JP2015103444A - Contact device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a contact device in which an arc generated between stationary contacts and movable contacts is less likely to contact with a housing container.SOLUTION: A contact block 1 includes: stationary terminals 11 having stationary contacts 111; and a movable contact 12 having movable contacts 121 and moving between a first position in which the movable contacts 121 contact with the stationary contacts 111, and a second position in which the movable contacts 121 are away from the stationary contacts 111. A housing container 18 is formed by joining a first member 13 and a second member 17 together and forms a housing space for housing the contact block 1. A pair of standing wall parts 152A, 152A is disposed in the housing space of the housing container 18 and the wall parts are provided at positions which are on both lateral-direction sides of the contact block 1 and which face the joint part of the first member 13 with the second member 17. A connection part connects between the pair of standing wall parts 152A, 152A and generates elastic force to press the pair of standing wall parts 152A, 152A toward the connection part.

Description

  The present invention relates to a contact device.

  Conventionally, contact devices used for power load relays, electromagnetic switches, and the like have been provided (see, for example, Patent Document 1).

  The contact device described in Patent Document 1 includes a sealing container made of an insulating material, a fixed terminal having a fixed contact and hermetically bonded to the sealing container, and a movable contact having a movable contact contacting and leaving the fixed contact. With. Further, this contact device has a bottomed structure in which a movable iron core that is movable so that the movable contact is in contact with and away from the fixed contact is housed on the bottom side, and a fixed iron core that is positioned to face the movable iron core is housed on the opening side. A cylinder part and a 1st joining member to which a fixed iron core is fixed and airtightly joined to a bottomed cylinder part are provided.

  The contact device further includes a second bonding member that forms an airtight space by being hermetically bonded to the sealing container and the first bonding member, and an arc generated between the fixed contact and the movable contact is And an insulating member for preventing contact with a joint portion between the second joint member. The insulating member has a standing piece that comes into contact with the inner surface of the sealed container in a state of being accommodated in the sealed container, and the arc comes into contact with the joint portion when the standing piece contacts the inner surface of the sealed container Can be suppressed.

Japanese Patent Laid-Open No. 10-326530

  By the way, in the contact device shown in Patent Document 1 described above, a gap may be generated between the sealing container and the standing piece of the insulating member due to, for example, a dimensional error in manufacturing the sealing container and the insulating member. In this case, when the voltage applied between the pair of fixed terminals increases, an arc generated between the fixed contact and the movable contact passes through the gap and is a joint portion between the sealing container and the second joint member. And / or contact with the second joining member.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a contact device in which an arc generated between a fixed contact and a movable contact is unlikely to contact the storage container.

  The contact device of the present invention includes a fixed terminal having a fixed contact, and a first position in which the movable contact has contact with the fixed contact and a second position in which the movable contact moves away from the fixed contact. A contact block having a movable contact that moves in the first position, a first member and a second member joined together, a storage container for forming a storage space in which the contact block is stored, and a first container in the storage space. A pair of standing wall portions provided on both sides of the contact block in a direction and at positions facing the joining portions of the first member and the second member, and connecting the pair of standing wall portions toward the joining portion And a connecting portion that generates an elastic force that presses the pair of standing wall portions.

  In this contact device, the pair of standing wall portions protrude from both end portions in the first direction of the connecting portion in a second direction orthogonal to the first direction, and the connecting portion is partly in the first direction. It is preferable that the thickness in the second direction is thinner than the remaining portion and an elastic portion for generating the elastic force is provided.

  Further, in this contact device, the pair of standing wall portions protrude from both end portions in the first direction of the connecting portion in a second direction orthogonal to the first direction, and the connecting portion is one in the first direction. It is also preferable that the portion has an elastic portion that is formed in a corrugated shape by repeating the unevenness in the second direction in the first direction and generates the elastic force.

  Further, in this contact device, the pair of standing wall portions protrude from both end portions in the first direction of the connecting portion in a second direction orthogonal to the first direction, and the connecting portion is one in the first direction. It is also preferable that the part has an elastic part that generates the elastic force because the thickness in the third direction orthogonal to both the first direction and the second direction is thinner than the remaining part.

  Further, in this contact device, the pair of standing wall portions protrude from both end portions in the first direction of the connecting portion in a second direction orthogonal to the first direction, and the connecting portion is one in the first direction. The portion has an elastic portion that is formed into a corrugated plate shape by repeating irregularities in the third direction orthogonal to both the first direction and the second direction in the first direction, and generates the elastic force. Is also preferable.

  In this contact device, it is preferable that the elastic portion is integrally formed of the same material as the remaining portion of the connecting portion.

  In the contact device, the elastic portion is preferably made of a metal material and is integrated with the remaining portion of the connecting portion by insert molding.

  Further, in this contact device, the connecting portion is made of a thermally expandable material in a part in the first direction, and expands in the first direction due to a temperature change in the storage container to generate the elastic force. It is also preferable to have a part.

