JP2013058941A - Electronic apparatus and attachment component unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain the waterproof performance in a portion of an attachment component unit and achieve the downsizing of the attachment component unit.SOLUTION: An electronic apparatus 1 comprises a fingerprint sensor unit 2 serving as one example of an attachment component unit. The fingerprint sensor unit 2 has a flexible cable 4 connecting a fingerprint sensor 3 serving as one example of an attachment component with a circuit board 14 included in a housing 5 of the electronic apparatus 1; and a frame 6 for fixing the fingerprint sensor 3 to the housing 5. The flexible cable 4 is integrally molded with the frame 6 while penetrating through the frame 6, and the flexible cable 4 contacts with the frame 6 without causing gaps therebetween. The frame 6 has a reinforcement sheet metal 7 serving as one example of a reinforcement member reinforcing the frame 6 and is fixed to the housing 5 through a water stop member 8 serving as one example of a sealing member.

Description

  The present invention relates to an electronic device and a mounting part unit.

  Conventionally, the frame O-ring seals between the fixed rear case and the fingerprint sensor frame, and the flexible substrate O-ring seals between the grommet part and the fingerprint sensor frame in the through hole for the wiring part. There is an electronic apparatus having a configuration (see, for example, Patent Document 1).

JP 2010-74439 A

  However, in the conventional electronic device, the waterproof structure of the flexible substrate portion has a double structure in which the flexible substrate and the grommet are integrally formed, and the grommet and the fingerprint sensor frame are sealed with an O-ring for the flexible substrate. ing. Therefore, there is a problem that the fingerprint sensor unit is increased in size.

  Thus, it is conceivable to reduce the size of the fingerprint sensor unit by integrally molding the flexible substrate and the fingerprint sensor frame. However, since the fingerprint sensor attached to the flexible substrate is vulnerable to heat, it is necessary to integrally mold the flexible substrate and the fingerprint sensor frame at a low temperature. Resins that can be molded at low temperatures may have the property of being highly temperature dependent and tending to become soft and deform at high temperatures.

  Therefore, when a fingerprint sensor frame is manufactured using a resin that can be molded at a low temperature, the fingerprint sensor frame may be deformed at a high temperature. If the fingerprint sensor frame is deformed, a new problem arises that the waterproof performance of the fingerprint sensor unit cannot be maintained. Such a problem is not limited to the fingerprint sensor, and similarly occurs in various sensor devices such as a temperature sensor attached to an electronic device and attachment parts such as a barcode reader.

  The present invention has been created in view of the above problems, and a first object is to provide an electronic device and a mounting component unit that can maintain the waterproof performance of the mounting component unit portion. A second object is to provide an electronic device and a mounting component unit that can realize a reduction in size of the mounting component unit.

  The electronic device includes an attachment part unit. The mounting component unit includes a flexible cable that connects the mounting component and a circuit board provided in the housing of the electronic device, and a frame for fixing the mounting component to the housing. The flexible cable is integrally formed with the frame penetrating the flexible cable, and the flexible cable and the frame are in contact with each other without a gap. The frame has a reinforcing material that reinforces the frame, and is fixed to the housing via a sealing member.

  According to the electronic device and the attachment component unit, the waterproof performance of the attachment component unit portion can be maintained. Moreover, there exists an effect that size reduction of an attachment component unit is realizable.

FIG. 1 is a cross-sectional view illustrating the main part of the electronic apparatus according to the first embodiment. FIG. 2 is a perspective view of the fingerprint sensor unit and the water stop member of the electronic apparatus according to the first embodiment. FIG. 3 is a front perspective view illustrating the electronic apparatus according to the second embodiment. FIG. 4 is a rear perspective view of the electronic apparatus according to the second embodiment. FIG. 5 is an exploded perspective view illustrating the electronic apparatus according to the second embodiment. FIG. 6 is a front perspective view illustrating the fingerprint sensor unit of the electronic apparatus according to the second embodiment. FIG. 7 is a rear perspective view illustrating the fingerprint sensor unit of the electronic apparatus according to the second embodiment. FIG. 8 is an exploded perspective view illustrating the fingerprint sensor unit of the electronic apparatus according to the second embodiment. FIG. 9 is a perspective view of the reinforcing sheet metal of the electronic device according to the second embodiment.

  Exemplary embodiments of the electronic device and the mounting part unit will be described below in detail with reference to the accompanying drawings. In the following description of each embodiment, the same components are denoted by the same reference numerals, and redundant descriptions are omitted. In each of the following embodiments, a fingerprint sensor is used as an example of an attachment part attached to an electronic device. However, the attachment part targeted by the present application is not limited to a fingerprint sensor, and a temperature sensor attached to an electronic device. It may be an attachment component such as various sensor devices or a barcode reader.

