion and lower part, upper portion with the connection can be dismantled to the lower part, upper portion with the relative edge in lower part has the joint structure, the joint structure includes sand grip and recess, the sand grip with one in the recess is located upper portion, another is located the lower part, just the sand grip with the recess sets up relatively, the sand grip embedding makes in the recess upper portion with the lower part joint is fixed.

Preferably, the projector audio further comprises a shock absorbing member for connecting the audio mount and the housing; the damping component comprises a first damping piece and a second damping piece, the outer wall of the sound installation frame is provided with an installation seat, and the installation seat is fixedly connected with the shell through the first damping piece and the second damping piece.

Preferably, the mounting seat comprises a positioning hole, a gap is formed in one side of the positioning hole, the first damping part is made of an elastic material and comprises a first gasket, a second gasket, a connecting column and a first fixing hole, the connecting column is used for connecting the first gasket and the second gasket, the first fixing hole penetrates through the first gasket, the second gasket and the connecting column, and the diameter of the connecting column is matched with that of the positioning hole and is larger than the width of the gap; the diameters of the first gasket and the second gasket are larger than the diameter of the positioning hole;

the end faces of the first gasket and the second gasket are provided with a plurality of convex blocks and concave parts which are alternately arranged;

the second damping piece is made of an elastic material and comprises a concave cavity for accommodating the shell positioning column and a second fixing hole corresponding to the first fixing hole; the abutting surface of the second damping piece facing the first damping piece is a plane.

Compared with the prior art, the utility model has the beneficial effects that:

the bass air duct provided in the technical scheme is provided with two air duct inlets, namely a first air duct air port and a second air duct inlet, which respectively correspond to one loudspeaker, and the distances from the two air duct inlets to the corresponding loudspeakers are the same, namely the distance from the first air duct inlet to one loudspeaker is equal to the distance from the second air duct inlet to the other loudspeaker, so that a good bass effect is achieved by using the bass air duct; when the bass wind pipe is applied to the projector sound, the bass wind pipe is combined with the sound mounting frame, so that the volume of the sound is not additionally increased; and, the bass tuber pipe communicates the appearance chamber and the outside of stereo set mounting bracket, and when loudspeaker vibrate, the air current that holds the intracavity gets into the tuber pipe import that corresponds respectively, and is comparatively stable, and the bass is effectual.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a front view of a sub-woofer duct provided in an embodiment of the present invention.

Fig. 2 is a schematic structural view of the sub-woofer duct shown in fig. 1.

Fig. 3 is a schematic structural diagram of a projector audio provided in the embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of the projector audio shown in fig. 3.

Fig. 5 is a schematic structural view of the bass duct combined with the upper part according to the embodiment of the present invention.

Fig. 6 is an exploded view of the projector audio shown in fig. 3.

Description of reference numerals:

10. a bass wind pipe; 11. an outlet of the air pipe; 12. an air duct; 121. a first side wall; 122. a first air duct; 123. a second side wall; 124. a second air duct; 125. a connecting portion; 126. a third air duct; 13. a first air duct inlet; 14. a second air duct inlet; 20. a sound installation rack; 21. an upper portion; 22. A lower portion; 23. a horn hole; 24. a cavity; 25. a mounting seat; 251. positioning holes; 252. a notch; 30. A first damper; 301. a first gasket; 302. a second gasket; 303. connecting columns; 304. a first fixing hole; 305. a bump; 306. recessing; 31. a second damping member; 311. a second fixing hole; 312. an abutting surface; 32. a fastener; 40. a sound body; 41. a horn.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and fig. 2, the embodiment of the present invention provides a bass wind pipe, which includes a wind pipe outlet 11, two wind pipe inlets, and a wind pipe 12 connecting the wind pipe inlet and the wind pipe outlet 11, wherein the wind pipe inlet includes a first wind pipe inlet 13 and a second wind pipe inlet 14, a distance from the first wind pipe inlet 13 to one loudspeaker 41 is equal to a distance from the second wind pipe inlet 14 to another loudspeaker 41, and a good bass effect is achieved by using the bass wind pipe 10. When the speaker 41 vibrates in the cavity 24, the internal and external air of the bass wind pipe 10 is circulated, so that the sound wave of the low frequency band of the speaker is effectively extended, and the speaker has deeper bass and better tone quality.

