JP2010199123A - Box for storing electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve conduction between a lid part and a case body by a simple structure, and to improve assembly properties and maintainability. <P>SOLUTION: A box for storing an electronic apparatus includes: the case body 1 which is painted, metallic, and formed in a hollow box type having one surface made open to store the electronic apparatus; and the lid part 2 to which the electronic apparatus is fitted, and which is painted, is metallic, and rotatably covers the opening 1a of the case body 1 by a hinge structure. The hinge structure comprises: a first shaft cylinder 31a which is formed on the case body 1; a second shaft cylinder 32a which is formed on the lid part; and a pin 33A which is metallic and inserted into the first and second shaft cylinders 31a and 32a to pivotally support the first and second shaft cylinders 31a and 32a. The pin 33A is provided with a conduction means which performs conduction to the second shaft cylinder 32a, and is further provided with a first spring material 35A which is metallic, has elastic force in a circumferential direction and axial direction of the pin 33A, and comes into contact with an inner-diameter part of the first shaft cylinder 31a to peel off paint and then come into contact with a metallic part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electronic device storage box.

  Conventionally used electronic equipment storage boxes include a metal case body that is open on one side, a metal lid that is pivotally covered by an opening on the case body with a hinge, and is housed in the case body. There is a distribution board provided with an electronic device such as an operable breaker (see, for example, Patent Document 1).

  Conventionally, only the case main body is grounded, and the electronic device housed in the case main body is grounded to the metal portion of the case main body.

  In recent years, there has been a demand to attach an electronic device such as a display to the lid. In that case, the electronic component provided on the lid is electrically connected to the metal portion of the lid, and further via a lead wire. By connecting the metal part of the lid part to the metal part of the case body, the electronic component attached to the lid part is grounded.

  However, because the lead wire is provided separately, the lead wire is exposed when the lid is opened, and it looks bad, or when opening and closing the lid, the lead wire is placed between the case body and the lid. There were problems such as the possibility of pinching.

  As shown in FIG. 7, the hinge 3 is generally supported by a hinge bracket 31 fixed to the case body 1 and a hinge bracket 32 fixed to the lid 2 through a pin 36 and pivotally supported. However, since the contact state between the pin 36 and the hinge fittings 31 and 32 is unstable, it is difficult to secure a stable conduction state between the hinge fittings 31 and 32 by the pin 36. It was.

  Therefore, as an example of an electronic equipment storage box that can perform stable ground connection to the lid without separately providing a lead wire, a conductive metal fitting is attached to the hinge connecting the case body and the lid by screwing. There are some (see, for example, Patent Document 2).

  The hinges to which the conductive metal fittings are attached are fixed to the case main body and electrically connected to the case main body, the case side hinge metal fittings fixed to the lid portion and electrically connected to the lid portion, and the respective hinge metal fittings. There are provided a pin through which the shaft tube is inserted and a conduction fitting fixed to each hinge fitting by screwing. Here, the screw that secures the conductive fitting is inserted into the hinge fitting screw hole after the paint film of the insertion hole formed in the hinge fitting is removed, and then screwed into the screw hole of the hinge fitting. I am letting.

  Furthermore, since the conducting metal fitting is fixed in a state where it is in contact with the pin when it is fixed to the hinge fitting, the conducting metal fitting also conducts with the pin.

  Therefore, the hinge to which the conductive metal fitting is attached connects the case main body and the lid portion via the conductive metal fitting and the pin, thereby realizing a stable ground connection of the lid portion.

  In addition, as another example of an electronic device storage box that can perform stable ground connection of the lid without separately providing a lead wire, the pin of the hinge that connects the case body and the lid is connected to the pin. There is one in which a plurality of coil springs having elastic force in the circumferential direction are attached (for example, see Patent Document 3).

  And the hinge with the coil spring attached to the pin is fixed to the case main body and connected to the case main body, the case side hinge metal fitting, and the lid side hinge metal fitting fixed to the cover and electric conduction to the cover portion, A pin that is inserted through the shaft of the hinge metal fitting, and an annular coil spring that is inserted into the pin, is electrically connected to the pin, and has an elastic force in a circumferential direction of the pin. Here, the coil spring is provided in contact with the inner diameter portion of the shaft cylinder of each hinge metal fitting, and when the lid portion rotates, the coating on the inner diameter portion of the shaft cylinder of each hinge metal fitting is scraped off. Each hinge fitting is made conductive by contacting the part.

  Therefore, the hinge provided with the pin provided with the coil spring allows the case main body and the lid portion to conduct through the coil spring and the pin, thereby realizing a stable ground connection of the lid portion.

