RELAY

Abstract

Relays included: a movable contact terminal (21); a contact piece (22) which is attached to the movable contact terminal (21) and comprises a first section (35) and a second section (36) which extend in a longitudinal direction and are separated from each other; a first movable contact (23) which is attached to the first section (35); a second movable contact (24) which is attached to the second section (36); a fixed contact terminal (25) which is arranged in a position opposite the contact piece (22); a first fixed contact (26) which is attached to the fixed contact terminal (25) and is arranged in a position opposite the first movable contact (23); a second fixed contact (27) which is attached to the fixed contact terminal (25) and arranged in a position opposite the second movable contact (24); and a connecting element (6) that is able to exert pressure on the contact piece (22), wherein the connecting element (6) comprises: a first pressure-exerting section (81) configured to exert pressure on the first section (35) and extending in a width direction of the contact piece (22), and a second pressure-exerting section (82) configured to exert pressure on the second section (36) and extending in the longitudinal direction.

Description

TECHNICAL AREA

[0001] The present invention relates to a relay. STATE OF THE ART

[0002] A relay comprising several movable contacts and several fixed contacts is known. For example, a contact element of a relay disclosed in patent document 1 comprises a first section and a second section. A movable normally open / normally closed contact is attached to the first section, while a movable energizing contact is attached to the second section. A fixed normally open / normally closed contact and a fixed energizing contact are attached to a first fixed contact terminal.

[0003] In the relay described above, the contacts are opened or closed by pressing a card against the contact piece. The card includes a gap that extends across the width of the contact piece. A front end of the first section and a front end of the second section are positioned within this gap.

[0004] The leading edge of the first segment and the leading edge of the second segment are pressed towards the fixed contact by one edge of the card's slot, corresponding to the card's movement in that direction. This causes the movable contacts to move towards and make contact with the fixed contacts. Conversely, the leading edge of the first segment and the leading edge of the second segment are pressed away from the fixed contact by the other edge of the card's slot, corresponding to the card's movement in that direction. This causes the movable contacts to separate from the fixed contacts. State-of-the-art patent document

[0005] Patent document 1: JP 2015 - 127 996 A

[0006] Further state of the art is formed by EP 2 822 011 A1 and US 8 330 564 B2. OVERVIEW OF THE INVENTION: SOLVING TASKS THROUGH THE INVENTION

[0007] In the relay, which comprises multiple movable and fixed contacts, the corresponding values ​​of the contact parameters, such as the contact force and the contact separation force, differ depending on the respective contact. For example, in the relay disclosed in patent document 1, the movable normally open / normally closed contact comes into contact with the fixed normally open / normally closed contact before the movable energizing contact contacts the fixed energizing contact. As a result, the movable normally open / normally closed contact and the fixed normally open / normally closed contact achieve opening and closing of the electrical load, while the movable energizing contact and the fixed energizing contact only achieve energizing.Accordingly, no arc is generated between the moving current contact and the stationary current contact, even if an arc is generated between the moving normally open / normally closed contact and the stationary normally open / normally closed contact.

[0008] An arc generated between the contacts can cause them to weld together. Therefore, it is preferable to increase the separating force acting on the movable normally open / normally closed contact to separate it from the stationary normally open / normally closed contact at the moment of welding. However, in the relay described above, it is difficult to adjust the respective contact parameters for each contact accordingly.

[0009] One object of the present invention is to provide a relay in which the contact parameters for each contact of the multiple movable contacts can be easily set. MEANS OF SOLVING THE TASK

[0010] A relay according to one aspect of the present invention comprises a movable contact terminal, a contact element, a first movable contact, a second movable contact, a fixed contact terminal, a first fixed contact, a second fixed contact, and a connecting element. The contact element is attached to the movable contact terminal. The contact element comprises a first section and a second section. The first section and the second section extend longitudinally and are separated from each other. The first movable contact is attached to the first section. The second movable contact is attached to the second section. The fixed contact terminal is arranged at a position opposite the contact element. The first fixed contact is attached to the fixed contact terminal and arranged at a position opposite the first movable contact.The second fixed contact is attached to the fixed contact terminal and positioned opposite the second movable contact. The connecting element is capable of exerting pressure on the contact piece.

[0011] The connecting element comprises a first pressure-exerting section and a second pressure-exerting section. The first pressure-exerting section is configured to exert pressure on the first section and extends in a width direction of the contact piece. The second pressure-exerting section is configured to exert pressure on the second section and extends in a length direction.

[0012] In such a relay, the first and second pressure-exerting sections extend in different directions. This allows the position or size of the first section, upon which pressure is exerted by the first pressure-exerting section, and the position or size of the second section, upon which pressure is exerted by the second pressure-exerting section, to be easily adjusted by freely setting the dimensions and positions of the first and second pressure-exerting sections. Accordingly, the contact parameters for both the first and second moving contacts can be easily adjusted.

[0013] The connecting element can include a third and a fourth pressure-exerting section. The third pressure-exerting section can be configured to exert pressure on the first section and extends in the width direction of the contact piece. The fourth pressure-exerting section can be configured to exert pressure on the second section and extends in the length direction. The first pressure-exerting section can push the first section away from the fixed contact terminal. The second pressure-exerting section can push the second section away from the fixed contact terminal. The third pressure-exerting section can push the first section toward the fixed contact terminal. The fourth pressure-exerting section can push the second section toward the fixed contact terminal.

[0014] This allows the separating force of the first moving contact to be easily adjusted by changing the dimensions and position of the first pressure-exerting section. The separating force of the second moving contact is easily adjusted by changing the dimensions and position of the second pressure-exerting section. The contact force of the second moving contact is easily adjusted by changing the dimensions and position of the third pressure-exerting section. The contact force of the first moving contact is easily adjusted by changing the dimensions and position of the fourth pressure-exerting section.

[0015] The length of the first pressure-exerting section in the width direction of the contact piece can differ from the length of the third pressure-exerting section in the width direction of the contact piece. This allows the first and third pressure-exerting sections to exert pressure on different positions of the first section.

[0016] The first pressure-exerting section is shorter than the third pressure-exerting section in the width direction of the contact piece. This allows the first and third pressure-exerting sections to exert pressure on different positions of the first section.

[0017] The first section can include a first contact section upon which pressure is exerted by the first pressure-exerting section. The first contact section can be positioned at a distance from the first moving contact in the lateral direction. This ensures a large distance between the first moving contact and the section of the first part upon which pressure is exerted by the first pressure-exerting section. Consequently, the separating force of the first moving contact can be increased.

