CN212365865U - Contact devices, electromagnetic relays, and devices with electromagnetic relays - Google Patents

Abstract

The utility model provides a contact device, an electromagnetic relay and a device with the electromagnetic relay. The contact device includes: a fixed contact part having a fixed contact; a movable contact part having a movable contact facing the fixed contact in the first direction, and the movable contact is oscillated by the movable contact part. moves between closed and open positions; and a position limiting portion for limiting movement of a transmission member whose one end portion in a second direction intersecting with the first direction is attached to the movable contact portion via a mounting portion , the other end is forced to make the movable contact part swing, the position limiting part is provided separately from the mounting part, and is used to limit the transmission member relative to the movable contact part in the second direction or the first direction and any Movement in a third direction intersecting the second direction. With this configuration, it is possible to suppress the positional variation of the transmission member, thereby preventing the contact device from varying in characteristics or causing malfunctions.

Description

Contact device, electromagnetic relay, and device provided with electromagnetic relay

Technical Field

The present invention relates to a contact device, an electromagnetic relay, and a device provided with an electromagnetic relay, and more particularly, to a contact device having a movable contact and a fixed contact, an electromagnetic relay provided with the contact device, and a device provided with the electromagnetic relay.

Background

In some conventional contact devices, a transmission member transmits a driving force from a driving device to move a movable contact between a closed position in which the movable contact is in contact with a fixed contact and an open position in which the movable contact is separated from the fixed contact.

In such a contact device, characteristics of the contact device may vary due to, for example, a positional deviation of the transmission member during mounting or a positional deviation of the transmission member during transmission of the driving force.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a contact device, an electromagnetic relay, and a device provided with an electromagnetic relay, which can suppress positional variation when a transmission member is mounted and operated.

An aspect of the present invention provides a contact device, which is characterized in that: a fixed contact portion having a fixed contact; a movable contact point portion having a movable contact point that is opposed to the fixed contact point in a1 st direction, the movable contact point moving between a closed position in contact with the fixed contact point and an open position separated from the fixed contact point by the swing of the movable contact point portion; and a position restricting portion that restricts movement of a transmission member, wherein the transmission member is disposed on the other side of the movable contact portion in the 1 st direction opposite to a side on which the fixed contact portion is disposed, one end portion of the transmission member in a 2 nd direction intersecting the 1 st direction is attached to the movable contact portion via an attachment portion, the transmission member is disposed so that the other end portion opposite to the one end portion is urged to swing the movable contact portion, and the position restricting portion is provided separately from the attachment portion, for restricting movement of the transmission member relative to the movable contact portion in the 2 nd direction or a 3 rd direction intersecting the 1 st direction and the 2 nd direction.

In the above-described contact device, the position defining portion may be provided at a position corresponding to the transmission member on at least one of both sides in the 3 rd direction, the position defining portion extending from the movable contact portion to the other side of the movable contact portion to a position beyond an end portion of the transmission member in the 1 st direction.

In the above contact device, the position restricting portions may be provided at positions facing each other on both sides of the movable contact portion.

In the above contact device, the transmission member may be attached to the movable contact portion at one position by the attachment portion.

In the above contact device, the position regulation portion may be formed integrally with the movable contact portion.

In the above contact device, the position regulation portion may be a caulking portion for caulking and fixing the transmission member and the movable contact portion in the vicinity of the mounting portion.

In the above-described contact device, the fixed contact portion may have a1 st fixed contact and a 2 nd fixed contact, the movable contact portion may include a1 st movable member formed of a leaf spring and having a1 st movable contact opposed to the 1 st fixed contact in a1 st direction, and a 2 nd movable member having a 2 nd movable contact opposed to the 2 nd fixed contact in the 1 st direction, the 1 st movable contact may move between a1 st closed position in contact with the 1 st fixed contact and a1 st open position separated from the 1 st fixed contact by swinging of the movable contact portion, the 2 nd movable contact may move between a 2 nd closed position in contact with the 2 nd fixed contact and a 2 nd open position separated from the 2 nd fixed contact, and the 2 nd movable member may be disposed between the 1 st movable member and the fixed contact portion in the 1 st direction, the other end portion in the 2 nd direction of the 2 nd movable member is fixed to the other end portion in the 2 nd direction of the 1 st movable member via a movable member fixing portion, one end portion in the 2 nd direction of the 2 nd movable member extends in the same direction as one end portion in the 2 nd direction of the 1 st movable member, a1 st distance from the movable member fixing portion to the 1 st movable contact is longer than a 2 nd distance from the movable member fixing portion to the 2 nd movable contact, the transmission member is plate-shaped, is attached to one end portion in the 2 nd direction of the 1 st movable member, and the position restricting portion is formed integrally with the 1 st movable member.

In the above-described contact device, the transmission member may include a wide portion having a relatively wide width in the 3 rd direction and a narrow portion having a relatively narrow width in the 3 rd direction, the transmission member and the 1 st movable member may be fixed by caulking at one position of the wide portion, the narrow portion may have a through hole penetrating the transmission member and the 1 st movable member, and the position regulation portion may be provided at a position corresponding to the through hole of the narrow portion.

In the above-described contact device, the 2 nd movable member may be formed of a plate spring, and the other end portion of the 2 nd movable member in the 2 nd direction may have a step portion protruding in the 1 st direction in a direction away from the 1 st movable member.

