Receiver

A receiver is provided comprising an outside housing, and a magnetic circuit system and a vibration system accommodated in the outside housing. The vibration system comprises a vibration diaphragm and a voice coil. The outside housing comprises a first housing and a second housing matching with each other. The first housing and the second housing are provided with electrical connection structures conductive to one another thereon. The first housing is provided with a first elastic piece on a sidewall thereof. One end of the first elastic piece is welded with a spring electrically connected to an external circuit, and the other end is exposed at the outside of the sidewall of the first housing. The second housing is provided with a second elastic piece on a sidewall thereof. One end of the second elastic piece is electrically connected to a lead wire of the voice coil, and the other end of the second elastic piece is exposed at the outside of the sidewall of the second housing and is welded and fixed with the portion of the first elastic piece exposed at the outside. The receiver of the present utility model can reduce the lateral dimension of a product without impairing the performance of the product, and can satisfy the restrictive requirement on the lateral dimension of the product when assembled with a terminal electronic device.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a National Stage of International Application No. PCT/CN2016/089374, filed on Jul. 8, 2016, which claims priority to Chinese Patent Application No. 201520712320.X, filed on Sep. 15, 2015, both of which are hereby incorporated by reference in their entireties.

BACKGROUND

Technical Field

The present utility model relates to the field of electro-acoustics, and in particular, to a receiver.

Description of Related Art

Receivers are devices capable of realizing conversion of electrical energy and acoustic energy, and are widely applied in electronic terminal devices such as mobile phones and telephones. A traditional receiver structure generally comprises a magnetic path system, a vibration system and an external housing containing the magnetic path system the vibration system. In order to realize electrical connection between the receiver and the terminal electronic device, usually a middle housing is combined with an elastic sheet in an integral injection molding manner. The elastic sheet is electrically connected to a lead of a voice coil in the receiver, while the outside of the elastic sheet needs to be connected by a spring structure. In the prior art, one end of the spring is usually welded on the elastic sheet of the middle housing, while the other end thereof is connected to the terminal electronic device, thereby realizing transmission of an external current signal into the receiver.

However, as mentioned above, since the spring is welded with the elastic sheet of the middle housing, the product needs to extend transversely based on the existing vibration system to form a space for assembling the spring, a length size of the product is increased, and the requirement of the terminal device on limitation of a transverse assembling space cannot be met. The middle housing is located in a middle layer of the receiver product, and limited by the requirements of product assembling, the spring is difficult to guide to a vertical position of the vibration system. Therefore, a new design manner for an electrical connecting structure of the receiver needs to be provided, such that the spring can be guided to the vertical position of the vibration system under the premise of not affecting the product assembling and a transverse space.

BRIEF SUMMARY

The technical problem to be solved by the present utility model is to provide a receiver, and by the improvement on the position of an electrical connecting structure thereof, the spring connected to an external circuit is guided to be above the vibration system without affecting the assembling between the product and the terminal device and a transverse space.

In order to realize the above object, the present utility model adopts the following technical solution. A receiver comprises a housing, and a magnetic path system and a vibration system that are contained in the housing; wherein the vibration system comprises a vibration diaphragm and a voice coil; the housing comprises a first housing and a second housing matched with each other; the first housing and the second housing are provided with electrical connecting structures connected with each other, the receiver is characterized in that the side wall of the first housing is provided with a first elastic sheet; one end of the first elastic sheet is welded with a spring electrically connected to an external circuit, and the other end thereof is exposed outside the side wall of the first housing; the side wall of the second housing is provided with a second elastic sheet; one end of the second elastic sheet is electrically connected to a lead of the voice coil; the other end of the second elastic sheet is exposed outside the side wall of the second housing, and is welded and fixed with the exposed part of the first elastic sheet.

As an improvement, the vibration system is contained in a cavity of the second housing; and the spring is combined on the first housing and located above the vibration system.