  In the contact device, it is also preferable that an outer dimension of the pair of standing wall portions in the first direction is larger than an inner dimension of the storage container in the first direction.

  In this contact device, it is also preferable that magnets are disposed outside the storage container and on both sides of the contact block.

  According to the configuration of the present invention, each standing wall portion is pushed toward the joining portion of the first member and the second member by the elastic force applied from the connecting portion, so that a gap between the storage container and each standing wall portion is formed. Can be small. Thereby, there is an effect that it is possible to provide a contact device in which an arc generated between the fixed contact and the movable contact is unlikely to contact the storage container.

An example of the contact device of this embodiment is shown, (a) is a top view, (b) is a side sectional view. An example of the protection member used for the contact apparatus same as the above is shown, (a) is a top view, and (b) is a side sectional view. The other example of the protection member used for the contact apparatus same as the above is shown, (a) is a top view, (b) is a side sectional view. The further another example of the protection member used for the contact apparatus same as the above is shown, (a) is a top view, (b) is a side sectional view. The further another example of the protection member used for the contact apparatus same as the above is shown, (a) is a top view, (b) is a side sectional view. The further another example of the protection member used for the contact apparatus same as the above is shown, (a) is a top view, (b) is a side sectional view. It is a sectional side view which shows another example of the protection member used for the contact apparatus same as the above. (A), (b) is the figure which showed the relationship between a magnet arrangement | positioning and an arc moving direction in sectional drawing which looked at another contact apparatus same as the above from the lower side. An example of the protection member used for another contact device same as the above is shown, (a) is a top view, (b) is an XX sectional view. It is a top view which shows another example of the protection member used for another contact device same as the above.

  Hereinafter, an embodiment of a contact device will be described with reference to FIGS. This contact device is used, for example, for a power load relay or an electromagnetic switch. In the following description, unless otherwise specified, the vertical and horizontal directions are defined in the direction shown in FIG. 1B, and the direction perpendicular to the paper surface in FIG. .

  FIG.1 (b) is sectional drawing which shows an example of the contact apparatus 10 of this embodiment. The contact device 10 includes a contact block 1, an electromagnet block 2, and a storage container 18 in which the contact block 1 is stored.

  The electromagnet block 2 includes a coil bobbin 21 formed in a hollow cylindrical shape by an insulating material, and an electromagnetic coil 22 formed by winding a conductive wire around the coil bobbin 21. The electromagnet block 2 is arranged on the upper side in the cylinder of the coil bobbin 21 and on the lower side in the cylinder of the coil bobbin 21. The electromagnet block 2 is attached to the fixed iron core 23 according to whether or not the electromagnetic coil 22 is energized. And a movable iron core 24 that contacts or moves away from the fixed iron core 23.

  Further, the electromagnet block 2 includes a yoke upper plate 25 and a yoke 26 made of a magnetic metal material, and a return spring 27 that is disposed in a cylinder of the coil bobbin 21 and applies a downward elastic force to the movable iron core 24. The yoke 26 is formed in a U shape by a central piece and opposing pieces so as to surround the electromagnetic coil 22, and forms a magnetic circuit together with the fixed iron core 23, the movable iron core 24 and the yoke upper plate 25. The electromagnet block 2 employs a conventionally well-known configuration, and detailed description thereof is omitted here.

  The contact block 1 includes a pair of fixed terminals 11, 11, a movable contact 12, a contact pressure spring 16, a shaft 14, and a protection member 15A.

  Each fixed terminal 11 is formed in a cylindrical shape from a conductive material (for example, copper), and a fixed contact 111 is integrally provided at the tip (the lower end in FIG. 1B). The fixed contact 111 may be separate from the fixed terminal 11.

  The movable contact 12 is formed of a conductive material (for example, copper) in a rectangular plate shape that is long in the left-right direction, and a pair of movable contacts 121, 121 are integrally provided on the upper surface near both ends in the left-right direction. Located in the container 18. The movable contact 121 may also be a separate body from the movable contact 12.

  The storage container 18 includes a first member 13 formed in a hollow box shape whose lower surface is opened by a heat resistant material (for example, ceramic), and a second member 17 formed in a cylindrical shape whose both ends in the vertical direction are opened. Have. One end of the second member 17 (the upper end in FIG. 1B) is joined to the opening edge of the first member 13 by brazing.

  Further, holes 131, 131 through which the fixed terminal 11 is passed are provided side by side in the left-right direction on the upper surface of the first member 13. Each fixed terminal 11 is passed through the hole 131 in a state in which the flange portion 112 protrudes from the upper surface of the first member 13, and is joined to the first member 13 by, for example, brazing. In addition, the other end part (lower end part in FIG.1 (b)) of the 2nd member 17 is joined to the yoke upper board 25 by welding, and the storage container 18 is sealed. Here, in this embodiment, the storage space is constituted by the space formed by the first member 13, the second member 17, and the yoke upper plate 25.

