Electromagnetic relay

Abstract

To provide an electromagnetic relay from which a stable shielding effect can be obtained.SOLUTION: An electromagnetic relay includes a first stationary terminal, a movable contact piece, a movable member, and a shield wall. The first stationary terminal includes a first stationary contact. The movable contact piece includes a first movable contact facing the first stationary contact. The movable member holds the movable contact piece. The movable member is movable in movement directions including a first direction directed from the first movable contact to the first stationary contact and a second direction directed from the first stationary contact to the first movable contact. The shield wall is formed of insulating material. The shield wall is arranged in the second direction with respect to the first movable contact. The shield wall is fixed to the movable member, extends in a longitudinal direction of the movable contact piece from the movable member toward the first movable contact, and extends in the movement directions of the movable member.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an electromagnetic relay. [Background technology]

[0002] The electromagnetic relay disclosed in Patent Document 1 includes a shielding member that shields an arc generated between a movable contact and a fixed contact. The shielding member includes a shielding wall. The shielding wall prevents the arc from circulating around the movable contact piece. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-80256 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the electromagnetic relay of Patent Document 1, the positional relationship between the movable contact piece and the blocking wall changes as the movable contact piece moves when the contacts are opened or closed. This may cause the positional relationship between the movable contact piece and the blocking member to become unstable, and may result in an inability to obtain a stable blocking effect.

[0005] An object of the present invention is to provide an electromagnetic relay that can provide a stable interrupting effect. [Means for solving the problem]

[0006] An electromagnetic relay according to one aspect of the present invention includes a first fixed terminal, a movable contact piece, a movable member, and a first interrupting wall. The first fixed terminal includes a first fixed contact. The movable contact piece includes a first movable contact facing the first fixed contact. The movable member holds the movable contact piece. The movable member is movable in a moving direction including a first direction from the first movable contact to the first fixed contact and a second direction from the first fixed contact to the first movable contact. The first interrupting wall is formed of an insulating material. The first interrupting wall is disposed in the second direction relative to the first movable contact. The first interrupting wall is fixed to the movable member and extends from the movable member toward the first movable contact in the longitudinal direction of the movable contact piece and in the moving direction of the movable member.

[0007] In this electromagnetic relay, the first interrupting wall is disposed in the second direction relative to the first movable contact. That is, the first interrupting wall is disposed on the side of the movable contact piece opposite to the side on which the movable contact is disposed. This allows the first interrupting wall to prevent an arc generated between the first fixed contact and the first movable contact from circulating around the movable contact piece. In addition, the first interrupting wall is fixed to the movable member that holds the movable contact piece. This stabilizes the positional relationship between the movable contact piece and the first interrupting wall, and therefore the first interrupting wall can provide a stable interrupting effect.

[0008] The movable contact piece may be fixed to the movable member, in which case the positional relationship between the movable contact piece and the first blocking wall is more stable.

[0009] The first blocking wall may extend to the first movable contact in the longitudinal direction of the movable contact piece, in which case a more stable blocking effect can be obtained by the first blocking wall.

[0010] The first blocking wall may extend in the longitudinal direction of the movable contact piece to one end of the movable contact piece in the longitudinal direction, in which case a more stable blocking effect can be obtained by the first blocking wall.

[0011] The first interrupting wall may include an inclined portion against which an arc generated between the first fixed contact and the first movable contact strikes. The inclined portion may be inclined with respect to the moving direction of the movable contact piece when viewed from the longitudinal direction of the movable contact piece. In this case, the contact area between the first interrupting wall and the arc becomes larger, thereby improving the arc extinguishing performance.

[0012] The first interrupting wall may be in an inverted triangular shape with a width increasing in the second direction when viewed from the longitudinal direction of the movable contact piece. In this case as well, the contact area between the first interrupting wall and the arc is increased, thereby improving the arc-extinguishing performance.

[0013] The first interrupting wall may include an extension that is contacted by an arc generated between the first fixed contact and the first movable contact. The extension may extend in a direction perpendicular to the direction of movement of the movable member. In this case, the contact area between the first interrupting wall and the arc is increased, thereby improving the arc-extinguishing performance.

