CN208956330U - A kind of loudspeaker - Google Patents

Abstract

The utility model relates to a loudspeaker, which comprises a front shell, a rear shell and a rear end cover. An electro-acoustic conversion component is installed in the rear shell, and the rear end cover is buckled and mounted on the rear of the front shell to form a closed rear cavity. The inner end wall of the rear end cover is provided with a closed sound collecting cavity, the two ends of the sound collecting cavity are respectively provided with openings, and one of the openings is the cavity sound inlet port and the other opening is the cavity sound outlet port. A sound outlet pipe is connected, a consonant hole is arranged on the front shell, and the other end of the sound outlet pipe is communicated with the consonant hole. The utility model has the advantages of simple structure and convenient implementation, which can improve the utilization rate of sound waves and the effect of sound quality.

Description

A kind of loudspeaker

Technical field

The utility model relates to a kind of loudspeakers.

Background technique

Loudspeaker is a kind of electroacoustic conversion products, for DYN dynamic loudspeaker, its working principle is that: the coil of loudspeaker AC audio electric current is connected in (voice coil), the magnetic field of alternation is generated around coil, carries permanent magnetism since coil is located at loudspeaker In the magnetic field of body, therefore, two magnetic fields generate interaction force, so that coil is vibrated with tone currents amplitude, in loudspeaker, Coil is structure as a whole with vibrating diaphragm, and vibrating diaphragm follows coil vibration sounding, to complete conversion of the electric signal to mechanical oscillation.

The structure of existing loudspeaker is by taking earphone as an example, as shown in Figure 1 comprising procapsid 1, back casing 2 and rear end cap 3, The rear portion of the procapsid 1 of 2 spiral-lock of back casing, 3 spiral-lock of rear end cap procapsid 1 rear portion and back casing 2 is covered in it.Front housing The center of body 1 opens up multiple preceding sound holes 4, the front installation sponge ear muff or built-in earplug of procapsid 4；In back casing 2 Installation electroacoustic transition components, including permanent magnet 6, yoke frame, coil 7, vibrating diaphragm 5 and ring etc., the center of permanent magnet 6, The center and border position of back casing 2 and the center of rear end cap 3, which open up, lets out sound hole 8.Vibrating diaphragm 5 vibrates Shi Qi Front and back generates the sound wave of opposite in phase respectively, and the positive sound wave in front lets out sound hole from preceding sound hole 4 across and into human ear 8, for releasing reverse phase sound wave, avoid generating interference to positive sound wave.

Traditional view thinks that reverse phase sound wave and positive sound wave mix and can cancel out each other, to will affect sound quality, causes Interference, therefore, it is necessary to be arranged to let out sound hole in structure.Obviously, this kind of processing mode obviously will cause the waste of energy, and can be Loudspeaker rear portion generates bring noise due to reverse phase soundwave leakage.

Patent No. " 201820983778.2 ", entitled " loudspeaking filed in applicant in this case on June 26th, 2018 In the utility model patent of device ", by increasing vibration component in back cavity, after the processing of reverse phase acoustical impedance, via on procapsid Preceding secondary sound hole be passed to human ear, to form acoustic reverberation effect one in front and one in back with former positive sound wave, and then generate more high-quality Audio and auditory effect.

Aforementioned schemes are only the simple utilization to the reverse phase sound wave of incoming back cavity, meanwhile, being not only for incoming back cavity is anti- There are also the interference sound waves of high frequency for phase sound wave, therefore, let out sound hole and are applied not only to release reverse phase sound wave and be also used to release high frequency sound wave, show It so will cause the waste of energy.

The rear cavity configuration of loudspeaker is further improved with aforementioned schemes, applicant in this case based on the above issues, is researched and developed A kind of loudspeaker of new construction, the loudspeaker optimize recycling to the sound wave of incoming back cavity out, can more be had texture and More powerful acoustical quality.

Utility model content

It is simple, easy to implement that the technical problem to be solved by the present invention is to provide a kind of structures, sound wave utilization rate height, sound The good loudspeaker of matter effect.

In order to solve the above technical problems, the loudspeaker of the utility model includes procapsid, back casing and rear end cap, back casing Interior installation electroacoustic transition components, rear end cap spiral-lock procapsid rear portion and form closed back cavity, be structurally characterized in that described Closed collection sound chamber is set in the inner end wall of rear end cap, integrate sound chamber both ends be respectively set opening and wherein one opening as cavity into Sound mouth, another opening are cavity sound mouth, connect sound tube on cavity sound mouth, consonant hole is opened up on procapsid, sound tube The other end is connected to consonant hole.

The cavity is respectively less than the internal diameter for collecting sound chamber into the internal diameter of sound mouth and the internal diameter of cavity sound mouth.

The cavity is into connecting into sound tube on sound mouth.

The shape for integrating sound chamber is arc or semi-circular.

The sound tube includes transverse tube and vertical tube, and transverse tube front end is connected to cavity sound mouth and transverse tube is close to the interior of rear end cap End wall, vertical tube pass through back cavity and are connected to the rear end of transverse tube with consonant hole.

