JP2905217B2 - Component connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a plurality of parts to be coupled, such as a solenoid armature and a connection frame, which are simultaneously caulked and fixed by pin-shaped projections provided on a coupling part such as a plunger. The present invention relates to a connection structure of parts to be connected.

[Conventional technology]

Conventionally, in the movable iron core block of the polarized solenoid,
As shown in FIGS. 4 and 5, the pin-shaped projection 44 at the tip of the plunger 41 allows the armature 42 and the connection frame 43 to be connected to each other.
The parts are caulked and fixed at the same time. The connection frame 43 is formed in a U-shape and engages notches provided in both flanges 43a with a swingable reversing lever (not shown).

As shown in FIG. 6, a pin insertion hole 45 of the amateur 42 is provided.
And the pin insertion hole 46 of the connection frame 43 has the same inner diameter b ′,
The pin-shaped projection 44 is inserted to the extent that the pin-shaped projection 44 can be inserted.
Is slightly larger than the outer diameter a '.

[Problems to be solved by the invention]

However, since the base end portion of the pin-shaped protrusion 44 is not sufficiently widened by caulking, as described above, if the arm 42 and the pin insertion holes 45 and 46 of the connection frame 43 have the same inner diameter b ', the A gap d is generated between the inner surface of the pin insertion hole 45 and the outer surface of the pin-shaped protrusion 44.

When the gap d is generated as described above, there is a problem that the backlash is generated due to the repetition of the forward / backward movement of the plunger 41.

Further, there is a problem that the gap d between the plunger 41 and the armature 42 increases the magnetic resistance between them.

The problem of insufficient caulking generally occurs when two parts to be connected, such as metal, are simultaneously fixed by the pin-like projections of one connecting part, in addition to the case of the solenoid.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a component coupling structure in which a plurality of components can be simultaneously caulked and fixed with a single coupling component having a pin-shaped projection without rattling.

An object of the invention of claim (2) is to provide a coupling structure of parts that can further reduce the magnetic resistance between the plunger and the amateur.

[Means for solving the problem]

In the invention of claim (1), the pin-shaped projections provided on the coupling component are inserted into pin insertion holes of a plurality of coupled components to be overlapped with each other, and the plurality of coupled components are connected by the pin-shaped projections. In the connection structure of the parts fixed by caulking, the outer diameter a of the pin-shaped protrusion, the inner diameter b of the pin insertion hole of the connected part on the base end side of the pin-shaped protrusion, and the insertion of the pin of the connected part on the distal end side. The relationship with the inner diameter c of the hole is such that a <b <c.

According to a second aspect of the present invention, in the first aspect of the present invention, the coupling component is a solenoid plunger, and the coupled components at the base end and the distal end are an armature and a connection frame, respectively.

[Action]

According to the configuration of the present invention, the inner diameter b of the pin insertion hole of the component to be coupled on the base end side of the pin-shaped projection is made smaller than the inner diameter c of the pin insertion hole of the component to be coupled on the distal end side. Even if the outer diameter of the proximal end of the part is small,
By caulking, the outer surfaces of the pin-shaped projections press against the inner surfaces of the pin insertion holes of both parts to be connected.

In the case of the invention of claim (2), the air gap between the plunger which is the coupling component and the armature which is the component to be coupled on the proximal end side is reduced, so that the magnetic resistance between them is also reduced.

〔Example〕

One embodiment of the present invention will be described with reference to FIGS.

The coupling part 1 is a plunger of a polarized solenoid,
A pin-shaped protrusion 4 is provided at the tip. On the distal end face of the coupling part 1, a coupling part 2 composed of an amateur and a coupling part 3 composed of a connection frame are provided in an overlapping manner. Pin insertion holes 5 and 6 provided in these coupling parts 2 and 3 are provided with pins. The projection 4 is inserted. A movable core block is constituted by the connecting part 1 and the parts 2 and 3 to be connected.

The outer diameter a of the pin-shaped projection 4, the inner diameter b of the pin insertion hole 5 of the component 2 on the proximal end side of the pin-shaped projection, and the inner diameter c of the pin insertion hole 6 of the coupled component 3 on the distal end side. The relationship is a <b <c, and the pin-shaped protrusion 4 is swaged from the tip.

As shown in FIG. 2 (B), the coupled part 2 made of an amateur is a flat plate, and as shown in FIG. 2 (C), the coupled part 3 made of a connecting frame is formed in a U-shape. And a pair of flanges 3a.

FIG. 3 shows an electromagnetic contactor to which this component coupling structure is applied. This electromagnetic contactor comprises a contact block 11 and an electromagnet block 12, each of which contains a component in its body.

The electromagnet block 12 includes a coil frame 13 around which a coil 14 is wound.
The coupling part 1 as the plunger is inserted in the inside so as to be freely movable in the axial direction, and a notch 3b (see FIG. 3 (B)) formed in a flange 3a of the coupling part 3 as a connection frame (see FIG. 3B). Is pin-connected. The reversing lever 15 is rotatably supported by the body of the electromagnet block 12 by a support pin (not shown) projecting from the center in the longitudinal direction. Also, as shown in FIG. 3 (B), the electromagnet block 12
A yoke 21 and a permanent magnet 20 for attracting the part 2 to be joined, which is an amateur, are provided, and a magnetic cylinder 22 is provided.