[0014] The first interrupting wall may be T-shaped when viewed from the longitudinal direction of the movable contact piece. In this case as well, the contact area between the first interrupting wall and the arc is increased, thereby improving the arc-extinguishing performance.

[0015] The first interrupter wall may include at least one through hole penetrating the movable contact piece in the short-side direction, which can effectively prevent high-temperature gas generated by the arc from accumulating.

[0016] At least one of the through holes may be in the form of a slit, which also effectively prevents high-temperature gas generated by the arc from stagnation.

[0017] The first blocking wall may be formed integrally with the movable member, which can reduce the number of parts.

[0018] The first blocking wall may be a separate body from the movable member, which increases the degree of freedom in designing the first blocking wall.

[0019] The first interrupting wall may be offset in the short direction of the movable contact piece relative to the first movable contact when viewed in the long direction of the movable contact piece. In this case, when the electromagnetic relay has polarity, the arc can be largely extended with one polarity.

[0020] The electromagnetic relay may further include a second fixed terminal including a second fixed contact, and a second blocking wall formed of an insulating material and fixed to the movable member. The movable contact piece may further include a second movable contact facing the second fixed contact. The second blocking wall may extend in the longitudinal direction from the movable member toward the second movable contact and in the moving direction of the movable member. In this case, the second blocking wall can prevent an arc generated between the second fixed contact and the second movable contact from circulating around the movable contact piece. Effect of the Invention

[0021] According to the present invention, it is possible to provide an electromagnetic relay that can provide a stable interrupting effect. [Brief description of the drawings]

[0022] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] 2 is a cross-sectional view of the contact device taken along a plane perpendicular to the front-rear direction. FIG. [Figure 4] 2 is a partial cross-sectional view of the electromagnetic relay taken along a plane perpendicular to the up-down direction. FIG. [Diagram 5] 11 is a cross-sectional view of a contact device according to a modified example taken along a plane perpendicular to the front-rear direction. FIG. [Figure 6] FIG. 11 is a side view of an electromagnetic relay according to a modified example. [Figure 7] FIG. 11 is a side view of an electromagnetic relay according to a modified example. [Figure 8] FIG. 11 is a side view of an electromagnetic relay according to a modified example. [Figure 9] FIG. 11 is a side view of an electromagnetic relay according to a modified example. [Figure 10] FIG. 13 is a schematic diagram of an electromagnetic relay according to a modified example. [Figure 11] FIG. 13 is a schematic diagram of an electromagnetic relay according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, an embodiment of an electromagnetic relay according to one aspect of the present invention will be described with reference to the drawings. In each drawing, the X1 direction is the left direction, the X2 direction is the right direction, the Y1 direction is the forward direction, the Y2 direction is the backward direction, the Z2 direction is the upward direction, and the Z1 direction is the downward direction. In this embodiment, the Z1 direction is an example of the first direction, and the Z2 direction is an example of the second direction. Note that these directions are defined for the convenience of explanation, and do not limit the arrangement direction of the electromagnetic relay.

[0024] As shown in Figures 1 and 2, the electromagnetic relay 1 includes a base 2, a contact device 3, and a drive device 4. The base 2 is formed of an insulating material such as resin. The base 2 supports the contact device 3 and the drive device 4. The contact device 3 and the drive device 4 are covered by a case 20 (see Figure 4) attached to the base 2. Note that the case 20 is omitted in Figures 1 to 3.

[0025] 3 is a cross-sectional view of the contact device 3 taken along a plane perpendicular to the front-rear direction. The base 2 includes a bottom portion 21 and terminal support portions 22a and 22b. The bottom portion 21 has a rectangular shape when viewed from the top-bottom direction.

[0026] The terminal support portions 22a and 22b are formed to protrude upward from the bottom portion 21. The terminal support portion 22a is arranged apart from the terminal support portion 22b in the left-right direction. The upper surfaces of the terminal support portions 22a and 22b include flat surfaces that are perpendicular to the up-down direction.