In the above-described contact device, the 1 st movable member and the 2 nd movable member may each include one or more leaf springs, and the position restricting portion may be formed integrally with any one of the leaf springs of the 1 st movable member.

In the above-described contact device, the transmission member may include a wide portion having a relatively wide width in the 3 rd direction and a narrow portion having a relatively narrow width in the 3 rd direction, and the position defining portion may be provided at a position corresponding to the narrow portion.

In the above contact device, a through hole may be formed to penetrate the transmission member and the movable contact portion, and the position regulation portion may be provided at a position corresponding to the through hole in the 3 rd direction.

In the above contact device, the position regulation portion may be a member that covers and clamps the transmission member and the movable contact portion from a side where the transmission member and the movable contact portion are attached in the 2 nd direction.

Another aspect of the present invention provides an electromagnetic relay, comprising: the above-described contact device; and an electromagnet device having a coil, an armature, and the transmission member, wherein the armature swings depending on whether or not the coil is energized to apply a force to the other end of the transmission member.

Another aspect of the present invention is to provide a device including an electromagnetic relay, wherein the electromagnetic relay is the above-described electromagnetic relay.

According to the above-described configurations, it is possible to suppress positional variation of the transmission member, suppress variation in characteristics of the contact device, and prevent occurrence of malfunction due to contact between the transmission member and the molding member of the contact device.

Drawings

Fig. 1 is an exploded perspective view of a contact device and an electromagnetic relay according to embodiment 1 of the present invention.

Fig. 2 is a front view of the electromagnetic relay with the cover removed.

Fig. 3 is an exploded perspective view of the movable contact portion of the contact device.

Fig. 4 is an exploded perspective view of the fixed contact portion of the contact device.

Fig. 5 is a front view showing a part of the electromagnetic relay and showing an open state of the contact device.

Fig. 6 is a front view showing a part of the electromagnetic relay and showing a closed state of the contact device.

Fig. 7 is a partially enlarged plan view showing a positional relationship between the position regulation portion and the transmission spring according to embodiment 1 of the present invention.

Fig. 8 is a partially enlarged plan view showing a positional relationship between the position regulation portion and the transmission spring according to embodiment 2 of the present invention.

Description of the reference numerals

13A, 1 st fixed contact (1 st contact part); 13B, the 2 nd fixed contact (the 2 nd contact part); 14A, a1 st movable contact (a 1 st contact portion); 14B, a 2 nd movable contact (a 2 nd contact part); 20. a fixed contact part; 15. a movable contact part; 16. 1 st movable member; 17. a 2 nd movable member; 8: a transmission spring (transmission member); 9: a position defining section; 100. an electromagnetic relay; a1, contact device; b1 and an electromagnet device.

Detailed Description

Hereinafter, embodiments of the present invention will be described. The following embodiments are merely one of various embodiments of the present invention. In addition, as long as the object of the present invention can be achieved, various modifications can be made to the following embodiments depending on design and the like.

[ embodiment 1 ]

(1) Detailed structure of contact device and electromagnetic relay

Hereinafter, the detailed configurations of the contact device a1 and the electromagnetic relay 100 according to the present embodiment will be described with reference to fig. 1 to 7.

Hereinafter, the direction in which the 1 st fixed contact 13A and the 1 st movable contact 14A are arranged is referred to as the vertical direction, the side where the 1 st movable contact 14A is located when viewed from the 1 st fixed contact 13A is referred to as the upper side, and the opposite side is referred to as the lower side, thereby performing the description. In fig. 1, the following description will be made by setting the direction in which the 1 st movable contact 14A and the 2 nd movable contact 14B are arranged to the left-right direction, the side on which the 2 nd movable contact 14B is located when viewed from the 1 st movable contact 14A to the left direction, and the opposite side to the left direction. That is, in the present embodiment, the direction in which the 1 st fixed contact 13A and the 1 st movable contact 14A are arranged, in other words, the direction in which the 1 st fixed contact 13A and the 1 st movable contact 14A face each other is the 1 st direction (up-down direction). In addition, the direction in which the 1 st movable contact 14A and the 2 nd movable contact 14B are arranged, in other words, the direction intersecting the 1 st direction is the 2 nd direction (left-right direction). The direction intersecting both the 1 st direction and the 2 nd direction is the 3 rd direction (front-rear direction).

The arrows indicating the above-described directions (up, down, left, and right) shown in fig. 1 to 7 are only for the sake of description assistance, and do not accompany the entities. The above-described direction is not intended to limit the usage form of the electromagnetic relay 100.

The electromagnetic relay 100 of the present embodiment is a so-called hinge-type relay. As shown in fig. 1, the electromagnetic relay 100 of the present embodiment includes a contact device a1, an electromagnet device B1, and a case C1.

As shown in fig. 1 and 2, the contact device a1 includes a1 st terminal board 11, a 2 nd terminal board 12, a1 st fixed contact 13A, a pair of 2 nd fixed contacts 13B, a1 st movable contact 14A, a pair of 2 nd movable contacts 14B, a movable contact section 15, and a position defining section 9.

