Electromagnetic relay

Abstract

To improve the accuracy of a position of a movable contact piece while improving assemblability in an electromagnetic relay.SOLUTION: An electromagnetic relay comprises: a first stationary terminal including a first stationary contact; a second stationary terminal including a second stationary contact; a movable contact piece including a first movable contact and a second movable contact; a movable member; and an electromagnet block. 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. A contact spring urges the movable contact piece in the first direction. The electromagnet block includes a rotatable movable iron piece and moves the movable member in the movement directions. The movable contact piece and the contact spring are inserted into the movable member from the opposite side to a side on which the electromagnetic block is located. The movable member includes a first member formed of a single member. The first member includes a press part pressed by the movable iron piece in the first direction in accordance with the rotation of the movable iron piece, and a support part supporting the movable contact piece in the movement directions of the movable member.SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] The electromagnetic relay disclosed in Patent Document 1 comprises a fixed terminal, a movable contact piece, a movable member that holds the movable contact piece, an electromagnet block that moves the movable contact piece via the movable member, and a contact spring that is disposed on the movable member and biases the movable contact piece toward the fixed terminal.

[0003] The movable member is composed of two members, a first member and a second member, in consideration of ease of assembly of the movable contact piece and the contact spring. The movable contact piece and the contact spring are inserted into the first member from the side opposite to the side where the electromagnet block is located, and are sandwiched in the moving direction of the movable member by the first member and the second member connected to the first member. The second member prevents the contact spring from coming off in the moving direction of the movable member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-136101 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the electromagnetic relay of Patent Document 1, the movable member is composed of two members in the moving direction of the movable member, so the movable contact piece is affected by dimensional errors and assembly errors of the two members, which may cause variations in the positional accuracy of the movable contact piece in the moving direction of the movable member.

[0006] An object of the present invention is to improve the ease of assembly of an electromagnetic relay and to improve the positional accuracy of a movable contact piece in the moving direction of a movable member. [Means for solving the problem]

[0007] An electromagnetic relay according to an embodiment of the present invention includes a first fixed terminal, a second fixed terminal, a movable contact piece, a movable member, and an electromagnet block. The first fixed terminal includes a first fixed contact. The second fixed terminal includes a second fixed contact. The movable contact piece includes a first movable contact facing the first fixed contact and a second fixed contact facing the second fixed contact. The movable member supports the movable contact piece. The movable member is movable in a movement 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. The contact spring is disposed on the movable member and biases the movable contact piece in the first direction. The electromagnet block includes a rotatable movable iron piece and moves the movable member in the movement direction. The movable contact piece and the contact spring are inserted into the movable member from the side opposite to the side where the electromagnet block is located. The movable member includes a first member constituted of a single member. The first member includes a pressing portion that is pressed in a first direction by the movable iron piece in response to rotation of the movable iron piece, and a supporting portion that supports the movable contact piece in the moving direction of the movable member.

[0008] In this electromagnetic relay, the movable contact piece and the contact spring are inserted into the movable member from the side opposite to the side where the electromagnet block is located, which improves ease of assembly. Also, since the movable member moves in response to the rotation of the movable iron piece, it is possible to support the movable contact piece and the contact spring in the moving direction of the movable member by the first member made of a single member. This improves the positional accuracy of the movable contact piece in the moving direction of the movable member. Also, since the first member includes a pressing portion pressed by the movable iron piece and a supporting portion supporting the movable contact piece in the moving direction of the movable member, it is possible to further improve the positional accuracy of the movable contact piece in the moving direction of the movable member compared to a case where the pressing portion and the supporting portion are made of different members.

[0009] The contact spring may be disposed in contact with the first member of the movable member and the movable contact piece in the moving direction of the movable member, whereby the positional accuracy of the movable contact piece in the moving direction of the movable member can be further improved.

[0010] The electromagnetic relay may further include a return spring arranged in contact with the first member of the movable member and biasing the first member of the movable member in the second direction. In this case, in an electromagnetic relay including a return spring arranged in contact with the movable member, it is possible to improve the positional accuracy of the movable contact piece in the moving direction of the movable member.

[0011] The electromagnetic relay may further include a base that is disposed in contact with only the first member with respect to the movable member and guides the movement of the movable member. In this case, since only the first member of the movable member contacts the base, the positional accuracy of the movable member and the base can be improved. As a result, the tilt and wear of the movable member can be suppressed.

