JP3307738B2 - Electronic device housing structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a housing structure of a small electronic device such as a pager, and more particularly, to a terminal provided for writing data to a ROM inside the housing after the product is completed, and a static electricity to a test terminal. The present invention relates to a housing structure of an electronic device capable of preventing the intrusion of an electronic device.

[0002]

2. Description of the Related Art RO used for a pager manufactured to order
The data stored in the M (Read Only Memory) is often input when the assembly of the pager is completed and the area to be finally used is determined, and the input operation is performed immediately before shipment. . That is, in the case of a communication device or an electronic device such as a pager, a program including a call number, a call frame timing, and other data of a customer who has decided to purchase and use the device after completion of the product and before shipment. Need to be written to the ROM on the printed circuit board inside the housing, the RO
By inserting and connecting the probe connected to the M writer, the data can be written. In addition, test terminals are arranged on the printed circuit board inside the housing to test various performances of the pager,
Various performance tests are performed by connecting a test needle or the like to the test terminal.

FIGS. 4 (a) and 4 (b) are an external perspective view and a sectional view showing the structure of a probe insertion portion in a conventional pager. A probe insertion hole 2 is formed in a side wall of a housing 1 of the pager. At the same time, a signal transmission / reception terminal 4 is protruded from an edge of the printed circuit board 3 in the housing at a position facing each hole 2,
The probe 5 can be connected to the probe connector 6 at the tip of the probe 5 inserted through the hole 2. Further, as a conventional test terminal arrangement structure, there is a structure in which the test terminal is exposed inside a battery storage recess provided in a part of a housing,
The above performance is tested by bringing a test needle or the like into contact with the test terminal exposed when the lid for closing the recess is opened.

However, since the signal transmission / reception terminal 4 as described above is close to the outside through the hole 2 provided in the housing side wall, external static electricity, for example, static electricity generated on clothes or fingertips of an operator through a space. However, there is an accident that the ROM enters the ROM circuit on the board and damages the ROM on the printed board. Regarding the test terminals, the accident that the static electricity invading from between the housing and the lid frequently damages the circuit element on the board that invades the test terminals occurs.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and has a terminal located immediately inside a hole formed in a housing,
It is an object of the present invention to provide a housing structure of an electronic device capable of preventing the destruction of a circuit element on a substrate due to the intrusion of static electricity from the outside into a test terminal or the like exposed in a battery storage recess.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is an electronic device comprising a printed circuit board having terminals connected to mounted components, and a housing containing the printed circuit board.
A hollow cylindrical insertion guide portion extending to a position immediately adjacent to the terminal is protruded from an inner wall of the housing facing the terminal, and the insertion guide portion has a hollow body having a hollow portion for inserting a probe or the like. The insertion guide portion has an inner end face facing the terminal and a small-diameter opening for connecting the terminal to a tip of a probe or the like. And

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. 1 and 2 are a perspective view and an AA cross-sectional view showing the entire configuration of a housing structure to which the present invention is applied, and FIGS. 3 (a) and 3 (b) are a perspective view and a plan view of a main part. A housing of an electronic device such as a pager includes a housing body 10 and
A battery cover 12 for opening and closing the battery housing 11 of the housing body; a printed circuit board 15 is disposed inside the side wall 13 of the battery housing 11; The mounted components are mounted. A signal transmission / reception terminal 17 is formed on the upper surface of the edge of the printed circuit board 15, and a hollow cylindrical insertion guide portion 18 as shown in FIG.
It is projected toward. This insertion guide portion 18
A large-diameter portion (probe insertion port) 18a for receiving the probe main body (probe connector housing) 19 connected to the OM writer, and a probe connector 19a at the tip of the probe.
And a small-diameter opening 20 on the lower end surface (inner end surface) for connecting the terminal 17 to the terminal 17. The lower end surface of the insertion guide portion 18 is dimensioned so as to face the terminal 17 as shown in the figure, and the positional relationship is set such that the terminal 17 is located inside the small diameter opening 20.

[0008] The probe 19 is inserted in a vertical position from a vertical hole-shaped probe insertion port 18 a opened by removing the battery cover 12, so that the probe connector 19 a at the distal end is connected to the terminal 1 located immediately below the small-diameter opening 20.
7 for writing to the ROM.

The probe insertion port 18a is provided in the battery storage recess 1
While the battery 1 is closed when the battery 1 is closed by the battery cover 12, the distance between the upper end of the insertion port 18a and the terminal 17 is sufficiently long, so that the possibility that static electricity enters the terminal 17 from the outside is reduced. Further, the lower end surface of the guide portion 18 is
Since it is disposed close to the upper side, even if dust enters the guide portion from the insertion opening 18a, there is no possibility that the dust spreads on the substrate and causes harm.

[0010] In the above embodiment, the RO
Although the case structure in which writing is performed on M is shown, the above configuration can be similarly applied to the case structure of an electronic device having a test terminal. Further, the present invention is also applicable to a housing of an electronic device having no battery housing, and in this case, among the walls of the housing, the inner wall of the wall facing the terminal on the built-in printed board is used. The insertion guide portion may be provided so as to protrude therefrom so that a probe or the like can be inserted into the space of the insertion guide portion, and the entrance of the insertion guide portion may be covered.

[0011]

As described above, in one embodiment of the present invention, a hollow cylindrical guide portion extending from the housing ceiling is provided on the inside of the housing of the side plate separating the battery housing portion and the inside of the housing main body. Since a signal transmitting / receiving terminal or a test terminal is disposed immediately below the small-diameter opening on the lower end surface of the guide portion, and the opening of the guide portion is closed by an electronic cover, static electricity is generated. Can be prevented from invading the terminal, and destruction of each element on the substrate can be prevented. In addition, even in the case of a type of electronic device that does not have a battery storage section, the insertion guide section protrudes from the housing wall surface facing the terminal on the board, and the opening of the guide section is closed with a lid. By doing so, a similar effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the entire configuration of a housing structure to which the present invention is applied.

FIG. 2 is a sectional view taken along line AA of FIG.

FIGS. 3 (a) and 3 (b) are a perspective view and a plan view of a main part of the embodiment of FIG.

4 (a) and 4 (b) are an external perspective view and a sectional view showing a structure of a probe insertion portion in a conventional pager.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Case main body, 11 Battery storage part, 12 Battery cover, 13 Side wall, 15 Printed circuit board, 16 ROM,
17 signal transmission / reception terminal, 18 insertion guide portion, 19 probe body (probe connector housing), 19a probe connector, 20 small diameter opening.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04B ^7/ 24-7/26 113 H04Q ^7/ 00-7/38

Claims (1)

(57) [Claims] 1. An electronic apparatus comprising: a printed circuit board having a terminal connected to a mounting component; and a housing incorporating the printed circuit board, wherein an inner wall of the housing facing the terminal has the terminal. hollow cylindrical insertion guide portion extending to the nearest position is protruded, the insertion guide portion is a hollow body having a hollow portion for inserting a probe or the like, the inside of the insertion guide portion
With the end face facing in close proximity to the terminal, the said inner end face <br/> of the electronic device, wherein the small diameter opening for connecting a front end portion such as the terminal and the probe are formed Housing structure.