JPH0766637B2 - Magnetic recording device - Google Patents

Description

The present invention relates to a mounting structure for a reference position detector for track-to-track movement of a magnetic transducer in a magnetic recording device.

[Prior Art] FIGS. 4 and 5 are views for explaining a conventional example. FIG. 4 is a front view showing an essential part of a reference position detecting mechanism for movement of a conventional magnetic converter, and FIG. It is a top view.

The carriage 12 equipped with the magnetic converter 11 is slidably engaged with the slide shaft 14 through a hole 12a formed in the carriage, and although not shown in the drawing, it receives a driving force from a step motor or the like. It is possible to move in the direction of the arrow in FIG. 5 and stop at any position depending on the step of the step motor.

Reference numeral 16 denotes a detector which is a general photo sensor having a pair of a light emitting element and a light receiving element built-in.
The reference numeral 2b serves to detect the reference position of the magnetic transducer 11 by blocking at a predetermined carriage movement position.

Further, the detector 16 is fixed to a mounting plate 20 by a screw 19, and is further positioned with respect to the frame body 13 in the direction of the arrow in FIG. 5 by a pair of elongated holes 20a formed in the mounting plate 20 and a screw 21. It is fixed so that it can be adjusted.

The electric signal input / output terminal 16b of the detector 16 is connected to the circuit board 17 via the lead wire 22 and the connectors 23a and 23b.

[Problems to be solved by the invention]

In the conventional reference position detector mounting structure having the above-described structure, lead wires and connectors must be used for electrical connection between the detector and the circuit board, which complicates the structure. Unnecessarily increase the size of the device to secure a space for routing the lead wires. Further, there is a manual operation of soldering the lead wire and the detector terminal, which causes a problem when the reliability of the device is lacking.

Also, in order to adjust the detection position of the reference track position,
Fine adjustment is required by moving the mounting plate fixed to the bottom floor of the frame with screws, and if further adjustment is required after the assembly of the main body of the device, remove the circuit board and perform the adjustment work. After that, the circuit board must be attached again, which requires a large number of steps.

Therefore, the present invention solves the above problems,
The purpose is to have a simple structure and high reliability,
An object is to provide a small-sized and inexpensive magnetic recording device.

[Means for solving problems]

A magnetic recording device of the present invention includes a frame of the magnetic recording device, a magnetic converter that moves to a predetermined track on a magnetic medium to perform recording and reproduction, and a detector that detects a reference track position of the magnetic converter. In the magnetic recording device provided with an electric circuit structure substrate for controlling the magnetic recording device, the detector is fixed to the electric circuit structure substrate and electrically connected to the electric circuit structure substrate, The electric circuit component board is configured to be slidable with respect to the frame body.

〔Example〕

FIGS. 1, 2 and 3 are views showing an embodiment of the present invention, and FIG. 1 is a front view showing a main part of a reference position detecting mechanism for movement of a magnetic transducer, and FIG. Is a side view, third
The figure is a plan view.

The carriage 2 on which the magnetic transducer 1 is mounted is a set of slide shafts 4 having both ends fixed to a frame 3 and a pair of slide shafts 4 having through holes 2b formed in a projecting portion 2a provided on the carriage 2. It is slidably engaged in the axial direction, and can be moved and stayed at an arbitrary position in the sliding direction, for example, by receiving the driving force of a step motor 5 having a rotation straight motion converting mechanism.

6 is a detector which is a photosensor having a pair of light emitting element and light receiving element built in the arm portion 6a, and a circuit configuration for driving the magnetic recording device by the electric conduction terminals 6b of the light emitting element and the light receiving element protruding from the detector 6. It is fixed so as not to move integrally by, for example, soldering while maintaining electrical continuity with the substrate 7.

The reference position detection function of the magnetic converter 1 of the detector 6 is achieved by a pair of slits provided in the arm 6a of the detector 6.
Change in the electric signal of the light receiving element by blocking the light emitted from the light emitting element transmitted through 6c to be received by the light receiving element at the slit position by the arm portion 2c of the carriage 2 at a predetermined carriage moving position. Can be reached by detecting.

The circuit board 7 is integrally fixed to the frame body 3 with screws 8 or the like, but both ends thereof are guided by the guide portions 3a of the frame body 3 in the axial direction of the slide shaft 4 (see The position can be adjusted with respect to the frame 3 by a fixed amount in the direction of the arrow in FIG. 3). It is possible to adjust the reference position of the magnetic converter 1 which is the detection position of the detector 6 by inserting a tool or the like and easily sliding the circuit component substrate 7 and fixing it to the frame body 3 with a screw. Furthermore, this adjustment work can be easily performed from the outside even after the device body is assembled.
Effective in reducing man-hours.

The above-mentioned embodiment is an example in which a photo sensor is used for the above-mentioned detector, but it is also possible to use a switch having a general mechanical contact as the detector, and to use a general magnetic-electric conversion element and a magnet in combination for the detection. It can be easily used as

Further, in the above-mentioned embodiment, the means for cutting off the light emission of the light emitting element of the detector is constituted by the arm portion provided on the carriage, but although it is not shown in the figure, the means for rotating the step motor or the like is the means. It is also possible to easily form the arm portion provided on the.

〔The invention's effect〕

As described above, according to the present invention, the frame of the magnetic recording device, the magnetic converter that moves to a predetermined track on the magnetic medium to perform recording and reproduction, and the reference track position of the magnetic converter are detected. In a magnetic recording device including a detector and an electric circuit forming substrate for controlling the magnetic recording device, the detector is fixed to the electric circuit forming substrate and electrically connected to the electric circuit forming substrate. With such a configuration, since the detector is directly fixed to the circuit board by a method such as soldering, there is no need for a special part to be fixed to the circuit board. Since it is not necessary to use the lead wires and connectors required for electrical connection with the circuit board, the structure is inexpensive and the structure is simple. It has the effect of simplifying the device size reduction of the required lost connection work to ensure the pace.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of a detector mounting structure in one embodiment of the present invention, FIG. 2 is a side view, and FIG. 3 is a plan view. FIG. 4 is a front view showing a main part of a conventional detector mounting structure, and FIG. 5 is a plan view. 1 ... Magnetic converter 6 ... Detector 7 ... Electrical circuit board

Claims (1)

[Claims] 1. A frame of a magnetic recording device, a magnetic converter for moving to a predetermined track on a magnetic medium for recording and reproduction, and a detector for detecting a reference track position of the magnetic converter.
In a magnetic recording device provided with an electric circuit forming substrate for controlling a magnetic recording device, the detector is fixed to the electric circuit forming substrate and electrically connected to the electric circuit forming substrate, A magnetic recording device, wherein the electric circuit board is configured to be slidable with respect to the frame.