Preferably, the inlet of the air duct is trumpet-shaped, as shown in figure 1, the first air duct inlet 13 and the second air duct inlet 14 are both trumpet-shaped, so that sound waves can conveniently enter the inlet of the air duct, the common-frequency bass effect of the trumpet-shaped wave band is better, and the distortion is reduced.

Preferably, the bass duct 10 corresponds to the sound structure having two speakers, and in order to ensure that the distance from the duct inlet to the corresponding speaker is equal, the bass duct 10 is located between the two speakers, so that, as shown in fig. 1, the air ducts include a first air duct 122 corresponding to the first duct inlet 13, a second air duct 124 corresponding to the second duct inlet 14, and a third air duct 126 corresponding to the duct outlet 11, and the first air duct 122 and the second air duct 124 are symmetrically disposed and both communicate with the third air duct 126. The first air duct 122 and the second air duct 124 are both of a structure with a large outer diameter and a small inner diameter, which is beneficial for sound waves to enter the first air duct inlet 13 and the second air duct inlet 14. As shown in fig. 2, a first side wall 121 forming a first wind tunnel 122 and a second side wall 123 forming a second wind tunnel 124 are provided. Because first wind pipeline 122 and second wind pipeline 124 symmetry set up, for avoiding the direct conflict of the sound wave that gets into from first tuber pipe import 13 and the sound wave that gets into from second tuber pipe import 14, connecting portion 125 between first lateral wall 121 and the second lateral wall 123 is outstanding towards third wind pipeline 126, make the contained angle between first wind pipeline 122 and the second wind pipeline 124 be less than 180, first wind pipeline 122 is to the smooth transition of third wind pipeline 126, second wind pipeline 124 thinks the smooth transition of third wind pipeline 126, guarantee that the air current is unobstructed, it receives the inner wall to hinder to reduce the air current. Preferably, the length of the wind pipeline is 1/5-1/3, preferably 1/4, corresponding to the wavelength corresponding to the resonance frequency of the horn.

As shown in fig. 3 to 6, an embodiment of the present invention provides a projector audio, including an audio body 40 and an audio mounting bracket 20; the sound equipment of sound body 40 promptly goes out sound equipment includes loudspeaker and stereo circuit etc. and sound mounting bracket 20 is used for fixed sound body 40, makes sound body 40 remain stable, has good play sound effect. As shown in fig. 4, the acoustic mount 20 has a cavity 24 for accommodating the acoustic body 40 and a horn hole 23 adapted to the horn; simultaneously, have bass tuber pipe 10 on the stereo set mounting bracket 20, bass tuber pipe 10 intercommunication stereo set mounting bracket 20 is outside and hold chamber 24, and loudspeaker arouse the inside and outside circulation of gas of bass tuber pipe 10 when holding chamber 24 vibration, and then make the sound wave of the low frequency range of loudspeaker obtain extending effectively, have more deep bass, obtain better tone quality effect.

Specifically, the sub-woofer duct 10 has a duct outlet 11, a duct, and a duct inlet. As shown in fig. 4, the first ductwork inlet 13 and the second ductwork inlet 14 are exposed in the cavity 24 and communicate with the cavity 24; as shown in FIG. 3, the air duct outlet 11 is communicated with the outside, and the air duct is communicated with the air duct inlet and the air duct outlet 11. Preferably, the direction of the air duct outlet 11 is the same as the direction of the horn hole 23, so that the sound wave coming out of the air duct outlet 11 is superposed with the sound wave of the horn in a positive phase in a frequency range near the resonant frequency of the horn, thereby effectively extending the sound wave of a low frequency range and having a better bass effect; meanwhile, the amplitude of the frequency band loudspeaker near the resonance frequency of the loudspeaker can be reduced, so that the loudspeaker can bear higher power, obtain higher loudness, overcome the problems of small sound and large vibration of the projector, and be favorable for improving the sound and picture quality of the projector.

