JP3738543B2 - Radiator mounting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a radiator mounting device for an acoustic device having a radiator in a main body cabinet.
[0002]
[Prior art]
FIG. 4 shows a conventional radiator mounting device. In FIG. 4, an IC 12 is soldered to a printed wiring board 11 that constitutes a predetermined circuit, and a radiator 13 is tightly fastened to the IC 12 with screws for the purpose of radiating heat generated by the IC 12. The radiator 13 is composed of an aluminum radiator base 13a and several aluminum fins 13b by a caulking method, and has a considerable weight. Therefore, an attachment piece 14 for supporting the radiator 13 is attached to the radiator 13 and is screwed to the chassis 15. The back plate 16 is configured to be attached from the back of the radiator 13 after the above-described configuration, and to screw the back panel 17 having a sufficient heat radiating hole from the same direction.
[0003]
[Problems to be solved by the invention]
In such a radiator mounting device, since the cabinet is constructed by sequentially assembling with respect to the chassis 15, a construction method for attaching the radiator 13 and the printed wiring board 11 to the cabinet already configured cannot be performed. was there.
[0004]
The present invention has been made in view of the above-mentioned conventional problems, and has been made for the purpose of providing a radiator mounting device that can attach a radiator and a printed wiring board to an already configured cabinet and can absorb mounting displacement between components. It is.
[0005]
[Means for Solving the Problems]
In order to solve this problem, a radiator mounting device according to the present invention includes a sub cabinet with a printed wiring board on which a heat sink is fixed together with an IC, and a through hole for the heat sink while fixing the sub cabinet. A wooden main body cabinet, a radiator having at least one elastic mounting piece, a first screw and a second screw for screwing and fixing the radiator, the heat sink and the wooden main body cabinet, respectively. The first screw fixes and fixes a first mounting hole provided in the radiator and a mounting hole provided in the heat sink, and the second screw includes a second mounting hole provided in the elastic mounting piece and the is obtained by configured to secure the mounting hole wooden cabinet is provided, thereby, without restrictions on the assembling method can absorb the mounting deviation between the parts radiator mounting device It is.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, there is provided a sub-unit cabinet having a printed wiring board on which a heat sink is fixed together with an IC, and a wooden main body which fixes the sub-unit cabinet and has a through hole for the heat sink. A cabinet, a radiator having at least one elastic mounting piece, and a first screw and a second screw for screwing and fixing the radiator plate and the radiator , wherein the first screw is the radiator. and a heat radiating plate is tightly fixed, said second screw is obtained by configured to secure said wooden body cabinet and the radiator through the resilient mounting piece, the conventional radiator radiating plate By dividing into a heatsink, there is no restriction on the assembly method, and the elastic pieces of the heatsink absorb the misalignment between components caused by making the main body cabinet wooden .
[0007]
According to a second aspect of the present invention, the abutment rib is formed so as to project from the auxiliary cabinet on the side of the printed circuit board on which the heat sink is projected, and the projecting dimension of the heat sink protruding from the front end of the contact rib is constant It is configured to be held and brought into contact with the inner surface of the radiator mounting surface in the wooden main body cabinet, and has an effect of further absorbing the displacement between components.
[0008]
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3.
(Embodiment 1)
FIG. 1 is an overall view of a radiator mounting device according to a first embodiment of the present invention, and FIG.
[0009]
In the figure, reference numeral 9 denotes a main body cabinet, which is a wooden wooden box, and has a rectangular opening 9a on the top surface and a heat sink through hole 9c on the back plate 9b. Reference numeral 8 denotes a sub cabinet, which is screw-fixed in a shape to block a square opening 9a opened in the main body cabinet 9, and has a printed wiring board 1 on which the heat sink 4 is fixed together with the IC 2. Reference numeral 7 denotes a rear panel in which the radiator 3 is housed and arranged, and is screwed to the rear plate 9 b of the main body cabinet 9.
[0010]
The printed wiring board 1 is fixed by soldering the IC 2, and the heat sink 4 is fixed by twisting after inserting the fastening legs 4 a into the printed wiring board 1. Is going. The printed wiring board 1 is fixed to a boss 8a provided in the sub cabinet 8 with screws 8b, and the sub cabinet 8 is fixed to the main body cabinet 9 with screws 8c. The opening 9a of the main body cabinet 9 and the sub cabinet 8 are configured with a slight gap.
