WO2014208098A1 - 接点装置および当該接点装置を搭載した電磁継電器 - Google Patents
接点装置および当該接点装置を搭載した電磁継電器 Download PDFInfo
- Publication number
- WO2014208098A1 WO2014208098A1 PCT/JP2014/003431 JP2014003431W WO2014208098A1 WO 2014208098 A1 WO2014208098 A1 WO 2014208098A1 JP 2014003431 W JP2014003431 W JP 2014003431W WO 2014208098 A1 WO2014208098 A1 WO 2014208098A1
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- WIPO (PCT)
- Prior art keywords
- yoke
- contact
- movable contact
- press
- movable
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/60—Contact arrangements moving contact being rigidly combined with movable part of magnetic circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2235/00—Springs
- H01H2235/01—Spiral spring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/02—Non-polarised relays
- H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
- H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
- H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles
Definitions
- the present invention relates to a contact device and an electromagnetic relay equipped with the contact device.
- a contact device a contact block having a fixed terminal provided with a fixed contact, a movable contact provided with a movable contact contacting and separating from the fixed contact, and a drive block having a drive shaft for driving the movable contact (For example, refer to Patent Document 1).
- a movable contact is attached to one end of a drive shaft formed to reciprocate in the axial direction.
- the movable contact is sandwiched between the upper yoke and the lower yoke, and is urged toward the fixed contact by the contact pressure spring.
- the upper yoke and the lower yoke form a magnetic circuit when a current flows when the movable contact and the fixed contact are in contact with each other, and generate a magnetic force that attracts each other, so that the movable contact is separated from the fixed contact.
- the operation to be restricted is regulated.
- the contact pressure spring biases the movable contact toward one end of the drive shaft via the lower yoke.
- the contact pressure spring is configured to urge the movable contact via the lower yoke provided on the lower side of the movable contact, the arrangement location of the contact pressure spring is limited to the lower surface of the lower yoke. End up.
- an object of the present invention is to obtain a contact device that can further improve the degree of freedom of arrangement of the urging unit that urges the movable contact and an electromagnetic relay equipped with the contact device.
- the contact device of the present invention includes a contact block having a fixed terminal on which a fixed contact is formed, a movable contact on which a movable contact contacting and separating from the fixed contact is formed, and a drive shaft to which the movable contact is attached. And a drive block that drives the movable contact so that the movable contact contacts and separates from the fixed contact, and the contact block biases the movable contact toward one side in the drive axis direction. And a yoke disposed at least on the other side in the drive shaft direction of the movable contact when the movable contact is in contact with the fixed contact.
- the gist is to have a biasing end that presses a member different from the yoke to apply a biasing force to the movable contact.
- the gist is that the biasing end is located on one side of the yoke in the drive axis direction than the other surface of the yoke in the drive axis direction.
- the urging end is positioned flush with the other surface of the yoke on the other side in the drive axis direction or on the other side of the yoke with respect to the other side of the drive shaft direction. .
- the gist is that the urging portion directly urges the movable contact.
- the gist is that the urging portion urges the movable contact by pressing a member different from the movable contact.
- the gist of the invention is that the yoke is formed with a hole penetrating at least in the drive shaft direction, and the urging end is accommodated in the hole.
- the yoke includes a first yoke including at least a portion disposed on the other side of the movable contact in the drive shaft direction, and the first yoke and the movable contact are fixed by a fixing means. It is a summary.
- the fixing means includes press-fitting means for fixing the press-fitting part formed in at least one of the first yoke and the movable contact member by press-fitting the press-fitted part formed in the other. Is the gist.
- the gist of the invention is that the press-fit portion includes a press-fit protrusion formed on at least one of the first yoke and the movable contact.
- the gist of the press-fitting protrusion includes a protrusion formed by doweling.
- the gist of the press-fit portion includes at least one of an insertion hole into which the press-fit protrusion is inserted and an insertion recess.
- the gist of the press-fitted portion is a stepped portion.
- the gist of the press-fitted portion is a tapered portion.
- the gist of the press-fitting protrusion includes a bending raising portion formed on at least one of the first yoke and the movable contact.
- the fixing means includes caulking means for fixing the caulking part formed on at least one of the first yoke and the movable contact by caulking to the caulking part formed on the other. Is the gist.
- the gluing portion includes a caulking protrusion formed on at least one of the first yoke and the movable contact.
- the gluing protrusion includes a protrusion formed by dowel processing.
- the gluing portion includes an insertion hole into which the caulking protrusion is inserted.
- the gist of the caulked portion is a stepped portion.
- the gluing portion has a tapered portion.
- the gist is that the caulking protrusion is caulked while being press-fitted into the insertion hole.
- the gist protrusion includes a bending raising portion formed on at least one of the first yoke and the movable contact.
- the gist includes that the fixing means includes welding means for fixing the first yoke and the movable contact by welding.
- the gist of the invention is that the fixing means includes an adhesive means for fixing the first yoke and the movable contact member through an adhesive.
- the gist of the invention is that the fixing means includes joint means for fixing by inserting a joint member into an insertion portion formed in the first yoke and the movable contact.
- the gist of the invention is that the contact device is mounted on the electromagnetic relay of the present invention.
- a contact device that can further improve the degree of freedom of arrangement of the urging portion that urges the movable contact and an electromagnetic relay equipped with the contact device.
- FIG. 1 It is a perspective view which shows the electromagnetic relay concerning one Embodiment of this invention. It is a disassembled perspective view of the electromagnetic relay concerning one Embodiment of this invention. It is a disassembled perspective view which decomposes
- FIG. 1 It is a perspective view which decomposes
- FIG. 9 is a plan sectional view schematically showing another modification of the lower yoke.
- FIG.4 It is a figure which shows the modification of a contact device typically, Comprising: It is a sectional side view corresponding to Fig.4 (a). It is sectional drawing which shows typically the 1st modification of the press state of the movable contact by a contact pressure spring. It is sectional drawing which shows typically the 2nd modification of the press state of the movable contact by a contact pressure spring. It is sectional drawing which shows typically the 3rd modification of the press state of the movable contact by a contact pressure spring. It is sectional drawing which shows typically the 4th modification of the press state of the movable contact by a contact pressure spring. It is sectional drawing which shows typically the 5th modification of the press state of the movable contact by a contact pressure spring.
- the electromagnetic relay 100 is a so-called normally open type in which the contact is turned off in the initial state. As shown in FIGS. 1 to 3, the drive block 2 located at the lower portion and the contact block located at the upper portion are arranged. 3 is integrally provided.
- the contact device 1 is housed in a hollow box type case 5. It is also possible to use a so-called normally closed electromagnetic relay that is contact-on in the initial state.
- the case 5 includes a substantially rectangular case base 7 and a case cover 9 that accommodates mounting parts such as the drive unit 2 and the contact unit 3 disposed so as to cover the case base 7.
- the case base 7 is provided with a pair of slits 71 and 71 on the lower side in FIG.
- the case base 7 is provided with a pair of slits 72, 72 on which the terminal portions 10b, 10b of the pair of main terminals 10, 10 are mounted on the upper side in FIG.
- the case cover 9 is formed in a hollow box shape in which the case base 7 side is opened.
- the insertion hole 71 has substantially the same shape as that of the coil terminal 20, and the insertion hole 72 has substantially the same shape as that of the terminal portion 10 b of the main terminal 10.
- the drive block 2 includes a hollow cylindrical coil bobbin 11 around which the coil 13 is wound, and a pair of coil terminals 20 fixed to the coil bobbin 11 and connected to both ends of the coil 13.
- the coil bobbin 11 includes substantially circular flange portions 11c protruding in the circumferential direction at both upper and lower ends of the cylindrical portion, and a winding drum portion 11d around which the coil 13 is wound is formed between the upper and lower flange portions 11c. ing.
- the coil terminals 20 are formed in a flat plate shape using a conductive material such as copper, and the pair of coil terminals 20 are provided with relay terminals 20a. Each relay terminal 20a is soldered in a state in which lead wires at both ends of the coil 13 wound around the coil bobbin 11 are entangled.
- the drive block 2 is driven by energizing the coil 13 via the pair of coil terminals 20.
- a contact constituted by a fixed contact 35a and a movable contact 29b of the contact block 3 to be described later is opened and closed to switch between conduction and non-conduction between the pair of fixed terminals 35. Can be done.
- the drive block 2 includes a yoke 6 made of a magnetic material and surrounding the coil bobbin 11.
- the yoke 6 is composed of a rectangular yoke upper plate 21 that abuts on the upper end surface of the coil bobbin 11 and a rectangular yoke 19 that abuts on the lower end surface and side surfaces of the coil bobbin 11. , Open in the front-rear direction.
