JP4313524B2 - Electromagnetic relay - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electromagnetic relay.
[0002]
[Prior art]
The demands on safety measures such as prevention of electric shock accidents in electrical equipment are becoming stricter year by year, and this is also true for electromagnetic relays that are used in such electrical equipment.
[0003]
In an electromagnetic relay, it is required to secure electrical insulation (hereinafter simply referred to as insulation) between an electromagnet portion and a contact portion. For example, VDE0631, which is a safety standard of the German Electrical Engineers Association, and Europe In VDE0700, which is a safety standard, it is required to secure a predetermined space insulation distance and creepage insulation distance of 6 mm or more or 8 mm or more.
[0004]
On the other hand, there is a strict demand for miniaturization of electrical equipment, and in the same way, miniaturization to the limit is also required for electromagnetic relays.
[0005]
In order to satisfy the demand for downsizing of the latter electromagnetic relay, various devices have been devised such as downsizing each component to be used or reducing the thickness of the insulator. For example, a normal electromagnetic relay has a structure in which each terminal hangs from the lower part of the main body and engages with the board and is fixed to the board by soldering or the like, and a space is formed between the electromagnetic relay and the board. Therefore, there is a problem that a projecting portion called a stand-off portion is provided around the electromagnetic relay, and the height of the electromagnetic relay arranged on the substrate is increased. In order to remedy this problem, as shown in FIG. 9, the case of the case covering the main body by bending the tip of the terminal 42 hanging from the lower portion of the main body of the electromagnetic relay 40 (not shown in FIG. 9, see FIG. 1). It is performed to extend horizontally from the side surface, and further bend the tip to extend downward. In this case, a stand-off portion for forming a space between the electromagnetic relay 40 and the substrate 44 is not provided, and the electromagnetic relay 40 is reduced in height and reduced in size.
[0006]
However, since these measures are also limited, it is required to use the space inside the apparatus, and it is inevitable to provide the electromagnet part and the contact part close to each other. In order to secure the former insulation distance in the state where the electromagnet part and the contact part are provided close to each other in this way, for example, a molded insulating wall is provided between the electromagnet part and the contact part to block the space. Alternatively, a device has been devised such as providing unevenness on the insulating portion to increase the creeping insulation distance.
[0007]
Two examples of such a conventional electromagnetic relay will be described below.
[0008]
A first conventional electromagnetic relay 1 shown in FIGS. 1 to 5 includes an electromagnet portion 3 and a contact portion 4 fixed to a base block 2. The electromagnet portion 3 and the contact portion 4 are accommodated in the case 5. Here, FIG. 1 is a perspective view of the electromagnetic relay 1 with the case 5 removed, FIG. 2 is an exploded perspective view of the electromagnet portion 3 and the contact portion 4, and FIG. 4 is a cross-sectional view taken along line III-III, FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3 of the electromagnetic relay 1, and FIG. 5 is a cross-sectional view taken along line VV in FIG.
[0009]
The electromagnet portion 3 includes an iron core 16, a coil 6 wound around the iron core 16, a yoke 7 fixed to the lower portion of the iron core 16, and a yoke spring 8 fixed to the yoke 7 on one side of the iron core 16. And an armature 9 provided oppositely. Moreover, it has the two coil terminals 10a and 10b which are connected to the both ends of the coil 6, and are hung down and connected to the board | substrate which is not illustrated.
[0010]
The contact part 4 has a fixed contact 11a at one end, a fixed contact spring 11 having a terminal 11b connected to a substrate (not shown) at the other end, a movable contact 12a at one end, and a substrate (not shown) at the other end. And a movable contact spring 12 having a terminal 12b to be connected. A pair of fixed contact springs may be provided with a movable contact spring interposed therebetween, as shown in a second conventional example described later.
[0011]
A contact drive card 13 is provided by bridging and locking between the armature 9 and the movable contact spring 12.
[0012]
When the electromagnetic relay is used, the movable contact 12a is displaced via the contact drive card 13 in accordance with the operation of the armature 9, and is detachably contacted with the fixed contact 11a.
