JP3746461B2 - Enclosure for electronic equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a casing for electronic equipment having a shield structure that shields electromagnetic waves from the outside or the outside.
[0002]
[Prior art]
FIG. 6 is a perspective view showing an example of a conventional electronic device casing.
As shown in FIG. 6, the conventional electronic device casing mainly includes a case main body 51, an upper cover 52, a front plate 53, and a rear plate 54. The case main body 51 has a bottom plate 51a and both inner side plates 51b, and has a substantially U-shaped cross section with the front side, the rear side, and the upper side opened. A substrate 55 is accommodated inside the case body 51.
[0003]
The upper cover 52 has a top plate 52a and both outer plates 52b, and has a substantially U-shaped cross section with the front side, the rear side, and the bottom side opened. The upper cover 52 has an outer plate 52b attached to the outer surface of each inner plate 51b of the case main body 51 so that the upper side of the case main body 51 is covered with the top plate 52a, and each inner plate 51b and each outer plate 52b. Is attached to the case main body 51 by screwing. Thus, the front side and the rear side are opened by the attachment of the upper cover 52 to the case main body 51.
[0004]
The front plate 53 closes a front opening formed by attaching the upper cover 52 to the case body 51. The front plate 53 is provided with an insertion hole 53a into which the substrate 55 is inserted. The substrate 55 has a front panel 55 a that closes the insertion hole 53 a when accommodated in the case main body 51.
[0005]
The rear plate 54 closes the rear opening formed by attaching the upper cover 52 to the case main body 51. The rear plate 54 is provided with a connection connector 54 a to which a connector 55 b provided on a substrate 55 accommodated in the case main body 51 is connected.
[0006]
The front opening portion and the rear opening portion formed by the case main body 51 and the upper cover 52 are provided with shield structures that shield electromagnetic waves from the outside or the outside. In this shield structure, shield springs 56 are attached to the inner edge of the front opening and the inner edge of the rear opening. The shield spring 56 contacts the front plate 53 and the rear plate 54 with its elastic force when the front plate 53 and the rear plate 54 are attached. A shield spring 56 that contacts the front panel 55 a is attached to the insertion hole 53 a of the front plate 53. Thereby, a shield is formed in each part to prevent noise emission.
[0007]
[Problems to be solved by the invention]
However, in the above-described conventional electronic device casing, the shield structure between the front opening portion formed by the case main body 51 and the upper cover 52 and the front plate 53, the insertion hole 53a of the front plate 53, and the substrate 55 are provided. Since a shield structure between the front panel 55a and the front panel 55a is required, the number of parts for shielding increases, which increases the number of manufacturing steps and the manufacturing cost.
[0008]
Further, in a conventional electronic device casing, the inside of the casing is configured to be hollow, and the strength is entrusted by the sheet metal of the case main body 51, the upper cover 52, the front plate 53, and the rear plate 54 that form the outer shape of the casing. Therefore, there is a problem that sufficient strength cannot be obtained. In particular, in recent years, electronic devices have been made thinner, and the bottom plate 51a and the top plate 52a are formed wider than the height formed by the inner plate 51b and the outer plate 52b. Strength will fall.
[0009]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a casing for an electronic device that can simplify the shield structure and obtain sufficient strength in order to solve the above problems.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, an electronic device casing according to claim 1 according to the present invention is provided.
