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Positioning fixture for welding

A technology for positioning fixtures and components, which is used in the assembly of printed circuits with electrical components, sustainable manufacturing/processing, electrical components, etc. It can solve the problem of increasing the position fluctuation of electronic components, and achieve the effect of reducing the position fluctuation.

Pending Publication Date: 2020-11-17
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the amount of position fluctuation of electronic components becomes large

Method used

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  • Positioning fixture for welding
  • Positioning fixture for welding
  • Positioning fixture for welding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0029] Next, Embodiment 1 of the present invention will be described using the drawings. figure 1 It is a rear perspective view of the welding positioning jig 1 according to the first embodiment. figure 2 It is a cross-sectional view showing the state after the welding positioning jig 1 is assembled on the insulating substrate 11, specifically, it shows that figure 1 A cross-sectional shape cut along line A-A upside down and a cross-sectional shape of the insulating substrate 11 are shown. image 3 It is a cross-sectional view showing the state after the welding positioning jig 1 is assembled on the insulating substrate 11, specifically, it shows that figure 1 A cross-sectional shape cut along line B-B upside down and a cross-sectional shape of the insulating substrate 11 are shown.

[0030] Such as Figure 1 ~ Figure 3 As shown, the positioning jig 1 for soldering is a jig assembled to the insulating substrate 11 in the process of soldering the electronic component 15 . ...

Embodiment approach 2

[0044] Next, a welding positioning jig 1A according to Embodiment 2 will be described. Figure 5 It is a cross-sectional view showing a state where welding positioning jig 1A according to Embodiment 2 is assembled to insulating substrate 11 . In addition, in Embodiment 2, the same constituent elements as those described in Embodiment 1 are given the same reference numerals and descriptions thereof are omitted.

[0045] Such as Figure 5 As shown, in Embodiment 2, two electronic components 15 are mounted, and the plate-like component 2 has two openings 4 and two pairs of protrusions 5 corresponding thereto. One electronic component 15 is arranged in a state of bridging between the circuit patterns 14a and 14e, and the other electronic component 15 is arranged in a state of bridging between the circuit patterns 14e and 14b. In addition, when three or more electronic components 15 are mounted, the number of openings 4 and a pair of protrusions 5 may be adjusted accordingly.

...

Embodiment approach 3

[0048] Next, a welding positioning jig 1B according to Embodiment 3 will be described. Figure 6 It is a cross-sectional view showing a state where the welding positioning jig 1B according to Embodiment 3 is assembled to the insulating substrate 11 . In addition, in Embodiment 3, the same constituent elements as those described in Embodiments 1 and 2 are given the same reference numerals and their descriptions are omitted.

[0049] In the case where the insulating substrate 11 and the circuit patterns 14a, 14b, 14c, and 14d are warped into a downwardly convex shape due to the influence of heat, if the central portion of the positioning jig 1 for soldering is warped from the circuit patterns 14a, 14b, 14c, and 14d Therefore, when the mounted electronic component 15 is in the center, the position of the electronic component 15 may be shifted, and the product may become a defective product in appearance.

[0050] In order to relieve such problems, such as Figure 6 As shown, in...

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Abstract

The purpose of the present invention is to provide a welding positioning fixture capable of reducing the amount of positional fluctuation of an electronic component even when the size of an insulatingsubstrate changes due to fluctuations in the production of the insulating substrate. A positioning fixture (1) for soldering is provided with a plate-shaped member (2) that is attached to an insulating substrate (11) in a state of being in contact with the upper surface of a circuit pattern (14a, 14b, 14c, 14d). The plate-like member (2) has: an opening (4) formed in the plate-like member (2) sothat the electronic component (15) can be exposed; and a pair of protrusions (5) that are formed on the peripheral edge of the opening (4) of the plate-shaped member (2), protrude toward the insulating substrate (11), and can be inserted into grooves (16) formed between the circuit patterns (14a, 14b) of the insulating substrate (11).

Description

technical field [0001] The invention relates to a positioning fixture for welding. Background technique [0002] In assembling a power module, a solder material is generally used as a bonding material for electronic components such as chip resistors and capacitors that bridge between a plurality of circuit patterns formed on an insulating substrate. Currently, cream solder obtained by kneading flux and spherical solder is used as a solder material. In this case, after applying cream solder to a part of the circuit pattern by printing, the electronic components were mounted and reflowed to melt the solder, and then cleaned to remove the flux. [0003] In recent years, a soldering process using plate solder instead of cream solder has been widely used. Since no flux is used, cleaning is not required and manufacturing cost can be reduced. [0004] However, since the ability to hold electronic components decreases due to the change from cream solder to board solder, a position...

Claims

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Application Information

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IPC IPC(8): H05K3/34
CPCH05K3/34H05K13/0465H05K3/303H05K3/341H05K2203/167H05K2203/0195Y02P70/50
Inventor 吉田健治矢野佑树
Owner MITSUBISHI ELECTRIC CORP
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