Relay

Abstract

Relay (1), comprising a first contact part (2) comprising a first contact piece (21), a first terminal (22) connected to the first contact piece (21), and a first contact (23) attached to the first contact piece (21); a second contact part (3) comprising a second contact piece (31), a second terminal (32) connected to the second contact piece (31), and a second contact (33) attached to the second contact piece (31); a pressing member (5) which is movable between an on position, which is a position in which it presses the first contact piece (21) and brings the first contact (23) into contact with the second contact (33), and an off position, which is a position in which it is moved in a direction in which the first contact (23) and the second contact (33) are not in contact and also the first contact (23) and the second contact (33) are separated from each other; a drive part (4) which actuates the pressing element (5); and a restricting element (7) which restricts the movement of the first contact piece (21), wherein the pressing element (5) is designed to press the area of ​​the first contact piece (21) between the first terminal (22) and the first contact (23), wherein the first contact (23) is brought into contact with the second contact (33) by moving the pressing element (5) from the off position to the on position and pressing the first contact piece (21) in the direction towards the second contact piece (31) wherein the first contact (23) and the second contact (33) enter a non-contact state by the elastic force of the first contact piece (21), and the pressing element (5) is pushed back by the first contact piece (21) and moves from the on position to the off position when the pressing by the pressing element (5) has been completed, wherein the movement of the first contact piece (21) is restricted by the restricting element (7) before the pressing element (5) moves from the on position to the off position.

Description

1. Technical area

[0001] The present invention relates to a relay. 2. State of the art

[0002] Relays have designs that open and close a contact by driving a pressing element through a driving part such as an electromagnet. For example, in the electromagnetic relay of Patent Literature 1, a pressing element presses a movable contact piece to a fixed contact piece by exciting an electromagnet. As a result, a movable contact formed on the movable contact piece comes into contact with a fixed contact formed on the fixed contact piece. By demagnetizing the electromagnet, the pressing element is pushed back by the elastic force of the movable contact piece. As a result, the movable contact separates from the fixed contact.

[0003] DE 79 09 179 U1 discloses an electromagnetic relay with flat contact elements clamped in a groove of a base body, each of which makes contact directly or via a contact spring on one side of the clamping point and forms at least one connecting pin on the other side of the clamping point. In particular, this configuration is intended to prevent forces acting on the connecting pin from impairing the clamping of the respective contact element or changing the relay's settings. At the same time, the clamping should be designed in such a way that the greatest possible free spring length is maintained outside the clamping point.

[0004] Further prior art is provided by JP S60-148 024 A. Literature of precursor technologyPatent literature

[0005] Patent Literature 1: Japanese Patent Application Laid-Open No. JP 2001 - 143 593 A Overview Task that the invention is intended to solve

[0006] In order to make the contact movement amount large while keeping the movement amount of the pressing element as small as possible, it is advantageous if the pressing element presses the area of ​​the contact piece between the contact formed on a movable portion and a terminal formed on a fixed portion.

[0007] In the relay described above, when the movable contact separates from the fixed contact, an arc occurs between the contacts, causing the temperature to rise instantaneously. In such a case, the pressing element in contact with the movable contact piece is affected by heat. In particular, the area of ​​the contact piece between the contact and the terminal, which is a current-carrying area, easily reaches a high temperature. Therefore, when the pressing element presses the area of ​​the contact piece between the contact and the terminal, there is a risk of damage such as melting of the pressing element due to the high temperature caused by the arc.

[0008] The object of the present invention is to provide a relay in which, despite an increase in the contact movement range, damage to the pressing element due to heat caused by the occurrence of an arc between the contacts can be suppressed. This object is achieved by the subject matter according to claim 1. Preferred embodiments are the subject matter of the dependent claims. The invention is defined by the claims, with aspects of the invention being set forth below. Means of solving the problem

[0009] According to one aspect of the invention, a relay comprises a first contact part, a second contact part, a pressing element, a driving part, and a restricting element. The first contact part has a first contact piece, a first terminal connected to the first contact piece, and a first contact attached to the first contact piece. The second contact part has a second contact piece, a second terminal connected to the second contact piece, and a second contact attached to the second contact piece. The pressing element is movable between an on position and an off position. The on position is a position in which the pressing element presses the first contact piece and brings the first contact into contact with the second contact.The off position is a position in which it is moved in a direction where the first contact and the second contact are not in contact, and the first contact and the second contact are separated from each other. The drive part actuates the pressing element. The restricting element restricts the movement of the first contact piece.

