JP2000348588A - Terminal structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce number of components and commonly use a base for normally closed/opened contact mechanism part by setting the slit width dimensions for press- fitting parts of a movable contact terminal and fixed contact terminal equal to each other and folding one of the press fitting parts by setting its thickness equal to the slit width dimension. SOLUTION: Press-fitting grooves 16, 17, in which respective terminals 24, 28 of respective movable and stationary contact pieces 21, 25 are press fitted, are formed into equal widths in the front/rear face base parts of a position regulating wall 15 of a base 10. The upper end of the movable contact piece 21 is locked in a card, and the lower end has a press-fitting part 23 and the terminal 24 integrally formed of a thick board type conductor calked and fixed thereto. A press-fitting part 27 in the lower end of the stationary contact piece 25 is folded, so as to become the equal dimension to the width of the press-fitting groove and improve the rigidity, and press fitted in each press-fitting groove along with the press-fitting part 23 of the movable contact piece 21. The widths of the press-fitting grooves are thus set equal dimension so that the movable contact piece and the stationary contact piece are alternately exchanged and press-fitted and the normally opened contact mechanism part can be changed into a normally closed contact mechanism, thereby enabling common use of the base 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal structure, and more particularly to a structure of a fixed contact terminal and a movable contact terminal constituting a contact mechanism on a base of an electromagnetic relay.

[0002]

2. Description of the Related Art Conventionally, as a structure of a fixed contact terminal used for an electromagnetic relay, for example, there is one disclosed in Japanese Patent Application Laid-Open No. 9-320432. That is, the press-fitting portions of the fixed contact terminal and the movable contact terminal are press-fitted from the sides into a plurality of slits juxtaposed at the edge of the base, thereby forming a contact mechanism. The movable contact terminal is driven by a movable block that reciprocates based on excitation and demagnetization of the electromagnet block,
Open and close contacts.

However, in general, the driving force of the electromagnet block tends to decrease as the size and power consumption of the electromagnetic relay decrease. For this reason, the fixed contact terminal is made thinner (0.2 to 0.3 mm) in order to ensure contact follow-up beyond a specified level in order to match with the reduced driving force.
are doing. As a result, there is a problem that the strength of the press-fit portion and the terminal portion of the fixed contact terminal is insufficient. Further, the thickness of the elastically deformable contact piece of the movable contact terminal is also small (about 0.1 mm). In particular, when the normally open contact mechanism and the normally closed contact mechanism are to be formed on a base having slits of the same width, it is necessary to make the thicknesses of the press-fitting portions of the movable contact terminal and the fixed contact terminal uniform.

In the case described above, the elastically deformable contact piece of the movable contact terminal, the press-fitting portion and the terminal portion are formed of different conductive plate members having different thicknesses. However, in order to form the contact terminal using a separate member, not only the number of components increases, but also it is necessary to perform connection work such as caulking. Then, according to the caulking work, there is a problem that it is difficult to obtain a high component accuracy, and the operating characteristics are likely to vary.

In view of the above problems, an object of the present invention is to provide a terminal structure having a small number of parts, having desired strength and operating characteristics, and being able to share a base.

[0006]

In order to achieve the above object, a terminal structure according to the present invention has a pair of slits juxtaposed at an edge of a base, and press-fit portions of a movable contact terminal and a fixed contact terminal are laterally inserted. In the terminal structure in which the contact portions are formed by press-fitting, and the terminal portions are respectively protruded from the bottom surface of the base, the width dimensions of the slits are made the same while the press-fitting of the movable contact terminal and the fixed contact terminal is performed. At least one of the press-fitting portions is overlapped at least once and has a thickness equal to a width of the slit.

[0007] Further, a retaining projection integral with the press-fitting portion may be extended. Further, at least one of the terminal portions of the movable contact terminal and the fixed contact terminal may be formed by at least one turn.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A case where the present invention is applied to a four-pole electromagnetic relay will be described. As shown in FIG. 1, the electromagnetic relay according to the present embodiment generally includes four sets of a contact mechanism unit 20 a including a base 10, a movable contact piece (movable contact terminal) 21 and a fixed contact piece (fixed contact terminal) 25. , 20b,
20c and 20d, adjustment spring 30, card 40
, A movable block 50, and an electromagnet block 60.