  The shaft 14 is formed of a nonmagnetic material in the shape of a round bar that is long in the vertical direction. The movable contact 12 is attached to the upper end portion (tip portion), and the movable iron core 24 is attached to the lower end side. The shaft 14 moves in the vertical direction in conjunction with the movement of the movable iron core 24.

  The contact pressure spring 16 is formed in a coil shape, and is arranged in a compressed state between the movable contact 12 and the fixed iron core 23 such that the expansion / contraction direction is the vertical direction. The contact pressure spring 16 gives the movable contact 12 an elastic force in a direction toward the fixed terminal 11 (upward in FIG. 1B).

  As shown in FIG. 2, the protection member 15A has a pair of support plates 151A and 151A and a pair of elastic portions 153A and 153A that connect the pair of support plates 151A and 151A, and is movable in the vertical direction. Arranged between the child 12 and the electromagnet block 2.

  Each support plate 151A is made of a synthetic resin such as plastic and has a bottom wall portion 154A formed in a rectangular plate shape. A standing wall portion 152A protruding upward is integrally provided on the upper surface of the bottom wall portion 154A. It has been. As shown in FIG. 2A, the standing wall portion 152 </ b> A is formed in a U shape so that the shape seen from above is along the inner wall of the storage container 18.

  Each elastic portion 153A is made of an elastic material such as plastic or rubber, and is formed in a rectangular plate shape that is long in the left-right direction. These elastic portions 153A and 153A are integrated with both support plates 151A and 151A by insert molding. By the way, in a state where both the support plates 151A, 151A and both elastic portions 153A, 153A are integrated, a hole 155A for passing the contact pressure spring 16 is formed in the central portion, and the compatible wall portions 152A, 152A are mutually connected. It arrange | positions so that an opening side may face (refer Fig.2 (a)).

  Here, in the present embodiment, the left-right direction in FIG. 2A is the first direction, and the up-down direction in FIG. 2B is the second direction orthogonal to the first direction. And in the state which assembled | attached 15 A of protection members, as shown in FIG.1 (b), it is the both sides of the contact block 1 in a 1st direction (left-right direction in FIG.1 (b)), and the 1st member 13 and 2nd. Each standing wall portion 152A is disposed at a position facing the joining portion of the member 17. In the present embodiment, the connecting portion is configured by the bottom wall portion 154A and the elastic portion 153A of the support plate 151A.

  Next, the operation of the contact device 10 will be described. First, when the electromagnetic coil 22 is not energized, the movable iron core 24 is separated from the fixed iron core 23 by the downward elastic force given from the return spring 27 as shown in FIG. Therefore, the shaft 14 connected to the movable iron core 24 is also at the lower end position, and accordingly, each movable contact 121 of the movable contact 12 is also separated from the corresponding fixed contact 111 of the fixed terminal 11. Here, in this embodiment, the position of the movable contact 12 at this time is the second position.

  When the electromagnetic coil 22 is energized, the movable iron core 24 is attracted to the fixed iron core 23 and moved upward, and the shaft 14 connected to the movable iron core 24 is also moved upward accordingly. When the shaft 14 moves upward, the movable contact 12 also moves upward, and each movable contact 121 comes into contact with the corresponding fixed contact 111.

  At this time, since the contact pressure spring 16 is in a compressed state, the contact pressure of the fixed contact 111 corresponding to each movable contact 121 is increased by the elastic force applied to the movable contact 12. Here, in the present embodiment, the position of the movable contact 12 at this time is the first position.

  When the energization of the electromagnetic coil 22 is stopped, the movable iron core 24 moves downward due to the elastic force applied from the return spring 27, and the shaft 14 connected to the movable iron core 24 also moves downward accordingly. When the shaft 14 moves downward, the movable contact 12 also moves downward, and each movable contact 121 moves away from the corresponding fixed contact 111.

  Here, when each movable contact 121 moves away from the corresponding fixed contact 111 in a state where a current flows between each movable contact 121 and the corresponding fixed contact 111, the gap between the movable contact 121 and the fixed contact 111 is between. An arc is generated. As shown in FIG. 1A, the arc is stretched in the left-right direction by permanent magnets 4, 4 arranged outside the storage container 18 and on both sides in the front-rear direction of the contact block 1. At this time, if there is a gap between the first wall 13 and the standing wall 152A of the protection member 15A disposed in the storage container 18, the arc passes through the gap between the first member 13 and the second member 17. There is a possibility of contact with the joint site.

  Therefore, in the present embodiment, the elastic portions 153A and 153A generate an elastic force that pushes each of the standing wall portions 152A outward (on the side where the first member 13 and the second member 17 are joined). As a result, the gap between each standing wall 152A and the corresponding first member 13 is reduced, and there is an advantage that the arc is less likely to contact the joint portion of the first member 13 and the second member 17.

