JPH054314Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to frames for high-frequency equipment such as CATV and tuners.

BACKGROUND ART Conventionally, a frame shown in FIG. 10 has been used to accommodate amplifiers, mixers, tuning circuits, etc. in high frequency equipment such as CATV and tuners. As shown in Fig. 11, this product is punched out from a single metal plate in the unfolded state.
Long side side pieces 10, 10 and shield plate 20,
After erecting 20, 20, side piece 1 in the short side direction
5 and 15 are also stood up, the short parts of the side pieces 10 and 15 are butted together, the protruding piece 10a of the side piece 10 is inserted into the slit 15a of the side piece 15, and the protruding piece 10a is caulked with the caulking head 30. , side piece 10,1
5 was joined. Figures 12a, 12b and 12c show details of such a joining process.

Problems that the idea aims to solve By the way, regarding the above frame, the 13th problem
As shown in the figure, since the two-pronged caulking heads 30, 30 are moved from both ends of the frame in the directions of arrows A and A to simultaneously caulk the four projections 10a at four locations, the side pieces 10, 10 are attached in the longitudinal direction. When compressive force is applied, the side pieces 10, 10 are bent outward, as shown in FIG. There is. Moreover, the crimping head 30 is driven by a cam slider system, which has the problem that the mold is complicated and expensive.
Furthermore, if there is a gap between the side piece 10 and the shield plate 20, there is a problem in that soldering defects occur when dip soldering is performed with circuit components housed within the frame.

Means for Solving the Problems Therefore, in the frame of a high-frequency device according to the present invention, a slit is formed at the end of one adjacent side piece, and a slit is inserted into the slit at the end of the other side piece. Two protruding pieces of different lengths are provided, the ends of both pieces are butted together, the two protruding pieces are inserted into the slit, and the longer protruding piece is placed in the longitudinal direction of the slit and opposite to the shorter protruding piece. By deforming the longer protruding piece in the direction, the longer protruding piece is pressed into contact with and engaged with one edge of the slit, and the repulsive force caused by the deformation of the longer protruding piece causes the shorter protruding piece to be pressed against the other edge of the slit. It is characterized by being pressed and engaged with.

Function In the above configuration, adjacent side plates can be joined and fixed by deforming the longer of the two protrusions inserted into the slit, and at that time, the side plates can be joined and fixed in the longitudinal direction with respect to the side pieces. There are no compressive forces and no outward deflection of the side pieces. Further, the two protruding pieces come into pressure contact with and engage with the edges of the slit, improving the joint strength between the side pieces.

Embodiment In FIG. 1, 10 is a side piece in the long side direction, and at its end there are two protruding pieces 1 located above and below.
1 and 12 are provided, and the lower protruding piece 12 protrudes longer than the upper protruding piece 11. Further, in FIG. 2, reference numeral 15 denotes a side piece in the short side direction, and a slit 16 extending in the vertical direction is formed at the end of the side piece.
It can be inserted into

To join the side pieces 10 and 15, as shown in FIG. It is inserted into the slit 16 (see FIGS. 3 to 6).

Then, as shown in FIG.
The projecting piece 11 is deformed in the opposite direction. With this,
As shown in FIGS. 7 and 8, the protrusions 11 and 12 are pressed against and engaged with the upper and lower edges of the slit 16.

Incidentally, it goes without saying that the side pieces 10 and 15 are joined and fixed at four locations as in the prior art.

In the above embodiment, the force that deforms the projecting piece 12 only acts in the direction of arrow B in FIG. 4, and the side piece 10 does not bend in the longitudinal direction. Moreover, the protrusions 11, 12 and the slit 16 directly engage with each other, and the protrusion 12 sinks into the lower edge of the slit 16, thereby improving the joint strength of the side pieces 10, 15.

9a and 9b show a modification of the slit 16 provided at the end of the side piece 15. FIG.

FIG. 9a shows an inclined surface 1 on the upper and lower edges of the slit 16.
6a, 16b are formed, and the one shown in FIG. 9b is the one in which an inclined surface 16b is formed at the lower edge of the slit 16. This improves the penetration and further strengthens the joint strength.

Effects of the invention As is clear from the above explanation, according to the invention,
Insert the two protrusions of different lengths provided at the end of the other side piece into the slit formed at the end of the other side piece, and then The two protrusions are formed in the longitudinal direction of the slit in the opposite direction to the shorter protrusion so that the two protrusions engage with the edge of the slit, which eliminates the complicated and expensive cam slider type described above. There is no longer a need for caulking, the side pieces do not bend due to compressive force in the longitudinal direction, the positioning accuracy of the shield plate does not go out of order, and there is no time consuming correction. The attachment is also good. Further, the protruding piece and the slit are directly pressed and engaged, and the joint strength between the side pieces is improved.
Furthermore, since one protrusion is formed short,
This does not interfere with the processing when deforming the longer protruding piece, and the processing device can have a simple configuration.

[Brief explanation of the drawing]

1 to 7 show an embodiment of the frame according to the present invention, FIG. 1 is a front view of the side piece in the long side direction, FIG. 2 is a front view of the side piece in the short side direction, FIG. Fig. 4 is a perspective view during the assembly process, Fig. 5 is a front view similarly during the assembly process, Fig. 6 is a sectional view taken along line XX in Fig. 5, Fig. 7 is a perspective view after assembly, and Fig. 8 is a perspective view during the assembly process. The figure is a sectional view after assembly. FIGS. 9a and 9b are front views showing other modifications, respectively. Figures 10 and below show conventional frames; Figure 10 is a perspective view of the frame after assembly; Figure 11 is a perspective view of the frame during assembly; Figures 12a, 12b, and 12.
Fig. c is a front view showing the crimping process, Fig. 13 is a perspective view showing a similar crimping process, and Fig. 14 is a plan view of the deformed frame. 10...Side piece, 11...Protrusion piece, 12...Protrusion piece,
15...Side piece, 16...Slit.

Claims (1)

[Claims for Utility Model Registration] In a frame for a high-frequency device that has a substantially rectangular frame shape and is formed by joining the ends of adjacent side pieces, a slit is formed at the end of one of the adjacent side pieces, and Two protruding pieces of different lengths that can be inserted into the slit are provided at the ends of the other side piece, the ends of both side pieces are butted together, the two protruding pieces are inserted into the slit, and the longer protruding piece is inserted into the slit. By deforming in the longitudinal direction opposite to the shorter protrusion, the longer protrusion is pressed into contact with and engaged with one edge of the slit, and the repulsion caused by the deformation of the longer protrusion A frame for high-frequency equipment, characterized in that the shorter protruding piece is pressed and engaged with the other edge of the slit by force.