[0011]
The radiator 3 includes a radiator base 3a, an attachment hole 3b provided in the radiator base 3a, an elastic attachment piece 3c formed integrally with the left and right ends thereof, and an attachment hole 3d provided at the tip of the elastic attachment piece 3c. And have. The mounting hole 3b is fixed to the mounting hole 4a provided in the heat radiating plate 4 with screws 3e, and the mounting hole 3d is fixed to the mounting hole 9d provided in the back plate 9b of the main body cabinet 9 with screws 3f. . Here, in order to conduct heat conduction between the radiator 3 and the heat radiating plate 4, the fixing with the screw 3e is fixedly fixed.
[0012]
Since the main body cabinet 9 is made of wood, it is formed in a box shape in advance. For this reason, even if the sub cabinet 8 to which the printed wiring board 1 is attached is inserted slightly from above to be assembled from the top, the structure in which the radiator 3 is directly attached to the IC 2 as in the conventional structure protrudes greatly from the opening 9a. It was impossible in terms of construction method. For this reason, in the present invention, the conventional radiator is divided into a radiator plate 4 that can be soldered on the printed wiring board together with the IC 2 by a dip method, and a radiator 3 for raising the heat radiation effect by the outside air.
[0013]
Further, the elastic piece 3c can absorb the displacement of a wooden cabinet having a large variation in size as compared with the conventional molding cabinet, and can absorb the displacement of the attachment due to the gap between the opening 9a and the sub cabinet 8.
[0014]
As described above, according to the present embodiment, it is possible to provide a radiator mounting device that is not subject to restrictions on the assembly method that comes from the size of the radiator, and it is possible to provide a radiator mounting device that can absorb mounting displacement between components. Is.
[0015]
(Embodiment 2)
Next, FIG. 3 shows a radiator mounting device according to the second embodiment. In FIG. 3, 8a is an abutment rib formed on the side cabinet 8 on the protruding side of the radiator plate 4 of the printed wiring board 1. The heat sink 4 is formed integrally with the sub-body cabinet 8 and holds the projecting dimension of the heat radiating plate 4 projecting from the tip of the contact rib 8a so as to be constant. When attaching the sub cabinet 8 to the main body cabinet 9, the abutment rib 8 a is configured to abut against the inner surface of the back plate 9 b of the main body cabinet 9 in order to eliminate left-right misalignment due to the gap with the opening 9 a, and the heat sink 4 And the radiator 3 are made to have a thickness tolerance of the back plate 9b.
[0016]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a radiator mounting device that is not subject to restrictions on the assembly method resulting from the size of the radiator, and to provide a radiator mounting device that can absorb mounting displacement between components. An advantageous effect is obtained.
[Brief description of the drawings]
FIG. 1 is an overall view of a radiator mounting device according to an embodiment of the present invention. FIG. 2 is a sectional view of a radiator mounting device according to an embodiment of the present invention. Cross-sectional view of radiator mounting device according to configuration [Fig. 4] Cross-sectional view of conventional radiator mounting device [Explanation of symbols]
1 Printed wiring board 2 IC
3 Radiator 3c Elastic mounting piece 4 Heat sink 8 Sub cabinet 8a Contact rib 9 Main cabinet

Claims (2)

A sub cabinet with a printed wiring board having a heat sink fixed together with an IC, a wooden main body cabinet having the sub cabinet and the through hole of the heat sink, and at least one of which has an elastic mounting piece And a first screw and a second screw for screwing and fixing the radiator, the radiator plate, and the wooden main body cabinet, respectively. The first screw is provided in the radiator. and a mounting hole mounting hole and the heat radiating plate is provided in close contact fixed, said second screw was configured to secure the mounting hole in which the second mounting hole and the wooden cabinet provided in said resilient mounting member comprises A radiator mounting device characterized by that. In the wooden main body cabinet, the abutment rib is projected and formed in the sub cabinet on the heat sink protruding side of the printed wiring board, and the protruding dimension of the heat sink protruding from the tip of the abutting rib is kept constant. The radiator mounting device according to claim 1, wherein the radiator mounting device is configured to abut on an inner surface of the radiator mounting surface.

Images