  In the present embodiment, the outer dimension L2 of the standing wall portions 152A and 152A of the protection member 15A in the left-right direction is larger than the inner dimension L1 of the first member 13 in the left-right direction. 152A can be pressed against the first member 13.

  FIG. 3A and FIG. 3B show another example of the protective member used in the contact device 10 of the present embodiment. The protection member 15B of this example is made of a synthetic resin such as plastic, for example, and is integrally formed by a pair of support plates 151B and 151B and a pair of elastic portions 153B and 153B connecting between the pair of support plates 151B and 151B. Has been.

  Each support plate 151B has a bottom wall portion 154B formed in a rectangular plate shape, and a standing wall portion 152B protruding upward is integrally provided on the upper surface of the bottom wall portion 154B. As shown in FIG. 3A, the standing wall portion 152 </ b> B is formed in a U shape so that the shape seen from above is along the inner wall of the storage container 18.

  Each elastic portion 153B is formed in a rectangular plate shape whose thickness in the vertical direction is thinner than the bottom wall portion 154B of the support plate 151B and is long in the left-right direction. When the protection member 15B is viewed from the upper side, as shown in FIG. 3A, a hole 155B for allowing the contact pressure spring 16 to pass therethrough is provided in the center portion, and the compatible wall portions 152B and 152B are mutually connected. Are arranged so that the opening sides of each face each other.

  Here, in this embodiment, the horizontal direction in FIG. 3A is the first direction, and the vertical direction in FIG. 3B is the second direction orthogonal to the first direction. In this embodiment, the bottom wall portion 154B and the elastic portion 153B of the support plate 151B constitute a connecting portion, and the bottom wall portion 154B constitutes the remaining portion of the connecting portion.

  Also in this example, the elastic portions 153B and 153B generate elastic forces that push the respective standing wall portions 152B outward (joining portions of the first member 13 and the second member 17). And the corresponding first member 13 becomes smaller. As a result, there is an advantage that the arc is unlikely to contact the joint portion of the first member 13 and the second member 17.

  FIG. 4A and FIG. 4B show still another example of the protective member used in the contact device 10 of the present embodiment. The protection member 15C of this example is made of a synthetic resin such as plastic, and is integrally formed by a pair of support plates 151C and 151C and a pair of elastic portions 153C and 153C that connect the pair of support plates 151C and 151C. Has been.

  Each support plate 151 </ b> C has a bottom wall portion 154 </ b> C formed in a rectangular plate shape, and a standing wall portion 152 </ b> C that protrudes upward is integrally provided on the upper surface of the bottom wall portion 154 </ b> C. As shown in FIG. 4A, the standing wall portion 152 </ b> C is formed in a U shape so that the shape seen from above is along the inner wall of the storage container 18.

  Each elastic portion 153C is thinner in the vertical direction than the bottom wall portion 154C of the support plate 151C, and the convex portion 156C protruding upward and the convex portion 157C protruding downward are alternately repeated in the horizontal direction. It is formed in a corrugated shape (corrugated plate shape). When the protective member 15C is viewed from the upper side, as shown in FIG. 4A, a hole 155C through which the contact pressure spring 16 is passed is provided in the central portion, and the compatible wall portions 152C and 152C are mutually connected. Are arranged so that the opening sides of each face each other.

  Here, in this embodiment, the left-right direction in FIG. 4A is the first direction, and the up-down direction in FIG. 4B is the second direction orthogonal to the first direction. In the present embodiment, the connecting portion is constituted by the bottom wall portion 154C of the support plate 151C and the elastic portion 153C.

  Also in this example, the elastic portions 153C and 153C generate elastic forces that push the respective standing wall portions 152C outward (joining portions of the first member 13 and the second member 17). And the corresponding first member 13 becomes smaller. As a result, there is an advantage that the arc is unlikely to contact the joint portion of the first member 13 and the second member 17.

  Fig.5 (a) and FIG.5 (b) have shown another example of the protection member used for the contact apparatus 10 of this embodiment. The protective member 15D of this example is made of a synthetic resin such as plastic, for example, and is integrally formed by a pair of support plates 151D and 151D and a pair of elastic portions 153D and 153D that connect the pair of support plates 151D and 151D. Has been.

  Each support plate 151D has a bottom wall portion 154D formed in a rectangular plate shape, and a standing wall portion 152D protruding upward is integrally provided on the upper surface of the bottom wall portion 154D. As shown in FIG. 5A, the standing wall portion 152 </ b> D is formed in a U shape so that the shape seen from above is along the inner wall of the storage container 18.

  Each elastic portion 153D is formed in a rectangular plate shape whose thickness in the front-rear direction orthogonal to both the vertical direction and the left-right direction is thinner than the bottom wall portion 154D of the support plate 151D and is longer in the left-right direction. When the protection member 15D is viewed from the upper side, as shown in FIG. 5A, a hole 155D for allowing the contact pressure spring 16 to pass therethrough is provided in the central portion, and the compatibility wall portions 152D and 152D are mutually connected. Are arranged so that the opening sides of each face each other.