A case main body 1 having inner plates 7 erected opposite to both ends of the bottom plate 6 and having front, rear and upper sides opened;
Each of the outer plates 20 has an outer plate 20 standing opposite to both ends of the top plate 19 and a front plate 21 on the front side of the top plate 19. The rear and bottom sides are open. Are attached to the outer surface of each inner plate 7, the top plate 19 closes the upper opening of the case body 1, and the front plate 21 closes the front opening of the case body 1; ,
A beam 8 erected on the bottom plate 6 so as to be connected between the inner plates 7 of the case body 1;
A front panel 29 and a substrate 27 are provided, and the front panel 29 is provided on one end side of the substrate 27, and is inserted into the case body 1 from an insertion hole 21 a formed in the front plate 21 of the upper cover 1. A circuit unit 3 that is inserted and closes the insertion hole 21a;
A power supply unit 4 that is inserted into the case main body 1 from the rear opening formed by the case main body 1 and the upper cover 2 and supplies power to the circuit unit 3;
Between the upper end of each inner plate 7 and the top plate 19, between the upper end of the beam member 8 and the top plate 19, between the top plate 19 and the front panel 29, the bottom plate 6 and the A shield member 16 disposed between the front panel 29 and surrounding the circuit unit 3, respectively.
It is provided with.
[0011]
The electronic device casing according to claim 2 is the electronic device casing according to claim 1,
The beam 8 has a circuit-side connector 9a to which the circuit unit 3 is connected and a power-side connector 9b to which the power unit 4 is connected.
[0012]
The electronic device casing according to claim 3 is the electronic device casing according to claim 1 or 2,
The beam member 8 has a ventilation hole portion 8d for ventilating from the circuit unit 3 to the power supply unit 4 through a cooling fan 36b disposed in the power supply unit 4. .
[0013]
The electronic device casing according to claim 4 is the electronic device casing according to any one of claims 1 to 3,
The ventilation hole 8d of the beam member 8,
A slit hole 17 provided at the upper end of the beam member 8;
The shield member 16 is inserted and attached.
[0014]
The electronic device casing according to claim 5 is the electronic device casing according to any one of claims 1 to 4,
The ventilation hole 8d of the beam member 8,
A locking piece 22a provided on the top plate 19 of the upper cover 2 and inserted and locked into the ventilation hole 8d;
It is provided with.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be specifically described below with reference to the drawings.
FIG. 1 is a perspective view showing a case main body of an electronic device casing of the present invention, FIG. 2 is a perspective view showing an upper cover of the electronic device casing, and FIG. 3 shows a circuit unit in the electronic device casing. FIG. 4 is a perspective view showing a power supply unit in the electronic device casing, and FIG. 5 is a cross-sectional view showing an assembled state of the electronic device casing.
[0016]
As shown in FIGS. 1 to 5, the electronic device casing in the present embodiment is mainly composed of a case main body 1 and an upper cover 2, and a circuit unit 3 and a power supply unit 4 are housed therein. .
[0017]
First, as shown in FIG. 1, the case body 1 is made of sheet metal, and has inner plates 7 that are vertically bent at both ends of the bottom plate 6 and face each other. The upper side is substantially U-shaped in cross section. In the middle of the upper surface of the bottom plate 6, a beam member 8 made of sheet metal is erected. The beam member 8 has a substantially U-shaped cross section that opens to the rear side, is formed in a longitudinal shape on both sides, and is formed between the inner plates 7 so as to be continuous between the inner plates 7 through the horizontal lower piece 8a. It is fixed on the top surface. Thus, a vertical standing piece 8b that is provided between the inner plates 7 and divides the bottom plate 6 into a front side and a rear side, and a horizontal upper piece 8c that is bent at the upper end of the standing piece 8b. Is formed. In addition, a plurality of rectangular ventilation holes 8d are formed along the longitudinal direction on the upper end side of the vertical standing piece 8b of the beam member 8.
[0018]
A connecting substrate 9 is fixed to the beam member 8. The connection substrate 9 has a circuit side connection connector 9a on one surface and a power supply side connection connector 9b on the other surface. The connection board 9 is fixed to the rear side of the standing piece 8b of the beam member 8, and the circuit side connection connector 9a is exposed to the front side of the standing piece 8b through a hole formed in the standing piece 8b. The connection connector 9b is exposed to the rear side of the upright piece 8b. The connection board 9 electrically connects the circuit side connection connector 9a and the power supply side connection connector 9b at the beam member 8 portion to which the circuit board connection connector 9a is fixed.
