CN114600217B - Contact switch and connection auxiliary pin - Google Patents
Contact switch and connection auxiliary pin Download PDFInfo
- Publication number
- CN114600217B CN114600217B CN201980101366.9A CN201980101366A CN114600217B CN 114600217 B CN114600217 B CN 114600217B CN 201980101366 A CN201980101366 A CN 201980101366A CN 114600217 B CN114600217 B CN 114600217B
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- Prior art keywords
- wire insertion
- conductor
- contact
- conductive metal
- insertion portion
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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
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H61/00—Electrothermal relays
- H01H61/01—Details
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
Abstract
The device comprises: a housing (100) having a wire insertion section (4) into which a wire connected to a power source for supplying power to a load device is inserted, and a wire insertion section (5) into which a wire connected to the load device is inserted, the wire insertion section (4) and the wire insertion section (5) each opening in the front direction; a conductive metal member (10) provided to the wire insertion section (4) and the wire insertion section (5), respectively; and an opening/closing section (60) for switching between electrically connecting the conductive metal material (10) of the wire insertion section (4) and the conductive metal material (10) of the wire insertion section (5) and insulating the same, wherein the housing (100) has a conductor insertion opening capable of inserting a rod-shaped connection conductor from the 1 st direction, which is the arrangement direction of the wire insertion section (4) and the wire insertion section (5), to the contact with the conductive metal material (10) of the wire insertion section (4) or the conductive metal material (10) of the wire insertion section (5).
Description
Technical Field
The present invention relates to a contact switch for opening and closing a current path, and a connection auxiliary pin for assisting electrical connection between the contact switch and an expansion device.
Background
The contact switch for opening and closing the current path has a terminal connected to a power source via a wire and a terminal connected to a load via a wire. The electric wires connected to the terminals of the contact shutter are stripped of the insulating coating layer at the end portions, and the connection terminals for connection to the terminals are mounted on the stripped portions of the insulating coating layer. The terminals of the contact shutter include 2 types of screw terminals and spring terminals.
The screw terminal has a screw attached with a washer and a conductive metal member, and the screw attached with the washer is fastened to a screw hole formed in the conductive metal member, whereby the connection terminal is pressure-bonded to the conductive metal member via the washer. Thereby, the conductive metal member and the connection terminal are electrically conducted. The fastening of the screw to the conductive metal is performed using a tool such as a screwdriver. The screw is disposed with the screw head facing the front so that the user of the contact switch can tighten the screw from the front. When the connection terminal of the electric wire connected to the power supply is connected to the screw terminal of the contact shutter, the connection terminal is inserted between the gasket and the conductive metal member in the arrangement direction of the power supply side terminal and the load side terminal.
On the other hand, the spring type terminal has a conductive metal member formed with a frame portion and a leaf spring-like spring fitted into the frame portion, and the connection terminal inserted into the frame portion is held by the pressure of the spring. Thereby, the conductive metal member and the connection terminal are electrically conducted. The contact switch having the spring terminal is such that the opening of the wire insertion portion faces the front face, and the connection terminal is inserted from the front face of the contact switch.
The contact shutter having the spring terminal completes wiring by inserting the connection terminal of the wire into the wire insertion portion, and thus the wiring work can be performed with fewer man-hours than the contact shutter having the screw terminal. Therefore, in recent years, contact shutters having spring terminals are being used more and more.
When an extension device such as a connection conductor unit for connecting a thermal relay and other devices is connected to a contact switch, a power-side terminal or a load-side terminal is used. The extension device combined with the contact switch has a connection conductor for combination. When the extension device is coupled to the contact switch having the screw-type terminal, the connection conductor of the extension device is inserted between the gasket and the conductive metal member in the arrangement direction of the terminal on the power supply side and the terminal on the load side, and the connection conductor of the extension device is crimped by the conductive metal member and the gasket. On the other hand, in the case of combining the extension device with the contact shutter having the spring terminal, the connection conductor of the extension device is inserted into the wire insertion portion of the spring terminal from the front surface of the contact shutter.
As described above, the contact shutter having the screw terminal and the contact shutter having the spring terminal are different in the direction in which the connection conductor of the extension device is inserted. Further, an extension device for a contact switch having screw terminals is coupled to the contact switch in the direction in which the terminals on the power supply side and the terminals on the load side are arranged. On the other hand, an extension device for a contact shutter having spring terminals is coupled to the front surface of the contact shutter. Therefore, when the contact switch having the screw terminal is replaced with the contact switch having the spring terminal, the extension device for the contact switch having the screw terminal cannot be coupled.