The end of the vertical tube is pigtail, and the caliber of pigtail originates position to its closing position from it and gradually increases Greatly, the outlet of pigtail is connected on consonant hole.

The sound tube includes transverse tube and vertical tube, and transverse tube front end is connected to cavity sound mouth and transverse tube is close to the interior of rear end cap End wall, vertical tube are close to the inner sidewall of rear end cap and are connected to the rear end of transverse tube with consonant hole.

Multiple preceding secondary sound holes being connected to back cavity are offered on the procapsid.

Conveyor front barrel is connected on the front panel of the procapsid, the front end of conveyor front barrel is connected with annular baffle.

The working principle of the utility model and advantageous effect are made a concrete analysis of below.

It propagated in cavern far away of sound and echo and prolongs silk floss, this kind of speciality based on sonic transmissions, after loudspeaker Chamber setting collection sound chamber, collection sound chamber are equivalent to cavern, and sound wave enters collection sound chamber into sound mouth by cavity, and multiple reflections echo in cavity Afterwards, then successively via human ear is entered behind cavity sound mouth, sound tube and consonant hole, the frequency of the high frequency sound wave of back cavity is reduced, together When, sound wave also obtains the acoustical quality of more impact and cavity.The cavity geometry for collecting sound chamber uses arc or semi-circular, more It helps sound wave and generates reverberation effect.The inlet and outlet of collection sound chamber is respectively less than cavity internal diameter, is more conducive to sound wave and generates cavity effect Fruit.Pigtail is set, horn mouth formula structure is formed, there is amplification effect, the sound wave through collection sound chamber processing can be amplified It is blended into ante-chamber later, to further enhance audio.Conveyor front barrel and annular baffle can concentrate the sound wave transmitted from back cavity, The sound transmitted from back cavity is pooled to the center of procapsid, facilitates the sound wave mixing of front/back cavity, generates more good Audio and auditory effect.

In conclusion the utility model structure it is simple, it is easy to implement, sound wave utilization rate can be improved and can be promoted sound quality effect Fruit.

Detailed description of the invention

The utility model is described in further detail with reference to the accompanying drawings and detailed description:

Fig. 1 is existing Headphone structure schematic diagram；

Fig. 2 is the structural schematic diagram of the first embodiment of the utility model；

Fig. 3 is the schematic cross-sectional view in the direction A-A along Fig. 2；

Fig. 4 is the structural schematic diagram of second of embodiment of the utility model；

Fig. 5 is the schematic cross-sectional view in the direction B-B along Fig. 4；

Fig. 6 is the structural schematic diagram of the third embodiment of the utility model；

Fig. 7 is the schematic cross-sectional view in the direction C-C along Fig. 6.

Specific embodiment

Referring to Fig.1, existing earphone includes procapsid 1, back casing 2 and rear end cap 3, the procapsid 1 of 2 spiral-lock of back casing Rear portion, 3 spiral-lock of rear end cap procapsid 1 rear portion and back casing 2 is covered in it.The center of procapsid 1 opens up multiple The front of preceding sound hole 4, procapsid 4 is installed by sponge ear muff 5；Electroacoustic transition components, including permanent magnet 6, yoke are installed in back casing 2 Frame, coil 7, vibrating diaphragm 5 and ring etc., the center of permanent magnet 6, the center of back casing 2 and rear end cap 3 centre bit It sets to open up and lets out sound hole 8.Vibrating diaphragm 18 vibrates the sound wave that Shi Qi front and back generates opposite in phase respectively, the positive cross-talk in front Wave is let out sound hole 8 then for releasing reverse phase sound wave and high frequency sound wave, is avoided to preceding phase from preceding sound hole 4 across and into human ear Sound wave generates interference.Traditional view thinks that reverse phase sound wave and positive sound wave mix and can cancel out each other, to will affect sound Matter interferes, and therefore, it is necessary to be arranged to let out sound hole 8 in structure.

Referring to Fig. 2, the loudspeaker of the utility model includes procapsid 1, back casing 2 and rear end cap 3, installation in back casing 2 Electroacoustic transition components, 3 spiral-lock of rear end cap procapsid 1 rear portion and form closed back cavity 9, it is characterized in that the rear end cap 3 Inner end wall on closed collection sound chamber 10 is set, opening is respectively set for the both ends for integrating sound chamber 10 and wherein an opening is cavity into sound Mouthful, another opening be cavity sound mouth, cavity connects sound tube 11 on cavity sound mouth into connecting on sound mouth into sound tube 13, preceding Consonant hole 12 is opened up on shell 1, the other end of sound tube 11 is connected to consonant hole 12.

It propagated in cavern far away of sound and echo and prolongs silk floss, this kind of speciality based on sonic transmissions, after loudspeaker Chamber setting collection sound chamber 10, collection sound chamber 10 are equivalent to cavern, and sound wave enters collection sound chamber 10, multiple reflections in cavity into sound mouth by cavity After echoing, then successively via behind cavity sound mouth, sound tube 11 and consonant hole 12 enter human ear, the frequency of the high frequency sound wave of back cavity It reduces, meanwhile, sound wave also obtains the acoustical quality of more impact and cavity.