[0027] The contact device 3 includes a first fixed terminal 6, a second fixed terminal 7, a movable contact piece 8, a movable member 9, and a contact spring 10. The first fixed terminal 6, the second fixed terminal 7, and the movable contact piece 8 are plate-shaped terminals and are made of a conductive material such as copper.

[0028] The first fixed terminal 6 and the second fixed terminal 7 have a U-shaped cross section and are bent into a U shape when viewed from the left-right direction. The first fixed terminal 6 and the second fixed terminal 7 are supported by the base 2. The first fixed terminal 6 and the second fixed terminal 7 are fixed to the base 2 by, for example, press-fitting.

[0029] The first fixed terminal 6 includes a first fixed contact 6a, a contact support portion 6b, a first extending portion 6c, a second extending portion 6d, and a pair of external connection portions 6e. The first fixed contact 6a is disposed on the contact support portion 6b. The first fixed contact 6a is fixed to the first fixed terminal 6 by crimping.

[0030] The contact support portion 6b is supported on the upper surface of the terminal support portion 22a. The contact support portion 6b extends in a direction perpendicular to the up-down direction. The contact support portion 6b supports the first fixed contact 6a. The first fixed contact 6a is fixed to the contact support portion 6b by crimping. The first fixed contact 6a may be integral with the first fixed terminal 6.

[0031] The first extension 6c and the second extension 6d are press-fitted and fixed to the bottom 21 of the base 2. The first extension 6c is connected to the contact support 6b and protrudes outward from the base 2. The first extension 6c is bent downward from the front end of the contact support 6b and protrudes downward from the bottom 21 of the base 2. The first extension 6c is in contact with the front surface of the terminal support 22a. The second extension 6d faces the first extension 6c in the front-rear direction. The second extension 6d is connected to the contact support 6b and protrudes outward from the base 2. The second extension 6d is bent downward from the rear end of the contact support 6b and protrudes downward from the bottom 21 of the base 2. The second extension 6d is in contact with the rear surface of the terminal support 22a. The pair of external connection parts 6e are disposed at the lower end of the first extending part 6c and the lower end of the second extending part 6d, and are electrically connected to an external device (not shown).

[0032] The second fixed terminal 7 is disposed apart from the first fixed terminal 6 in the left-right direction. The second fixed terminal 7 has a similar shape to the first fixed terminal 6. The second fixed terminal 7 includes a second fixed contact 7a, a contact support portion 7b, a first extension portion 7c, a second extension portion 7d, and a pair of external connection portions 7e. Each configuration of the second fixed terminal 7 is similar to each configuration of the first fixed terminal 6, and therefore description thereof will be omitted.

[0033] The movable contact piece 8 extends in the left-right direction. The longitudinal direction of the movable contact piece 8 coincides with the left-right direction. The lateral direction of the movable contact piece 8 coincides with the front-rear direction. The movable contact piece 8 is disposed above the first fixed terminal 6 and the second fixed terminal 7.

[0034] The movable contact piece 8 includes a first movable contact 8a and a second movable contact 8b. The first movable contact 8a and the second movable contact 8b are arranged on the lower surface of the movable contact piece 8. The first movable contact 8a faces the first fixed contact 6a in the vertical direction and can come into contact with the first fixed contact 6a. The second movable contact 8b faces the second fixed contact 7a in the vertical direction and can come into contact with the second fixed contact 7a. A space for extending the arc is provided above the first movable contact 8a and the second fixed contact 7a. In this embodiment, the first movable contact 8a and the second movable contact 8b are fixed to the movable contact piece 8 by crimping, but the first movable contact 8a and the second movable contact 8b may be integral with the movable contact piece 8.

[0035] The movable contact piece 8 is movable in a movement direction including a Z1 direction from the first movable contact 8a to the first fixed contact 6a and a Z2 direction from the first fixed contact 6a to the first movable contact 8a. In this embodiment, the movable contact piece 8 is movable in the up-down direction. The movable contact piece 8 is held by a movable member 9. The movable contact piece 8 penetrates the movable member 9 in the left-right direction. The movable contact piece 8 moves in response to the movement of the movable member 9. The movable contact piece 8 is movable relative to the movable member 9 in the up-down direction.

