JP4416477B2 - Cabinet for electronic equipment - Google Patents

Description

  The present invention relates to a cabinet that positions and accommodates an electronic component therein, and more particularly to an electronic device cabinet in which a member for attaching the electronic component is formed of a metal material.

  2. Description of the Related Art Conventionally, there are two types of cabinets, which are housings that house electronic components, in which a portion to which electronic components are attached is formed of plastic and a portion formed of a metal material.

  In the case of a plastic cabinet, since a predetermined mold is used, the work is repeated after the mold is created, which is efficient. However, in the case of a cabinet having a complicated structure or a fine structure, the mold itself must be created. In addition to difficulty, electromagnetic waves generated due to the high frequency, high voltage, etc. of the electronic components housed inside need to be radiated to the outside of the cabinet in order to prevent electromagnetic waves from leaking out of the cabinet. There was a problem.

On the other hand, in the metal cabinet 101 shown in FIG. 6, the upper cabinet 103 and the lower cabinet 105 for positioning electronic components are formed, and the electronic components arranged in the lower cabinet 105 are covered with the upper cabinet 103 formed in a dome shape. Formed. In the case of such a metal cabinet 101 , there is no need for an internal metal plating process required in the case of a plastic cabinet, but unevenness such as a boss 107 and a base 109 for positioning electronic components is processed by sheet metal processing. (Cut, bend, weld, etc.), so that there are problems such as wiring (not shown) due to burrs generated in the sheet metal part, damage to internal parts, etc., and the outer surface is exposed to unevenness due to sheet metal processing. There was a problem that impaired the appearance.

  Further, in order to suppress the appearance and the leakage of unnecessary radiation when the lower cabinet 105 is combined with the upper cabinet 103, the connecting portion of the lower cabinet 105 with the upper cabinet 103 is formed in an annular shape as shown in FIGS. By forming the connection surface 111 that is recessed one step in the shape, the lower cabinet 105 and the upper cabinet 103 are flush with each other in a state in which the upper cabinet 103 is fitted (FIG. 7), and are overlapped from the connection portion. Unnecessary radiation and light leakage are prevented.

However, since the upper cabinet 103 and the lower cabinet 105 are usually coated on the outer side surfaces 103a and 105a, which is an electrical insulation process, the outer side surface of the connection surface 111 of the lower cabinet 105 is as shown in FIG. There is also a problem that the coated surface 111 a is not connected to the non-painted surface 103 b inside the upper cabinet 103, and the effective leakage prevention of unnecessary radiation cannot be realized. As a method for avoiding non-conduction due to the connection between the non-painted surface 103b and the painted surface 111a, it is known that the non-painted surfaces are opposed to each other by folding the painted surfaces (see, for example, Utility Model Document 1).

  However, there is a problem that a very difficult processing process is required for the folding process for folding the annular connection surface 111 and enabling the fitting with the upper cabinet 103.

  The present invention has been made to solve the above-described problems, and it is possible to prevent a wiring and internal parts from being damaged by burrs, eliminate a dent in the appearance caused by sheet metal processing, etc., and provide a metal cabinet having a good appearance. The purpose is to provide.

  Another object of the present invention is to realize the fitting and conduction of the upper and lower cabinets with a simple structure even in the cabinet of an electronic device formed of a metal material whose exterior is electrically insulated.