Patent document 1 discloses a connection unit for converting a connection conductor for a screw terminal into a connection conductor for a spring terminal. If the coupling unit disclosed in patent document 1 is used, the extension device for the screw terminal can be coupled to the contact shutter having the spring terminal.
Patent document 1: japanese patent application laid-open No. 2018-190574
Disclosure of Invention
However, the connecting unit disclosed in patent document 1 requires man-hours for connecting the expansion device and the connecting unit, and therefore, the man-hours for wiring work are prevented from being reduced.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a contact switch for an extension device for connecting screw terminals, which can suppress an increase in man-hours even if the contact switch has a spring terminal.
In order to solve the above problems and achieve the object, the present invention provides a contact switch comprising: a housing having a 1 st wire insertion portion into which a wire connected to a power source for supplying power to the load device is inserted, and a 2 nd wire insertion portion into which a wire connected to the load device is inserted, the 1 st wire insertion portion and the 2 nd wire insertion portion each being open in a front direction; a conductive metal member provided in the 1 st wire insertion portion and the 2 nd wire insertion portion, respectively; and an opening/closing section for switching whether to electrically connect or insulate the conductive metal member of the 1 st wire insertion section and the conductive metal member of the 2 nd wire insertion section. The frame body has a conductor insertion opening capable of inserting a rod-shaped connection conductor from the 1 st direction, which is the arrangement direction of the 1 st wire insertion portion and the 2 nd wire insertion portion, to contact with the conductive metal material of the 1 st wire insertion portion or the conductive metal material of the 2 nd wire insertion portion.
ADVANTAGEOUS EFFECTS OF INVENTION
The contact switch according to the present invention has an effect that an expansion device for a screw terminal can be connected while suppressing an increase in man-hours even if the contact switch has a spring terminal.
Drawings
Fig. 1 is an oblique view of a contact switch according to embodiment 1 of the present invention.
Fig. 2 is an oblique view of the contact switch according to embodiment 1.
Fig. 3 is a front view of the contact switch according to embodiment 1.
Fig. 4 is a cross-sectional view of the contact switch according to embodiment 1.
Fig. 5 is an oblique view of a housing of the contact switch according to embodiment 1.
Fig. 6 is a plan view of a housing of the contact switch according to embodiment 1.
Fig. 7 is a cross-sectional view of a case according to embodiment 1.
Fig. 8 is an oblique view of a conductive metal material of the contact switch according to embodiment 1.
Fig. 9 is an oblique view of a conductive metal material of the contact switch according to embodiment 1.
Fig. 10 is an oblique view of a thermal relay coupled to a contact switch according to embodiment 1.
Fig. 11 is an exploded perspective view of an electromagnetic shutter in which the contact shutter according to embodiment 1 and the thermal relay are combined.
Fig. 12 is a front view of an electromagnetic shutter in which the contact shutter according to embodiment 1 and the thermal relay are combined.
Fig. 13 is a cross-sectional view of a coupling portion between the contact switch and the thermal relay according to embodiment 1.
Fig. 14 is a diagram showing a modification of the conductive metal material of the contact switch according to embodiment 1.
Fig. 15 is an oblique view of a connection auxiliary pin according to embodiment 2 of the present invention.
Fig. 16 is a plan view of a connection auxiliary pin according to embodiment 2.
Fig. 17 is an oblique view of an electromagnetic switch in which the contact switch and the thermal relay according to embodiment 1 are coupled using a connection auxiliary pin according to embodiment 2.
Fig. 18 is a front view of an electromagnetic switch in which the contact switch and the thermal relay according to embodiment 1 are coupled using a connection auxiliary pin according to embodiment 2.
Fig. 19 is a cross-sectional view of the electromagnetic switch in which the contact switch and the thermal relay according to embodiment 1 are coupled using the connection auxiliary pin according to embodiment 2.
Fig. 20 is a cross-sectional view of the electromagnetic switch in which the contact switch and the thermal relay according to embodiment 1 are coupled using the connection auxiliary pin according to embodiment 2.
Fig. 21 is a cross-sectional view of the connection auxiliary pin according to embodiment 2 when not in use.
Fig. 22 is a cross-sectional view of the connection auxiliary pin according to embodiment 2 after being pushed into the electromagnetic shutter.
Detailed Description
The contact switch and the connection auxiliary pin according to the embodiment of the present invention will be described in detail below with reference to the drawings. The present invention is not limited to the present embodiment.