  Here, in this embodiment, the horizontal direction in FIG. 5A is the first direction, and the vertical direction in FIG. 5B is the second direction orthogonal to the first direction. Moreover, the up-down direction (front-back direction) in Fig.5 (a) is a 3rd direction orthogonal to both the 1st direction and the 2nd direction. Furthermore, in the present embodiment, the bottom wall portion 154D and the elastic portion 153D of the support plate 151D constitute a connecting portion, and the bottom wall portion 154D constitutes the remaining portion of the connecting portion.

  Also in this example, the elastic portions 153D and 153D generate elastic forces that push the respective standing wall portions 152D outward (joining portions of the first member 13 and the second member 17). And the corresponding first member 13 becomes smaller. As a result, there is an advantage that the arc is unlikely to contact the joint portion of the first member 13 and the second member 17.

  FIGS. 6A and 6B show still another example of the protective member used in the contact device 10 of the present embodiment. The protective member 15E of this example is made of synthetic resin such as plastic, and is integrally formed by a pair of support plates 151E and 151E and a pair of elastic portions 153E and 153E that connect the pair of support plates 151E and 151E. Has been.

  Each support plate 151E has a bottom wall portion 154E formed in a rectangular plate shape, and an upright wall portion 152E protruding upward is integrally provided on the upper surface of the bottom wall portion 154E. As shown in FIG. 6A, the standing wall portion 152 </ b> E is formed in a U shape so that the shape seen from above is along the inner wall of the storage container 18.

  Each elastic portion 153E is thinner in the front-rear direction perpendicular to both the vertical direction and the left-right direction than the bottom wall portion 154E of the support plate 151E. In addition, each elastic portion 153E is formed in a corrugated shape (corrugated plate shape) by a convex portion 156E protruding backward and a convex portion 157E protruding forward alternately alternately in the left-right direction. When the protection member 15E is viewed from the upper side, as shown in FIG. 6 (a), a hole 155E for allowing the contact pressure spring 16 to pass therethrough is provided in the central portion, and the compatible wall portions 152E and 152E are mutually connected. Are arranged so that the opening sides of each face each other.

  Here, in this embodiment, the left-right direction in FIG. 6A is the first direction, and the up-down direction in FIG. 6B is the second direction orthogonal to the first direction. Moreover, the up-down direction (front-back direction) in FIG. 6A is a third direction orthogonal to both the first direction and the second direction. Furthermore, in the present embodiment, a connecting portion is configured by the bottom wall portion 154E and the elastic portion 153E of the support plate 151E.

  Also in this example, the elastic portions 153E and 153E generate elastic forces that push the respective standing wall portions 152E outward (joining portions of the first member 13 and the second member 17). And the corresponding first member 13 becomes smaller. As a result, there is an advantage that the arc is unlikely to contact the joint portion of the first member 13 and the second member 17.

  By the way, in each above-mentioned Example, although protection member 15A-15E is comprised only with the insulating material, as shown, for example in FIG. 7, you may combine with the metal plate 158F. The protection member 15F includes a pair of support plates 151F and 151F made of a synthetic resin such as plastic, and an elastic portion 153F and 153F made of an elastic material such as plastic and rubber, for connecting the pair of support plates 151F and 151F, A metal plate 158F.

  The metal plate 158F is formed in a rectangular box shape whose upper surface is open, and a hole 159F connected to the hole 155F (added to FIG. 7) of the protection member 15F is provided at the center of the lower surface. The metal plate 158F is integrated with the pair of support plates 151F and 151F and the pair of elastic portions 153F and 153F by insert molding (see FIG. 7).

  Also in this example, the elastic portions 153F and 153F generate elastic forces that push the respective standing wall portions 152F outward (joining portions of the first member 13 and the second member 17). And the corresponding first member 13 becomes smaller. As a result, there is an advantage that the arc is unlikely to contact the joint portion of the first member 13 and the second member 17.

  Further, in each of the above-described embodiments, the arc generated between each movable contact 121 and the corresponding fixed contact 111 is extended in the left-right direction. However, as shown in FIG. 8A or 8B, You may extend the said arc in the front-back direction (the up-down direction in Fig.8 (a) or FIG.8 (b)). As shown in FIG. 8A, when the permanent magnets 4 and 4 are arranged on the left and right sides of the storage container 18 with the north pole facing inward, the fixed contact 111 corresponding to each movable contact 121 and The arc generated during the period is stretched forward (upward in FIG. 8A).

  As shown in FIG. 8B, when the right permanent magnet 4 is arranged outside the storage container 18 so that the south pole is inward, the movable contact 121 corresponding to the permanent magnet 4 is fixed. The arc generated between the contacts 111 is extended backward (downward in FIG. 8B). That is, in any case, the arc is stretched in the front-rear direction (vertical direction in FIG. 8A or FIG. 8B).

