CN220233183U - Patch type lead frame convenient for dismounting radiating copper sheet - Google Patents

Abstract

The utility model relates to a patch type lead frame convenient for dismounting a radiating copper sheet, which relates to the technical field of lead frames, a plurality of radiating strips are respectively movably clamped in a chute, and positioning holes are formed in the left end and the right end of each radiating strip in a penetrating way; after a plurality of positioning bolts respectively pass through the positioning holes, the positioning bolts are screwed on the base plate; the bottom surfaces of the front end and the rear end of the limiting plate are provided with limiting grooves, the radiating strips are respectively movably inserted into the limiting grooves, and the middle part of the limiting plate is provided with a fixing hole in a penetrating way; after a plurality of fixing bolts respectively pass through the fixing holes, the threads are screwed on the substrate, an operator can fix the end part of the radiating strip on the substrate through the positioning bolts and then match the fixing bolts, the radiating strip is attached to the side edge of the lead frame by utilizing the limiting plate, the radiating effect is ensured, and the positioning bolts and the fixing bolts are rotated, so that the radiating strip is convenient to install and detach.

Description

Patch type lead frame convenient for dismounting radiating copper sheet

Technical Field

The utility model relates to the technical field of lead frames, in particular to a patch type lead frame convenient for dismounting a radiating copper sheet.

Background

The lead frame is used as a chip carrier of an integrated circuit, is a key structural member for realizing the electric connection between an internal circuit lead-out end of the chip and an external lead by means of bonding materials (gold wires, aluminum wires and copper wires) and forming an electric loop, and plays a role of a bridge connected with an external lead, and most of semiconductor integrated blocks need to use the lead frame, which is an important basic material in the electronic information industry, and the installation of a radiating fin in the existing lead frame is troublesome, so that a patch type lead frame convenient for disassembling and assembling a radiating copper sheet is needed to solve the problems.

Disclosure of Invention

The utility model aims to overcome the defects and shortcomings in the prior art, and provides a patch type lead frame with a radiating copper sheet convenient to assemble and disassemble.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: it comprises a substrate and a lead frame; the lead frames are respectively glued on the substrate, and the upper side and the lower side of the lead frames are provided with sliding grooves;

it also comprises:

the plurality of radiating strips are movably clamped in the sliding groove respectively, and positioning holes are formed in the left end and the right end of each radiating strip in a penetrating manner;

the positioning bolts penetrate through the positioning holes respectively and are screwed on the substrate;

the heat dissipation device comprises a plurality of limit plates, wherein limit grooves are formed in the bottom surfaces of the front end and the rear end of the limit plates, heat dissipation strips are respectively movably inserted into the limit grooves, and fixing holes are formed in the middle of the limit plates in a penetrating manner;

the fixing bolts penetrate through the fixing holes respectively, and then are screwed on the base plate.

Preferably, draw-in grooves have been seted up to the symmetry on two inside walls around the several spout, and both sides all are equipped with the chimb around the several heat dissipation strip, and the chimb activity card is established in the draw-in groove, has all had the fixed block with the bolt joint soon on the left and right sides of several lead frame, and the fixed slot has been seted up to the bottom surface of fixed block, and limiting plate activity card is established in the fixed slot.

Preferably, the left side and the right side of the plurality of lead frames are fixedly provided with a stop block, and the stop block is provided with an inclined plane.

Preferably, the plurality of limit grooves are all inclined surfaces.

Preferably, the left and right sides of the plurality of lead frames are fixedly provided with connecting sheets, and the connecting sheets are in contact with the heat dissipation strips.

Compared with the prior art, the utility model has the beneficial effects that: according to the patch type lead frame convenient for dismounting the radiating copper sheet, an operator can fix the end part of the radiating strip on the substrate through the positioning bolt and then fit the fixing bolt, the radiating strip is attached to the side edge of the lead frame through the limiting plate, the radiating effect is ensured, and the positioning bolt and the fixing bolt are rotated, so that the radiating strip is convenient to mount and dismount.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic view of a lead frame according to the present utility model.

Fig. 3 is a schematic structural view of a heat dissipating strip according to the present utility model.

Fig. 4 is a schematic structural view of a limiting plate and a fixing block in the present utility model.

Fig. 5 is a schematic structural view of a limiting plate in the present utility model.