[0013]
The base block 2 is formed of an insulating material. The base block 2 further includes a crank-shaped insulating wall 14 provided between the electromagnet portion 3 and the contact portion 4, an upper portion on one side of the electromagnet portion 3 connected to the insulating wall 14, and one of the contact portions 4. It has a wide L-shaped insulating wall extending portion 15 provided over the entire side. Therefore, the coil 6 of the electromagnet portion 3 has one vertical side surface (s1 in FIG. 2) in the longitudinal direction and the upper and lower horizontal planes (s2, s3 in FIG. 2) connected to the vertical side surface (s1) as the insulating wall 14 or the base. The vertical side surface (s4 in FIG. 2) covered with the block 2 and facing the contact portion 4 is also covered with the insulating wall 14, and the other vertical side surface (s5 in FIG. 2) and the armature arrangement side ( In FIG. 2, only s6) is exposed.
[0014]
On the other hand, on the inner side of the upper surface of the case 5, a hanging insulating wall (uneven portion) 17 protruding downward is extended in the longitudinal direction of the case 5.
[0015]
In the electromagnetic relay 1 configured as described above, the creeping insulation distance between the electromagnet portion 3 and the contact portion 4 is movable with respect to the point a on the exposed vertical side surface (s5) of the coil 6 in FIGS. It is defined by the length of the path (p in FIG. 3) between the contact spring 12 and the point b and along the insulating wall extension 15 and the hanging insulating wall 17. That is, m1 + m2 + m3 + m4 is the creepage insulation distance, and this value is designed to satisfy the safety standard.
[0016]
A basic configuration of the electromagnetic relay 20 of the second conventional example shown in FIGS. 6 to 8 is the same as that of the electromagnetic relay 1 of the first conventional example. Therefore, in the electromagnetic relay 20, the same components as those of the electromagnetic relay 1 are denoted by the same reference numerals, and redundant description is omitted. 6 is a perspective view of the electromagnetic relay 20 with the case 5 removed, FIG. 7 is a cross-sectional view of the electromagnetic relay 1 taken along the line VII-VII in FIG. 1, and FIG. It is sectional drawing on the middle VIII-VIII line.
[0017]
The electromagnet portion 21 is different from the electromagnetic relay 1 in that the coil 6 is surrounded by an armature 22 formed in a frame shape and is substantially entirely exposed without being covered with an insulating portion. Further, the contact drive card is formed as an insulator (contact drive card) 31 molded between the armature 22 and the contact drive card. The contact portion 24 is also different from the electromagnetic relay 1 in that it has three contact springs, a break contact spring 25, a make contact spring 26 and a movable contact spring 27.
[0018]
In the electromagnetic relay 20, an insulating uneven portion 28 is formed in the insulator 31 and a base block recessed portion 29 is formed in the base block 2 in order to secure an insulating distance between the electromagnet portion 21 and the contact portion 24. Furthermore, a case uneven portion 30 is formed inside the upper surface of the case 5.
[0019]
In the electromagnetic relay 20 configured as described above, the creeping insulation distance between the electromagnet portion 3 and the contact portion 4 is the vertical side surface of the contact portion 24 of the armature 22 connected to the coil 6 in FIGS. The length of the path (q in FIG. 37) between the point c of (s7 in FIG. 8) and the point d of the movable contact spring 27 and along the card concave / convex portion 28, base concave portion 29 and case concave / convex portion 30. Defined by That is, n1 + n2 + n3 + n4 + n5 + n6 + n7 is a creeping insulation distance, and this value is designed to satisfy the safety standard.
[0020]
[Problems to be solved by the invention]
However, the electromagnetic relays 1 and 20 of the first and second conventional examples described above both perform complicated processing such as providing an insulating wall or forming an uneven portion, and narrow the space inside the device. In spite of the fact that the downsizing of the device is substantially sacrificed, in order to secure a predetermined insulation distance, the actual size of the device must be increased to some extent. In particular, in the case of the electromagnetic relay 20 of the second conventional example, since the formed uneven portion has a fitting structure with other members, high dimensional accuracy is required and dimensional changes occur over time. Dimensional stability is required so as not to occur. Such high dimensional accuracy is particularly required for the movable contact drive card (insulator) 31.
