CN207075087U

CN207075087U - Loudspeaker enclosure

Info

Publication number: CN207075087U
Application number: CN201720804399.8U
Authority: CN
Inventors: 秦鹏; 施胜荣; 张哲�
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2017-07-04
Filing date: 2017-07-04
Publication date: 2018-03-06
Anticipated expiration: 2027-07-04

Abstract

The utility model discloses a kind of loudspeaker enclosure, including housing and the loudspeaker monomer being contained in the housing, the loudspeaker monomer includes the vibrating diaphragm for vibration sounding, the vibrating diaphragm is arranged at intervals to form the preceding operatic tunes with the housing, the loudspeaker enclosure also includes the connection preceding operatic tunes and leads sound passage with extraneous, the preceding operatic tunes and the ante-chamber led sound passage and collectively form the loudspeaker enclosure, the position that the ante-chamber is corresponded on the housing is provided with the through hole for running through housing, the loudspeaker enclosure also includes the elastic cover plate for being used to absorb the energy of the vibration under particular resonant frequency that the through hole is connected and covered with the housing, the elastic cover plate includes sheet metal and is arranged on the elastomeric material for connecting the sheet metal and the housing of the sheet metal periphery.Loudspeaker enclosure provided by the utility model, ante-chamber resonance can be weakened, resonance peak is reduced, improve distortion.

Description

Loudspeaker enclosure

【Technical field】

It the utility model is related to electroacoustic switch technology field, and in particular to a kind of loudspeaker enclosure.

【Background technology】

With the arrival in mobile Internet epoch, the quantity of Intelligent mobile equipment constantly rises.And in numerous mobile devices Among, mobile phone is undoubtedly most common, most portable mobile terminal device.At present, the function of mobile phone is extremely various, and one of them is just It is the music function of high-quality, therefore, the loudspeaker enclosure for playing sound is widely applied Intelligent mobile equipment till now Among.

Loudspeaker enclosure includes housing, the loudspeaker monomer being contained in the housing, and the loudspeaker monomer includes being used for The vibrating diaphragm of vibration sounding, the vibrating diaphragm are arranged at intervals to form the preceding operatic tunes with the housing, and the preceding operatic tunes connects with leading sound passage Form ante-chamber.In correlation technique, housing is made of hard plastic material and metal material, and region corresponding to the preceding operatic tunes is firm Property wall.The damping of rigid walls is small, and Oscillation Amplitude is small, and emittance is limited, and cavity energy effectively can not blaze abroad, because And the energy of some assigned frequencies can not be absorbed.Ante-chamber resonance is produced during the loudspeaker enclosure sounding, due to resonance effect, in High frequency forms resonance peak, while 2 times, 3 inferior distortion spikes can be produced in distortion, influences sense of hearing.

Therefore, it is necessary to providing a kind of new loudspeaker enclosure solves above-mentioned technical problem.

【Utility model content】

The purpose of this utility model is to overcome above-mentioned technical problem, there is provided one kind weakens ante-chamber resonance, reduces resonance peak, changes The loudspeaker enclosure of kind distortion.

The technical solution of the utility model is as follows：

A kind of loudspeaker enclosure, including housing and the loudspeaker monomer being contained in the housing, the loudspeaker monomer bag The vibrating diaphragm for vibration sounding is included, the vibrating diaphragm is arranged at intervals to form the preceding operatic tunes with the housing, and the loudspeaker enclosure also includes Connect the preceding operatic tunes and lead sound passage with extraneous, the preceding operatic tunes collectively forms the loudspeaker enclosure with the sound passage of leading Ante-chamber, the position that the ante-chamber is corresponded on the housing are provided with through hole through housing, the loudspeaker enclosure also include with it is described Housing connects and covers the elastic cover plate for being used to absorb the energy of the vibration under particular resonant frequency of the through hole, the elasticity Cover plate includes sheet metal and is arranged on the elastomeric material for connecting the sheet metal and the housing of the sheet metal periphery.