[0019]
Further, a partition portion 10 is provided on the upper surface of the bottom plate 6 so as to be parallel to the inner plate 7 and orthogonal to the beam member 8. The partition 10 divides the bottom plate 6 on both sides. The beam member 8 is integrated with the left and right, and the partition 10 is divided into front and rear. The connection board 9 is integrated with the left and right like the beam member 8, and has a circuit side connection connector 9a and a power supply side connection connector 9b on the left and right sides, respectively, with the partition portion 10 therebetween. The connection board 9 electrically connects the left and right circuit side connection connectors 9a and the left and right power supply side connection connectors 9b.
[0020]
Further, a stepped portion 11 that is bent so as to have a flat upper surface at a position slightly above the upper surface of the bottom plate 6 is formed at the front end portion of the bottom plate 6 so as to be elongated in the lateral direction.
[0021]
At the upper end of each inner plate 7, an upper piece 7 a that is bent horizontally so as to face each other is formed. The upper piece 7 a is formed so as to cover the upper surfaces of both end portions of the upper piece 8 c of the beam member 8. Each inner plate 7 has a ventilation hole 7b.
[0022]
A locking piece 12 is provided on the upper piece 7 a and the partition 10 of each inner plate 7. The locking piece 12 is extended to the front side at each of the front end portions on the upper side of the upper piece 7a and the partitioning portion 10. In addition, the locking piece 12 is extended at the rear end portion on the upper side of the partition portion 10 to the front side in the drilled hole portion.
[0023]
A plurality of upper and lower guide pieces 13 are provided along the front-rear direction on the inner surface of each inner plate 7 and on each surface of the partitioning portion 10 facing the inner surface of each inner plate 7. The guide piece 13 is formed by notching and bending the sheet metal of the inner plate 7.
[0024]
A fixing piece 14 formed by bending a sheet metal is formed at the front end portion and the rear end portion of each inner plate 7 and the partition portion 10.
[0025]
The case body 1 formed as described above is provided with a shield structure that shields electromagnetic waves from or to the outside. Specifically, a plurality of pieces are arranged on the upper piece 7 a of each inner plate 7, the upper piece 8 c of the beam member 8, and the upper surface of the step portion 11. In this shield structure, a substantially C-shaped shield spring 16 (shield member) is attached to each of the pair of slit holes 15 on the upper piece 7a of each inner plate 7 and the upper surface of the step portion 11, and attached to each opening end. It has been. Further, the upper piece 8c of the beam member 8 has a slit hole 17 corresponding to the ventilation hole 8d, and a substantially C-shaped shield spring 16 is formed with respect to the upper end edge and the slit hole 17 of the ventilation hole 8d. Each open end is inserted and attached. As a result, a plurality of shield springs 16 are provided in a substantially U-shape that continues from the front end of the upper piece 7 a of the inner plate 7 to the upper piece 8 c of the beam member 8 and shields along the upper surface of the step portion 11 at the front end of the bottom plate 6. A plurality of springs 16 are provided.
[0026]
Next, as shown in FIG. 2, the upper cover 2 is made of sheet metal, has an outer plate 20 erected facing both ends of the top plate 19, has a substantially U-shaped cross section, and has a top. A front plate 21 is provided on the front side of the plate 19, and the rear side and the bottom side are opened. A locking portion 22 made of sheet metal is provided in the middle of the lower surface of the top plate 19. The locking part 22 has a plurality of locking pieces 22a that are formed in a longitudinal shape on the side and extend to the rear side along the longitudinal direction.
[0027]
In addition, a locking portion 23 having a locking hole 23 a is formed in a hanging manner at the center of the rear end portion of the top plate 19.
[0028]
Further, a stepped portion 24 having a flat lower surface at a position slightly below the lower surface of the top plate 19 is formed in the front end portion of the top plate 19 so as to be elongated in the lateral direction. Further, on the rear side of the stepped portion 24, locking holes 24a are formed at the positions of the center and each end portion in the longitudinal direction.