- the yoke 19 is disposed between the coil 13 and the case 5, and the yoke 19 includes a bottom wall 19 a and a pair of side walls 19 b and 19 b rising from the periphery of the bottom wall 19 a.
- the bottom wall 19a and the pair of side walls 19b, 19b are formed integrally by bending a single plate.
- an annular insertion hole 19c is formed in the bottom wall 19a of the yoke 19, and a bush 16 made of a magnetic material is attached to the insertion hole 19c.
- the yoke upper board 21 mentioned above is arrange
- the drive block 2 is fixed inside the cylinder of the coil bobbin 11 and magnetized by the energized coil 13, and the fixed iron core 15 is opposed in the vertical direction (axial direction), and the cylinder of the coil bobbin 11. And a movable iron core 17 disposed therein.
- the fixed iron core 15 is formed in a substantially columnar shape, and a flange portion 15b is provided to protrude in the circumferential direction at the upper end of the projection portion 15a formed in the insertion hole 15c.
- the drive block 2 includes a plunger cap 14 made of a magnetic material and formed in a bottomed cylindrical shape with an upper surface opened between the fixed iron core 15 and the movable iron core 17 and the coil bobbin 11.
- the plunger cap 14 is disposed in the insertion hole 11 a formed at the center of the coil bobbin 11.
- an annular seat surface 11b is formed on the upper side of the coil bobbin 11, and the flange portion 14a of the plunger cap 14 is placed on the seat surface 11b.
- the protrusion part 14b of the plunger cap 14 is fitted by the insertion hole 11a.
- the fixed iron core 15 and the movable iron core 17 are accommodated in a plunger cap 14 provided inside the cylinder of the coil bobbin 11.
- the fixed iron core 15 is disposed on the opening side of the plunger cap 14.
- the fixed iron core 15 and the movable iron core 17 are each formed in a columnar shape whose outer diameter is substantially the same as the inner diameter of the plunger cap 14, and the movable iron core 17 slides inside the cylinder of the plunger cap 14. It has become.
- the moving range of the movable iron core 17 is set between an initial position away from the fixed iron core 15 and a contact position where the movable iron core 15 contacts the fixed iron core 15.
- a return spring 23 made of a coil spring and energizing the movable iron core 17 in a direction to return it to the initial position is interposed.
- the movable iron core 17 is urged by the return spring 23 in a direction away from the fixed iron core 15 (upper side in FIG. 4).
- a protrusion 15d that protrudes toward the center and decreases the hole diameter is provided in the insertion hole 15c of the fixed iron core 15 over the entire circumference, and the lower surface 15f of the protrusion 15d is a return spring. 23 spring receiving portions.
- an insertion hole 21a through which the fixed iron core 15 is inserted is provided in the center of the yoke upper plate 21.
- the cylindrical portion 15 b of the fixed iron core 15 is inserted from the upper surface side of the yoke upper plate 21.
- a concave portion 21b having substantially the same diameter as the flange portion 15b of the fixed iron core 15 is provided at the approximate center of the upper surface of the yoke upper plate 21, and the flange portion 15b of the fixed iron core 15 is fitted into the concave portion 21b.
- the stopper is made.
- a pressing plate 49 made of metal is provided on the upper surface side of the yoke upper plate 21, and the left and right ends are fixed to the upper surface of the yoke upper plate 21. And the convex part of the center of the pressing board 49 is provided so that the space which accommodates the flange part 15b of the fixed iron core 15 which protruded from the upper surface of the yoke upper board 21 may be formed.
- an iron core rubber 18 made of a material having rubber elasticity (for example, synthetic rubber) is provided between the fixed iron core 15 and the holding plate 49, and vibration from the fixed iron core 15 is suppressed. It is not directly propagated to the plate 49.
- the iron core rubber 18 is formed in a disc shape, and an insertion hole 18a through which a shaft (driving shaft) 25 (described later) is inserted is provided at the center. Furthermore, in this embodiment, the iron core rubber 18 is fitted to the fixed iron core 15 so as to wrap the flange portion 15b.
- a flange portion 14 a protruding in the circumferential direction is formed on the opening side of the plunger cap 14, and the flange portion 14 a is fixed around the insertion hole 21 a on the lower surface of the yoke upper plate 21. And the lower end bottom part of the plunger cap 14 is penetrated by the bush 16 with which the insertion hole 19c of the bottom wall 19a was mounted
- the opposed surface of the fixed iron core 15 to the movable iron core 17 and the peripheral portion of the bush 16 on the bottom wall 19a have different polarities as a pair of magnetic pole portions.
- the movable iron core 17 is attracted to the fixed iron core 15 and moved to the contact position.
- the return spring 23 is inserted into the insertion hole 15 c of the fixed iron core 15, and the upper end is in contact with the lower surface 15 f of the protrusion 15 d and the lower surface is in contact with the upper surface of the movable iron core 17.
- a damper rubber 12 made of a material having rubber elasticity and having a diameter substantially the same as the outer diameter of the movable iron core 17 is provided at the bottom of the plunger cap 14.
- a contact block 3 that opens and closes a contact in response to turning on / off of the coil 13 is provided above the drive block 2.
- the contact block 3 includes a base 41 formed in a box shape whose lower surface is opened by a heat resistant material.
- the base 41 is provided with two insertion holes 41 a at the bottom, and a pair of fixed terminals 35 are inserted through the insertion holes 41 a with the lower flange 32 interposed therebetween.
- the fixed terminal 35 is formed in a cylindrical shape by a conductive material such as a copper-based material.
- a fixed contact 35a is formed at the lower end surface of the fixed terminal 35, a flange portion 35b protruding in the circumferential direction is formed at the upper end portion, and a convex portion 35c is provided at the center of the flange portion 35b. .
- the upper surface of the lower flange 32 and the flange portion 35 b of the fixed terminal 35 are hermetically joined by a silver solder 34, and the lower surface of the lower flange 32 and the upper surface of the base 41 are hermetically joined by a silver solder 36.
- a pair of main terminals 10 and 10 connected to an external load or the like are attached to the fixed terminal 35.
- the main terminals 10 and 10 are formed in a flat plate shape using a conductive material, and an intermediate portion in the front-rear direction is bent in a step shape.
- the front terminals of the main terminals 10 and 10 are formed with insertion holes 10a and 10a through which the convex portions 35c of the fixed terminal 35 are inserted, and the convex portions 35c through which the insertion holes 10a and 10a are inserted are subjected to spin caulking.
- the main terminals 10 and 10 are fixed to the fixed terminal 35.
- a movable contact 29 is disposed in the base 41 so as to straddle between the pair of fixed contacts 35a, and the movable contact 29b is provided at a position facing the fixed contact 35a on the upper surface of the movable contact 29, respectively. It has been.
- An insertion hole 29 a through which one end of the shaft 25 that connects the movable contact 29 to the movable iron core 17 is inserted is provided at the center of the movable contact 29.
- the shaft 25 is made of a non-magnetic material, and is formed in a circumferential direction on a shaft body portion 25b having a round bar shape that is long in the moving direction (vertical direction) of the movable iron core 17 and a portion protruding upward from the movable contact 29. And a flange portion 25a formed so as to protrude.
- an insulating plate 37 is formed between the movable contact 29 and the pressing plate 49 by an insulating material and is formed so as to cover the pressing plate 49, and a contact pressure formed by a coil spring through which the shaft 25 is inserted. And a spring (biasing portion) 33.
- An insertion hole 37 a through which the shaft 25 is inserted is provided at the center of the insulating plate 37, and the movable contact 29 is biased upward (one side in the drive shaft direction) by the contact pressure spring 33. .
- the movable contact 29b and the fixed contact 35a are separated from each other, and when the movable iron core 17 is in the contact position, the movable contact 29b and the fixed contact 35a are in contact with each other.
- the positional relationship between the movable iron core 17 and the movable contact 29 is set. That is, when the coil 13 is not energized, the contact device 3 is turned off to insulate the fixed terminals 35 from each other, and when the coil 13 is energized, the contact block 3 is turned on to The fixed terminals 35 are electrically connected.
- the contact pressure between the movable contact 29b and the fixed contact 35a is secured by the contact pressure spring 33.
- movable contact is made between an upper yoke (second yoke) 51 disposed on the upper side of the movable contact 29 and a lower yoke (first yoke) 52 surrounding the lower and side portions of the movable contact 29.
- a yoke 50 surrounding the upper and lower surfaces 29c, 29d and the side surface 29e of the child 29 is formed. That is, even when the movable contact 29b is separated from the fixed contact 35a (the power is turned off in this embodiment), the yoke 50 is disposed at least on the lower side (the other side in the drive shaft direction) of the movable contact 29. (Disposed in contact with the lower surface 29d).