Japanese Utility Model Publication No. 3-106804 JP 2005-294299 A Japanese Utility Model Publication No. 5-578799

  However, the electronic device storage box in which the conductive metal fitting is attached to the hinge has a problem in that the structure is complicated and man-hours are required because screwing is required when assembling the conductive metal fitting.

  In addition, the electronic equipment storage box in which the coil spring is attached to the hinge pin has an elastic force only in the circumferential direction of the pin, so that the pin is inserted into the inner diameter portion of the shaft cylinder when assembled. In addition, it is difficult to pull out the pins during maintenance, and the assembling and maintenance are poor.

  The present invention has been made in view of the above-mentioned reasons, and an object of the present invention is to provide an electronic device storage box that realizes electrical connection between the lid and the case body with a simple structure, and has improved ease of assembly and maintainability. There is to do.

  According to the first aspect of the present invention, a metal case main body formed in a hollow box shape having an opening on one side and housing an electronic device, at least the surface of which is coated, and the electronic device are attached. And a metal lid with a coating on at least the surface thereof, which is rotatably covered in the opening of the case body, and the hinge structure is a first formed on the case body. It is composed of a shaft tube, a second shaft tube formed on the lid, and a metal pin that supports the first and second shaft tubes through the first and second shaft tubes, The pin is in contact with either the first shaft tube or the second shaft tube, and is provided with conduction means for conducting to the one shaft tube, and further elastic in the circumferential direction and the axial direction. A metal first spring material that has a force and abuts against the inner diameter portion of the other shaft cylinder is provided. To.

  According to this invention, without using a lead wire for conducting the lid portion and the case main body, the conduction between the lid portion and the case main body is realized with a simple structure, and the pin to which the first spring material is attached Can be easily inserted into the first and second shaft cylinders, and the pins can be easily detached from the first and second shaft cylinders, so that the assembling property and the maintainability can be improved.

  Therefore, electrical conduction between the lid and the case main body can be realized with a simple structure, and assembling and maintenance can be improved.

  According to a second aspect of the present invention, in the first aspect of the invention, the other shaft tube is coated to the inner diameter portion, and the first spring material is in contact with the other shaft tube when the lid portion is rotated. It is characterized by scraping off the coating of the inner diameter portion of the metal plate and contacting the metal portion.

  According to the present invention, the conduction between the lid portion and the case body can be realized with a simple structure, the assembling property and the maintenance property can be improved, and the coating enters the inner diameter portion of the other shaft tube. Even in the case where the cover is closed, the first spring material is brought into contact with the inner diameter portion, and the coating is scraped off and brought into contact with the metal portion, whereby conduction between the lid portion and the case main body can be achieved.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the first spring material is formed in an arc shape with respect to the axial direction of the pin.

  According to this invention, the pin to which the first spring material is attached can be easily inserted into the first and second shaft cylinders, and the pin can be easily removed from the first and second shaft cylinders. As a result, assembly and maintenance can be improved.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the pin is made of a metal having an elastic force in a circumferential direction and an axial direction of the pin and abutting against an inner diameter portion of one shaft cylinder. The electronic device storage box according to claim 1, wherein a second spring material is provided.

  According to this invention, when the pin is assembled, after the coating of the inner diameter portion of one shaft cylinder is scraped off by the first spring material, the second spring material further coats the inner diameter portion of one shaft cylinder. By scraping and abutting, the pin and one shaft tube can be reliably connected.

  As described above, according to the present invention, there is an effect that conduction between the lid portion and the case main body can be realized with a simple structure, and assembling property and maintenance property can be improved.

The expanded sectional view of the principal part of the electronic device storage box in Embodiment 1 of this invention is shown. The front view which fractured | ruptured partially the electronic equipment storage box same as the above is shown. Sectional drawing of the principal part of the electronic device storage box in the same as above is shown. (A), (b) shows the front view and bottom view of a pin with which the electronic device storage box in the same is provided. (A), (b) shows the front view and bottom view of a 1st spring material with which the electronic device storage box in the same as the above is provided. The expanded sectional view of the principal part of the electronic device storage box in Embodiment 2 of the present invention is shown. The expanded sectional view of the principal part of the electronic device storage box in a prior art example is shown.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 to 3, the electronic device storage box A of the present invention is connected to the case main body 1 by a hinge main structure and a case main body 1 whose front surface is open, and is rotatable to the opening 1 a of the case main body 1. A cover 2 for covering and a hinge 3 forming the hinge structure are provided. In the following description, the vertical and horizontal directions in FIG.

  The case body 1 is formed from a metal material into a hollow box shape having a substantially rectangular opening 1a on the front surface, and the surface is painted.

  The lid 2 is formed in a substantially rectangular flat plate shape from a metal material, and the surface thereof is painted.

