JPS622699A - Electronic component mounting apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electronic component mounting device for mounting electronic components in electronic equipment such as a video tape recorder to a chassis base.

2. Description of the Related Art In recent years, with the rapid spread of video tape recorders, miniaturization and weight reduction of devices as well as rationalization for cost reduction have become important issues. Below is the drawing.

A device for attaching electronic components to a chassis board, which is used in a conventional video tape recorder, will be explained with reference to the following.

FIG. 4 is a perspective view of a conventional device for attaching electronic components of a video tape recorder to a chassis base. In Figure 4,
Electronic components such as an erasing head 2 and an audio control head 3 are arranged on the chassis base 1 as shown in the figure, with solid shafts 15 and 16 implanted in the chassis base 1 serving as pivot axes. .

Further, on the chassis base 1, there is provided a cassette for winding the magnetic tape in the cassette around the rotating magnetic drum 8 by a certain wrapping angle, and pulling out the tape to a position where the tape can be run along with it for recording and reproduction. A tape drawer member 9 is arranged. The erasing head 2 rotates around a solid shaft 15 implanted in the chassis base as a rotation support shaft so that the position at which it contacts the tape is on the travel trajectory of the tape pull-out member 9 when recording the tape. By making this possible, it is possible to avoid impact with the tape pull-out member 9. Furthermore, in order to enable the audio control head 3 to be positioned at a certain distance (X value) from the magnetic head of the rotating magnetic drum, the audio control head 3 can be moved and adjusted using the solid shaft 16 as a pivot axis. It is structured to do this.

A lead wire 17 connected to the erasing head 2 is tangential to a printed wiring board 21 disposed in a direction opposite to the direction in which the erasing head 2 is disposed with respect to the chassis base 1 . Further, a lead wire 19 connected to the audio control head 3 is similarly connected to a printed wiring board 21 via a connector 20.

Further, FIG. 6 shows that the erasing head 2 is further provided with an electromagnetic shield around the lead wire 17, which has an insulating layer on the conductor surround, in order to prevent self-current oscillation and the influence of electromagnetic interference from other sources. FIG. 3 is a side view of a shielded wire 22 having a layer coated thereon. Also, shielded wires may be attached to the audio control head in the same way.

Problems to be Solved by the Invention However, in the above-mentioned mounting structure for electronic components on a chassis base, lead wires whose shape and mounting state are difficult to determine are used, and the electronic components are mounted on the chassis around the mounting axis. Since it rotates on the base, extra lead wire length is required to accommodate the movement, and in some cases, the lead wire must be long enough to accommodate the movement. It is necessary to fix the wire onto the chassis base using a lead wire fixing member 18 as shown in FIG. For this reason, it is extremely difficult to automate the assembly, which results in poor productivity and also causes an increase in costs. Furthermore, the lead wire processing space is also a major obstacle to miniaturization and thinning of tape recorders.

In addition, in the case of the above-mentioned erase heads and audio control heads, shielding measures may be required to prevent other types of electromagnetic interference and self-current oscillation, which is a factor in increasing costs. This will become one of the challenges in reducing product costs in the future.

In view of the above-mentioned problems, the present invention simplifies lead wire processing, reduces the process of fixing the lead wires on the chassis base, and also reduces the lead wire processing space, making it possible to significantly reduce the size and cost of electronic equipment. The aim is to provide an electronic component mounting device that contributes to the development of electronic components.

Means for Solving the Problems In order to solve the above problems, an electronic component mounting device of the present invention comprises: a chassis base; a hollow shaft provided directly or indirectly on the chassis base; The lead wire connected to the electronic component passes through the hollow part of the hollow shaft, and the direction in which the electronic component is arranged with respect to the chassis base is It is designed to lead in the opposite direction.

Function: With the above-described configuration, the present invention can improve the conventional method for processing lead wires of electronic components mounted so that the center of rotation is a solid shaft embedded in a chassis base. In other words, the work of fixing the lead wires to the chassis base is reduced,
In addition, by reducing the space for processing the Nolito wire on the chassis base, it is possible to improve the assemblability of the electronic device, reduce costs, and downsize the electronic device. Moreover, by making the hollow shaft of a metal magnetic material or the like, it is possible to reduce the shield wires required for the lead wires of the electronic components mentioned above, and it is possible to reduce the cost of the equipment.