[0021]
In addition, as described above, as one means for satisfying the demand for miniaturization of the electromagnetic relay, the tip of the terminal hanging from the lower part of the main body is bent and extended horizontally from the side surface of the case covering the main body, and the tip is further extended. The electromagnetic relay is reduced in height by being bent and extended downward. In this case, the terminal 42 is soldered as shown in FIG. 9 (part A in FIG. 9). However, the electromagnetic relay 40 is not necessarily stably fixed to the substrate. For example, when the electromagnetic relay 40 vibrates, there is a problem that the terminal 42 is broken. At this time, as shown in FIG. 9, the part opposite to the part where the terminal 42 of the electromagnetic relay 40 is provided is joined using an adhesive (part B in FIG. 9). In some cases, it is necessary to perform the bonding work together with the soldering work, which complicates the work, and there is a possibility that the electromagnetic relay 40 is not necessarily stably fixed to the substrate 44 even by the bonding.
[0022]
The present invention has been made in view of the above problems, and an object of the present invention is to provide an electromagnetic relay capable of realizing further downsizing of the apparatus while ensuring a predetermined insulation distance.
[0023]
[Means for Solving the Problems]
  The electromagnetic relay according to the present invention is:A base block;
  An electromagnet portion fixed to the base block and wound around an iron coreAn electromagnet having a coil;
  An armature provided on the electromagnet portion and disposed on one end side in the longitudinal direction of the iron core,An armature driven by energization of the coil of the electromagnet part;
  A contact drive card connected to the armature and disposed above the electromagnet part;
  A contact portion fixed to the base block,A fixed contact spring having a fixed contact, and a movable contact spring having a movable contact that is displaced according to the operation of the armature via the contact drive card and detachably contacts the fixed contact;On the other end side in the longitudinal direction of the iron coreThe arranged contact part,
  One end portion that is formed on the base block and covers the upper surface side of the electromagnet portion, one side surface side, and the other end portion side facing the contact portion, and facing the other side surface side of the electromagnet portion and the armature An insulating wall with a side exposed, the insulating wall on the upper surface side being provided between the electromagnet portion and the contact drive cardAn insulating wall,
  Provided to be connected to the insulating wall;On the other side of the contact drive card and the contact portionAn opposing L-shaped insulating wall extension,
  In an electromagnetic relay having
  An upper surface insulating wall that is formed integrally with the insulating wall extending portion perpendicular to the insulating wall extending portion and provided in parallel with the contact driving card on the contact portion and the contact driving card. When,
  A side surface insulating wall formed integrally with the insulating wall extending portion and the upper surface insulating wall and perpendicular to the insulating wall extending portion and the upper surface insulating wall and provided outside the contact portion. (Invention according to claim 1).
[0024]
  This makes the aboveTop insulating wall and side insulating wallCompared with the conventional one that is not providedTop insulating wall and side insulating wallSince the insulation distance can be increased by a predetermined distance along the line, it is possible to obtain a miniaturized electromagnetic relay having a small external dimension necessary for securing the same insulation distance as that of the conventional one.
[0026]
  Further, in the electromagnetic relay according to the present invention, each of the contact terminals connected to the fixed contact spring and the movable contact spring and the coil terminal connected to the coil are refracted at right angles to the connection direction, and the electromagnet Part and the side wall of the housing containing the contact part, and further refracted at a right angle and extended in the connection direction (claims)2Invention), a so-called low-profile electromagnetic relay having a low height from the surface of the substrate to be mounted is obtained as compared with the conventional one in which the contact terminals or the like are suspended from the fixed contact spring or the like. be able to.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of an electromagnetic relay according to the present invention (hereinafter referred to as this embodiment) will be described below with reference to the drawings.