[0036] The movable member 9 is formed of an insulating material such as resin. The movable member 9 holds the movable contact piece 8. The movable member 9 extends in the up-down direction. The left and right side surfaces of the movable member 9 extend in a direction perpendicular to the left-right direction, and the front and rear side surfaces extend in a direction perpendicular to the front-rear direction. The movable member 9 is disposed in the center of the movable contact piece 8 in the left-right direction. As shown in FIG. 3, the movable member 9 includes an insertion hole 9a and a support portion 9b. The insertion hole 9a is a hole for inserting the movable contact piece 8, and penetrates the movable member 9 in the left-right direction. The support portion 9b supports the lower surface of the movable contact piece 8.

[0037] The upper end of the movable member 9 is connected to the driving device 4. The movable member 9 is movable in movement directions including the Z1 direction and the Z2 direction. In this embodiment, the movable member 9 is movable in the up and down direction.

[0038] The contact spring 10 is a coil spring, and is disposed on the upper part of the movable contact piece 8. The contact spring 10 biases the movable contact piece 8 in the contact direction (here, downward). The contact spring 10 is housed inside the movable member 9 in a state compressed in the vertical direction. The contact spring 10 presses the movable contact piece 8 towards the support portion 9b of the movable member 9.

[0039] The driving device 4 is disposed behind the contact device 3. The driving device 4 moves the movable contact piece 8 in the vertical direction via a movable member 9. The driving device 4 includes a coil 4a, a spool 4b, a fixed iron core 4c, a yoke 4d, a movable iron piece 4e, a hinge spring 4f, and a return spring 4g.

[0040] The coil 4a is wound around the outer periphery of the spool 4b. The spool 4b extends in the vertical direction. The fixed core 4c is disposed on the inner periphery of the spool 4b. The yoke 4d is disposed so as to cover the rear of the coil 4a. The yoke 4d is substantially L-shaped when viewed from the left-right direction. The yoke 4d is connected to the lower end of the fixed core 4c.

[0041] The movable iron piece 4e is rotatably supported by the yoke 4d via the hinge spring 4f. The movable iron piece 4e rotates with the upper end of the yoke 4d as a fulcrum. The right end of the movable iron piece 4e is disposed on the upper part of the movable member 9. The movable iron piece 4e is disposed above the fixed iron core 4c. The hinge spring 4f biases the movable iron piece 4e in a direction away from the fixed iron core 4c. The return spring 4g is accommodated in the spring accommodating portion 31c and the recess 25 of the base 2. The return spring 4g biases the movable member 9 in the separation direction (here, upward).

[0042] As shown in FIGS. 3 and 4, the electromagnetic relay 1 further includes a first blocking wall 31, a second blocking wall 32, a first magnet 33, a second magnet 34, and a yoke 35.

[0043] The first blocking wall 31 is made of an insulating material such as resin. The first blocking wall 31 is fixed to the movable member 9. In this embodiment, the first blocking wall 31 is made of resin and is integrally formed with the movable member 9. The first blocking wall 31 is disposed above the first movable contact 8a. The first blocking wall 31 is disposed on the opposite side (here, the upper surface side) of the movable contact piece 8 to the side on which the first movable contact 8a is disposed. The first blocking wall 31 is spaced apart from the movable contact piece 8 in the up-down direction.

[0044] The first blocking wall 31 extends from the left side surface of the movable member 9 toward the first movable contact 8a in the longitudinal direction of the movable contact piece 8 and in the moving direction of the movable member 9. The first blocking wall 31 extends leftward from the left side surface of the movable member 9. The first blocking wall 31 is rectangular and extends in a direction perpendicular to the front-rear direction.