Reference numerals illustrate:

base plate 1, lead frame 2, spout 3, heat dissipation strip 4, locating hole 5, locating bolt 6, limiting plate 7, spacing groove 8, fixed orifices 9, fixing bolt 10, draw-in groove 11, chimb 12, fixed block 13, fixed slot 14, dog 15, connection piece 16.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1-5, the following technical scheme is adopted in this embodiment: it comprises a substrate 1 and a lead frame 2; the lead frames 2 are respectively glued on the substrate 1, and the upper side and the lower side of the lead frames 2 are provided with sliding grooves 3;

it also comprises:

the heat dissipation strips 4 are arranged, the heat dissipation strips 4 are respectively and movably clamped in the sliding grooves 3, the left ends and the right ends of the heat dissipation strips 4 are respectively and completely provided with positioning holes 5, the heat dissipation strips 4 are made of a material with good heat dissipation performance, and after the heat dissipation strips 4 are movably clamped in the sliding grooves 3, the lead frames 2 can be connected in series, so that heat on the lead frames 2 can be simultaneously transferred and diffused, and the heat dissipation effect is enhanced;

the plurality of positioning bolts 6 penetrate through the positioning holes 5 respectively, the plurality of positioning bolts 6 are screwed on the base plate 1 through threads, and two ends of the heat dissipation strip 4 can be fixed on the base plate 1 through the positioning bolts 6, so that an operator can conveniently install and detach the heat dissipation strip 4;

the limiting plates 7 are several, limiting grooves 8 are formed in the bottom surfaces of the front end and the rear end of the limiting plates 7, the radiating strips 4 are respectively and movably inserted into the limiting grooves 8, fixing holes 9 are formed in the middle of the limiting plates 7 in a penetrating mode, after the radiating strips 4 are inserted into the sliding grooves 3, the radiating strips 4 are movably clamped in the limiting grooves 8, the limiting plates 7 are located between the front radiating strips 4 and the rear radiating strips 4, the limiting plates 7 move downwards, the limiting plates 7 can press the radiating strips 4, the radiating strips 4 are attached to the base plate 1, dust is prevented from entering gaps between the radiating strips 4 and the base plate 1 after a long time, and heat dissipation performance is prevented from being affected;

the fixing bolts 10 are arranged, the fixing bolts 10 penetrate through the fixing holes 9 respectively, the base plate 1 is screwed with threads, the limiting plates 7 are fixed on two sides of the lead frame 2 through the fixing bolts 10, and the limiting plates 7 can be pressed downwards through the fixing bolts 10;

clamping grooves 11 are symmetrically formed in the front inner side wall and the rear inner side wall of the sliding grooves 3, convex edges 12 are respectively arranged on the front side and the rear side of the radiating strips 4, the convex edges 12 are movably clamped in the clamping grooves 11, fixing blocks 13 are respectively screwed on the left side and the right side of the lead frames 2 by bolts, fixing grooves 14 are formed in the bottom surfaces of the fixing blocks 13, limiting plates 7 are movably clamped in the fixing grooves 14, the radiating strips 4 are attached to the lead frames 2 through limiting actions of the clamping grooves 11 and the convex edges 12, better radiating can be achieved, operators can rotate the fixing blocks 13, enable the limiting plates 7 to be movably clamped in the fixing grooves 14, fix the fixing blocks 13 on the lead frames 2 through bolts, limit the limiting plates 7 on the side edges of the lead frames 2, and reduce gaps between the radiating strips 4 and the lead frames 2 after the limiting plates 7 are downwards pressed on the limiting plates 7;

the left side and the right side of the plurality of lead frames 2 are fixedly provided with the stop blocks 15, the stop blocks 15 are provided with inclined surfaces, so that the heat dissipation strips 4 are conveniently attached to the inclined surfaces of the stop blocks 15, gaps are reduced, the plurality of limit grooves 8 are provided with inclined surfaces, and when the limit plates 7 downwards press the heat dissipation strips 4, the heat dissipation strips 4 are prevented from being broken by shearing force of the side edges of the limit plates 7 through the inclined surfaces in the limit grooves 8;

the connecting pieces 16 are fixedly arranged on the left side and the right side of the plurality of lead frames 2, the connecting pieces 16 are in contact with the heat dissipation strips 4, the connecting pieces 16 are made of materials with good heat dissipation performance, and the heat dissipation strips 4 in the same lead frames 2 can be connected through the connecting pieces 16, so that the heat dissipation effect is improved.

