JPH0314013Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use The present invention relates to an adsorption structure for magnetic parts used when assembling magnetic parts to electrical or mechanical parts.

Conventional technology For example, a non-resettable temperature fuse, which is used in a wide range of fields as an overtemperature rise prevention device for electrical equipment, incorporates a spring, which is a magnetic component. A suction structure is used. Therefore, before explaining the conventional adsorption structure, the outline of a non-resettable temperature fuse will first be explained with reference to FIG. 6 as follows.

In FIG. 6, 1 is a cylindrical metal case made of copper or the like, 2 is a first lead wire whose one end is hermetically caulked to one open end of the metal case 1, and is electrically and mechanically connected; is a temperature-sensitive pellet inserted into one end sealed with the first lead wire 2 of the metal case 1. This pellet is made by compression molding an insulating chemical powder into a cylindrical shape, and is solid at room temperature and It melts when the temperature rises to a certain temperature. 4 is a fixed contact that faces the temperature-sensitive pellet 3 at a constant interval within the metal case 1, and 5 is arranged between the temperature-sensitive pellet 3 and the fixed contact 4 so as to be able to slide on the inner peripheral surface of the metal case 1. A movable contact, 6, a first spring for a closed circuit, 7 compressed and inserted between the temperature-sensitive pellet 3 and the movable contact 4;
8 is a circular press plate inserted between the first spring 6 and the temperature-sensitive pellet 3; 8 is a circular press plate inserted between the first spring 6 and the movable contact 5; is a metal plate made by punching a copper plate into a circular shape, and both transmit the spring force of the first spring 6 evenly to the temperature-sensitive pellet 3 and the movable contact 5, thereby reducing malfunctions in the operations described later. 9 is a second lead wire having the fixed contact 4 at its inner end; 10 is an insulating bushing made of ceramic or the like fitted to the outer periphery of the fixed contact side end of the second lead wire 9; It is inserted into the open end and fixed by caulking.

Reference numeral 11 denotes a second open circuit spring compressed and inserted between the insulating bushing 10 and the movable contact 5, and 12 an insulating tube made of ceramic or the like that is inserted into and fixed to the lead-out portion of the second lead wire 9 from the metal case 1. ,
Reference numeral 13 denotes a sealing resin such as epoxy resin for sealing the lead-out root portion of the second lead wire 9.
Publication No. 6982).

Assembly of this temperature fuse takes place in the following order: First, the first lead wire 2 is attached to one end of the metal case 1.
are caulked and fixed, and the temperature-sensitive pellet 3, push plate 7, first spring 6, push plate 8, movable contact 5, and second spring 11 are inserted into the metal case 1 in this order. On the other hand, connect the second lead wire 9 to the insulating bushing 1.
0, and insert the insulating bushing 10 into the metal case 1 until it reaches a fixed position while compressing the first and second springs 6, 11.
The insulating bushing 10 is fixed by caulking the open end of the metal case 1 inward. Thereafter, a sealing resin 13 is applied to the outer surface of the insulating bushing 10, an insulating tube 12 is inserted, and the sealing resin 13 is fixed, thereby sealing the lead-out root portion of the second lead wire 9.

By the way, the spring 6 incorporated into the metal case 1 is as shown in FIGS. 7 and 8.
The metal case 1 with an open top end is supported upright on the support plate 14, and is inserted into the metal case 1 all at once from above using a vertically movable and horizontally movable suction structure a as shown in FIGS. 9 and 10. are doing.
The support plate 14 has a plurality of lead insertion holes 14a arranged in a grid pattern.
A lead wire 2 attached to an opening at one end of the metal case 1 is inserted through the metal case 1 to support the metal case 1 upright.

The suction structure a will be explained with reference to FIGS. 9 to 11.