[0032]
First, an electromagnetic relay according to a first example of the present embodiment will be described below with reference to FIGS. 10 is a perspective view of the electromagnetic relay 100 with the case (housing) removed, FIG. 11 is a plan view of the electromagnet portion 3 and the contact portion 4, and FIG. 12 is a front view of the electromagnetic relay 100. FIG. 13 is a rear view of the electromagnetic relay 100 (a diagram viewed from the other side of the paper surface in FIG. 10).
[0033]
The electromagnetic relay 100 shown in FIGS. 10 to 13 is substantially the same as the electromagnetic relay 1 of the first conventional example described above, including the insulating wall 14 and the insulating wall extending portion 15. However, in the electromagnetic relay 100 shown in FIG. 10 reversed left and right with respect to the electromagnetic relay 1 shown in FIG. 1, the insulating wall (insulator) 14 and the insulating wall extending portion (insulating part) 15 are provided in the case of the electromagnetic relay 1. It is provided on the opposite side. Therefore, the coil 6 is in a state where the surface on the back side of the paper in FIG. 10 is exposed from the insulating material (exposed on the front side in FIG. 12). In FIG. 10, the insulating wall extension 15 is not hidden behind the upper surface insulating wall 104. The configuration of the contact part is the same as that of the contact part 24 of the electromagnetic relay 20 of the second conventional example. For this reason, about the same component as the electromagnetic relay 1 and the electromagnetic relay 20, the same referential mark as the electromagnetic relay 1 and the electromagnetic relay 20 is attached | subjected, and the overlapping description is abbreviate | omitted. In addition, although the illustration of the case is omitted, the electromagnetic relay can be provided with the case 5 of the electromagnetic relay 1, for example.
[0034]
The electromagnetic relay 100 has a base block 2, an electromagnet part 3, and a contact part 24.
[0035]
The electromagnet unit 3 includes an iron core 16, a coil 6, a yoke 7, and an armature 9. Moreover, it has two coil terminals 10a and 10b which are connected to both ends of the coil 6 and which are suspended downward and connected to the substrate 102.
[0036]
The contact portion 24 includes three contact springs, a break contact spring 25, a make contact spring 26, and a movable contact spring 27, and includes terminals 25 b, 26 b, and 27 b that hang downward and are connected to the substrate 102. In FIG. 12, reference numeral 26a indicates a make contact, reference numeral 27a indicates a movable contact, and reference numeral 28a indicates a break contact.
[0037]
The armature 9 and the movable contact spring 27 are bridged and locked to provide a contact drive card 13.
[0038]
As described above, the electromagnetic relay 100 includes the insulating wall 14 and the insulating wall extending portion 15 in the same manner as the electromagnetic relay 1 of the first conventional example.
[0039]
The electromagnetic relay 100 further has an upper surface insulating wall 104 and a vertical surface insulating wall (side insulating wall) 106.
[0040]
The upper surface insulating wall 104 is provided above the contact portion 24 in FIG. The upper surface insulating wall 104 is provided on the upper portion of the contact driving card 13 in parallel with the contact driving card 13 and is integrally formed orthogonally to the insulating wall extending portion 15.
[0041]
In FIG. 10, the vertical surface insulating wall 106 is provided on the front side surface of the contact portion 24, that is, on the side opposite to the side facing the electromagnet portion 3. The vertical surface insulating wall 106 is integrally formed orthogonal to the insulating wall extending portion 15 and the upper surface insulating wall 104.
[0042]
In the electromagnetic relay 100 configured as described above, the creeping insulation distance between the electromagnet portion 3 and the contact portion 24 is such that the point A on the exposed surface of the coil 6 and the point B on the movable contact spring 27 in FIGS. It is defined by the length of the path (in FIG. 11) P between the points and along the insulating wall extension 15 and the upper surface insulating wall 104. That is, L1 + L2 + L3 is the creeping insulation distance, and this value is designed to satisfy the safety standard.