The base 10 includes a first insulating wall 11 having a substantially planar Π shape and first and second insulating walls 12 and 13 having a substantially T-shaped planar shape.
And a resin molded product obtained by integrally molding the above. First insulating wall 11
And the second insulating wall 12 are continuous. Further, the second insulating wall 12 and the third insulating wall 13 face each other via an insulating space 14.

The first insulating wall 11 has a pair of shaft holes 11a, 11a rotatably supporting the movable block 50, and a pair of positioning holes for positioning and fixing the electromagnet block 60 at opposing side wall edges. Holes 11b, 11b are formed. Further, near the base of the first insulating wall 11, an adjusting hole 10a for inserting a contact adjusting gauge 70 described later is provided.

An insulating space 14 formed between the second and third insulating walls 12 and 13 is for reinforced insulation. Further, this insulating space 14 is provided with an adjusting spring 3 described later.
This is for placing 0. The second and third insulating walls 12 and 13 are connected by a reinforcing guide connecting portion 14a. Furthermore, the second and third insulating walls 12 and 13
The position control walls 15 are provided upright on both sides.
Press-fitting grooves (slits) 16 and 17 for press-fitting the movable contact piece 21 and the fixed contact piece 25 from the side are formed on the front and rear bases of the position regulating wall 15, respectively. A substantially C-shaped seal reservoir groove 1 for preventing intrusion of a sealing agent (not shown) is provided in an intermediate portion between the press-fit grooves 16 and 17.
6a and 17a are formed (FIGS. 11A and 11C).
13 (a), (c) and FIG. 15). For this reason, even if the sealant is injected into the press-fitting grooves 16 and 17 into which the press-fitting portions 23 of the movable contact pieces 21 are press-fitted, the sealant solidifies in the seal reservoir grooves 16a and 17a, and the sealant cannot penetrate deep inside. There are advantages.

Movable contact piece 21 constituting contact mechanism section 20
As shown in FIG. 11, a movable contact 22 is fixed to the upper end by caulking. In addition, the movable contact piece 21 can lock the upper end edge 21 a thereof to the card 40.
On the other hand, the movable contact piece 21 has an integral press-fit portion 2 at its lower end.
3 and the terminal portion 24 are fixed by caulking. The press-fit portion 23 and the terminal portion 24 are formed by punching a thick plate-shaped conductive material. In addition, 23a is a retaining protrusion.

The fixed contact pieces 25 constituting the contact mechanism portions 20a, 20b, 20c and 20d are shown in FIGS.
As shown in FIG. 4, a fixed contact 26 (FIG. 13C) is fixed by caulking to a caulking hole 25a (FIG. 13B) provided at the upper end. Further, the fixed contact piece 25 has a press-fit portion 27 and a terminal portion 28 integrally formed at the lower end thereof.

The fixed contact piece 25 is connected to the fixed contact 26
The edges located on both sides of the ribs are bent and raised to form reinforcing ribs 25.
b, 25b are formed. And one of the ribs 2
5b is provided with a position regulating stopper 25c protruding therefrom. The stopper 25c is bent and raised at the same time as the rib 25b is bent and raised. Therefore, 1
There is an advantage that the reinforcing ribs 25b and the stoppers 25c can be formed simultaneously by a single bending process. A slit 25d is formed vertically below the stopper 25c.

The position restricting stopper 25c is shown in FIG.
As shown in FIG. 3 (c), when the movable contact 22 and the fixed contact 26 are welded, the contact welding is eliminated by contacting the position regulating wall 15 of the base 10. Further, the rigidity of the fixed contact piece 25 is partially increased by providing the reinforcing ribs 25b. For this reason,
Bending is less likely to occur in the region from the fixed contact 26 to the stopper 25c. As a result, there is an advantage that a predetermined cutoff interval can be secured between the movable contact 22 and the fixed contact 26, safety is enhanced, and contact welding can be more effectively prevented. In order to increase the rigidity of the fixed contact piece 25, for example, a ridge may be formed by protrusion.

On the other hand, as shown in FIG. 14 (b), the press-fitting portion 27 partially folds the folded portion 27a to increase rigidity in order to increase the supporting strength. Similarly, terminal part 2
8 also increases the rigidity by folding the folded portion 28a to increase the support strength (FIG. 14C). Note that 27
b is a retaining projection.

