CN208424752U - The rear audio cavity structure of loudspeaker in a kind of provision for sealing - Google Patents

Abstract

The utility model relates to the audio areas of electronic equipment, disclose a kind of rear audio cavity structure of loudspeaker in provision for sealing, the provision for sealing includes the loudspeaker in shell and setting on the inner wall of the housing, shell is equipped with the first relief hole, and the inner wall of shell is equipped with the waterproof ventilated membrane of the first relief hole of covering；Wherein, separator is additionally provided in shell, shell is divided into mutual disconnected first chamber to separator and second chamber, first chamber are connected to the first relief hole, and loudspeaker is located in first chamber, which forms the rear sound chamber of loudspeaker.In above-described embodiment; by separator being arranged in shell to form two mutual disconnected chambers; it is connected to one of chamber with ambient atmosphere; and it is located at loudspeaker in the chamber; it is located at other electronic components influenced vulnerable to steam in another chamber; in this way, not only ensure that the normal work of loudspeaker, but also protection is formed on those electronic components influenced vulnerable to steam.

Description

The rear audio cavity structure of loudspeaker in a kind of provision for sealing

Technical field

The utility model relates to a kind of rear sound chambers of loudspeaker in the audio area of electronic equipment more particularly to provision for sealing Structure.

Background technique

Current outdoor camera is mostly IP67 waterproof requirement, i.e. full-closed water-proof, if equipment supports voice alarm function, The front end vibrating diaphragm face of loudspeaker is then required to be in communication with the outside, and loudspeaker border keeps sealing to guarantee that waterproof is wanted with machine case It asks, the rear end of loudspeaker is then in the airtight cavity of camera；It is corresponding with loudspeaker in shell in the audio cavity structure of loudspeaker Sound chamber and acoustic aperture, and the rear sound chamber using airtight chamber as loudspeaker out before part is arranged, and rear sound chamber and preceding sound chamber are mutually not Connection, after phase built-in temperature increases, the intracavitary air pressure of rear sound can also be increased, and excessively high air pressure acts on the vibration of loudspeaker On film, it is easy to cause diaphragm deformation, influences the normal work of loudspeaker.

To prevent the hypertonia in camera from loudspeaker being caused to can not work normally, conventional way is in camera shell at present Aperture on body, and the hole is protected using waterproof ventilated membrane, this kind of scheme can make camera internal gas and the external world big Flowed between gas so that camera internal pressure is not too high, but the program can make steam by waterproof ventilated membrane into Enter camera internal, camera lens is caused to haze, makes camera can not normal imaging.

Utility model content

The utility model provides a kind of rear audio cavity structure of loudspeaker in provision for sealing, and use is so that sound chamber after loudspeaker Pressure is reduced, and guarantees the normal work of loudspeaker, while being formed and being protected vulnerable to the electronic component that steam influences on equipment inside Shield.

The utility model embodiment provides a kind of rear audio cavity structure of loudspeaker in provision for sealing, the provision for sealing packet It includes shell and the loudspeaker of the inner walls is set, and shell part corresponding with the loudspeaker is equipped with preceding sound Chamber and out acoustic aperture；The first relief hole is additionally provided on the shell, and the inner wall of the shell is equipped with and covers first pressure release The waterproof ventilated membrane in hole；Wherein,

It is additionally provided with separator in the shell, the shell is divided into mutual disconnected first chamber and the by the separator Two chambers, the first chamber are connected to first relief hole, and the loudspeaker is located in the first chamber, and described First chamber forms the rear sound chamber of the loudspeaker.

In above-described embodiment, the cavity of enclosure interior is divided into mutually disconnected the by the way that separator is arranged in shell One chamber and second chamber, wherein first chamber is connected to ambient atmosphere, and is located at loudspeaker in the chamber, second chamber For airtight chamber, for accommodating other electronic equipments, in this way setting not only ensure that loudspeaker normal work but also to it is other vulnerable to The electronic component that steam influences forms protection.

