CN214480714U - Rear cover and terminal equipment with same - Google Patents

Abstract

The application discloses back lid and have its terminal equipment includes: a rear cover body; vibrating diaphragm; and the vibrating diaphragm and the rear cover body are connected through the flexible connecting piece. The application provides a back lid and have its terminal equipment utilizes flexible connectors to carry out flexonics between lid body through vibrating diaphragm and back, can increase the amplitude of vibrating diaphragm, especially can improve the amplitude of bass part, is showing the degree that lacks that reduces the bass part, improves terminal equipment's sound production performance, promotes user experience.

Description

Rear cover and terminal equipment with same

Technical Field

The utility model relates to an electronic equipment field, concretely relates to back lid and have its terminal equipment.

Background

With the development of mobile phone sound production technology, the conventional mobile phone generally bonds the piezoelectric patch on the screen or the rear cover directly through glue, and the piezoelectric patch drives the screen or the rear cover to vibrate to produce sound, so that the sound production function of the mobile phone is realized.

Because screen and back lid are rigid material, and are the rigid connection between screen and the center and between back lid and the center for the effective amplitude of screen and back lid is lower, especially can lead to the condition that more disappearance appears in the bass part, influences the sound production performance of cell-phone.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide a rear cover and a terminal device having the same.

In a first aspect, the present application provides a rear cover comprising:

a rear cover body;

vibrating diaphragm;

and the vibrating diaphragm and the rear cover body are connected through the flexible connecting piece.

In some embodiments, the diaphragm is suspended on the back cover body by a flexible connecting member.

In some embodiments of the present application, the back cover body is provided with an avoiding portion, and the diaphragm is suspended in the avoiding portion, wherein the avoiding portion is a groove or an opening portion disposed therethrough.

In some embodiments, the diaphragm is suspended on one side of the back cover body.

In some embodiments, when the relief portion is an opening portion, the flexible connector is an annular structure disposed around the diaphragm to seal between the diaphragm and the opening portion.

In some embodiments, the inner ring end of the flexible connecting member is connected with the circumferential edge of the diaphragm in a sealing manner, and the outer ring end of the flexible connecting member is located on the periphery of the opening portion and is bonded to the back cover body in a sealing manner.

In some embodiments, the flexible connector is flat; or the flexible connecting piece also comprises a connecting part for connecting the inner ring end and the outer ring end, and the cross section of the connecting part is arc-shaped and protrudes out of the inner ring end and the outer ring end along the direction far away from the rear cover body.

In some embodiments, the diaphragm is positioned on a side of the inner ring end adjacent to the opening portion.

In some embodiments, the flexible connector is an elastomeric material.

In a second aspect, the present application further provides a terminal device, including a rear cover.

The application provides a back lid and have its terminal equipment utilizes flexible connectors to carry out flexonics between lid body through vibrating diaphragm and back, can increase the amplitude of vibrating diaphragm, especially can improve the amplitude of bass part, is showing the degree of lacking that reduces the bass part, promotes terminal equipment's sound production performance, improves user experience.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a front view of a rear cover according to an embodiment of the present disclosure;

FIG. 2 is a rear view of the structure shown in FIG. 1;

FIG. 3 is a perspective view of the structure shown in FIG. 1;

FIG. 4 is a cross-sectional view A-A of FIG. 1;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is a perspective view of the flexible connector of FIG. 1;

FIG. 7 is a front view of a rear cover according to another embodiment of the present application;

FIG. 8 is a rear view of the structure shown in FIG. 7;

FIG. 9 is a perspective view of the structure shown in FIG. 7;

FIG. 10 is a cross-sectional view taken at C-C of FIG. 7;

FIG. 11 is an enlarged view of portion D of FIG. 10;

FIG. 12 is a front view of the flexible connector of FIG. 7;

FIG. 13 is a perspective view of the flexible connector of FIG. 7;

fig. 14 is a schematic diagram of a sounding frequency response curve of a diaphragm according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

Referring to fig. 1 to 13, an embodiment of the present application provides a rear cover, including:

a rear cover body 100;

a diaphragm 200;

the flexible connector 300, the diaphragm 200 and the back cover body 100 are connected by the flexible connector 300.

In the present embodiment, the back cover includes a back cover body 100, a diaphragm 200, and a flexible connection member 300. The diaphragm 200 may be mechanically vibrated by an external driving mechanism, and sound may be generated by pushing air to vibrate through the mechanical vibration of the diaphragm 200. The vibrating diaphragm 200 is connected to the rear cover body 100 through the flexible connecting piece 300, so that the vibrating diaphragm 200 and the rear cover body 100 are flexibly connected, and compared with the rigid connection in the prior art, the vibration amplitude of the vibrating diaphragm 200 can be increased, and the sound production performance of the terminal device is improved. Especially for the bass part, the amplitude of the bass part can be improved, the shortage degree of the bass part is obviously reduced, the sound production performance of the bass part is improved, and the user experience is improved. Specifically, referring to fig. 14, E represents a sound frequency response curve of the diaphragm 200 in the present application under the action of the flexible connecting member 300, and F represents a sound frequency response curve of the screen or the rear cover in the prior art, based on fig. 14, it can be seen that the structure provided in this embodiment can significantly improve the vibration amplitude of the diaphragm 200 in the range of 200Hz to 10KHz, and improve the sound production performance of the bass portion.