  The hinge 3 includes a first hinge 31 fixed to a hinge bracket attachment portion 11 having a substantially L-shaped cross-section that extends forward from the upper end of the periphery of the opening 1a and is bent upward. A second hinge bracket 32 having a second shaft cylinder 32a fixed to the upper end of the rear surface of the portion 2 and disposed at a position substantially coaxial with the first shaft cylinder 31a of the first hinge bracket 31; The first and second shaft cylinders 31a and 32a are inserted through and supported by metal pins 33A.

  Here, the first hinge metal 31 is fixed to the attachment portion 11 by welding and is electrically connected to the case body 1.

  The second hinge 32 has a pair of second shaft cylinders 32a, and the distance between the pair of second shaft cylinders 32a is set such that the first shaft cylinder 31a can be inserted. Yes. The second hinge metal 32 is fixed to the lid 2 by welding and is electrically connected to the lid 2.

  In the present embodiment, when the case main body 1 and the lid portion 2 are coated, it is assumed that the coating enters the inner diameter portions of the first and second shaft cylinders 31a and 32a from the opening. .

  As shown in FIG. 4, the pin 33A is a so-called headed pin, and includes a pin portion 331A and a head portion 332 formed on one end side of the pin portion 331A. A plurality of substantially triangular pyramidal protrusions 331a projecting from the seating surface of the head 332 along the axial direction of the pin portion 331A are formed at intervals of approximately 90 degrees in the circumferential direction of the pin portion 331A. As the protrusion 331a moves away from the head 332, the amount of protrusion decreases.

  Further, a groove portion 331b is formed in the circumferential direction on the other end side of the pin portion 331A. After the pin 33A is inserted through the first and second shaft cylinders 31a and 32a, the C ring 34 is fitted into the groove portion 331b. This prevents the pin 33A from coming off. Furthermore, a concave portion 331c is formed in the circumferential direction substantially at the center in the axial direction of the pin portion 331A, and the first spring material 35A is attached to the concave portion 331c.

  As shown in FIG. 5, the first spring member 35 </ b> A includes a plurality of spring portions 35 a made of a metal material and formed in a substantially arc shape with the center portion swelled most with respect to the axial direction of the pin 33 </ b> A. And a pair of fixing portions 35b having a substantially C-shaped cross section that are connected to each other through a spring portion 35a and are fitted into the recess 331c of the pin 33A. Here, since the spring portion 35a is formed in a substantially tall shape that swells in the circumferential direction of the pin 33A, it has an elastic force in the circumferential direction of the pin 33A, and further, the shaft of the pin 33A. Since it is formed in a substantially arc shape along the direction, it also has an elastic force in the axial direction of the pin 33A.

  When the pin 33A is inserted and assembled through the first and second shaft cylinders 31a and 32b, the protrusion 331a contacts the opening side of the inner diameter portion of the second shaft cylinder 32a, and The second shaft cylinder 32a and the pin 33A are electrically connected by scraping off the coating on the inner diameter portion and contacting the metal portion. Here, since the protrusion 331a is formed in a substantially triangular shape, the protrusion 331a can smoothly contact the inner diameter portion of the second shaft cylinder 32a, and the coating of the inner diameter portion can be surely scraped off. .

  Further, since the first spring member 35A has an elastic force with respect to the circumferential direction of the pin 33A, the inner diameter portion of the first shaft cylinder 31a that abuts when the lid portion 2 rotates. The first shaft cylinder 31a and the pin 33A are electrically connected to each other by scraping off the coating and contacting the metal part.

  Accordingly, the first shaft cylinder 31a and the second shaft cylinder 32a are electrically connected via the pin 33A and the first spring member 35A, so that the lid portion 2 → the second shaft cylinder 32a → the projecting portion 331a → the pin. It is possible to achieve conduction between the lid 2 and the case body 1 through the path of the portion 331 </ b> A → the first spring material 35 </ b> A → the first shaft cylinder 31 a → the case body 1.

  Further, since the spring portion 35a of the first spring member 35A has an elastic force also in the axial direction of the pin 33A, the pin 33A can be smoothly moved to the first and second shaft cylinders 31a and 32a. In addition to being able to be inserted, the lid 2 can be easily attached to or detached from the case main body 1 since it can be pulled out smoothly when it is pulled out.

  Therefore, the electronic device storage box A of the present embodiment can realize the electrical connection between the lid 2 and the case body 1 with a simple structure, and can improve the assembling property and the maintenance property.

(Embodiment 2)
The difference between the present embodiment and the first embodiment is that a second spring member 35B is provided on the pin portion 331B of the pin 33B. In addition, about the structure which is common in Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted. The second spring material 35B has the same configuration as the first spring material 35A.

