JP3023337U - Electronic device housing structure - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To prevent damage to a substrate in a housing and dropping or damage of electronic components even when a drop impact or the like is applied to an electronic device. An electronic device including an upper casing (1) and a lower casing (2) in which a substrate (B) mounting a heavy component (P), which is an electronic component, is provided, and the substrate (B) is fixed in the lower casing (2). Are provided with four convex portions 3, 4, 5 and 6, and U-shaped slits 7 and 8 are formed around the two convex portions 3 and 4 in the inside, respectively. When the lower housing 2 is fitted therein, the heavy component P mounted on the board B fixed to the convex portions 3, 4, 5, 6 is provided with a predetermined space S so as to project. A protective wall 9 is provided.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a housing structure of an electronic device, and more particularly to a housing structure of an electronic device when a substrate on which heavy parts such as a power transformer are mounted is fixed in the housing.

[0002]

[Prior art]

 As shown in FIGS. 5A and 5B, a heavy component receiver 51 for fixing a substrate B on which a heavy component P such as a power transformer is mounted is provided in a housing of an electronic device such as a telephone and an intercom. It is provided. The heavy component receiver 51 surrounds the heavy component P, and fixes the board B on which the heavy component P is mounted with screws or the like. Such a heavy component receiver 51 is provided in the upper housing 50, and the board B on which the heavy component P is mounted is fixed to the heavy component receiver 51 of the upper housing 50 with screws or the like and fitted into the lower housing 52. When combined, the board B on which the heavy component P is mounted is suspended from the heavy component receiver 51.

Further, in order to fix the board B on which the heavy component P such as a power transformer is mounted in the housing, a heavy component stopper 60 is used as shown in FIGS. 6A and 6B. There is. The heavy-duty fastener 60 is bent along the shape of the heavy-duty component P and is fixed to the bosses 62a and 62b projecting inside the lower housing 62 via the board B with screws or the like. In this state, the upper housing 61 is fitted in the lower housing 62.

[0004]

[Problems to be solved by the device]

 However, in fixing the substrate B by the heavy component receiver 51 and the heavy component fastener 60 as described above, the substrate B on which the heavy component P is mounted is not flexibly fixed, so that drop impact during transportation or use may occur. As a result, the screw hole portion b of the board B may be cracked (FIG. 7), or the heavy component P mounted on the board B may be damaged or fallen off (FIG. 8).

The present invention has been made in order to solve the above-mentioned conventional problems, and prevents damage to the board in the housing and dropping or damage of electronic components even when a drop impact is applied to the electronic device. An object of the present invention is to provide a housing structure of an electronic device that can be used.

[0006]

[Means for Solving the Problems]

 The electronic device casing structure of the present invention that achieves such an object is an electronic device including an upper casing and a lower casing in which a board on which electronic components are mounted is provided. A plurality of bosses to which the substrate is fixed are provided, U-shaped slits are formed around at least one boss, and the substrate is fixed to the boss when the lower casing is fitted in the upper casing. The protective wall is provided so as to protrude from the electronic component mounted above with a predetermined gap.

[0007]

[Embodiment of device]

 An embodiment of a housing structure of an electronic device according to the present invention will be described below with reference to the drawings. As shown in FIGS. 1 (a) and 1 (b), a housing of an electronic device such as a telephone or an intercom is composed of an upper housing 1 and a lower housing 2. Inside the lower housing 2, a power transformer, etc. Four bosses 3, 4, 5 and 6 are provided to fix the board B on which the heavy component P, which is an electronic component, is mounted with screws or the like, and U are provided around the two bosses 3 and 4, respectively. V-shaped slits 7 and 8 are provided. The U-shaped slits 7 and 8 allow the bosses 3 and 4 to bend to some extent. The U-shaped slits 7 and 8 allow the bosses 3 and 4 to be bent to some extent because the lower housing 2 is made of a thermoplastic resin such as ABS resin.

