JPH0520374U - Electric appliance mounting device - Google Patents

Abstract

(57) [Summary] [Purpose] When attaching electrical equipment to the board, the key part of the mounting leg should be attached so that it cannot be separated from the board. [Configuration] A mounting hole through which the mounting leg is inserted is formed by cutting and raising. The cut and raised pieces form cut and raised pieces. The cut and raised piece covers the key portion. Since the mounting hole is cut and raised without being cut out, no scraps are generated. Therefore, the punched dust does not interfere with the processing of other holes.

Description

[Detailed description of the device]

[0001]

[Detailed industrial description]

 The present invention relates to an appliance mounting device.

[0002]

[Prior Art]

 To attach electrical equipment such as connection terminals, switches, relays, etc. to the board, provide a pair of mounting legs on the bottom of the electric device, insert these into the mounting holes formed on the board, and insert the key part at the tip of the mounting leg. The mounting is performed by engaging the periphery of the mounting hole on the outer surface of the substrate.

However, according to such an attaching means, since the key portion at the tip of the attaching leg is present so as to project to the outer surface of the substrate, it is easy to contact an external foreign matter, and therefore the key portion is attached to the base plate. There is a risk of disengagement and detachment of the appliance from the board.

There are also the following problems. That is, holes are punched in the substrate for other purposes. During this process, since a return occurs at the periphery of the hole, press it from above with the outer surface facing up so that the return does not appear on the outer surface of the substrate, that is, it appears on the inner surface (the surface to which the appliance is attached). It is designed to be processed by the on mold of. If this is done, a return will occur on the inner surface.

On the other hand, as described above, when the key portion of the mounting leg is inserted into and engaged with the mounting hole formed in the board, the surface of the key portion is engaged in the return generated when the mounting hole is processed. In some cases, it is required to strengthen the attachment state by combining them.

For that purpose, when the mounting hole is pressed, it may be processed from the inner surface to the outer surface of the substrate by an on-die, which is advantageous because the outer surface of the substrate is bent.

However, as described above, if the press working of the mounting hole is to be incorporated into the press working system which is already performed with the outer surface of the substrate facing upward for working of the other hole, it is necessary to process the mounting hole. On-die must be done from below the substrate to the top. This allows the return to occur on the outer surface of the substrate.

However, when the mounting hole is pressed in this way, the cut-out scrap remains on the substrate (inner surface of the substrate). If this is left on the substrate as it is, it may interfere with other press work and hinder the work.

[0009]

[Problems to be solved by the device]

 It is an object of the present invention to prevent detachment of mounting legs when mounting an electric appliance on a board and prevent the formation of mounting holes from interfering with the processing of other holes.

[0010]

[Means for Solving the Problems]

 According to the present invention, a pair of mounting legs are provided on the bottom of an electric appliance, the mounting legs are inserted into a mounting hole formed in a board, and the key portion at the tip of the mounting leg is engaged with the peripheral edge of the mounting hole. In a mounting device that is mounted so that the key part engages with the barb generated when forming the hole, the mounting hole through which the mounting leg is inserted is cut and raised without being cut out so that a cut and raised piece is generated. It is characterized in that it is formed in.

[0011]

[Action]

 When the mounting hole was machined, it was cut and raised without cutting, so that the cut piece remains. Therefore, this cut-and-raised piece covers the key portion of the mounting leg that is inserted into this mounting hole, and this cover protects the key portion and prevents the key portion from being detached from the substrate due to collision with a foreign substance.

Further, in processing the mounting hole, even if the on-die is worked from below the substrate so as not to cut it, no scrap is generated. Therefore, the scrap does not interfere with the processing of other holes.

[0013]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. 1 is an electric appliance, 2 is a substrate to which the electric appliance 1 is attached, 3 is an inner surface thereof, and 4 is an outer surface thereof. The electric appliance 1 is provided with a pair of mounting legs 5 on the bottom thereof, and each mounting leg 5 is provided with a key portion 6 that is bent outward. FIG. 2 shows an example in which a plurality of pairs of mounting legs 5 are mounted.

A mounting hole 7 for inserting the pair of mounting legs 3 and a hole 8 for other purposes are formed in the substrate 2 by pressing. In processing these, the outer surface 4 of the substrate is sent to a press machine with the outer surface facing upward, and when the hole 8 is processed, the on-die is operated from above the substrate. When processing the mounting hole 7, an on-mold for that purpose is operated from below the substrate.

At the time of this processing, cutting is performed without cutting. The cut-and-raised pieces 9 are formed by the cut-and-raised parts. Further, this causes a return 10 (see FIG. 3) to occur on the outer surface of the substrate at the peripheral edge of the mounting hole 7.

The pair of mounting legs 3 are formed so as to be inclined so that both ends thereof are widened toward the end. When mounting the mounting legs 3 to the substrate 2, the mounting legs 3 are pressed and contracted so that the distance between the tips of the mounting legs 3 becomes narrow, and the mounting legs 7 are inserted in this state.

When the key portion 6 passes through the mounting hole 7, the mounting leg 3 spreads outward due to the restoring elasticity, so that the key portion 6 engages with the peripheral edge of the mounting hole 7. Then, the upper surface of the hammer portion 6 bites into the barb 10 at the periphery of the mounting hole 7 so as to be engaged. The key portion 6 is covered by the cut and raised piece 9.

Although the cut-and-raised pieces 9 are bridge-shaped in FIGS. 1 to 4, instead of this, the cut-and-raised pieces 9 may be separated from one end as shown in FIG.

[0019]

[Effect of the device]

 As described above in detail, according to the present invention, when the mounting leg of the electric appliance is inserted into the mounting hole of the board and mounted, the key portion of the mounting leg can be covered with the cut-and-raised piece, and the mounting hole There is an effect that the mounting hole can be formed in the peripheral edge so as not to interfere with the processing of other holes and to cause the return.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a mounting state of mounting legs.

FIG. 3 is a cross-sectional view showing a state in which a mounting leg is inserted.

FIG. 4 is a side sectional view of FIG.

FIG. 5 is a perspective view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Electric Appliance 2 Board 3 Inner Surface 4 Outer Surface 5 Mounting Leg 6 Key Part 7 Mounting Hole 9 Cut and Raised Piece 10 Return

Claims (1)

[Scope of utility model registration request] 1. A pair of mounting legs is provided on the bottom of the electric device,
The mounting leg was inserted into a mounting hole formed in the substrate, the key portion at the tip of the mounting leg was engaged with the peripheral edge of the mounting hole, and the surface of the key portion was generated during processing of the mounting hole. An electric appliance mounting apparatus which is engaged with a return member, wherein the mounting hole, through which the mounting leg is inserted, is formed so that a cut and raised piece is formed by cutting and raising the mounting hole.