- the movable contact 29 is surrounded by the upper yoke 51 and the lower yoke 52 so that a magnetic circuit is formed between the upper yoke 51 and the lower yoke 52.
- the upper yoke 51 and the lower yoke 52 By providing the upper yoke 51 and the lower yoke 52, when an electric current flows when the movable contact 29b and the fixed contacts 35a and 35a are in contact with each other, the upper yoke 51 and the lower yoke 52 are mutually connected based on the electric current. A magnetic force to be attracted is generated. Thus, the magnetic force attracting
- the movable contact 29 When the upper yoke 51 and the lower yoke 52 are attracted to each other, the movable contact 29 is pressed against the fixed contact 35a, and the operation of the movable contact 29 to be separated from the fixed contact 35a is restricted.
- the upper yoke 51 is formed in a substantially rectangular plate shape
- the lower yoke 52 is substantially composed of a bottom wall portion 52a and side wall portions 52b formed so as to rise from both ends of the bottom wall portion 52a. It is formed in a U shape.
- the upper end surface of the side wall 52b of the lower yoke 52 is preferably brought into contact with the lower surface of the upper yoke 51. May not be brought into contact with the lower surface of the upper yoke 51.
- the movable contact 29 is urged upward by the contact pressure spring 33.
- the contact pressure spring 33 has an upper end that contacts the lower surface 29d of the movable contact 29 and a lower end that contacts the upper surface 15e of the protrusion 15d.
- the upper surface 15 e of the protrusion 15 d is a spring receiving portion of the contact pressure spring 33.
- the upper yoke 51, the lower yoke 52, and the pressing plate 49 are formed with an insertion hole 51a, an insertion hole 52c, and an insertion hole 49a into which the shaft 25 is inserted, respectively.
- the movable contact 29 is attached to one end of the shaft 25 as follows.
- the child 29 and the upper yoke 51 are arranged in this order.
- the return spring 23 is inserted into the insertion hole 15 c of the fixed iron core 15 in which the protrusion 15 a is fitted into the insertion hole 21 a of the yoke upper plate 21 and the insertion hole 14 c of the plunger cap 14.
- the main body 25b of the shaft 25 is inserted through the insertion holes 51a, 29a, 52c, 37a, 49a, 18a, 15c, 21a, the contact pressure spring 33, and the return spring 23 from the upper side of the upper yoke 51, and the movable iron
- the core 17 is inserted through the insertion hole 17a and connected.
- the shaft 25 is connected to the movable iron core 17 by crushing the tip and riveting as shown in FIG.
- the shaft 25 may be connected to the movable iron core 17 by forming a thread groove on the other end of the shaft 25 and screwing it to the movable iron core 17.
- the movable contact 29 is attached to one end of the shaft 25.
- an annular seat surface 51b is formed on the upper side of the upper yoke 51, and the flange 25a of the shaft 25 is housed in the seat surface 51b, thereby suppressing upward projection of the shaft 25.
- the shaft 25 is prevented from coming off.
- the shaft 25 may be fixed to the upper yoke 51 by laser welding or the like.
- the insertion hole 15 c provided in the fixed iron core 15 is set to have a larger inner diameter than the outer diameter of the shaft 25 so that at least the shaft 25 does not contact the fixed iron core 15.
- gas is sealed in the base 41.
- a gas it is possible to use a mixed gas mainly composed of hydrogen gas, which is most excellent in heat conduction in a temperature region where an arc is generated.
- the upper flange 40 which covers the clearance gap between the base 41 and the yoke upper board 21 is provided.
- the base 41 has a top wall 41b in which a pair of insertion holes 41a are arranged side by side, and a square cylindrical wall portion 41c that rises from the periphery of the top wall 41b. It is formed in a hollow box shape in which the contact 29 side) is opened. And the base 41 is being fixed to the yoke upper board 21 via the upper flange 40 in the state which accommodated the movable contactor 29 inside the wall part 41c from the open lower side.
- the opening peripheral edge of the lower surface of the base 41 and the upper surface of the upper flange 40 are hermetically joined by the silver solder 38, and the lower surface of the upper flange 40 and the upper surface of the yoke upper plate 21 are hermetically joined by arc welding or the like. is doing. Further, the lower surface of the yoke upper plate 21 and the flange portion 14a of the plunger cap 14 are hermetically joined by arc welding or the like. By doing so, a sealed space S in which a gas is sealed in the base 41 is formed.
- the capsule yoke includes a magnetic member 30 and a pair of permanent magnets 31.
- the magnetic member 30 is formed in a substantially U shape by a magnetic material such as iron.
- the magnetic member 30 is integrally formed with a pair of side pieces 30a that oppose each other and a connecting piece 30b that connects the base end portions of both side pieces 30a.
- the permanent magnet 31 is attached to the both side pieces 30a of the magnetic member 30 so as to face the both side pieces 30a, respectively, and the permanent magnet 31 substantially contacts the base 41 with the moving direction of the movable contact 29a to the fixed contact 35a. Giving a direct magnetic field. As a result, the arc is stretched in a direction orthogonal to the moving direction of the movable contact 29 and is cooled by the gas sealed in the base 41, the arc voltage rapidly increases, and the arc voltage reduces the voltage between the contacts. When it exceeds, the arc is cut off. That is, in the electromagnetic relay 100 of this embodiment, an arc countermeasure is taken by magnetic blow by the capsule yoke and cooling by the gas sealed in the base 41. By doing so, the arc can be interrupted in a short time, and consumption of the fixed contact 35a and the movable contact 29b can be reduced.
- the position on the plane orthogonal to the moving direction is regulated. Therefore, the position of the shaft 25 connected to the movable iron core 17 in the plane orthogonal to the moving direction of the movable iron core 17 is also restricted. Furthermore, in this embodiment, the position of the shaft 25 in the plane orthogonal to the moving direction of the movable iron core 17 is also regulated by inserting the shaft 25 into the insertion hole 15 c in the fixed iron core 15.
- the insertion hole 15 c of the fixed iron core 15 is formed so that the inner diameter of the portion where the protrusion 15 d is formed is approximately the same as the outer diameter of the shaft 25. That is, the diameter of the shaft 25 is set so as to move up and down while restricting the movement of the shaft 25 in the front and rear and right and left directions.
- the inclination of the shaft 25 with respect to the moving direction of the movable iron core 17 is restricted at the two locations of the plunger cap 14 and the protrusion 15 d of the fixed iron core 15. Therefore, even if the shaft 25 is inclined with respect to the moving direction of the movable iron core 17, the position of the shaft 25 in the plane perpendicular to the moving direction of the movable iron core 17 is the lower end of the movable iron core 17 and the fixed iron core 15. Therefore, the inclination of the shaft 25 is restricted. As a result, straightness of the shaft 25 is ensured, and the shaft 25 can be prevented from tilting.
- FIGS. 4A and 4B are separated from the fixed contact 35a.
- the movable iron core 17 moves closer to the fixed iron core 15 by being attracted to the fixed iron core 15 against the elastic force of the return spring 23 by electromagnetic force.
- the upper yoke 51, the movable contact 29 and the lower yoke 52 attached to the shaft 25 and the shaft 25 are moved upward (the fixed contact 35a side).
- the movable contact 29b of the movable contact 29 comes into contact with the fixed contact 35a of the fixed terminal 35, and these contacts are electrically connected to each other, and the contact device 1 is turned on.
- the degree of freedom of arrangement of the contact pressure spring (biasing portion) 38 that biases the movable contact 29 can be further improved.
- the contact pressure spring (biasing portion) 33 presses a member different from the yoke 50 to apply an upward biasing force (one side in the drive shaft direction) to the movable contact 29. It has an end.
- the biasing end of the contact pressure spring (biasing portion) 33 is not directly pressed against the yoke 50, and the biasing end presses a member different from the yoke 50, so that the movable contact 29 can be moved. An upward biasing force is applied.
- the upper end 33a of the contact pressure spring (urging portion) 33 corresponds to the urging end.
- the upper end (biasing end) 33a directly presses the lower surface 29d of the movable contact 29 (a member different from the yoke 50), so that the contact pressure spring (biasing portion) 33 directly presses the movable contact 29. It is trying to be energized.
- the upper end (biasing end) 33a of the contact pressure spring (biasing portion) 33 is not required to directly press the yoke 50 upward (one side in the drive shaft direction: the movable contact 29 side).
