JPH0722597U - Electronics - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an electronic device having a housing in which the memory card device unit can be attached to the front base with a small number of fastening members. [Structure] One of both main surfaces of a memory card header / ejector block 17 in which a card ejector block 17b and a card head block 17a are integrally connected.
The base plate 16 and the header / ejector block 17, which are positioned along one surface, are passed through the mounting holes 16k, 17k to the mounting portion 12h of the front base 12 serving as a reinforcing member by using a small number of two screws 24. Attach via the screw holes 12k.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electronic device, and more particularly, to a housing structure in consideration of the shielding property of the electronic device.

[0002]

[Prior art]

 As a housing structure of a conventional electronic device, a shield structure for preventing unnecessary radiation is usually adopted as a countermeasure for EMI.

FIG. 12 is a perspective view showing an external appearance of a housing of a stationary image recording / reproducing apparatus which is a conventional electronic device. The housing shown in this figure is composed of a front panel 101 and an exterior panel 102. The front panel 101 is formed of a plastic molded product or a metal molded product. A port 104 (for a memory card device unit, see FIG. 15 or 16), an eject button 104a of the card, an FD (floppy disk) insertion port 105, and the like are provided. The exterior panel 102 is generally made of metal and is attached to a main chassis (not shown).

As described above, since the exterior panel 102 is made of metal, there is no problem with the shield function. On the other hand, since various materials are applied to the front panel 101, it is necessary to consider its shield function.

[0005]

[Problems to be solved by the device]

 However, as for mounting the conventional memory card device unit to the front base, the number of mounting screws is large because the card substrate has a separate structure as shown in FIG. That is, as shown in the exploded perspective view of FIG. 15, the memory card header block 123a is fixed to the card substrate 122 with the two screws 127. In that state, solder by dipping. Then, the memory card ejector block 123b is joined to the header portion 123a. The memory card mounting unit in that state is fixed to the unit mounting plate 121 with two screws 128. In this way, the conventional unit was installed with a total of four screws.

The present invention has been made in consideration of such problems of the conventional mounting of the memory card device unit, and an object of the present invention is to provide an electronic device in which the mounting of the memory card device unit to the front base can be realized by a small number of fastening members. It is what

[0007]

[Means for Solving the Problems]

 The electronic device of the present invention has a guide part and an eject operation part of the memory card to be inserted from its own memory card insertion slot, and is developed so as to extend from the vicinity of the memory card insertion slot in the insertion direction of the memory card. Conductor part for electrical connection between a card ejector block, which is formed to have a thin three-dimensional shape with two main surfaces that are substantially parallel to each other, and a memory card loaded through the card ejector block. A card header block having a card ejector block and a mechanically connectable card header block that is positioned so as to be substantially accommodated in the space sandwiched between the extension portions of both main surfaces of the card ejector block and the card ejector block. Position the board for transferring signals to and from the loaded memory card along the main surface of the header ejector block along one of the two main surfaces. And place the plate-like strength member along the other of the two main surfaces, and attach the board, card header ejector block, and plate-like strength member in the above order with a small number of fastening members. It is an electronic device that is integrally fastened.

[0008]

[Action]

 The present invention locates a board for transmitting and receiving a signal to and from a memory card loaded along one of the two main surfaces with respect to a card header ejector block, and also has both main surfaces. By positioning the plate-shaped strength member along the other surface, the board, the card header ejector block, and the plate-shaped strength member are fastened together by a small number of fastening members.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 is an exploded perspective view of a housing of a stationary image recording / reproducing apparatus for an electronic device according to an embodiment of the present invention.

The above-mentioned configuration of the housing itself is attached to a main chassis (not shown) made of sheet metal, and is attached to the chassis via screws so as to cover an inner surface of the front frame 13, which will be described later, which is a predetermined inner surface. Front of a molded outer surface member having a front base 12 of a shield member made of a sheet metal and a front base 12 which is attached to the front base 12 with a screw and whose central portion has an opening shape and which is exposed to the outside of the housing. A frame 13, a front sheet 14 attached to the surface of the front frame 13, a switch element such as an operation switch mounted on the front base 12, and a printed circuit board 15 provided with a switch operation button. It is configured. The front card 12 has a memory card device unit, which will be described later, which is a card header ejector block, mounted on the bent portion 12h.