When specific setting, the separator includes the side wall being arranged in a tubular form, the both ends of the side wall respectively with the shell The inner wall of body connects, and the inner wall of the side wall and the shell forms the first chamber and the second chamber.Side wall is formed One is used to accommodate the space of loudspeaker, so that loudspeaker be separated to come with the intracorporal other electronic equipments of shell.

Alternatively, the separator includes at least one isolation board, the inner wall of described at least one isolation board and the shell Form the first chamber and the second chamber.If separator includes an isolation board, which is arranged in shell, will The intracorporal space of shell is divided into two mutual disconnected chambers or separator includes two or more separators, these isolation Plate surrounds one for accommodating the space of loudspeaker, and loudspeaker and the intracorporal other electronic equipments of shell are separated.

Optionally, the separator further includes the bottom wall for being fixed on described side wall one end, and the bottom wall is pressed on described anti- On water ventilated membrane, and the second relief hole is additionally provided on the bottom wall, second relief hole is connected to first relief hole.

The gap between bottom wall and shell such as steam enters in second chamber in order to prevent, influences other electronic equipments Work normally, the inner wall of the shell is equipped with the bulge loop around bottom wall setting, and in the bulge loop, the shell it is interior Wall and the bottom wall are tightly connected by dispensing, or are tightly connected by sealing ring.When between separator and shell use dispensing The excessive glue groove for accommodating glue can be formed when sealing, between bulge loop and separator, improve sealing effect；When separator and shell When being tightly connected between body by sealing ring, bulge loop can limit the movement on separator surface on the inner wall of the housing, have limit effect Fruit.

In the other end of side wall, in order to improve the leakproofness in shell between different structure, optionally, the side wall and institute It states and is connected between the outer wall of loudspeaker by glue sealing.

Optionally, sealing ring is equipped between the loudspeaker and the inner wall of the shell, the loudspeaker passes through described close Seal is connect with the housing seal.

Optionally, the provision for sealing is camera.By camera casing internal be arranged separator make loudspeaker with The electronic equipments such as the intracorporal camera lens of shell are kept apart, and prevent steam from influencing the imaging of camera lens.

Detailed description of the invention

Fig. 1 is a kind of Structure explosion diagram of provision for sealing provided by the embodiment of the utility model；

Fig. 2 is the sectional view of provision for sealing shown in FIG. 1；

Fig. 3 is a kind of partial enlarged view of the provision for sealing shown in Fig. 2 in a-quadrant；

Fig. 4 is another partial enlarged view of the provision for sealing shown in Fig. 2 in a-quadrant.

Appended drawing reference:

10- shell 101- the first relief hole 102- bulge loop

11- front housing 12- rear shell

20- waterproof ventilated membrane 30- loudspeaker

40- separator 41- side wall 42- bottom wall the second relief hole of 421-

51- first chamber 52- second chamber

60- screw 70- collision mat 80- sealing ring 90- camera lens

Specific embodiment

It is practical to this below in conjunction with attached drawing in order to keep the purpose of this utility model, technical solution and advantage clearer It is novel to be described in further detail, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work Under the premise of all other embodiment obtained, fall within the protection scope of the utility model.

The utility model embodiment provides a kind of rear audio cavity structure of loudspeaker in provision for sealing, which is anti- The more demanding electronic equipment of water, such as outdoor camera, once there is steam to enter camera internal, it is likely that cause camera lens to haze, So that can not normal imaging, therefore, outdoor camera generally all with IP67 waterproof requirement.In addition, these provision for sealings are usual In inside, setting loudspeaker realizes voice alarm function, and the sound chamber of loudspeaker, which has, is modified sound, prevents the work of noise With sound chamber includes preceding sound chamber, rear sound chamber, out acoustic aperture etc., wherein preceding sound chamber and the out area of acoustic aperture can be to the middle height of sound Frequency is partially modified, and rear sound chamber can be modified the low frequency part of sound, in the prior art, usually in entire shell Rear sound chamber of the cavity as loudspeaker, reduce internal pressure by the way that relief hole is arranged on shell, but make shell simultaneously Interior other electronic equipments are easy to be influenced by steam.The utility model embodiment is by being arranged separator in shell with shape At two mutual disconnected chambers, it is connected to one of chamber with ambient atmosphere, and be located at loudspeaker in the chamber, makes it It is located in another chamber vulnerable to the electronic component that steam influences, in this way, not only ensure that the normal work of loudspeaker, but also to that The electronic component influenced a bit vulnerable to steam forms protection.