The flexible connecting member 300 is made of a flexible material, including but not limited to an elastic material. When the flexible connecting member 300 is made of an elastic material, the flexible connecting member 300 has good resilience, which is beneficial to reducing the power loss of the electroacoustic transducer, and also beneficial to keeping the shape of the flexible connecting member 300, thereby improving the reliability of the electroacoustic transducer. The flexible connector 300 includes, but is not limited to, rubber, resin materials, and the like, such as thermoplastic elastomer (TPE), thermoplastic polyurethane elastomer (TPU), polyimide resin (PI), polyether ether ketone (PEEK), and the like.

The material of the rear cover body 100 includes, but is not limited to, glass, plastic, or metal, and the present application does not limit this.

In some embodiments of the present application, the diaphragm 200 is suspended on the back cover body 100 by a flexible connection member 300.

In this embodiment, the vibrating diaphragm 200 is disposed in a suspended manner relative to the rear cover body 100, and a certain suspension space is provided between the vibrating diaphragm 200 and the rear cover body 100, so that the vibratable amplitude of the vibrating diaphragm 200 can be increased, and the sound-generating performance of the terminal device is further improved.

In some embodiments of the present application, the back cover body 100 is provided with a relief portion, and the diaphragm 200 is suspended in the relief portion, wherein the relief portion 110 is a groove or an opening portion 110 disposed therethrough.

In this embodiment, the rear cover body 100 is provided with an avoiding portion, and the avoiding portion forms an avoiding space to avoid the vibrating diaphragm 200 or the vibrating diaphragm 200, so as to further expand the vibratable amplitude of the vibrating diaphragm 200 and further improve the sound production performance of the terminal device.

The rear cover body has a first side 101 and a second side 102 opposite to each other, and the first side 101 is a side close to the screen when the rear cover body 100 is assembled in the terminal device. The avoiding portion may be a groove concavely provided on the first side surface. Alternatively, the escape portion may be an opening 110 that penetrates the first side surface 101 and the second side surface 102. Dodge the portion when opening 110, can be convenient for dodge seting up of portion, reduce the processing degree of difficulty, simultaneously can also make the sound accessible opening 110 that vibrating diaphragm 200 formed spread out, the realization reduces the play sound region on back lid body 100 to opening 110, compare among the prior art and carry out the scheme of sound through whole back lid body 100, can show to reduce and leak the sound risk, simultaneously can also realize reducing the vibration region on back lid body 100 to opening 110, compare the scheme of whole back lid body 100 vibration among the prior art, show the uncomfortable sense of vibration that reduces the user when handheld back lid, improve user experience. In the rear cover body shown in fig. 1 to 5 and 7 to 11, the escape portion is an opening portion 110.

The diaphragm 200 may be partially located in the avoiding portion, or completely located in the avoiding portion, or located on one side of the avoiding portion. When the diaphragm 200 is at least partially located in the relief, particularly when the diaphragm 200 is fully located in the relief, it helps to reduce the overall thickness of the back cover.

In some embodiments of the present application, the diaphragm 200 is disposed on one side of the back cover body 100 in a floating manner, so that the back cover body 100 does not need to be provided with an avoiding portion, and the diaphragm 200 has a better amplitude.

The diaphragm 200 is suspended on a side of the back cover body 100 away from the second side surface 102, so as to prevent the diaphragm from being exposed out of the back cover body 100.

In some embodiments of the present application, when the relief portion is the opening portion 110, the flexible connecting member 300 is a ring-shaped structure disposed around the diaphragm 200 to seal between the diaphragm 200 and the opening portion 110.

In this embodiment, the annular flexible connecting member 300 seals between the diaphragm 200 and the opening portion 110, so that not only can a sound short circuit caused by the sound generated by the diaphragm 200 being transmitted between the rear cover and the middle frame of the terminal device be avoided, and the sound quality be improved, but also external impurities can be prevented from entering the terminal device through the gap between the diaphragm 200 and the opening portion 110, and the sealing performance of the terminal device be improved.

Of course, when the relief portion is a groove, the flexible connecting member 300 has a non-closed structure along the circumferential direction of the diaphragm 200, so that the sound generated by the diaphragm 200 can be transmitted.

In some embodiments of the present application, the inner ring end 310 of the flexible connecting member 300 is connected to the circumferential edge of the diaphragm 200 in a sealing manner, and the outer ring end 320 of the flexible connecting member 300 is located at the periphery of the opening portion 110 and is bonded to the back cover body 100 in a sealing manner.

