JPH0679195U - Radiator - Google Patents

Abstract

(57) [Abstract] [Purpose] The fixing position of the heat sink to be mounted on a circuit board or the like can be freely set according to the mounting conditions, and the cost for mounting can be reduced. Provide a radiator. [Structure] A fixing groove (11) is formed along with a slit (11A) along a molding surface (10A) during extrusion molding in the extrusion direction, and a head (14B) or a nut of a screw member (14) or a nut is provided therein. The molding surface (1
A radiator (10) adapted to fix the heat-dissipating body (circuit board 2) to 0A).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a radiator, and more particularly to a radiator (hereinafter referred to as a heat sink) suitable for being incorporated in a stabilized DC or AC power source used as a power source for an electronic circuit.

[0002]

[Prior art]

 In recent years, electronic devices related to mechatronics often use semiconductor elements that are sensitive to temperature changes and polymer materials that are susceptible to thermal changes as their components.If the temperature becomes too high, the elements will break down and their life will decrease. Therefore, it is likely to cause performance deterioration and frequent failures. Even in the above stabilized power supply, many semiconductor elements such as transistors are incorporated in the stabilization circuit in order to supply constant voltage and current regardless of changes in ambient temperature caused by load fluctuations. ing. A particularly large amount of high heat is generated at the junction of such semiconductor elements, so it is necessary to radiate the heat.For example, by holding the circuit board on a heat sink, cooling it from the circuit board via a heat sink. Is being done.

[0003]

[Problems to be solved by the device]

 However, in the conventional air-cooled heat sink as described above, its main body is generally formed by extrusion molding of aluminum or the like into a comb shape as shown in FIG. For example, a circuit board 2 which is a target of heat radiation is fixed to a part of the surface 1A by screws 3. Therefore, the screw holes 1B and the fixing holes 2B must be formed at the corresponding positions on both the molding surface 1A and the circuit board 2, and not only the screw hole setting positions are regulated, but also the holes are opened. And it takes man-hours for mounting.

The object of the present invention is to pay attention to the above-mentioned conventional problems, and in order to solve the problems, the fixing position can be freely set according to the mounting conditions of the heat-radiating body to be mounted such as a circuit board. The purpose of the present invention is to provide a radiator that can be manufactured and the cost related to its fixing can be reduced by easily forming the groove during extrusion molding.

[0005]

[Means for Solving the Problems]

 In order to achieve such an object, the present invention has a fixed groove formed in the extrusion direction along a molding surface during extrusion molding and having a fixed groove in which a slit in the extrusion direction is opened in the molding surface. The head of the screw member or the nut member can be inserted into the screw member, and the nut corresponding to the screw member or the fixing screw corresponding to the nut member is inserted into the fixing groove through the slit. The heat-dissipating member is fixed to the molding surface by being screwed into a nut member.

[0006]

[Action]

 According to the present invention, the head of the screw member or the nut member is inserted into the fixing groove, and the nut of the screw member is externally screwed through the slit, or the nut member is fixed to the nut member from the outside. The heat-dissipating member can be fixed to one molding surface of the radiator by these fixing means by screwing, and the heat-dissipating member is fixed to the molding surface to be fixed for fixing the heat-dissipating member as in the conventional case. It is not necessary to provide a screw hole in accordance with the radiator fixing hole.

[0007]

【Example】

 Embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. Here, 10 is a radiator (heat sink) according to the present invention, which is integrally formed by extrusion molding of aluminum or the like. 10A is a circuit board mounting surface formed when the heat sink 10 is molded, 10C is a comb-shaped heat dissipating surface formed in the longitudinal direction of the radiator 10, and 11 is formed along the longitudinal direction of the circuit board mounting surface 10A. It is a groove whose cross section is almost square (hereinafter referred to as a fixed groove). Further, the fixed groove 11 is formed with a cut groove (hereinafter referred to as a slit) 11A opening to the circuit board mounting surface 10A, and the width of the slit 11A is made sufficiently narrower than the width of the fixed groove 11 in the same direction. is there. The fixing groove 11 and the slit 11A are formed at the same time as the comb-shaped heat radiation fins 10B in the longitudinal direction formed on the heat dissipation surface 10C when the heat sink 10 is formed.

