JPS584196Y2 - Electric circuit storage case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric circuit storage case having a cable fixing function.

To explain this type of conventional electric circuit storage case using drawings, FIG. 1 is a vertical cross-sectional view of the right end, FIG. 2 is a view taken from the direction of arrow A in FIG. 1, and FIG. 3 is a view from FIG. Fig. 4 is a vertical sectional view of the left end, Fig. 5 is a view taken from direction B of Fig. 4.
In the figure, 1 is a cable for transmitting signals, 2 is an electric component mounting board on which an electric circuit is constructed, 4 is a lid, and 6 is a cylindrical case body.

The electric circuit storage case is composed of a case body 6 and a lid 4 that closes the openings at both ends of the case body 6, and a cable fitting 3 screwed onto the outer surface of the lid 4. The end of the cable 1 is fixed by caulking, and the electrical component mounting board 2 is screwed to board fixing fittings 5 etc. attached to the inner surface of the lid 4 and the inner wall of the case body 6, respectively. It is housed in 6.

Incidentally, the electric wire of the cable 1 is drawn into the case body 6 through a through hole formed in the lid body 4 and connected to the electrical component mounting board 2.

However, in electrical circuit storage cases with this configuration, the cable is fixed by caulking to the cable fixing bracket screwed to the lid, so if it becomes necessary to remove the cable for some reason, the cable should be fixed again afterwards. When fixing to metal fittings, caulking reduces the force, and caulking causes damage to the parts, making it difficult to perform the original function. It also has the disadvantage of low reliability.

Furthermore, since the electrical component mounting board is fixed by screwing using a board fixing fitting or the like, there are also drawbacks such as a large number of parts and a cumbersome assembly process.

The present invention was developed to solve these shortcomings, and allows for easy attachment and detachment of cables during assembly, as well as firm fixation, improved functionality and reliability, and improved electrical components. The object of the present invention is to provide an inexpensive electric circuit storage case that is easy to install and has a small number of parts.

In order to achieve this objective, the present invention provides a locking hole for fitting and locking the end of the electrical component mounting board in the lid that closes the opening of the case body, and also provides a locking hole on the outer surface of the lid. The fixing part is formed into a protruding shape, and a cable fixing piece that pairs with the cable fixing part is formed separately, and a groove having a wave-shaped protrusion for pressing and clamping the cable is formed on mutually opposing surfaces. do.

To explain the following with reference to the drawings, FIG. 6 is a cutaway view of the right end showing an embodiment of the electric circuit storage case according to the present invention, FIG. 7 is a view taken from the direction of arrow D in FIG. 6, and FIG. Fig. 6 is a view taken from direction C in Fig. 9, and Fig. 9 is a perspective view showing the assembly method. Main body, 1
3 is a lid that closes the opening of the case body 11. As shown in FIG.

This lid 13 is provided with a locking hole 14 corresponding to the end of the electrical component mounting board 8, and a cable fixing portion 8 is protruded from the outer surface of the lid 13.

9 is a cable fixing piece that covers this cable fixing part 8.
It is formed separately from the lid body 13, and can be fixed to the cable fixing part 8 by overlapping it with screws 15.

A groove having a wave-shaped protrusion 12 for pressing and holding the cable 7 is formed on the opposing surfaces of the cable fixing piece 9 and the cable fixing part 8, and the case body 11. The electric circuit storage case of the present invention is constituted by the lid 13, the cable fixing part 8 integrated with the lid, the cable fixing piece 9 mating with the cable fixing part 8, and the screw 15.

Although the figure shows only the right end of the electric circuit storage case, the left end also has the same structure.

The electrical circuit storage case thus constructed is inserted into the end of the cable 7 between the groove formed in the cable fixing part 8 integrated with the lid body 13 and the groove of the cable fixing piece 9, and the cable At the same time, the fixing piece 9 is fixed to the cable fixing part 8, and the cable 7 is pressed and clamped by the waveform protrusion 12 of each groove and fixed to the lid body 13, and the electric component mounting board is inserted into the locking hole 14 of each lid body 13. The assembly is carried out by fitting and locking both ends of the electrical component mounting board 10 into the case body 11. Here, the electric wire of the cable 7 is inserted through the through hole drilled in the cover body 4. It is drawn into the case body 6 and connected to the electrical component mounting board 10.

Note that the cable fixing portion 8 and the cable fixing piece 9 are not limited to the illustrated shapes, but may have other shapes as long as they can form grooves having the wave-shaped protrusions 12.

As explained above, in the present invention, the cable is fixed by being inserted between the cable fixing part and the cable fixing piece, which are integrally formed with the lid body that closes the opening of the case body that houses the electrical component mounting board. The cable fixing piece is attached to the cable fixing part with screws, so if it is necessary to attach or detach the cable during assembly, it can be easily attached or detached, and even if the cable is fixed again, it will not work as expected. can fully demonstrate its functions.

In addition, since the cable is clamped between the cable fixing part and the cable fixing part using screws, it is easy to adjust the force for fixing the cable, and the cable fixing part and the cable fixing piece have corrugated protrusions on their opposing surfaces. A groove is formed, and the cable is pressed and clamped by the wave-shaped protrusion within this groove, so the contact area with the cable can be increased.
Therefore, it becomes possible to fix the cable with strong force without damaging the surface of the cable, and the reliability of fixing is also improved.

Furthermore, since the electronic component mounting board can be fitted and locked into the locking hole provided in the lid body, installation is easy. Since it has two functions and the number of parts is smaller than the conventional one, the assembly work efficiency is improved and the product is inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing the right end of a conventional electric circuit storage case, Fig. 2 is a view taken from the direction of arrow A in Fig. 1, and Fig. 3 is a view taken from the direction of arrow B in Fig. 1. Figure 4 is a vertical sectional view showing the left end of a conventional electric circuit storage case, and Figure 5 is a vertical sectional view showing the left end of a conventional electric circuit storage case.
FIG. 6 is a cutaway view of the right end showing an embodiment of the electric circuit storage case according to the present invention; FIG.
The figure is a view from the direction of D in Fig. 6, and Fig. 8 is a view of C in Fig. 6.
FIG. 9 is a perspective view showing an assembly method. 7... Cable, 8... Cable fixing part, 9... Curved cable fixing piece, 10... Electric component mounting board, 12... Wave shaped protrusion, 13...
... Lid body, 14... Locking hole, 15. Bent screw.

Claims (1)

[Scope of utility model registration request] An electric circuit storage case comprising a cylindrical case body that houses an electric component mounting board on which an electric circuit is configured, and a lid body that closes openings at both ends of the case body. A locking hole corresponding to the end of the component mounting board is provided, a cable fixing part is formed to protrude from the outer surface of the lid, and a cable fixing piece is separately formed to pair with the cable fixing part, Grooves each having a wave-shaped protrusion are formed on the opposing surfaces of the cable fixing portion and the cable fixing piece, and both ends of the electrical component mounting board are fitted and locked into the locking holes of each cover body, so that the cable fixing portion and the cable fixing piece are fitted into the locking hole of each cover body. A case for storing an electric circuit, characterized in that the cable fixing piece is stacked and fixed on the cable fixing part so that the cable connected to the electrical component mounting board is pressed and clamped by the groove having the waveform protrusion. .