Patent Application
20180359545
The present invention relates to the technical field of acoustic energy conversion, and in particular, to a speaker and a rear cover therefor.
Structural design requirements of a speaker (SPK), as a component of a mobile phone, are becoming stricter. At a local position of a module, multiple structures often need to cooperate to realize a variety of functions. Exemplarily, for a stamped part in the SPK, sometimes, it is required to lead out a plurality of structures from the local, such as an electric contact conduction structure, a cable fixing structure and a screw fixation structure. However, a single steel sheet cannot realize these complex structures due to the limitations of a stamping raw material, a stamping process, plating and other factors.
An object of the present invention is to provide a new technical solution of a speaker rear cover with multiple functions.
According to a first aspect of the present invention, there is provided a speaker rear cover. The rear cover comprises a rear cover body whose one side is provided with a first connection portion; and a connection assembly provided with a first surface and a second surface which are connected with each other.
A contact is formed by extending and bending the first surface, and is provided with a conductor; and a connection hole is further formed in the first surface.
A limiting device and a second connection portion are arranged on the second surface. The cross section of the limiting device is C-shaped. The connection assembly is connected to the first connection portion of the rear cover body through the second connection portion.
Preferably, the first surface is perpendicular to the second surface.
Preferably, the conductor is arranged on the contact through electroplating or electroless plating.
Preferably, the conductor is made of gold, tin or nickel.
Preferably, the connection manner between the first connection portion and the second connection portion is welding, riveting or elastic contact connection.
Preferably, the connection manner is the elastic contact connection.
A U-shaped structure is formed by bending and extending the two opposite sides of the second connection portion.
A first external wall and a second external wall opposite to each other are arranged on the first connection portion. A distance between the first external wall and the second external wall is greater than a distance between two sides of the U-shaped structure.
The two sides of the U-shaped structure clamp the outer sides of the first external wall and the second external wall to form a set clamping force, so as to enable stable connection.
Preferably, the connection assembly is made of a metal.
Preferably, the thickness of the rear cover body is 0.15-0.2 mm.
Preferably, the rear cover body and/or the connection assembly are/is formed by stamping.
Another object of the present invention is to provide a speaker.
According to another aspect of the present invention, there is provided a speaker. The speaker comprises the rear cover provided by the present invention.
The speaker rear cover provided by the present invention is provided with the rear cover body and the connection assembly connected with the rear cover body. The rear cover body and the connection assembly are separately manufactured and then are connected. The connection assembly comprises the contact provided with the conductor, the connection hole and the limiting structure. The contact is configured to conduct the speaker with the outside. The connection hole is configured to fix the speaker or conduct the speaker with other components. The limiting device is configured to fix a cable. With the separate design, the rear cover is simpler in structure, more convenient to manufacture and higher in production yield, and integrates multiple functions. The speaker has the characteristics of being higher in integration, more convenient to mount and wider in application.
The inventor of the present invention finds that in the prior art, a speaker rear cover is single in structure and low in applicability. Therefore, the technical task to be achieved or the technical problem to be solved by the present invention is unintentional or unanticipated for those skilled in the art, and thus the present invention refers to a novel technical solution.
Further features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments according to the present invention with reference to the accompanying drawings.
The accompanying drawings, which are incorporated in and constitute a part of the description, illustrate embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention.
1: rear cover body;
101: first connection portion;
2: connection assembly;
201: contact;
202: connection hole;
203: second connection portion;
204: limiting device;
205: screw;
206: cable;
3: middle cover;
4: upper cover; and
5: magnetic circuit assembly.
Various exemplary embodiments of the present invention will now be described in detail with reference to the drawings. It should be noted that the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.
Techniques and equipment as known by one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the description where appropriate.
In all of the examples illustrated and discussed herein, any specific values should be interpreted to be illustrative only and non-limiting. Thus, other examples of the exemplary embodiments could have different values.
Notice that similar reference numerals and letters refer to similar items in the following figures, and thus once an item is defined in one figure, it is possible that it need not be further discussed in the accompanying drawings.
The present invention provides a speaker rear cover. Referring to
In general, the rear cover body 1 is manufactured separately. The rear cover body 1 is sheet-shaped, and is made of a metal. In a preferred embodiment, the rear cover is made of stainless steel. Considering that the stainless steel may also rust after long-term use, more preferably, the surface of the rear cover is plated with a nickel metal layer to prolong the service life of the rear cover. The thickness of the rear cover is 0.15-0.2 mm. Of course, the shape and the material of the rear cover may be selected according to needs as long as the strength and durability requirements can be met, and are not limited in the present invention.