[0043]
The path P having the creeping insulation distance (L1 + L2 + L3) is the path p and n1 + n2 + n3 + n4 + n5 + n6 of the first conventional example having the creeping insulation distance of m1 + m2 + m3 + m4. This route is longer than the route q of the second conventional example having a creepage insulation distance of + n7. Accordingly, the electromagnetic relay 100 has a smaller external dimension than that of the conventional one in order to ensure the same insulation distance as that of the conventional one.
[0044]
Here, as a modification of the electromagnetic relay 100, only the upper surface insulating wall 104 and the vertical surface insulating wall 106 are not provided are shown in FIGS. 14 to 17.
[0045]
In the electromagnetic relay 108 shown in FIGS. 14 to 17, the creeping insulation distance between the electromagnet portion 3 and the contact portion 24 is between point C on the exposed surface of the coil 6 and point D on the movable contact spring 27. , Defined by the length M1 + M2 + M3 + M4 of the path (in FIG. 16) Q along the insulating wall extension 15 and the upper surface insulating wall 104. In FIG. 15, some members are not shown.
[0046]
The path Q having the creeping insulation distance of M1 + M2 + M3 + M4 is shorter than the path P, but longer than the path p of the first conventional example and the path q of the second conventional example. Accordingly, the electromagnetic relay 108 has a smaller external dimension than that of the conventional one in order to ensure the same insulation distance as that of the conventional one.
[0047]
Next, an electromagnetic relay according to a second example of the present embodiment will be described below with reference to FIGS.
[0048]
The basic configuration of the electromagnetic relay 112 shown in FIGS. 18 to 20 is the same as that of the electromagnetic relay 100 according to the first example of the present embodiment, for example. Therefore, illustration and description of the basic configuration of the electromagnetic relay 112 are omitted, and reference numerals of corresponding members of the electromagnetic relay 100 are used for members necessary for the description. Here, FIG. 18 is a front view of the electromagnetic relay 112, FIG. 19 is a plan view of the electromagnetic relay 112, and FIG. 20 is a side view of the electromagnetic relay 112. In each figure, reference numeral 113 indicates a substrate on which the electromagnetic relay 112 is mounted.
[0049]
The electromagnetic relay 112 is different from the electromagnetic relay 100 in the shape of each terminal.
[0050]
The electromagnetic relay 112 includes coil terminals 114 and 116 connected to the coil 6, a break contact terminal 118 extending to the break contact spring 25, a make contact terminal 120 extending to the make contact spring 26, and a movable contact spring 27. And a movable contact terminal 122 extending to the center.
[0051]
The coil terminals 114 and 116, the break contact terminal 118, the make contact terminal 120, and the movable contact terminal 122 are all the coil 6, the break contact spring 25, the make contact spring 26, and the movable contact that extend in the vertical direction in FIG. 90 ° (perpendicular) is refracted from the spring 27 and extends in the front direction of the paper to protrude from the case 5, and is also refracted 90 ° in the vertical direction, that is, the coil 6, the break contact spring 25, and the make contact spring 26. In addition, it is formed so as to hang down and extend in the connecting direction of the movable contact spring 27.
[0052]
The electromagnetic relay 112 according to the second example of the present embodiment configured as described above is from the surface of the substrate to be mounted as compared with the conventional one in which each terminal is suspended and connected from a fixed contact spring or the like. The height of the so-called is low.
[0053]
Here, the modification of the electromagnetic relay 112 which concerns on the 2nd example of this Embodiment is demonstrated with reference to FIGS. 21-29. The electromagnetic relays of the first to fifth modifications described below have substantially the same configuration as that of the electromagnetic relay 112 according to the second example of the present embodiment, but are further discarded at positions facing each terminal. It differs from the electromagnetic relay 112 in that it has a terminal (support).
