JPH027480Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to an apparatus for attaching elements to a substrate.

(Prior art) Switching elements and other elements are temporarily assembled on a board that has been wired by conventional printed wiring or other means,
It is known that this is immersed in a solder bath to connect wiring provided on the board to the element.

(Problem to be solved by the invention) Conventionally, when temporarily assembling element B onto board A, a weight C is placed on the top surface of element B as a temporary assembly, and when element B is immersed in a solder bath, element B is affected by the buoyancy of the solder. It only serves to prevent the soldering work from floating up, and therefore, the weight c is generally removed at the same time as the soldering work is completed.

When such a board is assembled into a control box, there is a problem in that dust, etc. that enters through the transparent window provided in the control box for inserting the operator easily adheres to the surface of the board.

(Means for Solving the Problems) In view of the current situation, the present invention provides a device in which the temporary assembly remains as it is and functions as a dustproof device when the board is assembled into the control box. In this method, an element including a switching element or other operating element is temporarily assembled on a board arranged by printed wiring or other means, and this is immersed in a solder bath to connect the wiring applied to the board and the element. and a temporary assembly tool for temporarily assembling the element on the substrate,
It is constructed by comprising a flat element holding piece having a leg portion to be attached to the substrate and a through hole through which an operator of the element is inserted, and folding pieces rising from both sides of the element holding piece.

(Example) In the drawings, reference numeral 1 indicates a board that has been wired in advance by printed wiring or other means, and reference numeral 2 indicates an element including a switching element or other operating element 2a that is assembled on the board 1. The terminals 2b of each element 2 are inserted into the holes 3 and temporarily assembled using the temporary assembly tool 4. After applying flux only to the parts that require soldering, this is immersed in a solder bath. In this case, the wiring provided on the substrate 1 and each element 2 are connected.

The configuration up to now is not particularly different from what is conventionally known.

In such a case, the present invention provides the temporary assembly 4.
, a flat element holding piece 4c having a leg portion 4a fixed to the substrate 1, a through hole 4b through which the operator 2a of the element 2 is inserted, and folding pieces 4d rising from both sides of the element holding piece 4c. To explain this in detail, in the illustrated one, a large number of through holes 4b are provided along the longitudinal direction of the long element holding piece 4c, and both sides of the element holding piece 4c are provided with a plurality of through holes 4b. It is folded upward to form folded pieces 4d, 4d, and both ends of the element holding piece 4c are bent downward to form leg portions 4a, and notches 4e, 4e are formed on both sides of the leg portions 4a, 4a.
The substrate 1 was clamped and fixed in the notches 4e, 4e.

(Function) When doing this, the element 2 is placed at a predetermined position on the substrate 1, the rear legs 4a, 4a are used to bind the element 2 to the substrate 1, the element holding piece 4c is used to press the top surface of the element 2, and the element 2 is placed in a predetermined position on the substrate 1. When performing soldering work by immersing the element 2 in a solder bath, it is possible to prevent the element 2 from floating up due to the solder.

When this is assembled into the control box A as shown in FIG. 4, the front ends of the folding pieces 4d, 4d are assembled so as to come into contact with the back surface of the front plate 5 of the control box A.

In this case, even if dust or the like enters into the control box a through the through hole 5a provided in the front plate 5 for inserting the operator 2a, the element holding piece 4c
Furthermore, the through hole 5a can be surrounded by the folding pieces 4d, 4d, thereby preventing dust and the like from entering the substrate 1.

(Effects of the invention) As described above, according to the invention, the temporary assembly for temporarily assembling the element to the substrate is made of a flat plate having legs to be attached to the substrate and a through hole through which the operator of the element is inserted. Since it is configured to include an element holding piece and folding pieces rising from both sides of the element holding piece, the temporary assembly can be easily tied together using the legs, and the element can be held securely with the element holding piece. As a result, it is possible to reliably prevent the floating of the element when soldering it by immersing it in a soldering bath, and when assembling the board to the control box with the temporary assembly assembled, it is possible to The temporary assembly acts as a cover surrounding the through hole for inserting the element, and thereby has the effect of reliably preventing dust and the like from penetrating to the surface of the board.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing an example of the implementation of the present invention, Fig. 2 is an enlarged cross-sectional view of a part thereof, Fig. 3 is a perspective view of the temporary assembly, and Fig. 4 is the board. 5 is a sectional view taken along the line V-V, and FIG. 6 is a side view showing a conventional example. 1... Board, 2... Element, 2a... Operator, 4
...temporary assembly, 4a...leg, 4b...through hole, 4c
...Element holding piece, 4d...Folding piece.

Claims (1)

[Scope of utility model registration request] A device that temporarily assembles an element with a switching element or other operating element onto a board that has been arranged in advance by printed wiring or other means, and then immerses it in a solder bath to connect the wiring provided on the board and the element. A temporary assembling tool for temporarily assembling the element onto a substrate is provided with a flat element holding piece having legs for binding to the substrate and a through hole through which an operator of the element is inserted, and both sides of the element holding piece. An apparatus for attaching an element to a substrate, comprising a folding piece rising from the base.