In addition, the electronic component P mounted on the substrate B fixed to the bosses 3, 4, 5, 6 when the lower casing 2 is fitted in the upper casing 1 is predetermined. A protective wall 9 having a space S is provided so as to project. The protective wall 9 is formed with four protruding portions 9a capable of holding the upper four side surfaces of the heavy component P fixed to the lower housing 2 via the substrate B, and is provided at a predetermined position from the upper surface of the heavy component P. The ribs 9b are formed continuously between the protruding portions 9a with the spaces S. The length and width of the protective wall 9 are determined depending on the size of the heavy weight component P and the like. Further, as in the lower casing 2, the upper casing 1 is made of a thermoplastic resin such as ABS resin.

The board B on which the heavy component P is mounted is fixed to the bosses 3, 4, 5, 6 of the lower housing 2 with a screw or the like, and the board B on which the heavy component P is mounted is fixed to the boss 3. By fitting the upper casing 1 provided with the protective wall 9 to the casing 2, the base plate B on which the heavy component P is mounted is flexibly held between the lower casing 2 and the upper casing 1. When an impulsive load such as a drop is applied to an electronic device in which the heavy component P is incorporated in the housing, the bosses 3 and 4 having the U-shaped slits 7 and 8 are softened as shown in FIG. Since the weight component P itself is held by the four protruding portions 9a and the ribs 9b of the protective wall 9, the substrate B on which the weight component P is mounted is not directly subjected to an impact load such as a drop. As a result, it is possible to prevent breakage of the board B and dropout and breakage of the heavy weight component P.

In this embodiment, the U-shaped slits 7 and 8 are formed around the two bosses 3 and 4 of the four bosses 3, 4, 5 and 6, respectively. However, not limited to this, depending on the arrangement of the heavy component P on the substrate B, one of the four bosses 11, 12, 13, 14 provided on the lower housing 10 as shown in FIG. A U-shaped slit 15 may be formed around 12 and a U-shape may be formed around all four bosses 21, 22, 23, 24 provided on the lower housing 20 as shown in FIG. The slits 25, 26, 27 and 28 may be formed.

Further, the number of bosses of the lower housing for fixing the substrate on which heavy components such as a power transformer are mounted is not limited to four, and any number may be used.

[0012]

[Effect of device]

 As described above, according to the housing structure of the electronic device of the present invention, the electronic device includes the upper housing and the lower housing in which the board on which the electronic component is mounted is provided. There are multiple bosses to fix the board inside, and U-shaped slits are drilled around at least one boss, and fixed to the boss when the lower case is fitted in the upper case. The electronic components mounted on the printed circuit board have a protective wall that projects from the circuit board with a certain gap, so even if the electronic device is dropped or impacted, the circuit board inside the chassis will be damaged. It is possible to prevent the electronic parts from falling off and being damaged. Further, when fixing the board on which the electronic component is mounted in the housing, the heavy component fastener is not necessary.

[Brief description of drawings]

1A and 1B are views showing an embodiment of a housing structure of an electronic device according to the present invention, in which FIG. 1A is a sectional view and FIG. 1B is a perspective view of a lower housing.

FIG. 2 is an explanatory diagram when a shocking load such as a drop is applied to the housing of the electronic device shown in FIG.

FIG. 3 is an explanatory view showing another embodiment of the housing structure of the electronic device of the invention.

FIG. 4 is an explanatory view showing another embodiment of the housing structure of the electronic device of the invention.

FIG. 5 is a view showing a housing structure of a conventional electronic device, FIG.
Is a perspective view and (b) is a sectional view.

FIG. 6 is a diagram showing a housing structure of a conventional electronic device, FIG.
Is a perspective view and (b) is a sectional view.

FIG. 7 is an explanatory diagram showing an adverse effect of a conventional electronic device casing structure.

FIG. 8 is an explanatory diagram showing an adverse effect of a conventional electronic device casing structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Upper housing 2 ... Lower housing 3, 4, 5, 6 ... Boss 7, 8 ... U-shaped slit 9 ... Protective wall P ... Heavy component (electronic component) B ... Substrate S ... Void

Claims (1)

[Scope of utility model registration request] 1. An electronic device comprising an upper casing and a lower casing having a substrate on which electronic components are mounted, wherein a plurality of bosses for fixing the substrate are provided in the lower casing. A U-shaped slit is formed around one or more of the bosses, and the electrons mounted on the substrate are fixed to the bosses when the lower case is fitted in the upper case. A housing structure for an electronic device, wherein a protective wall is provided so as to project from a component with a predetermined gap.