First terminal plate 11 is made of a conductive material (e.g., copper) and formed in an L-shape when viewed from the front. As shown in fig. 3, the 1 st terminal plate 11 has a1 st horizontal plate 111 and a1 st vertical plate 112. The 1 st horizontal plate 111 and the 1 st vertical plate 112 are both formed in a rectangular shape. A pair of fixing holes 114 penetrating in the thickness direction (vertical direction) are provided in the middle portion of the 1 st horizontal plate 111 in the longitudinal direction (horizontal direction). The pair of fixing holes 114 are used to fix the movable contact portion 15 to the 1 st terminal plate 11 (here, the 1 st horizontal plate 111).

The 1 st vertical plate 112 protrudes downward from one end (left end) in the longitudinal direction (left-right direction) of the 1 st horizontal plate 111. The 1 st vertical plate 112 has a1 st terminal portion 113. The 1 st terminal portion 113 is formed in a rectangular plate shape, and protrudes rightward from one end portion (lower end portion) in the longitudinal direction (vertical direction) of the 1 st vertical plate 112. The 1 st terminal portion 113 is provided with a circular 1 st terminal hole 115 into which a screw or the like is inserted.

The 2 nd terminal plate 12 is formed of a conductive material (e.g., copper) so that its shape is L-shaped when viewed from the front. As shown in fig. 4, the 2 nd terminal plate 12 has a 2 nd horizontal plate 121 and a 2 nd vertical plate 122. The 2 nd horizontal plate 121 and the 2 nd vertical plate 122 are both formed in a rectangular shape. The 2 nd horizontal plate 121 is bent in a stepped shape at its distal end (left end), and 3 mounting holes 124 penetrating in the thickness direction (vertical direction) are provided in the middle portion in the longitudinal direction (horizontal direction) of the 2 nd horizontal plate 121. Two mounting holes 124 of the 3 mounting holes 124 are provided on the left side of the step, and the remaining 1 mounting hole 124 is provided on the right side of the step, so that the mounting hole 124 on the right side is located above the two mounting holes 124 on the left side in the up-down direction (1 st direction).

The shaft portion 131 of the 1 st fixed contact 13A is inserted into the 1 mounting hole 124 located on the right. Then, the shaft 131 is riveted to the 2 nd terminal plate 12 (here, the 2 nd horizontal plate 121) to attach the 1 st fixed contact 13A to the 2 nd terminal plate 12. Further, the shaft portions 131 of the pair of 2 nd fixed contacts 13B are inserted into the two mounting holes 124 located on the left side, respectively. Then, the shaft portions 131 are riveted to the 2 nd terminal plate 12 (here, the 2 nd horizontal plate 121) to attach the pair of 2 nd fixed contacts 13B to the 2 nd terminal plate 12. The 1 st fixed contact 13A and the pair of 2 nd fixed contacts 13B may be integrally formed with the 2 nd terminal plate 12.

The 2 nd vertical plate 122 protrudes downward from one end (right end) in the longitudinal direction of the 2 nd horizontal plate 121. The 2 nd vertical plate 122 has a 2 nd terminal portion (terminal portion) 123. The 2 nd terminal portion 123 is formed in a rectangular plate shape, and protrudes leftward from one end portion (lower end portion) in the longitudinal direction (vertical direction) of the 2 nd vertical plate 122. The 2 nd terminal portion 123 is provided with a circular 2 nd terminal hole 125 into which a screw or the like is inserted. Here, in the present embodiment, the fixed contact portion 20 is configured by the 2 nd terminal plate 12 to which the 1 st fixed contact 13A and the pair of 2 nd fixed contacts 13B are attached.

The 1 st terminal portion 113 is electrically connected to, for example, one of a power supply and a load (here, a motor) by, for example, screw fixing. In addition, the 2 nd terminal portion 123 is electrically connected to, for example, the other of the power supply and the load by, for example, screw fixing.

As shown in fig. 3, the movable contact portion 15 has 1 st movable member 16 and a plurality of (3 in the illustrated example) 2 nd movable members 17. The 1 st movable member 16 is formed of a conductive material (e.g., copper) in a plate shape elongated in the left-right direction. Each of the plurality of 2 nd movable members 17 is formed of a conductive material (e.g., copper) in a plate shape elongated in the left-right direction, and is disposed between the 1 st movable member 16 and the fixed contact portion 20 in the up-down direction (1 st direction). The 1 st movable member 16 and the plurality of 2 nd movable members 17 are each formed of, for example, a leaf spring. The 1 st movable member 16 is longer than the 2 nd movable member 17 in the left-right direction.

A pair of fixing holes 161 penetrating in the thickness direction (vertical direction) are provided at one end (left end) in the longitudinal direction (horizontal direction) of the 1 st movable member 16. The pair of fixing holes 161 are used to fix the 1 st movable member 16 to the 1 st terminal plate 11 (here, the 1 st horizontal plate 111). A mounting hole 162 penetrating in the thickness direction is provided at the other end portion (right end portion) in the longitudinal direction of the 1 st movable member 16. The shaft portion 141 of the 1 st movable contact 14A is inserted into the mounting hole 162. The shaft portion 141 is riveted to the 1 st movable member 16, whereby the 1 st movable contact 14A is attached to the 1 st movable member 16. The 1 st movable contact 14A may be integrally formed with the 1 st movable member 16.