Preferably, the through hole is set with the loudspeaker monomer face.

Preferably, the elastomeric material is set around the sheet metal, the inner side of the elastomeric material formed with depressed part, The periphery of the sheet metal is embedded in the depressed part and is connected with the elastomeric material.

Preferably, the housing is additionally provided with groove in the through hole, and the elastomeric material is arranged in the groove.

Preferably, the groove includes first plane adjacent with the through hole and from first plane to the shell Second plane of external side extension, the elastomeric material are bonded with first plane and second plane.

Preferably, the sheet metal is at least partially disposed at the top of first plane.

Preferably, the elastomeric material is formed with the housing by double-shot moulding or hot pressing or stickup or ultrasonic bonding It is fixedly connected.

Preferably, the elastomeric material is one kind in TPUE, methyl cyclopentenyl ketone or silica gel.

Preferably, the elastic cover plate absorbs the energy for the vibration that resonant frequency is 3000~7000Hz.

Compared with correlation technique, loudspeaker enclosure beneficial effect provided by the utility model is：The housing includes corresponding The through hole that the preceding cavity region is formed, the loudspeaker enclosure also include being connected with the housing and covering the elastomeric cap of the through hole Plate, for absorbing the energy of the vibration under particular resonant frequency, so as to weaken the resonance effect of the loudspeaker enclosure and reduction Its distortion, and then improve the acoustical behavior of the loudspeaker enclosure.

【Brief description of the drawings】

Fig. 1 is the stereogram of loudspeaker enclosure provided by the utility model；

Fig. 2 is sectional view of the loudspeaker enclosure along line A-A shown in Fig. 1；

Fig. 3 is the explosive view of loudspeaker enclosure shown in Fig. 1；

Fig. 4 is the cross section view of loudspeaker enclosure elastomeric material shown in Fig. 2；

Fig. 5 is the amplitude measurement result figure of elastic cover plate in loudspeaker enclosure provided by the utility model；

Fig. 6 is the humorous of loudspeaker enclosure provided by the utility model loudspeaker enclosure corresponding with using rigid walls in correlation technique Shake peak contrast curve；

Fig. 7 is loudspeaker enclosure provided by the utility model loudspeaker enclosure distortion corresponding with using rigid walls in correlation technique Spike contrast curve.

【Embodiment】

Below in conjunction with drawings and embodiments, the utility model is described in further detail.

Fig. 1, Fig. 2, Fig. 3, Fig. 4 are please referred to, wherein Fig. 1 is the stereogram of loudspeaker enclosure provided by the utility model； Fig. 2 is sectional view of the loudspeaker enclosure along line A-A shown in Fig. 1；Fig. 3 is the explosive view of loudspeaker enclosure shown in Fig. 1；Fig. 4 is Fig. 2 institutes Show the cross section view of loudspeaker enclosure elastomeric material.The loudspeaker enclosure 100 includes housing 11, is contained in the housing 11 Loudspeaker monomer 12.The loudspeaker monomer 12 includes the vibrating diaphragm 121 for vibration sounding.

The housing 11 includes upper lid 111 and lower cover 112, and the upper lid 111 and the lower cover 112 enclose to form a collecting Space, the loudspeaker monomer 12 are contained in the receiving space.

The inwall of the vibrating diaphragm 121 and the upper lid 111 is arranged at intervals to form the preceding operatic tunes 113, and the upper lid 111 also includes Connect the preceding operatic tunes 113 and lead sound passage 114 with extraneous, the preceding operatic tunes 113 collectively forms institute with the sound passage 114 of leading The ante-chamber 110 of loudspeaker enclosure 100 is stated, the ante-chamber 110 is by outside sound conduction caused by the vibrating diaphragm 121 to the housing 11.