[0018] The first segment can include a third contact section upon which pressure is exerted by the third pressure-exerting section. At least part of the third contact section can be positioned closer to the first moving contact in the lateral direction than the first contact section. This allows the third contact section to exert pressure on a position near the first moving contact at the moment of contact between the first moving contact and the first fixed contact. Consequently, the contact stability between the first moving contact and the first fixed contact can be improved.

[0019] The length of the second pressure-exerting section in the longitudinal direction of the contact piece can differ from the length of the fourth pressure-exerting section in the longitudinal direction of the contact piece. This allows the second and fourth pressure-exerting sections to exert pressure on different positions of the second section.

[0020] The second section can include a second contact section upon which pressure is exerted by the second pressure-exerting section. The first contact section can be located on one side of the front end of the contact piece relative to the second contact section. This causes the first pressure-exerting section to exert pressure on the first contact section, which can lead to a significant displacement of the first moving contact. Consequently, the separating force of the first moving contact can be increased.

[0021] The second section can include a fourth contact section, upon which pressure is exerted by the fourth pressure-exerting section. The third contact section can be positioned on one side of the front end of the contact piece with respect to the fourth contact section. This causes the third pressure-exerting section to exert pressure on the third contact section, which can lead to a significant displacement of the first movable contact. Consequently, the contact force of the first movable contact can be increased.

[0022] The connecting element can comprise a connecting part and a first projection. The connecting part can extend from the third pressure-exerting section in one direction towards the fixed contact terminal of the contact piece. The first projection can project laterally from the connecting part. The first contact section can be located on the first projection. This allows the dimensions of the first contact section to be easily adjusted by changing the projection length.

[0023] The connecting element can include a first recess formed by the connecting part, the first projection, and the third pressure-exerting section. Part of the first section can be positioned within the first recess. This configuration facilitates the attachment of the connecting element to the relay, compared to a configuration in which the connecting element has a bore through which the first section is inserted.

[0024] The connecting element can further comprise a second projection. This second projection can extend longitudinally from the connecting part. The second contact section can be provided on this second projection. This allows the dimensions of the second contact section to be easily adjusted by changing the length of the second projection.

[0025] The connecting element can further include a third projection. This third projection can extend longitudinally from the connecting part. The fourth contact section can be provided on this third projection. This allows the dimensions of the fourth contact section to be easily adjusted by changing the length of the third projection.

[0026] The connector can include a second recess formed by the connecting part, the second projection, and the third projection. Part of the second component can be positioned within the second recess. This configuration facilitates the attachment of the connector to the relay compared to a configuration where the connector has a hole through which the second component is inserted.

[0027] A front end of the first section can be positioned on the side of the front end of the contact piece, relative to a front end of the second section. At least part of the connecting element can be positioned longitudinally between the front end of the first section and the front end of the second section. This allows the connecting element to exert pressure on the front end of both the first and second sections. Furthermore, the size of the relay can be reduced.

[0028] The connecting element can be positioned within an area the width of the contact piece. This allows the size of the relay to be reduced.

[0029] The width of the second section can be smaller than the width of the first section. The second section can have a rib located along one of its lateral edges and extending longitudinally. This rib can increase the stiffness of the second section. IMPACT OF THE INVENTION

[0030] According to the present invention, the contact parameters for each contact of the multiple movable contacts can be easily adjusted. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a perspective view of a relay according to one embodiment. Fig. Figure 2 is a top view of the relay in a reset state. Fig. Figure 3 is a top view of the relay in a set state. Fig. Figure 4 is a top view of a contact unit according to the embodiment. Fig. Figure 5 is a perspective view of the contact piece unit. Fig. Figure 6 is a perspective view of the contact piece unit. Fig. Figure 7 is a perspective exploded view of the contact piece unit. Fig. Figure 8 is a side view of the contact unit. Fig. Figure 9 is a side view of the contact piece unit. Fig. Figure 10 is a perspective view of a contact piece and a connecting element. Fig. Figure 11 is a side view of the contact piece and the connecting element. Fig. Figure 12 is a perspective view of the connecting element. Fig. Figure 13 is a view showing the connecting element as viewed from the side of the proximal end of the contact piece. Fig. Figure 14 is a view showing the contact piece and the connecting element in a reset state. Fig. Figure 15 is a view showing the contact piece and the connecting element in the reset state. Fig. Figure 16 is a view showing the contact piece and the connecting element in a set state. Fig. Figure 17 is a view showing the contact piece and the connecting element in the set state. Fig. Figure 18 illustrates a method for adjusting the separating force. Fig. Figure 19 illustrates a procedure for adjusting the contact force. Fig. Figure 20 is a view showing a connecting element according to a first modified example. Fig. Figure 21 is a view showing a connecting element according to a second modified example. FORM OF EXECUTION OF THE INVENTION

[0031] The following describes a relay according to one embodiment with reference to the drawings. Fig. Figure 1 is a perspective view of a relay 1 according to one embodiment. Fig. Figure 2 is a top view of relay 1 in a reset state. Fig. Figure 3 is a top view of relay 1 in a set state. Relay 1 comprises a base 2, a drive unit 3, a movable unit 4, a support element 5, a connecting element 6, a contact unit 7, and a fixed contact unit 8. The support element 5 is in the Fig. 2 and Fig. 3 not shown.

[0032] The base 2 houses the drive unit 3, the movable unit 4, the connecting element 6, the contact unit 7 and the fixed contact unit 8. A cover element (not shown) is attached to the base 2.

[0033] The drive unit 3 drives the movable unit 4. The drive unit 3 generates an electromagnetic force to rotate the movable unit 4. As in Fig. As shown in Figure 2, the drive unit 3 comprises a winding 11, a coil 12, a first yoke 13, and a second yoke 14. The winding 11 is wound around the coil 12. A winding terminal 15 is connected to the winding 11 so that the winding 11 can be supplied with voltage via the winding terminal 15. An iron core (not shown) is inserted into the coil 12. The first yoke 13 is connected to one end of the iron core, while the second yoke 14 is connected to the other end of the iron core.

[0034] The movable unit 4 is rotatably mounted on the base 2. The movable unit 4 is arranged between the first yoke 13 and the second yoke 14. The movable unit 4 comprises a first armature 16, a second armature 17, a permanent magnet 18, and a movable housing 19. The first armature 16, the second armature 17, and the permanent magnet 18 are attached to the movable housing 19. The movable housing 19 is rotatably mounted on the base 2 about a rotating shaft 191. The movable housing 19 includes an arm 192. The arm 192 extends toward the connecting element 6.