[0054]
First, the electromagnetic relay 124 of the first modified example shown in FIGS. 21 to 23 includes the discard terminals (supports) 126 and 128 and the terminals 114, 116, 118, 120, and 122 of the case (housing) 5. As in the case of each terminal 114, 116, 118, 120, 122, it extends from the portion close to both ends of the side surface 5b opposite to the protruding side surface 5a and then refracts by 90 ° (perpendicular). It extends downward. In this case, the disposal terminals (supports) 126 and 128 are fixed to the main body 130 whose one end is covered with the case 5 by a mold or the like.
[0055]
As in the case of the electromagnetic relay 112, the electromagnetic relay 124 according to the first modification configured as described above has a low height from the surface of the substrate to be mounted, so-called low profile, Furthermore, because the terminals are disposed on the opposite side of the case to face each terminal, there is a risk of deformation or breakage even if a rotational torque is applied to each terminal due to external force after mounting on the board. There is no.
[0056]
Next, the electromagnetic relay 124a of the second modified example shown in FIGS. 24 to 26 is different from the first modified example in that the discarded terminal is detachably attached to the case.
[0057]
The electromagnetic relay 124a has a recess 150 formed on the side surface opposite to the side surface on which the terminals of the case 5a (only the coil terminal 114 is shown in FIGS. 24 and 25). The recess 150 has a horizontal opening having alternating wide portions 150a and narrow portions 150b, and a vertical opening having open ends on both sides of the opening. The case 5a having such a recess 150 is formed, for example, by resin molding using a mold made up of an upper and lower mold that moves up and down and a slide mold that moves horizontally. Then, for example, by pushing the discard terminal 152 with fingers, the connecting portion 152a of the discard terminal 152 formed in a U-shape is engaged with the recess 150, and the hanging portions 152b and 152c at both ends face the hanging portion of each terminal. And droops. At this time, the connecting portion 152 a of the discard terminal 152 is held by the narrow portion 150 b of the recess 150.
[0058]
In the mounting state on the substrate 144 shown in FIG. 26, each terminal (only the coil terminal 114 is shown) and the discard terminal 152 are soldered to the substrate 144 (C portion in FIG. 26).
[0059]
The electromagnetic relay 124a according to the second modified example configured as described above has an especially simple structure, and the support can be detachably attached to the case, and the electromagnetic relay can be easily and easily installed. It can be securely fixed to the substrate.
[0060]
In this case, in order to securely fix the discarded terminal to the recessed portion, for example, the discarded terminal may be press-fitted into the recessed portion using a jig, or the recessed portion of the case may be pressed with the discarded terminal engaged. It may be caulked by heat, or the discarded terminal and the case may be bonded using an adhesive.
[0061]
Next, the third to fifth modifications of FIGS. 27 to 29 are common to the second modification in that the discard terminal is detachably attached to the case.
[0062]
In the electromagnetic relay 124b according to the third modification shown in FIG. 27, one end of the L-shaped discard terminal 152a is engaged with the recess 154 of the case 5a.
[0063]
In the electromagnetic relay 124b, the structure for attaching the discarded terminal to the case is further simplified.
[0064]
In the electromagnetic relay 124c according to the fourth modification shown in FIG. 28, the connecting portion of the Kanji mountain-shaped discard terminal 152b is engaged with the recess 156 of the case 5a.
[0065]
Since the electromagnetic relay 124c has three disposal terminals, the electromagnetic relay is more securely fixed to the substrate.
[0066]
The electromagnetic relay 124d according to the fifth modification shown in FIG. 29 is similar to the second modification, but the recess 158 formed in the case 5a is open at the top. The connecting portion of the discard terminal 152 is engaged with the concave portion 158 of the case 5a by being bonded with an adhesive.
[0067]
Since the electromagnetic relay 124d can be molded using only the upper and lower molds that move up and down the case having the recess, the case can be easily manufactured.
[0068]
In the electromagnetic relay according to each modification described above, the structure of the main body of the electromagnetic relay to which the discard terminal is attached is not limited to the first and second examples of the present embodiment, but other general structures. It may be a thing.