The position that the ante-chamber 110 is corresponded on the upper lid 111 is provided with the through hole 1111 for running through upper lid 111, the upper lid 111 are additionally provided with groove 1112 at the through hole 1111, and the loudspeaker enclosure 100 also includes being connected and covering with the upper lid 111 The elastic cover plate 13 of the through hole 1111 is covered, the elastic cover plate 13 is fixedly connected the through hole 1111 with the upper lid 111 Sealing, the elastic cover plate 13 include sheet metal 131 and are arranged on the connection sheet metal 131 of the periphery of sheet metal 131 With the elastomeric material 132 of the upper lid 111, the elastomeric material 132 is arranged in the groove 1112.Preferably, it is described logical Hole 1111 and the face of loudspeaker monomer 12 are set, and certainly, the through hole 1111, which can also be arranged at, described leads sound passage 114 Position.

The elastomeric material 132 is set around the sheet metal 131, it is preferred that the inner side 1321 of the elastomeric material 132 Formed with depressed part 1322, the periphery of the sheet metal 131 is embedded in the depressed part 1322 to be connected with the elastomeric material 132 Connect.

The groove 1112 includes first plane 11121 adjacent with the through hole 1111 and from first plane 11121 the second planes 11122 extended to the upper outside of lid 111, the elastomeric material 132 and first plane 11121 It is bonded with second plane 11122.

Preferably, the sheet metal 131 is at least partially disposed at the top of first plane 11121 so that the metal The periphery of piece 131 towards first plane 11121 be projected in first plane 11121 in the range of, sheet metal 131 There is periphery part to support.

Rigid walls in correlation technique are replaced by the elastic cover plate 13 in the utility model, and the elastic cover plate 13 elastomeric material 132 can drive sheet metal 131 to move, and the elastic cover plate 13 has a resonant frequency, passes through Design, when the resonant frequency of the elastic cover plate 13 is adjusted into a certain frequency, near resonant frequency, the elastic cover plate 13 Stronger vibration can be produced, in 100 sounding of loudspeaker enclosure, when loudspeaker monomer 12 vibrates, makes the air in ante-chamber 110 Compression produces energy, and energy driving elastic cover plate 13 vibrates, and so as to consume the energy in ante-chamber 110, elastic cover plate 13 is preferable Vibrate at the resonant frequency fx, now oscillation intensity reaches maximum, so as to consume more energy；And then absorb and specify The purpose of energy near frequency；Can be by medium density in the ante-chamber 110 in addition, substituting rigid walls by the elastic cover plate 13 Change is passed to outside the ante-chamber 110, and then is reduced the covibration of the loudspeaker enclosure 100 and improved distortion.

Especially by the entirety to the elastic cover plate 13 or part material, area, shape and thickness be designed with Realize above-mentioned purpose.The elastomeric material 132 is preferably Thermoplastic polyurethane elastomer material (TPU), methyl cyclopentenyl ketone (MCP) one kind or in silica gel.Formed again by double-shot moulding or hot pressing or stickup or ultrasonic bonding with the upper lid 111 solid Fixed connection, elastic cover plate 13 form the part-structure of ante-chamber 110, absorb the resonance peak of the ante-chamber 110 of the loudspeaker enclosure 100 Neighbouring energy, reach reduce resonance peak, improve distortion, improve the loudspeaker enclosure 100 acoustical behavior purpose.Elastomeric cap The resonant frequency range that plate 13 can absorb as needed is designed adjustment.What specific resonant frequency was as set needs to absorb Resonant frequency range.

Loudspeaker enclosure 100 provided by the utility model is subjected to elastic cover plate amplitude measurement.Referring to Fig. 5, Fig. 5 is this reality With the amplitude measurement result figure of elastic cover plate in the loudspeaker enclosure of new offer, wherein curve a represents that elastic cover plate amplitude is maximum Value, curve b represent elastic cover plate amplitude minimums.Elastic cover plate resonant frequency is in the present embodiment it can be seen from accompanying drawing 4 3000-7000Hz, stronger vibration can be produced near elastic cover plate resonant frequency.