Embodiment 1
Fig. 1 is an oblique view of a contact switch according to embodiment 1 of the present invention. Fig. 2 is an oblique view of the contact switch according to embodiment 1. Fig. 3 is a front view of the contact switch according to embodiment 1. Fig. 4 is a cross-sectional view of the contact switch according to embodiment 1. Fig. 4 shows a section along line IV-IV in fig. 3. The housing 100 of the contact switch 1 has a case 2 and a rear case 3. The case 2 and the rear case 3 are formed of an insulating material. The contact switch 1 has: a wire insertion unit 4 into which a wire connected to a power source for supplying power to a load device is inserted; a wire insertion section 5 into which a wire connected to a load device is inserted; and a wire insertion section 6 into which a wire for operating the contact switch 1 is inserted. The wire insertion portion 4 as the 1 st wire insertion portion and the wire insertion portion 5 as the 2 nd wire insertion portion have the same structure and are symmetrically arranged with respect to a plane α passing through the center of the contact shutter 1 shown in fig. 3.
In the contact shutter 1, the 1 st direction, which is the arrangement direction of the 1 st wire insertion portion 4 as the 1 st wire insertion portion and the 2 nd wire insertion portion 5, is set as the up-down direction. The 2 nd direction perpendicular to the 1 st direction in the arrangement direction of the case 2 and the rear case 3 is set as the front-rear direction. The 3 rd direction orthogonal to both the 1 st direction and the 2 nd direction is set as the left-right direction. The case 2 side is the front of the contact switch 1, and the rear case 3 side is the rear of the contact switch 1. The side where the wire insertion portion 4 is provided is the upper side of the contact switch 1, and the side where the wire insertion portion 5 is provided is the lower side of the contact switch 1. The left hand side in the direction from the rear to the front of the contact switch 1 is the left side of the contact switch 1, and the right hand side in the direction from the rear to the front of the contact switch 1 is the right side of the contact switch 1. Hereinafter, the structure of the contact switch 1 will be described in a coordinate system composed of an X axis extending in the front-rear direction, a Y axis extending in the left-right direction, and a Z axis extending in the up-down direction. Depending on the posture of the contact switch 1 when it is installed, the vertical direction of the contact switch 1 may not coincide with the vertical direction.
As shown in fig. 4, the wire insertion sections 4, 5, 6 include: an insertion port member 7 having an opening; spring terminals 8; and a housing 9 that constitutes a part of the frame 100. The spring terminal 8 is composed of a conductive metal member 10 fixed to the case 2 and a spring 11 engaged with a frame portion 10a of the conductive metal member 10. The spring terminal 8 clamps a connection terminal attached to an end portion of the electric wire between the frame portion 10a and the spring 11, thereby pressing the connection terminal against the conductive metal member 10 by the elastic force of the spring 11 to electrically connect the conductive metal member 10 and the electric wire. The spring terminal 8 can also be made conductive by directly sandwiching the end of the electric wire, from which the core wire is exposed, by peeling the insulating coating layer.
As shown in fig. 3 and 4, the insertion port member 7 fixes the opening 7a to the housing 9 and the case 2 toward the front of the contact switch 1. When wiring the electric wire to the contact shutter 1, if a connection terminal attached to an end of the electric wire is inserted into the cylindrical portion 7b of the insertion port member 7, the connection terminal is guided between the frame portion 10a and the spring 11. The insertion port member 7 is provided with a tool insertion port 7c for removing the electric wire and an electricity test hole 7d for inserting a tester for testing electricity. By inserting a tool into the tool insertion port 7c, a gap is formed between the frame 10a and the spring 11, and the electric wire can be detached. In addition, by inserting the tester into the electricity test hole 7d, the tip of the tester is brought into contact with the spring 11, and conduction can be confirmed. The case 9 is arranged to cover the frame 10a and the spring 11, thereby ensuring insulation.
As shown in fig. 4, the contact switch 1 has an opening/closing portion 60, and the opening/closing portion 60 switches whether to electrically connect or insulate the conductive metal 10 of the wire insertion portion 4 and the conductive metal 10 of the wire insertion portion 5. The opening/closing unit 60 includes: an electromagnet portion 61 including a fixed core 52, an operating coil 66, and a movable core 54; and a movable portion 62 having a cross bar 57 and a movable contact 41. The operation coil 66 is wound around the center leg of the fixed core 52. The movable core 54 is disposed to face the fixed core 52 with a gap. The cross bar 57 is connected to the movable core 54 via a connecting plate 59 formed of an insulating material. The movable contact 41 is disposed in a holding hole provided in the head of the cross bar 57, and the conductive metal 10 of the wire insertion portion 4 and the conductive metal 10 of the wire insertion portion 5 are opposed to each other. The movable contact 41 is in contact with both the conductive metal 10 of the wire insertion portion 4 and the conductive metal 10 of the wire insertion portion 5, and thus a current flows to form a circuit. The contact switch 1 has five wire insertion portions 4 and 5. The three wire insertion portions 4 at the center in the Y direction constitute a main contact for opening and closing a circuit through which a large current flows, and the two wire insertion portions 4 at the end in the Y direction constitute auxiliary contacts for opening and closing a circuit through which a small current flows. The three wire insertion portions 5 at the center in the Y direction constitute main contacts for opening and closing a circuit through which a large current flows, and the two wire insertion portions 5 at the end in the Y direction constitute auxiliary contacts for opening and closing a circuit through which a small current flows.