Example 1
FIG. 1 is a cross-sectional view illustrating the main part of the electronic apparatus according to the first embodiment. FIG. 2 is a perspective view illustrating a fingerprint sensor unit (mounting part unit) and a water stop member (sealing member) of the electronic apparatus according to the first embodiment.

  As shown in FIGS. 1 and 2, the electronic device 1 includes a fingerprint sensor unit 2 as an example of an attachment part unit. The fingerprint sensor unit 2 fixes the fingerprint sensor 3 to the casing 5 and the flexible cable 4 that connects the fingerprint sensor 3 as an example of an attachment part and the circuit board 14 provided in the casing 5 of the electronic device 1. And a frame 6 for the purpose.

  The flexible cable 4 is integrally formed with the frame 6 being penetrated, and the flexible cable 4 and the frame 6 are in contact with each other with no gap. The frame 6 has a reinforcing sheet metal 7 as an example of a reinforcing material that reinforces the frame 6, and is fixed to the housing 5 via a water stop member 8 as an example of a sealing member.

  According to Example 1, the flexible cable 4 and the frame 6 can be integrally molded by using a resin that can be molded at a low temperature as the resin for producing the frame 6. Accordingly, since it is not necessary to provide the grommet and the O-ring that seals the grommet and the frame, the fingerprint sensor unit can be downsized. Further, since the reinforcing sheet metal 7 is provided inside the frame 6, the deformation of the frame 6 can be prevented even at a temperature at which the frame 6 is deformed without the reinforcing sheet metal 7. Therefore, the waterproof performance of the fingerprint sensor unit can be maintained.

(Example 2)
Description of Electronic Device FIG. 3 is a front perspective view illustrating the electronic device according to the second embodiment. FIG. 4 is a rear perspective view of the electronic apparatus according to the second embodiment. FIG. 5 is an exploded perspective view illustrating the electronic apparatus according to the second embodiment.

  As shown in FIGS. 3 to 5, the electronic device 1 may be a mobile phone, for example. In the mobile phone of the illustrated example, a movable part 11 on the front side and a fixed part 12 on the back side are attached by a hinge part 13 so as to be opened and closed. The movable part 11 may be provided with a display panel, for example. The fixed portion 12 may be provided with a keypad, for example, or may contain a battery. The fingerprint sensor unit 2 may be attached to the housing 5 of the fixed portion 12.

  In the mobile phone shown in FIG. 1, reference numeral 21 denotes a mounting board. Various components (not shown) may be mounted on the mounting substrate 21. Reference numeral 22 denotes a shield plate. The shield plate 22 shields noise generated by various components (not shown) mounted on the mounting substrate 21. Reference numeral 23 denotes a mounting substrate. An operation button 24 may be mounted on the mounting board 23.

  Reference numeral 25 denotes a display panel. The display panel 25 protects the display module 26. Reference numeral 28 denotes a mounting board. The display module 26 may be mounted on the mounting substrate 28. Reference numeral 27 denotes a shield plate. The shield plate 27 shields noise generated by various components (not shown) mounted on the mounting board 28. Reference numeral 29 denotes a back panel of the movable part 11.

Description of Fingerprint Sensor Unit FIG. 6 is a front perspective view showing the fingerprint sensor unit of the electronic apparatus according to the second embodiment. FIG. 7 is a rear perspective view illustrating the fingerprint sensor unit of the electronic apparatus according to the second embodiment. However, FIGS. 6 and 7 show a state before the fingerprint sensor 3 is attached to the frame 6 (the same applies to FIG. 8).

  As shown in FIGS. 6 and 7, the flexible cable 4 penetrates the frame 6 up and down. The flexible cable 4 and the frame 6 are integrally formed. Thereby, the flexible cable 4 is in contact with the frame 6 without a gap. A double-sided adhesive tape 9 is affixed to the upper surface of the frame 6.

  The fingerprint sensor 3 is attached to a tip portion of the flexible cable 4 that protrudes above the frame 6. The fingerprint sensor 3 is attached to the double-sided adhesive tape 9 by bending the flexible cable 4 on the frame 6. The distal end portion of the flexible cable 4 that protrudes to the lower side of the frame 6 is inserted into a connector 15 provided on the circuit board 14 that is covered by the housing 5 on the back side by being bent under the frame 6. (See FIGS. 1 and 5). That is, the fingerprint sensor unit 2 is connected to the circuit board 14.