In order to achieve the above object, the present invention has the following configuration.
The present invention is an electronic equipment cabinet that positions and accommodates electronic components, and includes a metal internal cabinet that positions the electronic components, and an external cabinet that houses the internal cabinet,
The mounting projections for mounting the electronic components of the internal cabinet are all formed by drawing , and the external cabinet has an outer base cabinet with a U-shaped cross section in which the entire edge portion for positioning the internal cabinet is raised. An outer lid cabinet having an inverted U-shaped cross section in which the entire edge portion is erected in order to close the opening of the outer base cabinet, and the outer base cabinet and the outer lid cabinet 3 have an electrically insulated outer surface. The inner cabinet is electrically conductive, and the inner cabinet is formed with a fitting surface that allows the entire edge of the inner cabinet to be fitted in surface contact with the inner surface of the outer base cabinet. When attached to the outer base cabinet, the inner surface of the upright side of the outer base cabinet and the fitting surface of the inner cabinet are fitted together. The outer base cabinet is positioned and fixed to be electrically conductive, and the outer base cabinet is formed with a connecting surface that is recessed in one step in a bowl shape on the entire outer surface of the opening of the standing side, and the connecting surface becomes electrically conductive. When the outer lid cabinet is attached to the outer base cabinet, the inner side surface of the upright side of the outer lid cabinet fits into the connection surface of the outer base cabinet and is electrically conducted. Located in equipment cabinet.

Further, the present invention is an electronic equipment cabinet for positioning and housing an electronic component, and includes a metal internal cabinet for positioning the electronic component, and a metal external cabinet for housing the internal cabinet,
The mounting projections for mounting the electronic components of the internal cabinet are all formed by drawing, and the external cabinet has an outer base cabinet with a U-shaped cross section in which the entire edge portion for positioning the internal cabinet is raised. An outer lid cabinet having an inverted U-shaped cross section in which the entire edge portion is erected in order to close the opening of the outer base cabinet, and the outer base cabinet and the outer lid cabinet are electrically insulated on the outer surface. Painted, the inner surface is unpainted and electrically conductive, the inner cabinet is formed with a fitting surface that allows the entire edge of the inner cabinet to be fitted in surface contact with the inner surface of the outer base cabinet, The width of the mating surface in the standing direction is formed so as to protrude from the end of the outer base cabinet in a state of being attached to the outer base cabinet. When the inner cabinet is attached to the outer base cabinet, the inner side surface of the outer base cabinet and the fitting surface of the inner cabinet are fitted and electrically connected, and the outer lid cabinet is connected to the outer base. In the electronic equipment cabinet, the inner surface of the upright side of the outer lid cabinet and the protruding portion of the fitting surface of the inner cabinet are fitted and electrically connected when attached to the cabinet.

According to the onset bright, the order form by all drawing the mounting projection for mounting the cabinet electronic components, wiring and electronic components since there is no occurrence of burrs produced by sheet metal processing without damage, Since cutting is not performed by sheet metal processing, the strength of the internal cabinet and the mounting protrusion can be improved. In addition, since the internal cabinet is configured to be accommodated by the external cabinet, the recess or the like generated by the drawing process is covered by the external cabinet, and the appearance can be formed with a good appearance.

According to the onset bright, because the electrical conduction path is formed through the cabinet at an inner and both metal outer base cabinet and the outer lid cabinet, there is an effect of suppressing unnecessary radiation. Normally, the outer surface of a metal electronic equipment cabinet is painted for electrical insulation, and the inner surface is a non-painted surface. However, in the gist of the present invention, the outer base cabinet and the outer lid cabinet are provided inside. Unnecessary radiation can be suppressed with a simple configuration by forming an electrical conduction path with an existing metal internal cabinet.

According to the onset bright, because electrical conduction can be automatically formed by the assembly work for attaching the outer lid cabinet outer base cabinet, it is possible to eliminate the need to form a separate conductive path. Further, in the assembling work, assembling is possible without being aware of the formation of electrical continuity, and the work efficiency can be improved.

According to the onset bright, it can form an electrical conduction path with a simple configuration. Further, since the metal outer base cabinet is fitted into the inner cabinet, it is not necessary to form a joint surface on the outer base cabinet or the outer lid cabinet in order to assemble the outer base cabinet and the outer lid cabinet. The outer lid cabinet can be configured simply.

  Hereinafter, a first embodiment of an electronic equipment cabinet according to the present invention will be described with reference to FIG. FIG. 1 is a perspective view illustrating a configuration of an electronic device cabinet according to the present embodiment.