[0012] The base may limit movement of the movable member in the longitudinal and lateral directions of the movable contact piece, thereby improving the positional accuracy of the movable member and the base in the longitudinal and lateral directions of the movable contact piece.

[0013] The movable member may further include a second member separate from the first member. The first member may include an insertion hole that opens toward the side opposite to the side where the electromagnet block is located and into which the movable contact piece and the contact spring are inserted. The second member is assembled to the first member from the side opposite to the side where the electromagnet block is located, and prevents the movable contact piece and the contact spring from coming out of the insertion hole. In this case, the movable contact piece and the contact spring can be prevented from coming out by the second member.

[0014] The second member may include a positioning portion that positions the movable contact piece in the longitudinal direction of the movable contact piece. The movable contact piece may include a first engagement portion that engages with the positioning portion of the second member. In this case, the movable contact piece can be positioned in the longitudinal direction of the movable contact piece.

[0015] The first member may include a positioning portion that positions the movable contact piece in the longitudinal direction of the movable contact piece. The movable contact piece may include a second engagement portion that engages with the positioning portion of the first member. In this case, the movable contact piece can be positioned in the longitudinal direction of the movable contact piece.

[0016] The movement of the movable contact piece in the short-side direction may be restricted by the first and second members of the movable member, in which case the movable contact piece can be positioned in the long-side direction.

[0017] The movable contact piece may include a spring support portion for positioning the contact spring. In this case, the contact spring can be positioned by the movable contact piece. Effect of the Invention

[0018] According to the present invention, in an electromagnetic relay, it is possible to improve the positional accuracy of a movable contact piece while improving the ease of assembly. [Brief description of the drawings]

[0019] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] 2 is a cross-sectional view of the electromagnetic relay taken along a plane perpendicular to the left-right direction. FIG. [Figure 4] 2 is a cross-sectional view of the contact device taken along a plane perpendicular to the front-rear direction. FIG. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] 2 is a partial cross-sectional view of the electromagnetic relay taken along a plane perpendicular to the up-down direction. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] 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.

[0021] As shown in Figures 1 to 4, the electromagnetic relay 1 includes a base 2, a contact device 3, and an electromagnet block 4. The base 2 is formed of an insulating material such as resin. The base 2 supports the contact device 3 and the electromagnet block 4. The contact device 3 and the electromagnet block 4 are covered by a case 20 (see Figure 7) attached to the base 2. Note that the case 20 is omitted in Figures 1 to 4.

[0022] Fig. 4 is a cross-sectional view of the contact device 3 cut along a plane perpendicular to the front-rear direction. Fig. 5 is a partial perspective view of the base 2. The base 2 includes a bottom portion 21, terminal support portions 22a and 22b, a first wall portion 23, and a second wall portion 24. The bottom portion 21 is rectangular when viewed from the top-bottom direction.

[0023] 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.

[0024] The first wall portion 23 extends in a direction perpendicular to the front-rear direction. The first wall portion 23 protrudes upward from the bottom portion 21 and extends in the left-right direction. The first wall portion 23 is disposed forward of the terminal support portions 22a, 22b. The second wall portion 24 faces the first wall portion 23 in the front-rear direction. The second wall portion 24 is disposed rearward of the terminal support portions 22a, 22b.

[0025] 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.

[0026] 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.

[0027] The first fixed terminal 6 includes a first fixed contact 6a, a contact support portion 6b, a pair of extension portions 6c, and a pair of external connection portions 6d. 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.

[0028] 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 welded to the first fixed terminal or may be integral with the first fixed terminal 6.

[0029] The pair of extension portions 6c are press-fitted and fixed to the bottom portion 21 of the base 2. The pair of extension portions 6c are bent downward from both ends in the front-rear direction of the contact support portion 6b and protrude downward from the bottom portion 21 of the base 2. The pair of external connection portions 6d are disposed at the lower ends of the pair of extension portions 6c and are electrically connected to external devices (not shown).

[0030] 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 pair of extension portions 7c, and a pair of external connection portions 7d. 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.

