JP2010231985A - Electromagnetic relay - Google Patents

Abstract

An electromagnetic relay that can be reduced in size is provided.
An electromagnetic relay 10 includes an iron core 12 in which an iron core body 23 and an iron core yoke 24 are connected in a substantially L shape, a bobbin 14 that covers the iron core body and around which a conductive coil 15 is wound, and an iron core yoke. The armature 17 is connected to the core body by the hinge spring 16 and the contact mechanism 19 is connected to the armature via the connecting member 18. This electromagnetic relay 10 has an adjustment member 13 provided at the other end 23b of the core body, and the adjustment member extends in a direction intersecting the longitudinal direction of the core body, and also with respect to the longitudinal direction of the core body. A substantially parallel contact surface 13a is provided, and the contactor is configured to approach and separate from the contact surface.
[Selection] Figure 8

Description

  The present invention relates to an electromagnetic relay in which an armature is supported by a hinge spring so as to be close to and away from an iron core body, and a contact mechanism is connected to the armature.

  The electromagnetic relay includes an iron core around which a coil is wound, a resin body that supports the iron core, an L-shaped yoke that is connected to one end in the axial direction of the iron core, and is arranged in parallel with the iron core, and a hinge spring on the yoke Is connected to the other end portion of the iron core, and a contact mechanism is connected to the armature via a connecting member.

  When current flows through the coil wound around the iron core, the armature is adsorbed to the other end of the iron core along the axial direction of the iron core. When the armature is attracted to the other end of the iron core, the contact mechanism is operated by the interlocking connecting member, and conduction is obtained (for example, see Patent Document 1).

JP-A-6-267388

However, since Patent Document 1 has a structure in which the armature comes into contact with one end of the iron core by approaching and separating along the axial direction of the iron core, it is necessary to dispose the armature on the axis of the iron core.
Therefore, the dimension along the axial direction of the iron core in the case cannot be reduced, and downsizing is difficult.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electromagnetic relay that can be miniaturized.

  The present invention provides an iron core in which an iron core body and an iron core yoke are connected in a substantially L shape, a bobbin that covers the iron core body and around which a conductive coil is wound, and is connected to the iron core yoke and is connected to the iron core by a hinge spring. An electromagnetic relay comprising an armature that is close to and away from the main body, and a contact mechanism that is connected to the armature via a connecting member, and has an adjustment member that is provided at an end of the core body, The adjustment member extends in a direction intersecting with the longitudinal direction of the iron core body, and a contact surface substantially parallel to the longitudinal direction of the iron core body is provided, and the contactor approaches and separates from the contact surface. To do.

In the present invention, an adjustment member is provided at the end of the core body, the adjustment member is extended in a direction intersecting the longitudinal direction of the core body, and a contact surface substantially parallel to the longitudinal direction of the core body is provided on the adjustment member. Formed. Then, the contactor is moved close to and away from the contact surface.
Thereby, it is not necessary to arrange an armature on the axis of the iron core body, design freedom is obtained, and miniaturization can be achieved.

The perspective view which shows the electromagnetic relay (1st Embodiment) which concerns on this invention The side view which shows the electromagnetic relay of 1st Embodiment The front view which shows the electromagnetic relay of 1st Embodiment The perspective view which shows the state which looked at the electromagnetic relay of 1st Embodiment from the downward direction The exploded perspective view which shows the state which decomposed | disassembled the coating | coated member from the electromagnetic relay of FIG. The disassembled perspective view which shows the state which removed the body from the electromagnetic relay of FIG. The perspective view which shows the body and bobbin of the electromagnetic relay of 1st Embodiment The side view which shows the state which removed the body from the electromagnetic relay of FIG. The disassembled perspective view which shows the body and coating | coated member of 1st Embodiment The side view explaining the state which makes a contactor approach / separate from the adjustment member of 1st Embodiment The perspective view which shows the hinge spring of 1st Embodiment Sectional drawing explaining the example which attaches the hinge spring of 1st Embodiment to a body The perspective view which shows the spring member of 1st Embodiment. The side view which shows the example which maintains the spring member of FIG. 13 in a contact / non-contact state with a connection member Sectional drawing explaining the example which attaches the hinge spring of 2nd Embodiment to a body Sectional drawing explaining the example which attaches the hinge spring of 3rd Embodiment to a body Sectional drawing explaining the example which attaches the hinge spring of 4th Embodiment to a body The side view which shows the example which maintains the spring member of 4th Embodiment in a contact / non-contact state with a connection member

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.