Preferably, as shown in fig. 4, in the present embodiment, the sound body 40 includes two speakers, the number of the speaker holes 23 corresponds to two, and the duct outlet 11 is located between the speaker holes 23 and is equal to the distance between the two speakers, so as to realize positive superposition of sound waves of the two speakers, and further improve the bass effect.

In the present embodiment, as shown in fig. 5, the sub-woofer duct 10 and the audio mount 20 are integrally formed, and specifically, the sub-woofer duct 10 is disposed on the upper portion 21 of the audio mount 20, and the sub-woofer duct 10 is directly manufactured when the upper portion 21 is processed. The bass duct 10 in this embodiment is square in cross-section, and in other embodiments, the bass duct 10 may be circular in cross-section.

In other embodiments, the sub-woofer 10 includes a duct slot and a duct cover, and the sub-woofer 10 is formed by: the upper part 21 of the sound installation rack 20 is provided with a first groove, the first groove is an air duct groove, and the cross section of the first groove is semicircular; the air pipe cover is matched with the first groove in shape and provided with a second groove, the cross section of the second groove is semicircular, when the air pipe cover is arranged on the first groove, the first groove and the second groove form an air pipeline, and the air pipe cover is fixedly connected with the upper portion 21. Preferably, the air pipe cover is pressed on the first groove through ultrasonic waves, and the air tightness of the air pipeline is guaranteed. This kind of structure is convenient carries out the finish machining to the inner wall of wind pipeline, further promotes the smoothness of inner wall, promotes the bass quality.

The sound mounting bracket 20 of the present embodiment includes an upper portion 21 and a lower portion 22, the upper portion 21 and the lower portion 22 are detachably connected, and a cavity 24 is formed inside the upper portion 21 and the lower portion 22 for placing the sound body 40, which facilitates installation and maintenance of the sound body 40.

Except for ensuring the air tightness of the air pipeline, the sound structure of the embodiment also requires that the cavity 24 of the sound mounting rack 20 has certain tightness, and the tightness is not high in requirement and can be realized through a clamping structure. Specifically, the relative edge of upper portion 21 and lower part 22 has the joint structure, and the joint structure includes sand grip and embedded groove, and one in sand grip and the embedded groove is located upper portion 21, and another is located lower part 22, and sand grip and embedded groove set up relatively, and it is fixed with lower part 22 joint to make upper portion 21 in the sand grip embedding embedded groove. In the present embodiment, as shown in fig. 6, the convex strip is located at the edge of the upper portion 21, and the fitting groove is located at the edge of the lower portion 22.

During the installation, earlier with loudspeaker, stereo set control circuit, bass vibrating diaphragm isotructure and loudspeaker mounting bracket fixed connection, then with loudspeaker mounting bracket and lower part 22 fixed connection, close upper portion 21 and lower part 22 again, sand grip embedding embedded groove, tentatively fixed upper portion 21 and lower part 22, at last with loudspeaker mounting bracket and upper portion 21 fixed connection.

The sound mounting bracket 20 further includes an outlet located on a side of the sound mounting bracket 20 away from the horn for leading the wiring harness of the sound body 40 out of the sound mounting bracket 20. Based on the split type structure of stereo set mounting bracket 20, upper portion 21 has the first half hole of being qualified for the next round of competitions, and lower part 22 has the second half hole of being qualified for the next round of competitions, and the first half hole of being qualified for the next round of competitions and the second half hole of being qualified for the next round of competitions form the outlet after upper portion 21 folds fixedly with lower part 22, can set up pencil fastener 32 on the pencil, and the first half hole of being qualified for the next round of competitions and the second half hole of being qualified for the next round of competitions are in the middle of with pencil fastener 32 centre gripping, guarantee the stable connection of pencil.