[0031] 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. The movable contact piece 8 is inserted into the movable member 9 from the side opposite to the side where the electromagnet block 4 is located. That is, in this embodiment, the movable contact piece 8 is inserted into the movable member 9 from the front side.

[0032] The movable contact piece 8 includes a first movable contact 8a, a second movable contact 8b, a spring support portion 8c, and a pair of engagement portions 8d. The first movable contact 8a and the second movable contact 8b are disposed 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. In this embodiment, the first movable contact 8a and the second movable contact 8b are fixed to the movable contact piece 8 by crimping. The first movable contact 8a and the second movable contact 8b may be welded to the movable contact piece 8 or may be integral with the movable contact piece 8.

[0033] The spring support portion 8c supports the contact spring 10. The spring support portion 8c is disposed at the center in the longitudinal direction of the movable contact piece 8. The spring support portion 8c is a protrusion that protrudes upward from the upper surface of the movable contact piece 8.

[0034] The pair of engaging portions 8d are formed near the center in the longitudinal direction of the movable contact piece 8 so as to protrude outward from both ends in the lateral direction of the movable contact piece 8. The pair of engaging portions 8d are an example of a first engaging portion and a second engaging portion.

[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 supported 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 made of an insulating material such as resin. The movable member 9 supports the movable contact piece 8. The movable member 9 extends in the up-down direction. The movable member 9 is disposed in the center of the movable contact piece 8 in the left-right direction.

[0037] The upper end of the movable member 9 is connected to the electromagnet block 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] Here, as shown in FIG. 5, the base 2 includes a recess 25 and a guide portion 26. The recess 25 is disposed between the first wall portion 23 and the second wall portion 24. The recess 25 is formed so as to be recessed downward from the upper surface of the bottom portion 21. The recess 25 opens upward. The recess 25 is formed in a non-circular shape when viewed from the top-bottom direction. The guide portion 26 guides the movement of the movable member 9 in the up-down direction. The guide portion 26 is formed by a part of the recess 25. The guide portion 26 is formed by the inner side surface of the recess 25. The guide portion 26 includes a circular portion 26a and a protruding portion 26b protruding in the front-rear direction from the circular portion 26a.

[0039] The movable member 9 includes a first member 31 and a second member 32. The first member 31 is composed of a single member. The outer diameter dimension of the first member 31 corresponds to the outer dimension of the movable member 9. That is, the outer dimension of the movable member 9 is the outer dimension of the first member 31 composed of a single member. In this embodiment, in the left-right direction of the base 2, only the first member 31 contacts the movable member 9. In the front-rear direction of the base 2, only the first member 31 contacts the movable member 9. In the up-down direction of the base 2, only the first member 31 contacts the movable member 9. The base 2 restricts the movement of the movable member 9 in the longitudinal direction and the lateral direction of the movable contact piece 8. The first member 31 is restricted in the left-right direction and the front-rear direction by the first wall portion 23, the second wall portion 24, and the guide portion 26.

[0040] The first member 31 includes a pressing portion 31a, an insertion hole 31b, a support portion 31c, a spring accommodating portion 31d, a positioning portion 31e, and a sliding portion 31f. The pressing portion 31a is disposed on the upper portion of the first member 31. The upper surface of the pressing portion 31a is formed to be substantially flat. The pressing portion 31a is pressed downward by the movable iron piece 4e in response to the rotation of the movable iron piece 4e described later.

[0041] The insertion hole 31b is a hole for inserting the movable contact piece 8 and the contact spring 10 from the side opposite to the side where the electromagnet block 4 is located. The insertion hole 31b is open toward the front. The insertion hole 31b has a shape that is recessed from the front surface of the first member 31 toward the rear. The insertion hole 31b is open in the left-right direction.

[0042] The support portion 31c supports the movable contact piece 8 in the vertical direction. The support portion 31c is formed by a part of the lower surface of the insertion hole 31b. The support portion 31c is formed by a flat surface perpendicular to the vertical direction. The support portion 31c comes into contact with the lower surface of the movable contact piece 8.

[0043] The spring accommodating portion 31d is formed inside the sliding portion 31f. The spring accommodating portion 31d is disposed at the lower portion of the first member 31. The spring accommodating portion 31d opens downward. The spring accommodating portion 31d has a shape that is recessed from the bottom toward the top.