[0045] As shown in Figures 2 and 3, the first blocking wall 31 overlaps with the movable contact piece 8 in the up-down direction. In this embodiment, the first blocking wall 31 overlaps with the first movable contact 8a in the up-down direction. The first blocking wall 31 is located directly above the first movable contact 8a when viewed from the left-right direction. The first blocking wall 31 extends to the first movable contact 8a in the left-right direction. The first blocking wall 31 extends to the left end of the movable contact piece 8 in the left-right direction. The dimension of the first blocking wall 31 in the front-rear direction is smaller than the dimension of the movable contact piece 8 in the front-rear direction. The first blocking wall 31 may extend further in the left-right direction than the left end of the movable contact piece 8.

[0046] The second blocking wall 32 has a symmetrical shape to the first blocking wall 31 and has the same configuration as the first blocking wall 31. The second blocking wall 32 extends from the right side surface of the movable member 9 toward the second movable contact 8b in the longitudinal direction of the movable contact piece 8 and also extends in the moving direction of the movable member 9. The second blocking wall 32 overlaps with the second movable contact 8b in the up-down direction.

[0047] The first magnet 33 and the second magnet 34 are permanent magnets. The first magnet 33 and the second magnet 34 are arranged so that magnetic flux flows in the left-right direction between the first fixed contact 6a and the first movable contact 8a, and between the second fixed contact 7a and the second movable contact 8b. The first magnet 33 and the second magnet 34 are arranged so that the opposite poles face each other in the left-right direction. The first magnet 33 and the second magnet 34 are attached to the outer circumferential surface of the case 20. The yoke 35 is arranged so as to cover the first magnet 33 and the second magnet 34 from the outside.

[0048] Next, the operation of the electromagnetic relay 1 will be described. In the open state where no voltage is applied to the coil 4a, the movable member 9 is pressed in the opening direction by the elastic forces of the hinge spring 4f and the return spring 4g. Therefore, the first movable contact 8a is separated from the first fixed contact 6a, and the second movable contact 8b is separated from the second fixed contact 7a.

[0049] When a voltage is applied to the coil 4a and the driving device 4 is excited, the movable iron piece 4e is attracted to the fixed iron core 4c and rotates, and the movable iron piece 4e presses the movable member 9 in the contact direction. As a result, the movable member 9 moves in the contact direction against the elastic forces of the hinge spring 4f and the return spring 4g. As the movable member 9 moves in the contact direction, the contact spring 10 moves in the contact direction. As a result, the movable contact piece 8 moves in the contact direction, and the first movable contact 8a contacts the first fixed contact 6a and the second movable contact 8b contacts the second fixed contact 7a. When the application of the voltage to the coil 4a is stopped, the movable member 9 moves in the opening direction due to the elastic forces of the hinge spring 4f and the return spring 4g.

[0050] In this electromagnetic relay 1, the first blocking wall 31 is disposed on the side opposite to the side on which the first movable contact 8a of the movable contact piece 8 is disposed. This allows the first blocking wall 31 to prevent an arc generated between the first fixed contact 6a and the first movable contact 8a from circulating around the movable contact piece 8.

[0051] Specifically, as shown by the two-dot chain line in Fig. 2, for example, when a current flows from the first movable contact 8a to the first fixed contact 6a and a magnetic flux flows to the right between the contacts, a forward Lorentz force acts on the arc generated between the first fixed contact 6a and the first movable contact 8a. When the arc is extended by this Lorentz force, the arc hits the front surface of the first blocking wall 31. This allows the first blocking wall 31 to prevent the arc from circulating around the movable contact piece 8.

[0052] In this embodiment, the first interrupting wall 31 is located directly above the first movable contact 8a when viewed from the left-right direction. This allows the first interrupting wall 31 to interrupt the arc in a well-balanced manner even if the direction in which the arc extends changes due to a change in the direction of the current flow.

[0053] Moreover, the first interrupting wall 31 is fixed to the movable member 9 that holds the movable contact piece 8. This stabilizes the positional relationship between the movable contact piece 8 and the first interrupting wall 31, so that a stable interrupting effect can be obtained by the first interrupting wall 31. Note that with regard to an arc generated between the second fixed contact 7a and the second movable contact 8b, a stable interrupting effect can be obtained by the second interrupting wall 32.