Fig. 5 is an oblique view of a housing of the contact switch according to embodiment 1. Fig. 6 is a plan view of a housing of the contact switch according to embodiment 1. Fig. 7 is a cross-sectional view of a case according to embodiment 1. Fig. 7 shows a section along line VII-VII in fig. 6. The case 9 has a conductor insertion opening 9a, and the conductor insertion opening 9a guides the rod-shaped connection conductor of the expansion device to a portion that contacts the conductive metal member 10. The conductor insertion opening 9a is provided at a portion facing upward or downward when the housing 9 is assembled to the case 2. Therefore, the contact switch 1 can insert the rod-shaped connection conductor of the extension device from the up-down direction. The conductor insertion opening 9a is closed by a thin portion 9b so as to prevent dust from entering the inside of the contact switch 1 from the outside. The thickness of the thin portion 9b is a thickness that can be pierced by a rod-shaped rigid body. If an example is given, the thin portion 9b can be pierced by the rod-shaped rigid body by setting the thickness of the thin portion 9b to 0.3mm or less. Further, by providing the case 9 with an opening having the same size as the connection conductor of the expansion device, the rod-shaped rigid body can be penetrated, and the possibility of dust intrusion can be reduced. The direction in which the rod-shaped connection conductor of the expansion device is inserted into the conductor insertion port 9a may not be completely aligned with the up-down direction. That is, when the direction in which the rod-shaped connection conductor of the expansion device is inserted into the conductor insertion port 9a has an inclination within the limits of the design with respect to the up-down direction, the direction in which the rod-shaped connection conductor of the expansion device is inserted into the conductor insertion port 9a can be regarded as the up-down direction.
Fig. 8 is an oblique view of a conductive metal material of the contact switch according to embodiment 1. Fig. 9 is an oblique view of a conductive metal material of the contact switch according to embodiment 1. Hereinafter, the shape of the conductive metal material 10 will be described assuming that the conductive metal material 10 is used for the spring terminal 8 of the load-side wire insertion portion 5. Since the wire insertion portion 4 and the wire insertion portion 5 have the same structure and are symmetrically disposed with respect to the surface α passing through the center of the contact shutter 1, the following description will be reversed in the right-left and up-down directions when the conductive metal member 10 is used for the spring terminal 8 of the wire insertion portion 4.
The conductive metal member 10 has: a 1 st part 31 provided at one end; a 2 nd portion 32 extending rearward from an upper end portion of the 1 st portion 31; a 3 rd portion 33 folded back downward from the left end portion of the 2 nd portion 32; a 4 th portion 34 extending downward from the rear end portion of the 3 rd portion 33; a 5 th portion 35 extending rearward from a lower end portion of the 4 th portion 34; and a 6 th portion 36 extending upward from the rear end portion of the 5 th portion 35. The 3 rd and 5 th portions 33 and 35 of the conductive metal member 10 face the upper surface of the housing 100. The 1 st part 31 is provided with a frame part 10a which is in contact with a connection terminal mounted on an end of the electric wire. The 3 rd portion 33 is provided with a conductor contact portion 10b that contacts the connection conductor of the expansion device. The conductor contact portion 10b is provided at the right end portion of the 3 rd portion 33. The movable contact 41 is brought into contact with or separated from the 6 th portion 36, and thereby the energization and disconnection between the power source and the load device are switched.
The conductor contact portion 10b has: a curved surface portion 22 that continuously changes in direction from the lower direction to the front direction; a plane portion 21 located in front of the curved surface portion 22 on the XY plane; and a conductor pressing portion 23 that protrudes forward on the XY plane than the plane portion 21.
Fig. 10 is an oblique view of a thermal relay coupled to a contact switch according to embodiment 1. The thermal relay 12 is disposed on the load side of the contact switch 1 in the wiring path to constitute an electromagnetic switch. In the following description, the front and rear, left and right, and up and down of the thermal relay 12 are defined so as to coincide with the front and rear, left and right, and up and down when the thermal relay 12 is coupled to the contact switch 1. The housing 110 of the thermal relay 12 is formed of a lower case 13 and an upper cover 14. The thermal relay 12 is an extension device for a contact switch having a screw terminal, and therefore a rod-shaped connection conductor 15 protrudes from the cover 14 to extend in an upward direction.