As shown in fig. 3, each of the plurality of 2 nd movable members 17 has a mounting portion 171 and a stepped portion 172. The mounting portion 171 is formed in a plate shape that is long in the left-right direction. A pair of fixing holes 174 penetrating in the thickness direction (vertical direction) are provided at one end (left end) in the longitudinal direction (left-right direction) of the mounting portion 171. The pair of fixing holes 174 is used to fix the 2 nd movable member 17 to the 1 st terminal plate 11 (here, the 1 st horizontal plate 111) together with the 1 st movable member 16. The step portion 172 protrudes in the thickness direction (vertical direction) in a direction away from the 1 st movable member 16 (downward) from the other end (right end) of the mounting portion 171 in the longitudinal direction. In other words, the other end portion (right end portion) of the 2 nd movable member 17 in the 2 nd direction (left-right direction) has a step portion 172 protruding in the 1 st direction (up-down direction) in a direction away from the 1 st movable member 16.

The step portion 172 is divided into a plurality of (two in the illustrated example) 2 nd movable contact dividing pieces 173 in the front-rear direction (3 rd direction) intersecting both the vertical direction (1 st direction) and the horizontal direction (2 nd direction). The plurality of 2 nd movable contact dividing pieces 173 are provided with mounting holes 175 penetrating in the thickness direction (vertical direction). A shaft portion 141 of one of the pair of 2 nd movable contacts 14B is inserted into each mounting hole 175. The shaft portion 141 is caulked to the 2 nd movable contact segment 173, whereby the 2 nd movable contact 14B is mounted on the 2 nd movable contact segment 173. The pair of 2 nd movable contacts 14B may be integrally formed with the 2 nd movable member 17. Here, the 1 st distance L1 (see fig. 5) from the one end portion in the 2 nd direction of the 2 nd movable member 17 to the 1 st movable contact 14A is longer than the 2 nd distance L2 (see fig. 5) from the one end portion in the 2 nd direction of the 2 nd movable member 17 to the 2 nd movable contact 14B.

In the present embodiment, the movable contact portion 15 is configured by a plurality of (3 in the illustrated example) 2 nd movable members 17 and 1 st movable member 16 which are overlapped in the up-down direction. The pair of fixing holes 161 of the 1 st movable member 16 and the pair of fixing holes 174 of the 2 nd movable members 17 are overlapped with the pair of fixing holes 114 of the 1 st terminal plate 11, and the pins 23 (see fig. 2) are inserted into the fixing holes 161, 174, and 114 and caulked. Thereby, 1 st movable member 16 and 2 nd movable member 17 are fixed to 1 st terminal plate 11 (see fig. 2).

The movable contact portion 15 (the 1 st movable member 16 and the 2 nd movable member 17) is driven by the electromagnet device B1, and the 1 st movable contact 14A and the pair of the 2 nd movable contacts 14B are moved between the open position and the closed position with a fixed portion (pin 23) fixed to the 1 st terminal plate 11 as a fulcrum. Specifically, the 1 st movable contact 14A moves between a1 st closed position (see fig. 6) in contact with the 1 st fixed contact 13A and a1 st open position (see fig. 5) spaced apart from the 1 st fixed contact 13A. The 2 nd movable contact 14B moves between a 2 nd closed position (see fig. 6) in contact with the 2 nd fixed contact 13B and a 2 nd open position (see fig. 5) spaced apart from the 2 nd fixed contact 13B.

The position restricting portion 9 is formed in a substantially rectangular plate shape, extends upward from the 1 st movable member 16 to a position beyond an end portion in the front-rear direction (3 rd direction) of the transmission spring 8 in the up-down direction at positions corresponding to the transmission spring 8 described later, from both sides in the front-rear direction (3 rd direction, direction perpendicular to the paper surface in fig. 2) of the 1 st movable member 16 intersecting both the up-down direction (1 st direction) and the left-right direction (2 nd direction), and sandwiches the transmission spring 8 from both sides like embracing the transmission spring 8 (see fig. 7). The position defining portion 9 may be formed integrally with the 1 st movable member 16. For example, the first movable member 16 is formed by bending upward a substantially rectangular plate-like protruding portion that protrudes forward and backward and is formed on both sides in the forward and backward direction. In addition, chamfers may be formed at both corner portions of the position defining portion 9 beyond the end portions of the transmission spring 8 in the front-rear direction.

As shown in fig. 1 and 2, the electromagnet device B1 includes a coil 2, a bobbin 3, a stator 4, a yoke 5, an armature 6, a return spring 7, and a transmission spring 8. The stator 4, the yoke 5, and the armature 6 are each formed of a magnetic material. The coil 2 is formed by winding an electric wire (for example, a copper wire) around an outer peripheral surface of the bobbin 3. The coil 2 has a pair of coil terminals 21 electrically connected to the 1 st end and the 2 nd end of the wire, respectively. The coil 2 is energized by supplying a current through the pair of coil terminals 21, and generates a magnetic flux. The bobbin 3 is formed in a rectangular tube shape long in the left-right direction from an electrically insulating material such as a synthetic resin material. The bobbin 3 is disposed such that the axial direction thereof coincides with the left-right direction.