[0029]
Each outer plate 20 is provided with a vent hole 20a corresponding to the vent hole 7b provided in each inner plate 7 of the case body 1.
[0030]
The front plate 21 has an insertion hole 21a. A circuit unit 3 to be described later is inserted into the insertion hole 21a. The insertion hole 21a in the present embodiment is provided at two locations according to the front side of the portion divided by the partitioning portion 10 in the case main body 1. A locking piece 21b that is bent horizontally is formed at the lower end of the front plate 21.
[0031]
The upper cover 2 formed as described above is provided with a shield structure that shields electromagnetic waves from the outside or the outside. Specifically, a plurality of portions are arranged on the lower surface of the step portion 24. In this shield structure, a substantially C-shaped shield spring 16 (shield member) is attached to each of the pair of slit holes 25 on the lower surface of the stepped portion 24 by inserting each open end.
[0032]
Next, as shown in FIG. 3, the circuit unit 3 is provided with a connector 28 connected to a circuit side connection connector 9 a provided on the beam member 8 of the case body 1 at the rear end portion of the substrate 27. . A front panel 29 that closes the insertion hole 21 a of the front plate 21 of the upper cover 2 is provided at the front end of the substrate 27. The front panel 29 is made of sheet metal, and is formed in a substantially U-shaped cross section having upper and lower pieces 29a and 29b so as to open to the rear side, and is formed in a longitudinal shape on the side. On the front side of the front panel 29, various connectors 30a and LED display portions 30b arranged on the substrate 27 are exposed. Further, fixing screws 31 are arranged at both ends of the front panel 29 in the longitudinal direction.
[0033]
Next, as shown in FIG. 4, the power supply unit 4 is provided with a connector 33 that is connected to a power supply side connection connector 9 b provided on the beam member 8 of the case body 1 at the front end portion of the substrate 32. The substrate 32 is provided with a shield case 34 that shields electromagnetic waves from the outside or the outside with the front edge and side edges of the substrate 32 exposed. A power supply unit (not shown) is accommodated in the shield case 34. On the front side of the shield case 34, a ventilation hole 34a is formed. The rear side of the shield case 34 forms a rear panel 35. On the rear surface of the rear panel 35, various connectors 36a and cooling fans 36b arranged on the substrate 32 are exposed. Further, fixing screws 37 are arranged at both ends of the rear panel 35 in the longitudinal direction.
[0034]
In order to assemble the electronic device casing having the above-described configuration, first, the outer plates 20 of the upper cover 2 are attached to the outer sides of the inner plates 7 of the case body 1 so as to cover the upper cover 2 from the upper side of the case body 1. Make it. At this time, the upper cover 2 is slightly shifted to the front side with respect to the case body 1.
[0035]
Next, the shifted upper cover 2 is moved to the rear side. As a result, as shown in FIG. 5, the locking pieces 22 a of the locking portions 22 provided on the top plate 19 are inserted into the ventilation holes 8 d provided in the beam member 8 of the case body 1, thereby The upper edge of the hole 8d is locked. Further, each locking hole 24 a provided in the stepped portion 24 is inserted and locked into each locking plate 12 provided in each inner plate 7 of the case body 1 and the front end portion of the partitioning portion 10. Further, the locking portion 23 suspended from the rear end portion of the top plate 19 is inserted into a hole formed in the rear end portion of the partition portion 10 of the case body 1, while the locking hole 23 a is a locking piece. 12 is inserted and locked. Further, the locking piece 21 b at the lower end portion of the front plate 21 is locked downward to the step portion 11 of the bottom plate 6.
[0036]
Next, the case main body 1 and the upper cover 2 are assembled by screwing the outer side plate 20 to the inner side plate 7, and a hollow portion whose rear side is opened is formed. At this time, as shown in FIG. 5, the shield springs 16 provided on the upper piece 7 a of the inner plate 7 and the upper piece 8 c of the beam member 8 are in elastic contact with the lower surface of the top plate 19. Further, the vent hole 20 a of the outer plate 20 is overlapped with and communicated with the vent hole 7 b of the inner plate 7.