Embodiment Hereinafter, an electronic component mounting apparatus according to an embodiment of the present invention applied to a video tape recorder will be described with reference to the drawings. FIG. 1 is a perspective view of one embodiment of the present invention.

Note that the same parts as those explained in FIGS. 4 and 5 are given the same reference numerals. In FIG. 1, a hollow shaft (for example, SO3304, etc.) is installed directly on the chassis base 1.
It has an outer diameter of φ3~φ4FJl and a wall thickness of 0.2~Q, 4mm,
Electronic components such as an erasing head 2 and an audio control head 3 are attached so that a pivot shaft 4.6 (usually made by drawing or extrusion) serves as a pivot shaft. The lead wires 6 and 7 connected to the erasing head 2 and the audio control head 3 are guided into the hollow part of the hollow shaft 4° 5, which is the pivot axis of the electronic component, and are connected to the chassis base 1. The electronic component 2.3 is guided toward the printed wiring board 1o arranged in the opposite direction to the direction in which the electronic component 2.3 is arranged.

FIG. 2 shows the chassis base 1 of the erasing head 2 shown in FIG.
It is a sectional side view of the attachment structure to. The illustrated erasing head 2 is connected to a printed wiring board 10 by having its lead wire 6 inserted into a hollow portion of a hollow shaft 4 directly implanted in the chassis base 1 . In addition, 2 in Figure 2
A is a rotatable support for the erasing head 2, and 11 is a retaining washer.

FIG. 3 is a side cross-sectional view of the mounting structure of the erasing head 2, which uses a hollow shaft 25 indirectly implanted in the chassis base 1 as a pivot shaft. , hollow shaft 2
6. The member to be planted 12 and the connection connector 13 are integrated, and the integrated member is fixed to the chassis base 1 with screws 26, thereby connecting the lead wire 6 and the printed wiring board 1o at the bottom of the chassis. The workability of the connection has been improved.

Effects of the Invention As described above, the present invention includes a chassis base, a hollow shaft provided directly or indirectly on the chassis base, and an electronic component arranged such that the hollow shaft serves as a pivot shaft. and a lead wire connected to the electronic component is guided through the hollow part of the hollow shaft in a direction opposite to the direction in which the electronic component is arranged, with respect to the chassis base, It is possible to improve the method for handling lead wires of electronic components that have conventionally been mounted so that the center of rotation is a solid shaft embedded in a chassis base. That is,
The work of fixing the lead wires to the chassis base can be reduced.
Moreover, the lead wire processing space on the chassis base can be reduced, and it is possible to improve the assemblability of electronic equipment, reduce costs, and downsize the electronic equipment. Furthermore, by constructing the hollow shaft with a metal magnetic material or the like, a shielding effect against self-current oscillations and external electromagnetic waves is produced in the lead wire portion within the hollow shaft, and the shielding effect against self-current oscillation and external electromagnetic waves is generated. By shortening the lead wire portion, it is possible to omit shield wire treatment as shown in FIG. 5 in the conventional example, and it is possible to further reduce the cost of the equipment.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an electronic component mounting device according to a first embodiment of the present invention, FIG. 2 is a partial side sectional view of the first embodiment, and FIG. 3 is a second embodiment of the present invention. 4 is a perspective view of a conventional electronic component mounting device, and FIG. 5 is a side sectional view of another conventional example. 1.../Coconut base, 2...Erasing head, 3...Audio control head)
, 4, 5.25... hollow shaft, 6, 7...
・Lead wire, 10...Printed wiring board. /-11 Nyasi group, Z----, A friend, Rad 3-m-O nine control to 7F:, 4 Ku--Blint internal 6 East 2 group anti-high 21! Il! 31st! ! Go-ichi Hollow Selection Glaze 84 Figure 5

Claims (2)

[Claims] (1) A chassis base, a hollow shaft provided directly or indirectly on the chassis base, and an electronic component arranged such that the hollow shaft serves as a pivot axis, and the electronic component is connected to the electronic component. An electronic component mounting device characterized in that the lead wire is guided through the hollow part of the hollow shaft in a direction opposite to the direction in which the electronic component is arranged with respect to the chassis base. (2) The electronic component mounting device according to claim (1), wherein the hollow shaft is made of a magnetic material.