JPH04112441U - relay - Google Patents

Abstract

(57) [Summary] [Purpose] To eliminate wear and tear on both sides of a movable contact base metal caused by friction with the inner sides of two left and right guide protrusions formed to protrude and oppose each other on a movable iron piece loaded in a relay. [Structure] The guide protrusions formed near the upper end of the movable iron piece are chevron-shaped and the end area of each protrusion is large.
It is possible to prevent abrasion and breakage caused by impact during relay operation that occurs at the portions in contact with both longitudinal sides of the movable contact base placed between the protrusions, and to enable stable operation over a long period of time.

Description

[Detailed explanation of the idea]

0001

[Technical field of this proposal]

This proposal relates to the structure of the relay and the specific structure of the movable iron piece loaded therein.

0002

[Conventional technology]

Figures 1 to 5 show the configuration of the present proposal, but in this case, Figure 3, which will be described later, will be used. The gist is the specific structure shown in Figure 5, and other parts are based on the main structure. This type of relay is not directly related to the gist of the relay and is of a well-known type. The general structure is described using Figures 1 and 2, with the same numbers assigned to the same parts. , FIG. 1 shows a side view, and FIG. 2 shows a plan view. In each figure, 1 is an object to be fixed (not shown). 2 is the yoke of the relay fixed to the insulating base 1. , 3 is a coil fixed to the yoke 2, and has an iron core 5 therein. 4 is the front The upper part connected to the upper part of the yoke 2 is bent inward in an L-shape, and a common terminal 6 is provided. The mounting bracket 7 is a movable iron piece, and for the conventional type, see Figure 6 onwards. will be described later. Reference numeral 8 denotes a movable contact base metal, to which a shunt wire from the common terminal 6 is connected to one end. The exposed screw 9 is provided with movable contacts 10 and 10' on the upper and lower surfaces of the other end, respectively. Reference numeral 13 denotes a pin fixed approximately at the center of the upper surface of the movable contact base metal 8; The lower cap 12 and the upper cap 11 are inserted, and 15 is inserted between each cap. 14 is the return spring, 16 is the fixed terminal of the movable contact 10', Reference numeral 17 indicates a fixed terminal of the fixed contact 18, and 19 indicates a shunt wire.

0003

[Problems with conventional technology]

To describe the operating status of the relay configured as shown above, before energizing, it is as shown in the diagram. However, when the coil 3 is energized, the movable iron piece 7 is first attracted to the iron core 5. Subsequently, the movable contact base metal 8 is lowered, the movable contact 10 contacts the fixed contact 18, and the movable contact base 8 comes into contact with the fixed contact 18. The potential of the carrying terminal 6 is transmitted to the shunt wire 19, the movable contact base metal 8, and the fixed terminal 17. , when the movable contact 10 of the movable contact base metal 8 and the fixed contact 18 of the fixed terminal 17 come into contact. The most important thing is that both contacts 10 and 18 maintain contact at the same surface position. In other words, structural consideration must be taken to avoid misalignment of both contacts 10 and 18. For this purpose, the following movable iron pieces have conventionally been used. Figures 6 to 8 show an example of the conventional type, and Figures 9 to 11 show a similar different example. In these figures, FIGS. 6 and 9 are plan views, FIGS. 7 and 10 are front views, and FIGS. Figure 11 is a right side view. In each figure, the same parts are given the same reference numerals and the specific structure is To explain the structure in detail, first, in FIGS. 6 to 8, 7 is a plate-shaped body having a substantially rectangular shape. The movable iron pieces 20 and 21 have both ends of the portion protruding from the upper end surface of the movable iron piece 7 toward the front. Guides bent perpendicularly to the surface of the iron piece 7 so as to oppose each other (in the direction of the surface in the figure) The movable contact base metal 8 is placed in the protrusion, and both sides of the base metal 8 are held. This guides the base metal 8 when it moves up and down when the relay is activated, and prevents the position shift due to left and right movement. The movable contact 10 of the base metal 8 is completely aligned with the fixed contact 18 of the fixed terminal 17. It works to maintain close contact. However, as mentioned above, the guide protrusions 20 and 21 simply extend both sides of the upper end of the movable iron piece 7. Since it is bent, it also has the effect of moving left and right when the movable contact base metal 8 moves violently up and down. In particular, when the guide protrusions come into strong contact with each other, stress is applied to return the bent part, causing it to break down. Therefore, there was a drawback that each bent portion was easily broken. Therefore, in order to eliminate such drawbacks, as shown in Figs. 9 to 11, the guide The bending directions of the protrusions 20 and 21 are bent at right angles to the longitudinal direction of the movable iron piece 7. The respective protrusions are perpendicular to both sides in the longitudinal direction of the loaded movable contact base metal 8, that is, each protrusion is There is an improved version in which the guide protrusions 20 and 21 are held by opposing end faces. However, even with such a configuration, although the breakage of the bent part can be solved, the movable As a result of the opposing sides of each guide protrusion 20 and 21 coming into contact with both sides of the contact base metal 8, an immediate In other words, each end surface with a small contact area (thickness of the movable iron piece 7) is a movable contact base to be loaded. In addition, the movable iron piece 7 is made of iron and the movable contact base metal Since the base metal 8 is made of copper alloy, the base metal 8 made of soft material wears out more than the original target. It is still insufficient to bring the contacts 10 and 18 into complete contact at the same position. There is an additional problem with this.

