JPH0743756B2 - Cover plate mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention has a panel having an insertion port formed on the front surface of a box body for covering and guiding both sides of a card and the like.
The present invention relates to a lid plate mounting structure for closing an opening of a box body by fixing the mounting portion of the lid plate to the abutting piece on the rear side of the box body so as to fix the peripheral edge thereof at the same time.

[Prior Art] An IC card in which a semiconductor integrated circuit (IC) is embedded in a card and the like, and an IC card that retains memory and arithmetic functions is housed in a chassis as a card holder and information is exchanged with the IC card. The reader / writer is known.

Such an IC card reader / writer has a hermetically sealed structure in which the surroundings are shielded from the outside, and information is exchanged with the IC card inserted at a predetermined position from the insertion port.

That is, a circuit board incorporating ICs is stored inside this box, and if dust or the like enters this box, electrical control malfunctions occur, so the area around them is sealed and the card is inserted. The mouth is also required to be securely closed with a shutter or the like.

In such a reader / writer, a panel having a U-shaped cross section, which covers the surface and both side surfaces for guiding and storing cards and the like, is fixedly provided with a panel having an insertion opening, and the opening side is fixed and closed by a cover plate. Is configured.

In this case, when assembling the IC card reader / writer, first fix the card holder equipped with a coupler that guides and stores the IC card etc. at a predetermined position and exchanges information with this IC card on the bottom of the box, On the side of the card holder on the same bottom
Fix the IC card ejection mechanism and place it on the top of the card holder.
Attach a protective cover plate that has an interlock mechanism that positions and locks the IC card by electrical control, then fix the panel that has a shutter that closes the IC card insertion slot to the front of the box, and then Assembly work of the box body is performed in the process of attaching the cover plate to the opening.

In this case, the conventional lid plate mounting structure that is mounted in the final assembly step is configured as follows.

That is, a plurality of slits are formed in series on the upper front side behind the panel that is attached to the front surface of the box body, and on the other hand, a plurality of projecting pieces are provided at the leading edge of the lid plate so as to engage with the slits. A pair of mounting portions is formed at the rear end thereof and is fixed by being screwed into the screw holes on the upper surface of the box body.

Therefore, in the lid plate, first, the projection piece at the front edge is locked in the slit of the panel, and then the mounting portion at the rear end of the lid plate is fixed by screwing it onto the upper surface of the box body with two small screws.

[Problems to be Solved by the Invention] However, according to the conventional cover plate mounting structure configured as described above, after the projection pieces at the tips are respectively locked in the slits of the panel, the mounting portions at the rear ends are screwed. In doing so, due to the error of the parts, the mounting part is not accurately positioned, it takes time to align the center, and the side edge intermediate part is not fixed, so stable support cannot be achieved, and thus the airtightness cannot be secured. It had some difficulties.

Therefore, an object of the present invention is to fixedly install a panel having an insertion opening formed on the front surface of a box body that covers the surface and both side surfaces for guiding and storing cards and the like, and move the lid plate forward of the panel side to the box side. By assembling the lid plate attachment part to the abutment piece on the rear side of the body and fixing it by screwing, the peripheral edge is also fixed at the same time, and the box opening part is closed to facilitate the assembly work of the box body. Another object of the present invention is to provide a lid plate mounting structure capable of increasing work efficiency and drastically reducing the number of assembling steps, and achieving reliable fixing.

[Means for Solving the Problems] In order to achieve the above object, the lid plate mounting structure according to the present invention is a box having a U-shaped cross section for covering the upper and lower surfaces and both side surfaces of the card so as to guide and store the card and the like. A panel having an insertion opening formed on the front surface of the body is fixed, and in a mounting structure of a lid plate that closes the opening side of the box body, a plurality of slits are provided at one side edge of the panel back surface mounted on the front surface of the box body, A part of both end edges on the opening side of the box body is bent inward to provide locking pieces parallel to the bottom surface of the box body, and the rear end portions of both side surfaces are bent inward to form the bottom surface. And a plurality of projecting pieces that can be engaged with the slits are provided at the front end and part of both side edges is bent to engage the engaging piece in front of the bent portion. Provide a locking part that has a groove that can be stopped, and bend the rear end to the abutting piece of the box body. By forming a lid plate by providing a contacting mounting portion, the lid plate is moved in one direction with respect to the box body, and the abutting pieces of the box body and the mounting portion of the lid plate that are in contact with each other are screwed and fixed. At the same time, the entire periphery of the lid plate is fixed to the box body.

[Operation] According to the lid plate mounting structure of the present invention, a panel having an insertion opening is fixedly provided on the front surface of the box body that covers the surface and both side surfaces for guiding and storing cards and the like, and the lid plate is the panel. The mounting portion of the lid plate is brought into contact with the abutment piece on the rear side of the box body and fixed by screwing, so that the peripheral edge is also fixed at the same time and the box body opening portion is closed. As a result, the work of assembling the box body can be facilitated, the work efficiency can be increased, and the number of assembling steps can be significantly reduced. Further, the lid plate can be securely fixed and the opening can be closed.

