JPS6168877A - Method of producing slip ring assembly - 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 Industrial Application) The present invention relates to a method of manufacturing a slip ring assembly used in various devices using a rotating gyro.

(Prior Art) A slip ring assembly used in a device using a rotating gyro is a vertical slip ring assembly that slides around a cylinder.

As shown in FIG. 1, the vertical slip ring assembly has a flange 2 at the bottom of a support shaft 1 made of resin, and a plurality of slip rings 3 are integrally provided on the outer periphery above the flange 2 at uniform intervals, A reinforcing insulation coating core rod 4 is embedded,
An insulated lead wire 5 welded to the inner peripheral surface of the slip ring 3 is arranged around it, and the lead wire 5 is attached to the support shaft l.
It is derived from the lower end of .

(Problems to be Solved by the Invention) When manufacturing the slip ring assembly 6 having such a structure, in order to bundle the insulated lead wires 5, the core of the insulated coating is formed in the mold as shown in FIG. The insulated lead wires 5 are brought into contact with the outer circumferential surface of the rod 4 to bundle them, and then filled with resin, but the insulation coating material on the core rod 4 may peel off when the lead wires 5 are bundled. This caused an insulation failure. Further, the position of the lead wire 5 on the outer peripheral surface of the core rod 4 is not determined, and when the resin is filled, the lead wire 5 led out from the lower end of the support shaft 1 is disturbed.

(Object of the Invention) The present invention was made to solve such problems, and there is no occurrence of insulation failure of the reinforcing core rod, and the positioning of the lead wire on the outer peripheral surface of the core rod can be ensured. It is an object of the present invention to provide a method for manufacturing a slip ring assembly.

(Embodiment) An embodiment of the method for manufacturing a slip ring assembly of the present invention will be described below with reference to FIGS. 3a to 3f.
As shown in Figure a, a large number of semicircular recesses 7 are arranged on the outer circumferential surface (in this example, five recesses) in parallel in the longitudinal direction to form a sprocket-shaped cross-section. In the semicircular recess 7 on the outer peripheral surface of the resin core rod 8, as shown in FIG. The lead wires 11, which are pure fluorocarbon electric wires with bare ends welded and insulated, are fitted and positioned one by one as shown in FIG. 3C, and the other ends of the lead wires 11 are connected as shown in FIG. 3D. The slip rings 10 are guided out of the mold 9, and the slip rings 10 are arranged and set in the mold 9 at regular intervals. Next, the mold 9 is closed, and as shown in FIG. 3e, the mold 9 is filled with epoxy resin 12 to form a support shaft 13, and slip rings 10 are integrally formed at regular intervals around the outer periphery. Thereafter, it is taken out from the mold 9, the outer circumferential portion is cut by a predetermined amount, and the slip ring assembly 14 is obtained by polishing and finishing shaping.

(Effects of the Invention) As described above, in the method for manufacturing a slip ring assembly of the present invention, the core rod 8 made of insulating resin and having a sprocket-shaped cross section is used as the reinforcing core rod of the slip ring 14. When the wires 11 are bundled, the insulation coating of the core rod does not peel off as in the conventional case, and insulation defects do not occur. Furthermore, when the lead wires 11 are brought into contact with the outer peripheral surface of the core rod 8 and bundled, the lead wires 11 are fitted and positioned in the semicircular recesses 7 arranged in parallel on the outer peripheral surface of the core pJ8. The positioning of the lead wires 11 can be performed reliably and easily, and the work of aligning the lead wires 11 can be performed efficiently. Moreover, since the bundle diameter of one lead wire can be minimized, the epoxy resin 12
There are effects such as that the lead wire 11 led out from the lower end of the support shaft 13 is not disturbed when it is filled.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing a conventional slip ring assembly, Fig. 2 is a sectional view showing a state in which lead wires are bundled around the outer circumferential surface of a core rod in the slip ring assembly, and Fig. 3 a. FIGS. 1A to 1G are diagrams illustrating steps of a method for manufacturing a slip ring assembly according to the present invention. 7--Concavity, 8--1 Core rod, 9--1 Mold, 10--Slip ring, 11--Lead wire, 12--111 Epoxy resin, 13--Support shaft, 14--Slip/7 pull assembly. Applicant Tanaka Kikinzoku Kogyo Co., Ltd. Figure 1 Figure 2 Figure 3 (Q) (b) (c) Figure 3 Procedural amendment (method) % formula % 1. Indication of case Patent Application No. 85862 of 1982 2. Name of the invention Method for manufacturing a slip ring assembly 3. Relationship with the person making the amendment Patent applicant September 4, 1985 5. Subject of the amendment 4. Brief description of the drawings 6. Contents of the amendment

Claims (1)

[Claims] A core rod made of insulating resin with a sprocket-shaped cross section with many semicircular recesses lined up on its outer circumferential surface is set in the center of the mold, and then each inner circumference of a plurality of slip rings made of conductive material is placed in the center of the mold. A plurality of lead wires welded to the surface are fitted and positioned in semicircular recesses on the outer peripheral surface of the core rod, and the ends are led out of the mold, and each slip ring is arranged and set in the mold at regular intervals. Next, a mold is filled with resin to form a support shaft, slip rings are integrally formed on the outer periphery at regular intervals, and then the slip ring assembly is finished by cutting and polishing. Method.