[0010] The pressing member is configured to press the portion of the first contact piece between the first terminal and the first contact. The first contact is brought into contact with the second contact by moving the pressing member from the off position to the on position and pressing the first contact piece toward the second contact piece. When the pressing by the pressing member is completed, the first contact and the second contact enter a non-contact state due to the elastic force of the first contact piece, and the pressing member is pushed back by the first contact piece and moves from the on position to the off position. The movement of the first contact piece is restricted by the restriction member before the pressing member moves from the on position to the off position.

[0011] In the relay of the present invention, the pressing member returns from the on position to the off position by being pushed back by the elastic force of the first contact piece. At this time, the movement of the first contact piece is restricted by the restriction member before the pressing member moves from the on position to the off position. As a result, since only the pressing member continues to move toward the off position, the pressing member moves away from the first contact piece. Therefore, the pressing member can be quickly separated from the first contact piece. This shortens the contact time between the pressing member and the first contact piece. Consequently, even if an arc occurs between the contacts, heat damage to the pressing member can be suppressed.

[0012] The restriction member may restrict the movement of the first contact piece before the first contact piece returns to its natural position.

[0013] The restricting member may restrict the movement of the first contact piece by contacting a first contact part at the position where the first contact is formed.

[0014] The restricting member may restrict the movement of the first contact piece by contacting the first contact part at a position farther than the position at which the first contact is formed on the opposite side to the first terminal.

[0015] The restricting member may restrict the movement of the first contact piece by contacting the first contact part at a position between the first contact and the first terminal.

[0016] The restriction element may include a dummy terminal designed to be non-energized.

[0017] The relay may further comprise a base that holds the first contact part. The restriction element may be formed on the base.

[0018] The relay may further include a base that holds the first contact part and a housing that is mounted on the base. The restriction member may be formed on the housing.

[0019] The pressing element can be made of a resin. Result of the invention

[0020] The present invention can provide a relay in which, despite an increase in the contact movement amount, damage to the pressing member due to heat caused by the occurrence of an arc between the contacts can be suppressed. Short description of the drawings Fig. 1 is an oblique view of a relay according to a first embodiment. Fig. 2 is an oblique view of the relay. Fig. 3 is a disassembled view of the relay. Fig. 4 is a side view of the relay. Fig. 5 is an enlarged view of the vicinity of the pressing member and each clamp part. Fig. 6 is an enlarged view of the vicinity of the pressing member and each clamp part. Fig. 7 is an enlarged view of the vicinity of the pressing member and each clamp part. Fig. Figure 8 is a view showing the natural position of the first contact piece. Fig. 9 is an oblique view of a relay according to a second embodiment. Fig. 10 is an oblique view of a relay according to a first modification of the second embodiment. Fig. 11 is an oblique view of a relay according to a second modification of the second embodiment. Fig. 12 is a sectional view of a relay according to a third embodiment. Forms for carrying out the invention

[0021] Below, relays are explained according to their embodiments based on the drawings. In the following explanation, the individual directions "up / down" and "left / right" are used for convenience. They represent directions when viewing the relay in a specific state, but they do not limit the mounting direction of the relay or anything else.

[0022] Fig. 1 and Fig. 2 are oblique views of a relay 1 according to a first embodiment. Fig. 3 is a disassembled view of Relay 1. Fig. 4 is a side view of the relay 1. The relay 1 includes a first contact part 2, a second contact part 3, a driving part 4, a pressing member 5, a base 6, and a restricting member 7.

[0023] The first contact part 2 is made of a material that has conductivity. As shown in Fig. 3 and Fig. As shown in Figure 4, the first contact part 2 includes a first contact piece 21, a first terminal 22, a first contact 23, and a first fixed part 24. The first contact piece 21 is held by the base 6. The first contact piece 21 extends upward from the base 6. The first contact piece 21 has an elongated shape in the vertical direction. The first contact piece 21 is formed of an elastic material. The first terminal 22 is connected to the first contact piece 21 via the first fixed part 24.