  The electronic equipment cabinet according to the first and second embodiments shown as the best mode is, for example, a projector (projecting light onto a subject and projecting an image of a projector, a film, a slide, etc., on a screen or a telecine camera) Projectors, TVs, personal computers, projection displays for enlarging and projecting electronic OHP images, projectors for projecting radio waves into space, etc.), home appliances (electronic devices) such as televisions and microwave ovens, medical What is necessary is just the cabinet for electronic devices which contains electronic parts, such as measurement of a device, control equipment, etc. inside. A specific configuration will be described below.

  An electronic device cabinet 1A according to the first embodiment includes an outer lid cabinet 3, an outer base cabinet 5A, and an inner cabinet 9A, and the outer lid cabinet 3 and the outer base cabinet 5A include the inner cabinet 9A. It is a heavy-duty cabinet. In the present embodiment, the box-shaped electronic equipment cabinet 1A will be described for ease of understanding of the shape, but the shape is not limited thereto.

  The outer lid cabinet 3 is an open rectangular metal cover that stands up at the entire edge and has an inverted U-shaped cross section. The outer surface of the outer lid cabinet 3 is not formed with depressions or protrusions, and the outer surface is coated for electrical insulation. The inside surface is a non-painted surface.

Similarly to the outer lid cabinet 3, the outer base cabinet 5A is a metal housing case having a U-shaped cross section in which the entire edge portion is erected to form an upstanding side 6, and no depressions or protrusions are formed on the plane. The outer surface is painted for electrical insulation and the inner surface is a non-painted surface. In addition, a connecting surface 7 is formed on the standing side 6A on the entire outer surface of the opening of the outer base cabinet 5A. The connecting surface 7 is recessed by one step in a bowl shape to realize the fitting with the outer lid cabinet 3. Note that the fitting (connecting) surface with the outer lid cabinet 3 of the connecting surface 7 is not the painting for insulation in order to enable electrical conduction between the outer lid cabinet 3.

  In the present embodiment, the case where the outer lid cabinet 3 and the outer base cabinet 5A are formed of a metal material will be described. However, the outer lid cabinet 3 and the outer base cabinet 5A may be formed of a material other than metal such as plastic, in order to suppress unnecessary radiation. It is desirable to apply metal plating to the inside.

Inside the cabinet 9A is positioned and arranged member of the electronic component, mounting projections, such as bosses 13 and the base 15 formed from the bottom surface 11 in a convex shape is formed, standing sides 6A of the outer base cabinet 5A to entire edge A fitting surface 17A that can be fitted by surface contact with the inner surface is formed. That is, the fitting surface 17A extends in a direction along the upright side 6A. The internal cabinet 9A is formed of a metal material in order to suppress unnecessary radiation. A high R value steel plate is used for the internal cabinet 9A, and the mounting protrusions such as the boss 13 and the base 15 are all formed of a diaphragm rather than a sheet metal.

  The Rankford value of the high R value steel plate used for the internal cabinet 9A (R value: the ratio of the strain in the plate width direction and the plate thickness direction that occurs when the steel plate is distorted by press forming or the like) is not limited, What is necessary is just to be able to form all the projections for mounting in the internal cabinet 9A with a diaphragm. Accordingly, the selection of the high R value steel sheet depends on the mounting projections formed on the internal cabinet 9A.

  In the metal cabinet 1A described above, the inner cabinet 9A having electronic parts attached to the mounting projections is positioned and fixed in the outer base cabinet 5A, and the inner surface side of the opening edge of the outer lid cabinet 3 is fitted to the connection surface 7. By doing so, it becomes a product including electronic parts such as home appliances, measurement and control devices. In this case, the outer lid cabinet 3 and the outer base cabinet 5A are flush with each other.

  According to the metal cabinet 1A of the present embodiment, since the internal cabinet 9A is made of a high R value steel plate and all the mounting protrusions are formed by a throttle, no burrs are generated, and the wiring in the metal cabinet 1A It is possible to prevent parts from being damaged and workers from being damaged during assembly and repair, and to improve the strength of the internal cabinet 9A.

