CN215601423U

CN215601423U - Sound structure with bass effect and projector thereof

Info

Publication number: CN215601423U
Application number: CN202122018818.4U
Authority: CN
Inventors: 金凌琳; 李志�; 邱昌盛
Original assignee: Dangqu Network Technology Hangzhou Co Ltd
Current assignee: Dangqu Network Technology Hangzhou Co Ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-01-21
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to a sound structure with a bass effect and a projector thereof, wherein the sound structure comprises a sound body and a sound mounting rack; the sound installation frame is used for fixing the sound body and is provided with a cavity for accommodating the sound body and a horn hole matched with the horn; the loudspeaker mounting frame is provided with a bass air pipe, and the bass air pipe is communicated with the outside of the loudspeaker mounting frame and the containing cavity. According to the technical scheme, the bass air pipe is additionally arranged on the sound structure, the bass effect of the sound structure is effectively improved through the matching of the bass air pipe and the loudspeaker, meanwhile, the structure of the sound mounting frame is reasonably utilized, and the volume of the sound structure cannot be additionally increased; 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 air pipe, the sound structure is protected, and meanwhile, the bass effect of the projector is improved.

Description

Sound structure with bass effect and projector thereof

Technical Field

The utility model relates to the technical field of sound structures, in particular to a sound structure with a bass effect and a projector thereof.

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 technical problem to be solved by the present invention is to overcome the defects in the prior art, and thus to provide an acoustic structure with a bass effect and a projector thereof.

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

an acoustic structure having a bass effect, comprising:

a sound body;

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 loudspeaker mounting frame is provided with a bass air pipe, and the bass air pipe is communicated with the outside of the loudspeaker mounting frame and the containing cavity.

Preferably, the sub-woofer duct has a duct outlet, a duct, and a duct inlet, the duct outlet being oriented in line with the horn aperture.

Preferably, the sound body comprises two horns, the number of the horn holes corresponds to two, and the air pipe outlet is located between the horn holes.

Preferably, the sub-woofer duct has a duct outlet and a duct inlet, and the duct communicates with the duct outlet and the duct inlet; the air duct is 7-shaped, and the inner wall of the corner of the air duct is smooth.

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

Preferably, the upper part of the sound installation frame is provided with a first groove, and the cross section of the first groove is semicircular; the wind 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 wind pipe cover is arranged on the first groove, the first groove and the second groove form a wind pipeline, and the wind pipe cover is fixedly connected with the upper portion.

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 sound structure further comprises a shock absorbing assembly for connecting the sound mounting frame 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.

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

a projector comprises a shell and a projection unit, and also comprises the sound structure; the sound structure with have the sound chamber between the inner wall of casing, the bass tuber pipe intercommunication the sound chamber with the appearance chamber of stereo set mounting bracket.

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

according to the technical scheme, the bass air pipe is additionally arranged on the sound structure, the bass effect of the sound structure is effectively improved through the matching of the bass air pipe and the loudspeaker, meanwhile, the structure of the sound mounting frame is reasonably utilized, and the volume of the sound structure cannot be additionally increased; 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 air pipe, the sound structure is protected, and meanwhile, the bass effect of the projector is improved.

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 schematic diagram of an acoustic structure provided in an embodiment of the present invention.

Fig. 2 is an exploded view of the acoustic structure of fig. 1.

Fig. 3 is a cross-sectional view of the acoustic structure shown in fig. 1.

Fig. 4 is a schematic structural view of an upper part provided in an embodiment of the present invention.

Fig. 5 is a top view of the upper portion shown in fig. 4.

Fig. 6 is a schematic structural view of a lower part provided in an embodiment of the present invention.

Fig. 7 is a schematic structural view of an upper part provided in another embodiment of the present invention.

Fig. 8 is a schematic view of the installation of the acoustic structure and the housing according to the embodiment of the present invention.

Fig. 9 is a schematic sectional view of a projector provided in an embodiment of the present invention.