[Embodiment] Next, an embodiment of a cover plate mounting structure according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing a state in which a cover plate is assembled to a box.

In FIG. 1, reference numeral 10 indicates a box body in which a sheet metal is formed in a U-shaped cross section composed of a bottom surface 14 and both side surfaces 16a and 16b thereof,
The box body both side surfaces 16a, 16b are provided with locking pieces 18a, 18b formed by bending a part of the end edges inwardly in parallel with the bottom surface 14, and the rear end portions of the both side surfaces 16a, 16b are arranged inside. The contact pieces 20a, 20b which are bent at a right angle to the bottom surface 14 are provided.
Penetration screw holes 22a and 22b are formed in each of them.

Further, a panel 24 having an IC card insertion opening (not shown) is fixedly provided in front of the box body 10, and a main part of an IC card reader / writer described later is attached to the panel 24.

That is, as shown in FIG.
The tip of the chassis 26 for guiding and storing the IC card (not shown) inserted from is fixed (see FIG. 3).

And, in this chassis 26, the IC inserted at the proper position
A circuit board 28 that positions and locks the card to transfer information to and from this IC card, and various mechanisms (see FIG. 3) that discharge it by electrical control when the transmission is completed are attached to the IC card. A reader / writer is configured.

In this case, the circuit board 28 has the long holes 29 formed in the board 28.
After locking portions 27a, 27b, 27c and 27d formed on the chassis 26 are respectively locked in the a and 29b and the notch grooves 29c and 29d, they are fastened with one small screw 31 and attached to the chassis 26.

Further, as shown in FIG. 3, a lock lever 30 having a protrusion 56 formed on the inner surface thereof is elastically biased counterclockwise on the right side of the chassis 26 for positioning and locking the IC card. The turning action is blocked by the contact with the side surface of the chassis.

On the other hand, on the right side surface of the chassis, for example, an electromagnet 32 that is attracted or separated by electrical control is provided.

A metal piece 34 is provided at one end facing the electromagnet 32, and a lock release lever 38 is provided, the other end of which is rotatably supported by the tip of the chassis 26 (on the IC card insertion end side). A locking arm 36 extending at a right angle from this is provided in the middle.

Further, the lock release lever 38 has a locking portion 44 for locking the output end 40a of the torsion coil spring 40 wound around its rotation center at one end, and the other output end 40b of the coil spring 40. A locking projection 42 is formed on the side surface between the metal piece 34 and the rotation center 38a to lock the.

In addition, the operation lever 46 is on the right side of the tip of the chassis.
It is rotatably supported by a support shaft 48 fixed to 26, and the rotation center 38 of the lock release lever 38 is provided on the side surface of the operation lever 46.
A locking projection 46a is formed on the outer side between a and the locking projection 42 and is engaged with the output end 40b of the coil spring 40.

Further, an L-shaped projection is integrally formed on the back surface of the tip of the operation lever 46, and the horizontal piece 46b of this projection engages the tip of the IC card, and the vertical piece 46c detects when the IC card is inserted. Detected by the container 50.

A hook 36d is formed at the lower end of the tip of the operation lever 46, and the hook 5d in front of the chassis 26 is formed on the hook 36d.
One end of the tension spring 26a locked to 2a is locked.

Therefore, as shown in FIG. 3, the operating lever 46 is in a state of being urged counterclockwise by the tension spring 26a.

The IC card reader / writer configured as described above operates as follows.

That is, when the IC card is artificially inserted through the panel insertion opening, the tip of the IC card is inserted into the operation lever 46 by the insertion operation.
The operation lever 46 is rotated clockwise against the tension spring 54 by being locked to the lateral piece 46b at the tip.

When the operating lever 46 is further rotated, the locking protrusion 46a of the operating lever 46 elastically deforms the output end 40b of the torsion coil spring 40, which is locked with the locking protrusion 46a, counterclockwise.

Due to this elastic deformation, the locking projection 42 of the lock release lever 38 separates from the output end 40b of the coil spring 40 and is rotated counterclockwise by the biasing force of the coil spring 40 locked to the locking portion 44. try to. However, since the metal piece 34 at the tip of the lock release lever 38 is attracted by the electromagnet 32 under electrical control, it remains in a stationary state.

Further, when the IC card is inserted to a predetermined position, the vertical piece 46c of the operation lever 38 is detected by the detector 50, and the lock lever 30 is operated together with the insertion operation of the IC card to project the protrusion.
56 is elastically locked in the notch of the IC card. Information is transferred to and from the IC card with the IC card positioned and locked, and when this is completed, the magnetic force of the electromagnet 32 is released in response to an electric command from a personal computer or the like.

As a result, the lock release lever 38 rotates counterclockwise together with the locking lever 36 by the biasing force of the coil spring 40.

By this rotation operation, the locking lever 36 contacts the tip of the lock lever 30 to rotate the lock lever 30 in the clockwise direction, and the engagement with the IC card is released.