Fig. 11 is an exploded perspective view of an electromagnetic shutter in which the contact shutter according to embodiment 1 and the thermal relay are combined. Fig. 12 is a front view of an electromagnetic shutter in which the contact shutter according to embodiment 1 and the thermal relay are combined. Fig. 13 is a cross-sectional view of a coupling portion between the contact switch and the thermal relay according to embodiment 1. Fig. 13 shows a section along line XIII-XIII in fig. 12. When the contact switch 1 and the thermal relay 12 are combined, the rod-shaped connection conductor 15 of the thermal relay 12 is inserted into the conductor insertion opening 9a provided in the housing 9 disposed on the lower surface side of the contact switch 1. The connection conductor 15 inserted into the conductor insertion port 9a is in contact with the conductor contact portion 10b of the conductive metal 10 disposed inside the housing 9. At this time, the connection conductor 15 is guided forward by the curved surface portion 22 of the conductor contact portion 10b, and the flat surface portion 21 is in contact with the side surface 15a of the connection conductor 15.
When the connection conductor 15 of the thermal relay 12 is inserted into the contact switch 1 from below, the side surface 15a of the connection conductor 15, which is in contact with the curved surface portion 22 and is in a state of being deflected forward, contacts the flat surface portion 21. That is, the side surface 15a of the connection conductor 15 contacts the flat surface portion 21 disposed at the guide destination of the connection conductor 15 related to the curved surface portion 22. By setting the position of the curved surface portion 22 on the XY plane to a position interfering with the connection conductor 15, the force pressing the connection conductor 15 against the plane portion 21 is generated and the conduction area is enlarged, so that the resistance at the time of electrical connection can be reduced. Further, since the conductor pressing portion 23 adjacent to the right of the connection conductor 15 protrudes forward from the flat surface portion 21, the connection conductor 15 is prevented from falling off in the right direction.
In the above example, the conductor contact portion 10b is provided at the 3 rd position 33 of the conductive metal member 10, but the conductor contact portion 10b may be provided at the 5 th position 35 instead of the 3 rd position 33. That is, the conductor contact portion 10b may be provided at a position facing the upper surface or the lower surface of the housing 100 of the contact switch 1.
Fig. 14 is a diagram showing a modification of the conductive metal material of the contact switch according to embodiment 1. The right end portion of the 3 rd portion 33 is provided with a front guide portion 10g and a rear guide portion 10h. The lower surface of the front guide portion 10g is curved to continuously change from the lower direction to the rear direction. The lower surface of the rear guide portion 10h is a curved surface that continuously changes from the lower direction to the front direction. That is, the front guide portion 10g and the rear guide portion 10h, which are a pair of guide portions, are curved surfaces that continuously change in direction toward the other of the pair of guide portions, respectively, with respect to the surface facing the lower surface of the housing 100. The connection conductor 15 of the thermal relay 12 in contact with the front guide portion 10g or the rear guide portion 10h is introduced into a gap between the front guide portion 10g and the rear guide portion 10h, and is fixed by being fitted into the gap. The connection conductor 15 is sandwiched between the front guide portion 10g and the rear guide portion 10h, and thereby the reliability of the electrical connection between the conductive metal 10 and the electric wire is improved. Further, since the connection conductor 15 is sandwiched between the front guide portion 10g and the rear guide portion 10h, the wire is less likely to fall off in the rightward direction.
The pair of guide portions may be arranged in a direction other than the front-rear direction in the XY plane, as long as the pair of guide portions are provided so as to face each other and can be fixed with the connecting conductor interposed therebetween.
Since the contact switch 1 according to embodiment 1 has the conductor insertion port 9a provided in the housing 9 constituting a part of the upper surface or the lower surface of the housing 100, the wire insertion portions 4, 5, and 6 are spring-type having the spring terminals 8, but the expansion device for the screw terminals can be directly coupled. Further, since the 3 rd portion 33, which is a portion facing the upper surface or the lower surface of the housing 100 of the contact switch 1, of the conductive metal material 10 is provided with the conductor contact portion 10b, the expansion device for the screw terminal can be coupled from the up-down direction different from the opening direction of the wire insertion portions 4, 5, 6. Further, if the rod-shaped connection conductor of the expansion device can be inserted into the housing 100 from the up-down direction, the case 9 may be provided at a portion other than the upper surface or the lower surface of the housing 100.
