JPH05280901A - P-plate land dimension measuring tool of electronically controlled device - Google Patents

Abstract

PURPOSE:To reduce an error due to measurement and at the same time achieve contact portability by measuring land dimensions without being interrupted by solder fillet of the land to be measured of a parts-mounting part and the surrounding land. CONSTITUTION:The title tool consists of a measuring part 101 where one short side of a plate-shaped, thin, and long metals cut off in rectangular shape and another retention part 102 without any cut-out, the cut-out part is applied to the land of P plate where parts are mounted and soldered, and the land dimensions are measured depending on whether the land dimensions and the cut-out dimensions match or not.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a P-plate land size measuring jig for an electronic control unit.

[0002]

2. Description of the Related Art Conventionally, when measuring a P plate land dimension of an electronic control device, a straight line ruler or a caliper has been used.

[0003]

However, in the above-mentioned straight line ruler, the solder fillet of the land to be measured in the component mounting portion or the land around it may be an obstacle and the straight line ruler may be directly applied to the outer shape portion of the land. I was unable to do so and an error occurred.

Further, in the caliper, the solder fillet on the land around the land to be measured interferes, and the caliper cannot be directly applied to the outer shape of the land, which causes an error, or is too large to be always carried. I couldn't.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention has a plate-like elongated rectangular metal having one short side cut out into a rectangular shape and the other without the cutout held in hand. The notch is applied to the land of the P plate on which the components are mounted and soldered, and the land size is measured depending on whether the land size and the notch size match.

Further, according to the present invention, in the long side portion of the outer rectangle, a portion parallel to the cutout portion is inwardly arranged so that the width of the metal portion between the notch portion and the long side portion of the outer rectangle becomes narrow. It has been scraped.

Further, the present invention uses a metal of a material which easily bends when a force is applied to both ends of a plate-like elongated rectangle.

Further, according to the present invention, a hole is provided in the other portion having no notch. Further, according to the present invention, a plurality of notches having different notch dimensions are provided on one side, and one part having no notch is connected to form a single plate.

[0009]

The operation of the above means is as follows.

According to the present invention, one short side of a plate-shaped elongated rectangular metal is cut out into a rectangular shape, so that the cutout portion of the land is not interfered by the solder fillet of the land to be measured. Can be directly applied, and the error due to measurement can be reduced.

Further, according to the present invention, in the long side portion of the outer rectangle, the portion parallel to the cutout portion is inward so that the width of the metal portion between the notch portion and the long side portion of the outer rectangle becomes narrow. By shaving, even if there is a land immediately next to the land to be measured, it is possible to directly apply the notch to the outer shape of the land without being disturbed by the solder fillet of the adjacent land. Can be reduced.

Further, according to the present invention, when a metal is used as a material, which easily bends when a force is applied to both ends of a plate-like elongated rectangle, when a land is in front of the land to be measured, Also, the notch can be directly applied to the outer shape of the land without being disturbed by the solder fillet of the front land, and the error due to measurement can be reduced.

Further, according to the present invention, when it is desired to measure a plurality of different land dimensions by providing a hole in the other portion having no notch, the one having the notch dimension to be measured is selected and the hole is selected in the hole. By making it possible to bundle through a ring of metal or the like, even when measuring a plurality of lands, it becomes very compact and can be always carried in a pocket or the like.

Further, according to the present invention, a plurality of notches having different notch dimensions are provided on one side, and one portion having no notch is connected to form a single plate, so that a plurality of different land dimensions are error-corrected. It can be measured with a small amount and can be carried at all times by sandwiching it between notebooks.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an outline view of the first embodiment of the present invention.
Reference numeral 101 is a plate-shaped measuring unit in which one short side of a metal having a shape of an elongated rectangle is cut out into a rectangle, and 102 is a holding unit of the other short side without cutout.

In the above structure, the method of using the first embodiment of the present invention is as follows. First, hold the holding portion 102, which is one short side without a notch, in the hand,
Apply the notch part 1 so that the land part is sandwiched, and at that time, check whether the size of the notch part and the size of the land part match, and if they match, the land size is the cut of the measurement jig. The land size can be known because it is similar to the notch size. By the above method, when measuring the land size, the notch can be directly applied to the outer shape of the land without being disturbed by the solder fillet of the land to be measured, and the error due to the measurement can be reduced.

Next, a second embodiment of the present invention will be described with reference to FIG. The method of use is the same as in the first embodiment, and will not be described.

In the figure, 201 is a measuring part and 202 is a holding part. In the above structure, the width of the metal part between the notch of the measuring part 201 and the long side of the outer rectangle is narrowed. By shaving inward the part parallel to the notch in the long side of the outer rectangle, even if there is a land immediately next to the land to be measured, the land is not disturbed by the solder fillet of the next land. The cutout portion can be directly applied to the outer shape of the to reduce the error due to measurement.