[0035] The first anchor 16 comprises a first end 161 and a second end 162. The second anchor 17 comprises a third end 171 and a fourth end 172. The first end 161 and the third end 171 project from the movable housing 19 in the same direction. The second end 162 and the fourth end 172 project from the movable housing 19 in the opposite direction to that projected by the first end 161 and the third end 171.

[0036] The connecting element 6 connects the movable housing 19 and the contact unit 7. The connecting element 6 is arranged to intersect a movable contact terminal 21 of the contact unit 7, which is described in plan view below. One end of the connecting element 6 is connected to the movable housing 19. The other end of the connecting element 6 is connected to the contact unit 7. In particular, the connecting element 6 includes a connecting bore 601. A front end of the arm 192 of the movable housing 19 is arranged in the connecting bore 601. This configuration causes the arm 192 to engage with the connecting element 6 when the connecting element 6 is driven by the movable housing 19. The connecting element 6 is described in detail below.

[0037] The contact unit 7 comprises a movable contact terminal 21, a contact piece 22, and movable contacts 23 and 24. The contact piece 22 is connected to the movable contact terminal 21. The contact piece 22 is positioned opposite the movable contact terminal 21. The connecting element 6 described above can exert pressure on the contact piece 22. The movable contacts 23 and 24 are attached to the contact piece 22.

[0038] The fixed contact unit 8 comprises a fixed contact terminal 25 and fixed contacts 26 and 27. The fixed contact 25 is arranged in a position opposite the contact piece 22. The fixed contacts 26 and 27 are attached to the fixed contact terminal 25. The fixed contacts 26 and 27 are arranged in positions opposite the movable contacts 23 and 24, respectively.

[0039] The following describes the operation of relay 1. In the Fig. In the reset state shown in Figure 2, the first end 161 of the first armature 16 contacts the first yoke 13, while the second end 162 is disconnected from the second yoke 14. The fourth end 172 of the second armature 17 contacts the second yoke 14, while the third end 171 is disconnected from the first yoke 13. The movable contacts 23 and 24 are disconnected from the fixed contacts 26 and 27, respectively.

[0040] When the winding 11 is energized in a predetermined direction, an electromagnetic force is generated, causing the movable unit 4 to move in a predetermined forward direction (in Fig. 2 (clockwise). The movable unit 4 therefore rotates in the forward direction. The connecting element 6 moves counterclockwise. Fig. 2 according to the rotation of the movable unit 4 in the forward direction. This causes a front end of the contact piece 22 to move in the left direction. Fig. 2, and the movable contacts 23 and 24 move accordingly towards the fixed contacts 26 and 27. The movable contacts 23 and 24 thereby come into contact with the fixed contacts 26 and 27. As a result, the Fig. 2 shown reset state of relay 1 in the in Fig. The 3 displayed set state has been switched.

[0041] In the set state, the first end 161 of the first anchor 16 is separated from the first yoke 13, while the second end 162 is in contact with the second yoke 14, as in Fig. Figure 3 shows that the fourth end 172 of the second armature 17 is separated from the second yoke 14, while the third end 171 is in contact with the first yoke 13. The set state is maintained by the magnetic force of the permanent magnet 18, even when the voltage supply to the winding 11 is terminated in this state.

[0042] If the winding 11 is subsequently supplied with voltage in the direction opposite to the previously predetermined direction, an electromagnetic force is generated by which the movable unit 4 is rotated in the direction opposite to the previous forward direction (counterclockwise). Fig. 3) As a result, the movable unit 4 rotates in the opposite direction. The connecting element 6 moves clockwise. Fig. 3 in accordance with the rotation of the movable unit 4 in the opposite direction. This causes the front end of the contact piece unit 7 to move clockwise. Fig. 3, and accordingly the movable contacts 23 and 24 move away from the stationary contacts 26 and 27, respectively. The movable contacts 23 and 24 are thereby separated from the stationary contacts 26 and 27, respectively. As a result, the Fig. 3 shown set state of relay 1 in the in Fig. The reset state shown in Figure 2 is switched. The reset state is maintained by the magnetic force of the permanent magnet 18, even if the voltage supply to the winding 11 is terminated in this state.

[0043] The contact unit 7 is described below. Fig. Figure 4 is a top view of the contact unit 7. Fig. 5 and Fig. Figure 6 shows perspective views of contact piece unit 7. Fig. Figure 7 is a perspective exploded view of contact unit 7. Fig. Figure 8 is a side view of the contact unit 7, viewed from the side of the movable contact terminal 21. Fig. Figure 9 is a side view of the contact unit 7, viewed from the side of the contact piece 22.

[0044] As in the Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 to Fig. As shown in Figure 9, the movable contact terminal 21 has the form of an elongated plate. The movable contact terminal 21 has a front end section 31 and a proximal end section 32. As shown in Fig. As shown in Figure 2, the front end section 31 of the movable contact terminal 21 is arranged such that it projects outwards from the base 2. The proximal end section 32 of the movable contact terminal 21 is arranged inside the base 2.

[0045] According to this embodiment, a direction parallel to a direction extending from the proximal end section 32 to the front end section 31 is referred to as the longitudinal direction. The longitudinal direction corresponds to a top-to-bottom direction in Fig. 4. A direction perpendicular to the longitudinal direction and a direction of the plate thickness of the movable contact connection 21 is referred to as the width direction. The direction of the plate thickness of the movable contact connection 21 corresponds to a direction from right to left in Fig. 4. The latitude direction is a direction perpendicular to the leaf of Fig. 4 and corresponds to a direction from right to left in the Fig. 8 and Fig. 9.

[0046] The movable contacts 23 and 24 comprise the first movable contact 23 and the second movable contact 24. The first movable contact 23 and the second movable contact 24 are separated from each other longitudinally along the contact piece 22. In particular, the first movable contact 23 is positioned on the side of the front end of the contact piece 22, relative to the second movable contact 24. The diameter of the first movable contact 23 is larger than the diameter of the second movable contact 24. The height of the first movable contact 23 from the contact piece 22 is greater than the height of the second movable contact 24 from the contact piece 22. The number of movable contacts is not limited to two; there can be more than two movable contacts.

[0047] The contact piece 22 is connected to the proximal end section 32 of the movable contact terminal 21. The contact piece 22 has a plate-like shape that extends longitudinally along the movable contact terminal 21. The contact piece 22 has a proximal end section 33 and a front end section 34. The proximal end section 33 of the contact piece 22 is connected to the movable contact terminal 21. The front end section 34 of the contact piece 22 is a free end located on the side opposite the proximal end section 33. Accordingly, the proximal end section 33 of the contact piece 22 is supported on the movable contact terminal 21 in a cantilevered manner.