  FIG. 9 shows an example of a protective member used in the contact device shown in FIG. 8 (a) or FIG. 8 (b). The protection member 15G includes a pair of support plates 151G and 151G and a pair of elastic portions 153G and 153G that connect the pair of support plates 151G and 151G.

  Each support plate 151G is made of a synthetic resin such as plastic, and has a bottom wall portion 154G formed in a plate shape that is long in the left-right direction, and a pair of standing wall portions projecting upward on the upper surface of the bottom wall portion 154G. 152G and 152G are provided near both sides in the left-right direction. As shown in FIG. 9A, each standing wall portion 152 </ b> G is formed in an L shape so that the shape seen from above is along the inner wall of the storage container 18.

  Each elastic portion 153G is made of an elastic material such as plastic or rubber, and is formed in a rectangular plate shape that is long in the left-right direction. And these elastic parts 153G and 153G are integrated with both the support plates 151G and 151G by insert molding. In a state where both the support plates 151G and 151G and the both elastic portions 153G and 153G are integrated, a hole 155G through which the contact pressure spring 16 is passed is formed in the center portion, and each of the standing wall portions 152G is the first member 13 in the front-rear direction. And it arrange | positions facing the joining site | part of the 2nd member 17 (refer Fig.9 (a)).

  Here, in this embodiment, the vertical direction in FIG. 9A is the first direction. In the present embodiment, the connecting portion is configured by the bottom wall portion 154G and the elastic portion 153G of the support plate 151G.

  In the present embodiment, the elastic portions 153G and 153G generate elastic forces that push the respective standing wall portions 152G in the front-rear direction (vertical direction in FIG. 9A). As a result, the gap between each standing wall 152G and the corresponding first member 13 is reduced, and there is an advantage that the arc is unlikely to contact the joint portion of the first member 13 and the second member 17.

  FIG. 10 shows another example of the protective member used in the contact device shown in FIG. 8 (a) or FIG. 8 (b). The protection member 15H is made of, for example, a synthetic resin such as plastic, and is integrally formed by a pair of support plates 151H and 151H and a pair of elastic portions 153H and 153H that connect the pair of support plates 151H and 151H. .

  Each support plate 151H has a bottom wall portion 154H formed in a plate shape that is long in the left-right direction, and a pair of standing wall portions 152H, 152H protruding upward are located on both sides in the left-right direction on the upper surface of the bottom wall portion 154H. Is provided. As shown in FIG. 10, each standing wall portion 152 </ b> H is formed in an L shape so that the shape seen from above is along the inner wall of the storage container 18.

  Each elastic portion 153H is thinner in the left-right direction than the bottom wall portion 154H of the support plate 151H. In addition, each elastic portion 153H is formed in a corrugated shape (corrugated plate shape) by alternately repeating a convex portion 156H projecting leftward and a convex portion 157E projecting rightward in the front-rear direction. When the protection member 15H is viewed from the upper side, as shown in FIG. 10, a hole 155H for allowing the contact pressure spring 16 to pass therethrough is provided in the central portion, and each of the standing wall portions 152H is the first member 13 in the front-rear direction. And it arrange | positions facing the joining site | part of the 2nd member 17 (refer FIG. 10).

  Here, in this embodiment, the vertical direction in FIG. 10 is the first direction, and the direction perpendicular to the paper surface in FIG. 10 is the second direction orthogonal to the first direction. In this embodiment, the bottom wall portion 154H and the elastic portion 153H of the support plate 151H constitute a connecting portion, and the bottom wall portion 154H constitutes the remaining portion of the connecting portion.

  Also in this example, since the elastic portions 153H and 153H generate elastic forces that push the respective standing wall portions 152H in the front-rear direction (vertical direction in FIG. 10), the first member 13 corresponding to each standing wall portion 152H. The gap between the two becomes smaller. As a result, there is an advantage that the arc is unlikely to contact the joint portion of the first member 13 and the second member 17. Here, the elastic portions are not limited to those shown in FIGS. 9 and 10, and the above-described elastic portions 153 </ b> A to 153 </ b> F may be employed.

  In this embodiment, the elastic portions 153B to 153E and 153H are integrally formed of the same material as the bottom wall portions 154B to 154E and 154H. Etc.). In this case, the elastic portions 153B to 153E and 153H are integrated with the bottom wall portions 154B to 154E and 153H by insert molding.

  In the present embodiment, the elastic portion 153A in FIG. 2 is formed of an elastic material. However, for example, the elastic portion 153A may be formed of a thermal expansion material that expands in the left-right direction when the temperature in the storage container 18 rises. Good. However, in this case, the outer dimension of the pair of standing wall portions 152A and 152A in the left-right direction must be smaller than the inner dimension of the storage container 18 in the left-right direction.