As an improvement, the first elastic sheet comprises a first connecting end welded and fixed with the spring and a first exposed end exposed outside the side wall of the first elastic sheet; and the second elastic sheet comprises a second connecting end electrically connected to the lead of the voice coil and a second exposed end exposed outside the side wall of the second elastic sheet.

As an improvement, the first exposed end is provided with a bonding wire and the first exposed end is connected to the second exposed end by the bonding wire.

As an improvement, the first exposed end of the first elastic sheet and the second exposed end of the second elastic sheet horizontally extend to outer sides of the side walls of the first housing and the second housing of the receiver.

As an improvement, the first exposed end is bent to a direction of the second housing and is stuck to the side wall of the first housing; and the second exposed end is bent to a direction of the first housing and overlaps with the first exposed end.

As an improvement, wherein the first exposed end and the second exposed end are fixed by laser welding and are connected.

As an improvement, the second elastic sheet is provided with a bonding pad, and the lead of the voice coil is fixed on the bonding pad by spot welding.

As an improvement, the first elastic sheet and the second elastic sheet are arranged on the side walls at the same end of the first housing and the second housing.

As an improvement, the receiver further comprises a third housing and a hearing aid voice coil; wherein the third housing is matched with the second housing and is combined under the second housing; a central position of the vibration diaphragm is combined with a reinforcing part; a metal loop supporting the vibration diaphragm is combined on the bottom side of the vibration diaphragm; and the magnetic path system comprises a basin stand and a magnet and a washer that are fixed in the basin stand.

Compared with the prior art, the receiver of the present utility model has the advantages that the first housing is additionally provided with an elastic sheet structure (the first elastic sheet), one end of the first elastic sheet is welded with the spring, and the other end thereof is exposed on the side wall of the first housing, one end of the second elastic sheet on the second housing is welded with a lead of the voice coil, and the other end thereof is exposed on the side wall of the second housing, and the exposed parts of the first elastic sheet and the second elastic sheet are connected by welding of bonding wires. Due to the design of such an electrical connecting structure, the spring is transferred to be above the vibration system from a transverse position of the product, the transverse size of the product can be reduced under the premise of not reducing a size of the vibration system (without reducing the performance of the product), and the limitation requirement on the transverse size when the product and the terminal electronic device are assembled can be met.

DETAILED DESCRIPTION OF VARIOUS EMBODIMENTS

The present utility model is further explained in combination with the drawings and embodiments.

Embodiment I

Referring toFIG. 1, the receiver of the present utility model comprises a peripheral housing. Specifically, the peripheral housing comprises a first housing1, a second housing2and a third housing8which are matched with one another from top to bottom, and the three housings form a cavity containing a magnetic path system and a vibration system. Further, the magnetic path system comprises a basin stand11, a magnet12adhered to and fixed on the basin stand and a washer13covering the magnet12. The vibration system comprises a vibration diaphragm7and a voice coil6adhered to the vibration diaphragm7, and the vibration diaphragm7can be fixed with the second housing2by a metal loop10capable of supporting the vibration diaphragm7. In addition, in order to enhance the performance of the product at a high frequency, a central position of the vibration diaphragm7is also combined with a reinforcing part9which is generally a rigid composite layer structure.

As mentioned above, in the magnetic path system, a certain distance exists between the side wall of the basin stand11and the magnet12and forms a magnetic gap. The lower end of the voice coil6is disposed in the magnetic gap. The voice coil6also comprises a voice coil lead61electrically connected to an electrical connecting structure of the receiver.

