JP2018064217A - Portable terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate thickness reduction of a portable terminal having a rear air chamber of a sound transducer.SOLUTION: A portable terminal (1) includes: an acoustic component (3) disposed at a housing (2); a rear surface lid body (4) which is disposed so as to cover a rear surface of the acoustic component (3); a rib (6) forming a rear air chamber (5) of the acoustic component (3) with the rear surface lid body (4); and a circuit board 7 which is disposed at the opposite side of the acoustic component (3) with respect to the rib (6) and supplies an electric signal to the acoustic component (3).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a portable terminal that forms a rear air chamber maintained at a constant volume on the back side of an acoustic transducer such as a speaker or a receiver.

  In a portable terminal, in order to appropriately exhibit the acoustic effect, a configuration in which a sealed space that is a rear air chamber maintained at a constant volume is formed on the back side of an acoustic transducer such as a speaker or a receiver is known as a conventional technique. (Patent Document 1).

  The portable terminal described in Patent Literature 1 includes a front housing. An elliptical rib is formed on the front case. A circuit board is provided on the end face side of the rib. A cushion component is provided between the circuit board and the rib. A receiver is provided on the front housing side of the circuit board. A rear air chamber of the receiver is formed by the circuit board, the rib, the cushion component, and the front case.

JP 2003-143677 A (published May 16, 2003)

  However, in the conventional technique as described above, a receiver and a circuit board are stacked in the thickness direction of the mobile terminal in order to form a rear air chamber. For this reason, there exists a problem that formation of a back air chamber becomes an obstacle of thickness reduction of a portable terminal.

  An object of one embodiment of the present invention is to facilitate the thinning of a portable terminal having a rear chamber of an acoustic transducer.

  In order to solve the above-described problem, a mobile terminal according to an aspect of the present invention covers an acoustic transducer disposed in a housing for converting an electrical signal into sound and a rear surface of the acoustic transducer. A rear cover disposed in the casing; a rib formed on the casing to form a rear air chamber of the acoustic converter together with the rear cover; and the acoustic transducer with respect to the rib; And a circuit board that is disposed on the opposite side and supplies the electrical signal to the acoustic transducer.

  According to one aspect of the present invention, it is possible to easily reduce the thickness of a portable terminal having a rear chamber of an acoustic transducer.

It is a disassembled perspective view of the portable terminal which concerns on embodiment. (A) is the partial rear view which looked at the said portable terminal from which the rear cover body and the adhesive member were removed from the rear surface side, (b) is the fragmentary sectional view of the said portable terminal. It is a perspective view which shows the attachment state of the acoustic component provided in the said portable terminal. It is a perspective view for demonstrating the housing | casing and elastic member which were provided in the said portable terminal. It is a figure which shows the structure of the said elastic member and wiring material.

  Hereinafter, embodiments of the present invention will be described in detail.

Embodiment 1
FIG. 1 is an exploded perspective view of a mobile terminal 1 according to the embodiment. FIG. 2A is a partial rear view of the mobile terminal 1 viewed from the rear side with the rear cover 4 and the adhesive member 15 removed, and FIG. 2B is a partial cross-sectional view of the mobile terminal 1.

  The mobile terminal 1 includes a substantially flat housing 2. A display unit 14 is provided on the front side of the housing 2. A front lid 12 is attached to the front side of the housing 2 so as to cover the display unit 14.

  An acoustic component 3 (acoustic transducer) that converts an electrical signal into sound is disposed on the rear surface side of the housing 2. On the front side of the acoustic component 3, a sound path 13 for passing sound output from the acoustic component 3 is formed in the front lid 12 and the housing 2.

  A rear cover 4 is disposed on the rear surface of the housing 2 so as to cover the rear surface of the acoustic component 3. An adhesive member 15 is provided between the rear cover 4 and the housing 2.

  FIG. 3 is a perspective view showing an attachment state of the acoustic component 3 provided in the portable terminal 1. A rib 6 that forms the rear chamber 5 of the acoustic component 3 together with the rear cover 4 is formed around the acoustic component 3 of the housing 2. The rear air chamber 5 has a sealed structure by the rib 6, the rear cover body 4, the housing 2, the elastic member 10, and the adhesive member 15.

  As shown in FIGS. 1 and 2, a circuit board 7 that supplies an electrical signal to the acoustic component 3 is provided in the housing 2. The circuit board 7 is disposed on the opposite side of the acoustic component 3 with respect to the rib 6. Thus, the circuit board 7 and the acoustic component 3 are arranged with the rib 6 of the housing 2 interposed therebetween. Therefore, the circuit board 7 is provided at a position where the circuit board 7 is not stacked with the acoustic component 3 in the thickness direction of the mobile terminal 1. Thus, the circuit board 7 is placed separately from the rear air chamber 5. The rear air chamber 5 includes the rear cover body 4, the rib 6, and the housing 2. As a result, the portable terminal 1 having the rear chamber 5 of the acoustic component 3 can be thinned by the thickness of the circuit board 7.

  FIG. 4 is a perspective view for explaining the housing 2 and the elastic member 10 provided in the mobile terminal 1. FIG. 5 is a diagram showing the configuration of the elastic member 10 and the wiring member 9.

