JP2003081299A - Lid structure for electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lid structure which is easy to put on/off but cannot be simply removed if one does not know how to put in on/off. SOLUTION: When a blind lid 18 is to be mounted n a service opening 16, the lid 18 is pushed into the opening 16 while an index 31 and an index 32 are aligned. An engaging claw 24 elastically deforms to engage with the opening 16. Since the engaging claw 24 is set between an anti-rotating member 28 and a rotation stop member 29, an imprudent rotation of the lid 18 is prevented. When removing the blind lid 18, the lid 18 is rotated so that the engaging claw 24 comes beyond the rotation stop member 29, and the engaging claw 24 and a release notch 17 of the service opening 16 are aligned with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid structure including an opening of an electronic device and a blind cover closing the opening.

[0002]

2. Description of the Related Art In various types of electronic equipment such as printers, some components, control boards, etc. are built into a housing, and the compatibility of the respective components, control boards, etc. is adjusted after they are almost in a product state. This is because proper adjustment may not be possible unless adjustment is made in the product state. Therefore, the electronic device is provided with a service opening that is an opening for inserting an adjustment jig, a sensor, or the like inside the device in a product state.

The service opening is closed by a blindfold cover except during adjustment in order to prevent fingers and foreign matter from entering the inside of the product.

[0004]

It is necessary that the blind cover of the service opening used for adjusting a dangerous part such as generation of high voltage cannot be easily removed even if the user touches it. Further, from the viewpoint of work efficiency during device adjustment, it is desirable that the device can be easily attached and detached.

An object of the present invention is to solve the above problems, and an object thereof is to provide a lid structure which can be easily attached and detached, but cannot be easily removed without knowledge of the attaching and detaching method.

[0006]

In order to solve the above problems, a lid structure for an electronic apparatus according to the present invention comprises a circular opening and a blind lid that closes the opening. The blindfold lid consists of a blindfold plate that covers the opening and a pair of engaging claws that engage with the inner edge of the opening.When removing the blindfold lid, rotate the blindfold lid to release the engaging claw. Match the notch and release the engagement with the engagement claw. In addition, a rotation blocking member and a rotation stopping member are formed inside the housing in order to define a rotation direction when the blind cover is removed. Further, an index is provided to indicate the attachment position of the blindfold cover so that the engagement claw is set between the rotation blocking member and the rotation stop member.

Further, in order to prevent the blind cover from being easily rotated, a pair of opening notches having a size that does not expose the opening are formed on the outer peripheral edge of the blindfold plate, and the opening notch has a rotating force in the same direction. The blindfold lid is rotated by adding at the same time.

[0008]

1 is a perspective view showing the appearance of a color thermal printer embodying the present invention. The color thermal printer 2 has a box shape, and a paper feeding / discharging unit 3 is provided on the left side of the front surface.
However, an operation panel 4 for performing various operations of the printer is provided on the front right side. In the paper feeding / discharging unit 3, a cassette 5 containing a plurality of unused color thermosensitive recording papers is set in a paper feeding opening 6, and a printed color thermosensitive recording paper 7 is the cassette 5
The structure is such that it is discharged to the upper part of.

As shown in the exploded view of FIG. 2, the color thermal printer 2 includes a chassis 10, a print section 11 attached to the chassis 10, a front panel 12 covering the front side of the print section 11, and a print section 11. The outer cover 13 covers the upper part and the back of the. Print part 11
Is a recording paper transporting unit that transports the color thermal recording paper supplied from the cassette 5, a thermal head that presses against the color thermal recording paper that is being transported to perform thermal recording, and a thermal recording that has already been recorded on the color thermal recording paper. The color-forming layer is composed of a photo-fixing device for fixing the color-forming layer by irradiating it with ultraviolet rays so as not to develop color.
The chassis 10 and the front panel 12 are formed of plastic, and the exterior cover 13 is formed by bending a thin metal plate.

The optical fixing device of the printing unit 11 is provided with a light control sensor for measuring the light emission intensity of the light source and a control circuit for adjusting the light emission intensity according to the measurement result of the light control sensor. . However, the dimming sensor has a slightly different sensitivity for each product or lot. Therefore, it is necessary to set the sensitivity of the built-in dimming sensor using the reference dimming sensor for adjustment.

The adjustment using the reference light control sensor is as follows.
It is preferable to carry out after the assembly of the color thermal printer 2 is completed, since there is no influence of disturbance. For this reason, the color thermal printer 2 of the present invention is provided with a service opening for inserting the reference light control sensor into the color thermal printer 2 after the assembly of the color thermal printer 2 is completed. The adjustment of the dimming sensor of the optical fixing device is performed not only when the printer is assembled but also when the light source of the optical fixing device is replaced.