[0069]
In addition, in the electromagnetic relay of each embodiment described above, if an insulating material such as an insulating wall is used, PBT (polybutylene terephthalate) containing inorganic filler, crystalline polystyrene, 9T nylon (registered trademark name of polyamide resin) or the like is used. In addition, the thickness of the insulating wall and the like can be further reduced, whereby the electromagnetic relay can be further reduced in size.
[0070]
【The invention's effect】
  Claim1According to such an electromagnetic relay,A base block and an electromagnet portion fixed to the base block, wound around an iron coreAn electromagnet having a coil;An armature provided on the electromagnet portion and disposed on one end side in the longitudinal direction of the iron core,An armature driven by energization of the coil of the electromagnet part, a contact drive card connected to the armature and disposed on the upper side of the electromagnet part;A contact portion fixed to the base block,A fixed contact spring having a fixed contact, and a movable contact spring having a movable contact that is displaced according to the operation of the armature via the contact drive card and detachably contacts the fixed contact;On the other end side in the longitudinal direction of the iron coreThe arranged contact part,One end portion that is formed on the base block and covers the upper surface side of the electromagnet portion, one side surface side, and the other end portion side facing the contact portion, and facing the other side surface side of the electromagnet portion and the armature An insulating wall with a side exposed, the insulating wall on the upper surface side being provided between the electromagnet portion and the contact drive cardAn insulating wall and connected to the insulating wall;On the other side of the contact drive card and the contact portionAn electromagnetic relay having an opposing L-shaped insulating wall extending portion, and formed integrally with the insulating wall extending portion so as to be orthogonal to the insulating wall extending portion, and the contact portion and the An upper surface insulating wall provided in parallel with the contact driving card on an upper portion of the contact driving card, and the insulating wall extending portion and the upper surface insulating wall orthogonal to the insulating wall extending portion and the upper surface insulating wall. And a small-sized electromagnetic relay having a small outer dimension necessary for securing the same insulation distance as the conventional one is obtained. be able to.
[0071]
  Claims2According to the electromagnetic relay according to the above, each terminal is refracted at right angles to the connection direction of the contact spring and the like, and is extended from the side wall of the housing containing the electromagnet portion and the contact portion, and further refracted at right angles and connected Since it extends in the direction, it is possible to obtain a so-called low-profile electromagnetic relay having a lower height from the surface of the substrate to be mounted than the conventional one.
[Brief description of the drawings]
FIG. 1 is a perspective view of a first conventional electromagnetic relay with a case removed.
FIG. 2 is an exploded exploded perspective view of an electromagnet part and a contact part of an electromagnetic relay of a first conventional example.
3 is a cross-sectional view of the first conventional electromagnetic relay taken along line III-III in FIG. 1. FIG.
4 is a cross-sectional view taken along the line IV-IV in FIG. 3 of the electromagnetic relay of the first conventional example.
5 is a cross-sectional view taken along the line VV in FIG. 3 of the electromagnetic relay of the first conventional example.
FIG. 6 is a perspective view of the second conventional electromagnetic relay with the case removed.
FIG. 7 is a plan view of an electromagnet part and a contact part of an electromagnetic relay of a second conventional example.
8 is a cross-sectional view of the electromagnetic relay of the second conventional example on the line VIII-VIII in FIG.
FIG. 9 is a side view of an electromagnetic relay for explaining a conventional low-profile structure.
FIG. 10 is a perspective view of the electromagnetic relay according to the first example of the present embodiment with the case removed.
FIG. 11 is a plan view of an electromagnet part and a contact part of the electromagnetic relay of the first example of the present embodiment.
FIG. 12 is a front view of an electromagnet part and a contact part of the electromagnetic relay of the first example of the present embodiment.
FIG. 13 is a rear view of the electromagnet part and the contact part of the electromagnetic relay of the first example of the present embodiment.
FIG. 14 is a perspective view in a state where a case of a modification of the electromagnetic relay of the first example of the present embodiment is removed.
FIG. 15 is a plan view of an electromagnet part and a contact part of a modification of the electromagnetic relay of the first example of the present embodiment.