Embodiment 2
Fig. 15 is an oblique view of a connection auxiliary pin according to embodiment 2 of the present invention. Fig. 16 is a plan view of a connection auxiliary pin according to embodiment 2. The connection auxiliary pin 16 is composed of a rod-shaped pin portion 17 and a pin housing 18, and the pin portion 17 presses the connection conductor 15 against the conductive metal 10, and the pin housing 18 holds the pin portion 17 and assists the connection with the contact switch 1. The pin housing 18 determines the insertion position of the pin 17 with respect to the wire insertion portion 5. Fig. 17 is an oblique view of an electromagnetic switch in which the contact switch and the thermal relay according to embodiment 1 are coupled using a connection auxiliary pin according to embodiment 2. Fig. 18 is a front view of an electromagnetic switch in which the contact switch and the thermal relay according to embodiment 1 are coupled using a connection auxiliary pin according to embodiment 2. The pin portion 17 has an inclined surface 171, and the inclined surface 171 has an inclination with respect to the insertion direction into the wire insertion portion 5.
Fig. 19 is a cross-sectional view of the electromagnetic switch in which the contact switch and the thermal relay according to embodiment 1 are coupled using the connection auxiliary pin according to embodiment 2. Fig. 19 shows a section along line XIX-XIX in fig. 18. Fig. 20 is a cross-sectional view of the electromagnetic switch in which the contact switch and the thermal relay according to embodiment 1 are coupled using the connection auxiliary pin according to embodiment 2. Fig. 20 shows a section along the line XX-XX in fig. 18. The connection auxiliary pin 16 is inserted from the opening 7a of the wire insertion portion 5 of the phase to which the connection conductor 15 is coupled. The position of the insertion site is determined by the pin housing 18, and the inclined surface 171 of the pin 17 contacts the flat surface portion 21 and the conductor pressing portion 23 of the conductive metal 10 of the connection conductor 15 and contacts the opposite side. If the connection conductor 15 is completely inserted, the pin 17 and the connection conductor 15 interfere with each other according to the positional relationship, and the connection conductor 15 is pressed against each other in the direction of the flat portion 21 and the direction of the conductor pressing portion 23.
The pin 17 is in contact with the connection conductor 15 and is electrically connected to the frame 10a of the conductive metal member 10, and thus has a function of securing a new through circuit.
In order to attach the connection auxiliary pin 16 to the wire insertion portion 5, the pin portion 17 is held by the spring terminal 8, and a fixing force is always ensured.
In addition, the connection auxiliary pin 16 needs to ensure the pressing amount of the connection conductor 15 to the conductor contact portion 10b in order to ensure the contact pressure between the connection conductor 15 and the conductive metal member 10. Therefore, although the connection auxiliary pin 16 needs to be pushed into the wire insertion portion 5, it is difficult to manage the completion of the push-in a numeric manner all the time, and there is a possibility that the push-in becomes insufficient at the time of connection.
Fig. 21 is a cross-sectional view of the connection auxiliary pin according to embodiment 2 when not in use. Fig. 21 shows a section along line XXI-XXI in fig. 16. Fig. 22 is a cross-sectional view of the connection auxiliary pin according to embodiment 2 after being pushed into the electromagnetic shutter. When the connection auxiliary pin 16 is not in use, the case coupling portion 17a of the pin portion 17 is engaged with the 1 st engaging portion 18a of the pin case 18. The diameter of the 1 st engaging portion 18a of the pin housing 18 is the same as the diameter of the cylindrical portion 7b of the insertion port member 7 of the contact switch 1. The 1 st engaging portion 18a is elastically deformed by being pressed and expanded by the case coupling portion 17 a. When the connection auxiliary pin 16 is pushed into the wire insertion portion 5, a reaction force of pushing is generated in the pin portion 17. When the insertion pressure reaches the press-in completion, the housing coupling portion 17a of the pin portion 17 passes over the convex portion 18c and engages with the 2 nd engaging portion 18b due to the reaction force. That is, if the reaction force received by the pin 17 exceeds a certain value when the pin is inserted into the wire insertion portion 5, the pin 17 passes over the convex portion 18c and engages with the 2 nd engaging portion 18b. When the case coupling portion 17a of the pin portion 17 passes over the protruding portion 18c, vibration and engagement sound occur, and therefore the insertion of the connection auxiliary pin 16 can be recognized that press-fitting is completed based on the vibration and engagement sound. If the case coupling portion 17a moves to the 2 nd engaging portion 18b beyond the protruding portion 18c, the 1 st engaging portion 18a returns to its original shape, and the case coupling portion 17a is fixed to the 2 nd engaging portion 18b.