(First embodiment)
The electromagnetic relay 10 which concerns on 1st Embodiment is demonstrated.
As shown in FIGS. 1 to 8, the electromagnetic relay 10 includes a body 11 that is a base portion of the electromagnetic relay 10, a substantially L-shaped iron core 12 (see FIGS. 6 and 8) supported by the body 11, and an iron core. 12, a bobbin 14 (see FIG. 7) that covers the iron core 12 and around which the conductive coil 15 is wound, a hinge spring 16 provided on the body 11, and an armature supported by the hinge spring 16. 17, a contact mechanism 19 connected to the armature 17 via a connecting member 18, and a magnetic spring member 21 (see FIGS. 8 and 13) provided between the connecting member 18 and the iron core 12. I have.

As shown in FIGS. 6 and 8, the iron core 12 includes an iron core body 23 that extends in a straight line, and an iron core that is provided (extended) on one end portion (end portion of the iron core) 23 a of the iron core body 23. And a yoke 24.
The iron core 12 is formed in an approximately L shape by an iron core body 23 and an iron core yoke 24.

As shown in FIGS. 5 and 9, the body 11 is formed of an insulating material in a substantially rectangular shape, and a substantially U-shaped recess 26 is provided in the one end portion 11a.
The recess 26 can accommodate the one end 23 a of the core body 23 and is formed so as to penetrate along the longitudinal direction of the core body 23.

As shown in FIG. 5, one end 17 a of the contact 17 is accommodated in the recess 26 so as to face the end 24 a of the iron core yoke 24.
The hinge spring 16 is attached to the one end 11 a of the body 11, so that the one end 17 a of the contact 17 is held in the recess 26.

Thus, by accommodating the one end 23a of the iron core body 23 in the recess 26, the iron core 12 can be lowered to the body 11 side, and the electromagnetic relay 10 can be downsized.
In addition, the hinge spring 16 can be brought closer to the body 11 by accommodating the one end 23a of the iron core body 23 in the recess 26 (see FIG. 6), and the electromagnetic relay 10 can be further reduced in size.

Furthermore, as shown in FIGS. 4 and 5, the body 11 includes a covering member 28 on the opposite side (lower surface 11 b) of the body 11 to the core body 23.
The covering member 28 is a member that is formed of a material having higher strength than the body 11 and covers the entire area of the lower surface 11 b of the body 11 while covering the recess 26.

By covering the entire lower surface 11b of the body 11 with the covering member 28, the strength of the body 11 can be improved.
In addition, the reinforcing strength of the body 11 can be further increased by making the covering member 28 stronger than the body 11.

As shown in FIG. 9, the covering member 28 has a recessed portion 29 provided (formed) at a portion of the surface 28 a on the body 11 side that faces the recessed portion 26.
By providing the recess 29 in the covering member 28, interference with the contact 17 (specifically, one end 17a) disposed in the recess 26 can be avoided as shown in FIG.

As shown in FIGS. 7 and 8, the adjustment member 13 has the other end portion of the core body 23 (the end portion of the core body 23) by fitting the fitting hole 30 into the other end portion 23 b of the core body 23. ) 23b.
The adjusting member 13 extends in a direction intersecting the longitudinal direction of the core body 23 and is formed in a substantially L shape by providing a contact surface 13a substantially parallel to the longitudinal direction of the core body 23. Yes.

The contact surface 13a is formed to be bent toward the body 11 side. Therefore, it is not necessary to project the contact surface 13a upward from the other end 23b of the core body 23.
That is, since the contact surface 13a can be provided on the lower side of the other end 23b of the core body 23, there is no possibility that the electromagnetic relay 10 is increased in size.

As shown in FIG. 8, the contact surface 13 a is disposed at a position protruding from the other end 23 b of the core body 23 toward the other end 17 b of the armature 17 by a distance L.
Then, as shown in FIGS. 10A and 10B, the other end 17b of the contact 17 is moved closer to and away from the contact surface 13a.
Thereby, it is not necessary to arrange the other end portion 17b of the armature 17 on the axis of the iron core body 23, and a degree of freedom in design can be obtained and downsizing can be achieved.