The front base 12 has a bent portion 12i around its periphery. Then, a plurality of folded portions are provided at positions along the bent portion 12i, and a screw hole 12b is provided therein. On the other hand, on the front frame 13, a plurality of bosses 13b are integrally arranged along the inside of the frame at positions facing the screw holes 12b. The exploded perspective view of FIG. 4 is a perspective view around the screw holes 12b and the boss 13b portion of the front base 12 and the front frame 13, and the screw holes 12b and the boss 13b are fixed to each other with screws to remove the front base. 12 and the front frame 13 are integrated. Then, as shown in FIG. 5, a front panel 19 having an integral structure is formed.

Since the front base 12 and the front frame 13 are integrated as described above, the mounting portion does not project outward from the front base 12 as shown in FIG. Therefore, since the thickness h of the frame portion of the front frame 13 only needs to satisfy the shape of hiding the end portion of the chassis 20, a relatively thin dimension can be adopted.

However, in the conventional frame mounting structure for the housing, as shown in the partial sectional view of FIG. 13A or 13B, the front bases 110 and 113 and the front frames 111 and 114 are separated from each other. The mounting portions C and D are arranged so as to project outside the front bases 110 and 113. Therefore, the frame portions of the front frames 111 and 114 require the above-mentioned mounting portions C and D in addition to the portions that overlap the ends of the chassis 112 and 115, and the thicknesses h ′ and h ″ of the frame portions are comparative. The front panel 19 of the above-described integrated structure of the apparatus of the present embodiment solves this point.

Further, in the housing of the apparatus of this embodiment, the mounting structure of the front base 12 and the front frame 13 is a structure that is joined and mounted in the direction A as shown in FIG. The bending accuracy of the front base 12 and the draft at the time of molding the front frame 13 do not affect the accuracy of the mounting position so much.

However, in the conventional frame mounting structure for the housing, the side mounting type has a bending accuracy of ± 1 ° of the front base 116 as shown in the partial sectional view of FIG. Since the draft of 117 at the time of molding had to be taken into consideration, its mounting position was not accurately determined. The housing of the apparatus of this embodiment described above also solves that point.

Further, in the housing of the apparatus of this embodiment, the front base 12 is provided with a plurality of metal bosses 12e. Then, the printed circuit board 15 is attached to the boss 12e through the screw hole 15e and is attached to the front base 12. In this mounted state, the operation switch button (not shown) provided on the printed circuit board 15 is exposed to the outside through the button holes 12f and 14f of the front base 12 and the front seat 14.

The mounting position of the front base 12 and the front frame 13 is determined by fitting the notch 12p of the front base 12 and the convex portion 13p of the front frame 13 which are arranged at the corner as shown in FIG. To be done. However, it is assumed that the cutout 12p and the convex portion 13p are provided in two sets facing each other on a diagonal line of the frame.

A power switch 21, a connector 22 and the like are attached to the front base 12, and a plurality of operation switch buttons are attached to the printed board 15. Further, a memory card device unit is mounted on the mounting portion 12h formed by bending the front base 12 as described later.

As described above, the front base 12, the front frame 13, and the printed board 15 are integrated to form a front panel unit 19 which is a housing panel assembly. Then, the front panel unit 19 is attached to a chassis (not shown) with screws to form a housing.

FIG. 8 is an exploded perspective view of the memory card device unit mounted on the front base 12. The mounting structure of the unit is simple as will be described later, and its mounting is also easy.

However, when the conventional memory card device unit is attached to the front base, the number of attaching screws is large because the card substrate has a separate structure as shown in FIG. That is, as shown in the exploded perspective view of FIG. 15, the memory card header block 123a is fixed to the card substrate 122 with the two screws 127. Soldering by dipping is performed in that state. After that, the memory card ejector block 123b is coupled to the header portion 123a. The memory card device unit in that state is fixed to the unit mounting plate 121 with two screws 128. In this way, the conventional unit was attached with a total of four screws. Incidentally, in this conventional example, the LED 126 for displaying the mounted state or the operating state of the card is attached separately from the above unit.

Therefore, when mounting the memory card device unit of the housing of the present embodiment to the front base, the number of mounting screws is reduced to facilitate the mounting.

More specifically, as shown in FIG. 9, the memory card device unit of the device of this embodiment is composed of a memory card header / ejector block 17 and a card substrate 16 on which a connector 31 is mounted. To be done.

The memory card header / ejector block 17 has a guide portion of the memory card inserted from its own memory card insertion slot 17c and an eject button 18 which is an eject operation portion. Through the ejector block 17b, which is formed as a thin three-dimensional body, having two substantially parallel main surfaces that are developed so as to extend from the side near the mouth 17c in the insertion direction of the memory card, and through this card ejector block 17b. The card ejector block 17b has a conductor portion for making an electrical connection with a memory card to be loaded, and is mechanically coupled to the card ejector block 17b so as to be substantially contained in the space sandwiched between the extension portions of both main surfaces thereof. A possible card head block 17a is integrally formed and formed.

