JPS6057570B2 - Terminal mounting structure in movable mirror device - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is used in optical information recording and reproducing devices such as optical video disc players, and is applicable to movable mirror devices that reflect laser light, etc. in a predetermined optical axis direction. Regarding terminal mounting structure.

[Prior art]

As for the conventional terminal mounting structure, Utility Model Publication No. 50-75621
There was one disclosed in No. 53-44787.

In such a conventional terminal mounting structure, a substantially L-shaped terminal is inserted from one side of the terminal mounting member, and a lead wire is attached to a protrusion of the terminal that passes through the terminal mounting member.

However, in such conventional terminal mounting structures, the terminal mounting member requires a special structure in order to prevent the terminal from coming off from the terminal mounting member and to position the terminal.

Therefore, when this structure is applied to a movable mirror device, it has drawbacks such as not being easy to manufacture or having poor workability when attaching the terminals. [Summary of the Invention] The present invention has been made in view of the above drawbacks, and its purpose is to rotate a terminal connected to a lead wire of a coil section mounted on a movable section using a simple structure. It is an object of the present invention to provide a terminal mounting structure in a movable mirror device that can prevent lead wires from being disconnected due to breakage.

A terminal mounting structure in a movable mirror device according to the present invention includes a base on which a magnetic circuit is placed, a terminal hole provided in the base, a groove communicating with the terminal hole, and a flange in an intermediate part. A bent portion is formed by being bent at a substantially right angle at the boundary between the terminal hole and the groove, and the axial position is determined by the cooperation of the collar and the bent portion, which is caused by the bending. A terminal in which a portion orthogonal to the axial direction and a side surface of the groove cooperate to restrict rotation about the axial direction, and an end portion of the terminal opposite to the bent portion from the collar. It is characterized by having a lead wire attachment part provided between.

〔Example〕

A movable mirror device including an embodiment of the present invention will be explained below.

The movable mirror device basically includes a base 1, a permanent magnet section 2, a yoke 3, a plate 29, and a movable section 4.

At the rear of the base 1, a permanent magnet part 2 is magnetized with one end being magnetized to an N pole and the other end being magnetized to an S pole, and a pair of yokes 3 are fixed in contact with both ends of the permanent magnet part 2 in between. The movable part 4 includes a mirror part 6 adhered to a mirror substrate 22 made of aluminum or the like with double-sided tape or the like, an annular plate 21 made of aluminum or the like wrapped in a ring around the mirror substrate 22, and a mirror part 6 attached to the annular plate 21. A wound coil portion 7, a core portion 12 made of an elastic material such as rubber whose one end is fixed to the back surface of the mirror substrate 22, and a core portion 12 such as aluminum fixed to the core portion 12 near the free end of the core portion 12. The locking portion 11 is comprised of a locking portion 11 made of The plane 33 of the core 12 is
It does not cover the entire back surface of the mirror substrate 22, but is formed so that the back surface 28 of the mirror substrate 22 is exposed. A conical recess 26 and a V-shaped long groove 27 are formed on the plane 33, and a trapezoidal protrusion 25 is provided at the center.
Grooves 18 are formed in the left and right rear portions of the base 1, and the terminals 5
is inserted into a predetermined terminal hole, and the terminal 5 is inserted along the groove 18 at a position where the collar 20 formed integrally with the terminal 5 contacts the base 1.
is bent.

The lead wire 8 of the coil portion 7 is electrically connected to a lead wire attachment portion provided between the end portion of the terminal 5 protruding from the collar 20. That is, a predetermined terminal hole provided in the base 1 and the groove 18 are in communication with each other, and the terminal 5 having the collar 20 in the middle part is bent at a substantially right angle at the boundary between the terminal hole and the groove 18. . The flange 20 in contact with the base 1 and this bent portion cooperate to determine the axial position of the terminal 5 so that the terminal 5 does not come off the base 1. At the same time, the above-mentioned axial direction caused by bending occurs. A predetermined portion of the terminal 5 that intersects with the side surface of the groove 18 cooperates to fix the terminal 5 to the base 1 so as not to rotate. When a current is passed from the terminal 5 to the coil portion 7 via the lead wire 8, the electromagnetic force generated by the magnetic field formed via the permanent magnet portion 2, yoke 3, and plate 29 causes the tips of the screws 14, 17 to The movable portion 4 rotates in the direction of the arrow in FIG. 4 about an axis defined by a fulcrum formed by the V-shaped long groove 27 and the two receiving portions of the conical recess 26.

As a result, the optical axis direction of the beam reflected by the mirror portion can be changed in a predetermined direction. The rotation limit is determined by adjusting the screws 15 and 16 and moving them back and forth to change the position in contact with the plane 28 of the mirror substrate.
When current no longer flows through the coil portion 7, the elasticity of the core portion 12 causes the flexible portion 4 to return to its original position. [Effects] Since the terminal 5 is fitted into the groove 18 of the base 1, it does not rotate, and there is no risk that the lead wire 8 of the coil portion 7 will break once it is soldered to the terminal 5.

Moreover, since the terminal 5 is provided with the collar 20, the terminal 5 can be easily fixed to the base 1 by the collar 20 and the bent portion of the terminal 5.

Furthermore, terminal holes and grooves 18 provided in the terminal 5 and the base 1
Since it has a simple structure, it is easy to manufacture, and the workability when attaching the terminal is also good.

[Brief explanation of the drawing]

All figures show a movable mirror device including an embodiment of the present invention, and FIGS. 1 to 6 are a front view, right side view, bottom view, top view, rear view, and front view of the movable mirror device. Each represents a central longitudinal cross-sectional view. 1...Base, 2...Permanent magnet section, 3.
...Yoke, 4...Movable part, 5...
...terminal, 6...mirror section, 7...coil section.

Claims (1)

[Claims] 1. A terminal mounting structure for a movable mirror device capable of deflecting reflected light in a predetermined direction, which includes a base on which a magnetic circuit is placed, a terminal hole provided in the base, and a groove communicating with the terminal hole. , a flange is provided at the intermediate portion, and the flange is bent at a substantially right angle at the boundary between the terminal hole and the groove to form a bent portion, and the axial position is adjusted by the cooperation of the flange and the bent portion. A terminal in which rotation about the axial direction is regulated by a portion orthogonal to the axial direction produced by bending and the side surface of the groove cooperates with each other, and the terminal is bent from the flange in the terminal. 1. A terminal attachment structure for a movable mirror device, comprising: a lead wire attachment portion provided between the lead wire attachment portion and the end portion in the opposite direction.