- (Biasing end) 33a may be configured to indirectly press the yoke 50 upward. That is, the upper end (biasing end) 33a of the contact pressure spring (biasing portion) 33 presses a member different from the yoke 50, and as a result, the surface on the other side in the drive axis direction of the yoke 50 is the yoke 50. It is also possible to adopt a configuration that is pressed to one side in the drive axis direction by another member.
- the contact device 1 can be downsized in the height direction (vertical direction: drive shaft direction).
- the upper end (biasing end) 33a of the contact pressure spring (urging portion) 33 is lower than the lower surface of the lower yoke (first yoke) 52 (the surface on the other side in the drive axis direction of the yoke 50) 52d. It is positioned on the upper side (one side in the drive shaft direction: the movable contact 29 side).
- the diameter of the insertion hole 52c of the lower yoke 52 is made larger than the diameter of the insertion hole 29a of the movable contact 29 and the diameter of the shaft 25, and the insertion hole 52c and the insertion hole 29a are arranged concentrically.
- the upper portion of the contact pressure spring (biasing portion) 33 is inserted into the gap between the insertion hole 52c and the shaft 25, and the upper end (biasing end) 33a is the lower surface 29d (of the lower surface 29d of the lower surface 29d). When viewed from the lower side, it abuts on a portion not overlapping with the lower yoke 52).
- the lower yoke 52 is formed with an insertion hole (hole) 52c penetrating at least in the drive axis direction, and a contact pressure spring (biasing portion) is formed in the insertion hole (hole) 52c.
- the upper end (biasing end) 33a of 33 is accommodated.
- the upper end (biasing end) 33a of the contact pressure spring (urging portion) 33 does not come into contact with the lower yoke 52 (yoke 50) (without passing through the yoke) and moves upward to the movable contact 29.
- the urging force is applied. That is, in this embodiment, the contact pressure spring (biasing portion) 33 directly biases the movable contact 29 upward without using the lower yoke 52 (yoke 50).
- the upper end (biasing end) 33a may not be in contact with the lower yoke 52 (yoke 50) in the vertical direction (drive shaft direction). That is, the description that the lower yoke 52 (yoke 50) is not in contact is, for example, that the upper end (biasing end) 33a is on the lower side due to the lateral displacement of the contact pressure spring (biasing portion) 33. It does not mean that the configuration of contacting the side surface of the yoke 52 (yoke 50) (the inner peripheral surface of the insertion hole 52c) is not included.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by press-fitting means as fixing means.
- the side wall portion (press-fit portion) 52b formed on the lower yoke 52 that is at least one of the lower yoke (first yoke) 52 and the movable contact 29 is used as the other movable contact.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by press-fitting into a notch (press-fit portion) 29 f formed in 29.
- the side wall portion 52 b as a press-fit portion corresponds to a press-fit protrusion
- the press-fit portion is formed on at least one of the lower yoke (first yoke) 52 and the movable contact 29. It has a configuration including a press-fit protrusion.
- the lower yoke having the bottom wall portion 52a and the side wall portions 52b formed to rise from both ends of the bottom wall portion 52a by bending both ends of the plate-like member in the same direction.
- a (first yoke) 52 is formed.
- the side wall part 52b according to the present embodiment is also equivalent to a bent raised part. Therefore, in the present embodiment, the press-fitting protrusion includes a bending raising portion formed on at least one of the lower yoke (first yoke) 52 and the movable contact 29.
- the movable contact 29 may be formed with a press-fitting protrusion such as a bend raising portion, or both the lower yoke (first yoke) 52 and the movable contact 29 may be bent and raised. It is also possible to form a press-fit protrusion such as a notch and a press-fit part such as a notch, an insertion hole, or an insertion recess at a corresponding position on the other side.
- the contact pressure spring (biasing portion) 33 directly presses the movable contact 29 that is a member different from the yoke 50 to apply the contact to the movable contact 29 upward.
- An upper end (biasing end) 33a for applying a force is provided.
- the upper end (biasing end) 33a of the contact pressure spring (urging portion) 33 presses a member other than the yoke 50 (in this embodiment, the movable contact 29).
- the degree of freedom of arrangement of the contact pressure spring (biasing portion) 33 that biases 29 can be further improved.
- the contact pressure spring (biasing portion) 33 is located above the lower surface of the lower yoke (first yoke) 52 (the surface on the other side of the yoke 50 in the drive axis direction) 52d (in the drive axis direction). It has an upper end (biasing end) 33a that is located on one side and that exerts an upward biasing force on the movable contact 29 without contacting the lower yoke 52 (yoke 50) (without the yoke). I have to.
- the upper end (biasing end) 33a of the contact pressure spring (urging portion) 33 is above the lower surface (the surface on the other side in the drive axis direction of the yoke 50) 52d of the lower yoke (first yoke) 52 ( One side in the drive axis direction: the movable contact 29 side).
- the contact device 1 can be downsized in the height direction (vertical direction: drive shaft direction).
- the contact pressure spring (biasing portion) 33 directly biases the movable contact 29 upward without passing through the lower yoke 52 (yoke 50). Therefore, compared with the case where the upper end (biasing end) 33 a of the contact pressure spring (biasing portion) 33 is brought into contact with the lower surface of the lower yoke (first yoke) 52, the lower yoke (first yoke) 52 The height of the contact device 1 can be reduced by the thickness.
- the movable contact 29 is formed in a plate shape, and the upper surface 29c and the lower surface 29d of the plate-shaped movable contact 29 are flat, so that the weight of the movable contact 29 can be reduced. it can.
- the movable contactor 29 becomes lighter, so that the opening speed can be increased, and the breaking of the contact device 1 can be accelerated and the life of the contact device 1 can be extended.
- the upper end (biasing end) 33a of the contact pressure spring (urging portion) 33 is formed in the lower yoke 52 and is inserted into at least an insertion hole (hole portion) 52c penetrating in the drive shaft direction. I try to let them. Therefore, the displacement of the contact pressure spring (biasing portion) 33 is suppressed by the insertion hole 52c, and the upward biasing force can be applied to the movable contact 29 more stably.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by a fixing means.
- the positional deviation of the lower yoke (first yoke) 52 with respect to the movable contact 29 is suppressed, so that the operation of the movable contact 29 attempting to separate from the fixed contact 35a can be more reliably regulated. It becomes like this.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by press-fitting means as fixing means, the lower yoke (first yoke) 52 is fixed to the movable contact 29. It becomes possible to fix while positioning with respect to.
- the fixing position is set. It is easy to recognize and can be fixed more easily.
- the fixing means for the lower yoke (first yoke) 52 and the movable contact 29 is not limited to that described above, and various fixing means can be used.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by press-fitting means as fixing means.
- a protrusion (press-fit protrusion) 29g formed on the lower surface 29d of the movable contact 29 is inserted into an insertion hole (press-fit portion) 52e formed in the bottom wall 52a of the lower yoke (first yoke) 52.
- the lower yoke (first yoke) 52 and the movable contact 29 are press-fitted and fixed (fixed). Even with this configuration, the fixing position can be easily recognized, and the fixing operation can be performed more easily.
- the protrusion (press-fit protrusion) 29 g is formed by performing dowel processing on the movable contact 29.
- FIG. 9 illustrates an example in which two protrusions (press-fit protrusions) 29g are formed, but the number of protrusions (press-fit protrusions) 29g may be one or three or more.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by press-fitting means as fixing means.
- a protrusion (press-fit protrusion) 52f formed on the bottom wall portion 52a of the lower yoke (first yoke) 52 is press-fitted into an insertion hole (press-fit portion) 29h formed in the movable contact 29.
- the lower yoke (first yoke) 52 and the movable contact 29 are press-fitted and fixed (fixed). Even with this configuration, the fixing position can be easily recognized, and the fixing operation can be performed more easily.
- a protrusion (press-fit protrusion) 52f is formed by applying dowel processing to the lower yoke (first yoke) 52. Further, a step portion 29i is formed in the insertion hole (press-fit portion) 29h. 10 illustrates an example in which two protrusions (press-fit protrusions) 52f are formed, the number of protrusions (press-fit protrusions) 52f may be one or three or more.
- FIGS. 9 and 10 exemplify a structure in which a press-fit portion (press-fit protrusion) is formed on one of the lower yoke (first yoke) 52 and the movable contact 29, the lower yoke (first press) is illustrated.
- a press-fit portion (press-fit protrusion) may be formed in both the first yoke 52 and the movable contact 29.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by caulking means as fixing means.
- a protrusion (caulking protrusion) 29gA formed on the lower surface 29d of the movable contact 29 is inserted into an insertion hole (caulking part) 52eA formed in the bottom wall 52a of the lower yoke (first yoke) 52.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed (fixed) by caulking in the inserted state (in this embodiment, the press-fitted state).