FIG. 16 is a front view of an electromagnet part and a contact part of a modification of the electromagnetic relay of the first example of the present embodiment;
FIG. 17 is a rear view of an electromagnet part and a contact part of a modification of the electromagnetic relay of the first example of the present embodiment.
FIG. 18 is a front view of an electromagnetic relay of a second example of the present embodiment.
FIG. 19 is a plan view of an electromagnetic relay of a second example of the present embodiment.
FIG. 20 is a side view of the electromagnetic relay of the second example of the present embodiment.
FIG. 21 is a front view of a first modification of the electromagnetic relay of the second example of the present embodiment;
FIG. 22 is a plan view of a first modification of the electromagnetic relay of the second example of the present embodiment.
FIG. 23 is a side view of a first modification of the electromagnetic relay of the second example of the present embodiment.
FIG. 24 is an exploded perspective view of a second modification of the electromagnetic relay of the second example of the present embodiment.
FIG. 25 is a perspective view of a second modification of the electromagnetic relay of the second example of the present embodiment.
FIG. 26 is a side view of a second modification of the electromagnetic relay of the second example of the present embodiment.
FIG. 27 is a side view of a third modification of the electromagnetic relay of the second example of the present embodiment.
FIG. 28 is a side view of a fourth modification of the electromagnetic relay of the second example of the present embodiment.
FIG. 29 is a side view of a fifth modification of the electromagnetic relay of the second example of the present embodiment.
[Explanation of symbols]
2 Base block
3 Electromagnet part
5, 5a case
6 coils
9 Armature
10a, 10b, 114, 116 Coil terminal
13 Contact drive card
14 Insulating wall
15 Insulating wall extension
16 Iron core
24 Contact point
25 Break contact spring
25a Break contact
25b, 26b, 27b terminals
26 Make contact spring
26a Make contact
27 Movable contact spring
27a Movable contact
100, 108, 112, 124, 124a, 124b, 124c, 124d electromagnetic relay
102, 113 substrate
104 Upper surface insulation wall
106 Vertical insulation wall
118 Break contact terminal
120 Make contact terminals
122 Movable contact terminal
126, 128, 152, 152a, 152b, 152c Discard terminal
130 body
144 substrate

Claims (2)

A base block;
An electromagnet part fixed to the base block, the electromagnet part having a coil wound around an iron core ;
An armature provided on the electromagnet portion and disposed on one end side in the longitudinal direction of the iron core, the armature being driven by energizing the coil of the electromagnet portion;
A contact drive card connected to the armature and disposed above the electromagnet part;
A contact portion fixed to the base block, which is movable according to movement of the armature through the contact drive card and a fixed contact spring having a fixed contact, and detachably contacted with the fixed contact A movable contact spring having a contact, and a contact portion disposed on the other end side in the longitudinal direction of the iron core ;
One end portion that is formed on the base block and covers the upper surface side of the electromagnet portion, one side surface side, and the other end portion side facing the contact portion, and facing the other side surface side of the electromagnet portion and the armature An insulating wall with an exposed side, the insulating wall on the upper surface side being provided between the electromagnet part and the contact driving card ;
An L-shaped insulating wall extending part that is connected to the insulating wall and faces the other side of the contact driving card and the contact part ;
In an electromagnetic relay having
An upper surface insulating wall that is formed integrally with the insulating wall extending portion perpendicular to the insulating wall extending portion and provided in parallel with the contact driving card on the contact portion and the contact driving card. When,
A side surface insulating wall formed integrally with the insulating wall extending portion and the upper surface insulating wall and perpendicular to the insulating wall extending portion and the upper surface insulating wall and provided outside the contact portion. An electromagnetic relay comprising:   A housing in which each of the contact terminals connected to the fixed contact spring and the movable contact spring and the coil terminal connected to the coil are refracted at right angles to the connection direction to accommodate the electromagnet part and the contact part. 2. The electromagnetic relay according to claim 1, wherein the electromagnetic relay is extended from the side wall and further bent in a right angle and extended in the connecting direction.

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