In FIGS. 9 to 11, reference numeral 15 denotes a flat magnet mounting board, and a plurality of support rods 16 are arranged in a grid pattern and integrally protrude from the lower surface 15a of this mounting board 15. 17 is the above spring 6
This magnet 17 is a plurality of rod-shaped magnets made of electromagnets or permanent magnets that attract
The same magnetic poles are vertically disposed at the lower end of the support rod 16 of the magnet mounting board 15 with the same magnetic poles facing in the same direction. Reference numeral 18 denotes a positioning member in which a plurality of guide pins 20 are arranged in a grid pattern and hung integrally on the lower surface of the substrate portion 19, and a plurality of through holes 21 are bored in the substrate portion 19 of the positioning member 18. A magnet 17, which is vertically disposed on the magnet mounting board 15, is inserted through the through hole 21 and positioned between the guide pins 20. Reference numeral 22 denotes a push plate member made of a non-magnetic material such as Bakelite (registered trademark) or synthetic resin and supported so as to be movable relative to the magnet mounting board 15 and the positioning member 18 in the vertical direction.
A plurality of recesses 23 into which the rod-shaped magnets 17 fit are formed in the surface 22a of the magnet 17, and small-diameter through holes 24 are formed between the recesses 23 into which the guide pins 20 of the positioning member 18 are inserted. Reference numeral 25 shown in FIGS. 9 and 11 is an alignment tray;
On the upper surface 25a of the tray 25, a plurality of recesses 26 for accommodating and holding the springs 6 are arranged in a grid pattern in correspondence with the guide pins 20 of the positioning member 18.

Next, the procedure for inserting the spring 6 into the metal case 1 will be explained as follows.

A lead wire 2 attached to an opening at one end of the metal case 1 is inserted into each insertion hole 14a of the support plate 14 to support the metal case 1 upright. 3. A push plate 7 is inserted. Further, a spring 6 is accommodated in each recess 26 of the alignment tray 25.

The suction structure a located above the alignment tray 25 has each magnet 17 attached to the recess 2 of the push plate member 22.
3 and descends with the tip 20a of the guide pin 20 of the positioning member 18 protruding downward from the push plate member 22. When the suction structure a is lowered until the lower surface 22b of the push plate member 22 of the suction structure a comes into contact with the upper surface 25a of the alignment tray 25, the tip 20a of the guide pin 20 moves into the recess 26 of the alignment tray 25. As the spring 6 enters the center part of the spring 6, the spring 6 is attracted to the lower surface 2 of the press plate member 22 by the attraction force of the plurality of magnets 17.
2b and between the magnets 17 in a hanging manner. The suction assembly a that has suctioned the spring 6 rises, then horizontally moves to a position above the support plate 14, and then descends. Then, the spring 6 adsorbed to the lower surface 22b of the push plate member 22 of the adsorption structure a is attached to the upper end opening 1 of the metal case 1 shown in FIG.
When the push plate member 22 reaches directly above the guide pin 2
0 and move downward. Then, the spring 6 is pressed downward by the push plate member 22, falls away from the attraction structure a against the attraction force of the magnet 17, and is inserted into the metal case 1 through the upper end opening 1a.

Problems to be Solved by the Invention In the conventional attraction structure a, as shown in FIGS. 9 and 10, the magnetic poles of the plurality of magnets 17 that attract the springs 6 are oriented in the same direction. Each spring 6 that is attracted to the attraction structure a by force has the same kind of magnetism. However,
Since the suction structure a has the interval l between the guide pins 20 that guide the springs 6 as short as possible so that a large number of springs 6 can be suctioned at once, the suctioned springs 6 repel each other. There was a problem in that the springs 6 were misaligned and entangled, and as a result, each spring 6 could not be smoothly separated from the suction assembly a in a constant proper posture.

Means for Solving the Problems The present invention was proposed in view of the above problems, and consists of arranging a plurality of rod-shaped magnets in a row or a grid on the bottom surface of the magnet mounting board, and The magnetic poles of the magnets are vertically arranged and alternately have different polarities.