[0054] Although an embodiment of an electromagnetic relay according to one aspect of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications are possible without departing from the gist of the invention. For example, the configuration of the contact device 3 or the drive device 4 may be changed.

[0055] The movable contact piece 8 may be fixed to the movable member 9 so as to be immovable relative to the movable member 9. In this case, for example, the movable member 9 may be composed of a first part and a second part, the movable contact piece 8 may be fixed to the first part, and the contact spring 10 may be disposed between the first part and the second part.

[0056] In the above embodiment, the first blocking wall 31 and the second blocking wall 32 were integral with the movable member 9, but as shown in FIG. 5, the first blocking wall 31 and the second blocking wall 32 may be separate from the movable member 9.

[0057] The configurations of the first blocking wall 31 and the second blocking wall 32 may be changed. FIGS. 6 to 9 show modified examples of the first blocking wall 31. The first blocking wall 131 shown in FIG. 6 has an inverted triangular shape with a width increasing toward the upper direction when viewed from the left-right direction. The first blocking wall 131 includes an inclined portion 131a on which the arc hits. The inclined portion 131a is inclined with respect to the up-down direction when viewed from the left-right direction. The inclined portion 131a is inclined so that the upper end is located forward of the lower end. The first blocking wall 131 does not necessarily have to have an inverted triangular shape, and may have a configuration including at least the inclined portion 131a. The first blocking wall 131 may further include an inclined portion 131b that forms a pair with the inclined portion 131a.

[0058] 7 is T-shaped when viewed from the left-right direction. The first blocking wall 231 includes an extension 231a that is hit by the arc. The extension 231a extends in a direction perpendicular to the up-down direction. The first blocking wall 231 may be L-shaped when viewed from the left-right direction.

[0059] The first blocking wall 331 shown in Fig. 8 includes at least one through hole 331a. The at least one through hole 331a is a hole that penetrates the first blocking wall 331 in the front-rear and left-right directions. In the example shown in Fig. 8, the at least one through hole 331a is formed in a slit shape. The shape of the at least one through hole 331a may be another shape.

[0060] The first blocking wall 31 shown in Fig. 9 is shifted in the front-rear direction relative to the first movable contact 8a when viewed in the left-right direction. In the example shown in Fig. 9, the first blocking wall 31 is disposed rearward of the first movable contact 8a. The first blocking wall 31 may be disposed forward of the first movable contact 8a. The first blocking wall 31 may be configured by appropriately combining the modified examples shown in Figs. 6 to 9. The second blocking wall 32 may also be modified in the same manner as the first blocking wall 31.

[0061] In the above embodiment, the electromagnetic relay 1 is a hinge type, but the present invention may be applied to a plunger type electromagnetic relay as shown in Fig. 10 and Fig. 11. For example, the present invention may be applied to an electromagnetic relay configured to push the movable member 9 toward the first fixed contact 6a and the second fixed contact 7a as shown in Fig. 10, or configured to pull the movable member 9 toward the drive device 4 as shown in Fig. 7. In this case, the movable member 9 is a shaft member connected to the movable contact piece 8. In Fig. 10 and Fig. 11, components that correspond to those in the above embodiment are denoted by the same reference numerals as those in the above embodiment. [Explanation of symbols]

[0062] 1 Electromagnetic relay 6 1st fixed terminal 6a 1st fixed contact 7 Second fixed terminal 7a 2nd fixed contact 8 Movable contact piece 8a 1st fixed contact 8b 2nd fixed contact 31 First Barrier 32 Second Barrier