By loudspeaker enclosure provided by the utility model loudspeaker enclosure progressive corresponding with using rigid walls in correlation technique Energy contrast test, detects the performance datas such as resonance peak and the distortion spike of the loudspeaker enclosure.Refer to Fig. 6, Fig. 7, wherein Fig. 6 Resonance peak for loudspeaker enclosure provided by the utility model loudspeaker enclosure corresponding with using rigid walls in correlation technique contrasts song Line chart；Fig. 7 is loudspeaker enclosure provided by the utility model loudspeaker enclosure distortion point corresponding with using rigid walls in correlation technique Peak contrast curve.Curve c represents to use the resonance peak curve of loudspeaker enclosure corresponding to rigid walls in correlation technique in Fig. 6, bent Line d represents the resonance peak curve of loudspeaker enclosure provided by the utility model；Curve e is represented in correlation technique using rigidity in Fig. 7 The distortion spiked profiles of loudspeaker enclosure corresponding to wall, curve f represent that the distortion spike of loudspeaker enclosure provided by the utility model is bent Line.

By accompanying drawing 6, Fig. 7 data it can be seen from using the loudspeaker enclosure of elastic cover plate compared to being used in correlation technique The loudspeaker enclosure of rigid walls, its resonance peak substantially reduce；And distortion spike equally substantially reduces.

Above-described is only embodiment of the present utility model, it should be noted here that the ordinary skill for this area For personnel, on the premise of not departing from the utility model and creating design, improvement can also be made, but these belong to this practicality New protection domain.

Claims

1. a kind of loudspeaker enclosure, including housing and the loudspeaker monomer that is contained in the housing, the loudspeaker monomer include For the vibrating diaphragm of vibration sounding, the vibrating diaphragm is arranged at intervals to form the preceding operatic tunes with the housing, and the loudspeaker enclosure also includes connecting Lead to the preceding operatic tunes and lead sound passage with extraneous, the preceding operatic tunes is led before sound passage collectively forms the loudspeaker enclosure with described Chamber, it is characterised in that the position that the ante-chamber is corresponded on the housing is provided with the through hole for running through housing, and the loudspeaker enclosure also wraps The elastic cover plate for being used to absorb the energy of the vibration under particular resonant frequency that the through hole is connected and covered with the housing is included, The elastic cover plate includes sheet metal and is arranged on the elasticity for connecting the sheet metal and the housing of the sheet metal periphery Material.

2. loudspeaker enclosure according to claim 1, it is characterised in that the through hole is set with the loudspeaker monomer face Put.

3. loudspeaker enclosure according to claim 1, it is characterised in that the elastomeric material is set around the sheet metal, The inner side of the elastomeric material is embedded in the depressed part and the elastomeric material formed with depressed part, the periphery of the sheet metal Connection.

4. loudspeaker enclosure according to claim 3, it is characterised in that the housing is additionally provided with groove in the through hole, The elastomeric material is arranged in the groove.

5. loudspeaker enclosure according to claim 4, it is characterised in that the groove includes adjacent with the through hole first Plane and the second plane extended from first plane to the hull outside, the elastomeric material and first plane It is bonded with second plane.

6. loudspeaker enclosure according to claim 5, it is characterised in that it is flat that the sheet metal is at least partially disposed at described first The top in face.

7. loudspeaker enclosure according to claim 1, it is characterised in that the elastomeric material passes through double-colored note with the housing Modeling or hot pressing or stickup or ultrasonic bonding form a fixed connection.

8. loudspeaker enclosure according to claim 1, it is characterised in that the elastomeric material is thermoplastic polyurethane elastic One kind in body, methyl cyclopentenyl ketone or silica gel.

9. loudspeaker enclosure according to claim 1, it is characterised in that the elastic cover plate absorb resonant frequency be 3000~ The energy of 7000Hz vibration.