In this embodiment, the flexible connecting member 300 is a ring structure disposed around the diaphragm 200, the flexible connecting member 300 has an inner ring end 310 and an outer ring end 320 disposed oppositely, and both the inner ring end 310 and the outer ring end 320 are ring structures. The inner ring end 310 of the flexible connecting piece 300 is connected with the circumferential edge of the vibrating diaphragm 200 in a sealing manner, the outer ring end 320 of the flexible connecting piece 300 is located at the periphery of the opening part 110 and is bonded to the rear cover body 100 in a sealing manner, so that the flexible connecting piece 300, the rear cover body 100 and the vibrating diaphragm 200 are convenient to connect in a sealing manner, the sealing performance between the opening part 110 and the vibrating diaphragm 200 is good, the size of the flexible connecting piece 300 can be controlled, and the cost is reduced and the whole thickness of the rear cover is reduced.

The sealing connection includes, but is not limited to, bonding, and the like, which is not limited in this application.

In some embodiments of the present application, the flexible connector 300 is a flat plate.

Referring to fig. 1 to 6, in the embodiment, the flexible connecting member 300 is a flat plate, so that the flexible connecting member 300 can provide a good vibration displacement to the diaphragm 200, and meanwhile, the flexible connecting member 300 has a simple structure and a small thickness, which is beneficial to reducing the cost and the thickness of the back cover.

In some embodiments of the present application, the flexible connector 300 further includes a connecting portion 330 connecting the inner ring end 310 and the outer ring end 320, and the cross section of the connecting portion 330 is circular arc and protrudes out of the inner ring end 310 and the outer ring end 320 in a direction away from the rear cover body 100.

Referring to fig. 7-13, in the present embodiment, the cross section of the connecting portion 330 is arc-shaped and protrudes out of the inner ring end 310 and the outer ring end 320 in a direction away from the back cover body 100, so that the deformation amount of the flexible connecting member 300 can be increased, and the amplitude of the diaphragm 200 can be increased.

Further, the flexible connecting member 300 can be a symmetrical structure, so that the flexible connecting member 300 has good deformation performance, and the flexible connecting member 300 can be conveniently processed and produced.

In some embodiments of the present application, the diaphragm 200 is located at a side of the inner ring end 310 close to the opening portion 110, such an arrangement enables the vibration limitation of the flexible connecting member 300 to the diaphragm 200 to be small, and the requirement on the flexibility of the flexible connecting member 300 is low when the effective amplitude of the diaphragm 200 is satisfied, and at the same time, the thickness of the back cover can be reduced.

Of course, in other embodiments, the diaphragm 200 is located on a side of the inner ring end 310 away from the opening 110.

The embodiment of the application also provides terminal equipment which comprises a rear cover.

In this embodiment, the terminal device includes, but is not limited to, a mobile phone, a tablet computer, and a wearable electronic device (e.g., an electronic watch). The terminal device includes a driving mechanism, and a driving end of the driving mechanism may be connected to the diaphragm 200 to drive the diaphragm 200 to vibrate. The mechanism for driving the diaphragm 200 to vibrate includes, but is not limited to, a piezoelectric plate, an exciter, etc., and the present application is not limited thereto.

It will be understood that any reference to the above orientation or positional relationship as indicated by the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., is intended to be based on the orientation or positional relationship shown in the drawings and is for convenience in describing and simplifying the invention, and does not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be considered as limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (10)

1. A rear cover, comprising:

a rear cover body;

vibrating diaphragm;

and the vibrating diaphragm is connected with the rear cover body through the flexible connecting piece.

2. The back cover of claim 1, wherein the diaphragm is suspended from the back cover body by the flexible connecting member.

3. The back cover of claim 2, wherein the back cover body is provided with a relief portion, and the diaphragm is suspended in the relief portion, wherein the relief portion is a groove or an opening portion penetrating the groove.

4. The back cover of claim 2, wherein the diaphragm is suspended on one side of the back cover body.

5. The back cover according to claim 3, wherein when the avoiding portion is the opening portion, the flexible connecting member is a ring structure disposed around the diaphragm to seal between the diaphragm and the opening portion.

6. The back cover of claim 5, wherein the inner ring end of the flexible connecting member is connected to the circumferential edge of the diaphragm in a sealing manner, and the outer ring end of the flexible connecting member is located at the periphery of the opening and is bonded to the back cover body in a sealing manner.

7. The rear cover according to claim 6, wherein the flexible connecting member is a flat plate; or the flexible connecting piece further comprises a connecting part which is connected with the inner ring end and the outer ring end, and the cross section of the connecting part is arc-shaped and protrudes out of the inner ring end and the outer ring end along the direction far away from the rear cover body.

8. The back cover of claim 6, wherein the diaphragm is located on a side of the inner ring end adjacent to the opening.

9. The rear cover according to any one of claims 1 to 8, wherein the flexible connecting member is made of an elastic material.

10. A terminal device, characterized in that it comprises a back cover according to any one of claims 1-9.

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