[0037]
Next, the circuit unit 3 is attached. The circuit unit 3 is inserted from the rear end side into the insertion hole 21 a provided in the front plate 21 of the upper cover 2. In the circuit unit 3, the side edge of the substrate 27 is guided and inserted by the guide pieces 13 provided on the inner plates 7 and the partition portion 10 of the case body 1. Then, as shown in FIG. 5, the connector 28 is connected to the circuit side connection connector 9 a provided on the beam member 8 of the case body 1. In the circuit unit 3, the front panel 29 is fitted into the insertion hole 21 a of the front plate 21 to close the insertion hole 21 a. At this time, the upper and lower pieces 29 a and 29 b of the front panel 29 are in elastic contact with the shield springs 16 provided on the step 24 of the upper cover 2 and the step 11 of the case body 1, respectively. The circuit unit 3 is fixed to the case body 1 by screwing the fixing screws 31 provided on the front panel 29 to the fixing pieces 14 at the front end of the case body 1.
[0038]
Next, the power supply unit 4 is attached. The power supply unit 4 is inserted from the front end side with respect to the rear opening formed by the case body 1 and the upper cover 2. The power supply unit 4 is inserted with the side edges of the substrate 32 being guided by the guide pieces 13 provided on the inner plates 7 and the partition portion 10 of the case body 1. Then, as shown in FIG. 5, the connector 33 is connected to the power supply side connection connector 9 b provided on the beam member 8 of the case body 1. In the power supply unit 4, the rear panel 35 closes the rear opening. Then, the power supply unit 4 is fixed to the case body 1 by screwing a fixing screw 37 provided on the rear panel 35 to the fixing piece 14 at the rear end portion of the case body 1. At this time, the ventilation hole 34 a of the shield case 34 faces the ventilation hole 8 d of the beam member 8.
[0039]
In the electronic device casing assembled in this manner, the upper cover 2 integrally includes the front plate 21, so that it is not necessary to provide a shield structure according to the front plate 21. Thus, on the front side, it is only necessary to provide a shield structure that shields the front panel 29 portion of the circuit unit 3 by providing the shield springs 16 at the respective step portions 11 and 24, and the number of parts for shielding is reduced. Therefore, the number of manufacturing steps and the manufacturing cost can be reduced.
[0040]
Further, in the seal structure, since the shield spring 16 is provided so as to surround the circuit unit 3 by the inner plate 7 and the beam member 8 of the case body 1 and the step portion 24 of the upper cover 2, the shield of the circuit unit 3 is sufficiently provided. Is possible.
[0041]
Further, since the beam member 8 is provided between the inner plates 7 of the case main body 1, sufficient strength can be obtained. The beam member 8 has a circuit side connection connector 9a and a power supply side connection connector 9b to connect the units 3 and 4. Further, the beam member 8 has a ventilation hole 8d, and the power supply unit 4 side from the circuit unit 3 side by the cooling fan 36b of the power supply unit 4 through the ventilation holes 7b and 20a and the ventilation hole 34a. Cool down to the point. Further, the beam member 8 is provided with the shield structure and partially uses the ventilation hole 8d when the shield spring 16 is attached. Further, the beam member 8 locks the locking piece 22a of the upper cover 2 using the ventilation hole 8d. As described above, the beam member 8 has not only a reinforcement for obtaining a sufficient strength for the electronic device casing but also a connector connection structure, a ventilation structure, a shield structure, and a locking structure.
[0042]
【The invention's effect】
As described above, in the electronic device casing according to the present invention, since the upper cover has the front plate, it is not necessary to provide a shield member according to the front plate. As a result, on the front side, it is only necessary to shield between the insertion hole and the front panel, and the number of parts for shielding is reduced and the configuration is simplified, thereby reducing the number of manufacturing steps and the manufacturing cost. It becomes possible.