The stator 4 is an iron core formed in an elliptic cylindrical shape long in the left-right direction. The stator 4 is inserted into the hollow portion 31 of the bobbin 3 in a state where both ends in the longitudinal direction (left-right direction) thereof are exposed from the bobbin 3. The diameter dimension of the 1 st end (right end) in the longitudinal direction of the stator 4 is larger than the diameter dimension of the middle portion, and the 1 st end (right end) in the longitudinal direction of the stator 4 faces the armature 6. Hereinafter, the 1 st end of the stator 4 is referred to as "suction portion 41". The 2 nd end (left end) of the stator 4 in the longitudinal direction is inserted into an insertion hole 511 (described later) of a1 st plate 51 (described later) of the yoke 5, and the stator 4 is fixed to the yoke 5.

The yoke 5 forms a magnetic path through which magnetic flux generated when the coil 2 is energized passes together with the stator 4 and the armature 6. The yoke 5 is formed in an L-shape when viewed from the front by bending an intermediate portion of a rectangular plate that is long in the left-right direction. As shown in fig. 1, the yoke 5 has a1 st plate 51 and a 2 nd plate 52. The 1 st plate 51 and the 2 nd plate 52 are each formed in a rectangular plate shape. The 1 st plate 51 is disposed on one end side (left side) in the axial direction (left-right direction) of the coil 2. The 1 st plate 51 is provided with an insertion hole 511 penetrating in the thickness direction (left-right direction). The 2 nd end of the stator 4 is inserted into the insertion hole 511. The 2 nd plate 52 is disposed below the coil 2.

The armature 6 is formed in an L-shape when viewed from the front by bending an intermediate portion of a rectangular plate that is long in the left-right direction. As shown in fig. 1, the armature 6 has a1 st plate 61 and a 2 nd plate 62. The 1 st plate 61 and the 2 nd plate 62 are each formed in a rectangular plate shape. In addition, the dimension in the width direction of the 1 st plate 61 is smaller than the dimension in the width direction of the 2 nd plate 62. Here, the width direction refers to a direction (front-rear direction) substantially orthogonal to both the vertical direction and the horizontal direction.

As shown in fig. 1, the 1 st plate 61 of the armature 6 is provided with a projection 611. The projection 611 projects from a surface (lower surface) of the 1 st plate 61 facing the 1 st movable member 16. In addition, the protrusion 611 is formed integrally with the 1 st plate 61.

The armature 6 is configured to be rotatable about an intermediate portion thereof between a1 st position where the 2 nd plate 62 contacts the attraction portion 41 of the stator 4 and a 2 nd position where the 2 nd plate 62 is spaced apart from the attraction portion 41 of the stator 4. When the armature 6 is located at the 1 st position, the 1 st plate 61 (here, the projection 611) of the armature 6 presses the 1 st movable member 16 downward by the transmission spring 8. Further, when the armature 6 is located at the 2 nd position, the 1 st plate 61 (here, the projection 611) of the armature 6 is pressed upward from the 1 st movable member 16 by the transmission spring 8.

The return spring 7 is formed of a metal plate spring so that the shape thereof is L-shaped when viewed from the front. The return spring 7 is formed by integrally forming the 2 nd piece 72 and the pair of 1 st pieces 71. The pair of 1 st pieces 71 are fixed to the 2 nd plate 52 of the yoke 5. The 2 nd piece 72 is fixed to the 2 nd plate 62 of the armature 6. The return spring 7 is configured to deflect when the armature 6 is in the 1 st position. The return spring 7 returns to its original state, and applies a force to the armature 6 in a direction to move the armature 6 from the 1 st position to the 2 nd position. That is, the return spring 7 is configured to apply a force in a direction to move the armature 6 from the 1 st position to the 2 nd position to the armature 6 by its elastic force.

The transmission spring 8 is provided between the armature 6 and the 1 st movable member 16 in the vertical direction, and functions as a transmission member that transmits force between the armature 6 and the 1 st movable member 16. That is, in the present embodiment, force is transmitted from the armature 6 to the 1 st movable member 16 via the transmission spring 8, and force is transmitted from the 1 st movable member 16 to the armature 6 via the transmission spring 8.

As shown in fig. 1, the transmission spring 8 is formed of a plate spring made of metal such as stainless steel (SUS). The transmission spring 8 is formed by integrally forming the 1 st plate 81, the 2 nd plate 82, and the 3 rd plate 83. The 1 st plate 81, the 2 nd plate 82, and the 3 rd plate 83 are formed in rectangular shapes. Here, as long as the function of the transmission member for transmitting the force between the armature 6 and the 1 st movable member 16 can be exhibited, the transmission spring 8 is not limited to a member having elasticity, and may be a member having no elasticity.

The 1 st plate 81 is provided with a hole 811 penetrating in the thickness direction (vertical direction). In the present embodiment, the shaft portion 141 of the 1 st movable contact 14A inserted through the mounting hole 162 of the 1 st movable member 16 is inserted into the hole 811, and the shaft portion 141 is riveted to the 1 st plate 81 (the rivet portion where the shaft portion 41 is inserted into the mounting hole 162 and riveted to the 1 st plate 81 corresponds to the mounting portion), so that the 1 st plate 81 is mounted on the 1 st movable member 16. The 1 st plate 81 may be attached to the 1 st movable member 16 without the 1 st movable contact 14A. That is, the transmission spring 8 may be attached to a portion of the 1 st movable member 16 different from the portion to which the 1 st movable contact 14A is attached.