The card board 16 for transmitting and receiving signals to and from the loaded memory card is positioned along one of the two main surfaces, and the board 16 and the header / ejector block 17 are arranged. Is attached to the attaching portion 12h of the front base 12 serving as a reinforcing member through the screw holes 12k through the attaching holes 16k and 17k with a small number of two screws 24.

In this case, since the screw hole 12k is provided in the front base 12, it is not necessary to use a nut.

As described above, in this embodiment, the mounting structure of the memory card device unit is simple and the mounting thereof is easy. Further, in the conventional memory card device unit, there is a problem in that a separate substrate for mounting an element such as an LED is required, or the mounting position corresponds to the coupling / releasing path of the card ejector, resulting in high cost for mounting the substrate.

Therefore, in the above-described embodiment, as shown in FIG. 9, the LED 32, which is a component or an element relating to the exchange of signals with the memory card, is mounted on the card substrate 16. The mounting position of the ejector block 17b is in the vicinity of the card insertion slot 17c so as not to interfere with the LED 32 when the eject block 17b is coupled to or removed from the header block 17a. The LED 32 is arranged at a position away from the displacement locus.

On the other hand, in the conventional memory card device unit, as shown in FIG. 16, in the case where the ejector block 133b, the header block 133a and the LED 136 are arranged on the card substrate 132, the LED 136 is the ejector block 133b. It was located on the moving path in the E direction at the time of connection to and disconnection from the header block 133a. Therefore, in this state, the LED 136 interferes with each other and it is impossible to connect or disconnect the ejector block 133b.

Since the card board 132 is generally soldered by dipping, the header block 133a and the LED 136 are mounted on the card board 132 by connecting the ejector block 133b to the header block 133a in this conventional example. The soldering process was to be performed in this state. Therefore, it is necessary to clean the eject tab lock 133b after the soldering process.

Therefore, in order to not perform the cleaning, the soldering process is performed in a state where the ejector block 133b and the LED 136 are not mounted, then the ejector block 133b is coupled, and the LED 136 is inserted and soldered. Had to do. As described above, in the conventional memory card device unit, the position where the LED 136 is arranged is poor, and there is a problem in assembly.

In the memory card device unit shown in FIGS. 8 and 9 of the present embodiment, the LEDs 32 are arranged so as not to interfere with each other as described above, so that the header block 17 a and the LEDs 32 are mounted on the card substrate 16. This enables solder processing, solves the above-mentioned conventional problems, and simplifies the board mounting process. In addition, the conventional housing having two or more card header ejectors has a problem that space efficiency is poor and a card board is required for each, resulting in cost increase.

FIG. 10 is a perspective view of a housing showing a disposition state of a plurality of memory card device units in consideration of the above-mentioned problem in a stationary image recording / reproducing device for electronic equipment related to the present invention. It is a figure.

The two sets of the memory card device unit of this device are arranged such that one of the main faces of the header / ejector blocks 142 and 143 is positioned so as to be substantially in the same plane. One common card board 141, on which the LEDs 144 and 145, which are elements, and the connectors 148 and 149 for connection are mounted, is arranged horizontally in the upper part of the housing. FIG. 11 is a perspective view showing an arrangement state of the memory card device unit and the like on the card board 141. In addition, the insertion and removal directions of the two connection connectors 148 and 149 are the same. Further, it is assumed that the memory card insertion ports 142a and 143a and the eject buttons 146 and 147 are arranged in a line in the horizontal direction.

By the way, in a conventional stationary image recording / reproducing apparatus having a plurality of memory card device units built therein, an example of the arrangement state of the plurality of units is a perspective view of a casing 141 of FIG. Shown in the figure. As shown in the figure, in the main body 141, two sets of header / ejector blocks 142 and 143 and card boards 144 and 145 are arranged in two columns in parallel. In this conventional example, the distance d between the card boards 144 and 145 is widened because the height of the signal line harness connectors 146 and 147 themselves and the connector insertion / removal required dimension are widened, and the dead space is reduced. Increase. In addition, it is difficult to insert and remove the connector. Furthermore, there was a problem that the card substrate was separated into two.