- the protrusion (caulking protrusion) 29 gA is formed by performing dowel processing on the movable contact 29.
- a stepped portion 52gA is formed in the insertion hole (crimped portion) 52eA, and after the protruding portion (caulking protrusion) 29gA is crimped, the deformed protruding portion (caulking protrusion) 29gA is formed. It engages with the step portion 52gA. By doing so, it is possible to improve the pull-out strength after crimping, and it is possible to more reliably suppress separation of the lower yoke (first yoke) 52 and the movable contact 29.
- the number of protrusion parts (caulking protrusion part) 29gA may be one, or three or more.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by caulking means as fixing means.
- a protrusion (caulking protrusion) 29gA formed on the lower surface 29d of the movable contact 29 is inserted into an insertion hole (caulking part) 52eA formed in the bottom wall 52a of the lower yoke (first yoke) 52.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed (fixed) by caulking in the inserted state (in this embodiment, the press-fitted state).
- the insertion hole (caulking portion) 52eA is formed with a tapered portion 52hA whose diameter increases downward, and after the protrusion (caulking protrusion) 29gA is caulked, the deformed protrusion (caulking protrusion) Part)
- the outer peripheral surface of 29 gA is in contact with the tapered part 52 hA. Also by doing so, it is possible to improve the pull-out strength after crimping, and it is possible to more reliably suppress the separation of the lower yoke (first yoke) 52 and the movable contact 29.
- the protrusion (caulking protrusion) 29gA is formed by subjecting the movable contact 29 to doweling. Moreover, although the thing which formed two protrusion parts (caulking protrusion) 29gA is illustrated, the number of protrusion parts (caulking protrusion) 29gA may be one, or three or more.
- FIG. 11 and FIG. 12 exemplarily show that the stepped portion 52gA or the tapered portion 52hA is formed in the insertion hole (crimped portion) 52eA.
- both the stepped portion 52gA and the tapered portion 52hA are inserted into the insertion hole (crimped portion) ) 52eA may be formed.
- the protrusion (caulking protrusion) 29gA may not be press-fitted into the insertion hole (caulking portion) 52eA, but may be caulked while being simply inserted.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by caulking means as fixing means.
- the lower yoke (first yoke) 52 is subjected to doweling to form a protrusion (caulking protrusion) 52fA.
- a stepped portion 29iA is formed in the insertion hole (caulking portion) 29hA, and the deformed protrusion (caulking protrusion) 52fA is formed after the protrusion (caulking protrusion) 52fA is caulked.
- the step 29iA is engaged.
- FIG. 13 also illustrates an example in which two protrusions (caulking protrusions) 52fA are formed
- the number of protrusions (caulking protrusions) 52fA may be one or three or more.
- a taper portion may be formed in the insertion hole (crimped portion) 29hA instead of the step portion 29iA, or a taper portion may be formed in addition to the step portion 29iA. Further, it is possible not to form the stepped portion 29iA and the tapered portion.
- the protrusion (caulking protrusion) 52fA may not be press-fitted into the insertion hole (caulking part) 29hA, but may be caulked while being simply inserted.
- FIG. 11 to 13 exemplify a case where a caulking portion (caulking protrusion) is formed on one of the lower yoke (first yoke) 52 and the movable contact 29, the lower yoke (first yoke) 52 is illustrated.
- a caulking portion (caulking protrusion) may be formed on both the first yoke 52 and the movable contact 29.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by caulking means as fixing means.
- the side wall portion (caulking projection: bending raised portion) 52bA formed in the lower yoke (first yoke) 52 is inserted into the notch (caulking portion) 29fA formed in the movable contact 29 (
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed (fixed) by caulking in the press-fitted state.
- FIG. 14 although what crimped 2 places on one side was illustrated, the place to crimp is not limited to this.
- the side wall portion (caulking protrusion: bending raised portion) 52bA may not be press-fitted into the notch (caulking portion) 29fA, but may be caulked in a state where it is simply inserted. Moreover, you may make it form the insertion hole (caulking part) into which the side wall part 52bA is inserted in the movable contact 29.
- a caulking protrusion such as a bent raised part may be formed on the movable contact 29, or a caulking protruding part such as a bent raised part may be formed on both the lower yoke (first yoke) 52 and the movable contact 29.
- a caulking portion such as an insertion hole may be formed at a corresponding position on the other side.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by welding means as fixing means.
- the side wall 52bB formed in the lower yoke (first yoke) 52 is welded in a state of being inserted into the notch 29fB formed in the movable contact 29 (in the present embodiment, press-fitted).
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by welding (fixed).
- the degree of freedom of shape of the lower yoke (first yoke) 52 and the movable contact 29 can be improved. become.
- the side wall 52bB may be welded in a state of being simply inserted without being press-fitted into the notch 29fB.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by welding means as fixing means.
- the protrusion 29gB formed on the lower surface 29d of the movable contact 29 is inserted into the insertion hole 52eB formed in the bottom wall 52a of the lower yoke (first yoke) 52 (in this embodiment, press-fitting
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by welding (fixed).
- the degree of freedom of shape of the lower yoke (first yoke) 52 and the movable contact 29 can be improved. become.
- the protrusion 29gB is formed by applying dowel processing to the movable contact 29.
- a step 52gB is formed in the insertion hole 52eB, and after the protrusion 29gB is welded, the deformed protrusion 29gB is engaged with the step 52gB.
- FIG. 16 also illustrates an example in which two protrusions 29gB are formed, but the number of protrusions 29gB may be one or three or more.
- a tapered portion may be formed in the insertion hole 52eB instead of the stepped portion 52gB, or a tapered portion may be formed in addition to the stepped portion 52gB. It is also possible not to form the stepped portion 52gB and the tapered portion. Further, the protrusion 29gB may be welded in a state of being simply inserted without being press-fitted into the insertion hole 52eB.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by welding means as fixing means.
- a state in which the protrusion 52fB formed on the bottom wall 52a of the lower yoke (first yoke) 52 is inserted into the insertion hole 29hB formed in the movable contact 29 (in this embodiment, a press-fitted state).
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by welding (fixing).
- welding the lower yoke (first yoke) 52 and the movable contact 29 the degree of freedom of shape of the lower yoke (first yoke) 52 and the movable contact 29 can be improved. become.
- the protrusion 52fB is formed by performing doweling on the lower yoke (first yoke) 52.
- a step 29iB is formed in the insertion hole 29hB, and after the protrusion 52fB is welded, the deformed protrusion 52fB is engaged with the step 29iB.
- FIG. 17 also illustrates a case where two protrusions 52fB are formed, but the number of protrusions 52fB may be one or three or more.
- a tapered portion may be formed in the insertion hole 29hB instead of the stepped portion 29iB, or a tapered portion may be formed in addition to the stepped portion 29iB. It is also possible not to form the stepped portion 29iB and the tapered portion. Further, the protrusion 52fB may be welded in a state of being simply inserted without being press-fitted into the insertion hole 29hB.
- the lower yoke (first yoke) 52 and the movable contact 29 are illustrated as having protrusions formed thereon, but the lower yoke (first yoke) 52 is illustrated.
- a protrusion may be formed on both the movable contact 29 and the movable contact 29.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by an adhesive means as a fixing means.
- the lower yoke is formed by applying and bonding an adhesive 80 between the side wall 52bC of the lower yoke (first yoke) 52 and the notch 29fC into which the side wall 52b is inserted.
- the (first yoke) 52 and the movable contact 29 are bonded and fixed (fixed). In this way, by bonding and fixing the lower yoke (first yoke) 52 and the movable contact 29, the degree of freedom of shape of the lower yoke (first yoke) 52 and the movable contact 29 can be improved. It becomes like this.
- the adhesive material 80 is applied to the entire opposing surface of the side wall portion 52bC and the notch portion 29fC is illustrated, but the adhesive material 80 may be applied to a part of the opposing surface.
- at least one of the lower yoke (first yoke) 52 and the movable contact 29 is provided with a protruding portion by doweling or the like, and an adhesive 80 is applied to the protruding portion. It may be inserted into an insertion hole, an insertion recess or the like and fixed by adhesion.
- the lower yoke (first yoke) 52 and the movable contact 29 are fixed by joint means as fixing means.
- the insertion portion 52i extending in the horizontal direction is formed in the side wall portion 52b of the lower yoke (first yoke) 52, and the horizontal portion is formed on the side surface of the portion where the notch 29f of the movable contact 29 is formed.
- An insertion portion 29j that extends in the direction and communicates with the insertion portion 52i when the side wall portion 52b is inserted (press-fitted) into the notch 29f is formed.