[0024] The first terminal 22, the first fixed part 24, and the first contact piece 21 can be formed as a single piece. Alternatively, the first terminal 22, the first fixed part 24, and the first contact piece 21 can be separate elements. The first fixed part 24 is fixed to the base 6. The first terminal 22 protrudes from the base 6. The first contact 23 is attached to the first contact piece 21.

[0025] The second contact part 3 is formed of a material having conductivity. The second contact part 3 includes a second contact piece 31, a second terminal 32, a second contact 33, and a second fixed part 34. The second contact piece 31 is held by the base 6. The second contact piece 31 extends upward from the base 6. The second contact piece 31 has a vertically elongated shape. The second contact piece 31 is arranged to oppose the first contact piece 21. The second contact piece 31 is formed of an elastic material.

[0026] The second terminal 32 is connected to the second contact piece 31 via the second fixed part 34. The second terminal 32, the second fixed part 34, and the second contact piece 31 can be formed integrally. Alternatively, the second terminal 32, the second fixed part 34, and the second contact piece 31 can be separate elements. The second fixed part 34 is fixed to the base 6. The second terminal 32 protrudes from the base 6. The second contact 33 is attached to the second contact piece 31. The second contact 33 is arranged to face the first contact 23.

[0027] The drive part 4 generates a driving force to actuate the pressing element 5. Specifically, the drive part 4 is an electromagnet that generates an electromagnetic force to actuate the pressing element 5. The drive part 4 includes a coil 41, a coil body 42, an iron core 43, a yoke 44, and a movable iron piece 45. The coil 41 is wound on the coil body 42. The axis line of the coil 41 runs in the vertical direction. A coil terminal 47 is connected to the coil 41. The iron core 43 is inserted into the coil body 42.

[0028] The yoke 44 has a bent shape into an L-shape and is connected to the lower end portion of the iron core 43. More specifically, the yoke 44 has a yoke bottom portion 441 and a yoke side portion 442. The yoke bottom portion 441 is arranged below the coil 41. The yoke bottom portion 441 is connected to the lower end portion of the iron core 43. The yoke side portion 442 is arranged laterally of the coil 41. The yoke side portion 442 extends in the vertical direction.

[0029] The movable iron piece 45 is rotatably supported at the upper end portion of the yoke 44. More specifically, the movable iron piece 45 is rotatably supported at the upper end portion of the yoke side portion 442. The movable iron piece 45 is disposed above the iron core 43. The end portion of the movable iron piece 45 has a downwardly bent shape. The movable iron piece 45 has a tip end portion 451 projecting downward. An elastic member 46 is attached to the movable iron piece 45 and the yoke 44. The elastic member 46 in the present embodiment is a leaf spring. The elastic member 46 biases the movable iron piece 45 in a direction in which the tip end portion 451 of the movable iron piece 45 moves away from the pressing member 5.

[0030] The pressing element 5 is driven by the drive part 4. The pressing element 5 is rotatably supported on the base 6. The pressing element 5 presses the first contact piece 21 by being driven by the drive part 4. The pressing element 5 is made of a resin. However, the pressing element 5 may also be formed of a material other than a resin.

[0031] Fig. 5 to Fig. 7 are enlarged views of the surroundings of the pressing element 5 and the first contact part 2 and the second contact part 3. The pressing element 5 is designed so that it can be inserted into the Fig. 5 shown off position and the one in Fig. 7 shown on position is movable. As shown in Fig. 5, the off position is a position in which it is moved in a direction in which the first contact 23 and the second contact 33 are not in contact and the first contact 23 and the second contact 33 are separated from each other. In the off position, the pressing element 5 is away from the first contact piece 21. As shown in Fig. As shown in Fig. 7, the pressing element 5 presses the first contact piece 21 in the on position and brings the first contact 23 into contact with the second contact 33.