As shown in FIG. 3, the service opening 16
Is a form in which a pair of release notches 17 are formed on the outer periphery of a circular hole. A counterbore hole 20 for accommodating a blindfold plate 19 of a blindfold lid 18 is formed on the outer surface of the chassis 10 below the service opening 16. Further, the service opening 16 is provided with the counterbore hole 2 so that the wall pressure of the service opening 16 does not become thinner than other parts of the chassis 10.
It is provided on a circular projecting portion 21 projecting on the inner surface of the chassis 10 by a depth of zero.

The blind cover 18 is made of the same plastic as the chassis 10, and has a circular blind plate 19 housed in the countersunk hole 20 and a pair of engaging claws integrally formed on the inner surface side of the blind plate 19. 24 and guide ridges 25. The engaging claws 24 are arranged such that the claw portions face each other outward and are elastically deformable. Therefore, when attaching the blind cover 18 to the chassis 10,
Notch 1 for releasing the direction of the engaging claw 24 from the opening 16 for service
7 does not need to be adjusted, and as shown in FIGS. 4 and 5,
By pushing the blind cover 18 into the countersunk hole 20, the engaging claw 24 elastically deforms and engages with the service opening 16. Although the engagement amount between the engaging claw 24 and the service opening 16 seems to be small in the figure, since the service opening 16 is circular, in reality, as shown in FIG. Have a total amount.

The guide protrusion 25 is inserted into the service opening 16 when the blind cover 18 is attached to the chassis 10. By contacting the edge of the service opening 16, the engagement state of the engagement claw 24 in the service opening 16 is maintained.

The chassis 10 surrounds the service opening 16.
A pair of rotation blocking members 28 and rotation stopping members 29 are provided on the protruding portion 21 in a rotationally symmetrical manner. The rotation blocking member 28 is a protrusion provided higher than the height of the claw portion of the engagement claw 24, and contacts the engagement claw 24 to prevent the blind cover 18 from rotating in the counterclockwise direction. The rotation stop member 29 is
It is a protrusion that is lower than the rotation preventing member 28 and has an arcuate cross section, and contacts the engaging claw 24 to stop the clockwise rotation of the blind cover 18. However, since the rotation stopping member 29 has a low height and an arc shape, the blind lid 1
When the turning force of 8 or more is applied, the engagement claw 24 gets over the rotation stopping member 29, and the blind cover 18 is allowed to rotate in the clockwise direction.

On the outer surface of the chassis 10, around the service opening 16 and on the outer surface of the blind cover 18, a triangular indicator 3 is provided.
1, 32 are provided. Blindfold lid 18 chassis 1
When attached to 0, as shown in FIG. 6, the blindfold lid 18 is pushed into the service opening 16 in a state where these indexes 31 and 32 are butted. Then, the engaging claw 24 engaged with the service opening 16 by elastic deformation is set between the rotation blocking member 28 and the rotation stopping member 29, so that the blind lid 18 is not rotated immediately after the attachment. To be prevented.

The indicators 31 and 32 may be provided by recesses or protrusions when the chassis 10 and the blind cover 18 are molded, or may be provided by painting after molding. Further, the index formed on the concave portion or the convex portion may be coated.

A pair of opening notches 35 having a size that does not expose the service opening 16 is formed on the outer peripheral edge of the blind plate 19.
Is provided. When removing the blindfold lid 18 from the chassis 10, the two pins 38 provided in the opening jig 37 shown in FIG. 7 are inserted into the respective opening notches 35, and in that state, the opening jig 37 is opened. Rotate clockwise. As a result, as shown in FIGS. 8 and 9, the engaging claw 2
Since the positions of 4 and the notch 17 for releasing the opening 16 for service coincide with each other, the blind cover 18 can be removed from the chassis 10.

Next, the operation of the above embodiment will be described. In the manufacturing line of the color thermal printer 2, the assembled color thermal printer 2 is sent to an inspection line where functional inspection and adjustment of each part are performed. In the inspection line, there is provided a fixing device adjusting step for adjusting the dimming sensor of the optical fixing device of the built-in printing unit 11.

As shown in FIGS. 3 to 6, when the color thermal printer 2 is assembled, the service opening 16 provided in the chassis 10 of the color thermal printer 2 has a blind cover 1.
Blocked by 8. In the fixing device adjusting step, the blind cover 18 is removed by using the opening jig 37 shown in FIG. 7, and the service opening 16 is opened.

In the opening jig 37, the two pins 38 provided at the tip are inserted into the two opening notches 35 provided at the outer peripheral edge of the blindfold lid 18, respectively, and then, as shown in FIG. Rotate in the clockwise direction. As a result, as shown in FIGS. 8 and 9, the positions of the engaging claw 24 and the notch 17 for releasing the service opening 16 are aligned, and the engagement of the engaging claw 24 with the service opening 16 is released. As a result, the blindfold lid 18 can be removed from the chassis 10.

A reference dimming sensor is inserted into the exposed service opening 16. Then, the sensitivity of the light control sensor incorporated in the color thermal printer 2 is adjusted according to the reference light control sensor.