- joint member is not limited to the screw 81.
- a rod-shaped member having no thread groove may be used and both ends may be press-fitted into the insertion portion 52i and the insertion portion 29j.
- the side wall portion is inserted (press-fitted) into the cutout.
- the cutout is not provided, and both side wall portions face the side surface of the movable contact 29. It is also possible to adopt a configuration in which it is sandwiched.
- the upper yoke 51 is formed in a substantially rectangular plate shape
- the lower yoke 52 is substantially comprised by the bottom wall part 52a and the side wall part 52b formed so that it may stand up from the both ends of the bottom wall part 52a.
- a U-shaped one was illustrated.
- the shapes of the upper yoke 51 and the lower yoke 52 may be the shapes shown in FIG.
- the upper yoke 51 is disposed by arranging the substantially rectangular plate-shaped upper yoke 51 between the side wall portions 52 b and 52 b of the substantially U-shaped lower yoke 52. And the lower yoke 52 may surround the movable contact 29.
- the movable contact 29 may be surrounded by an L-shaped upper yoke 51 and an L-shaped lower yoke 52.
- the movable contact 29 may be surrounded by a U-shaped upper yoke 51 and a U-shaped lower yoke 52. At this time, as shown in FIG. 20 (d), the opposing surface can be inclined.
- the movable contact 29 may be surrounded by a U-shaped upper yoke 51 and a substantially rectangular plate-shaped lower yoke 52.
- the substantially rectangular plate-like lower yoke 52 is disposed between the side wall portions 51i of the substantially U-shaped upper yoke 51, but as shown in FIG. It is also possible to make the side yoke 52 abut on the side wall portion 51 i of the substantially U-shaped upper yoke 51.
- the lower yoke (first yoke) 52 and the movable contact 29 can be fixed by the method described above.
- FIG. 21 illustrates an example in which the shaft 25 is fixed to a holder 90 having a substantially rectangular side view.
- the movable contact 29 and the compressed contact pressure spring 33 are inserted into the holder 90 in a state surrounded by the upper yoke 51 and the lower yoke 52. This is an example.
- the movable contact 29 surrounded by the upper yoke 51 and the lower yoke 52 is held by the holder 90, so that the position of the lower yoke (first yoke) 52 relative to the movable contact 29 is achieved.
- the shift can be suppressed more reliably, and the operation of the movable contact 29 to be separated from the fixed contact 35a can be more reliably regulated.
- the lower yoke 52 is at least on the lower side of the movable contact 29 ( It is also possible to arrange it on the other side in the drive shaft direction.
- the lower yoke 52 when the lower yoke 52 is not fixed to the movable contact 29 and the power supply is turned off, the lower yoke 52 is spaced apart from the movable contact 29 and the power supply is turned on. It is also possible to cause the movable yoke 29 to be attracted to the lower yoke 52 by the magnetic force generated at the time. At this time, if the lower yoke 52 is formed in a ring shape having the insertion hole 53c and the shaft 25 and the contact pressure spring 33 are inserted into the insertion hole 53c, the shaft 25 and the contact pressure spring 33 function as a guide, The side yoke 52 can be moved relative to the movable contact 29 more smoothly in the vertical direction (drive shaft direction).
- the movable yoke 29 is held by the holder 90, and the lower yoke 52 is at least on the lower side of the movable contact 29 (drive shaft) only when the power is turned on. It is also possible to arrange them on the other side of the direction.
- the holder 90 can function as a guide, and the lower yoke 52 can be moved relative to the movable contact 29 in a vertical direction (drive shaft direction) more reliably and smoothly.
- an insertion hole 29k having a diameter larger than that of the insertion hole 29a is formed at the lower part of the movable contact 29 and communicated with the insertion hole 29a. It may be located above. By doing so, the height of the contact device 1 can be further reduced.
- the lower yoke 52 is formed with a notch 52cA that opens to the side so that the biasing end is positioned above the lower surface of the lower yoke 52.
- the lower yoke 52 is formed with a notch (hole) 52cA that penetrates in the drive axis direction and opens to the side, and a contact pressure spring (biasing portion) is provided in the notch (hole) 52cA.
- 33 (upper end) 33a may be accommodated.
- the fixed terminals 35 and 35 are illustrated as being provided on the opposite side of the drive block 2 (coil or the like) with respect to the movable contact 29.
- the fixed terminals 35 and 35 are provided on the same side as the drive block 2 with respect to the movable contact 29.
- 26 and 27 illustrate an electromagnetic relay 100A on which a contact device 1A configured by integrally combining the drive block 2 positioned at the lower portion and the contact block 3 positioned at the upper portion is illustrated.
- the contact device 1A is housed in a hollow box type case 5, and a pair of main terminals 10 each having a fixed terminal 35 provided with a fixed contact 35a is attached to the case 5.
- the drive block 2 includes a hollow cylindrical coil bobbin 11 around which the coil 13 is wound, and a yoke 6 made of a magnetic material and surrounding the coil bobbin 11.
- the drive block 2 is fixed inside the cylinder of the coil bobbin 11 and magnetized by the energized coil 13, and the fixed iron core 15 is opposed in the vertical direction (axial direction), and the cylinder of the coil bobbin 11. And a movable iron core 17 disposed therein.
- the moving range of the movable iron core 17 is set between an initial position (see FIG. 26) that is spaced upward from the fixed iron core 15 and a contact position (see FIG. 27) that contacts the fixed iron core 15.
- the movable iron core 17 is biased upward (in a direction for returning the movable iron core 17 to the initial position) by a return spring 23 formed of a coil spring. That is, the movable iron core 17 is urged by the return spring 23 in a direction away from the fixed iron core 15 (upper side in FIG. 26).
- the contact block 3 includes a pair of fixed terminals 35 and a movable contact 29 arranged in a manner straddling the pair of fixed contacts 35a.
- the movable contact is provided in the site
- a yoke disposed at least above the movable contact 29 (on the other side in the drive shaft direction) is provided in a state where the movable contact 29b is in contact with the fixed contact 35a (in this embodiment, the power is turned on). ing.
- the yoke is composed of an upper yoke (first yoke) 52 disposed on the upper side of the movable contact 29 and a lower yoke (second yoke) 51 disposed on the lower side of the movable contact 29. It is composed.
- the shaft 25 is provided integrally with the lower yoke (second yoke) 51.
- movable contact 29 is biased downward (one side in the drive shaft direction) by a contact pressure spring (biasing portion) 33 formed of a coil spring.
- the upward biasing force of the movable contact 29 by the return spring 23 is larger than the downward biasing force of the movable contact 29 by the contact pressure spring 33. It has become. Therefore, when the movable iron core 17 is in the initial position, the upward movement of the movable contact 29 is restricted by the stopper 91 provided in the case 5.
- the lower yoke (second yoke) 51 is separated from the movable contact 29 and the return spring 23 biases the movable contact 29 upward. I try to be gone. By doing so, the downward urging force by the contact pressure spring 38 can be applied to the movable contact 29 more efficiently.
- the stopper 91 can be omitted by appropriately adjusting the urging force of the return spring 23 and the contact pressure spring 33. Specifically, when the movable iron core 17 is in the initial position, the fixed contact 35a and the movable contact are separated from each other, and the distance between the fixed contact 35a and the movable contact is equal to or less than the moving distance of the movable iron core 17. In this state, adjustment may be made so that the urging forces of the return spring 23 and the contact pressure spring 33 applied to the movable contact 29 are balanced. In this way, it is possible to suppress the movable contact 29 from moving upward or downward without providing the stopper 91.
- the contact device 1 in which the upper surface 15e of the protrusion 15d is a spring receiving portion of the contact pressure spring 33 is illustrated.
- the contact device 1 ⁇ / b> B in which the spring receiving portion 49 b of the contact pressure spring 33 is formed in the peripheral portion of the insertion hole 49 a of the pressing plate 49 can be used.
- the coil 13 is wound around each of a plurality (two) of coil bobbins 11, but as shown in FIGS.
- the coil 13 may be wound around one coil bobbin 11.
- FIG. 28 illustrates the movable contact 29 and the lower yoke 52 fixed by the method shown in FIG. 9, but those fixed by other methods or both are not fixed. It is also possible.
- the pressing state of the movable contact 29 by the contact pressure spring (biasing portion) 33 can be the states shown in FIGS.
- the movable contact 29 is provided with a protrusion 29m that is inserted into the insertion hole 52c of the lower yoke 52.
- the protrusion 29m has a lower surface above the lower surface of the lower yoke (first yoke) 52 (the surface on the other side of the yoke 50 in the drive axis direction) 52d (one side in the drive axis direction: the movable contact 29 side). ).