[0032] As in Fig. As shown in Figure 3, the pressing member 5 includes a main body portion 51, a rotational axis portion 52, a receiving portion 53, and a pressing portion 54. The main body portion 51 has a plate-like shape. The main body portion 51 protrudes upward from the base 6. The rotational axis portion 52 is formed at the bottom portion of the main body portion 51. The rotational axis portion 52 is rotatably supported by the base 6. The receiving portion 53 protrudes from the main body portion 51 toward the movable iron piece 45. The tip end of the receiving portion 53 is opposed to the tip end portion 451 of the movable iron piece 45.

[0033] The pressing part 54 protrudes from the main body part 51 toward the first contact piece 21. The pressing part 54 is positioned lower than the upper end of the main body part 51. The tip end of the pressing part 54 faces the first contact piece 21. As will be discussed later, the pressing part 54 is configured to press the portion of the first contact piece 21 between the first terminal 22 and the first contact 23. More specifically, the pressing part 54 is configured to press the portion of the first contact piece 21 between the first contact 23 and the first fixed part 24.

[0034] The base 6 holds the driving part 4, the pressing element 5, the first contact part 2, the second contact part 3, and the restricting element 7. On the base 6, a housing 8 (see Fig. 12). The base 6 and the housing 8 are made of a resin, for example, but may also be made of a material other than a resin.

[0035] The base 6 has a first wall part 61. The first wall part 61 extends in the vertical direction. The first wall part 61 is arranged between the movable iron piece 45 and the yoke 44. The base 6 has a second wall part 62. The second wall part 62 extends in the vertical direction. The second wall part 62 is arranged between the main body part 51 of the pressing member 5 and the movable iron piece 45. The collecting part 53 extends beyond the second wall part 62 to the tip end portion 451 of the movable iron piece 45. The base 6 has a third wall part 63. The third wall part 63 extends in the vertical direction. The third wall part 63 is arranged laterally of the pressing member 5 and the first contact piece 21.

[0036] The base 6 has an axis holding part 64. The axis holding part 64 has a circular arc-shaped recessed shape. The axis holding part 64 rotatably holds the rotation axis part 52 of the pressing element 5. The base 6 has a first contact holding part 65. The first contact holding part 65 has a groove shape. The first fixed part 24 is inserted into the first contact holding part 65. This fixes the first contact part 2 to the base 6. The base 6 has a second contact holding part 66. The second contact holding part 66 has a groove shape. The second fixed part 34 is inserted into the second contact holding part 66. This fixes the second contact part 3 to the base 6.

[0037] As in Fig. As shown in Figure 2, the base 6 includes a restricting member holding portion 67. The restricting member holding portion 67 has a groove shape. A fixed portion 73 of the restricting member 7, described later, is inserted into the restricting member holding portion 67. This fixes the restricting member 7 to the base 6.

[0038] The restricting member 7 is held on the base 6. The restricting member 7 restricts the movement of the first contact piece 21 when the first contact piece 21 pushes the first contact piece 21 back from the on position to the off position. In the present embodiment, the restricting member 7 is a dummy terminal designed so that it is not energized. That is, the restricting member 7 has a shape similar to a contact part forming a so-called b-contact.

[0039] As in Fig. As shown in Figure 3, the restriction element 7 includes a holding part 71 and a contact part 72. Furthermore, the restriction element 7 includes a fixed part 73 connected to the holding part 71. The holding part 71, the contact part 72, and the fixed part 73 are integrally formed. However, the holding part 71, the contact part 72, and the fixed part 73 may also be separate elements.

[0040] The fixed part 73 is fixed to the base 6 as described above. The holding part 71 has the same shape as the contact pieces. The contact part 72 has the same shape as the contacts. That is, the contact part 72 has a protruding shape from the holding part 71. However, no portion corresponding to a terminal is formed on the restricting member 7. Furthermore, no contact is attached to the restricting member 7, and the contact part 72 is formed on the holding part 71 by press working or the like.