Next, the press-fit groove 1 formed in the base 10
The press-fitting portions 23 of the movable contact pieces 21 and the press-fitting portions 27 of the fixed contact pieces 25 are press-fitted from sides, respectively. As a result, the movable contact 22 and the fixed contact 26 oppose each other so as to be able to contact and separate from each other, and the contact mechanism units 20a, 20b, 20c and 2
0d is formed. Further, the stopper 25c of the fixed contact piece 25 faces the position regulating wall 15 so as to be able to abut.

The method for preventing the intrusion of the sealant is not limited to the above-mentioned method, and as shown in FIGS.
Notch 23 in movable contact piece 21 and fixed contact piece 25
b and 27c may be formed respectively. And
The cut-out portions 23b and 27c and the seal reservoir grooves 16a and 17a provided in the base 10 may prevent the penetration of the sealant. According to this modification, there is an advantage that the shape of the molding die is simplified and the molding of the base 10 is facilitated.

As shown in FIG. 1, the adjusting spring 30 is formed by integrally forming an adjusting portion 32 at the lower end of a plate spring portion 31, which is divided into two parts. Further, a press-fit portion 33 is formed integrally with a lower end of the adjusting portion 32. The adjusting portion 32 and the press-fitting portion 33 are formed by punching a single plate, folding the plate, and reinforcing it. However, in order to facilitate the adjustment, a notch is formed between the adjusting part 32 and the press-fitting part 33 to reduce the width dimension. Further, an adjusting arm 35 is formed on one side of the adjusting section 32.

In the present embodiment, the adjusting unit 32 is
It has twice the thickness of 1. For this reason, even if the adjustment part 32 is bent and adjusted, the influence does not reach the leaf spring part 31. Further, since the press-fit portion 33 is also substantially thick, there is an advantage that it is easy to press-fit the base 10.

The press-fitting portion 33 of the adjusting spring 30 is press-fitted from the side into a press-fitting groove 14b (FIG. 12A) formed on the bottom surface of the insulating space 14 (FIG. 12B).
An adjustment spring 30 is provided upright in the insulating space 14.

As shown in FIG. 1, the card 40 has a frame shape which is slidably fitted to the upper ends of the first, second, and third insulating walls 11, 12, and 13 of the base 10. I have. Further, a pair of locking claws 41, 41 for locking to the movable block 50 are extended laterally at one end side edge. Further, the card 40 is provided with locking holes 42a, 42b, 42c, 42 for locking the upper end edge 21a of the movable contact piece 21.
d is formed. The card 40 has a pair of adjustment projections 43 projecting from the lower surface thereof (FIG. 2). The adjustment protrusion 43 is engaged with the upper ends of the leaf spring portions 31 of the adjustment spring 30 (FIG. 8).

A pair of projections for holding the upper edge 21a of the movable contact piece 21 are provided on the inner surfaces of the locking holes 42a to 42d facing each other (FIG. 9).
(A)). The protrusions do not face each other, and abut on one half of the movable contact piece 21. Therefore, the width of the gap between the locking holes 42a to 42d can be increased. As a result, the molding die, especially its core pin, can be made thicker,
There is an advantage that the life of the molding die is extended.

Then, the card 40 is fitted into the first, second, and third insulating walls 11, 12, and 13, and the upper edge 21a of the movable contact piece 21 is locked in the locking holes 42a to 42d, respectively. As a result, the card 40 is slidably supported. Then, the adjustment protrusion 43 of the card 40 is pressed against the upper end of the adjustment spring 30 (FIG. 8).

The number of protrusions of the card 40 for holding the upper end 21a of the movable contact piece 21 is not limited to two, but may be three or more. In addition, the protrusion may be provided not only on the inner surface facing the locking hole but also on the inner surface facing the slit. Further, the card 40 may be locked not only at the upper end edge 21a of the movable contact piece 21 but also at an intermediate portion thereof. The protrusion may make a point contact as well as a line contact with the movable contact piece 21. Meanwhile, the card 40
It is not always necessary to provide the protruding portion on the surface. For example, a plurality of protrusions may be respectively protruded from different positions of the movable contact 21 in the opposite directions, and may be brought into contact with the locking holes or the inner surfaces of the slits provided in the card 40. This modification also has the advantage that the width of the locking hole or slit of the card can be increased, and the molding of the card is facilitated.