Description of reference numerals:

10. a bass wind pipe; 11. an outlet of the air pipe; 12. an air duct; 121. a first groove; 122. an air duct cover; 123. a second groove; 13. an air duct inlet; 20. a sound installation rack; 21. an upper portion; 211. a convex strip; 22. a lower portion; 221. a groove is embedded; 23. a horn hole; 24. a cavity; 25. an outlet; 26. a mounting seat; 261. positioning holes; 262. a notch; 263. a protection plate; 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 concave cavity; 312. a second fixing hole; 313. an abutting surface; 40. a sound body; 41. a horn; 50. a housing; 51. a sound cavity; 52. a positioning column; 521. a fastening hole.

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 to 7, an embodiment of the present invention provides a sound structure with a bass effect, which includes a sound body 40 and a sound mounting rack 20; the main body 40, namely, the sound emitting device, includes a speaker 41, a sound circuit, etc., and the sound mounting bracket 20 is used for fixing the main body 40, so that the main body 40 is kept stable and has a good sound emitting effect. As shown in fig. 3, the acoustic mount 20 has a cavity 24 for accommodating the acoustic body 40 and a speaker hole 23 adapted to the speaker 41; 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 12, and a duct inlet 13. As shown in fig. 3, the inlet 13 of the air duct is exposed in the cavity 24 and is communicated with the cavity 24; as shown in fig. 2, the duct outlet 11 communicates with the outside, and the duct 12 communicates with the duct inlet 13 and the 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. 2, 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 bass effect.

The shape of the bass wind pipe 10 is various, in this embodiment, as can be seen from fig. 1, fig. 3, fig. 4 and fig. 5, the bass wind pipe 10 has a wind pipe outlet 11 and a wind pipe inlet 13, the wind pipe 12 communicates the wind pipe outlet 11 and the wind pipe inlet 13, the wind pipe 12 is 7-shaped, and the inner wall of the corner of the wind pipe 12 is smooth. The cross section of the air pipeline 12 is circular, so that smooth air flow is ensured, and the obstruction of the air flow to the inner wall is reduced. The 7-shaped air duct 12 ensures that the length of the air flow channel is enough, and is generally 1/5-1/3, preferably 1/4, of the corresponding wavelength of the resonance frequency of the horn.

In some embodiments, as shown in fig. 7, the sub-woofer duct 10 is integrated with the audio mount 20, 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.

As shown in fig. 2, in the present embodiment, the sub-woofer 10 includes a duct slot and a duct cover 122, and the sub-woofer 10 is formed by: the upper part 21 of the sound installation rack 20 is provided with a first groove 121, the first groove 121 is an air duct groove, and the cross section of the first groove 121 is semicircular; the air duct cover 122 is further included, the shape of the air duct cover 122 is matched with that of the first groove 121, the air duct cover 122 is provided with a second groove 123, the cross section of the second groove 123 is semicircular, when the air duct cover 122 is covered on the first groove 121, the first groove 121 and the second groove 123 form an air duct 12, and the air duct cover 122 is fixedly connected with the upper portion 21. Preferably, the air duct cover 122 is ultrasonically pressed on the first groove 121, so as to ensure the air tightness of the air duct 12. This kind of structure is convenient carries out the finish machining to the inner wall of wind pipeline 12, 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.

In addition to ensuring the air tightness of the air duct 12, the sound structure of the present embodiment also requires that the cavity 24 of the sound mounting bracket 20 has a certain sealing property, which is not high in requirement and can be realized by a clamping structure. Specifically, the opposite edges of the upper portion 21 and the lower portion 22 are provided with a clamping structure, the clamping structure comprises a convex strip 211 and an embedded groove 221, one of the convex strip 211 and the embedded groove 221 is located on the upper portion 21, the other one of the convex strip 211 and the embedded groove 221 is located on the lower portion 22, the convex strip 211 and the embedded groove 221 are arranged oppositely, and the convex strip 211 is embedded in the embedded groove 221 to enable the upper portion 21 and the lower portion 22 to be clamped and fixed. In the present embodiment, as shown in fig. 4 and 6, the convex strip 211 is located at the edge of the upper portion 21, and the fitting groove 221 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 211 embedding embedded groove 221, tentatively fixed upper portion 21 and lower part 22, at last with loudspeaker mounting bracket and upper portion 21 fixed connection.