[0041] The holding part 71 has an L-shaped curved shape. More specifically, the holding part 71 has a first holding part 711 and a second holding part 712. The first holding part 711 extends upward from the base 6. The fixed part 73 is connected to the first holding part 711. The second holding part 712 extends laterally from the upper end of the first holding part 711. The second holding part 712 extends from the upper end of the first holding part 711 to a position opposite the first contact piece 21. The third wall part 63 is arranged between the first holding part 711 and the first contact piece 21.

[0042] The second holding part 712 extends from the upper end of the first holding part 711 above the third wall part 63 to a position opposite the first contact piece 21. The second holding part 712 is arranged higher than the pressing part 54. Consequently, the restricting element 7 is arranged so that it does not impair the range of movement of the pressing element 5. The contact part 72 is formed on the second holding part 712. The contact part 72 is opposite the position at which the first contact 23 is formed on the first contact piece 21. As shown in Fig. As shown in Fig. 6, the restriction element 7 restricts the movement of the first contact piece 21 by contact of the contact part 72 with the first contact part 2.

[0043] The restricting element 7 restricts the movement of the first contact piece 21 by contacting the first contact part 2 at the position where the first contact 23 is formed. The state in which the restricting element 7 contacts the first contact part 2 is a state in which the first contact piece 21 is pressed from its natural position toward the second contact piece 31. Fig. 8, the dashed first contact piece 21' shows the natural position of the first contact piece 21.

[0044] Here, the natural position means a position of the first contact piece 21 when no restriction member 7 is formed and the contact piece is in a state not pressed by the pressing member 5. Consequently, the first contact piece 21 returns to its natural position when no restriction member 7 is present and the load from the pressing member 5 is released. In other words, the restriction member 7 restricts the movement of the first contact piece 21 before the first contact piece 21 returns to its natural position when the load from the pressing member 5 is released.

[0045] Next, the operation of the relay 1 according to the present embodiment will be explained.

[0046] In the state in which the coil 41 is not energized and the drive part 4 is demagnetized, the pressing element 5 is as in Fig. 5 is positioned in the off position. In this state, the pressing element 5 does not touch the first contact piece 21 and does not press the first contact piece 21. The first contact piece 21 is in contact with the restriction element 7, and the first contact 23 is not in contact with the second contact 33 (contact break state).

[0047] When the coil 41 is energized and the drive part 4 comes into a magnetized state, the movable iron piece 45 is attracted by the iron core 43 and rotates around the upper end of the yoke 44 (in Fig. 5 counterclockwise). As a result, the tip end portion 421 of the movable iron piece 45 presses the receiving part 53 of the pressing element 5 and the pressing element 5 rotates around the rotation axis part 52 (in Fig. 5 clockwise). By rotating the pressing element 5, the pressing part 54 moves as in Fig. 6 to the first contact piece 21 and touches the first contact piece 21. When the pressing element 5 continues to rotate, the pressing part 54 presses the first contact piece 21 to the second contact piece 31. As a result, the first contact piece 21 moves away from the restriction element 7 and the pressing element 5 moves as shown in Fig. 7, the first contact 23 moves to the on position, and the first contact 23 touches the second contact 33 (contact on state). As described above, the first contact 23 is brought into contact with the second contact 33 by the pressing member 5 moving from the off position to the on position and pressing the first contact piece 21 toward the second contact piece 31.

[0048] Conversely, if in the Fig. 7, the current supply to the coil 41 is stopped and the drive part 4 enters the demagnetized state, the pressing by the pressing element 5 is terminated. As a result, the movable iron piece 45 rotates due to the elastic force of the elastic element 46 in a direction in which the tip portion 451 of the movable iron piece 45 moves away from the pressing element 5 (in Fig. 7 clockwise). When the tip end portion 451 of the movable iron piece 45 moves away from the pressing member 5, the pressing member 5 is pushed back by the elastic force that tries to return the first contact piece 21 to its natural position, and rotates from the on position to the off position (in Fig. 7 counterclockwise). This results in the Fig. 6, a state of non-contact occurs between the first contact 23 and the second contact 33.