  Furthermore, the elastic portions 152A to 152H in each of the above-described embodiments are examples, and elastic force that pushes the pair of standing wall portions 152A to 152H toward the joint portion of the first member 13 and the second member 17 constituting the storage container 18. Any other shape may be used as long as it causes the problem. Moreover, in this embodiment, although one part in the 1st direction of the connection part was made into the elastic part, the whole connection part may be comprised with an elastic part, and is not limited to this embodiment.

  The contact device 10 of this embodiment includes the contact block 1, the storage container 18, a pair of standing wall portions 152A and 152A, and a connecting portion (elastic portion 153A and bottom wall portion 154A). The contact block 1 includes a fixed terminal 11 having a fixed contact 111 and a movable contact 121, a first position where the movable contact 121 contacts the fixed contact 111, and a second position where the movable contact 121 is separated from the fixed contact 111. The movable contact 12 which moves between is provided. The storage container 18 is formed by joining the first member 13 and the second member 17 to form a storage space in which the contact block 1 is stored. The pair of standing wall portions 152 </ b> A and 152 </ b> A are provided in the storage space on both sides of the contact block 1 in the first direction and at positions facing the joint portions of the first member 13 and the second member 17. And the said connection part produces | generates the elastic force which connects a pair of standing wall part 152A, 152A and pushes a pair of standing wall part 152A, 152A toward the said junction part.

  According to the above configuration, each of the standing wall portions 152A is pushed toward the joining portion of the first member 13 and the second member 17 by the elastic force applied from the connecting portion, and therefore, between the storage container 18 and each of the standing wall portions 152A. The gap can be reduced. Thereby, it is possible to provide the contact device 10 in which an arc generated between the fixed contact 111 and the movable contact 121 is unlikely to contact the storage container 18.

  In addition, like the contact device 10 of the present embodiment, the pair of standing wall portions 152B and 152B are secondly orthogonal to the first direction from both ends in the first direction of the connecting portion (the elastic portion 153B and the bottom wall portion 154B). Projecting in the direction is preferred. In this case, the connecting portion includes an elastic portion 153B that is partly in the first direction and has a thickness in the second direction that is thinner than that of the remaining portion and generates the elastic force.

  According to the above configuration, the elastic portions 153B and 153B generate the elastic force that pushes each of the standing wall portions 152B toward the joining portion side of the first member 13 and the second member 17, respectively, and therefore corresponds to each standing wall portion 152B. The gap between the first member 13 is reduced. As a result, there is an advantage that the arc is unlikely to contact the joint portion of the first member 13 and the second member 17.

  Further, like the contact device 10 of the present embodiment, the pair of standing wall portions 152C and 152C are secondly orthogonal to the first direction from both ends in the first direction of the connecting portion (the elastic portion 153C and the bottom wall portion 154C). Projecting in the direction is preferred. In this case, the connecting portion includes an elastic portion 153 </ b> C that is formed in a corrugated shape in a part of the first direction by repeating unevenness in the second direction in the first direction, and generates the elastic force.

  According to the above configuration, the elastic portions 153C and 153C generate the elastic force that pushes each standing wall portion 152C toward the joining portion side of the first member 13 and the second member 17, respectively, and therefore corresponds to each standing wall portion 152C. The gap between the first member 13 is reduced. As a result, there is an advantage that the arc is unlikely to contact the joint portion of the first member 13 and the second member 17.

  In addition, like the contact device 10 of the present embodiment, the pair of standing wall portions 152D and 152D are secondly orthogonal to the first direction from both ends in the first direction of the connecting portion (the elastic portion 153D and the bottom wall portion 154D). Projecting in the direction is preferred. In this case, the connecting portion has an elastic portion 153D that generates a part of the first direction in which the thickness in the third direction orthogonal to both the first direction and the second direction is thinner than the remaining portion. Have

  According to the above configuration, the elastic portions 153D and 153D generate the elastic force that pushes each of the standing wall portions 152D toward the joining portion side of the first member 13 and the second member 17, respectively, and therefore corresponds to each standing wall portion 152D. The gap between the first member 13 is reduced. As a result, there is an advantage that the arc is unlikely to contact the joint portion of the first member 13 and the second member 17.

  Further, like the contact device 10 of the present embodiment, the pair of standing wall portions 152E and 152E is a second portion orthogonal to the first direction from both end portions in the first direction of the connecting portion (the elastic portion 153E and the bottom wall portion 154E). Projecting in the direction is preferred. In this case, the connecting portion is formed in a corrugated shape in a part of the first direction by repeating irregularities in the third direction orthogonal to both the first direction and the second direction in the first direction, It has the elastic part 153E which produces an elastic force.

  According to the above configuration, the elastic portions 153E and 153E generate elastic forces that push the respective standing wall portions 152E toward the joint portions of the first member 13 and the second member 17, respectively, and therefore correspond to the respective standing wall portions 152E. The gap between the first member 13 is reduced. As a result, there is an advantage that the arc is unlikely to contact the joint portion of the first member 13 and the second member 17.