As shown in fig. 9, the sound mount 20 further includes an outlet 25, where the outlet 25 is located on a side of the sound mount 20 away from the speaker, and is used for leading the wiring harness of the sound body 40 out of the sound mount 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 and goes out the line half hole, and the first half hole of being qualified for the next round of competitions and the second is qualified for the next round of competitions and is formed outlet 25 after upper portion 21 folds fixedly with lower part 22 in the first half hole of being qualified for the next round of competitions, can set up the pencil fastener on the pencil, and the first half hole of being qualified for the next round of competitions and the second is qualified for the next round of competitions half hole with the pencil fastener centre gripping in the middle of, guarantees the stable connection of pencil.

The speaker is a main vibration unit of the sound structure, and transmits vibration to the housing 50 through the sound mounting bracket 20, and therefore, as shown in fig. 1 and 2, the sound mounting structure of the present embodiment further includes a damping member for connecting the sound mounting bracket 20 and the housing 50; specifically, the shock absorbing assembly comprises a first shock absorbing member 30 and a second shock absorbing member 31, the outer wall of the sound mounting bracket 20 is provided with a mounting seat 26, and the mounting seat 26 is fixedly connected with the shell 50 through the first shock absorbing member 30 and the second shock absorbing member 31.

The first shock absorbing member 30 is substantially in an i-shape, 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 261 of the mounting seat 26, specifically, as shown in fig. 1, the mounting seat 26 includes a positioning hole 261, one side of the positioning hole 261 is provided with a notch 262, the first shock absorbing member 30 is made of an elastic material, the diameter of the connecting column 303 is adapted to the diameter of the positioning hole 261 and is larger than the width of the notch 262, when the mounting seat is mounted, the connecting column 303 is squeezed into the positioning hole 261 of the mounting seat 26 from the notch 262, and the connecting column 303 can be properly deformed and then restored. The diameters of the first spacer 301 and the second spacer 302 are larger than the diameter of the positioning hole 261, and the first spacer 301 and the second spacer 302 respectively abut against the upper surface and the lower surface of the mounting seat 26. 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 shock absorbing member 31 is made of an elastic material and has good shock absorbing and buffering effects, as shown in fig. 8, the second shock absorbing member 31 includes a cavity 311 for accommodating the positioning pillar 52 of the housing 50 and a second fixing hole 312 corresponding to the first fixing hole 304; the contact surface 313 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 damping assembly of the embodiment comprises a first damping member 30 and a second damping member 31, wherein the first damping member 30 and the second damping member 31 are of a split structure, the problem of vibration of the sound body 40 in the horizontal direction can be effectively solved, when the sound installation frame 20 vibrates in the horizontal direction under the action of the sound body 40, the first damping member 30 can move left and right or back and forth along with the sound installation frame 20, the diameter of a cavity 311 of the second damping member 31 is slightly larger than that of a positioning column 52, so that the first damping member 30, the second damping member 31, the positioning column 52 of the shell 50 or the second damping member 31 and the positioning column 52 generate proper deviation, vibration in the horizontal direction is fully released, and a buffering effect is further achieved.

When the sound mounting bracket 20 is mounted, as shown in fig. 8, the second shock absorbing member 31 is sleeved on the top end of the positioning column 52 of the casing 50 through the cavity 311, the first fixing hole 304 and the second fixing hole 312 are aligned with the fastening hole 521 on the positioning column 52, and then the fastening member (screw) is threaded through the first fixing hole 304, the second fixing hole 312 and the fastening hole 521 at one time, so that the sound mounting bracket 20 is mounted and fixed on the casing 50.