[0049] The first contact piece 21 pushes the pressing element 5 back while remaining in contact with the pressing element 5 until it reaches the position where it comes into contact with the restricting element 7. Then, the movement of the first contact piece 21 ends due to the contact with the restricting element 7 before the pressing element 5 moves from the on position to the off position. That is, the movement of the first contact piece 21 in the direction in which the pressing element 5 is pushed back is restricted by the restricting element 7 before it returns to its natural position. Therefore, the pressing element 5 separates as shown in Fig. 5 from the first contact piece 21 and returns it to its off position.

[0050] In the relay 1 according to the present embodiment explained above, when switching from the contact-on state to the contact-off state, the pressing member 5 moves away from the first contact piece 21 before the first contact piece 21 reaches its natural position (the first contact piece 21' in Fig. 8). Therefore, the pressing member 5 can be separated from the first contact piece 21 more quickly than when the pressing member 5 separates from the first contact piece 21 when the first contact piece 21 has returned to its natural position. This allows the time during which the pressing member 5 is in contact with the first contact piece 21 to be shortened. Consequently, even if an arc occurs between the contacts, heat damage to the pressing member 5 can be suppressed.

[0051] Next, a relay 1 according to a second embodiment is explained. Fig. 9 is an oblique view of the relay 1 according to the second embodiment. In the relay 1 according to the second embodiment, the restricting member 7 is formed on the base 6. The restricting member 7 is formed integrally with the base 6. Or, the restricting member 7 may be a separate member from the base 6. More specifically, the restricting member 7 includes a first holding part 711, a second holding part 712, and a contact part 72. The first holding part 711 protrudes upward from the third wall part 63. The second holding part 712 extends laterally from the upper end of the first holding part 711. The contact part 72 is opposite to the position where the first contact 23 is formed on the first contact piece 21. The restricting member 7 restricts the movement of the first contact piece 21 by the contact part 72 contacting the first contact piece 21 at the position where the first contact 23 is formed.

[0052] In the relay 1 according to the present embodiment, the pressing member 5 can be quickly removed from the first contact piece 21, as in the relay 1 according to the first embodiment. This can shorten the time during which the pressing member 5 is in contact with the first contact piece 21. Consequently, even if an arc occurs between the contacts, heat damage to the pressing member 5 can be suppressed.

[0053] Fig. 10 is an oblique view of a relay 1 according to a first modification of the second embodiment. As shown in Fig. As shown in FIG. 10, the restricting member 7 can also restrict the movement of the first contact piece 21 by contacting the first contact piece 21 at a position located farther than the position where the first contact 23 is formed on the first contact piece 21, on the opposite side to the first terminal 22. That is, the restricting member 7 can also restrict the movement of the first contact piece 21 by contacting the first contact piece 21 further on the tip end side with respect to the position where the first contact 23 is formed on the first contact piece 21.When an arc has occurred between the contacts, the temperature in the area located on the tip end side with respect to the position where the first contact 23 is formed on the first contact piece 21 is lower than in the area where the first contact 23 is formed or in the area between the first contact 23 and the first terminal 22. Therefore, in the relay 1 according to the first modification of the second embodiment, an influence of heat on the restricting member 7 can be suppressed.

[0054] Fig. 11 is an oblique view of a relay 1 according to a second modification of the second embodiment. As shown in Fig. 11, the restricting member 7 can also restrict the movement of the first contact piece 21 by contacting the first contact piece 21 at a position between the first contact 23 and the first terminal 22.

[0055] Next, a relay 1 according to a third embodiment is explained. Fig. 12 is an oblique view of the relay 1 according to the third embodiment. In the relay 1 according to the third embodiment, the restricting member 7 is formed on the housing 8. The restricting member 7 is formed integrally with the housing 8. Or, the restricting member 7 and the housing 8 may be separate members. In the present embodiment, the restricting member 7 protrudes downward from the upper surface of the housing 8. The restricting member 7 restricts the movement of the first contact piece 21 by contacting the first contact piece 21 further on the tip end side with respect to the position where the first contact 23 is formed on the first contact piece 21.

[0056] In the relay 1 according to the present embodiment, the pressing member 5 can be quickly removed from the first contact piece 21, as in the relay 1 according to the first embodiment. This can shorten the time during which the pressing member 5 is in contact with the first contact piece 21. Consequently, even if an arc occurs between the contacts, heat damage to the pressing member 5 can be suppressed.