  The frame 6 is made of a low temperature molding resin. Examples of the low-temperature molding resin include thermoplastic polyamide resins such as Telmelt-194B manufactured by Toagosei Co., Ltd., silicon rubber, and elastomer. By using the low-temperature molding resin, the flexible cable 4 to which the fingerprint sensor 3 is attached and the frame 6 can be integrally molded at a low temperature without damaging the heat-sensitive fingerprint sensor 3.

  FIG. 8 is an exploded perspective view illustrating the fingerprint sensor unit of the electronic apparatus according to the second embodiment. FIG. 9 is a perspective view of the reinforcing sheet metal (reinforcing material) of the electronic apparatus according to the second embodiment. FIG. 8 shows a state where the reinforcing sheet metal 7 is clearly shown by removing the portion of the frame 6 that covers the reinforcing sheet metal 7.

  As shown in FIGS. 8 and 9, a reinforcing sheet metal 7 is integrally formed on the frame 6. The reinforcing sheet metal 7 may be made of metal or ceramic as long as the deformation of the frame 6 can be prevented. Further, the reinforcing sheet metal 7 may have substantially the same shape as the planar shape of the frame 6, or may have other shapes as long as the deformation of the frame 6 can be prevented.

  The reinforcing sheet metal 7 may be embedded in the frame 6. When the reinforcing sheet metal 7 is embedded in the frame 6, the double-sided adhesive tape 9 may be attached to the upper surface of the frame 6. Alternatively, the peripheral edge portion of the reinforcing sheet metal 7 may be embedded in the frame 6, and the central portion of the reinforcing sheet metal 7 may not be embedded in the frame 6. When the central portion of the reinforcing sheet metal 7 is exposed, the double-sided adhesive tape 9 may be attached to the exposed surface of the reinforcing sheet metal 7.

-Description of waterproof structure As shown in FIG. 2, the water stop member 8 is an O-ring made of a material having elasticity such as rubber. The water stop member 8 is attached to the outer periphery of the frame 6. As shown in FIG. 1, the water stop member 8 seals between the frame 6 and the protrusion 16 of the housing 5 that faces the frame 6. As described above, since the flexible cable 4 is in contact with the frame 6 without a gap, it is possible to prevent water, dust, and the like from entering the fixed portion 12 of the mobile phone from the fingerprint sensor unit portion.

  According to the second embodiment, the same effect as the first embodiment can be obtained. Further, since it is not necessary to provide the grommet and the O-ring for sealing the grommet and the frame, the number of parts of the fingerprint sensor unit 2 can be reduced, and the cost can be reduced.

  The attachment component is not limited to the fingerprint sensor, and may be an attachment component such as various sensor devices such as a temperature sensor attached to an electronic device or a barcode reader. Further, the electronic device 1 is not limited to a mobile phone, but includes an electronic device having a function as a mobile phone and a mobile phone called a so-called smartphone equipped with a mounting part such as a fingerprint sensor, or a computer or PDA (Personal Digital Assistants). It may be a portable information terminal such as, or various measuring devices. Further, in addition to the waterproof structure of the fingerprint sensor unit portion, the present invention can be applied to a waterproof structure where a waterproof performance is required.

DESCRIPTION OF SYMBOLS 1 Electronic device 2 Mounting component unit 3 Mounting component 4 Flexible cable 5 Case 6 Frame 7 Reinforcement material 8 Sealing member 14 Circuit board

Claims (3)

An electronic device comprising a mounting part unit,
The mounting part unit is
A flexible cable for connecting the mounting component and a circuit board provided in the housing of the electronic device, and a frame for fixing the mounting component to the housing;
The flexible cable is integrally formed with the frame penetrating the flexible cable, and the flexible cable and the frame are in contact with each other without a gap,
The frame is
Having a reinforcement to reinforce the frame,
An electronic apparatus, wherein the electronic apparatus is fixed to the housing via a sealing member.   The electronic device according to claim 1, wherein the frame is made of a low temperature molding resin. Mounting parts to be attached to the housing of the electronic device;
A flexible cable for connecting the mounting component and a circuit board provided in the housing;
A frame for fixing the mounting part to the housing;
The flexible cable is integrally formed with the frame penetrating the flexible cable, and the flexible cable and the frame are in contact with each other without a gap,
The frame is
Having a reinforcement to reinforce the frame,
An attachment component unit, which is fixed to the housing via a sealing member.

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