  The acoustic component 3 is connected to the circuit board 7 (FIGS. 1 and 2) by a pair of wiring members 9. A notch 8 is formed in the rib 6 for allowing the pair of wiring members 9 to pass therethrough. A rectangular parallelepiped elastic member 10 disposed at a position for closing the notch 8 is provided in the housing 2. A pair of slits 11 for passing the pair of wiring members 9 is formed in the elastic member 10. In this way, a part of the rib 6 for constituting the rear air chamber 5 is cut out to form a passage for the wiring member 9, and the cutout 8 is closed by the elastic member 10 provided with the slit 11 through which the wiring member 9 passes. To do.

  As shown in FIG. 5, the wiring member 9 is sandwiched between the slits 11 of the elastic member 10, and the gap between the wiring member 9 and the elastic member 10 is sealed by the elasticity of the elastic member 10.

  As shown in FIG. 3, the acoustic component 3 is attached at a position surrounded by the rib 6 of the housing 2. The notch 8 of the rib 6 for constituting the rear air chamber 5 is closed by the elastic member 10. Then, the wiring member 9 is guided from the circuit board 7 to the acoustic component 3 through the slit 11 of the elastic member 10. As described above, since the wiring member 9 is simply sandwiched between the slits 11 of the elastic member 10, the configuration of the wiring member 9 is simplified, and the workability of the line processing is improved.

  The rear cover 4 is bonded and fixed to the housing 2 by an adhesive member 15 such as a double-sided tape, and seals the rear air chamber 5.

  As described above, according to the first embodiment, the rear cover 4 and the rear air chamber 5 of the acoustic component 3 together with the rear cover 4 are arranged on the opposite side of the acoustic component 3 with respect to the rib 6 formed on the housing 2. A circuit board 7 for supplying an electrical signal to the acoustic component 3 is provided. For this reason, the sealed rear air chamber 5 can be separated from the circuit board 7. Therefore, the acoustic component 3 and the circuit board 7 are not stacked. As a result, the mobile terminal 1 having the rear chamber 5 of the acoustic component 3 can be easily reduced in thickness.

[Summary]
The portable terminal 1 according to the first aspect of the present invention includes an acoustic transducer (acoustic component 3) disposed in a housing 2 for converting an electrical signal into sound, and a rear surface of the acoustic transducer (acoustic component 3). A rear cover 4 disposed in the casing 2 so as to cover the rear cover 4 and the rear cover 4 are formed in the casing 2 so as to constitute a rear chamber 5 of the acoustic transducer (acoustic component 3). A rib 6 and a circuit board 7 disposed on the opposite side of the rib 6 from the acoustic transducer (acoustic component 3) and supplying the electrical signal to the acoustic transducer (acoustic component 3). .

  According to said structure, it arrange | positions on the opposite side to an acoustic transducer with respect to the rib formed in the housing | casing so that the back air chamber of an acoustic transducer may be comprised with a rear surface cover body, and an electrical signal is sent to an acoustic transducer. A circuit board to be supplied is provided. For this reason, the sealed rear air chamber can be separated from the circuit board. Therefore, the acoustic transducer and the circuit board are not stacked. As a result, it is easy to reduce the thickness of the portable terminal having the rear chamber of the acoustic transducer.

  The portable terminal 1 which concerns on the aspect 2 of this invention may further be provided with the wiring material 9 connected to the said acoustic transducer (acoustic component 3) and the said circuit board 7 in the said aspect 1. FIG.

  According to said structure, an electrical signal can be supplied with a simple structure from a circuit board to an acoustic transducer.

  In the portable terminal 1 according to the third aspect of the present invention, in the second aspect, the notch 8 through which the wiring material 9 is passed may be formed in the rib 6.

  According to the above configuration, the notch of the rib for passing the wiring material allows the circuit board disposed on the opposite side of the rib to the rib to be easily connected to the acoustic transducer by the wiring material. it can.

  The mobile terminal 1 according to the aspect 4 of the present invention further includes the elastic member 10 that closes the notch 8 in the aspect 3, and the elastic member 10 is formed with the slit 11 for allowing the wiring material 9 to pass therethrough. Good.

  According to the above configuration, the gap between the wiring member in the slit of the elastic member and the elastic member is sealed by the elasticity of the elastic member, so that the notch through which the wiring member passes can be effectively blocked by the elastic member. Can do.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

DESCRIPTION OF SYMBOLS 1 Mobile terminal 2 Case 3 Acoustic component (acoustic transducer)
4 Rear cover body 5 Rear air chamber 6 Rib 7 Circuit board 8 Notch 9 Wiring material 10 Elastic member 11 Slit 12 Front cover body 13 Sound path 14 Display unit 15 Adhesive member

Claims (4)

An acoustic transducer disposed in the housing for converting electrical signals into sound;
A rear lid disposed on the housing to cover the rear surface of the acoustic transducer;
A rib formed on the housing so as to constitute a rear air chamber of the acoustic transducer together with the rear cover;
A portable terminal comprising: a circuit board disposed on the opposite side of the rib from the acoustic transducer and supplying the electrical signal to the acoustic transducer.   The mobile terminal according to claim 1, further comprising a wiring member connected to the acoustic transducer and the circuit board.   The portable terminal according to claim 2, wherein a notch for passing the wiring material is formed in the rib. An elastic member for closing the notch;
The portable terminal according to claim 3, wherein a slit for passing the wiring member is formed in the elastic member.

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