[0057] In the foregoing, embodiments of the present invention have been described, but the present invention is not limited to the above embodiments, and various changes are possible within a range not deviating from the gist of the invention.

[0058] The structure of the first contact part 2, the second contact part 3, the driving part 4, the pressing member 5, the base 6 or the restricting member 7 is not limited to that of the above embodiments, but can also be changed.

[0059] The restricting member 7 as a dummy terminal according to the first embodiment can also restrict the movement of the first contact piece 21 by contacting the first contact piece 21 further on the tip end side with respect to the position where the first contact 23 is formed on the first contact piece 21. Or, the restricting member 7 as a dummy terminal can also restrict the movement of the first contact piece 21 by contacting the first contact piece 21 at a position between the first contact 23 and the first terminal 22. This applies even when the restricting member 7 is formed on the housing 8 as in the third embodiment. Commercial application

[0060] The present invention can provide a relay in which, despite an increase in the contact movement amount, damage to the pressing member due to heat caused by the occurrence of an arc between the contacts can be suppressed. Explanation of reference symbols 21 first contact piece 22 first terminal 23 first contact 2 first contact part 31 second contact piece 32 second terminal 33 second contact 3 second contact part 5 Press element 4 Drive part 7 Restriction element 6 Base 8 housings

Claims

[1] Relay (1), comprising a first contact part (2) comprising a first contact piece (21), a first terminal (22) connected to the first contact piece (21), and a first contact (23) attached to the first contact piece (21); a second contact part (3) comprising a second contact piece (31), a second terminal (32) connected to the second contact piece (31), and a second contact (33) attached to the second contact piece (31); a pressing member (5) which is movable between an on position, which is a position in which it presses the first contact piece (21) and brings the first contact (23) into contact with the second contact (33), and an off position, which is a position in which it is moved in a direction in which the first contact (23) and the second contact (33) are not in contact and also the first contact (23) and the second contact (33) are separated from each other; a drive part (4) which actuates the pressing element (5); and a restricting element (7) which restricts the movement of the first contact piece (21), wherein the pressing element (5) is designed to press the area of ​​the first contact piece (21) between the first terminal (22) and the first contact (23), wherein the first contact (23) is brought into contact with the second contact (33) by moving the pressing element (5) from the off position to the on position and pressing the first contact piece (21) in the direction towards the second contact piece (31) wherein the first contact (23) and the second contact (33) enter a non-contact state by the elastic force of the first contact piece (21), and the pressing element (5) is pushed back by the first contact piece (21) and moves from the on position to the off position when the pressing by the pressing element (5) has been completed, wherein the movement of the first contact piece (21) is restricted by the restricting element (7) before the pressing element (5) moves from the on position to the off position. [2] The relay (1) according to claim 1, wherein the restricting member (7) restricts the movement of the first contact piece (21) before the first contact piece (21) returns to its natural position. [3] The relay (1) according to claim 1 or 2, wherein the restricting member (7) restricts the movement of the first contact piece (21) by contacting the first contact part (2) at the position where the first contact (23) is formed. [4] The relay (1) according to claim 1 or 2, wherein the restricting member (7) restricts the movement of the first contact piece (21) by contacting the first contact part (2) at a position which is further than the position at which the first contact (23) is formed, on the side opposite to the first terminal (22). [5] The relay (1) according to claim 1 or 2, wherein the restricting member (7) restricts the movement of the first contact piece (21) by contacting the first contact part (2) at a position between the first contact (23) and the first terminal (22). [6] Relay (1) according to one of claims 1 to 5, wherein the restriction element (7) has a dummy terminal which is designed so that it is not energized. [7] The relay (1) according to any one of claims 1 to 5, further comprising a base (6) holding the first contact part (2), wherein the restriction member (7) is formed on the base (6). [8] Relay (1) according to one of claims 1 to 5, further comprising a base (6) holding the first contact part (2), and a housing (8) which is placed on the base (6), wherein the restriction element (7) is formed on the housing (8). [9] Relay (1) according to one of claims 1 to 8, wherein the pressing element (5) consists of a resin.

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