- the contact pressure spring (biasing portion) 33 directly presses the movable contact 29 which is a member different from the yoke 50 and applies an upward biasing force to the movable contact 29 (biasing end). 33a.
- the upper end (biasing end) 33a of the contact pressure spring (urging portion) 33 is above the lower surface (the surface on the other side in the drive axis direction of the yoke 50) 52d of the lower yoke (first yoke) 52 ( One side in the drive axis direction: the movable contact 29 side).
- the cross-sectional area of the movable contact 29 increases by the amount provided with the protrusion 29m, so that the energization area can be increased and the energization performance can be further improved. .
- the movable contact 29 is formed with a protrusion 29m to be inserted into the insertion hole 52c of the lower yoke 52.
- the protrusion 29m is formed so that the lower surface thereof is flush with the lower surface of the lower yoke (first yoke) 52 (the surface on the other side in the drive axis direction of the yoke 50) 52d.
- the contact pressure spring (biasing portion) 33 directly presses the movable contact 29 which is a member different from the yoke 50 and applies an upward biasing force to the movable contact 29 (biasing end). 33a, and the upper end (urging end) 33a of the contact pressure spring (urging portion) 33 presses the lower surface of the protrusion 29m.
- the upper end (biasing end) 33a of the contact pressure spring (urging portion) 33 is flush with the lower surface (the surface on the other side in the drive axis direction of the yoke 50) 52d of the lower yoke (first yoke) 52. I am doing so.
- the cross-sectional area of the movable contact 29 increases by the amount provided with the protrusion 29m, so that the energization area can be increased and the energization performance can be further improved. .
- the energization performance can be further improved while suppressing the increase in the height direction (vertical direction: drive shaft direction) of the contact device as much as possible. It becomes like this.
- the movable contact 29 is formed with a protrusion 29m to be inserted into the insertion hole 52c of the lower yoke 52.
- the protrusion 29m has a lower surface located on a lower side (the other side in the drive shaft direction) 52d than a lower surface (the other side surface of the yoke 50 in the drive shaft direction) 52d of the lower yoke (first yoke) 52. Is formed.
- the contact pressure spring (biasing portion) 33 directly presses the movable contact 29 which is a member different from the yoke 50 and applies an upward biasing force to the movable contact 29 (biasing end). 33a, and the upper end (urging end) 33a of the contact pressure spring (urging portion) 33 presses the lower surface of the protrusion 29m.
- the upper end (urging end) 33a of the contact pressure spring (urging portion) 33 is below the lower surface (the surface on the other side in the drive axis direction of the yoke 50) 52d of the lower yoke (first yoke) 52 ( It is located on the other side in the drive shaft direction.
- the cross-sectional area of the movable contact 29 increases by the amount provided with the protrusion 29m, so that the energization area can be increased and the energization performance can be further improved.
- a desired energization performance can be obtained by appropriately adjusting the amount of protrusion from the lower surface 52d of the lower yoke 52 of the protrusion 29m.
- a flange portion or the like may be provided at a portion protruding downward from the lower surface 52d of the lower yoke 52 of the protruding portion 29m so as to overlap the lower surface 52d when viewed from the drive shaft direction. At this time, the flange portion or the like may press the lower surface 52d, and the upper end (urging end) 33a may indirectly press the yoke 50 upward.
- a spacer 92 formed of a member different from the yoke 50 and the movable contact 29 is inserted into the insertion hole 52c of the lower yoke 52.
- the lower surface of the spacer 92 is above the lower surface (the surface on the other side of the yoke 50 in the drive axis direction) 52d of the lower yoke (first yoke) 52 (one side in the drive axis direction: the movable contact 29 side). It is formed so that it may be located in.
- the contact pressure spring (biasing portion) 33 presses a spacer 92 which is a member different from the movable contact 29 and applies an upward biasing force to the movable contact 29 (biasing end) 33a.
- the upper end (biasing end) 33a of the contact pressure spring (urging portion) 33 presses the lower surface of the protrusion 29m.
- the upper end (biasing end) 33a of the contact pressure spring (urging portion) 33 is above the lower surface (the surface on the other side in the drive axis direction of the yoke 50) 52d of the lower yoke (first yoke) 52 ( One side in the drive axis direction: the movable contact 29 side).
- a spacer 92 formed of a member different from the yoke 50 and the movable contact 29 is inserted into the insertion hole 52c of the lower yoke 52.
- the spacer 92 is formed so that the lower surface thereof is flush with the lower surface of the lower yoke (first yoke) 52 (the surface on the other side in the drive axis direction of the yoke 50) 52d.
- the contact pressure spring (biasing portion) 33 presses a spacer 92 which is a member different from the movable contact 29 and applies an upward biasing force to the movable contact 29 (biasing end) 33a.
- the upper end (biasing end) 33a of the contact pressure spring (urging portion) 33 presses the lower surface of the protrusion 29m.
- the upper end (biasing end) 33a of the contact pressure spring (urging portion) 33 is flush with the lower surface (the surface on the other side in the drive axis direction of the yoke 50) 52d of the lower yoke (first yoke) 52. I am doing so.
- a spacer 92 formed of a member different from the yoke 50 and the movable contact 29 is inserted into the insertion hole 52c of the lower yoke 52.
- the spacer 92 is formed such that its lower surface is located on the lower side (the other side in the drive shaft direction) 52d of the lower surface (the other side in the drive shaft direction of the yoke 50) 52d of the lower yoke (first yoke) 52. Has been.
- the contact pressure spring (biasing portion) 33 presses a spacer 92 which is a member different from the movable contact 29 and applies an upward biasing force to the movable contact 29 (biasing end) 33a.
- the upper end (biasing end) 33a of the contact pressure spring (urging portion) 33 presses the lower surface of the protrusion 29m.
- the upper end (urging end) 33a of the contact pressure spring (urging portion) 33 is below the lower surface (the surface on the other side in the drive axis direction of the yoke 50) 52d of the lower yoke (first yoke) 52 ( It is located on the other side in the drive shaft direction.
- a flange portion or the like may be provided at a portion protruding downward from the lower surface 52d of the lower yoke 52 of the spacer 92 so as to overlap the lower surface 52d when viewed from the drive shaft direction. At this time, the flange portion or the like may press the lower surface 52d, and the upper end (urging end) 33a may indirectly press the yoke 50 upward.
- the material and shape of the spacer, the arrangement location, etc. can be designed appropriately.
- a member other than the yoke 50 and the movable contact 29 is interposed between the upper end (biasing end) 33a of the contact pressure spring (biasing portion) 33 and the movable contact 29, so that the yoke 50 and the movable contact 29 are movable.
- the movable contact 29 may be biased upward via a member different from the contact 29.
- the lower yoke (• BR> ⁇ P yoke) 52 and the movable contact 29 may not be fixed, or may be fixed.
- the lower yoke (first yoke) 52 and the movable contact 29 can be fixed by the fixing means described above.
- the protrusion 29m is press-fitted into the insertion hole 52c of the lower yoke 52 so that it can move with the lower yoke (first yoke) 52.
- the contact 29 may be fixed.
- the protrusion 29m may be press-fitted into the insertion hole 52c of the lower yoke 52 while using the fixing means described above.
- the upper end (biasing end) 33a of the contact pressure spring (biasing portion) 33 is brought into contact with the lower surface 52d exposed to the outside of the lower yoke 52.
- the diameter of the contact pressure spring 33 is increased so that the lower yoke 52 is included in a circle drawn by the contact pressure spring 33 as viewed from the drive shaft direction.
- each contact pressure spring (biasing portion) 33 is applied to the lower surface 52 d exposed to the outside of the lower yoke 52. I try to contact them. That is, the upper end (biasing end) 33 a of each contact pressure spring 33 presses a member (movable contact 29) different from the yoke 50 without directly pressing the yoke 50, thereby moving the movable contact 29. An upward urging force is applied to this.
- the movable contactor 29 is positioned above the lower surface 52d of the lower yoke (first yoke) 52 and does not contact the lower yoke 52 (yoke 50). It suffices to have at least one biasing end for applying an upward biasing force.
- the contact pressure spring (biasing portion) 33 and two auxiliary springs constitute an urging portion, and only the upper end (biasing end) 33a of the contact pressure spring (biasing portion) 33 is the lower yoke 52 (yoke 50).
- the upper ends (biasing ends) of the other two auxiliary springs may be in contact with the lower yoke 52 (yoke 50).
- the upper ends (biasing ends) of the other two auxiliary springs are brought into contact with the lower yoke 52 (yoke 50) via a member (movable contact 29 or other member) different from the yoke 50. It is also possible to do.