In the air-cooled heat sink 10 having the above-described structure, when mounting the circuit board 2 similar to that shown in FIG. 3 on the circuit board mounting surface 10 A, for example, the fixing grooves 11 opened at both ends of the radiator 10 are provided. First, a plate-type nut 13 having a cross-sectional shape that can be inserted into the clip nut 12 having springiness or the fixing groove 11 from the opening end is inserted. Then, the positions of the screw holes 12A or 13A formed in the nuts 12 or 13 are aligned with the positions of the fixing holes 2B on the circuit board 2 side, and then inserted into the fixing holes 2B of the circuit board 2. It is only necessary to screw the threaded portion 3A of the external screw 3 into the threaded hole 12A of the nut 12 or the threaded hole 13A of the nut 13 inserted into the fixed groove 11 from the cut groove 11A. In this way, the positions of the nuts 12 and 13 can be freely positioned in the fixing groove 11 in correspondence with the positions of the fixing holes 2B on the circuit board 2 side.

FIG. 2 shows another embodiment of the present invention. In this example, the cross-sectional shape of the fixing groove 11 is easy to push in when the clip nut 12 or the plate type nut 13 is inserted from the open end portions of both ends thereof, and the posture is unstable due to rattling in the fixing groove 11. It is formed in a convex shape so that it will not occur. It should be noted that a bolt member having a head portion 14B shown as 14 may be inserted into the fixing groove 11 shown in FIGS. 1 and 2 instead of the nuts. In this case, the threaded portion 14A is kept in a state of being projected to the outside through the slit 11A, the fixing hole 2B on the circuit board 2 side is fitted into the threaded portion 14A, and a nut (not shown) is screwed. The circuit board 2 can be attached to fix the circuit board 2 to the circuit board mounting surface 10A.

In the heat sink 10 having the above-described configuration, the heat dissipation surface 10C is formed in a comb shape so as to easily dissipate heat with aluminum or the like having a high thermal conductivity, so that the temperature easily rises. It is possible to efficiently dissipate the heat transmitted from the body to be radiated such as the substrate 2. In this example, the mounting surface 10A and the fixing groove 11 of the circuit board 2 are formed on the side surface of the heat sink 10. However, the positions of the mounting surface 10A and the fixing groove 11 formed on the mounting surface 10A side are as described above. It is not limited to such aspects. Further, the shape of the heat sink 10, especially the heat radiation surface 10C on which the fins 10B are formed is not limited to the shape shown in FIGS. Furthermore, the fixing groove 11 and the slit 11A can be appropriately formed according to the arrangement and shape of the heat sink 10 as long as they are simultaneously formed in the same direction as the fin 10B when the heat sink 10 is extruded.

Furthermore, the present invention is not limited to a heat sink for forced cooling or natural cooling, but can be applied not only to water cooling, evaporative cooling, but also to a heat pipe type, and the radiator itself is extruded and molded. It is needless to say that the present invention can be widely applied to a structure in which a heat-dissipating body such as a substrate is directly fixed to the radiator for cooling.

[0013]

[Effect of device]

 As described above, according to the present invention, there is a fixing groove formed in the above-mentioned extrusion direction along the molding surface at the time of extrusion molding, and having the fixing groove having the slit in the extrusion direction opened on the molding surface. The head of the screw member or the nut member can be inserted into the groove so that the nut corresponding to the screw member or the fixing screw corresponding to the nut member is inserted into the fixing groove through the slit. Since the heat-dissipating body is fixed to the molding surface by screwing it onto the heat-dissipating part or nut member, there is no need to machine a screw hole to attach a cooling object such as a board to the heat-dissipator. Facilitates and contributes to cost reduction.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of the structure of a radiator according to the present invention.

FIG. 2 is a perspective view showing the configuration of another embodiment of the present invention.

FIG. 3 is a perspective view showing a configuration of a conventional example.

[Explanation of symbols]

 2 Circuit board 2B Fixing hole 3 Screw 10 Radiator (heat sink) 10A Circuit board mounting surface 10B Radiating fin 10C Radiating surface 11 Fixing groove 11A Slit 12 Clip nut 12A, 13A Screw hole 13 Plate (mold) nut 14 Bolt member 14A Screw part 14B head

Claims (1)

[Scope of utility model registration request] 1. An extrusion groove formed along the molding surface in the extrusion direction, the molding surface having a fixing groove having an opening in the extrusion direction, and the fixing groove having a head portion or a nut of a screw member. By making the member insertable, by screwing a nut corresponding to the screw member or a fixing screw corresponding to the nut member to a screw portion or a nut member of the screw member inserted into the fixing groove through the slit. A radiator characterized in that a body to be radiated is fixed to the molding surface.