JPS583417Y2 - case - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an internally hollow case.

Generally, an internally hollow case is divided into at least two divided cases for convenience of molding, and a means is provided for assembling them with fastening members such as screws.

For example, when forming a main body case 1 of an electric razor or the like as shown in FIG.
There is also a structure in which the split cases 2 and 3 are fixed together by a U-shaped plate spring 7 that is locked in a locking groove 6 formed in the upper part of the split cases 2 and 3.

Although this allows the number of screws 5 to be used to be reduced, the case fastening fittings 4 corresponding to the size of the main body case 1 are required, which increases manufacturing man-hours and costs.

Separately, it has been devised to form a locking claw and a locking hole in the split case that can be detachably engaged with each other, but the amount of engagement wrap cannot be increased due to the convenience of attaching and detaching. , it may easily disintegrate if dropped.

The purpose of this invention is to create a case that can eliminate the above-mentioned drawbacks.

This invention provides split cases that are joined together to form a hollow case body, one split case is provided with a locking pawl, and the other split case is provided with a locking hole that locks with the locking pawl. A suppressing piece that elastically presses the locking pawl in the locking direction is formed, and the locking pawl is directed toward the locking hole on the contact surface of the locking pawl and the pressing piece. This feature is characterized by the formation of an inclined surface that guides the user.

Therefore, when the split case approaches in the opposite direction, the locking pawl and the pressing piece come into contact with each other, and the locking pawl locks in the locking hole due to the guiding action of the slope formed on the contact surface. Since the locking pawl is pressed in the locking direction by the pressing piece, the locking lamp amount at least eliminates the fear of splitting due to falling, reduces the number of parts, and improves assembly work efficiency. It is composed of

An embodiment of this invention will be described with reference to FIGS. 2 to 5, taking the case of an electric shaver as an example.

A pair of split cases 9 and 10, which are joined together to form a hollow case body 8, are molded from elastic plastic.

Two locking claws 11 located on the lower side and two locking pieces 12 located on the upper side are integrally formed on the front divided case 9 while protruding.

The locking claw 11 and the locking piece 12 have inclined surfaces 13 and 14.
is formed.

At the lower part of the split case 10 on the rear side, there are locking holes 15 for locking the locking claws 11 and elastic locking holes 15 for locking the locking claws 11.
A force is formed with the pressing piece 16 extending upward.

Further, the inner surface of the ceiling surface of the divided case 10 is provided with the locking piece 12.
It has a locking surface 17 that elastically locks onto the upper edge of the holder.

Furthermore, two recesses 18 are formed in the upper part of the divided cases 9, 100, one step down from both sides, and a hollow part 19 is formed below these recesses 18.

Bridge-shaped leaf springs 20 are provided to join the recess 18, and locking claws 21 are bent at both ends of the leaf springs 200 to resiliently lock into the cavity 19.

In such a configuration, first, the split case 9°100
The lower part is joined and the locking pawl 11 is brought into contact with the edge of the pressing piece 16, and due to the contact force, the locking pawl 11 is locked in the locking hole 15 by the guiding action of the inclined surface 13.

Then, when the upper parts of the divided cases 9 and 10 are joined, the locking piece 12 is elastically inserted and locked under the locking surface 1T by the guiding action of the inclined surface 14.

Furthermore, the case body 8 is assembled by locking the locking claws 21 of the leaf spring 20 to both ends of the cavity 19.

Although the assembly is performed in this manner, since the locking pawl 11 is locked in the locking hole 15 while being pressed by the pressing piece 16, it will not come off due to falling even if the amount of wrap is small.

The small amount of wrap also improves assembly workability.

In addition, the split case 9,100 can be made without using other parts.
The lower part can be assembled.

A locking claw 11, a locking hole 15, and a pressing piece 16 may be formed on the upper part of the divided cases 9, 100.

In this case, the locking piece 12 and the leaf spring 20 are not necessary.

Further, even if only the upper part (or lower part) of the divided cases 9, 100 is fixed with screws, the number of screws to be used is drastically reduced and the ease of assembly is improved.

Even in this case, the lower part (or upper part) of the divided cases 9, 100 is locked in the locking hole 15 with the locking claw 11 being pressed by the pressing piece 16, so that a disassembly accident due to falling can be reliably prevented. .

Since this invention is constructed as described above, a locking pawl and a locking hole that lock each other are formed in the split case in order to eliminate the case locking metal fittings, eliminate screws, or drastically reduce the number of screw tightening points. However, since the locking pawl is elastically pressed by the pressing piece and locks into the locking hole, it is possible to reliably prevent disassembly accidents due to falling, and while satisfying this condition, the number of parts can be reduced. This has the effect of improving assembly workability.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing a conventional example, Fig. 2 is a vertical side view showing an embodiment of this invention, and Fig. 3 is an A in Fig. 2.
- Horizontal sectional view of line A, Figure 4 is B-B in Figure 3
FIG. 5 is a longitudinal cross-sectional side view showing the connected state along lines, and a partial perspective view. 8...Case body, 9-10...Divided case, 11...Latching claw, 13...Slanted surface, 15... Locking hole, 16... Pressing piece.

Claims (1)

[Scope of utility model registration request] Split cases are provided which form a hollow case body when joined to each other, one split case has a locking claw, and the other split case has a locking hole that locks with the locking claw and the locking claw. a pressing piece that elastically presses the locking piece in the locking direction, and a slope that guides the locking pawl toward the locking hole on the contact surface between the locking pawl and the pressing piece; A case characterized by the formation of a surface.