Specifically, the provision for sealing includes the loudspeaker in shell and setting on the inner wall of the housing, and shell and loudspeaker Corresponding part is equipped with preceding sound chamber and out acoustic aperture；It is additionally provided with the first relief hole on shell, and the inner wall of shell is equipped with covering the The waterproof ventilated membrane of one relief hole；Wherein,

It is additionally provided with separator in shell, shell is divided into mutual disconnected first chamber and second chamber by separator, and first Chamber is connected to the first relief hole, and loudspeaker is located in first chamber, which forms the rear sound chamber of loudspeaker.

In above-described embodiment, loudspeaker is isolated with the intracorporal other electronic equipments of shell by the way that separator is arranged in shell It opens, the first chamber as where loudspeaker is connected to the first relief hole, and to be covered with waterproof saturating on the surface of the first relief hole Air film, the phenomenon that keeping circulation between first chamber and ambient atmosphere to ensure that, be not in hypertonia, while can Liquid water is stopped to enter first chamber；In addition, first chamber is not connected to mutually with second chamber, the first chamber is entered by waterproof ventilated membrane The steam of room will not enter inside second chamber, both will not influence the normal work of other electronic equipments, and ensure that and entirely set Standby degree of protection.

Understanding to the rear audio cavity structure of loudspeaker in provision for sealing provided by the embodiment of the utility model for convenience, under Face combines specific attached drawing and embodiment that its structure is described in detail.

In Structure explosion diagram as shown in Figure 1, which includes shell 10, and shell 10 is formed for accommodating electronics member The cavity of part, these electronic components include loudspeaker 30, power supply, circuit board etc., and specifically when setting, loudspeaker 30 is located at shell 10 Inner wall on, loudspeaker 30 is a kind of energy transducer that electric signal is changed into acoustical signal, wherein the sound formed in shell 10 Cavity configuration plays a significant role the sound quality of sound, specifically, being equipped with preceding sound chamber in the part corresponding with loudspeaker 30 of shell 10 And acoustic aperture out, preceding sound chamber and the out area of acoustic aperture can the medium-high frequency part to sound be modified, preceding sound chamber and go out Acoustic aperture has a variety of setting forms, is no longer discussed in detail herein.It is additionally provided with the first relief hole 101 on shell 10, and shell 10 Inner wall is equipped with the waterproof ventilated membrane 20 of the first relief hole 101 of covering, and waterproof ventilated membrane 20 can be adhered to shell by glue etc. On 10 inner wall, the area coverage of waterproof ventilated membrane 20 is greater than the cross-sectional area of the first relief hole 101, and waterproof ventilated membrane 20 allows Exchange, circulation between gas, but liquid water can be formed and be stopped；Separator 40 is additionally provided in shell 10, separator 40 will Shell 10 divides for mutual disconnected first chamber 51 and second chamber 52, wherein first chamber 51 and the first relief hole 101 connect It is logical, and loudspeaker 30 is located in first chamber 51, first chamber 51 forms the rear sound chamber of loudspeaker 30, and rear sound chamber can be to sound Low frequency part be modified, pass through sound chamber and 30 parameter of loudspeaker after matching, improve sound quality；It is other to be influenced vulnerable to steam Electronic equipment be located in second chamber 52, second chamber 52 be airtight chamber.In this way, the first chamber 51 where loudspeaker 30 It is connected to by the holding of the first relief hole 101 and ambient atmosphere, the phenomenon that so that being not in hypertonia in first chamber 51, into And avoid influence of the high pressure to 30 vibrating diaphragm of loudspeaker；Separator 40 by moisture barrier except second chamber 52, to the second chamber The electronic component being affected in room 52 by steam, such as the camera lens 90 of camera shield, meanwhile, the first relief hole 101 Surface be covered with waterproof ventilated membrane 20, liquid water can be stopped to enter first chamber 51 so that whole equipment can satisfy it is anti- Water requirement.In addition, the normal work in order to guarantee loudspeaker 30, cable is arranged in shell 10, and by cable one end and loudspeaking Device 30 be electrically connected, the other end pass through separator 40 be electrically connected with the associated electronic components in second chamber 52, and cable be isolated It is tightly connected between part 40.