When the sensitivity adjustment of the light control sensor is completed, the reference light control sensor is pulled out from the service opening 16. Further, a blind lid 18 is attached to the service opening 16 again.

As shown in FIG. 6, the blind cover 18 is attached to the chassis 10 by pushing the blind cover 18 into the service opening 16 with the index 31 of the chassis 10 and the index 32 of the blind cover 18 abutted against each other. . As a result, the engaging claws 24 elastically deform and engage with the service opening 16,
A blind plate 19 completely closes the service opening 16. In this way, the blind cover 18 can be easily attached without using a tool, a jig, or the like. In addition, the engaging claw 24
Is set between the rotation blocking member 28 and the rotation stopping member 29, so that the blind lid 18 is prevented from rotating immediately after mounting.

Since the blindfold lid 18 cannot be removed from the chassis 10 without using the opening jig 37, it cannot be accidentally removed by a user or the like. Therefore, it is possible to effectively prevent the foreign matter from entering the color thermal printer 2 and the user's careless access to the high-voltage portion.

In the color thermal printer 2 after sale, the light source of the built-in optical fixing device deteriorates with time. Therefore, the light source of the optical fixing device is exchanged for maintenance, but also at that time, various adjustments can be easily performed by attaching and detaching the blind cover 18.

The blind cover 18 may not be attached to the chassis 10 when the color thermal printer 2 is assembled, but may be attached at the end of the fixing device adjusting step. According to this, the work of removing the blind cover 18 can be omitted in the fixing device adjusting step.

Although a color thermal printer is used as an example of the electronic device, the lid structure of the present invention can be naturally used in other various electronic devices.

[0029]

As described above, according to the lid structure of the electronic device of the present invention, the blind lid can be easily attached and detached, so that the working efficiency in the assembly process and the inspection process can be improved. it can. In addition, since it cannot be easily removed without knowledge of the attachment / detachment method, the user will not accidentally remove it, and the user will not be able to inadvertently place foreign objects inside the electronic device or dangerous areas such as high voltage. It is possible to prevent access.

[Brief description of drawings]

FIG. 1 is an external perspective view of a color thermal printer embodying the present invention.

FIG. 2 is an exploded perspective view showing a configuration of a color thermal printer.

FIG. 3 is an external perspective view showing a configuration of a service opening and a blind cover.

FIG. 4 is an external perspective view showing a state of a service opening to which a blind cover is attached.

FIG. 5 is a cross-sectional view of a main part of a service opening when a blind cover is attached.

FIG. 6 is a top view of the service opening when the blind cover is attached.

FIG. 7 is an external perspective view showing a configuration of an opening jig.

FIG. 8 is a top view of the service opening when the blind cover is removed.

FIG. 9 is a cross-sectional view of essential parts of a service opening when the blindfold lid is removed.

[Explanation of symbols]

2 color thermal printer 10 chassis 16 Service openings 17 Notch for release 18 blindfold 19 blinds 24 Engaging claw 28 Rotation blocking member 29 Rotation stop member 31, 32 indicators 37 Opening jig

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2C061 AQ04 AR01 BB10 BB12 CD28                 3E084 AA05 AB10 BA01 CA01 CC03                       EA04 EB03 EC03 FA09 FC09                       GA03 GA08 GB03 GB14 JA19                 4E360 AB09 AB12 AB31 BA08 BC03                       BC04 BC06 EA18 EC12 ED12                       ED13 ED14 ED23 ED27 EE03                       FA08 GA06 GA22 GA46 GB48

Claims (2)

[Claims] 1. A circular opening provided in a housing of an electronic device, a blind plate covering the opening, and a blind plate provided in the blind plate,
The blindfold plate is fixed in a state of engaging the inner edge of the opening to close the opening, and at least one of the engaging claws is elastically deformed when engaged with the opening. A blind cover that is rotatable while being fitted together with a pair of openings provided in the opening that releases the engagement of the engaging claw with the service opening when the blind cover is rotated and the engaging claws match. A release notch, a rotation blocking member that is provided around the opening on the inner surface of the housing, and that abuts at least one engaging claw to prevent the blind cover from rotating to one side of the opening. It is provided on the periphery and prevents at least one engaging claw from rotating the blind cover to the other side, and when the blind cover is rotated by a force greater than a specified value, the engaging claw moves to the other side. A pair of rotation stop members that allow rotation, the periphery of the opening on the housing surface, and the surface of the blind plate. And an index for instructing a mounting position of the blindfold lid so that at least one engagement claw is engaged with the opening between the rotation preventing member and the rotation stopping member. Electronic device lid structure. 2. A blind lid is formed by forming a pair of notches for opening on the outer peripheral edge of the blindfold plate, the opening notches having a size that does not expose the openings, and applying a turning force in the same direction to the notches for opening at the same time. The lid structure for an electronic device according to claim 1, wherein the lid structure is rotated.