As shown in FIG. 7, the bobbin 14 is provided on the body 11 and houses the iron core 12 (specifically, the iron core main body 23), and a conductive coil 15 (see FIG. 1) is wound around the outside. .
The bobbin 14 is formed of an insulating material, like the body 11.

As shown in FIG. 1, the hinge spring 16 is a leaf spring that is provided on the body 11 and is elastically deformable.
As shown in FIGS. 6 and 11, the hinge spring 16 includes a plate-like hinge spring body 31, plate-like first insertion pieces 32 and second pieces extending in the thickness direction from the longitudinal ends 31 a and 31 b of the hinge spring body 31, respectively. The insertion piece 33 and a support piece 34 (see also FIG. 8) bent in an inclined manner from the center of the lower side of the hinge spring body 31 toward the body 11 (the end 24a of the iron core yoke 24).

As shown in FIGS. 12A and 12B, the first insertion piece 32 and the second insertion piece 33 are each bent so as to be substantially orthogonal to the hinge spring body 31.
That is, the first insertion piece 32 and the second insertion piece 33 are held at a no-load relative angle θ1 in a no-load state in which they are not inserted into a first insertion hole 35 and a second insertion hole 36, which will be described later. Yes.
The unloaded relative angle θ1 is an angle with respect to the hinge spring body 31 and is set to approximately 90 ° in the first embodiment.

The first insertion piece 32 is formed to be insertable into a first insertion hole 35 formed in the body 11. The second insertion piece 33 is formed so as to be insertable into a second insertion hole 36 formed in the body 11.
The first insertion hole 35 and the second insertion hole 36 are formed in an inclined shape with an inclination angle θ2 so that the respective intervals gradually decrease from the opening toward the bottom.

Therefore, when the first insertion piece 32 and the second insertion piece 33 are inserted into the first insertion hole 35 and the second insertion hole 36, respectively, the relative angle at the time of insertion of the first insertion piece 32 and the second insertion piece 33 Is held at θ2.
Here, the relative angle θ2 at the time of insertion is set to an angle different from the relative angle θ1 at the time of no load.

  In this way, the first insertion piece 32 and the second insertion piece 33 inserted into the first insertion hole 35 and the second insertion hole 36 are maintained by maintaining the insertion relative angle θ2 at an angle different from the no-load relative angle θ1. However, the hinge spring 16 can be fixed to the body 11 because it is difficult to be removed from the insertion holes 35 and 36.

  As a result, it is possible to eliminate the need for caulking, which is conventionally required to fix the hinge spring 16 to the body 11, so that there is no possibility of deformation of the hinge spring 16, and the assembly process can be simplified.

  As shown in FIGS. 5 and 8, the support piece 34 of the hinge spring 16 is a bent piece that supports the end 17 a of the armature 17 in a pressed state when the hinge spring 16 is fixed to the body 11.

  As shown in FIG. 8, the armature 17 is connected to the iron core yoke 24 by supporting (pressing) one end portion 17 a on the hinge spring 16, and the other end portion 17 b is connected to the contact surface of the adjustment member 13 by the hinge spring 16. It is a member that can be moved close to and away from 13a (iron core body 23).

That is, the armature 17 is held away from the contact surface 13a by the urging force of the hinge spring 16 in the non-energized state, and is in the proximity state to the contact surface 13a against the urging force of the hinge spring 16 in the energized state. Retained.
The other end 17 a of the armature 17 is connected to the contact mechanism 19 via the connecting member 18.

As shown in FIG. 8, the spring member 21 is an elastically deformable magnetic body provided between the adjustment member 13 (the other end 23 b of the iron core body 23) and the connecting member 18.
As illustrated in FIGS. 8 and 13, the spring member 21 includes a first member 41 fixed to the adjustment member 13 and a second member 42 that is connected to the first member 41 and contacts the connecting member 18.

The first member 41 is fixed to the adjustment member 13 by welding, for example.
In the initial shape, the second member 42 is bent so as to have an upward slope from the end 41 a of the first member 41 toward the connecting member 18.
As shown in FIG. 14A, in the second member 42, the tip end portion 42a of the second member 42 is in contact with the connecting member 18 normally (when no power is supplied).
On the other hand, as shown in FIG. 14B, the tip 42 a is separated from the connecting member 18 by being attracted to the adjusting member 13 during energization.