[0044] The positioning portion 31e is formed in the insertion hole 31b. The positioning portion 31e positions the movable contact piece 8 in the longitudinal direction of the movable contact piece 8. The positioning portion 31e has a shape recessed toward the rear on the rear surface of the insertion hole 31b. The positioning portion 31e engages with one of a pair of engagement portions 8d of the movable contact piece 8.

[0045] The sliding portion 31f has a shape that follows the shape of the guide portion 26, and is guided by the guide portion 26. The sliding portion 31f slides relative to the guide portion 26 in the up-down direction.

[0046] The second member 32 is separate from the first member 31. The second member 32 is attached to the first member 31 from the side opposite to the side where the electromagnet block 4 is located. The second member 32 is attached so as to cover the insertion hole 31b of the first member 31 from the front, and prevents the movable contact piece 8 and the contact spring 10 from coming out of the insertion hole 31b. The movable contact piece 8 is sandwiched between the first member 31 and the second member 32 in the front-rear direction. That is, the movement of the movable contact piece 8 in the short direction is restricted by the first member 31 and the second member 32.

[0047] The second member 32 is connected to the first member 31 by snap fitting. The second member 32 includes a pair of claw portions 32a. As shown in FIG. 3, the pair of claw portions 32a penetrate the first member 31 in the front-rear direction and engage with locking portions formed on the rear surface of the first member 31.

[0048] The second member 32 further includes a positioning portion 32b that positions the movable contact piece 8 in the longitudinal direction of the movable contact piece 8. The positioning portion 32b engages with the other of the pair of engaging portions 8d of the movable contact piece 8.

[0049] The second member 32 is separated from the base 2 and the electromagnet block 4. In other words, the second member 32 is not in direct contact with the base 2 and the electromagnet block 4, and does not slide relative to the base 2. The second member 32 moves integrally with the first member 31.

[0050] 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 accommodated in the insertion hole 31b of the first member 31 in a state compressed in the vertical direction. The contact spring 10 presses the movable contact piece 8 toward the support portion 31c of the first member 31. The contact spring 10 is disposed in contact with the first member 31 and the movable contact piece 8. The upper end outer peripheral surface of the contact spring 10 contacts the inner surface of the insertion hole 31b and the inner surface of the second member 32, and the radial movement of the contact spring 10 is restricted. The upper end of the contact spring 10 contacts the inner surface of the insertion hole 31b. The lower end of the contact spring 10 is disposed on the spring support portion 8c of the movable contact piece 8, and the radial movement of the contact spring 10 is restricted.

[0051] The electromagnet block 4 is disposed behind the contact device 3. The electromagnet block 4 moves the movable contact piece 8 in the vertical direction via the movable member 9. The electromagnet block 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.

[0052] The coil 4a is wound around the outer periphery of the spool 4b. The coil 4a is connected to a coil terminal 4h. The coil terminal 4h includes a pair of tab terminals and protrudes downward from the bottom 21 of the base 2. The coil terminal 4h is connected to an external power source that supplies driving power to the coil 4a. vinegar 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.

[0053] The movable iron piece 4e is rotatably supported by the yoke 4d via the hinge spring 4f. The movable iron piece 4e rotates around the upper end of the yoke 4d as a fulcrum. The movable iron piece 4e is disposed above the fixed iron core 4c. The movable iron piece 4e is disposed with its front end in contact with the pressing portion 31a of the first member 31. The movable iron piece 4e presses the pressing portion 31a of the first member 31 downward in response to the rotation. 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 disposed between the first member 31 of the movable member 9 and the bottom portion 21 of the base 2. The return spring 4g is disposed in contact with the first member 31. The upper portion of the return spring 4g is accommodated in the spring accommodating portion 31d, and the lower portion is accommodated in the recess 25. The return spring 4g biases the movable member 9 in the separation direction (here, upward).

[0054] 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.

[0055] When a voltage is applied to the coil 4a and the electromagnet block 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.