  Moreover, like the contact apparatus 10 of this embodiment, it is preferable that elastic part 153B-153E consists of metal materials, and is integrated with the remaining site | parts of the said connection part by insert molding.

  According to the said structure, the width | variety of material selection of the other site | parts except elastic part 153B-153E can be expanded, and, thereby, the freedom degree of design can be raised.

  Further, like the contact device 10 of the present embodiment, it is preferable that the elastic portions 153B to 153E are integrally formed of the same material as the remaining portions of the connecting portion.

  According to the said structure, manufacturing cost can be lowered | hung by shape | molding elastic part 153B-153E integrally with the remaining site | part of a connection part by the same material.

  Moreover, like the contact device 10 of this embodiment, the said connection part consists of thermal expansion materials in a part in a 1st direction, expand | swells in a 1st direction with the temperature change in the storage container 18, and the said elastic force It is preferable to have an elastic portion 153A that generates the above.

  According to the above configuration, the elastic portion 153 </ b> A expands in the first direction due to the temperature change in the storage container 18, whereby the gap between each standing wall portion 152 </ b> A and the corresponding first member 13 can be reduced. As a result, there is an advantage that the arc is unlikely to contact the joint portion of the first member 13 and the second member 17.

  Further, like the contact device 10 of the present embodiment, it is preferable that the outer dimension L2 of the pair of standing wall portions 152A and 152A in the first direction is larger than the inner dimension L1 of the storage container 18 in the first direction. .

  According to the said structure, each standing wall part 152A can be pressed against the 1st member 13, As a result, there exists an advantage that an arc is hard to contact the joining site | part of the 1st member 13 and the 2nd member 17. FIG.

  Moreover, it is preferable that the permanent magnets 4 and 4 are arrange | positioned on the both sides of the contact block 1 on the outer side of the storage container 18 like the contact apparatus 10 of this embodiment.

  According to the above configuration, the arc generated between the movable contact 121 and the fixed contact 111 can be extended outward by the magnetic field generated by the permanent magnets 4 and 4.

Reference Signs List 1 contact block 11 fixed terminal 12 movable contact 13 first member 17 second member 18 storage container 111 fixed contact 121 movable contact 152A standing wall

Claims (10)

A fixed terminal having a fixed contact; and a movable contact having a movable contact and moving between a first position where the movable contact contacts the fixed contact and a second position where the movable contact moves away from the fixed contact. A contact block comprising:
A storage container in which a first member and a second member are joined to form a storage space in which the contact block is stored;
In the storage space, a pair of standing wall portions provided on both sides of the contact block in the first direction and at positions facing the joint portions of the first member and the second member;
And a connecting portion that connects the pair of standing wall portions and generates an elastic force that pushes the pair of standing wall portions toward the joining portion. The pair of standing wall portions protrudes from both end portions in the first direction of the connecting portion in a second direction orthogonal to the first direction,
2. The contact device according to claim 1, wherein the connecting portion includes an elastic portion that is partly in the first direction and has a thickness in the second direction that is thinner than the remaining portion and generates the elastic force. . The pair of standing wall portions protrudes from both end portions in the first direction of the connecting portion in a second direction orthogonal to the first direction,
The connecting portion has an elastic portion that is formed in a corrugated shape by repeating irregularities in the second direction in the first direction, and generates the elastic force, in part in the first direction. The contact device according to claim 1. The pair of standing wall portions protrudes from both end portions in the first direction of the connecting portion in a second direction orthogonal to the first direction,
The connecting portion includes an elastic portion that is partly in the first direction and has a thickness in a third direction orthogonal to both the first direction and the second direction that is smaller than the remaining portion, and generates the elastic force. The contact device according to claim 1, further comprising: The pair of standing wall portions protrudes from both end portions in the first direction of the connecting portion in a second direction orthogonal to the first direction,
The connecting part is formed in a corrugated shape in a part in the first direction by repeating irregularities in a third direction orthogonal to both the first direction and the second direction in the first direction, The contact device according to claim 1, further comprising an elastic portion that generates the elastic force.   The contact device according to claim 2, wherein the elastic portion is integrally formed of the same material as that of the remaining portion of the connecting portion.   The contact device according to claim 2, wherein the elastic portion is made of a metal material and is integrated with the remaining portion of the connecting portion by insert molding.   The connecting portion includes an elastic portion that is made of a thermally expandable material in a part in the first direction, expands in the first direction due to a temperature change in the storage container, and generates the elastic force. The contact device according to claim 1.   The outside dimension of the pair of standing wall portions in the first direction is larger than the inside dimension of the storage container in the first direction. Contact device.   The contact device according to any one of claims 1 to 9, wherein magnets are arranged outside the storage container and on both sides of the contact block.

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