The 2 nd plate 82 is formed integrally with the 1 st plate 81 by a 3 rd plate 83 inclined obliquely upward from one end (left end) in the left-right direction of the 1 st plate 81. The 2 nd plate 82 is located above the 1 st plate 81 in the thickness direction (vertical direction). In a state where the transmission spring 8 is attached to the 1 st movable member 16, the 2 nd plate 82 faces the 1 st plate 61 of the armature 6 and contacts the projection 611 of the 1 st plate 61.

The case C1 is formed in a box shape from an electrically insulating material such as synthetic resin. The case C1 is configured by bonding the base C11 and the lid C12 together by, for example, an adhesive using a thermosetting resin. The housing C1 is for housing the contact arrangement a1 and the electromagnet arrangement B1.

(2) Contact device and operation of electromagnetic relay

Next, the operation of the contact device a1 and the electromagnetic relay 100 according to the present embodiment will be described with reference to fig. 2, 5, and 6.

First, the closing operation of the contact device a1 will be described. When the coil 2 is energized in the open state of the contact device a1, the coil 2 generates magnetic flux. Then, a magnetic attraction force is generated between the 2 nd plate 62 of the armature 6 and the attraction portion 41 of the stator 4, the armature 6 presses down the 2 nd plate 82 of the transmission spring 8, and the transmission spring 8 transmits a force from the armature 6 to the 1 st movable member 16. The 1 st movable member 16 rotates in the clockwise direction, the 1 st movable contact 14A comes into contact with the 1 st fixed contact 13A first, the 1 st terminal plate 11 and the 2 nd terminal plate 12 are electrically connected via the 1 st fixed contact 13A and the 1 st movable contact 14A, and a current flows along the current path R2.

When the armature 6 further presses the 2 nd plate 82 of the transmission spring 8 downward, the 1 st movable member 16 further rotates in the clockwise direction by the force from the transmission spring 8. As a result, the pair of 2 nd movable contacts 14B and the pair of 2 nd fixed contacts 13B are brought into contact with each other, and a current flows along the current path R1. That is, the 1 st movable member 16 and the 2 nd movable member 17 are configured to bring the 1 st movable contact 14A into contact with the 1 st fixed contact 13A and then bring the pair of the 2 nd movable contacts 14B into contact with the pair of the 2 nd fixed contacts 13B during the closing operation.

The opening action of contact arrangement a1 is the reverse of the closing action. When the energization of the coil 2 is released in the on state of the contact device a1, the coil 2 does not generate any magnetic flux any more. Then, the magnetic attraction force between the 2 nd plate 6 of the armature 6 and the attraction portion 41 of the stator 4 also disappears. Then, the force with which the armature 6 presses the 1 st movable member 16 downward by the transmission spring 8 is weakened. Therefore, the 1 st movable member 16 is released from the downward deflection state by its own elastic force, and rotates counterclockwise about the fixed portion (pin 23) as a fulcrum. In this case, contrary to the closing operation, after the pair of 2 nd movable contacts 14B are separated from the pair of 2 nd fixed contacts 13B, the 1 st movable contact 14A is separated from the 1 st fixed contact 13A. That is, the 1 st movable member 16 and the 2 nd movable member 17 are configured to separate the 1 st movable contact 14A from the 1 st fixed contact 13A after separating the pair of 2 nd movable contacts 14B from the pair of 2 nd fixed contacts 13B at the time of the opening operation.

When the armature 6 is reset to the 2 nd position and the movement of the armature 6 is completed, the armature 6 is fixed at the 2 nd position. Therefore, the 2 nd plate 82 of the transmission spring 8 is sandwiched between the 1 st plate 61 of the armature 6 and the 1 st movable member 16, and the elastic force to return the 2 nd plate 82 of the transmission spring 8 to the original state acts on the 1 st movable member 16, thereby decelerating the 1 st movable member 16. Therefore, the vibration of the 1 st movable member 16 is suppressed by the transmission spring 8 and converged, and the movement of the 1 st movable member 16 is completed.

When the transmission spring 8 is mounted to the 1 st movable member 16 only by inserting the shaft portion 141 of the 1 st movable contact 14A inserted through the mounting hole 162 of the 1 st movable member 16 into the hole 811 and caulking the shaft portion 141 to the 1 st plate 81, the transmission spring 8 is insufficient in stability, and is likely to be displaced during mounting and to be displaced in the front-rear left-right direction during operation. Such positional deviation during mounting and positional deviation during operation may cause scraping against the projection 611 of the armature 6 or interference with other surrounding molded components. In the case of the above-described cases, the characteristics of the contact device a1 may vary, the characteristics may fluctuate during operation, or operation failure may occur.

In the present embodiment, by providing the position regulating portions 9 that sandwich the transmission spring 8 from the front-rear direction on both sides of the transmission spring 8, it is possible to regulate the positional movement of the transmission spring 8 during mounting, reduce the positional deviation of the transmission spring 8, enhance the stability during mounting, and stabilize the characteristics of the contact device a 1. When the contact device a1 is opened and closed, the position restricting section 9 can receive a force for rotating the transmission spring 8 in a rotational direction (mainly, in the front-rear direction), and can suppress the positional variation of the transmission spring 8 and the characteristic variation of the contact device a 1. Further, it is possible to avoid the transmission spring 8 from interfering with the surrounding molding member to cause malfunction.