[0043]
Moreover, sufficient strength can be obtained by providing the beam material between the inner plates of the case body.
[0044]
Moreover, since the beam member has a circuit side connection connector and a power supply side connection connector, the circuit unit and the power supply unit can be connected.
[0045]
Further, since the beam member has the ventilation hole, it is possible to perform cooling from the circuit unit side to the power supply unit side by the cooling fan of the power supply unit.
[0046]
Further, the beam member can be attached by inserting a shield member through a slit hole provided at the upper end of the beam member and a ventilation hole.
[0047]
Further, the beam member can lock the locking piece of the upper cover using the ventilation hole.
[0048]
As described above, the beam member can have not only a reinforcement for obtaining a sufficient strength in the electronic device casing but also a connector connection structure, a ventilation structure, a shield structure, and a locking structure.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a case main body of a casing for electronic equipment according to the present invention.
FIG. 2 is a perspective view showing an upper cover of the electronic device casing.
FIG. 3 is a perspective view showing a circuit unit in the electronic device casing.
FIG. 4 is a perspective view showing a power supply unit in the electronic device casing.
FIG. 5 is a cross-sectional view showing an assembled state of the electronic device casing.
FIG. 6 is a perspective view illustrating an example of a conventional electronic device casing.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Case main body, 2 ... Top cover, 3 ... Circuit unit, 4 ... Power supply unit, 6 ... Bottom plate, 7 ... Inside plate, 8 ... Beam material, 8d ... Ventilation hole part, 9a ... Circuit side connection connector, 9b ... Power-supply side connector, 16 ... shield member, 17 ... slit hole, 19 ... top plate, 20 ... outer plate, 21 ... front plate, 21a ... insertion hole, 22a ... locking piece, 29 ... front panel, 36b ... cooling fan.

Claims (5)

A case main body (1) having inner side plates (7) erected opposite to both ends of the bottom plate (6), the front side, the rear side and the upper side being opened;
It has each outer plate (20) standing up against both ends of the top plate (19) and has a front plate (21) on the front side of the top plate, and the rear side and the bottom side are open, An upper cover (2) that attaches each outer plate to the outer surface of each inner plate, closes the upper opening of the case body with the top plate, and closes the front opening of the case body with the front plate When,
A beam member (8) erected on the bottom plate so as to be connected between the inner plates of the case body;
A front panel (29) and a substrate (27) are provided, the front panel is provided on one end side of the substrate, and the inside of the case body is inserted through an insertion hole (21a) formed in the front plate of the upper cover. A circuit unit (3) which is inserted into the insertion hole to close the insertion hole;
A power supply unit (4) that is inserted into the case main body through a rear opening formed by the case main body and the upper cover and supplies power to the circuit unit;
Between the upper end of each inner plate part and the top plate, between the upper end of the beam member and the top plate, between the top plate and the front panel, and between the bottom plate and the front panel, respectively. A shield member (16) disposed so as to surround the circuit unit,
A housing for electronic equipment, comprising: The beam member (8) has a circuit side connection connector (9a) to which the circuit unit (3) is connected and a power supply side connection connector (9b) to which the power supply unit (4) is connected. The housing for an electronic device according to claim 1. The beam member (8) has a ventilation hole (8d) for ventilating from the circuit unit (3) to the power supply unit via a cooling fan (36b) disposed in the power supply unit (4). It has, The housing | casing for electronic devices of Claim 1 or Claim 2 characterized by the above-mentioned. The ventilation hole (8d) of the beam member (8);
A slit hole (17) provided at an upper end of the beam member;
The housing for electronic devices according to claim 1, wherein the shield member (16) is inserted and attached. The ventilation hole (8d) of the beam member (8);
A locking piece (22a) provided on the top plate (19) of the upper cover (2) and inserted and locked into the ventilation hole;
5. The electronic device casing according to claim 1, further comprising:

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