The movable block 50 is, as shown in FIG.
The permanent magnet 52 that is in contact with one surface of the movable iron piece 51 is integrally formed of a resin material. In addition, the movable block 50
Has a locking projection 53 projecting from its upper edge. Further, the movable block 50 has a pair of shaft portions 54 protruding from the both end surfaces thereof on the same axis (FIG. 1).

The shaft portion 54 of the movable block 50
Into the shaft hole 11a of the base 10,
The movable block 50 is rotatably supported. Further, by locking the locking claws 41 of the card 40 with the locking projection 53, the two are connected. For this reason, the rotating operation of the movable block 50 can be converted into the reciprocating operation of the card 40.

The electromagnet block 60 is formed by inserting an iron core 63 into a center hole of a spool 62 around which a coil 61 is wound, and caulking and fixing yokes 64 and 65 bent in substantially L shapes to both protruding ends. The spool 62 includes:
Both ends have flanges 62a and 62b, respectively. And
A pair of coil terminals 66, 66 are press-fitted into the flange 62b. Both ends of the coil 61 are soldered to the coil terminals 66, 66, respectively. On the other hand, on the yoke 64, a pair of positioning projections 64a project sideways.

Therefore, by inserting the electromagnet block 60 into the first insulating wall 11 of the base 10 from the side, the positioning projection 64a of the yoke 64 is pressed into the positioning hole 11b of the base 10 and positioned. As a result, the upper and lower ends of the movable iron piece 51 face the free ends of the yokes 64 and 65 alternately so as to be able to come and go.

Next, a method of assembling and adjusting the electromagnetic relay according to the present embodiment will be described. First, the movable contact piece 21 and the fixed contact piece 25 are inserted into the press-fit grooves 16 and 17 of the base 10.
Press-fit from the sides, and the normally open contact mechanism portions 20a, 2
0b, 20d and the normally closed contact mechanism 20c.
Further, the adjusting spring 30 is press-fitted into the press-fitting groove 14b of the base 10 from the side, and stands up in the insulating space 14 (FIG. 2).

Then, the shaft portion 54 of the movable block 50 is press-fitted into the shaft hole 11a of the base 10 from the side and rotatably supported (FIG. 3). Next, the card 40 is slidably fitted to the upper ends of the first, second, and third insulating walls 11, 12, and 13 of the base 10. At the same time, the locking holes 42a,
By inserting the upper edge 21a of each movable contact piece 21 into 42b, 42c, 42d, respectively, each movable contact piece 2
1 is rotatably supported. Further, the movable block 50
The locking projection 53 is locked to the locking claws 41 of the card 40 and connected (FIG. 4).

Further, the contact adjusting gauge 70 is inserted from below into the adjusting hole 10a provided on the bottom surface of the base 10 (FIG. 5), and the upper end thereof is projected from the bottom surface of the base 10 (FIG. 6). At this time, the lower end of the movable iron piece 51 contacts the upper end of the gauge 70, as shown in FIG.

Finally, the electromagnet block 60 is inserted into the first insulating wall 11 of the base 10 from the side, and the first insulating wall 11
The positioning protrusion 64 of the yoke 64 is inserted into the positioning hole 11b.
Press in while sliding a. At this time, the coil 6
A voltage is applied to 1 and press-fitted in the excited state. Then, the yoke 65 is press-fitted until the free end thereof contacts the lower end of the movable iron piece 51 via the upper end of the gauge 70.
Further, the press-fitting operation is continued while monitoring the conduction state of the contact pair, and the press-fitting operation is stopped when the normally open contact pair is opened. Thereby, a predetermined contact follow can be secured in the normally open contact pair, and the assembly of the electromagnet block 60 is completed.

Then, a case (not shown) is fitted to the base 10, and an adhesive sealant is injected and cured between the base 10 and the case and the base of the terminal portion. At this time, the adjusting hole 10a can be used as an escape hole for internal air. Further, after the sealant has hardened, the adjustment hole 10a is sealed with heat caulking or an adhesive. When the operating characteristics deviate from the allowable range, as shown in FIG. 2, the spring force on the card 40 can be adjusted via the adjusting arm 35 of the adjusting spring 30 exposed from the side.

In the electromagnetic relay according to the present embodiment, the body of the movable contact piece 21 is straight without bending. Therefore, higher component accuracy and assembly accuracy than in the conventional example can be obtained. As a result, after the assembly is completed, the adjustment operation for plastically deforming the main body of each movable contact piece 21 in the plate thickness direction to adjust the contact follow of each movable contact is drastically reduced. In particular, a multi-pole electromagnetic relay having a large number of movable contacts has the advantage that productivity is significantly improved by reducing the adjustment work.