In use, referring to
Referring to
In order to make the connection more stable, referring to
Alternatively, in another embodiment of the present invention, the connection manner is the elastic contact connection. A U-shaped structure is formed by bending and extending the two opposite sides of the second connection portion 101. Similarly, the opening of the U-shaped structure may be horizontal or vertical, or may be at other angles. A first external wall and a second external wall opposite to each other are arranged on the second connection portion 203. A distance between the first external wall and the second external wall is greater than that between the two sides of the U-shaped structure. For facilitating processing, the second connection portion 203 is rectangular, and the two opposite sides of the rectangle are the first external wall and the second external wall. The two sides of the U-shaped structure clamp the outer sides of the first external wall and the second external wall to form a set clamping force, so as to enable stable connection. Of course, the second connection portion 203 may also be cylindrical or may be in other shapes as long as it is provided with the first and second external walls opposite to each other; and the distance between the first and second external walls is greater than that between the two sides of the U-shaped structure to enable the two sides of the U-shaped structure to clamp the outer sides of the first and second external walls, which is not limited in the present invention.
Further, the second surface is further provided with a limiting device 204. The device is configured to fix the position of multiple strands of cables 206, so that the cables 206 are prevented from moving arbitrarily during the use of equipment to be mounted. As a result, the equipment is prevented from damage caused by a scratched insulating jacket and other loose components. For facilitating processing and use, referring to
Further, referring to
In order to ensure a large contact area and a firm connection between the conductor and the contact 201, in an embodiment of the present invention, the conductor is arranged on the contact 201 by electroplating or electroless plating. The separate arrangement manner can also avoid contamination of the rear cover body 1 during electroplating or electroless plating. The conductor is made of gold, tin or nickel. Of course, the conductor may also be arranged on the contact 201 through other manners as long as the connection manner can ensure sufficient connection stability, which is limited in the present invention. In addition, the conductor may also be made of other metals as long as good electrical conductivity is ensured.
Referring to
In addition, the connection hole 202 may also have the electrical connection function. In another embodiment of the present invention, the connection assembly 2 is made of copper alloy or aluminum alloy which has excellent electrical conductivity. Through the connection with the outside wire, electrical conduction between an internal circuit of the speaker and an outside circuit can be achieved. During connection, a wire of the internal circuit of the speaker, such as a wire of a voice coil, is connected to the connection assembly 2; and then, a cable lug plate (namely, a cable lug) of a wire of the outside circuit, or a mounting hole at a feeding point is electrically connected with the connection hole 202 through the screw 205 or a bolt. In this way, the electrical conduction between the internal circuit of the speaker and the outside circuit can be achieved. The connection is very convenient.
For facilitating processing and manufacturing, the rear cover body 1 and/or the connection assembly 2 are/is processed by an integral stamping process. For example, the rear cover body 1 or the connection assembly 2 is formed by integrally stamping a sheet. During processing, the structures of the first connection portion 101 and the second connection portion 203 should be matched with each other to facilitate connection. After being separately formed, the first connection portion 101 of the rear cover body 1 and the second connection portion 203 of the connection assembly 2 are connected to form the rear cover provided by the present invention. In addition, the stamping forming process can produce a connection assembly with a complex structure as required. The processing is very convenient. In addition, as the separate manufacturing manner is adopted, the processing steps are reduced, and the processing difficulty is reduced. Therefore, the yield is improved.
The speaker rear cover provided by the present invention is provided with the rear cover body 1 and the connection assembly 2 connected with the rear cover body 1. The assembly comprises the contact 201 provided with the conductor, the connection hole 202 and the limiting structure. The contact 201 is configured to conduct the speaker with the outside. The connection hole 202 is configured to fix the speaker or conduct the speaker with other components. The limiting device 204 is configured to fix the cable. With the separate design, the rear cover is simpler in structure, more convenient to manufacture and higher in production yield, and integrates multiple functions.
The present invention further provides a speaker. Referring to
Although some specific embodiments of the present invention have been demonstrated in detail with examples, it should be understood by a person skilled in the art that the above examples are only intended to be illustrative but not to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201510874212.7 | Dec 2015 | CN | national |
This application is a National Stage of International Application No. PCT/CN2016/081404, filed on May 9, 2016, which claims priority to Chinese Patent Application No. 201510874212.7, filed on Dec. 2, 2015, both of which are hereby incorporated by reference in their entireties.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2016/081404 | 5/6/2016 | WO | 00 |
