JP2552184Y2 - Contactor for laser diode socket - Google Patents

Description

[Detailed description of the invention] "Industrial application field" In the invention, for example, in a laser diode test apparatus, the laser diode is mounted on a socket mounted on a carrier and transported, and at a predetermined position, the sleeve of the socket is mounted. The present invention relates to a contactor for a laser diode socket that is used to make electrical contact with a laser diode by making contact with a (terminal pin).

[Prior Art] FIG. 4 shows a conventional contactor for a laser diode socket. A laser diode socket 12 is mounted so as to cover the opening of the carrier 11, and a laser diode 13 is mounted on the socket 12, that is, a lead of the laser diode 13 is inserted into a metal sleeve (terminal pin) 14 protruding from the bottom of the socket 12. (Terminal) 15 is inserted and connected. When the carrier 11 is carried at a predetermined position, the contactor
When the cylinder 16 is pushed up by the cylinder 17, the upper end surface of the contact 18 of the contactor 16 elastically contacts the lower end surface of the sleeve 14. That is, in the conventional contactor 16, the metal tube 21 is embedded in the insulating material main body 19, the upper end surface of the tube 21 appears on the upper surface of the main body 19, and the contact 18 is housed in the tube 21 so as to be freely accessible, and the contact 18 is a tube. It is biased by a coil spring 22 inside 21 so as to protrude upward. The contact 18 has a notch on the upper end surface. When the main body 19 is pushed up, the upper end surface of the contact 18 elastically comes into contact with the corresponding lower end surface of the sleeve 14, and a so-called hogo pin is formed in which the contact 18 is pulled into the tube 21.

"Problem to be solved by the invention" Because the conventional contactor 16 obtains electrical conduction by contacting the upper end surface of the contact 18 with the lower end surface of the sleeve 14,
If dust adheres to the upper end surface of the contactor 16, good electrical continuity cannot be obtained, and if the lower end surface of the sleeve 14 or the upper end surface of the contactor 16 is oxidized, poor contact will result. Since the pogo pins allow the contacts to move in and out of the tube, and bias the contacts upward by the coil springs in the tube, the tube 21 cannot be made too thin, and the center interval between the contacts 18 can be reduced. If the distance between the sleeves 14 is reduced, the conventional contactor 16 cannot be used. Further, although the contact pressure is obtained by the coil spring 22, there is a disadvantage that the life of the coil spring 22 is short.

According to the invention, a socket is mounted so as to close an opening of a carrier, and a lead of a laser diode mounted on the socket is inserted and connected into a metal sleeve protruding from the socket. When the carrier is carried to a predetermined position, the contactor is pushed up and the contact is elastically contacted with the sleeve.The contactor for a laser diode socket includes: a body of an insulating material having a center hole; A movable body that is inserted in and out of the body, protrudes from one end surface of the body, and has an outer periphery having substantially the same size as the outer periphery of the sleeve; and a movable body housed in the center hole and biasing the movable body outward. One end is attached to an outer peripheral portion of the body, and the other end is pressed against an outer peripheral surface of a protruding portion of the movable body. When the contactor is pushed up, the protruding end face of the movable body abuts without shifting with the protruding end face of the sleeve, and the movable body is in contact with the body. Pull in,
The plurality of contacts are in contact with the side surface of the sleeve.

FIG. 1 shows an embodiment of the present invention. Body of insulating material31
A central hole 32 is formed at an axial center position of the body 31.
, And a stopper 33 is formed in a brim shape on the inner periphery of the upper end. A movable body 34 is inserted into the center hole 32 so as to freely enter and exit, and the movable body 34 protrudes from the upper end surface of the body 31. A coil spring 35 is interposed between the lower end surface (inner end surface) of the movable body 34 and the bottom surface of the center hole 32, and the movable body 34 is biased by the coil spring 35 in a direction to escape upward from the body 31.
The flange 36 on the outer periphery of the lower end of the movable body 34 is engaged with the retaining 33 to prevent the movable body 34 from falling off. As shown in FIG. 2, the movable body 34 is formed by bonding an upper half 34a of an insulating material and a lower half 34b of a metal material. The bottom plate 31a of the body 31 is a separate body, and the lower end of the center hole 32 is closed by the bottom plate 31a. Insert the central projection 37 of the bottom plate 31a into the center hole 32, press-fit a common pin 38 from the side,
It is fixed to the body of 1. The shaft 39 of the cylinder 17 is inserted into a hole formed on the bottom surface of the body 31, and is fixed with a screw 41.

