JPH0445277Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Field of Industrial Application" The present invention relates to a chassis structure for a CATV casing.

``Prior Art'' A CATV housing 101 is attached to a pillar or a messenger wire 102 as shown in FIG. 6, and a chassis 103 is housed in the housing 101 as shown in FIG. 7 for signal transmission. connected by cable. If an abnormality occurs inside the casing 101, it is difficult to replace the casing 101 itself because it is attached to the pillar or messenger wire 102, so it is necessary to replace the chassis 103 inside the casing 101. There is. As shown in FIG. 7, the chassis 103 for the CATV case is constructed by laminating an upper metal plate 111, a printed circuit board 112, and a lower metal plate 113 in order with spacers interposed therebetween, and is U-shaped in plan view with an opening in the center of one side. base unit 11
4 and an amplifier section unit 115 that is T-shaped when viewed from the front.The amplifier section unit 115 is fitted into the opening of the base section unit 114 from above, and the plug 116 on the edge of the opening of the printed circuit board 112 and the amplifier section unit 115 are connected to each other. The base unit 115 is supported by the printed circuit board 112 by fitting the plug 117 on the lower surface of the engagement.

"Problems to be Solved by the Invention" In the conventional chassis 103 for the CATV case as described above, since the base unit 114 has an opening in the center of one side when viewed from above, the amplifier unit 115 is located in the opening. If it is fitted and supported, bending and distortion will occur, making it inconvenient to attach and remove from the housing 101 and handle, and the fitting of the plug 117 may be poor, making it difficult to connect the base unit 114 and the amplifier unit 115. .

``Means to be solved by the invention'' In view of the above-mentioned circumstances, the present invention eliminates bending and distortion of the base unit, allows smooth attachment and detachment to the housing, and also allows easy attachment and detachment of the amplifier unit. In order to ensure the connection between the base unit and the amplifier unit, a reinforcing member is attached in the shape of a rectangular frame to the opening edge of the base unit.

``Function'' A reinforcing member is attached in the shape of a rectangular frame to the opening edge of the base unit to support the amplifier unit, so there is no bending or distortion of the base unit.

Embodiment As shown in FIG. 1, the chassis consists of a base unit 1 and an amplifier unit 2.

The base unit 1 includes an upper metal plate 11, a printed circuit board 12, and a lower metal plate 13, which are connected in order by spacers 3,
4, and is U-shaped with an opening in the center of one side when viewed from above. The amplifier unit 2 is T-shaped when viewed from the front. The amplifier section unit 2 is fitted into the opening of the base section unit 1, and the plug 14 on the edge of the printed circuit board 12 and the plug 15 on the lower surface of the engagement section of the amplifier section unit 2 are fitted together.

Here, a reinforcing member is attached to the opening edge of the base unit 1 in the shape of a square frame.

On the side where the plug 14 is arranged, as shown in FIG. A contact piece 23 , a holding piece 24 that contacts the upper surface of the lower metal substrate 13 , a vertical piece 25 that connects the support piece 22 and the abutment piece 23 , and the abutment piece 2
3 and a vertical piece 26 that connects a holding piece 24, and is formed in steps. The supporting piece 22 is screwed to the upper metal plate 11 and the holding piece 24 is screwed to the lower metal plate 13 with screws 27 and 28, respectively, and the abutting piece 23 is screwed together with the printed circuit board 12 using a plug 14.

The side on which the plug 14 is not placed is supported by reinforcing members 31 and 32 made of metal plates, respectively, as shown in FIG. The reinforcing member 31 has a horizontally bent supporting piece 34 and an abutting piece 35 at the upper and lower ends of the vertical piece 33, respectively.
Bring the top surfaces into contact and tighten with screws 36 and 37. Similarly, the reinforcing member 32 has a support piece 39 and an abutment piece 40 bent horizontally at the upper and lower ends of the vertical piece 38,
The lower surface of the upper metal plate 11 and the upper surface of the lower metal plate 13 are brought into contact with each other and screwed with screws 41 and 42, and the tongue piece 43 cut and raised from the vertical piece 38 is brought into contact with the printed circuit board 12 and screwed with the screws 43. Screw on.

In the example shown in FIG. 4, when mounting an electronic component on the joint part of the printed circuit board 12 with the reinforcing member 51, a horizontal piece 52 is provided so that it does not come into contact with it but is separated from the other, and a tongue piece 54 cut and raised from a vertical piece 53 is installed. It is also possible to support the printed circuit board 12 and tighten it with screws 55.

FIG. 5 shows an example in which the number of connection parts between the base unit 1 and the amplifier unit 2 is three. When the number of connection parts increases in this way, the effect of the reinforcing member 61 becomes greater.

``Effects of the invention'' As mentioned above, in this invention, a reinforcing member is attached in the shape of a square frame to the opening edge of the base unit.
The base unit is not bent or distorted, and can be smoothly attached to and removed from the housing. Furthermore, the amplifier unit can be easily attached and detached, and the connection between the base unit and the amplifier unit can be ensured.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a specific embodiment of the present invention, Fig. 2 is a cross-sectional view of Fig. 1, Fig. 3 is a cross-sectional view of Fig. 1, and Fig. 4 is a longitudinal cross-section of another embodiment. side view,
Fig. 5 is a longitudinal sectional view of yet another embodiment, Fig. 6 is a perspective view of the CATV casing attached to the messenger wire, and Fig. 7 shows the state in which the chassis is housed in the CATV casing. FIG. 11...Top metal plate, 12...Printed circuit board, 1
3... Lower metal plate, 3, 4... Spacer, 1... Base unit, 2... Amplifier unit, 14
...Connection, 15 ...Connection, 21, 31, 32, 5
1,61...Reinforcement member.

Claims (1)

[Scope of utility model registration request] An upper metal plate, a printed circuit board, and a lower metal plate are laminated in order through a spacer, and are divided into a U-shaped base unit with an opening in the center of one side when viewed from above, and an amplifier unit that is T-shaped when viewed from the front. Then, fit the amplifier unit into the opening of the base unit from above, fit the connector on the edge of the opening on the printed circuit board and the connector on the lower surface of the amplifier unit, and support the base unit with the printed circuit board. A chassis structure for a CATV casing comprising a reinforcing member in the shape of a rectangular frame attached to the edge of the opening.