[ embodiment 2 ]

Embodiment 2 of the present invention will be described with reference to fig. 8. In embodiment 2, the transmission spring 8 and the first movable member 16 are different from those in embodiment 1, and the other configurations are the same. Hereinafter, differences between embodiment 2 and embodiment 1 will be mainly described, and descriptions of the same parts will be omitted.

As shown in fig. 8, the transmission spring 8 differs from the transmission spring 8 of embodiment 1 in that the 1 st plate 81 includes: a wide width portion 8111 having a relatively wide width in the front-rear direction (third direction); a narrow width portion 8112 having a relatively narrow width in the front-rear direction; and two through holes 8113 provided at the narrow portion of the transmission spring 8 at positions substantially symmetrical in the front-rear direction and penetrating the transmission spring 8 in the thickness direction (the vertical direction, the first direction).

The first movable member 16 is also provided with a through hole penetrating the first movable member 16 in the thickness direction (vertical direction) at a position corresponding to the through hole 8113 of the narrow portion 8112 of the transmission spring 8, and further provided with a concave portion recessed inward at a position corresponding to the through hole 8113 of the narrow portion 8112 of the transmission spring 8 on both sides in the front-rear direction.

A hole 811 for inserting the shaft portion 141 of the first movable contact 14A is formed in the wide portion 8112 of the first plate 81, and a position defining portion 9 is provided at the above-described concave portion of the first movable member 16.

In the case where the transmission spring 8 has a structure including a wide portion and a narrow portion and a through hole provided in the narrow portion, by providing a position restricting portion at a position corresponding to the through hole provided in the narrow portion, it is possible to enhance the strength of the narrow portion, particularly, a portion where the through hole 8113 is provided, in addition to the effect of embodiment 1.

[ DEFORMATION ] OF THE PREFERRED EMBODIMENT

In the above embodiment, the example in which 1 of the 1 st movable members 16 are provided has been described, but the present invention is not limited thereto, and the number of the 1 st movable members 16 may be plural. In the case where the 1 st movable member 16 is a plurality of pieces, the position restricting portion 9 may be formed integrally with any one of the pieces of the 1 st movable member 16.

In the above embodiment, the example of providing 3 second movable members 17 was described, but the present invention is not limited to this, and the number of the second movable members 17 may be 1 or more, or the second movable members 17 may not be provided.

In the above embodiment, the 2 nd movable member 17 is described as a leaf spring as an example, but the present invention is not particularly limited to this, and the 2 nd movable member 17 may be a plate material having strength in the thickness direction instead of the leaf spring. In the above embodiment, the example in which the 2 nd movable member 17 includes the step portion 172 and is divided in the front-rear direction has been described, but the present invention is not particularly limited to this, and the 2 nd movable member 17 may not include the step portion 172 and/or may not be divided in the front-rear direction.

In the above embodiment, the transmission spring 8 is used as the transmission member, but the present invention is not limited thereto, and the transmission member may be a plate-like plate material having strength in the thickness direction.

In the above embodiment, the example of providing the plurality of movable contacts 14A and 14B and the fixed contacts 13A and 13B has been described, but the present invention is not limited to this, and at least one movable contact and one fixed contact may be provided.

In the above embodiment, the example of the transmission spring 8 being attached to the 1 st movable member by caulking is described as 16, but the present invention is not limited thereto, and the transmission spring 8 may be attached to the 1 st movable member 16 by another method such as welding or ultrasonic bonding.

In the above embodiment, the transmission spring 8 and the 1 st movable member 16 are attached at one position by the attachment portion, but the present invention is not limited thereto, and the attachment may be performed at a plurality of positions.

In the above embodiment, the position regulation portions 9 are provided at one position facing each other from both sides in the third direction, but the present invention is not limited to this, and the position regulation portions 9 may be provided only at one side, the position regulation portions 9 may be provided at positions shifted from both sides in the third direction, or the position regulation portions 9 may be provided at a plurality of positions on at least one of both sides in the third direction.

In embodiment 2 described above, the through hole 8113 is provided in the narrow width portion 8112 of the transmission spring 8, and the position restricting portion 9 is provided at a position corresponding to the position of the through hole 8113, but the present invention is not limited thereto, and the through hole 8113 may not be provided in the narrow width portion 8112, and/or the position restricting portion 9 may be provided at a position corresponding to a position of the narrow width portion 8112 other than the through hole 8113.

In the above embodiment, the description has been given taking the example in which the position restricting portion 9 is formed integrally with the 1 st movable member 16, but the present invention is not limited thereto, and the position restricting portion 9 may be formed separately as a separate member and joined to the 1 st movable member 16.

In the above embodiment, the transmission spring 8 is included in the driving device B1 as an example, but this is divided for the sake of illustration only, and the transmission spring 8 may be handled as a constituent element of the contact device a 1.