The speaker is a main vibration unit of the sound structure, and transmits vibration to the casing through the sound mounting bracket 20, so as shown in fig. 3 and 6, the sound mounting structure of the present embodiment further includes a damping component for connecting the sound mounting bracket 20 and the casing; specifically, the damping assembly comprises a first damping member 30 and a second damping member 31, the outer wall of the sound mounting bracket 20 is provided with a mounting seat 25, and the mounting seat 25 is fixedly connected with the shell through the first damping member 30 and the second damping member 31.

The first shock absorbing member 30 is substantially i-shaped, and includes a first gasket 301, a second gasket 302, a connecting column 303 connecting the first gasket 301 and the second gasket 302, and a first fixing hole 304 penetrating through the first gasket 301, the second gasket 302 and the connecting column 303, wherein the connecting column 303 in the middle is disposed in a positioning hole 251 of the mounting seat 25, specifically, as shown in fig. 6, the mounting seat 25 includes a positioning hole 251, one side of the positioning hole 251 has a notch 252, the first shock absorbing member 30 is made of an elastic material, the diameter of the connecting column 303 is matched with the diameter of the positioning hole 251, and is greater than the width of the notch 252, when in mounting, the connecting column 303 is squeezed into the positioning hole 251 of the mounting seat 25 from the notch 252, and the connecting column 303 can be properly deformed and then restored. The diameters of the first gasket 301 and the second gasket 302 are larger than the diameter of the positioning hole 251, and the first gasket 301 and the second gasket 302 respectively abut against the upper surface and the lower surface of the mounting seat 25. The first gasket 301 and the second gasket 302 are made of high-elasticity materials, and have good shock absorption and buffering functions. Preferably, the end surfaces of the first and second spacers 301 and 302 have a plurality of protrusions 305 and depressions 306, and the protrusions 305 and depressions 306 are alternately arranged to provide a larger deformation space, which is beneficial to releasing the impact force of the vibration of the acoustic body 40, and further improves the damping effect of the first damping member 30. In this embodiment, the protrusion 305 and the recess 306 are both arranged in the radial direction of the circular first spacer 301 and the circular second spacer 302.

The second damping member 31 is made of an elastic material and has good damping and buffering effects, and the second damping member 31 includes a cavity for accommodating the housing positioning column and a second fixing hole 311 corresponding to the first fixing hole 304; the contact surface 312 of the second damper 31 facing the first damper 30 is a flat surface, and contacts the end surface of the projection 305 of the second gasket 302, leaving a space for deformation of the second gasket 302.

The damper of this embodiment includes first damper 30 and second damper 31, and first damper 30 and second damper 31 are the components of a whole that can function independently structure, can effectively solve the vibration problem of stereo set body 40 on the horizontal direction, vibrate along the horizontal direction under stereo set mounting bracket 20's effect, first damper 30 can follow stereo set mounting bracket 20 and control or back-and-forth movement, the cavity diameter of second damper 31 is slightly greater than the diameter of reference column, make first damper 30 and second damper 31 and the reference column of casing or second damper 31 and reference column produce suitable skew, thereby fully release the vibration of horizontal direction, further play the cushioning effect.

During installation, the second shock absorber 31 is sleeved at the top end of the positioning column of the shell through the concave cavity, the first fixing hole 304, the second fixing hole 311 and the fastening hole on the positioning column are aligned, and then the fastening piece 32 (screw) penetrates through the first fixing hole 304, the second fixing hole 311 and the fastening hole in a threaded connection mode at one time, so that the sound installation frame 20 and the shell are installed and fixed.