FIG. 18 is a perspective view showing an arrangement state of a plurality of other conventional memory card device units in a stationary image recording / reproducing device having a plurality of units. In the body 151, the two sets of header / ejector blocks 152 and 153 and the card substrates 154 and 155 are arranged in two vertical columns at positions separated from each other. This conventional example requires a card substrate separated into two pieces, which is a cost disadvantage. Further, since the card insertion port and the card eject button are arranged apart from each other, there are problems such as poor operability.

However, in the case where the memory card device unit of the casing of the stationary image recording / reproducing apparatus of this embodiment shown in FIGS. 10 and 11 is provided, as described above, one card substrate is used. It suffices to apply only 141, which is not only advantageous in terms of cost but also advantageous in terms of installation space. Further, the insertion / removal operation of the connector becomes easy.

The two connection connectors 148 and 149 in the memory card device unit shown in FIGS. 10 and 11 may have a combined shape.

Although the memory card device unit of the casing shown in FIG. 10 is arranged above the casing 140, it may be arranged below the casing 140. Further, if the front panel 101 of the housing of the recording / reproducing apparatus which is the conventional electronic device shown in FIG. 12 is a metal molded product, there is no problem with the shield. However, for example, in the case of a pressed product made of sheet metal, the surface becomes quite monotonous in terms of design. In addition, since it cannot be made into a complicated shape, there are restrictions and it becomes inconvenient. Further, when the die-cast front panel 101 is used, it is extremely disadvantageous in terms of die manufacturing cost and component unit price.

Therefore, the front panel 101 which is a plastic molded product is adopted. In this case, it is necessary to add a shielding function, and one of such structures is considered to be a structure in which plastic plating such as Cu or Ni is applied to establish electrical connection with the metal main chassis in the vicinity of the screw fastening portion. However, the plating thickness is several μ, which cannot be said to be sufficient in terms of the EMI countermeasure. In addition, problems such as the inability to use molding materials with low heat resistance will occur.

There is also a method of applying a conductive coating instead of the above plastic plating, but in this case, there is a problem in the adhesion of the coating, and the cost is also disadvantageous.

It is also conceivable that the front panel 101 is a plastic molded product containing a conductive filler to reduce the resistance value of the panel. In this case, there are still problems such as the appearance of filler and increased material costs. Furthermore, it is necessary to ground the main chassis, but there is also the problem that the contact between the chassis and the filler is electrically unstable at that contact.

In consideration of the above problems, the shape and function of the outer surface or the outer surface portion of the housing are not limited, and there is no disadvantage in terms of cost, and the housing has a sufficient shield characteristic. The electronic device is shown in FIG.

FIG. 1 is a disassembled perspective view of a casing of a stationary image recording / reproducing apparatus for an electronic device according to an example of the present invention. The external view of the casing is substantially the same as the external view of the conventional stationary image recording / reproducing apparatus shown in FIG.

The casing is attached to the chassis 1 with a main chassis 1 made of sheet metal, to which an exterior body (not shown) is attached, and screws attached to the chassis 1, and a predetermined inner surface of a front frame 3 to be described later. A front base 2 that is a sheet metal shield member that is mounted so as to cover a certain back surface; a front frame 3 that is a molded outer surface member that is attached to the front base 2 via a screw and that is exposed to the outside of the housing; A front sheet 4 which is affixed to the surface of the front frame 3 and is formed of an aluminum thin plate, a vinyl chloride sheet or the like, and is fixed to the front frame 3 and the front base 2, and a switch element such as an operation switch and a switch. The printed circuit board 5 is provided with operation buttons.

The front base 2 is attached to the front frame 3 with a screw through a screw hole 2b provided on the front surface and a screw hole 3b of the front frame 3 and is a front panel unit which is a housing panel assembly. 6 is formed. When the front base 2 and the front frame 3 are attached, the pins 3c and 3d provided on both sides of the front frame 3 are fitted into the round holes 2c and the long holes 2d of the front base 2 to ensure the accuracy. The positioning between the two can be performed.

Further, a plurality of bosses 3e are planted in the front frame 3, and one metal boss 2e is planted in the front base 2. Further, the front base 2 is provided with an escape hole 2j through which the boss 3e of the front frame 3 can pass. On the other hand, the printed board 5 is provided with screw holes 5e at positions facing the bosses.

The printed circuit board 5 is attached to the bosses 3e, 2e by screws through the screw holes 5e, and is attached to the front base 2 and the front frame 3. In the mounted state, the operation switch button (not shown) provided on the printed circuit board 5 is exposed to the outside through the button holes 2f and 3f of the front base 2 and the front frame 3.