In the electromagnetic relay according to the present embodiment, the press-fit portions 23 and 27 of the movable contact terminal 21 and the fixed contact terminal 25 have the same width as the press-fit grooves 16 and 17. For this reason, as shown in FIG. 17, the normally open contact mechanism can be changed to a normally closed contact mechanism by replacing the movable contact terminal 21 and the fixed contact terminal 27 with each other and press-fitting them. As a result, there is an advantage that the base 10 can be shared.

Next, the operation of the electromagnetic relay that has been assembled will be described. Coil 6 of electromagnet block 60
When no voltage is applied to 1, the upper end of the movable iron piece 51 is attracted to the yoke 64 of the electromagnet block 60 based on the magnetic force of the permanent magnet 52. For this reason, the movable contact 22 and the fixed contact 26 of the normally open contact mechanism 20a, 20b, 20d are separated from each other, while the normally closed contact mechanism 20
The movable contact 22 and the fixed contact 26 of FIG.

Then, a voltage is applied to the coil 61 to excite it so that a magnetic flux canceling the magnetic flux of the permanent magnet 52 is generated. Accordingly, the movable block 50 rotates against the magnetic force of the permanent magnet 52, and the lower end of the movable iron piece 51 is attracted to the yoke 65. Therefore, the card 40 slides in the horizontal direction against the spring force of the adjustment spring 30. As a result,
Movable contact piece 2 of normally open contact mechanism 20a, 20b, 20d
1 rotates, and the movable contact 22 contacts the fixed contact 26.
At the same time, the movable contact 22 and the fixed contact 26 of the normally closed contact mechanism 20c are opened (FIG. 8). At this time, the protruding portions of the card 40 come into contact with the movable contact pieces 21, respectively, and the movable contact pieces 21 are twisted. For this reason, since the movable contact 22 contacts the fixed contact 26 while wiping, there is an advantage that contact welding is hard to occur.

When the above-mentioned excitation is released, the movable iron piece 51 rotates backward and returns based on the spring force of the movable contact piece 21, the adjusting spring 30, and the magnetic force of the permanent magnet 52. For this reason, the card 40 returns to the original state, and the normally open contact mechanism 20
The movable contact pieces 21a, 20b, and 20d return, and the movable contact 22 is separated from the fixed contact 26. At the same time, the movable contact 22 and the fixed contact 26 of the normally closed contact mechanism 20c come into contact with each other and return to the original state.

[0040]

According to the first aspect, the thickness dimension of the press-fit portion of the movable contact terminal and the fixed contact terminal becomes the same as the width dimension of the slit provided in the base. Therefore, by appropriately selecting the movable contact terminal and the fixed contact terminal, the normally open contact mechanism and the normally closed contact mechanism can be configured, and the base can be shared. Further, since the press-fitted portion is formed by folding, not only the desired strength can be ensured, but also the number of components does not increase unlike the conventional example. Furthermore, since the press-fit portion is formed by folding, the accuracy of the components does not decrease as in the caulking operation, and the operating characteristics hardly vary.

According to the second aspect, the retaining projection having a predetermined strength can be formed integrally and simultaneously with the press-fitting portion.
Easy to manufacture.

According to the third aspect, since the terminal portion is also formed by folding, there is an effect that a desired strength can be secured without increasing the number of parts.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an electromagnetic relay according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a state where a contact mechanism is incorporated in a base.

FIG. 3 is a perspective view showing a state where a movable block is assembled to a base.

FIG. 4 is a perspective view showing a state where a card is attached to a base.

FIG. 5 is a perspective view before inserting a contact adjustment gauge into a base.

FIG. 6 is a perspective view after a contact adjusting gauge is inserted into a base.

FIG. 7 is a perspective view showing a state where an electromagnet block is assembled to a base.

8 is a vertical sectional view of the electromagnetic relay shown in FIG.

9 shows a plan view of the electromagnetic relay shown in FIG. 1, wherein FIG. 9 (a) is a plan view with a card attached, and FIG. 9 (b) is a plan view with the card removed.