0004

[Purpose of the proposal] This proposal aims to eliminate the shortcomings of the title as much as possible, and its purpose is to is placed on the movable iron piece 7 that repeatedly makes severe contact with both sides of the movable contact base metal 8. The contact area of the guide protrusions 22, 23 is increased, and the contact area of each guide protrusion 22, 23 is increased. The end area of each protrusion itself is increased by increasing the end area of each protrusion to provide elasticity. Tighten the movable contact base metal 8 to prevent wear of the contact area and breakage of each of the upright parts. The aim is to make both small and durable for long-term use.

[0005]

[Key points of the case]

In this case, near the upper end of the movable iron piece 7, which is a plate-shaped body that is loaded into the relay, Two opposing guide protrusions 22 and 23 on the left and right are formed protruding from the surface toward the surface, and each Each base of the protrusion is formed so as to open toward the opposing surface in a V-shape. It is characterized by the fact that it is

[0006]

[Example of implementation of the proposal]

Figures 3 to 5 show examples of the movable iron piece applied to the relay of the present invention, and Figure 3 is a plan view; 4 is a front view, and FIG. 5 is a right side view. In each figure, 7 is a movable plate-shaped body. The iron pieces 22 and 23 are placed near the upper surface of the movable iron piece 7, from the back side of the iron piece 7 to the front side. As shown in Fig. The respective bases of the risers 22 and 23 are shaped like a V-shape when facing the opposing surface, as shown in FIG. It is formed to have a wide opening. 24 connects the shunt wire 19 to one of the movable contact base metals 8. This is a concave portion that comes into contact with the head of the screw 9 fixed at the end and forms a fulcrum for the base metal 8, as shown in the figure. 4. As shown in FIG. 5, the back of the movable iron piece 7 is It is formed protruding from the surface. 25 and 26 are grooves that engage with the bracket 4. Ru.

[0007]

[Effect of the proposal]

According to the present proposal, the relay has the specific configuration shown in FIGS. 3 to 5 and described above. Since the movable iron piece 7 is loaded, that is, as shown in FIG. The guide protrusions 22 and 23 formed near the ends are shaped like a protruding mountain. , the area in contact with both sides of the movable contact base metal 8 in the longitudinal direction can be large, and it is possible to The bases of the guide protrusions 22 and 23 that protrude from the moving iron piece 7 are opened in a V-shape and are mutually connected. It has sufficient mechanical strength to withstand impact upon contact. and, together with the increase in the contact area, elastically absorbs and alleviates the impact itself. movable material made of soft material as seen in conventional types. A chisel that can prevent the occurrence of wear and tear caused by contact on both sides of the contact base metal 8 as much as possible. The guide protrusions 22 and 23 themselves can withstand severe impacts due to their elasticity. It also avoids breakage caused by scratches, and thus has excellent effectiveness and can stably withstand long-term use. play the fruit. In addition, in the above explanation, two fixed terminals are connected from the common terminal 6 as the relay of the present invention. Although we have described a three-pole type with a configuration that switches between 16 and 17, it is limited to this. Of course, there is no support for a two-pole relay that omits the fixed terminal 16. Can be applied without any problems.

[Brief explanation of drawings]

[Fig. 1] Plan view showing an embodiment of the proposed relay

[Figure 2] Plan view of Figure 1

[Figure 3] Plan view of the movable iron piece used in the proposed relay

[Figure 4] Front view of Figure 3

[Figure 5] Right side view of Figure 3

[Fig. 6] A plan view showing an example of a conventional type of movable iron piece.

[Figure 7] Front view of Figure 6

[Figure 8] Right side view of Figure 6

[Fig. 9] Plan view showing different examples of conventional movable iron pieces.

[Figure 10] Front view of Figure 9

[Figure 11] Right side view of Figure 9

[Explanation of symbols]

1 Insulation stand 2 York 3 coil 4 Brackets 5 Iron core 6 Common terminal 7 Movable iron piece 8 Movable contact base metal 9 screws 10 Movable contact 10' Movable contact 11 Upper cap 12 Lower cap 13 pin 14 Return spring 15 Contact spring 16 Fixed terminal 17 Fixed terminal 18 Fixed contact 19 shant line 20 Guide projection 21 Guide projection 22 Guide projection 23 Guide projection 24 Recess 25 Kerf 26 Kerf

Claims (1)

[Scope of utility model registration request] [Claim 1] A yoke 2 and a coil 3 fixed thereto.
a bracket 4 fixed to the yoke; a movable iron piece 7 having one end engaged with the bracket and the other end attracted to the iron core 5 of the coil; and a movable iron piece 7 placed on the movable iron piece and driven. In the type of relay consisting of a contact base metal 8, the movable iron piece 7 is made of a plate-shaped body, and near its upper end, two guide protrusions 22, 23 on the left and right opposing each other are formed from the back surface toward the front surface. A relay characterized in that each base of each protrusion is formed in a protruding shape and is formed so as to have a V-shape and open toward the opposing surface on the surface.