The connection auxiliary pin 16 according to embodiment 2 has the inclined surface 171, and the inclined surface 171 has an inclination with respect to the insertion direction into the wire insertion portion 5, and the inclined surface 171 biases the connection conductor 15 toward the conductive metal material 10 when the wire insertion portion 5 is inserted, so that the contact pressure between the connection conductor 15 and the conductive metal material 10 can be increased, and the reliability of the electrical connection between the connection conductor 15 and the conductive metal material 10 can be improved.
The configuration shown in the above embodiment is an example showing the content of the present invention, and may be combined with other known techniques, or a part of the configuration may be omitted or changed without departing from the scope of the present invention.
Description of the reference numerals
The contact switch is composed of a contact switch, 2, 13 cases, 3 rear cases, 4, 5, 6 wire insertion portions, 7 insertion port members, 7a opening portions, 7b cylindrical portions, 7c tool insertion ports, 7d electricity test holes, 8 spring type terminals, 9 cases, 9a conductor insertion ports, 9b thin wall portions, 10 conductive metal pieces, 10a frame portions, 10b conductor contact portions, 10g front guide portions, 10h rear guide portions, 11 springs, 12 heat relay, 14 covers, 15 connection conductors, 15a side surfaces, 16 connection auxiliary pins, 17 pin portions, 17a case coupling portions, 18 pin cases, 18a 1 st engagement portions, 18b 2 nd engagement portions, 18c protruding portions, 21 planar portions, 22 nd portions, 23 conductor pressing portions, 31 st portions, 32 nd portions, 33 rd portions, 34 th portions, 35 th portions, 36 th portions, 41 movable contacts, 52 fixed cores, 54 movable cores, 57 crossbars, 59 connection plates, 60 open portions, 61 nd portions, 62 nd portions, 66 movable cores, 66, and 110, and inclined surfaces.
Claims (7)
1. A contact shutter, comprising:
a housing having a 1 st wire insertion portion into which a wire connected to a power source that supplies power to a load device is inserted, and a 2 nd wire insertion portion into which a wire connected to the load device is inserted, the 1 st wire insertion portion and the 2 nd wire insertion portion each opening in a front direction;
a conductive metal member provided in the 1 st wire insertion portion and the 2 nd wire insertion portion, respectively; and
an opening/closing section for switching whether to electrically connect or insulate the conductive metal member of the 1 st wire insertion section and the conductive metal member of the 2 nd wire insertion section,
the frame body has a conductor insertion opening capable of inserting a rod-shaped connection conductor from the 1 st wire insertion portion and the 2 nd wire insertion portion in the 1 st direction,
the conductive metal member of the 1 st wire insertion portion and the conductive metal member of the 2 nd wire insertion portion have conductor contact portions having curved portions for guiding the connection conductors inserted into the housing through the conductor insertion openings at positions facing one of the two end surfaces of the housing in the 1 st direction,
the connection conductor and the conductor contact portion are in contact with each other at a guide destination of the connection conductor related to the curved portion.
2. A contact shutter according to claim 1, characterized in that,
the frame body has a housing covering the conductive metal material of the 1 st wire insertion part and the conductive metal material of the 2 nd wire insertion part on both end surfaces in the 1 st direction,
the conductor insertion port is formed in the housing.
3. A contact shutter according to claim 2, characterized in that,
the housing has a thin portion that closes the conductor insertion opening.
4. A contact shutter according to any one of claims 1 to 3, characterized in that,
the curved surface portion guides the connection conductor in a direction perpendicular to the 1 st direction,
the conductor contact portion has a planar portion which is disposed at a guide destination of the connection conductor related to the curved portion and is in contact with a side surface of the connection conductor.
5. A contact shutter according to any one of claims 1 to 3, characterized in that,
the conductor contact has two of the curved portions,
the two curved surface portions constitute a pair of guide portions facing each other with a space therebetween in a plane perpendicular to the 1 st direction,
each of the pair of guide portions is continuously changed in the direction facing one of the pair of guide portions toward the other of the pair of guide portions, opposite to one of the end surfaces in the 1 st direction of the housing.
6. A connection auxiliary pin inserted into the 1 st electric wire insertion portion or the 2 nd electric wire insertion portion of the contact shutter according to any one of claims 1 to 5,
the connection auxiliary pin is characterized in that,
has an inclined surface having an inclination with respect to the insertion direction into the 1 st wire insertion portion or the 2 nd wire insertion portion,
when the connection conductor is inserted into the 1 st wire insertion portion or the 2 nd wire insertion portion, the inclined surface is biased toward the conductive metal member of the 1 st wire insertion portion or the conductive metal member of the 2 nd wire insertion portion.