[0056] In this electromagnetic relay, the movable contact piece 8 and the contact spring 10 are inserted into the movable member 9 from the side opposite to the side where the electromagnet block 4 is located, which improves ease of assembly. In addition, the movable member 9 moves in response to the rotation of the movable iron piece 4e, so that the movable contact piece 8 and the contact spring 10 can be supported by the first member 31, which is made of a single member, in the moving direction of the movable member 9. This improves the positional accuracy of the movable contact piece 8 in the moving direction of the movable member 9. In addition, the first member 31 includes a pressing portion 31a pressed by the movable iron piece 4e and a supporting portion 31c supporting the movable contact piece 8 in the moving direction of the movable member 9, which improves the positional accuracy of the movable contact piece 8 in the moving direction of the movable member 9, compared to a case where the pressing portion 31a and the supporting portion 31c are made of different members.

[0057] Furthermore, in this embodiment, in the movable member 9, only the first member 31 comes into contact with the base 2. This makes it possible to improve the positional accuracy between the movable member 9 and the base 2, thereby making it possible to suppress tilting and wear of the movable member 9.

[0058] Since the contact spring 10 is arranged in contact with the first member 31 of the movable member 9 and the movable contact piece 8 in the movement direction of the movable member 9, the positional accuracy of the movable contact piece 8 in the movement direction of the movable member 9 can be improved.

[0059] 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 electromagnet block 4 may be changed.

[0060] It is sufficient that the first member 31 includes at least the pressing portion 31a and the supporting portion 31c. For example, the spring accommodating portion 31d in the first member 31 may be omitted.

[0061] The second member 32 may be omitted. In this case, for example, the insertion hole 31b of the first member 31 may be provided with a shape that prevents the movable contact piece 8 and the contact spring 10 from slipping out of the insertion hole 31b. [Explanation of symbols]

[0062] 1 Electromagnetic relay 2. Bass 4 Electromagnet Block 4e Movable iron piece 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 9 Movable parts 10 Contact spring 31 First member 31a Pressing part 31b Insertion hole 31c Support part 32 Second member

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 including a first member made of a single member, 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 supporting the movable contact piece; a contact spring disposed on the movable member and biasing the movable contact piece in the first direction; an electromagnet block including a rotatable movable iron piece for moving the movable member in a moving direction of the movable member; a base including a recess formed to be recessed in the first direction and a guide portion configured by a part of the recess and configured to guide the movement of the movable member, the base being disposed in contact with only the first member with respect to the movable member; Equipped with the movable contact piece and the contact spring are inserted into the movable member from a side opposite to a side on which the electromagnet block is located, the first member includes a pressing portion that is pressed by the movable iron piece in the first direction in response to rotation of the movable iron piece, a support portion that supports the movable contact piece in the moving direction of the movable member, and a sliding portion that slides in the moving direction relative to the guide portion, The guide portion limits the movement of the first member in a direction intersecting a movement direction of the movable member. Electromagnetic relay.

2. The contact spring is disposed in contact with the first member and the movable contact piece of the movable member in a moving direction of the movable member.

2. An electromagnetic relay as claimed in claim 1.

3. The movable member further includes a return spring disposed in contact with the first member of the movable member and biasing the first member of the movable member in the second direction.

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

4. The first member further includes a spring accommodating portion formed inside the sliding portion and accommodating the return spring.

4. An electromagnetic relay according to claim 3.

5. The guide portion of the base has a non-circular shape when viewed from the moving direction.

5. An electromagnetic relay according to claim 1.

6. The movable member further includes a second member separate from the first member, the first member includes an insertion hole that opens toward the opposite side and into which the movable contact piece and the contact spring are inserted, the second member is assembled to the first member from the opposite side and prevents the movable contact piece and the contact spring from coming out of the insertion hole.

6. An electromagnetic relay according to claim 1.

7. the second member includes a positioning portion that positions the movable contact piece in a longitudinal direction of the movable contact piece, The movable contact piece includes a first engagement portion that engages with the positioning portion of the second member.

7. An electromagnetic relay according to claim 6.

8. the first member includes a positioning portion that positions the movable contact piece in a longitudinal direction of the movable contact piece, The movable contact piece includes a second engagement portion that engages with the positioning portion of the first member.

8. An electromagnetic relay according to claim 6 or 7.

9. The movement of the movable contact piece in the short side direction is limited by the first member and the second member of the movable member.

9. An electromagnetic relay according to any one of claims 6 to 8.

10. The movable contact piece includes a spring support portion that positions the contact spring.

10. An electromagnetic relay according to any one of claims 1 to 9.

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