The lower ends of the plurality of contacts 42 are attached to the outer peripheral portion of the body 31 around the center hole 32, and the upper ends of the respective contacts 42 are pressed against the outer peripheral surface of the protrusion of the movable body 34. Each contact 42 is made of a leaf spring. For example, a contact receiving groove
43 is formed vertically, the contact 42 is arranged in the contact accommodating groove 43, the lower end thereof is brought into contact with the bottom surface of the groove 43, and the holding plate 44 is fitted into the groove 43 outside thereof, The child 42 and the holding plate 44 are bonded to the body 31. The lower end of the contact 42 is bent outward and extended to form a terminal 42a. A space is provided between the contact 42 and the bottom surface of the groove 43 above the portion of the contact 42 pressed by the pressing plate 44. The upper half of the contact 42 is bent so as to approach the axis of the body 31 and is relatively strongly pressed against the outer peripheral surface of the movable body 34. The upper end of the contact 42 is slightly bent outward. The width of the upper half of the contact 42 is smaller than that of the lower half.

As shown in FIG. 1, a laser diode 13 is mounted on a laser diode socket 12 fixed to a carrier 11,
When the carrier 11 is carried to a predetermined position, the body 31 is pushed up by the cylinder 17 and the upper end surface of the movable body 34 comes into contact with the lower end surfaces of the plurality of sleeves 14 at the same time. At this time, the size of the movable body 34 is made so that the entire outer circumference formed by the plurality of sleeves 14 and the outer circumference of the movable body 34 are substantially the same size, and the angular interval of the plurality of sleeves 14 and the contact 42 The angular intervals are equal and the angles are adjusted as a whole. Therefore, when the body 31 is further pushed up as shown in FIG.
34 retracts into the body 31 against the biasing force of the coil spring 35, and the upper end of each contact 42 rides on the outer peripheral surface of the corresponding sleeve 14. In this case, since the contact 42 is pre-loaded, the contact 42 can be brought into contact with the sleeve 14 with a contact pressure of, for example, about 100 g with a small change in the contact pressure with respect to the displacement, and a good electrical contact. Is obtained. When the shaft 39 of the cylinder 17 is retracted, the movable body 34 protrudes from the body 31, and the upper end of the contactor 42 moves to the outer peripheral surface of the movable body 34.

When the movable body 34 comes into contact with the plurality of sleeves 14, the upper half portion 34 prevents the sleeves 14 from being electrically short-circuited.
a is an insulating material, and the lower half portion 34b is made of a metal material to improve the slidability with the body 31 and prevent static electricity from being generated.

"Effects of the invention" As described above, according to the invention, the contactor 42 moves while rubbing the outer peripheral surface of the sleeve 14.
There is no possibility that dust is interposed between the side surface of the contact member and the contactor 42, and the contact members are polished with each other. Therefore, there is no possibility that the contact surface is oxidized, and good electrical contact is always obtained.

Since the preload is applied to the contact 42, a strong contact pressure is obtained, and good contact is also performed from this point. Moreover, since the contact 42 hardly displaces, the stress amplitude is small,
The life of the contact 42 is long. Since the sleeve 14 comes into contact with the peripheral surface of the sleeve 14, even if the sleeve 14 has a tapered lower end, good contact can be obtained. Even if the number of the sleeves 14 is large and the interval is small, the distal end of the contact 42 can be used by being narrowly focused.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, FIG. 3 is a sectional view showing a state in which the embodiment of the present invention is brought into contact with a sleeve, and FIG. It is sectional drawing which shows a contactor.

Claims (1)

(57) [Scope of request for utility model registration] 1. A socket is mounted so as to close an opening of a carrier, a lead of a laser diode mounted on the socket is inserted and connected into a metal sleeve protruding from the socket, and the carrier is positioned at a predetermined position. The contactor is pushed up to make the contact resiliently contact the sleeve. The contactor for a laser diode socket has a body made of an insulating material having a center hole, and is inserted into the center hole so as to be able to move in and out of the body. A movable body protruding from the end face and having an outer periphery substantially the same size as the outer periphery of the sleeve; a coil spring housed in the center hole and biasing the movable body outward; and an outer periphery of the body A plurality of contact members each having a leaf spring having one end attached to the portion and the other end pressed against the outer peripheral surface of the protruding portion of the movable body. When the contactor is pushed up, the protruding end face of the movable body abuts without shifting with the protruding end face of the sleeve, the movable body is pulled into the body, and the plurality of contacts are A contactor for a laser diode socket that contacts the side of the sleeve.