Claims

1. a first fixed terminal including a first fixed contact; a second fixed terminal including a second fixed contact; a movable contact piece including a first movable contact facing the first fixed contact and a second movable contact facing the second fixed contact; a movable member that is movable in a moving direction including a first direction from the first movable contact toward the first fixed contact and a second direction from the first fixed contact toward the first movable contact, through which the movable contact piece penetrates in the longitudinal direction of the movable contact piece, is disposed at a center of the movable contact piece in the longitudinal direction of the movable contact piece, and holds the movable contact piece; a first blocking wall formed of an insulating material, disposed in the second direction relative to the first movable contact, and fixed to the movable member, extending in the longitudinal direction of the movable contact piece from the movable member toward the first movable contact and in the moving direction of the movable member; a second blocking wall formed of an insulating material, extending from the movable member toward the second movable contact in a longitudinal direction of the movable contact piece and in the moving direction of the movable member, and fixed to the movable member; Equipped with the first blocking wall overlaps with the movable contact piece when viewed from the moving direction of the movable member; Electromagnetic relay.

2. The movable contact piece is fixed to the movable member.

2. An electromagnetic relay as claimed in claim 1.

3. The first blocking wall extends to the first movable contact in the longitudinal direction.

3. An electromagnetic relay according to claim 1 or 2.

4. The first blocking wall extends in the longitudinal direction to one end of the movable contact piece in the longitudinal direction.

4. An electromagnetic relay according to claim 1.

5. a first fixed terminal including a first fixed contact; a movable contact piece including a first movable contact facing the first fixed contact; a movable member that is movable in a moving direction including a first direction from the first movable contact toward the first fixed contact and a second direction from the first fixed contact toward the first movable contact, and that holds the movable contact piece; a first blocking wall formed of an insulating material, disposed in the second direction relative to the first movable contact, and fixed to the movable member, extending in the longitudinal direction of the movable contact piece from the movable member toward the first movable contact and in the moving direction of the movable member; Equipped with the first interrupting wall includes an inclined portion against which an arc generated between the first fixed contact and the first movable contact strikes, The inclined portion is inclined with respect to the moving direction of the movable contact piece when viewed from the longitudinal direction. Electromagnetic relay.

6. The first blocking wall has an inverted triangular shape whose width increases in the second direction when viewed from the longitudinal direction.

6. An electromagnetic relay according to claim 5.

7. a first fixed terminal including a first fixed contact; a movable contact piece including a first movable contact facing the first fixed contact; a movable member that is movable in a moving direction including a first direction from the first movable contact toward the first fixed contact and a second direction from the first fixed contact toward the first movable contact, and that holds the movable contact piece; a first blocking wall formed of an insulating material, disposed in the second direction relative to the first movable contact, and fixed to the movable member, extending in the longitudinal direction of the movable contact piece from the movable member toward the first movable contact and in the moving direction of the movable member; Equipped with the first interrupting wall includes an extension portion that is struck by an arc generated between the first fixed contact and the first movable contact, The extension portion extends in a direction perpendicular to the moving direction of the movable member. Electromagnetic relay.

8. The first blocking wall is T-shaped when viewed in the longitudinal direction.

8. An electromagnetic relay according to claim 7.

9. a first fixed terminal including a first fixed contact; a movable contact piece including a first movable contact facing the first fixed contact; a movable member that is movable in a moving direction including a first direction from the first movable contact toward the first fixed contact and a second direction from the first fixed contact toward the first movable contact, and that holds the movable contact piece; a first blocking wall formed of an insulating material, disposed in the second direction relative to the first movable contact, and fixed to the movable member, extending in the longitudinal direction of the movable contact piece from the movable member toward the first movable contact and in the moving direction of the movable member; Equipped with The first blocking wall includes at least one through hole penetrating in a short-side direction of the movable contact piece. Electromagnetic relay.

10. The at least one through hole is slit-shaped.

10. An electromagnetic relay according to claim 9.

11. The first blocking wall is integrally formed with the movable member.

11. An electromagnetic relay according to any one of claims 1 to 10.

12. The first blocking wall is separate from the movable member.

11. An electromagnetic relay according to any one of claims 1 to 10.

13. The first blocking wall is shifted in a short-side direction of the movable contact piece with respect to the first movable contact when viewed in the longitudinal direction.

13. An electromagnetic relay according to any one of claims 1 to 12.

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