- both leaf spring 33A is used, and both ends (biasing ends: two upper ends in FIG. 37) 33aA of the lower surface 52d exposed to the outside of the lower yoke 52 are brought into contact with each other. I try to let them. Then, both ends 33aA of the leaf spring 33A serve as urging ends that directly press the movable contact 29 which is a member different from the yoke 50 and apply an upward urging force to the movable contact 29. .
- one contact pressure spring 33 is bent into a U-shape, and both ends 33a directly press the movable contact 29 which is a member different from the yoke 50, and bias the upward force to the movable contact 29. It is made to become the urging end which acts.
- two contact pressure springs 33 bent in a U shape are illustrated, but the number of contact pressure springs used and the number of contact pressure springs bent in a U shape should be set as appropriate. Can do.
- the movable contact 29 is surrounded by the upper yoke 51 and the lower yoke 52, but only the lower yoke 52 may be provided.
- the shape of the lower yoke 52 is not limited to the above, and at least below the movable contact 29 when the movable contact 29b is in contact with the fixed contact 35a (in this embodiment, the power is turned on). As long as it is arranged on the side (the other side in the drive shaft direction) (arranged in contact with the lower surface 29d), it can have various shapes.
- the flange portion 25a of the shaft 25 may also serve as the upper yoke.
- press-fitting protrusion and the caulking protrusion by a method other than doweling.
- movable contacts can be changed as appropriate.
- fixed terminals can be changed as appropriate.
- other detailed specifications shape, size, layout, etc.
- a contact device that can further improve the degree of freedom of arrangement of the urging portion that urges the movable contact and an electromagnetic relay equipped with the contact device.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Contacts (AREA)
- Electromagnets (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
Description
Claims (26)
- 固定接点が形成された固定端子と、前記固定接点に接離する可動接点が形成された可動接触子と、を有する接点ブロックと、
前記可動接触子が取り付けられる駆動軸を有し、前記固定接点に前記可動接点が接離するように当該可動接触子を駆動する駆動ブロックと、
を備え、
前記接点ブロックは、
前記可動接触子を駆動軸方向の一方側に付勢する付勢部と、
前記可動接点が前記固定接点に当接した状態において、少なくとも前記可動接触子の前記駆動軸方向の他方側に配置されるヨークと、
を備え、
前記付勢部は、前記ヨークとは別の部材を押圧して前記可動接触子に付勢力を作用させる付勢端を有することを特徴とする接点装置。 - 前記付勢端は、前記ヨークの前記駆動軸方向他方側の面よりも前記駆動軸方向一方側に位置することを特徴とする請求項1に記載の接点装置。
- 前記付勢端は、前記ヨークの前記駆動軸方向他方側の面と面一または前記ヨークの前記駆動軸方向他方側の面よりも前記駆動軸方向他方側に位置することを特徴とする請求項1に記載の接点装置。
- 前記付勢部が前記可動接触子を直接付勢することを特徴とする請求項1~3のうちいずれか1項に記載の接点装置。
- 前記付勢部が、前記可動接触子とは別の部材を押圧して前記可動接触子を付勢することを特徴とする請求項1~3のうちいずれか1項に記載の接点装置。
- 前記ヨークには、少なくとも前記駆動軸方向に貫通する孔部が形成されており、前記付勢端が前記孔部内に収容されていることを特徴とする請求項1~5のうちいずれか1項に記載の接点装置。
- 前記ヨークは、少なくとも前記可動接触子の前記駆動軸方向の他方側に配置される部位を含む第1ヨークを備えており、
前記第1ヨークと前記可動接触子とが固定手段により固定されていることを特徴とする請求項1~6のうちいずれか1項に記載の接点装置。 - 前記固定手段が、前記第1ヨークおよび前記可動接触子のうち少なくともいずれか一方に形成された圧入部を、他方に形成された被圧入部に圧入することで固定する圧入手段を含むことを特徴とする請求項7に記載の接点装置。
- 前記圧入部は、前記第1ヨークおよび前記可動接触子のうち少なくともいずれか一方に形成された圧入突部を含むことを特徴とする請求項8に記載の接点装置。
- 前記圧入突部は、ダボ加工により形成された突起部を含むことを特徴とする請求項9に記載の接点装置。
- 前記被圧入部は、前記圧入突部が挿入される挿通孔および挿通凹部のうち少なくともいずれか一方を含むことを特徴とする請求項9または請求項10に記載の接点装置。
- 前記被圧入部は、段差部を有することを特徴とする請求項11に記載の接点装置。
- 前記被圧入部は、テーパ部を有することを特徴とする請求項11または請求項12に記載の接点装置。
- 前記圧入突部は、前記第1ヨークおよび前記可動接触子のうち少なくともいずれか一方に形成された曲げ起こし部を含むことを特徴とする請求項9~13のうちいずれか1項に記載の接点装置。
- 前記固定手段が、前記第1ヨークおよび前記可動接触子のうち少なくともいずれか一方に形成されたカシメ部を、他方に形成された被カシメ部にカシメることで固定するカシメ手段を含むことを特徴とする請求項7~14のうちいずれか1項に記載の接点装置。
- 前記カシメ部は、前記第1ヨークおよび前記可動接触子のうち少なくともいずれか一方に形成されたカシメ突部を含むことを特徴とする請求項15に記載の接点装置。
- 前記カシメ突部は、ダボ加工により形成された突起部を含むことを特徴とする請求項16に記載の接点装置。
- 前記被カシメ部は、前記カシメ突部が挿入される挿通孔を含むことを特徴とする請求項16または請求項17に記載の接点装置。
- 前記被カシメ部は、段差部を有することを特徴とする請求項18に記載の接点装置。
- 前記被カシメ部は、テーパ部を有することを特徴とする請求項18または請求項19に記載の接点装置。
- 前記カシメ突部は、前記挿通孔に圧入された状態でカシメられることを特徴とする請求項18~20のうちいずれか1項に記載の接点装置。
- 前記カシメ突部は、前記第1ヨークおよび前記可動接触子のうち少なくともいずれか一方に形成された曲げ起こし部を含むことを特徴とする請求項15~21のうちいずれか1項に記載の接点装置。
- 前記固定手段が、前記第1ヨークと前記可動接触子とを溶接することで固定する溶接手段を含むことを特徴とする請求項7~22のうちいずれか1項に記載の接点装置。
- 前記固定手段が、前記第1ヨークと前記可動接触子とを接着材を介して固定する接着手段を含むことを特徴とする請求項7~23のうちいずれか1項に記載の接点装置。
- 前記固定手段が、前記第1ヨークと前記可動接触子とに形成された挿通部に継手部材を挿通することで固定する継手手段を含むことを特徴とする請求項7~24のうちいずれか1項に記載の接点装置。
- 請求項1~25のうちいずれか1項に記載の接点装置が搭載されていることを特徴とする電磁継電器。
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CN201480035342.5A CN105359243B (zh) | 2013-06-28 | 2014-06-27 | 触点装置以及搭载有该触点装置的电磁继电器 |
US14/392,130 US10090127B2 (en) | 2013-06-28 | 2014-06-27 | Contact device and electromagnetic relay mounted with same |
JP2015523866A JP6358442B2 (ja) | 2013-06-28 | 2014-06-27 | 接点装置および当該接点装置を搭載した電磁継電器 |
US16/103,323 US10991532B2 (en) | 2013-06-28 | 2018-08-14 | Contact device and electromagnetic relay mounted with same |
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US14/392,130 A-371-Of-International US10090127B2 (en) | 2013-06-28 | 2014-06-27 | Contact device and electromagnetic relay mounted with same |
US16/103,323 Division US10991532B2 (en) | 2013-06-28 | 2018-08-14 | Contact device and electromagnetic relay mounted with same |
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Also Published As
Publication number | Publication date |
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CN105359243B (zh) | 2018-06-05 |
CN108417448A (zh) | 2018-08-17 |
US10090127B2 (en) | 2018-10-02 |
JP6653453B2 (ja) | 2020-02-26 |
JP6358442B2 (ja) | 2018-07-18 |
US20190035586A1 (en) | 2019-01-31 |
US20160155592A1 (en) | 2016-06-02 |
JPWO2014208098A1 (ja) | 2017-02-23 |
CN105359243A (zh) | 2016-02-24 |
CN108417448B (zh) | 2021-03-05 |
JP6910014B2 (ja) | 2021-07-28 |
US10991532B2 (en) | 2021-04-27 |
JP2020064871A (ja) | 2020-04-23 |
JP2018133347A (ja) | 2018-08-23 |
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