Referring to attached drawing, cavity is respectively less than the internal diameter for collecting sound chamber 10 into the internal diameter of sound mouth and the internal diameter of cavity sound mouth.Collect sound The shape of chamber 10 is arc or semi-circular.The cavity geometry for collecting sound chamber 10 uses arc or semi-circular, more helps sound wave and generates back Ring effect.The inlet and outlet of collection sound chamber 10 is respectively less than cavity internal diameter, is more conducive to sound wave and generates empty effect.

Referring to Fig. 2 and Fig. 3, sound tube 11 includes transverse tube 1101 and vertical tube 1102,1101 front end of transverse tube and cavity sound mouth Connection and transverse tube 1101 are close to the inner end wall of rear end cap 3, and vertical tube 1102 passes through back cavity 9 and by the rear end of transverse tube 1101 and consonant hole 12 connections.

Referring to Fig. 6, the end of vertical tube 1102 is pigtail, and the caliber of pigtail, which originates position from it, terminates portion to it Position is gradually increased, and the outlet of pigtail is connected on consonant hole 12.Pigtail is set, forms horn mouth formula structure, has Amplification effect is blended into ante-chamber after can amplifying to the sound wave through collection sound chamber processing, to further enhance audio.

Referring to Fig. 4 and Fig. 5, sound tube 11 includes transverse tube 1101 and vertical tube 1102,1101 front end of transverse tube and cavity sound mouth Connection and transverse tube 1101 are close to the inner end wall of rear end cap 3, and vertical tube 1102 is close to the inner sidewall of rear end cap 3 and will be after transverse tube 1101 End is connected to consonant hole 12.

Referring to attached drawing, multiple preceding secondary sound holes 14 being connected to back cavity 9 are offered on procapsid 1.On the front panel of procapsid 1 It is connected with conveyor front barrel, the front end of conveyor front barrel is connected with annular baffle 15.Wherein, preceding secondary sound hole 14 can be by the acoustic wave segment of back cavity 9 Directly pass back to ante-chamber, the sound wave of the sound wave and former ante-chamber passed back with consonant hole 12 mixes, and generates reverberation effect.Conveyor front barrel and Annular baffle 15 can concentrate the sound wave transmitted from back cavity, and the sound transmitted from back cavity is pooled to the center of procapsid, Facilitate the mixing of front/back cavity sound wave, generates more good audio and auditory effect.

In conclusion the utility model is not limited to above-mentioned specific embodiment.Those skilled in the art are not departing from this reality Under the premise of with novel spirit and scope, several change or modification can be done.It is practical new that above-mentioned change or modification each fall within this The protection scope of type.

Claims (9)

1. a kind of loudspeaker, including procapsid (1), back casing (2) and rear end cap (3), back casing (2) is interior to install electroacoustic conversion group Part, rear end cap (3) spiral-lock procapsid (1) rear portion and formed closed back cavity (9), it is characterized in that the rear end cap (3) Closed collection sound chamber (10) is set in inner end wall, integrate sound chamber (10) both ends be respectively set opening and wherein one opening as cavity into Sound mouth, another opening are cavity sound mouth, connect sound tube (11) on cavity sound mouth, procapsid opens up consonant hole on (1) (12), the other end of sound tube (11) is connected to consonant hole (12).

2. loudspeaker as described in claim 1, it is characterized in that the cavity is into the internal diameter of sound mouth and the internal diameter of cavity sound mouth Respectively less than collect the internal diameter of sound chamber (10).

3. loudspeaker as described in claim 1, it is characterized in that the cavity is into connecting into sound tube (13) on sound mouth.

4. loudspeaker as described in claim 1, it is characterized in that the shape for integrating sound chamber (10) is arc or semi-circular.

5. loudspeaker as described in claim 1, it is characterized in that the sound tube (11) includes transverse tube (1101) and vertical tube (1102), transverse tube (1101) front end is connected to cavity sound mouth and transverse tube (1101) is close to the inner end wall of rear end cap (3), vertical tube (1102) back cavity (9) are passed through and are connected to the rear end of transverse tube (1101) with consonant hole (12).

6. loudspeaker as claimed in claim 5, it is characterized in that the end of the vertical tube (1102) is pigtail, pigtail Caliber from its originate position to its closing position be gradually increased, the outlet of pigtail is connected on consonant hole (12).

7. loudspeaker as described in claim 1, it is characterized in that the sound tube (11) includes transverse tube (1101) and vertical tube (1102), transverse tube (1101) front end is connected to cavity sound mouth and transverse tube (1101) is close to the inner end wall of rear end cap (3), vertical tube (1102) it is close to the inner sidewall of rear end cap (3) and is connected to the rear end of transverse tube (1101) with consonant hole (12).

8. such as loudspeaker of any of claims 1-7, it is characterized in that being offered on the procapsid (1) multiple with after The preceding secondary sound hole (14) of chamber (9) connection.

9. loudspeaker as claimed in claim 8, it is characterized in that it is connected with conveyor front barrel on the front panel of the procapsid (1), it is preceding The front end of cylinder is connected with annular baffle (15).