7. The connection assistance-pin as claimed in claim 6, wherein,
comprising a rod-shaped pin part and a pin housing for holding the pin part,
the pin housing has: a 1 st engagement portion that engages the pin portion; a 2 nd engaging portion provided at a rear side of the 1 st engaging portion with respect to an insertion direction of the 1 st wire inserting portion or the 2 nd wire inserting portion; and a protruding portion provided between the 1 st engagement portion and the 2 nd engagement portion,
when the pin is inserted into the 1 st wire insertion portion or the 2 nd wire insertion portion, if the reaction force received by the pin exceeds a predetermined value, the pin is engaged with the 2 nd engagement portion beyond the protruding portion.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/041163 WO2021075056A1 (en) | 2019-10-18 | 2019-10-18 | Contact switch and connection auxiliary pin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114600217A CN114600217A (en) | 2022-06-07 |
| CN114600217B true CN114600217B (en) | 2023-10-27 |
Family
ID=71738595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980101366.9A Active CN114600217B (en) | 2019-10-18 | 2019-10-18 | Contact switch and connection auxiliary pin |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6732155B1 (en) |
| KR (1) | KR20220041941A (en) |
| CN (1) | CN114600217B (en) |
| WO (1) | WO2021075056A1 (en) |
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|---|---|---|---|---|
| JPS56138883A (en) * | 1980-03-31 | 1981-10-29 | Fujitsu Ltd | Multiconnector |
| JP2004071402A (en) * | 2002-08-07 | 2004-03-04 | Molex Inc | Outlet device |
| CN102859631A (en) * | 2009-08-20 | 2013-01-02 | 富士电机机器制御株式会社 | Electromagnetic contactor |
| CN104885183A (en) * | 2013-12-27 | 2015-09-02 | 欧姆龙株式会社 | Assembly construction of contactor terminals and electromagnetic relay equipped therewith |
| DE102014115009B3 (en) * | 2014-10-16 | 2016-02-25 | Harting Electric Gmbh & Co. Kg | Connectors |
| CN107112167A (en) * | 2014-12-24 | 2017-08-29 | 三菱电机株式会社 | Electromagnetism shutter |
| CN107408766A (en) * | 2015-03-23 | 2017-11-28 | 伊顿电气Ip两合公司 | Electric switch device with electric clipper joint |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0720848Y2 (en) * | 1992-09-25 | 1995-05-15 | 日東工業株式会社 | Terminal device |
| JP6593197B2 (en) * | 2016-01-27 | 2019-10-23 | 富士電機機器制御株式会社 | Connection module, combination starter using the same, and electromagnetic contactor replacement method for combination starter |
| JP6922390B2 (en) | 2017-05-01 | 2021-08-18 | 富士電機機器制御株式会社 | Connecting unit of electric equipment and magnetic contactor equipped with it, thermal overload relay, electromagnetic switch |
| JP6566054B2 (en) * | 2018-01-29 | 2019-08-28 | 富士電機機器制御株式会社 | Electrical equipment connection structure |
-
2019
- 2019-10-18 JP JP2020511404A patent/JP6732155B1/en active Active
- 2019-10-18 KR KR1020227008977A patent/KR20220041941A/en active Search and Examination
- 2019-10-18 WO PCT/JP2019/041163 patent/WO2021075056A1/en active Application Filing
- 2019-10-18 CN CN201980101366.9A patent/CN114600217B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56138883A (en) * | 1980-03-31 | 1981-10-29 | Fujitsu Ltd | Multiconnector |
| JP2004071402A (en) * | 2002-08-07 | 2004-03-04 | Molex Inc | Outlet device |
| CN102859631A (en) * | 2009-08-20 | 2013-01-02 | 富士电机机器制御株式会社 | Electromagnetic contactor |
| CN104885183A (en) * | 2013-12-27 | 2015-09-02 | 欧姆龙株式会社 | Assembly construction of contactor terminals and electromagnetic relay equipped therewith |
| DE102014115009B3 (en) * | 2014-10-16 | 2016-02-25 | Harting Electric Gmbh & Co. Kg | Connectors |
| CN107112167A (en) * | 2014-12-24 | 2017-08-29 | 三菱电机株式会社 | Electromagnetism shutter |
| CN107408766A (en) * | 2015-03-23 | 2017-11-28 | 伊顿电气Ip两合公司 | Electric switch device with electric clipper joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6732155B1 (en) | 2020-07-29 |
| JPWO2021075056A1 (en) | 2021-11-04 |
| KR20220041941A (en) | 2022-04-01 |
| CN114600217A (en) | 2022-06-07 |
| WO2021075056A1 (en) | 2021-04-22 |
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