  As shown in FIG. 6, the pin 33B is a so-called headed pin, and includes a pin portion 331B and a head portion 332 formed on one end side of the pin portion 331B. A plurality of substantially triangular pyramidal protrusions 331a projecting along the axial direction of the pin portion 331B from the seating surface of the head portion 332 are formed at intervals of approximately 90 degrees in the circumferential direction of the pin portion 331B. As the protrusion 331a moves away from the head 332, the amount of protrusion decreases.

  Further, a groove portion 331b is formed in the circumferential direction on the other end side of the pin portion 331B. After the pin 33B is inserted through the first and second shaft cylinders 31a and 32a, the C ring 34 is fitted into the groove portion 331b. This prevents the pin 33B from coming off. Further, at the substantially center and one end side in the axial direction of the pin portion 331B, concave portions 331c and 331d are respectively formed in the circumferential direction, and the first spring member 35A and the second spring member 35B are formed in the concave portions 331c and 331d, respectively. Each is attached.

  When the pin 33B is inserted and assembled into the first and second shaft cylinders 31a and 32b, first, the first spring material 35A is inserted into the inner diameter portion of the second shaft cylinder 32a, and the lid portion 2 is inserted. The first spring member 35A scrapes off the coating on the inner diameter portion of the second shaft cylinder 32a. After that, by inserting the first spring member 35A into the inner diameter portion of the first shaft cylinder 31a, the first spring material 35A comes into contact with the inner diameter portion of the first shaft cylinder 31a and the coating is scraped off. By contacting the metal part, the first shaft cylinder 31a and the pin 33A are electrically connected.

  Further, when the first spring member 35A comes into contact with the inner diameter portion of the first shaft cylinder 31a, the protrusion 331a scrapes off the paint on the opening side of the second shaft cylinder 32a and comes into contact with the second shaft cylinder 31a. The second spring cylinder 32a and the pin 33B are electrically connected to each other by the contact of the spring material 35B with the inner diameter portion of the second shaft cylinder 32a whose coating has been scraped off by the first spring material 35A.

  Therefore, when the first shaft cylinder 31a and the second shaft cylinder 32a are electrically connected via the pin 33B and the first and second spring members 35A and 35B, the lid portion 2 → the second shaft cylinder 32a → The lid 2 and the case body 1 can be electrically connected through the path of the protrusion 331a and the second spring material 35B → the pin portion 331A → the first spring material 35A → the first shaft cylinder 31a → the case body 1. .

  Further, the inner diameter portion of the second shaft cylinder 32a is scraped off by the first spring material 35A, and the second spring material 35B contacts and scrapes when the coating is not sufficiently scraped off. By providing the two-stage scraping process, the second shaft cylinder 32a and the pin 33B can be more reliably connected.

  In addition, even if the pin 33 moves in the axial direction and the protrusion 331a is separated from the second shaft cylinder 32a, the second spring member 35b and the second shaft cylinder 32a maintain conduction. Thus, the conductive state between the pin 33 and the second shaft cylinder 32a can be maintained.

DESCRIPTION OF SYMBOLS 1 Case main body 1a Opening 2 Cover part 3 Hinge 31 1st hinge metal fitting 31a 1st axial cylinder 32 2nd hinge metal fitting 32a 2nd axial cylinder 33A Pin 35A 1st spring material

Claims (4)

A metal case body that is formed in a hollow box shape with one side open and houses electronic equipment, and at least the surface is coated;
An electronic device is attached, and is connected to the case main body by a hinge structure, and is provided so as to be pivotably covered by the opening of the case main body.
The hinge structure includes a first shaft tube formed on the case body, a second shaft tube formed on the lid portion, and the first and second shaft tubes. It consists of a metal pin that supports the shaft cylinder,
The pin is in contact with either the first shaft tube or the second shaft tube, and is provided with conduction means for conducting to the one shaft tube, and further elastic in the circumferential direction and the axial direction. An electronic device storage box, characterized in that a metal first spring material that has a force and abuts against an inner diameter portion of the other shaft cylinder is provided.   The other shaft cylinder is coated to the inner diameter portion, and the first spring material abuts on the metal portion by scraping the coating of the inner diameter portion of the other shaft cylinder that is in contact with the rotation of the lid portion. The electronic device storage box according to claim 1.   The electronic device storage box according to claim 1, wherein the first spring material is formed in an arc shape with respect to an axial direction of the pin. The said pin is provided with the metal 2nd spring material which contact | abuts to the internal diameter part of one axial cylinder while having an elastic force in the circumferential direction and axial direction of a pin. An electronic device storage box.

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