Preferably, as shown in fig. 1 and 6, the side surface of the mount 26 has a downwardly extending shielding plate 263, and the shielding plate 263 has an arc-shaped structure for protecting the shock-absorbing assembly and reinforcing the structural strength of the mount 26.

As shown in fig. 8 and fig. 9, the present invention further provides a projector, which includes a casing 50 and a projection unit, and further includes the sound structure in the above embodiment, a sound cavity 51 is provided between the sound structure and the inner wall of the casing 50, and the bass duct 10 communicates the sound cavity 51 with the cavity 24 of the sound mounting bracket 20; meanwhile, the sound mounting bracket 20 is fixedly connected to the case 50 through a shock absorbing member. The projector with the sound structure is applied, the sound cavity 51 arranged between the sound structure and the inside of the shell 50 is communicated with the bass air pipe, 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, not shown, are also included in the projector of the present invention, for example, a heat sink. A control module, a power module and the like.

As shown in fig. 8, the inner wall of the housing 50 has a positioning post 52 corresponding to the mounting seat 26, the positioning post 52 has an upward protruding positioning post 52, the positioning post 52 has a hollow structure and has a fastening hole 521, the fastening hole 521 is a threaded hole, when mounting, the first damper 30 is inserted into the positioning hole 261 of the mounting seat 26, the second damper 31 is fitted over the top end of the positioning post 52, the first damper 30 and the second damper 31 are abutted, the first fixing hole 304 and the second fixing hole 312 are aligned with the fastening hole 521 of the positioning post 52, then the fastening member (screw) is threaded through the first fixing hole 304 and the second fixing hole 312 at one time to be connected with the fastening hole 521, therefore, the sound mounting frame 20 and the shell 50 are fixedly mounted, and the phenomenon that the projection lens is unstable in focusing and unclear in projection content due to the fact that the vibration of the sound body 40 is transmitted to the projection lens is effectively avoided.

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

1. A sound structure with bass effect, comprising:

a sound body;

2. The acoustic structure with a bass effect of claim 1, wherein the bass vent has a vent outlet, a vent duct, and a vent inlet, the vent outlet oriented in the same direction as the trumpet aperture.

3. A sound structure with a bass effect according to claim 2, wherein the sound body comprises two horns, the number of horn holes corresponds to two, and the duct outlet is located between the horn holes.

4. The acoustic structure having a bass effect of claim 2, wherein the bass duct has a duct outlet and a duct inlet, the duct communicating the duct outlet with the duct inlet; the air duct is 7-shaped, and the inner wall of the corner of the air duct is smooth.

5. The audio structure with a bass effect of claim 1, wherein the bass duct is of a unitary construction with the audio mount.

6. The acoustic structure with a bass effect of claim 1, wherein the upper portion of the acoustic mount has a first groove having a semicircular cross section; the wind 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 wind pipe cover is arranged on the first groove, the first groove and the second groove form a wind pipeline, and the wind pipe cover is fixedly connected with the upper portion.

7. The sound structure with bass effect of claim 1, wherein the sound mount 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 thereof, 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 one of the protruding strip and the groove is located at the lower portion, and the protruding strip and the groove are oppositely arranged, and the protruding strip is embedded in the groove to clamp and fix the upper portion and the lower portion.

8. The acoustic structure with a bass effect of claim 1, further comprising a shock absorbing member for connecting the acoustic mount and the cabinet; 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.

9. The acoustic structure with bass effect of claim 8, wherein the mounting seat comprises a positioning hole, one side of the positioning hole is provided with a notch, the first damping member is made of elastic material and comprises a first gasket, a second gasket, a connecting column 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 notch; the diameters of the first gasket and the second gasket are larger than the diameter of the positioning hole;

10. A projector comprising a housing and a projection unit, characterized by further comprising an acoustic structure according to any one of claims 1 to 9; the sound structure with have the sound chamber between the inner wall of casing, the bass tuber pipe intercommunication the sound chamber with the appearance chamber of stereo set mounting bracket.