The projector sound of the utility model is applied to a projector, the projector also comprises a shell and a projection unit, a sound cavity is arranged between the sound and the inner wall of the shell, and a low-pitch air pipe 10 is communicated with the sound cavity and a containing cavity 24 of a sound installation rack 20; meanwhile, the sound mounting bracket 20 is fixedly connected to the housing through a shock absorbing member. The projector with the sound structure is applied, the sound cavity arranged between the sound structure and the inside of the shell is communicated with the bass wind pipe 10, the sound structure is protected, and meanwhile, the bass effect of the projector is improved. It should be noted that other conventional components inside the projector, which are not shown, such as a heat sink, a control module, a power supply module, and the like, are also included in the projector of the present invention.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (10)

1. The utility model provides a bass tuber pipe, its characterized in that includes a tuber pipe export, two tuber pipe imports and connects the tuber pipe import with the tuber pipe export the tuber pipe way, the tuber pipe import includes first tuber pipe import and second tuber pipe import, first tuber pipe import to a loudspeaker the distance with the distance of second tuber pipe import to another loudspeaker equals.

2. The bass duct of claim 1, wherein the duct inlet is trumpet shaped.

3. The sub-woofer duct of claim 1 wherein the air ducts include a first air duct corresponding to a first duct inlet, a second air duct corresponding to a second duct inlet, and a third air duct corresponding to a duct outlet, the first air duct and the second air duct being symmetrically disposed and both communicating with the third air duct.

4. The sub-woofer duct of claim 3 further comprising a first side wall forming a first air duct and a second side wall forming a second air duct, a connection between the first side wall and the second side wall projecting towards the third air duct such that an included angle between the first air duct and the second air duct is less than 180 °.

5. A projector sound, comprising:

a sound body having two speakers;

the sound installation frame is used for fixing the sound body and is provided with a containing cavity for containing the sound body and a loudspeaker hole matched with a loudspeaker; the low-powered air pipe of any one of claims 1 to 4, wherein the low-powered air pipe is arranged at the upper part of the sound mounting rack and is communicated with the outer part of the sound mounting rack and the cavity; two tuber pipe imports of bass tuber pipe correspond one respectively loudspeaker, and reach and correspond loudspeaker's distance equals.

6. The projector sound of claim 5, wherein the duct outlet is located between two of the trumpet holes and oriented in a same direction as the trumpet holes.

7. The projector audio of claim 5 wherein the sub-woofer duct is a unitary structure with the audio mount.

8. The projector audio of claim 5, wherein the audio mounting bracket comprises an upper portion and a lower portion, the upper portion and the lower portion are detachably connected, the upper portion and the lower portion have a clamping structure at opposite edges, the clamping structure comprises a protruding strip and a groove, one of the protruding strip and the groove is located at the upper portion, the other is located at the lower portion, the protruding strip and the groove are oppositely arranged, and the protruding strip is embedded into the groove to enable the upper portion and the lower portion to be clamped and fixed.

9. The projector audio of claim 5, further comprising a shock absorbing assembly for connecting the audio mount and the housing; the damping component comprises a first damping piece and a second damping piece, the outer wall of the sound installation frame is provided with an installation seat, and the installation seat is fixedly connected with the shell through the first damping piece and the second damping piece.

10. The projector audio of claim 9, wherein the mounting base comprises a positioning hole, a gap is formed on one side of the positioning hole, the first damping member is made of an elastic material and comprises a first gasket, a second gasket, a connecting column for connecting the first gasket and the second gasket, and a first fixing hole penetrating through the first gasket, the second gasket and the connecting column, and the diameter of the connecting column is matched with the diameter of the positioning hole and is larger than the width of the gap; the diameters of the first gasket and the second gasket are larger than the diameter of the positioning hole;

the end faces of the first gasket and the second gasket are provided with a plurality of convex blocks and concave parts which are alternately arranged;

the second damping piece is made of an elastic material and comprises a concave cavity for accommodating the shell positioning column and a second fixing hole corresponding to the first fixing hole; the abutting surface of the second damping piece facing the first damping piece is a plane.

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