Separator 40 is there are many form is arranged, if separator 40 includes at least one isolation board, by isolation board in shell First chamber 51 and second chamber 52 are formed in 10.Specifically, separator 40 may include an isolation board, the side of the isolation board The inner wall of edge and shell 10 is fixed and is tightly connected, so that shell 10 is divided into two mutual disconnected chambers；Separator 40 It also may include two or more isolation boards, these isolation boards are formed in shell 10 for accommodating loudspeaker 30 by combination First chamber 51, remaining space in shell 10 is as the second chamber 52 for accommodating other electron component, also, two phases It seals between the isolation board to connect and between isolation board and the inner wall of shell 10 to reach good waterproof effect.

In another setting form, in order to improve sealing effect, the leakage generated between different structure in junction is reduced Gas risk, separator 40 include the side wall 41 being arranged in a tubular form, and the both ends of side wall 41 are connect with the inner wall of shell 10 respectively, side wall 41 form above-mentioned first chamber 51 and second chamber 52 with the inner wall of shell 10.Fig. 1, Fig. 2 are referred to together, since side wall 41 is in song Face is arranged and surrounds the tubular structure with cavity, therefore it may only be necessary to sealed at the both ends of side wall 41 and shell 10, thus Reduce the generation in gap.When specific setting, as shown in Figure 1, wherein shell 10 includes front housing 11 and fixes company with front housing 11 The rear shell 12 connect, side wall 41 are arranged between front housing 11 and rear shell 12, and are tightly connected respectively with front housing 11 and rear shell 12. In a specific embodiment, separator 40 further includes the bottom wall 42 for being fixed on 41 one end of side wall, side wall 41 and bottom wall 42 It can be structure as a whole, can also be fixedly connected by modes such as welding；Wherein, bottom wall 42 is pressed on waterproof ventilated membrane 20, Keep waterproof ventilated membrane 20 stronger, bottom wall 42 is equipped with the second relief hole 421, the second relief hole 421 and the first relief hole 101 Connection, specifically, the second relief hole 421 is aligned with the center line of the first relief hole 101.When being sealed, in side wall 41 One end, the inner wall of shell 10 are equipped with the bulge loop 102 being arranged around bottom wall 42, and in bulge loop 102, the inner wall and bottom wall of shell 10 42 are tightly connected by dispensing, or are tightly connected by sealing ring 80.As shown in figure 3, when being used between bottom wall 42 and shell 10 When dispensing seals, the excessive glue groove for accommodating glue can be formed between bulge loop 102 and side wall 41, in dispensing, by liquid glue Water seal, to prevent glue from spreading around, is conducive to improve sealing effect there are in the excessive glue groove；As shown in figure 4, working as bottom wall 42 When being tightly connected between shell 10 by sealing ring 80, bulge loop 102 and side wall 41 are fitted close, and can limit entire separator 40 10 inner wall surface of shell movement, improve reliability of structure.In the other end of side wall 41, loudspeaker 30 is located at side wall 41 It in the cavity of formation, and is connect between side wall 41 by glue sealing, the end of loudspeaker 30 is pressed on the inner wall of shell 10 On, further, sealing ring 80 is equipped between loudspeaker 30 and the inner wall of shell 10, loudspeaker 30 passes through sealing ring 80 and shell 10 are tightly connected.

Alternatively, in another particular embodiment of the invention, in one end of side wall 41, side wall 41 and rear shell 12 are integrated knot Structure；In the other end of side wall 41, loudspeaker 30 is located in the cavity of the formation of side wall 41, and passes through glue sealing between side wall 41 Connection, the end of loudspeaker 30 is pressed on the inner wall of shell 10, preferably, being equipped between loudspeaker 30 and the inner wall of shell 10 Sealing ring 80, loudspeaker 30 are tightly connected by sealing ring 80 and shell 10.In assembling, the side in rear shell 12 will be located at first Wall 41 is fixed and is sealed by glue with loudspeaker 30, is then arranged sealing ring 80 in the end of loudspeaker 30, and by side wall 41 It protrudes into front housing 11, is pressed on loudspeaker 30 on the inner wall of front housing 11, finally twist front housing 11 by screw 60 with rear shell 12 Tightly it is fixed.