When the utility model is used, an operator glues a plurality of lead frames 2 on a substrate 1, then movably clamps a plurality of heat dissipation strips 4 in clamping grooves 11 through convex edges 12 respectively, connects a plurality of lead frames 2 in series, slides and places limiting plates 7 on the left side and the right side of the lead frames 2 through the limiting grooves 8, rotates a fixing block 13 to enable the limiting plates 7 to be movably clamped in fixing grooves 14, fixes the fixing block 13 on the lead frames 2 through bolts, can enable the two sides of the lead frames 2 limited by the limiting plates 7 to pass fixing bolts 10 through fixing holes 9, rotates the fixing bolts 10, drives the limiting plates 7 to descend, drives the heat dissipation strips 4 to press downwards, attaches the heat dissipation strips 4 on inclined surfaces of a stop block 15, and finally fixes two ends of the heat dissipation strips 4 on the substrate 1 through positioning bolts 6.

After adopting above-mentioned structure, this embodiment's beneficial effect is as follows:

1. setting a limiting plate 7, pressing the limiting plate 7 downwards through a fixing bolt 10, enabling the limiting plate 7 to drive the heat dissipation strip 4 to descend, enabling the heat dissipation strip 4 to be attached to the base plate 1, reducing gaps between the heat dissipation strip 4 and the base plate 1, preventing dust from entering, affecting heat dissipation effect, and facilitating installation and disassembly of the heat dissipation strip 4 by operators through the fixing bolt 10 and the positioning bolt 6;

2. set up fixed block 13, rotate fixed block 13 for limiting plate 7 activity card is established in fixed slot 14, and the operating personnel of being convenient for is with the both sides of limiting plate 7 limited lead frame 2, need not can aim at limiting plate 7 and the side of lead frame 2, the installation of limiting plate 7 of being convenient for.

The foregoing is merely illustrative of the present utility model and not restrictive, and other modifications and equivalents thereof may occur to those skilled in the art without departing from the spirit and scope of the present utility model.

Claims (5)

1. A patch type lead frame convenient for dismounting a radiating copper sheet comprises a substrate (1) and a lead frame (2); the lead frames (2) are respectively glued on the substrate (1), and sliding grooves (3) are formed in the upper side and the lower side of the lead frames (2);

characterized in that it further comprises:

the heat dissipation strips (4), the plurality of heat dissipation strips (4) are movably clamped in the sliding groove (3), and the left end and the right end of the plurality of heat dissipation strips (4) are respectively provided with positioning holes (5) in a penetrating way;

the positioning bolts (6), after the positioning bolts (6) respectively pass through the positioning holes (5), the positioning bolts (6) are screwed on the base plate (1);

the heat dissipation device comprises a plurality of limiting plates (7), wherein limiting grooves (8) are formed in the bottom surfaces of the front end and the rear end of each limiting plate (7), heat dissipation strips (4) are respectively and movably inserted into the corresponding limiting grooves (8), and fixing holes (9) are formed in the middle of each limiting plate (7) in a penetrating mode;

the fixing bolts (10), the fixing bolts (10) are several, and after the fixing bolts (10) respectively pass through the fixing holes (9), the fixing bolts are screwed on the base plate (1).

2. The patch-type lead frame for facilitating disassembly and assembly of heat dissipation copper sheets as claimed in claim 1, wherein: clamping grooves (11) are symmetrically formed in the front inner side wall and the rear inner side wall of the sliding grooves (3), convex edges (12) are respectively arranged on the front side and the rear side of the radiating strips (4), the convex edges (12) are movably clamped in the clamping grooves (11), fixing blocks (13) are respectively screwed on the left side and the right side of the lead frames (2) through bolts, fixing grooves (14) are formed in the bottom surfaces of the fixing blocks (13), and limiting plates (7) are movably clamped in the fixing grooves (14).

3. The patch-type lead frame for facilitating disassembly and assembly of heat dissipation copper sheets as claimed in claim 1, wherein: the left side and the right side of the plurality of lead frames (2) are fixedly provided with stop blocks (15), and the stop blocks (15) are provided with inclined surfaces.

4. The patch-type lead frame for facilitating disassembly and assembly of heat dissipation copper sheets as claimed in claim 1, wherein: inclined surfaces are arranged in the plurality of limiting grooves (8).

5. The patch-type lead frame for facilitating disassembly and assembly of heat dissipation copper sheets as claimed in claim 1, wherein: connecting pieces (16) are fixedly arranged on the left side and the right side of the plurality of lead frames (2), and the connecting pieces (16) are in contact with the radiating strips (4).