[0048] As in Fig. As shown in Figure 5, the contact piece 22 comprises a first section 35 and a second section 36. The first section 35 is located on the side of the base 2 of the second section 36. The contact piece 22 includes a gap 37 formed between the first section 35 and the second section 36. The gap 37 separates the first section 35 and the second section 36 from each other. The gap 37 extends longitudinally from the front end section 34 of the contact piece 22 to the proximal end section 33. The gap 37 does not reach the proximal end section 33. Therefore, the first section 35 and the second section 36 are connected to each other at the side of the proximal end of the gap 37. The first movable contact 23 is attached to the first section 35. The second movable contact 24 is attached to the second section 36.

[0049] The first section 35 includes a gap 38. The gap 38 is located between the first movable contact 23 and a section connected to the movable contact terminal 21. The width of the first section 35 is greater than the width of the second section 36. In other words, the second section 36 has a narrower width than the first section 35. A front end of the first section 35 is located on the side of the front end of the movable contact terminal 21, with respect to the front end of the second section 36.

[0050] As in Fig. As shown in Figure 9, the first section 35 comprises a first contact section 412. The first contact section 412 is provided at a front end section of the first section 35. The first contact section 412 is provided on a surface on the side of the fixed contact terminal 25 of the first section 35.

[0051] In particular, the first section 35 comprises a first main part 611 and a projection 621. The first main part 611 extends longitudinally. The first movable contact 23 is attached to the first main part 611. The projection 621 extends laterally from the first main part 611. The projection 621 extends laterally from the first section 35 towards the second section 36. The first contact section 412 is provided on the projection 621.

[0052] The first contact section 412 is located on a section of the first segment 35 on the side of the front end with respect to the first movable contact 23. The first contact section 412 is provided at a corner of the front end of the first segment 35. The first contact section 412 differs laterally from the position of the first movable contact 23.

[0053] The first section 35 comprises a first gap 461. The first gap 461 is arranged around the first movable contact 23. The first gap 461 has a curved shape along the first movable contact 23. The first gap 461 is located on a side opposite the projection 621, with respect to the first movable contact 23.

[0054] The second section 36 comprises a second main part 631 and a tapered section 641. The second main part 631 extends longitudinally. The second movable contact 24 is attached to the second main part 631. The tapered section 641 is located on the side of the front end of the second main part 631. The tapered section 641 is shaped such that it decreases in width towards the front end.

[0055] The second section 36 includes a recess 651 on a section that contains the tapered section 641. The recess 651 is located opposite the projection 621 of the first section 35. The recess 651 has a recessed shape to prevent overlapping with the projection 621. The recess 651 is located opposite the first movable contact 23 in the width direction. The second movable contact 24 is located on a section of the second section 36 on the side of the proximal end, with respect to the recess 651.

[0056] The second section 36 comprises a second contact section 413. The second contact section 413 is located on a surface on the side of the fixed contact terminal 25 of the second section 36. The second contact section 413 is positioned opposite the projection 621 in the width direction. The second contact section 413 is located at a front end of the second section 36. In other words, the second contact section 413 is located at a front end of the tapered section 641. The first section 35 is longer in the longitudinal direction than the second section 36. Accordingly, the first contact section 412 is located on the side of the front end, with respect to the second contact section 413.

[0057] As in Fig. As shown in Figure 8, the first section 35 comprises a third contact section 422. The third contact section 422 is located at the front end of the first section 35. The third contact section 422 is situated on a surface adjacent to the movable contact terminal 21 of the first section 35. At least a portion of the third contact section 422 is located in a position that is closer, in the lateral direction, to the first movable contact 23 than the first contact section 412. The second section 36 comprises a fourth contact section 423. The fourth contact section 423 is located at a front end of the second section 362. The fourth contact section 423 is situated on a surface adjacent to the movable contact terminal 21 of the second section 362. The third contact section 422 is located on the side of the front end of the contact section 22, relative to the fourth contact section 423.

[0058] As in Fig. As shown in Figure 5, the contact piece 22 comprises an expanded section 39. The expanded section 39 has a curved shape that projects in a direction away from the movable contact terminal 21. The expanded section 39 projects from the movable contacts 23 and 24 in the direction of the stationary contacts 26 and 27. The expanded section 39 extends in the width direction of the contact piece 22. The expanded section 39 is located between the proximal end section 33 of the contact piece 22 and the movable contacts 23 and 24 in the longitudinal direction of the contact piece 22.

[0059] As in Fig. As shown in Figure 7, the contact unit 7 comprises several leaf springs 41 to 43. The several leaf springs 41 to 43 are laminated together. In particular, the contact unit 7 comprises the first leaf spring 41, the second leaf spring 42, and the third leaf spring 43. Of the several leaf springs 41 to 43, the first leaf spring 41 is arranged in a position furthest from the movable contact terminal 21. Of the several leaf springs 41 to 43, the second leaf spring 42 is arranged in a position closest to the movable contact terminal 21. The third leaf spring 43 is arranged between the first leaf spring 41 and the second leaf spring 42.

[0060] The number of leaf springs is not limited to three; there may be fewer than three leaf springs. Alternatively, there may be more than three leaf springs.

[0061] The first leaf spring 41 includes connecting bores 411. The second leaf spring 42 includes connecting bores 421. The third leaf spring 43 includes connecting bores 431. The movable contact terminal 21 includes connecting projections 211. The connecting projections 211 are inserted into the connecting bores 411, 421, 431 of the first to third leaf springs 41 to 43 to integrally connect the first to third leaf springs 41 to 43 and the movable contact terminal 21.

[0062] The first leaf spring 41 comprises a first section 351 and a second section 361. The second leaf spring 42 comprises a first section 352 and a second section 362. The third leaf spring 43 comprises a first section 353 and a second section 363. The multiple first sections 351 to 353 are laminated together and form the first section 35 of the contact piece 22 described above. The multiple second sections 361 to 363 are laminated together and form the second section 36 of the contact piece 22 described above.

[0063] The first leaf spring 41, the second leaf spring 42, and the third leaf spring 43 each comprise first contact mounting sections 441, 442, and 443, respectively. The contact mounting sections 441 to 443 are mounting bores formed in the first to third leaf springs 41 to 43 and arranged to overlap each other. The first movable contact 23 is attached to the first contact mounting sections 441 to 443.

[0064] The first leaf spring 41, the second leaf spring 42, and the third leaf spring 43 each include second contact mounting sections 451, 452, and 453, respectively. The contact mounting sections 451 to 453 are mounting bores formed in the first to third leaf springs 41 to 43 and arranged to overlap each other. The second movable contact 24 is attached to the second contact mounting sections 451 to 453.