Friction can be generated between the tip end portion 42 a and the connecting member 18 by bringing the tip end portion 42 a of the second member 42 into contact with the connecting member 18 normally (when power is not supplied).
Thereby, it is possible to prevent the connection member 18 from moving unintentionally due to inertia by friction and prevent malfunction due to vibration, impact, or the like.

On the other hand, the second member 42 is attracted to the adjustment member 13 during energization, and the tip end portion 42 a of the second member 42 is separated from the connecting member 18.
Thus, during energization, the distal end portion 42a of the second member 42 can be separated from the connecting member 18 so that the operation of the connecting member 18 is not hindered.

According to the electromagnetic relay 10, as shown in FIG. 2, the armature 17 is held in a non-contact state with respect to the core yoke 24 by the biasing force of the hinge spring 16 by putting the conductive coil 15 in a non-energized state. .
As a result, in the contact mechanism 19, the movable terminal 51 is held away from the fixed terminal 52 via the connecting member 18.

Further, by setting the conductive coil 15 in the energized state, the armature 17 is held in proximity to the iron core yoke 24 against the biasing force of the hinge spring 16.
Accordingly, in the contact mechanism 19, the movable terminal 51 is held in contact with the fixed terminal 52 via the connecting member 18.
When the movable terminal 51 is held in contact with the fixed terminal 52, the movable terminal 51 and the fixed terminal 52 are electrically connected, and a signal is output through them.

(Second Embodiment)
The first insertion hole 61 and the second insertion hole 62 according to the second embodiment will be described.
As shown in FIGS. 15A and 15B, the first insertion hole 61 and the second insertion hole 62 of the second embodiment are inclined so that the respective intervals gradually increase from the opening toward the bottom. Inclined at θ3.
That is, the insertion relative angle θ3 is set to be different from the no-load relative angle θ1.

  In this way, the first insertion piece 32 and the second insertion piece 33 inserted into the first insertion hole 61 and the second insertion hole 62 are maintained by maintaining the insertion relative angle θ3 at an angle different from the no-load relative angle θ1. However, the hinge spring 16 can be fixed to the body 11 because it is difficult to be removed from the insertion holes 61 and 62.

  As a result, it is possible to eliminate the need for caulking, which is conventionally required to fix the hinge spring 16 to the body 11, so that there is no possibility of deformation of the hinge spring 16, and the assembly process can be simplified.

  That is, according to the first insertion hole 61 and the second insertion hole 62 of the second embodiment, the same effect as the first insertion hole 35 and the second insertion hole 36 of the first embodiment can be obtained.

(Third embodiment)
A hinge spring 70 according to the third embodiment will be described.
As shown in FIGS. 16A and 16B, the hinge spring 70 of the third embodiment is configured so that the first insertion piece 71 and the second insertion piece 72 have a no-load relative angle θ 4 with respect to the hinge spring body 31. It is bent in an inclined shape.
Further, the first insertion hole 74 and the second insertion hole 75 are formed in parallel with each other at an angle θ5 substantially orthogonal to the hinge spring body 31.
That is, the insertion relative angle θ5 is set to be different from the no-load relative angle θ4.

  As described above, the first insertion piece 71 and the second insertion piece 72 inserted into the first insertion hole 74 and the second insertion hole 75 are maintained by maintaining the insertion relative angle θ5 at a different angle from the no-load relative angle θ4. However, it becomes difficult to remove from the respective insertion holes 74 and 75, and the hinge spring 70 can be fixed to the body 11.

  As a result, it is possible to eliminate the need for caulking, which has been conventionally required to fix the hinge spring 70 to the body 11, so that there is no possibility of deformation of the hinge spring 70 and the assembly process can be simplified.

  That is, according to the hinge spring 70, the first insertion hole 74, and the second insertion hole 75 of the third embodiment, the same effects as the hinge spring 16, the first insertion hole 35, and the second insertion hole 36 of the first embodiment are obtained. It is done.