In the above embodiment, the description has been given taking as an example the case where the position regulation portion 9 is formed in a substantially rectangular plate shape extending upward to a position beyond the end of the transmission spring 8, but the present invention is not limited to this. For example, a caulking portion for caulking the transmission spring 8 and the 1 st movable member 16 may be provided as a position defining portion at a position near a caulking portion (mounting portion) for caulking the transmission spring 8, the 1 st movable member 16, and the movable contact 14A. Alternatively, a structure in which an inverted U-shaped member is provided on the right side in the left-right direction (second direction) (the side on which the transmission spring 8 is attached to the 1 st movable member 16), the transmission spring 8 and the 1 st movable member 16 are covered from the three directions of the lower side, the right side, and the upper side, and the transmission spring 8 and the 1 st movable member 16 are pinched from the up-down direction (first direction) is used as the position restricting portion 9.

The contact device a1 and the electromagnetic relay 100 described in the above embodiments and modifications can be applied to various devices that need to relay electric power by an electromagnetic relay.

Claims (15)

1. A contact device, characterized in that it has: a fixed contact portion, which has fixed contacts; A movable contact part has a movable contact, the movable contact is opposed to the fixed contact in the first direction, and the movable contact is swung with the movable contact part. moving between a closed position contacted by the fixed contact and an open position separated from the fixed contact; and a position limiting portion that limits the movement of the transmission member, Here, the transmission member is arranged on the other side of the movable contact portion opposite to the side where the fixed contact portion is arranged in the first direction, and the transmission member is arranged in the first direction. One end part in the second direction crossing the direction is attached to the movable contact part via the attachment part, and the transmission member is arranged so that the other end part opposite to the one end part is urged so that the movable contact The position restricting part is provided separately from the mounting part and is used to restrict the transmission member relative to the movable contact part in the second direction or in the first direction and the Movement in the third direction where the second direction intersects. 2. The contact device according to claim 1, characterized in that, The position defining portion is provided at a position corresponding to the transmission member on at least one of both sides in the third direction, and the position defining portion extends from the movable contact portion to the movable contact portion. The other side of the contact portion extends to a position beyond the end portion of the transmission member in the first direction. 3. The contact device according to claim 2, characterized in that, The position defining portions are provided at positions facing each other on the both sides of the movable contact portion. 4 . The contact device according to claim 1 , wherein: 4 . By the mounting portion, the transmission member and the movable contact portion are mounted at one position. 5 . The contact device according to claim 1 , wherein: 5 . The position defining portion is integrally formed with the movable contact portion. 6. The contact device according to claim 1, characterized in that, The position defining portion is a caulking portion for caulking and fixing the transmission member and the movable contact portion in the vicinity of the mounting portion. 7. The contact device according to any one of claims 1 to 3, wherein The fixed contact portion has a first fixed contact and a second fixed contact, The movable contact portion includes a first movable member formed of a leaf spring and a second movable member having a first movable member opposed to the first fixed contact in a first direction. a movable contact, the second movable member has a second movable contact opposed to the second fixed contact in the first direction, and the first movable contact is oscillated by the movable contact portion The movable contact moves between a first closed position in contact with the first fixed contact and a first open position separated from the first fixed contact, and the second movable contact is in contact with the first fixed contact. move between the second closed position where the second fixed contact contacts and the second open position separated from the second fixed contact, The second movable member is arranged between the first movable member and the fixed contact portion in the first direction, and one end portion of the second movable member in the second direction is Extending in the same direction as one end of the first movable member in the second direction, the other end of the second movable member in the second direction is fixed to the second movable member via the movable member fixing portion. the other end of the first movable member in the second direction, A first distance from the movable member fixing portion to the first movable contact is longer than a second distance from the movable member fixing portion to the second movable contact, The transmission member has a plate shape and is attached to one end of the first movable member in the second direction, The position defining portion is integrally formed with the first movable member. 8. The contact device according to claim 7, characterized in that, The transmission member includes a wide portion having a relatively wide width in the third direction and a narrow portion having a relatively narrow width in the third direction, The transmission member and the first movable member are caulked and fixed at one position of the wide portion, and a through hole penetrating the transmission member and the first movable member is formed in the narrow portion, The position defining portion is provided at a position of the narrow width portion corresponding to the through hole. 9. The contact device according to claim 7, characterized in that, The second movable member is formed of a leaf spring, and the other end portion of the second movable member in the second direction has a direction away from the first movable member in the first direction Protruding step. 10. The contact device according to claim 7, characterized in that, Each of the first movable member and the second movable member includes one or more leaf springs, and the position defining portion is integrally formed with any one of the leaf springs of the first movable member. 11. The contact device of claim 1, wherein: The transmission member includes a wide portion having a relatively wide width in the third direction and a narrow portion having a relatively narrow width in the third direction, The position defining portion is provided at a position corresponding to the narrow width portion. 12. The contact device according to claim 1 or 11, characterized in that, a through hole penetrating the transmission member and the movable contact part is formed, The position defining portion is provided at a position corresponding to the through hole in the third direction. 13. The contact device of claim 1, wherein The position defining portion is a member that wraps and clamps the transmission member and the movable contact portion from the side where the transmission member and the movable contact portion are attached in the second direction. . 14. An electromagnetic relay, characterized in that it has: The contact device according to any one of claims 1 to 13; and An electromagnet device includes a coil, an armature, and the transmission member, and the armature swings according to whether or not the coil is energized to apply a force to the other end of the transmission member. 15 . An apparatus including an electromagnetic relay, wherein the electromagnetic relay is the electromagnetic relay according to claim 14 . 16 .

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