[0065] The first leaf spring 41 includes the first gap 461 described above. The first gap 461 is formed around the first contact fastening section 441. The first gap 461 has a curved shape along a portion of the first contact fastening section 441. The second leaf spring 42 includes a second gap 462. The second gap 462 is formed around the first contact fastening section 442. The second gap 462 has a curved shape along a portion of the first contact fastening section 442. The third leaf spring 43 includes a third gap 463. The third gap 463 has a shape similar to that of the first gap 461.

[0066] The first leaf spring 41, the second leaf spring 42, and the third leaf spring 43 each encompass columns 371 to 373. Columns 371 to 373 are arranged so that they overlap and form the gap 37 described above. The first leaf spring 41, the second leaf spring 42, and the third leaf spring 43 each encompass columns 381 to 383. Columns 381 to 383 are arranged so that they overlap and form the gap 38 described above.

[0067] The first leaf spring 41, the second leaf spring 42 and the third leaf spring 43 comprise the expanded sections 391 to 393. The expanded sections 391 to 393 are arranged such that they overlap each other and form the expanded section 39 described above.

[0068] The first leaf spring 41 includes the projection 621 described above. The first leaf spring 41 includes the tapered section 641 described above. The first leaf spring 41 includes the first contact section 412 and the second contact section 413, as described above.

[0069] The second leaf spring 42 comprises the third contact section 422 and the fourth contact section 423, as described above. The second leaf spring 42 includes a tapered section 642, which has a shape similar to the shape of the tapered section 641 of the first leaf spring 41. The fourth contact section 423 is located at the front end of the tapered section 642 of the second leaf spring 42.

[0070] The second leaf spring 42 includes a projection 622, which has a shape different from the shape of the projection 621 of the first leaf spring 41. The projection 622 of the second leaf spring 42 projects longitudinally. The projection 622 of the second leaf spring 42 aligns with that of the first leaf spring 41 in a direction perpendicular to a surface of the contact piece 22. The third contact section 422 is located at the front end of the projection 622 of the second leaf spring 42.

[0071] A front end section of the second leaf spring 42 is bent towards the movable contact terminal 21. This configuration stabilizes the contact pressure of the contacts in the set state of relay 1.

[0072] The third leaf spring 43 includes a projection 623, which has a shape similar to the shape of the projection 621 of the first leaf spring 41. The third leaf spring 43 includes a tapered section 643, which has a shape similar to the shape of the tapered section 641 of the first leaf spring 41. A rib 432 is provided on the third leaf spring 43. The rib 432 is provided on an edge of the second section 363 of the third leaf spring 43 and extends longitudinally along the contact piece 22. The rib 432 has a shape curved toward the movable contact connection 21. The rib 432 increases the stiffness of the second section 363.

[0073] The movable contact connection 21 comprises a connecting section 51, a main part 52, a recess 53, and a distal end section 54. The connecting section 51 comprises the proximal end section 32 of the movable contact connection 21. The connecting section 51 includes the connecting projections 211 described above. The proximal end section 33 of the contact piece 22 is connected to the connecting projections 211.

[0074] The main part 52 extends from the connecting section 51 in the longitudinal direction of the contact piece 22. As shown in the Fig. 4, Fig. 5 to Fig. As shown in Figure 6, the main part 52 is opposite the extended section 39 of the contact piece 22. The main part 52 comprises a curved section 521. The side of the proximal end of the main part 52, with respect to the curved section 521, is inclined towards the proximal end section 32 of the contact piece 22.

[0075] The recess 53 coincides with a section of the contact piece 22 on the side of the front end with respect to the first movable contact 23. The recess 53 is located between the main part 52 and the distal end section 54. As shown in Fig. As shown in Figure 2, the connecting element 6 is arranged so that it passes through the recess 53.

[0076] The distal end section 54 is located on the side of the front end of the recess 53. The distal end section 54 includes the front end section 31 of the movable contact connection 21. The distal end section 54 is formed by the movable contact connection 21 in a section projecting towards the outside of the base 2.

[0077] The fixed contacts 26 and 27 comprise the first fixed contact 26 and the second fixed contact 27. The first fixed contact 26 is attached to the fixed contact terminal 25 and is located opposite the first movable contact 23. The second fixed contact 27 is attached to the fixed contact terminal 25 and is located opposite the second movable contact 24. The first fixed contact 26 and the second fixed contact 27 are spaced apart along the longitudinal direction of the contact piece 22, similar to the first movable contact 23 and the second movable contact 24. The first fixed contact 26 is located on the side of the front end of the contact piece 22, relative to the second fixed contact 27.

[0078] The diameter of the first fixed contact 26 is larger than the diameter of the second fixed contact 27. The height of the first fixed contact 26 from the fixed contact terminal 25 is greater than the height of the second fixed contact 27 from the fixed contact terminal 25. As described above, the height of the first movable contact 23 from the contact piece 22 is greater than the height of the second movable contact from the contact piece 22.

[0079] Accordingly, at the moment of contact between the contacts, the first movable contact 23 comes into contact with the first fixed contact 26 before contact occurs between the second movable contact 24 and the second fixed contact 27. At the moment of contact separation, the first movable contact 23 separates from the first fixed contact 26 after the second movable contact 24 has separated from the second fixed contact 27. Therefore, any electrical load generated at the moment of contact or contact separation is primarily applied to the first movable contact 23. Thus, the first movable contact 23 and the first fixed contact 26 each function as normally open / normally closed contacts. Conversely, the second movable contact 24 and the second fixed contact 27 each function as current-carrying contacts.

[0080] The following section describes the connecting element 6 in detail. Fig. Figure 10 is a perspective view of the connecting element 6 and the contact piece 22. Fig. Figure 11 is a side view of the connecting element 6 and the contact piece 22, viewed from the side of the fixed contact terminal 25. Fig. Figure 12 is a perspective view of connecting element 6. Fig. Figure 13 is a view showing the connecting element 6 as viewed from the side of the proximal end of the contact piece 22.

[0081] In the following description, a "longitudinal direction" refers to the longitudinal direction of the contact piece 22 and corresponds to a direction that runs parallel to the direction from the proximal end section 32 to the front end section 31 of the contact piece 22, as described above. The longitudinal direction corresponds to a top-to-bottom direction in Fig. 11. A “lateral direction” refers to the lateral direction of the contact piece 22 and corresponds to a direction in which the first section 35 and the second section 36 are aligned. The lateral direction corresponds to a top-to-bottom direction. Fig. 10 and a direction running from right to left in Fig. 11.