Next, a third embodiment of the present invention will be described with reference to FIG. In the figure, 301 is a measuring unit,
Reference numeral 302 denotes a holder, which is made of a metal that easily bends when a force is applied to both ends of a plate-shaped elongated rectangle, and is used when the notch of the measurement unit 301 is applied to the land portion. By using it by bending it in the opposite direction to the printed circuit board, even if there is a land on the holding part side of the land to be measured, the land of the holding part side will not be disturbed by the solder fillet of the land. By making it possible to directly apply the notch to the outer shape, the error due to measurement is reduced.

Next, a fourth embodiment of the present invention will be described with reference to FIG. The method of use is the same as in the first embodiment, and will not be described.

In the figure, 401 is a measuring part, 402 is a holding part, and 403 is a spelling hole. When it is desired to measure a plurality of different land dimensions by providing the spelling hole 403 in the other part without a notch. By selecting the notch size that you want to measure and allowing it to be bundled through a ring of metal or the like in the spelling hole 403, it becomes very compact even when measuring multiple lands. Therefore, you can always carry it in your pocket.

Next, a fifth embodiment of the present invention will be described with reference to FIG. The method of use is the same as in the first embodiment, and will not be described.

In the figure, reference numeral 501 is a measuring portion, and 502 is a holding portion. The measuring portion 501 has a plurality of notches having different notch dimensions, and one portion of the holding portion 502 having no notch is connected to one another. By making it into a plate shape, it can be carried at all times by being sandwiched between notebooks and the like.

[0025]

As described above, according to the present invention, by cutting one short side of a plate-shaped elongated rectangular metal into a rectangle, the land is not disturbed by the solder fillet of the land to be measured. Since the notch can be directly applied to the outer shape of, the error due to measurement can be reduced.

Further, according to the present invention, in the long side portion of the outer rectangle, the portion parallel to the cutout portion is inward so that the width of the metal portion between the notch portion and the long side portion of the outer rectangle becomes narrow. By shaving, even if there is a land immediately next to the land to be measured, it is possible to directly apply the notch to the outer shape of the land without being disturbed by the solder fillet of the adjacent land. Can be reduced.

Further, according to the present invention, by using a metal of a material which easily bends when a force is applied to both ends of a plate-like elongated rectangle, even if there is a land in front of the land to be measured, Since the notch can be directly applied to the outer shape of the land without being disturbed by the solder fillet of the land, the error due to the measurement can be reduced.

Further, according to the present invention, when it is desired to measure a plurality of different land dimensions by providing a hole in the other portion having no notch, the one having the notch dimension to be measured is selected and the hole is provided in the hole. By making it possible to bundle through a ring of metal or the like, even when measuring a plurality of lands, it becomes very compact and can be always carried in a pocket or the like.

Further, according to the present invention, a plurality of notches having different notch dimensions are provided on one side, and one portion having no notch is connected to form a single plate, so that a plurality of different land dimensions are error-corrected. It is possible to carry a small amount of measurement and carry it around at any time by sandwiching it between notebooks.

[Brief description of drawings]

FIG. 1 is an external view of a P-plate land dimension measuring jig of an electronic control device according to a first embodiment of the present invention.

FIG. 2 is an external view of a P-plate land dimension measuring jig of an electronic control device according to a second embodiment of the present invention.

FIG. 3 is a side view showing an example of how to use a P plate land dimension measuring jig of an electronic control unit according to a third embodiment of the present invention.

FIG. 4 is an external view of a P plate land dimension measuring jig of an electronic control device according to a fourth embodiment of the present invention.

FIG. 5 is an external view of a P-plate land dimension measuring jig of the electronic control device according to the first embodiment of the present invention.

[Explanation of symbols]

 101 measuring unit 102 holding unit 201 measuring unit 202 holding unit 301 measuring unit 302 holding unit 401 measuring unit 402 holding unit 403 spelling hole 501 measuring unit 502 holding unit

Claims (5)

[Claims] Claim: What is claimed is: 1. A plate-shaped metal having an elongated rectangular shape is formed with a cutout portion in which one short side is cut out in a rectangular shape, and the other without the cutout is held in a hand, and a component is mounted and soldered. A P-plate land dimension measuring jig for an electronic control device, wherein the notch portion is applied to a land of a P-plate, and the land dimension is measured depending on whether the land dimension and the notch dimension match. 2. A portion parallel to the cutout portion in the long side portion of the outer rectangle is shaved inward so that the width of the metal portion between the cutout portion and the long side portion of the outer rectangle is narrowed. 1. A P-plate land dimension measuring jig of the electronic control device described in 1. 3. A P-plate land dimension measuring jig for an electronic control device according to claim 1, wherein a metal of a material which is easily curved when a force is applied to both ends of a plate-like elongated rectangle. 4. A P-plate land dimension measuring jig for an electronic control device according to claim 1, wherein a hole is provided in the other portion having no notch. 5. A plurality of notches having different notch dimensions are provided on one side, and one part having no notch is joined together,
The P-plate land size measuring jig for an electronic control device according to claim 1, which is in the form of a single plate.