FIG. 1 to FIG. 4 is referred to together, which is specially a kind of electronics such as camera, including loudspeaker 30, camera lens 90 member Part, wherein shell 10 includes front housing 11 and rear shell 12, collision mat 70 is equipped between front housing 11 and rear shell 12, and pass through screw 60 It is fixedly connected, separator 40 is tightly connected between front housing 11 and rear shell 12, and respectively with front housing 11 and rear shell 12, isolation Part 40 is formed by the side wall 41 that is arranged in a tubular form and the bottom wall 42 for being fixed on 41 one end of side wall, and loudspeaker 30 is located in side wall 41 In chamber, i.e., in first chamber 51, the equal electronic components of camera lens 90 are located in second chamber 52, also, first chamber 51 passes through first Relief hole 101 is connected to ambient atmosphere, and second chamber 52 is an airtight chamber, in this way, both ensure that the normal of loudspeaker 30 Work, generates water mist after also capable of preventing steam from entering second chamber 52, to influence the imaging of camera lens 90.

In the utility model embodiment it can be seen from above description, by the way that separator 40 is arranged in shell 10 by shell Cavity inside body 10 is divided into two mutual disconnected chambers, is connected to one of chamber with ambient atmosphere, and make loudspeaking Device 30 is located in the chamber, and is located at other electronic components influenced vulnerable to steam in another chamber, in this way, both ensure that The normal work of loudspeaker 30, and protection can be formed on those electronic equipments influenced vulnerable to steam.

Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.

Claims (8)

1. the rear audio cavity structure of loudspeaker in a kind of provision for sealing, the provision for sealing includes shell and is arranged in the shell The loudspeaker of inner wall, and shell part corresponding with the loudspeaker is equipped with preceding sound chamber and out acoustic aperture；On the shell It is additionally provided with the first relief hole, and the inner wall of the shell is equipped with the waterproof ventilated membrane for covering first relief hole；Its feature exists In,

Separator is additionally provided in the shell, the shell is divided into mutual disconnected first chamber and the second chamber by the separator Room, the first chamber are connected to first relief hole, and the loudspeaker is located in the first chamber, first chamber Room forms the rear sound chamber of the loudspeaker.

2. audio cavity structure after as described in claim 1, which is characterized in that the separator includes the side wall being arranged in a tubular form, The both ends of the side wall are connect with the inner wall of the shell respectively, and the inner wall of the side wall and the shell forms first chamber Room and the second chamber.

3. audio cavity structure after as described in claim 1, which is characterized in that the separator includes at least one isolation board, institute The inner wall for stating at least one isolation board and the shell forms the first chamber and the second chamber.

4. audio cavity structure after as claimed in claim 2, which is characterized in that the separator further includes being fixed on the side wall one The bottom wall at end, the bottom wall are pressed on the waterproof ventilated membrane, and the bottom wall is equipped with the second relief hole, and described second lets out Pressure hole is connected to first relief hole.

5. audio cavity structure after as claimed in claim 4, which is characterized in that the inner wall of the shell, which is equipped with, surrounds the bottom wall The bulge loop of setting, and in the bulge loop, the inner wall of the shell and the bottom wall are tightly connected by dispensing, or pass through sealing ring It is tightly connected.

6. audio cavity structure after as claimed in claim 2, which is characterized in that lead between the side wall and the outer wall of the loudspeaker Cross glue sealing connection.

7. audio cavity structure after as claimed in claim 6, which is characterized in that set between the loudspeaker and the inner wall of the shell There is sealing ring, the loudspeaker is connect by the sealing ring with the housing seal.

8. audio cavity structure after as described in any one of claims 1 to 7, which is characterized in that the provision for sealing is camera.