[0082] As in the Fig. 10 and Fig. As shown in Figure 12, the connecting element 6 comprises a main part 71, a connecting part 72, a first projection 73, a second projection 74, and a third projection 75. The main part 71 has the form of a plate that extends from the contact piece 22 to the fixed contact terminal 25. The main part 71 includes the connecting bore 601 described above. The main part 71 is arranged such that it passes through the recess 53 of the movable contact terminal 21.

[0083] In the following description, a direction from the contact piece 22 towards the fixed contact terminal 25 is referred to as the "contact direction". A direction opposite to the contact direction is referred to as the "separation direction".

[0084] The connecting part 72 projects from the main part 71 in the direction of contact. The connecting part 72 extends from the main part 71 in the direction of contact. The first projection 73 projects from the connecting part 72 in the width direction. In particular, the first projection 73 projects from the connecting part 72 in a direction extending from the second section 36 to the first section 35.

[0085] The second protrusion 74 and the third protrusion 75 point forward in the same direction and extend parallel to each other. The first protrusion 73 points forward in a direction perpendicular to the direction in which the second protrusion 74 points forward.

[0086] The second projection 74 extends longitudinally from the connecting part 72. Specifically, the second projection 74 extends from the connecting part 72 in a direction extending towards the proximal end of the contact piece 22. The third projection 75 extends longitudinally from the connecting part 72. The third projection 75 extends from the connecting part 72 in a direction extending towards the proximal end of the contact piece 22. The third projection 75 is located in the separation direction from the second projection 74.

[0087] The connecting element 6 comprises a first recess 76 and a second recess 77. The first recess 76 is formed by the connecting part 72, the first projection 73, and one end of the main part 71 in the contact direction. The first recess 76 is shaped such that it is recessed in the width direction of the contact piece 22. The first recess 76 is recessed in a direction extending from the first section 35 to the second section 36. As shown in Fig. As shown in Figure 10, the front end of the first section 35 is arranged within the first recess 76. The first contact section 412 and the third contact section 422 are arranged within the first recess 76.

[0088] The second recess 77 is formed by the connecting part 72, the second projection 74, and the third projection 75. The second recess 77 is shaped such that it is recessed in the longitudinal direction of the contact piece 22. The second recess 77 is recessed in a direction extending from the proximal end to the front end of the contact piece 22. The front end of the second section 36 is located within the second recess 77. The second contact section 413 and the fourth contact section 423 are located within the second recess 77.

[0089] As in Fig. As shown in Figure 11, the connecting element 6 is arranged longitudinally between a front end 341 of the first section 35 and a front end 342 of the second section 36. The connecting element 6 is located between the projection 621 of the first section 35 and a lateral edge 343 of the second section 36 in the lateral direction. The connecting element 6 is positioned within a region the width of the contact piece 22.

[0090] As in Fig. As shown in Figure 12, the connecting element 6 comprises a first pressure-exerting section 81, a second pressure-exerting section 82, a third pressure-exerting section 83, and a fourth pressure-exerting section 84. The first pressure-exerting section 81 is provided on the first projection 73. The first pressure-exerting section 81 forms part of the first recess 76 and extends in the width direction of the contact piece 22. The first pressure-exerting section 81 is positioned opposite the first contact section 412. The first pressure-exerting section 81 presses the first contact section 412 in the separation direction in accordance with the movement of the connecting element 6 in the separation direction.

[0091] The second pressure-exerting section 82 is provided on the second projection 74. The second pressure-exerting section 82 forms part of the second recess 77 and extends longitudinally along the contact piece 22. In particular, the second pressure-exerting section 82 extends longitudinally towards the proximal end of the contact piece 22. The second pressure-exerting section 82 is positioned opposite the second contact section 413. The second pressure-exerting section 82 presses the second contact section 413 in the separation direction, in accordance with the movement of the connecting element 6 in the separation direction.

[0092] The third pressure-exerting section 83 is provided at one end of the main part 71 in the contact direction. The third pressure-exerting section 83 forms part of the first recess 76 and extends in the width direction of the contact piece 22. The third pressure-exerting section 83 is positioned opposite the third contact section 422. The third pressure-exerting section 83 presses the third contact section 422 in the contact direction, in accordance with the movement of the connecting element 6 in the contact direction.

[0093] The fourth pressure-exerting section 84 is provided on the third projection 75. The fourth pressure-exerting section 84 forms part of the second recess 77 and extends longitudinally along the contact piece 22. In particular, the fourth pressure-exerting section 84 extends longitudinally towards the proximal end of the contact piece 22. The fourth pressure-exerting section 84 is positioned opposite the fourth contact section 423. The fourth pressure-exerting section 84 presses the fourth contact section 423 in the contact direction, in accordance with the movement of the connecting element 6 in the contact direction.

[0094] As in Fig. As shown in Figure 13, the length L1 of the first pressure-exerting section 81 in the width direction differs from the length L3 of the third pressure-exerting section 83 in the width direction. Accordingly, the first pressure-exerting section 81 and the third pressure-exerting section 83 exert pressure on different positions of the first section 35 in the width direction. In particular, the first pressure-exerting section 81 is shorter in the width direction than the third pressure-exerting section 83. The length of the second pressure-exerting section 82 in the longitudinal direction is equal to the length of the fourth pressure-exerting section 84 in the longitudinal direction.

[0095] As in Fig. As shown in Figure 13, the first pressure-exerting section 81 is arranged in a line with the second pressure-exerting section 82 in the width direction of the contact piece 22. Accordingly, when the connecting element 6 moves in the separation direction, the second pressure-exerting section 82 comes into contact with the second contact section 413 at essentially the same time as contact occurs between the first pressure-exerting section 81 and the first contact section 412.

[0096] The third pressure-exerting section 83 is arranged in a line with the fourth pressure-exerting section 84 in the width direction of the contact piece 22. Accordingly, when the connecting element 6 moves in the contact direction, the fourth pressure-exerting section 84 comes into contact with the fourth contact section 423 at essentially the same time as contact occurs between the third pressure-exerting section 83 and the third contact section 422.

[0097] The Fig. 14 and Fig. Figure 15 shows views in which the contact piece 22 and the connecting element 6 are depicted at the moment of switching from the set state to the reset state of relay 1. When relay 1 switches from the set state to the reset state, the connecting element 6 moves in the separation direction (to the right). Fig. 14 and Fig. 15). This brings the first pressure-exerting section 81 into contact with the first contact section 412 and pushes the first contact section 412 in the separation direction, as shown in Fig. Figure 14 shows that the second pressure-exerting section 82 also comes into contact with the second contact section 413 and presses the second contact section 413 in the separation direction, as shown in Figure 14. Fig. Figure 15 illustrates this. As a result, the movable contacts 23 and 24 move away from the fixed contacts 26 and 27, respectively, and are separated from them. Consequently, the set state of relay 1 is switched to the reset state.