The contact block 11 has a movable table 16 housed in the body so as to be able to advance and retreat in the lateral direction (the direction of arrow p). The movable base 16 is provided with a movable contact 17 of each electric path, and the fixed contact 18
Is fixed to the body. One end of the movable base 16 is urged in a contact separating direction by a return spring 19, and the other end is engaged with the upper end of the reversing lever 15.

The operation of the electromagnetic contactor will be described. As shown in FIG. 3B, when the coil 14 is in the non-excited state, the permanent magnet 20 attracts the armature-coupled component 2 via the yoke 21. When the coil 14 is excited, the coupling member 1 as a plunger moves to the right in the drawing against the magnetic force of the permanent magnet 20. Therefore, the reversing lever 15 (FIG. 3A) rotates,
The movable base 16 moves to the left side of the figure, and the movable contact 17 becomes a fixed contact 18.
Contact

According to the coupling structure of the components having this configuration, as shown in FIG. 1, the inner diameter b of the pin insertion hole 5 of the component 2 to be coupled on the base end side.
Is smaller than the inner diameter c of the pin insertion hole 6 of the component 3 on the distal end side, so that even if the outer diameter of the base end side portion of the pin-shaped projection 4 due to caulking is small, the pin-shaped projection is swaged. 4 is the pin insertion hole 5, 6 of both parts 2, 3
Press against the inner surface of That is, the outer surface portion of the pin-shaped protrusion 4
The diameter is increased until 4a and 4b contact the inner surfaces of the pin insertion holes 5 and 6, respectively. Therefore, the two coupled components can be prevented from rattling even when the coupling component 1 is repeatedly moved forward and backward.
2,3 can be fixed securely.

The coupling component 1 is a plunger, and the coupling component 2 on the proximal end side is an amateur. However, since these are pressed together as described above, the gap between them is reduced, and the magnetic resistance is reduced. Therefore, the attraction and repulsion operations by the coil 14 and the like become efficient.

Although the above embodiment has been described with respect to an example in which the present invention is applied to a solenoid, the connecting structure of parts according to the present invention is generally applied to a connecting structure in which two connected parts are simultaneously caulked and fixed by a pin-shaped projection provided on the connecting part. It is possible.

The present invention can also be applied to a case where three or more components to be coupled are overlapped and coupled.

〔The invention's effect〕

According to the component coupling structure of the invention of claim (1), the inner diameter b of the pin insertion hole of the component to be coupled on the base end side of the pin-shaped protrusion is larger than the inner diameter c of the pin insertion hole of the component to be coupled on the distal end side. Because of the small size, the outer surface of the pin-shaped projection is pressed against the inner surface of the pin insertion hole of each of the parts to be coupled by the swaging even if the outer diameter of the proximal end portion of the pin-shaped projection is small due to the caulking. Therefore, due to the repetitive operation and the like occurring in the coupling parts,
The two parts to be coupled can be securely fixed without generating rattling.

According to the component coupling structure of claim (2), the plunger as the coupling component and the armature as the component to be coupled are pressed into contact with each other as described above.
This has the effect of reducing the magnetic resistance.

[Brief description of the drawings]

FIG. 1 is a cutaway side view showing a connecting structure of parts according to an embodiment of the present invention, and FIGS. 2 (A) to 2 (C) are side, front, and front views of the respective parts, and FIG. (A) is a cutaway front view of an electromagnetic contactor to which the coupling structure is applied, FIG. 3 (B) is a horizontal sectional view of an electromagnetic block portion of the electromagnetic contactor, FIG. 4 is a perspective view of a conventional example, and FIG. FIG. 5 is a cutaway side view, and FIG. 6 is a partially enlarged sectional view of FIG. 1 ... connecting parts, 2, 3 ... parts to be connected, 4 ... pin-shaped projections, 5, 6 ... pin insertion holes

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16B 4/00 H01H 50/64 H01F 7/16

Claims (2)

(57) [Claims] 1. A plurality of parts to be coupled each having a pin insertion hole are overlapped with each other, and a pin-shaped projection provided on the coupling part is inserted into the pin insertion hole of each of the plurality of parts to be coupled. In a component coupling structure in which the plurality of coupled components are caulked and fixed to the pin-shaped projection projecting surface of the coupling component by a projection, an outer diameter a of the pin-shaped projection and a base end side of the pin-shaped projection. A relationship between the inner diameter b of the pin insertion hole of the coupled component and the inner diameter c of the pin insertion hole of the coupled component on the distal end side is a <b <c. 2. The component coupling structure according to claim 1, wherein the coupling component is a solenoid plunger, and the coupled components on the proximal and distal ends are an armature and a connection frame, respectively.