10 shows a perspective view of the electromagnetic relay shown in FIG. 1,
FIG. 7A is a perspective view of the base unit before the internal components are attached, and FIG. 7B is a perspective view after the internal components are attached.

11 shows an enlarged perspective view of FIG. 10, wherein FIG. 11 (a) is a partially enlarged perspective view of a base unit alone, FIG. 11 (b) is an enlarged perspective view of a movable contact terminal, and FIG. It is a partial expansion perspective view after.

12 shows a perspective view of the electromagnetic relay shown in FIG. 1,
FIG. 7A is a perspective view of the base unit before the internal components are attached, and FIG. 7B is a perspective view after the internal components are attached.

13 shows an enlarged perspective view of FIG. 12, wherein FIG. 13 (a) is a partially enlarged perspective view of a base alone, FIG. 13 (b) is an enlarged perspective view of a fixed contact terminal, and FIG. It is a partial expansion perspective view after.

14A and 14B show the fixed contact terminal of FIG. 13, wherein FIG. 14A is an overall perspective view from a different angle, FIG. 14B is an enlarged perspective view of a press-fit portion, and FIG. 14C is an enlarged perspective view of a terminal portion. It is.

FIG. 15 is a cross-sectional view of FIG.

FIG. 16 is a perspective view of the electromagnetic relay shown in FIG. 1 when viewed from the opposite side.

17 is an enlarged perspective view of a case where a pair of fixed contact terminals and movable contact terminals in FIG. 16 are replaced.

FIGS. 18A and 18B show a modification of FIG. 11, wherein FIG. 18A is a partially enlarged perspective view of a base alone, FIG. 18B is an enlarged perspective view of a movable contact terminal, and FIG. 3 is a partially enlarged perspective view of FIG.

19 shows a modification of FIG. 10, wherein FIG. 19 (a) is a partially enlarged perspective view of a single base, FIG. 19 (b) is an enlarged perspective view of a fixed contact terminal, and FIG. 19 (c) is a state after internal components are attached. 3 is a partially enlarged perspective view of FIG.

20 is a transverse sectional view showing a case where the fixed contact terminal of FIG. 19 is attached to a base.

[Description of Signs] 10 base, 10a adjustment holes, 11, 12, 13 first, second, third insulating walls, 14 insulating spaces, 14a guide connecting portion, 15 position control walls, 16, 17 ... press-fit groove (slit). 20a, 20b, 20c, 20d: contact mechanism portion, 21: movable contact piece (movable contact terminal), 22: movable contact, 21a: upper edge, 23: press-fit portion, 23a: retaining projection, 23b: cutout portion , 24 ... terminal part, 25 ... fixed contact piece (fixed contact terminal), 25 b ... reinforcing rib, 25
c: stopper, 26: fixed contact, 27: press-fit part, 27
a: folded portion, 27b: retaining projection, 27c: cutout portion, 28: terminal portion, 28a: folded portion. Reference numeral 30 denotes an adjustment spring, 31 denotes a leaf spring portion, 32 denotes an adjustment portion, 33 denotes a press-fit portion, and 35 denotes an adjustment arm portion. 40 ... card, 41 ... locking claw,
42a, 42b, 42c, 42d: locking holes, 43: adjusting projections. 50: movable block, 51: movable iron piece, 52: permanent magnet, 53: locking projection, 54: shaft. 60 ... electromagnet block, 61 ... coil, 62 ... spool, 63 ... iron core,
64, 65: yoke, 64a: positioning projection, 66:
Coil terminal. 70 ... Contact adjustment gauge.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenji Komi 11,000 Ohara Nakano, Osamucho, Takeo-shi, Saga Prefecture Omron Takeo Corporation

Claims (3)

[Claims] 1. A contact mechanism is formed by press-fitting a press-fit portion of a movable contact terminal and a fixed contact terminal from a side into a pair of slits juxtaposed at an edge of a base, and forming the contact portion with the base. In the terminal structure protruding from the bottom surface, the slit has the same width dimension, and at least one of the press-fitting portions of the movable contact terminal and the fixed contact terminal is overlapped at least once. A terminal structure, wherein the thickness is the same as the width of the slit. 2. The terminal structure according to claim 1, wherein an integral retaining projection extends from said press-fit portion. 3. The terminal according to claim 1, wherein at least one of the terminal portions of the movable contact terminal and the fixed contact terminal is formed by at least one turn. Terminal structure.