[0098] The Fig. 16 and Fig. Figure 17 shows views of contact piece 22 and connecting element 6 at the moment of switching from the reset state to the set state of relay 1. When relay 1 switches from the reset state to the set state, connecting element 6 moves in the contact direction (to the left). Fig. 16 and Fig. 17). This brings the third pressure-exerting section 83 into contact with the third contact section 422 and pushes the third contact section 422 in the contact direction, as shown in Fig. Figure 16 shows that the fourth pressure-exerting section 84 also comes into contact with the fourth contact section 423 and presses the fourth contact section 423 in the contact direction, as shown in Figure 16. Fig. Figure 17 shows this. As a result, the movable contacts 23 and 24 move towards the fixed contacts 26 and 27 respectively and come into contact with the fixed contacts 26 and 27. Consequently, the reset state of relay 1 is switched to the set state.

[0099] In the embodiment described above, the first pressure-exerting section 81 and the second pressure-exerting section 82 extend in different directions. This allows the positions or sizes of the first contact section 412 and the second contact section 413 to be easily adjusted by freely defining the dimensions of the first pressure-exerting section 81 and the second pressure-exerting section 82. Furthermore, the strength of the separation force or the timing of the separation can each be easily adjusted for the first movable contact 23 and the second movable contact 23 by freely adjusting the positions of the first pressure-exerting section 81 and the second pressure-exerting section 82. Accordingly, the contact parameters can be easily adjusted.

[0100] For example, the distance between the contact piece 22 and the first pressure-exerting section 81 can be increased by orienting the first pressure-exerting section 81 in the contact direction towards a Fig. The first pressure-exerting section 81 is moved to position 81a as shown in Figure 18. This allows the movement speed of the first pressure-exerting section 81 at the moment of contact between the first pressure-exerting section 81 and the contact piece 22 to be increased, thus increasing the separating force of the first movable contact 23. Similarly, the separating force of the second movable contact 24 can be increased by moving the second pressure-exerting section 82 towards position 82a in the contact direction. Conversely, the separating force of the first movable contact 23 can be decreased by moving the first pressure-exerting section 81 towards position 81b in the separation direction. Likewise, the separating force of the second movable contact 24 can be decreased by moving the second pressure-exerting section 82 towards position 82b in the separation direction.

[0101] Furthermore, the third pressure-exerting section 83 and the fourth pressure-exerting section 84 extend in different directions. This allows the positions or sizes of the third contact section 422 and the fourth contact section 423 to be easily adjusted by freely defining the dimensions of the first pressure-exerting section 81 and the second pressure-exerting section 82. In addition, the contact force or contact timing can each be easily adjusted for the first movable contact 23 and the second movable contact 24 by freely adjusting the positions of the first pressure-exerting section 81 and the second pressure-exerting section 82. Accordingly, the contact parameters can be easily adjusted.

[0102] For example, the pressure exerted on the contact piece 22 by the third pressure-exerting section 83 can be increased by orienting the third pressure-exerting section 83 in the contact direction towards a Fig. The contact force of the first movable contact 23 can be increased by moving the fourth pressure-exerting section 84 towards position 83a as shown in Figure 19. Similarly, the contact force of the second movable contact 24 can be increased by moving the fourth pressure-exerting section 84 towards position 84a in the contact direction. Conversely, the contact force of the first movable contact 23 can be decreased by moving the third pressure-exerting section 83 towards position 83b in the separation direction. Likewise, the contact force of the second movable contact 24 can be decreased by moving the fourth pressure-exerting section 84 towards position 84b in the separation direction.

[0103] The first pressure-exerting section 81, the second pressure-exerting section 82, and the fourth pressure-exerting section 84 are located on the first projection 73, the second projection 74, and the third projection 75, respectively. This allows the lengths of the first pressure-exerting section 81, the second pressure-exerting section 82, and the fourth pressure-exerting section 84 to be adjusted by changing the lengths of the first projection 73, the second projection 74, and the third projection 75. Specifically, the positions and sizes of the first contact section 412, the second contact section 413, and the fourth contact section 423 can be adjusted by changing the lengths of the first projection 73, the second projection 74, and the third projection 75. Accordingly, the contact parameters can be easily adjusted.

[0104] The first pressure-exerting section 81 is shorter than the third pressure-exerting section 83. This ensures a longer distance between the first contact section 412 and the first movable contact 23. Consequently, the separation force can be increased. Furthermore, the third contact section 422 can be positioned close to the first movable contact 23. This improves the contact stability between the first movable contact 23 and the first fixed contact 26.

[0105] The contact piece 22 is arranged in the first recess 76 and the second recess 77. Accordingly, the connecting element 6 can be attached and detached by opening the base 2 while the contact piece assembly 7 and the base 2 are connected. This configuration facilitates the attachment and detachment of the connecting element 6 to and from the relay 1 and increases the ease of assembly of the relay 1 compared to a configuration in which the connecting element 6 has a bore through which the contact piece 22 is inserted.

[0106] The connecting element 6 is arranged within the width of the contact piece 22. The connecting element 6 is also located longitudinally between the front end 341 of the first section 35 and the front end 342 of the second section 36. Accordingly, the size of the relay 1 can be reduced.

[0107] The present invention is not limited to the embodiment described herein as a specific embodiment of the present invention. Various modifications can be made without departing from the scope of protection of the invention.

[0108] The configuration of the contact unit 7 can differ from the configuration described in the embodiment above. For example, the shape of the contact piece 22 can be changed. The shapes or positions of the first to fourth contact sections 412, 413, 422, and 423 can be modified. The widths of the first section 35 and the second section 36 can be adjusted. Alternatively, the width of the second section 36 can be greater than the width of the first section 35.

[0109] The shapes or positions of the movable contacts 23 and 24 can be changed. For example, the first movable contact 23 and the second movable contact 24 can be aligned in the width direction. Alternatively, the second movable contact 24 can be positioned on the side of the front end of the first movable contact 23. The second movable contact 24 can be a normally open / normally closed contact, while the first movable contact 23 can be a movable current contact. In other words, a normally open / normally closed contact can be attached to the second section 36, while a movable current contact can be attached to the first section 35.

[0110] The configuration of the fixed contact unit 8 may differ from the configuration described in the embodiment above. For example, the shapes or positions of the fixed contacts 26 and 27 may be modified in accordance with the preceding modification of the contact unit 7.