Effect When magnetic parts are attracted by the attraction structure according to the present invention, adjacent magnetic parts do not repel each other. As a result, the magnetic components do not become misaligned or entangled, and the magnetic components can be attracted and held in a certain proper posture and transferred, allowing the magnetic components to be smoothly separated from the attraction structure. be able to.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2. Components that are the same as those shown in FIGS. 6 to 11 are denoted by the same reference numerals, and description thereof will be omitted. The feature of the attraction structure b according to the present invention is that the lower surface 15a of the magnet mounting board 15
Bar-shaped magnets 31a and 31b made of permanent magnets are attached to each of the supporting rods 16 arranged in a grid pattern and protruding from each other.
are vertically arranged, and the magnetic poles of adjacent magnets 31a and 31b are alternately made to have different polarities.

When the spring 6 is attracted by the attraction structure b, the spring 6 is attracted by a plurality of magnets 31a and 31b having different polarities. At this time, the spring 6 is connected to each magnet 3 as shown in FIG.
Each magnet 31 is placed in a position opposite to 1a and 31b.
Since the springs 6a and 31b have different types of magnetism that attract each other, they are reliably attracted to the attraction structure b, and adjacent springs 6 do not repel each other and become entangled. Therefore, the spring 6 in the suction structure b
The spring 6 can be sucked and held in a certain appropriate posture and transferred, and then the spring 6 can be smoothly separated from the suction structure b and inserted into the metal case 1. The operation of the suction structure b is the same as that of the conventional example, so a description thereof will be omitted.

3 to 5 schematically show other embodiments of the present invention. In this embodiment, one magnetic component, for example, a plate-like piece 32, is directly attracted by a single magnet 31a or 31b. When the plate-like pieces 32 are attracted to the flat end faces 33a, 33b of the magnets 31a, 31b, the plate-like pieces 32 adjacent to each other are charged with different types of magnetism that attract each other, so that the plate-like pieces 32 do not repel each other. Therefore, the plate-like piece 32 can be reliably attracted to the suction structure in a certain proper posture. 34 is an alignment tray, and a suction structure attracts the plate-like pieces 32 arranged and placed on this alignment tray 34.

Incidentally, in each of the above embodiments, the magnets 31a, 3
Although a case has been described in which a permanent magnet is used for 1b, the present invention is not limited to this, and an electromagnet or the like may be used. Also, magnet 31
a and 31b may be arranged not only in a grid pattern but also in a row pattern. Further, in the above embodiment, the case where the spring 6 or the plate-like piece 32 incorporated in the non-returnable temperature fuse is attracted and held, but the magnetic parts are not limited to the spring 6 and the plate-like piece 32. It may be any material that can be adsorbed by the adsorption structure.

Effects of the invention When magnetic parts are attracted by the attraction structure according to the invention, adjacent magnetic parts do not repel each other, so the magnetic parts do not become misaligned and become entangled. It is possible to suction and hold the object in a certain proper posture, to transport it, and to separate it smoothly. In addition, this invention
For example, in addition to magnetic parts that are attracted by a plurality of magnets, such as a spring incorporated in the non-resettable temperature fuse, it can also be used to attract magnetic parts such as a plate-like piece that is attracted by a single magnet. It can be used over a wide range of areas. Further, since it is only necessary to change the direction of the magnetic pole of the magnet of the existing attraction structure, the manufacturing cost is low.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of the suction structure according to the present invention, FIG. 2 is an enlarged sectional view of the main part thereof, and FIG. 3 is a schematic front view showing another embodiment of the suction structure. FIG. 4 is an enlarged view of the main part, and FIG. 5 is a plan view of the main part of the alignment tray. FIG. 6 is a sectional view showing a specific example of a non-resettable temperature fuse, FIG. 7 is a schematic plan view of a support plate that supports the metal case upright, and FIG. 8 is a sectional view taken along the line A-A in FIG. 7. FIG. 9 is a longitudinal sectional view of a conventional suction structure, FIG. 10 is an enlarged sectional view of a main part of a conventional suction structure, and FIG. 11 is a plan view of a main part of an alignment tray. 15... Magnet mounting plate, 15a... Bottom surface,
31a, 31b...Magnet.

Claims (1)

[Scope of utility model registration request] A magnetic component characterized in that a plurality of rod-shaped magnets are vertically arranged in a row or a grid on the bottom surface of a magnet mounting board, and the magnetic poles of adjacent magnets are alternately made to have different polarities. Adsorption structure.