JPH0229728Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a flat semiconductor stack formed by laminating a required number of flat semiconductor elements.
This invention relates to a flat semiconductor stack configured to be pressurized by a jack to provide a specified tightening pressure.

The configuration of a conventional flat semiconductor stack, as shown in FIGS.
The required number of sets are stacked by passing them through the insulating pipe 4 through the insulating seats 5, 5, and commonly through two parallel double-threaded bolts 3, 3 coated with insulation. On the left end side, the left end insulation seat 5
The leaf springs 6 facing each other via the alignment seat 7 are tightened and fixed with tightening nuts 8, 8, and on the right side, the movable fitting 9 that abuts the right-most insulating seat 5 is tightened with tightening nuts 8', 8.
Tighten and fix with 8'. In the figure, numerals 12 and 12 represent a cubicle tank or support frame on which this flat semiconductor stack is mounted.

In other words, the conventional flat semiconductor stack has a structure in which the left and right tightening nuts 8, 8 and 8', 8' are turned to apply pressure to apply a specified tightening pressure, and the alignment seat 7 is used to apply pressure to the flat semiconductor elements 2... The pressure is applied evenly to the center of...

However, in recent years, as the capacity of the flat semiconductor element 2 has increased, the specified tightening pressure has increased, and the method of applying pressure by turning the tightening nuts 8, 8' with a spanner has also reached its limit. In addition, the difficulty and poor efficiency of turning the nuts 8, 8' with a large tightening torque using a spanner within a cubicle in which the flat semiconductor stack is mounted has become a problem. Furthermore, the tightening nut 8,
In the case of applying pressure by turning 8', since twisting action is inevitably applied to the stack, there was a problem in that the fixing of the stack had to be of a structure that could withstand said twisting action.

Therefore, an object of this invention is to provide an improved flat semiconductor stack which can be pressurized by a hydraulic jack or the like to apply a specified tightening pressure in order to overcome the above-mentioned drawbacks.

Next, this invention will be explained with reference to the embodiment shown in FIGS. 2A and 2B.

The configuration of the flat semiconductor stack shown in FIGS. 2A and 2B as an embodiment of this invention is largely the same as the conventional example shown in FIGS. 1A and 1B. That is, the flat semiconductor element 1 and the set of heat sinks 1 and 1 arranged on both sides thereof are passed through the insulating pipe 4 through the insulating seat 5 and passed through two common double-threaded bolts 3 and 3 coated with insulation. The required number of screws are stacked on the same double-threaded bolts 3, 3, and a plate spring 6 is attached to the left end of the bolts 3, 3, facing the left end insulating seat 5 through the alignment seat 7, and tightened with nuts 8, 8. A movable fitting 9, which is loose with respect to the bolt 3 and its insulating pipe 4 and abuts the insulating seat 5 at the right end, is fastened to the right end by tightening nuts 8', 8'.

Moreover, the screws of the bolts 3, 3 which protrude by the required length from the positions of the nuts 8', 8' on the right end have the required dimensions from the moving bracket 9, that is, suitable for installing a small hydraulic jack 13. The fixing fittings 10 are fixed and installed at a distance of a dimension l. That is, the fixture 10 is provided with tap holes 10a, 10a into which the bolts 3, 3 are screwed,
After screwing the bolt 3 into this tap hole 10a, the lock nut 11 is tightened to realize the immovable state of the fixture 10.

Therefore, in the case of this flat conductor stack, in order to pressurize the stack to a specified clamping pressure, a hydraulic jack 13 is installed at a distance l apart, pressurizes the stack to obtain the specified clamping pressure, and the movable fittings are attached accordingly. Tighten the nuts 8', 8' on the 9 side to complete the pressurizing work. Note that, conventionally, the pressing force was determined based on the deflection of the leaf spring 6, but in the case of the flat semiconductor stack of this embodiment, it is possible to set the specified tightening pressure on the hydraulic jack 13 from the beginning and pressurize. There is no need to particularly consider the state of deflection of the leaf spring 6.

This invention has the following effects based on the flat semiconductor stack having the structure described above.

By installing a hydraulic jack and using the pressurizing force of the hydraulic jack, pressurizing work can be carried out easily and quickly even when the flat semiconductor stack is installed in a cubicle. Therefore, if a flat semiconductor element in the stack is damaged, repair work can be carried out within the cubicle in a short time, which is extremely convenient. Pressure can be applied linearly with a hydraulic jack or the like, and no special torsion force is applied to the stack, so it is very convenient that no special consideration is required for the fixing structure of the stack.

[Brief explanation of drawings]

1A and 1B are a front view and a right side view of a conventional flat semiconductor stack, and FIGS. 2A and 2B are a front view and a right side view of a flat semiconductor stack that is an embodiment of this invention. 1... heat sink, 2... flat semiconductor element,
5...Insulating seat, 3...Bolt, 7...Aligning seat, 6
...Plate spring, 9...Movement fitting, 8, 8'...Tightening nut, l...Required dimensions, 10...Fixing metal fitting, 13...Hydraulic jack.

Claims (1)

[Scope of utility model registration request] In a flat semiconductor stack in which a required number of sets of flat semiconductor elements and heat sinks arranged on both sides thereof are stacked on a common bolt with insulating seats in between, one end of the bolt is connected to the insulating seat through an alignment seat. An opposing leaf spring is installed, and at the other end, a movable metal fitting that is loose with respect to the bolt and a tightening nut for the movable metal fitting are installed, and a fixed metal fitting is immovably installed at a required distance from the movable metal fitting. A flat semiconductor stack characterized in that a jack is installed between a moving metal fitting and a fixed metal fitting so that the stack can be pressurized.