[0111] The shape of connecting element 6 can be modified. For example, shows Fig. 20 a connecting element 6 according to a first modified example. As in Fig. As shown in Figure 20, the length of the first pressure-exerting section 81 can be equal to the length of the third pressure-exerting section 83. For example, Figure 20 shows that the length of the first pressure-exerting section 81 can be equal to the length of the third pressure-exerting section 83. Fig. 21 a connecting element 6 according to a second modified example. As in Fig. As shown in Figure 21, the length of the second pressure-exerting section 82 may differ from the length of the fourth pressure-exerting section 84.

[0112] The position of the first pressure-exerting section 81 can differ from the position of the second pressure-exerting section 82 in the contact direction. Alternatively, the position of the first pressure-exerting section 81 can differ from the position of the second pressure-exerting section 82 in the separation direction. The position of the third pressure-exerting section 83 can differ from the position of the fourth pressure-exerting section 84 in the contact direction. Alternatively, the position of the third pressure-exerting section 83 can differ from the position of the fourth pressure-exerting section 84 in the separation direction. INDUSTRIAL APPLICABILITY

[0113] According to the present invention, contact parameters can be easily set for each contact from the multitude of movable contacts. DESCRIPTION OF REFERENCE NUMBERS 21 movable contact connection 22 contact piece 35 first section 36 second section 23 first moving contact 24 second movable contact 25 fixed contact connection 26 first confirmed contact 27 second fixed contact 6 Connecting element 81 first pressure-exerting section 82 second pressure-exerting section 83 third pressure-exerting section 84 fourth pressure-exerting section 412 first contact section 413 second contact section 422 third contact section 423 fourth contact section 72 Connecting part 73 first lead 74 second lead 75 third lead 76 first recess 77 second recess

Claims

[1] Relays including: a movable contact terminal (21); a contact piece (22) which is attached to the movable contact terminal (21) and comprises a first section (35) and a second section (36) which extend in a longitudinal direction and are separated from each other; a first movable contact (23) which is attached to the first section (35); a second movable contact (24) which is attached to the second section (36); a fixed contact terminal (25) which is arranged in a position opposite the contact piece (22); a first fixed contact (26) which is attached to the fixed contact terminal (25) and is arranged in a position opposite the first movable contact (23); a second fixed contact (27) which is attached to the fixed contact terminal (25) and arranged in a position opposite the second movable contact (24); and a connecting element (6) that is able to exert pressure on the contact piece (22), wherein the connecting element (6) comprises: a first pressure-exerting section (81) configured to exert pressure on the first section (35) and extending in a width direction of the contact piece (22), and a second pressure-exerting section (82) configured to exert pressure on the second section (36) and extending in the longitudinal direction. [2] Relay according to claim 1, wherein the connecting element (6) comprises: a third pressure-exerting section (83) configured to exert pressure on the first section (35) and extending in the width direction of the contact piece (22), and a fourth pressure-exerting section (84) configured to exert pressure on the second section (36) and extending longitudinally, wherein the first pressure-exerting section (81) pushes the first section (35) in a direction away from the fixed contact terminal (25), the second pressure-exerting section (82) pushes the second section (36) in the direction away from the fixed contact terminal (25), the third pressure-exerting section (83) presses the first section (35) towards the fixed contact terminal (25), and the fourth pressure-exerting section (84) pushes the second section (36) towards the fixed contact terminal (25). [3] Relay according to claim 2, wherein the length of the first pressure-exerting section (81) in the width direction differs from the length of the third pressure-exerting section (83) in the width direction. [4] Relay according to claim 3, wherein the first pressure-exerting section (81) is shorter in the width direction than the third pressure-exerting section (83). [5] Relay according to any one of claims 2 to 4, wherein the first section (35) comprises a first contact section (412) on which pressure is exerted by the first pressure-exerting section (81), and the first contact section (412) is arranged at a position at a distance from the first movable contact (23) in the lateral direction. [6] Relay according to claim 5, wherein the first section (35) comprises a third contact section (422) on which pressure is exerted by the third pressure-exerting section (83), and at least part of the third contact section (422) is positioned closer in the lateral direction to the first movable contact (23) than the first contact section (412). [7] Relay according to claim 5 or 6, wherein the length of the second pressure-exerting section (82) in the longitudinal direction differs from the length of the fourth pressure-exerting section (84) in the longitudinal direction. [8] Relay according to any one of claims 5 to 7, wherein the second section (36) comprises a second contact section (413) on which pressure is exerted by the second pressure-exerting section (82), and the first contact section (412), in relation to the second contact section (413), is arranged on one side of the front end of the contact piece (22). [9] Relay according to claim 6, wherein the second section (36) comprises a fourth contact section (423) on which pressure is exerted by the fourth pressure-exerting section (84), and the third contact section (422), in relation to the fourth contact section (423), is positioned on one side of the front end of the contact piece (22). [10] Relay according to any one of claims 2 to 9, wherein the connecting element (6) further comprises: a connecting part (72) extending from the third pressure-exerting section (83) in a direction towards the fixed contact terminal (25) of the contact piece (22), and a first projection (73) which extends in the width direction from the connecting part (72), wherein the first pressure-exerting section (81) is provided on the first projection (73). [11] Relay according to claim 10, wherein the connecting element (6) comprises a first recess (76) formed by the connecting part (72), the first projection and the third pressure-exerting section (83), and a part of the first section (35) is arranged within the first recess (76). [12] Relay according to claim 1 or 11, wherein the connecting element (6) further comprises a second projection (74) that extends longitudinally from the connecting part (72), and the second pressure-exerting section (82) is provided on the second projection (74). [13] Relay according to claim 12, wherein the connecting element (6) further comprises a third projection (75) that extends longitudinally from the connecting part (72), and the fourth pressure-exerting section (84) is provided on the third projection (75). [14] Relay according to claim 13, wherein the connecting element (6) comprises a second recess (77) formed by the connecting part (72), the second projection (74) and the third projection (75), wherein a part of the second section (36) is arranged within the second recess (77). [15] Relay according to any one of claims 1 to 14, wherein a front end of the first section (35) is arranged on the side of the front end of the contact piece (22), in relation to a front end of the second section (36), and at least part of the connecting element (6) is arranged longitudinally between the front end of the first section (35) and the front end of the second section (36). [16] Relay according to any one of claims 1 to 15, wherein the connecting element (6) is arranged in a region the width of the contact piece (22). [17] Relay according to any one of claims 1 to 16, wherein the width of the second segment (36) is smaller than the width of the first segment (35), and the second section (36) includes a rib which is provided at an edge the width of the second section (36) and extends longitudinally.

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