A ground line of the circuit is connected to the land portion of the printed circuit board 5 which comes into contact with the metal boss 2e of the front base 2, and the front base 2 is kept at the same potential as the ground of the printed circuit board 5. . 2 shows a cross-sectional view of the front base 2 around the metal boss 2e. The metal boss 2e is planted in the front base 2 by welding, caulking or the like.

A memory card device unit (not shown) is attached to the front base 2 at the bent portion 2h.

The integrated front panel unit 6 is attached to the main chassis 1 via the front base 2 to complete a housing. The front panel unit 6 is attached by screw holes 1a provided on the bottom and front sides of the chassis 1, and screw holes 2a provided on the bent portions 2i above and below and on both sides of the front base 2, respectively. It is attached by. The front base 2 has bent portions 1i on the lower surface and the front portions of both side surfaces so that the front base 2 can be easily inserted.

As described above, in the housing structure of the apparatus of this example, the front frame 2 serving as the shield member is integrally joined and closely adhered to the front frame 3 serving as the molding member along the back surface thereof. did. Therefore, the outer surface exposed to the outside has, for example, a predetermined shape, a predetermined marking, a predetermined insulating property, and the like, and the ease of assembling of the housing panel having the shield property is ensured. In addition, the shape and function of the outer surface or the outer surface portion of the housing are not limited, which is advantageous in terms of cost.

[0054]

[Effect of device]

 As described above, the housing of the electronic device of the present invention has an advantage that the memory card device unit can be attached to the front base with a small number of fastening members.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a housing of a stationary image recording / reproducing apparatus for an electronic device according to an example of the present invention.

FIG. 2 is a cross-sectional view around a mounting portion of a front base and a printed circuit board in the housing of FIG.

FIG. 3 is an exploded perspective view of a housing of a stationary image recording / reproducing apparatus for an electronic device according to an embodiment of the present invention.

FIG. 4 is an exploded perspective view around a mounting portion of a front base and a front frame of the housing of FIG.

5 is a perspective view around a mounting portion of a front base and a front frame of the housing shown in FIG.

6 is a cross-sectional view of a mounting portion of the front base and the front frame of the housing of FIG.

7 is an exploded perspective view of an attachment positioning portion of a front base and a front frame of the housing shown in FIG.

8 is an exploded perspective view of a card device unit attached to the front base of the housing shown in FIG.

9 is a perspective view of a card device unit to which the housing of FIG. 3 is attached.

FIG. 10 is a perspective view of a housing showing a disposition state of two memory card device units incorporated in a stationary image recording / reproducing apparatus of an electronic device related to the invention.

11 is a perspective view of the memory card device unit of FIG.

FIG. 12 is a perspective view showing an external appearance of a casing of a stationary image recording / reproducing device which is a conventional electronic device.

13A and 13B are cross-sectional views of a mounting portion of a front base and a front frame of another conventional electronic device housing, in which FIG. 13A is a sectional view of a mounting portion of one conventional example, and FIG. It is sectional drawing of the attachment part of a prior art example.

FIG. 14 is a sectional view of a mounting portion of a side mounting structure of a front base and a front frame of a housing of another conventional electronic device.

FIG. 15 is an exploded perspective view of a card device unit attached to the housing of another conventional electronic device.

FIG. 16 is a side view of a card device unit attached to the housing of another conventional electronic device.

FIG. 17 is a perspective view showing a mounted state of two sets of card device units in a housing of another conventional electronic device.

FIG. 18 is a perspective view showing a device state of two sets of card device units in a housing of another conventional electronic device.

[Explanation of symbols]

2,12 Front base (shield member) 3,13 Front frame (molded outer surface member) 6,19 Front panel unit (housing panel assembly)

Claims (1)

[Scope of utility model registration request] 1. A guide unit and an eject operation unit for a memory card inserted through its own memory card insertion slot,
A card ejector block formed so as to form a thin three-dimensional body having substantially parallel main surfaces that are developed so as to extend in the insertion direction of the memory card from the side near the memory card insertion slot, and the card. The card ejector block has a conductor portion for making an electrical connection with a memory card loaded through the ejector block, and is positioned so as to be substantially contained in a space sandwiched between extensions of the card ejector block and the two main surfaces. A card header block that is integrally joined with a card header block that can be mechanically coupled to the card header ejector block so as to be along one of the two main surfaces. A board for transmitting and receiving a signal to and from, and a plate-like strength member along the other of the two main surfaces,
An electronic device comprising the substrate, the card header ejector block, and the plate-shaped strength member integrally fastened together in the above order by a small number of fastening members.