Therefore, the IC card is pushed by the lateral piece 46b of the operation lever 46, which is biased by the action of the tension spring 54, and discharged to the outside.

As explained above, exchange information with IC cards.
In the IC card reader / writer, the electric control equipment housed inside the box is subtly affected by the external environment, so these must be completely sealed from the outside.

Thus, as shown in FIG. 3 and FIG.
By fixing the panel 24 to the front end of the inside 10, the main part of the IC card reader / writer is stored and held in the box 10,
The opening of this box is closed by the cover plate 12 (see FIG. 2).

That is, as shown in FIG. 1, the cover plate 12 can be engaged with the three slits 25a, 25b, 25c formed in the upper portion of the rear end surface of the panel 24 at the front end of the cover plate 12 formed in a substantially rectangular shape. Three protruding pieces 58a, 58b, 58c and a locking portion 62 in which groove portions 60a, 60b are formed in the front (panel side) by bending a part of both end edges of the cover plate 12
It is composed of a and 62b and a mounting portion 64 in which the rear end of the cover plate 12 is bent and a pair of left and right through holes 64a and 64b are formed.

Therefore, when assembling the lid plate, the lid plate 12 is attached to the panel 24.
To the side and insert the three projecting pieces 58a, 58b, 58c of the cover plate 12 into the slits 25a, 25b, 25c of the panel 24, and at the same time, cover plate 1
2 The groove portions 60a, 60b of the engaging portions 62a, 62b at both end edges are engaged with the engaging pieces 18a, 18b of the box body 10.

By this forward movement of the cover plate 12, the mounting portion 64 at the rear end of the cover plate 12 contacts the contact pieces 20a, 20b at the rear end of the box body 10 to position the cover plate 12.

However, by adopting the lid plate mounting structure of the present invention, the lid plate 12 has a through hole formed in the mounting portion 64 at the rear end thereof.
Insert two machine screws 66a, 66b through 64a, 64b through screw holes 22a,
It can be easily fixed by simply screwing it to 22b.

In this way, by securely fixing the opening of the box body 10, it is possible to assemble an IC card reader / writer having a sealed structure as shown in FIG.

[Effects of the Invention] As is apparent from the above-described embodiments, according to the lid plate mounting structure of the present invention, the card is inserted in the front and the bottom of the box that covers the upper and lower surfaces and both side surfaces of the card so as to guide and store the card. By fixing a panel having a mouth and fixing the mounting portion of the cover plate to the contact piece at the rear of the box body, the peripheral edge of the panel is also fixed at the same time, and the box body opening is closed. , The lid plate can be securely fixed to the box to close the opening, and the assembly work of the box can be facilitated to improve the work efficiency and significantly reduce the assembly man-hours and improve the productivity. And the manufacturing cost can be reduced.

Although the preferred embodiment of the present invention has been described above, it is needless to say that the present invention is not limited to the above-described embodiment and various design changes can be made without departing from the spirit of the present invention.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and is an exploded perspective view showing a state where a cover plate is assembled to a box body. FIG. 2 is a perspective view showing a state where a circuit board is attached to a panel together with a card holder. FIG. 4 is a plan view of an IC card reader / writer used as an embodiment of the present invention seen from above, and FIG. 4 is a partial perspective view of an assembled box body. 10 ... Box body, 12 ... Lid plate 14 ... Bottom surface, 16a, 16b ... Side surface 18a, 18b ... Locking piece, 20a, 20b ... Abutting piece 22a, 22b ... Through screw hole 24 ... Panel, 24a ... Insertion opening 25a, 25b, 25c ... Slit 26 ... Chassis, 30 ... Lock lever 58a, 58b, 58c ... Projection piece 60a, 60b ... Groove portion, 62a, 62b ... Locking portion 64 ... Mounting portion, 64a, 64b ... Through hole

Claims (1)

[Claims] 1. A panel having an insertion opening formed in the front surface of a box body having a U-shaped cross section, which covers the upper and lower surfaces and both side surfaces of the card so as to guide and store the card, and closes the opening side of the box body. In the lid plate mounting structure, a plurality of slits are provided on one side edge of a panel rear surface mounted on the front surface of the box body, and a part of both end edges on the opening side of the box body is bent inwardly to form the box body. A plurality of projecting pieces that can be locked to the slits by providing a locking piece parallel to the bottom surface and bending the rear end portions of the both side surfaces inward to form a contact piece perpendicular to the bottom surface. And a part of both side edges is bent and a locking part is formed in front of this bent part to form a groove that can be locked with the locking piece, and the rear end is bent to form the box. A lid plate is constructed by providing a mounting portion that abuts on the abutting piece of the body, and the lid plate is moved in one direction with respect to the box body. The lid plate is characterized in that the abutting piece of the box body that comes into contact with the body and the mounting portion of the lid plate are fixed by screwing, so that the entire periphery of the lid plate is fixed to the box body at the same time. Mounting structure.