Referring toFIG. 1, according to the receiver of the present utility model, the first housing1and the second housing2are provided with electrical connecting structures connected with each other. The side wall of the first housing1is provided with a first elastic sheet3. During implementation, the first elastic sheet3and the first housing1are formed by integral injection molding. One end of the first elastic sheet3is welded with a spring5electrically connected to an external circuit, while the other end thereof is exposed outside the side wall of the first housing1. Similarly, the side wall of the second housing2is provided with a second elastic sheet4by integral injection molding, and the second elastic sheet4is provided with a bonding pad40. One end of the second elastic sheet4is welded and fixed with the voice coil lead61by the bonding pad40(generally by spot welding), while the other end thereof is exposed outside the side wall of the second housing2. Specifically, the first elastic sheet3comprises a first connecting end31and a first exposed end32, wherein the first connecting end31is welded with the spring5and the part exposed outside the side wall of the first housing1is the first exposed end32. Similarly, the second elastic sheet4specifically comprises a second connecting end41and a second exposed end42, wherein the second connecting end41is fixed with the voice coil lead61by spot welding and the part exposed outside the side wall of the second housing2is the second exposed end42.

As mentioned above, according to the receiver of the present utility model, the electrical connecting structure comprises the first elastic sheet3, the second elastic sheet4and the spring5communicated with the external circuit. In order to connect an internal circuit to the external circuit, it is necessary to electrically connect the first elastic sheet3to the second elastic sheet4. While in the present embodiment, the first elastic sheet3and the second elastic sheet4are connected by a wire bonding process, that is, the first exposed end32of the first elastic sheet3is provided with a bonding wire320, the second exposed end42of the second elastic sheets4is welded and connected to the first exposed end32of the first elastic sheet3by the bonding wire320, such that the electrical connection between the first elastic sheet3and the second elastic sheet4is realized, and the connection between the internal circuit and the external circuit is realized. In this way, a current signal of the external circuit can be transmitted to the first elastic sheet3and the second elastic sheet4in sequence by the spring5, and finally reaches the voice coil6fixed with the second elastic sheet4by spot welding. After the voice coil6receives the current signal, under the action of an electromagnetic field, the voice coil6performs motion of cutting magnetic lines of force in a reciprocating manner, and the vibration diaphragm7is further driven to vibrate to radiate sound waves to the outside, thereby finishing conversion from electrical energy to acoustic energy.

Embodiment II

The present embodiment is basically same as the embodiment I, and differs from the embodiment I in the following.

Referring toFIG. 3, in the present embodiment, the connecting manner between the first elastic sheet3and the second elastic sheet4is different from that of the embodiment I. Specifically, the first exposed end32of the first elastic sheet3and the second exposed end42of the second elastic sheet4horizontally extend to the outer sides of the side walls of the first housing1and the second housing2respectively. Further, the first exposed end32is bent to a direction of the second housing4, and is stuck to the side wall of the first housing3. Correspondingly, the second exposed end42is bent to a direction of the first housing3and may overlap with the first exposed end32. The first exposed end32and the second exposed end42are fixed by laser welding and are connected.

In the present technical solution, since the vibration diaphragm7is fixed on the second housing2, that is, the vibration system is contained in the cavity of the second housing2, while the spring5is combined on the first housing1, that is to say, in the present technical solution, the spring5moves to be above the vibration system, i.e., a vertical position, from an existing transverse position. The phenomenon in the prior art that the limitation requirement on a transverse size cannot be met due to the arrangement of a transverse space of the spring can be avoided. Meanwhile, such structural design does not reduce the size of the vibration system, and thus cannot affect the overall acoustic performance of the product.

Preferably, in order to facilitate assembling, the first elastic sheet3and the second elastic sheet4are disposed on the side walls at the same end of the first housing1and the second housing2.

Preferably, the receiver of the present utility model further comprises a hearing aid voice coil14.

It needs to be noted that the above embodiments merely show the receiver of a single magnetic path structure. In fact, the implementation of the present technical solution is not limited to the product of such a magnetic path structure, may also be suitable for the receiver of other magnetic path structures comprising two side magnets or four side magnets, and is not limited thereto.

The above is merely implementing solutions of the present utility model, and is not used for limiting the present utility model, and equivalent modifications or changes made by those ordinary skilled in the art according to the content disclosed in the present utility model should belong to a protective scope recorded in the claims.