  Further, according to the metal cabinet 1A of the present embodiment, the internal cabinet 9A is formed by drawing by forming a double-structure cabinet including the internal cabinet 9A to which electronic components are attached by the outer lid cabinet 3 and the outer base cabinet 5A. The depression formed on the surface is not exposed to the surface of the metal cabinet 1A, and the metal cabinet 1A having a good appearance can be formed.

  Further, the connection surface 7 can suppress unnecessary radiation by securing the engagement between the outer base cabinet 5A and the outer lid cabinet 3 and electrical conduction, and can prevent light leakage from the metal cabinet 1A. .

  In the above embodiment, the connection surface 7 is formed on the outer base cabinet 5A side for the purpose of engaging the outer lid cabinet 3 and the outer base cabinet 5A and forming a conduction path. However, the present invention is not limited to this. You may form in 3 side. Further, the connection surface 7 is not formed on the outer lid cabinet 3 or the outer base cabinet 5A, and the electrical connection between the outer lid cabinet 3 and the outer base cabinet 5A and the positioning of the outer lid cabinet 3 and the outer base cabinet 5A with a simpler configuration. A second embodiment enabling the above will be described below.

  A second embodiment of the electronic equipment cabinet of the present invention will be described with reference to FIGS. FIG. 2 is a perspective view illustrating the configuration of the metal cabinet according to this embodiment, FIG. 3 is a perspective view illustrating the assembly of the metal cabinet according to this embodiment, and FIG. It is a top view of the metal cabinet which concerns on a form, FIG.4 (b) is AA sectional drawing of Fig.4 (a), FIG.5 is an enlarged view in the round area | region B of FIG.4 (b). . Note that in the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and differences will be mainly described below.

  In the second embodiment, an external base cabinet 5B is used instead of the external base cabinet 5A, and an internal cabinet 9B is used instead of the internal cabinet 9A. In the first embodiment, the material of the outer lid cabinet 3 and the outer base cabinet 5A is not limited to metal, but may be a material other than metal such as plastic. In the present embodiment, the outer lid cabinet 3 and the outer base cabinet 5B The material is metal.

  The outer base cabinet 5B forms a flat upright side 7B without providing the connection surface 7 on the upright side 6A of the outer base cabinet 5A.

  The internal cabinet 9B has a fitting surface 17B in which the width (length) in the rising direction S (FIG. 2) of the fitting surface 17A of the internal cabinet 9A is elongated along the inner wall of the standing side 6B of the outer base cabinet 5B. . As shown in FIG. 3, the width of the fitting surface 17B in the standing direction S is such that the fitting surface is closer to the fitting surface than the end portion 19 of the outer base cabinet 5B in the standing direction S in a state where the inner cabinet 9B is attached to the outer base cabinet 5B. 17B is formed in a length that protrudes by an arbitrary predetermined protruding width X. And the area | region of the protrusion width X of the said fitting surface 17B becomes a fitting (engagement) surface engaged and fitted with the inner surface (non-coating surface) of the outer lid cabinet 3 (FIGS. 4 and 5).

  That is, the metal inner cabinet 9B is fitted and engaged over both inner side surfaces (non-painted surfaces) of the rising edge 6B of the outer lid cabinet 3 and the outer base cabinet 5B. It is the structure which forms the conduction path between them.

  According to the second embodiment described above, it is not necessary to form the connecting surface 7 that is recessed in the outer lid cabinet 3 or the outer base cabinet 5B. Since a complicated process such as creating a coating region or stripping the coating is not required, the outer lid cabinet 3 and the outer base cabinet 5B can be configured simply. In addition, the simple configuration that only lengthens the fitting surface 17B of the internal cabinet 9B makes it possible to suppress unnecessary radiation by positioning (assembling) the outer base cabinet 5B and the outer lid cabinet 3 and ensuring electrical continuity, and The light leakage from the metal cabinet 1B can be prevented.