(Fourth embodiment)
The first insertion hole 35 and the second insertion hole 80 according to the fourth embodiment will be described.
As shown in FIGS. 17A and 17B, in the first insertion hole 35 and the second insertion hole 80 of the fourth embodiment, the first insertion hole 35 is inclined at an inclination angle θ2 as in the first embodiment. The second insertion hole 80 is formed at an angle θ5 substantially orthogonal to the hinge spring body 31.

  As described above, the first insertion hole 35 and the first insertion hole 32 inserted into the first insertion hole 35 and the second insertion hole 80 and the first insertion hole 35 are formed in an inclined shape with an inclination angle θ2 as in the first embodiment. The two insertion pieces 33 are difficult to be removed from the insertion holes 35 and 80, and the hinge spring 16 can be fixed to the body 11.

  As a result, it is possible to eliminate the need for caulking, which is conventionally required to fix the hinge spring 16 to the body 11, so that there is no possibility of deformation of the hinge spring 16, and the assembly process can be simplified.

  That is, according to the first insertion hole 35 and the second insertion hole 80 of the fourth embodiment, the same effect as the first insertion hole 35 and the second insertion hole 36 of the first embodiment can be obtained.

(Fifth embodiment)
A spring member 90 according to the fifth embodiment will be described.
As shown in FIGS. 18A and 18B, in the spring member 90 of the fifth embodiment, the second member 92 is upward from the end of the first member 41 toward the connecting member 18 in the initial shape. It is formed in a curved shape, and other shapes are the same as those of the spring member 21 of the first embodiment.
In the second member 92, the upper part 92 a of the second member 92 is normally in contact with the connecting member 18 (when not energized), and is adsorbed by the adjusting member 13 when energized, and the upper part 92 a is separated from the connecting member 18.

According to the spring member 90 of the fifth embodiment, friction can be generated between the upper part 92a and the connecting member 18 by bringing the upper part 92a of the second member 92 into contact with the connecting member 18 normally (when no power is supplied). it can.
Thereby, it is possible to prevent the connection member 18 from moving unintentionally due to inertia by friction and prevent malfunction due to vibration, impact, or the like.

On the other hand, the second member 92 is attracted to the adjustment member 13 during energization, and the upper portion 92 a of the second member 92 is separated from the connecting member 18.
Thus, during energization, the upper part 92a of the second member 92 can be separated from the connecting member 18 so as not to hinder the operation of the connecting member 18.

  That is, according to the spring member 90 of the fifth embodiment, the same effect as the spring member 21 of the first embodiment can be obtained.

In addition, the electromagnetic relay 10 which concerns on this invention is not limited to 1st Embodiment-5th Embodiment mentioned above, A change, improvement, etc. are possible suitably.
For example, in the first to fifth embodiments, the example in which the contact surface 13a of the adjustment member 13 is bent and integrally formed has been described. However, the present invention is not limited thereto, and the contact surface 13a of the adjustment member 13 is a separate member. It is also possible to form.

  Further, the iron core 12, the adjustment member 13, the contact surface 13a, the bobbin 14, the conductive coil 15, the hinge spring 16, the armature 17, the connecting member 18, the contact mechanism 19, and the iron core body 23 shown in the first to fifth embodiments. The shape and configuration of the iron core yoke 24 and the like are not limited to those illustrated, but can be changed as appropriate.

DESCRIPTION OF SYMBOLS 10 Electromagnetic relay 12 Iron core 13 Adjustment member 13a Contact surface 14 Bobbin 15 Conductive coil 16 Hinge spring 17 Armature 18 Connection member 19 Contact mechanism 23 Iron core main body 23b The other end part of an iron core main body (end part of an iron core main body)
24 Iron core relay

Claims (1)

An iron core in which an iron core body and an iron core yoke are connected in a substantially L shape;
A bobbin covering the iron core body and wound with a conductive coil;
An armature that is connected to the iron core yoke and is moved close to and away from the iron core body by a hinge spring;
An electromagnetic relay comprising a contact mechanism coupled to the armature via a coupling member,
An adjustment member provided at an end of the iron core body;
The adjustment member extends in a direction intersecting the longitudinal direction of the core body, and a contact surface substantially parallel to the longitudinal direction of the core body is provided.
An electromagnetic relay in which the contact is close to and away from the contact surface.

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