  The electronic device cabinet of the present embodiment can be used for an electronic device cabinet that positions and positions electronic components therein, and an electronic device cabinet that suppresses unnecessary radiation. For example, home appliances, measurement, control devices, etc. The electronic component can be used for an internal part.

It is a perspective view explaining the structure of the cabinet for electronic devices which concerns on the 1st Embodiment of this invention. It is a perspective view explaining the structure of the cabinet for electronic devices which concerns on the 2nd Embodiment of this invention. It is a perspective view explaining the assembly of the cabinet for electronic devices which concerns on the 2nd Embodiment of this invention. It is the top view (a) of the cabinet for electronic devices which concerns on the 2nd Embodiment of this invention, and AA sectional drawing of (a). FIG. 5 is an enlarged view in a circle region B of FIG. It is a perspective view explaining the structure of the conventional cabinet for electronic devices. It is the top view (a) of the conventional cabinet for electronic devices, and CC sectional drawing (b) of a top view (a). FIG. 8 is an enlarged view in a circle region D in FIG.

Explanation of symbols

1A, 1B Electronic equipment cabinet 3 Outer lid cabinet 5A, 5B Outer base cabinet 6A, 6B Standing side 7 Connection surface 9A, 9B Internal cabinet 13 Boss 15 Base 17A, 17B Fitting surface 19 End X Projection width

Claims (2)

An electronic equipment cabinet for positioning and housing electronic components,
A metal internal cabinet for positioning the electronic component;
An external cabinet that houses the internal cabinet;
Have
The mounting projections for mounting the electronic components of the internal cabinet are all formed by drawing ,
The outer cabinet has an outer base cabinet with a U-shaped cross-section standing up the entire edge portion for positioning the internal cabinet, and an inverted U-shaped cross-section with the entire edge standing up to close the opening of the outer base cabinet. An outer lid cabinet,
The outer base cabinet and the outer lid cabinet are electrically insulated on the outer surface and electrically conductive on the inner surface,
When the inner cabinet is formed with a fitting surface that allows the entire edge to be fitted to the inner surface of the outer base cabinet by surface contact, and the inner cabinet is attached to the outer base cabinet. The inner surface of the standing side of the outer base cabinet and the fitting surface of the inner cabinet are fitted and positioned and fixed, and are electrically connected.
The outer base cabinet has a connection surface that is recessed in one step in the shape of a bowl on the entire outer surface of the open side of the standing side, and the connection surface is electrically conductive, and the outer lid cabinet is connected to the outer base cabinet. An electronic equipment cabinet , wherein when mounted on a cabinet, the inner side surface of the upright side of the outer lid cabinet is electrically connected to the connection surface of the outer base cabinet. An electronic equipment cabinet for positioning and housing electronic components,
A metal internal cabinet for positioning the electronic component;
A metal external cabinet that houses the internal cabinet;
Have
The mounting projections for mounting the electronic components of the internal cabinet are all formed by drawing,
The outer cabinet has an outer base cabinet with a U-shaped cross-section standing up the entire edge portion for positioning the internal cabinet, and an inverted U-shaped cross-section with the entire edge standing up to close the opening of the outer base cabinet. An outer lid cabinet,
The outer base cabinet and the outer lid cabinet are coated for electrical insulation on the outer surface, and the inner surface is unpainted and electrically conductive,
The inner cabinet is formed with a fitting surface that allows the entire edge of the inner cabinet to be fitted to the inner surface of the outer base cabinet by surface contact, and the width of the fitting surface in the standing direction is equal to that of the outer base cabinet. Formed in a length protruding from the end of the outer base cabinet in the attached state,
When the inner cabinet is attached to the outer base cabinet, the inner side surface of the outer base cabinet and the fitting surface of the inner cabinet are fitted and electrically connected,
When the outer lid cabinet is attached to the outer base cabinet, the inner side surface of the rising side of the outer lid cabinet and the protruding portion of the fitting surface of the inner cabinet are fitted and electrically connected. Cabinet for electronic equipment.

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