WO2021240822A1 - スプリング式端子部品、電磁接触器及び過負荷継電器 - Google Patents
スプリング式端子部品、電磁接触器及び過負荷継電器 Download PDFInfo
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- WO2021240822A1 WO2021240822A1 PCT/JP2020/021486 JP2020021486W WO2021240822A1 WO 2021240822 A1 WO2021240822 A1 WO 2021240822A1 JP 2020021486 W JP2020021486 W JP 2020021486W WO 2021240822 A1 WO2021240822 A1 WO 2021240822A1
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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
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
- H01R4/34—Conductive members located under head of screw
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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
Definitions
- the present disclosure relates to a spring-type terminal component provided with a spring-type terminal that secures continuity by sandwiching a conductor portion of an electric wire with the pressure of a spring, and an electromagnetic contactor and an overload relay to which the spring-type terminal is attached.
- An electromagnetic contactor, an overload relay, and an electromagnetic switch that combines an electromagnetic contactor and an overload relay are installed in the current path between the power supply and the load and are used to open and close the current path.
- screw-type terminals that sandwich the ends of stripped wires with screws were used as terminals for fixing wires, but the ends of stripped wires.
- Spring-type terminals that sandwich the portion with the pressure of a spring are also being used.
- the spring type terminal is a terminal that secures the continuity between the conductor part of the electric wire and the conductive metal fitting by sandwiching the conductor part of the electric wire between the fixed conductive metal fitting and the spring.
- the spring type terminal is always contacted by the action of the spring. For this reason, unlike the screw type terminal, the spring type terminal does not require skill at the time of wiring, and the conduction state is stable regardless of who inserts the conductor part of the electric wire between the conductive metal fitting and the spring. ing. Further, since the spring type terminal does not loosen even after a lapse of time after wiring, maintenance work can be reduced as compared with the screw type terminal.
- Spring-loaded terminals have the above advantages over threaded terminals, but if the law or safety standards stipulate the use of threaded terminal electromagnetic contactors, overload relays or electromagnetic switches. , Even if it is disadvantageous in terms of wiring workability and frequency of maintenance, screw type terminals must be used. Therefore, magnetic contactors, overload relays and electromagnetic switches need to be manufactured with both screw-type terminals and spring-type terminals. However, since the conventional manufacturing equipment for magnetic contactors, overload relays, and electromagnetic switches is specialized for screw-type terminals, the conventional manufacturing equipment can be used as is for spring-type terminal electromagnetic contactors. It is difficult to manufacture load relays and electromagnetic switches.
- Patent Document 1 discloses a structure in which torque is continuously applied in the screw tightening rotation direction to a screw that has been tightened and stopped at an arbitrary position. If a dedicated component for fixing the screw is provided as in the technique disclosed in Patent Document 1, it is possible to prevent the screw for fixing the spring type terminal component from loosening.
- Patent Document 1 when the technique disclosed in Patent Document 1 is applied to a spring-type terminal component, it is necessary to add a dedicated element in order to prevent the screw-type terminal of the object to which the spring-type terminal component is attached from loosening. , The number of parts will increase.
- the present disclosure has been made in view of the above, and an object thereof is to obtain a spring type terminal component capable of preventing loosening of a screw type terminal of an object to be attached without increasing the number of parts.
- the spring type terminal component includes a conductive metal fitting screwed to a screw type terminal of an electromagnetic contactor or an overload relay, and a conductive metal fitting.
- a spring-type terminal having a spring that engages with an elastic force and a holding member for holding the spring-type terminal are provided.
- the holding member includes an interference portion that interferes with the hole or groove of the screw head of the screw to suppress the rotation of the screw.
- the spring-type terminal parts according to the present disclosure have the effect of preventing loosening of the screws of the screw-type terminals of the object to be attached without increasing the number of parts.
- FIG. 1 Front view of the electromagnetic switch according to the first embodiment Left side view of the electromagnetic switch according to the first embodiment Perspective view of the electromagnetic switch according to the first embodiment Exploded view of the spring type terminal component according to the first embodiment Sectional drawing of the spring type terminal component which concerns on Embodiment 1.
- Sectional drawing of the spring type terminal component which concerns on Embodiment 4. Schematic diagram of a cross section of the spring type terminal component according to the fifth embodiment.
- FIG. 1 is a front view of the electromagnetic switch according to the first embodiment.
- FIG. 2 is a left side view of the electromagnetic switch according to the first embodiment.
- FIG. 3 is a perspective view of the electromagnetic switch according to the first embodiment.
- the electromagnetic switch 3 includes an electromagnetic contactor 1, an overload relay 2, and a spring-type terminal component 24.
- the magnetic contactor 1 includes an electric wire insertion port 4 on the power supply side, an electric wire insertion port 5 on the load side, and an electric wire insertion port 6 for driving the electromagnetic contactor 1.
- the wire insertion port 4 on the power supply side and the wire insertion port 5 on the load side each have five terminals, and three of the five terminals serve as main circuits for opening and closing the current to the load device, and two. Is an auxiliary circuit for wiring the signal line. Depending on the product, four of the five terminals may be the main circuit for switching the current to the load device, and one may be the auxiliary circuit for wiring the signal line.
- the overload relay 2 is a device for monitoring the load status of a load device (not shown).
- An example of a load device is an electric induction machine.
- the overload relay 2 is a device that monitors the load status of the load device by a current and emits a signal within a specified time when the set current value is exceeded.
- the electromagnetic contactor 1 or other equipment that receives the signal emitted from the overload relay 2 cuts off the current to the load equipment and protects the load equipment from burning or the like.
- the spring type terminal component 24 is provided with three electric wire insertion ports 8 for electric wires connected to the load device, and is provided with four electric wire insertion ports 7 for signal lines. Two of the electric wire insertion holes 7 for the four signal lines are for the a contact, and the other two are for the b contact.
- the electric wire insertion port 4, the electric wire insertion port 5, and the electric wire insertion port 6 have the same shape when viewed from the front.
- the shape of the wire insertion port 7 and the wire insertion port 8 when viewed from the front does not have the flat portion of the side surface existing in the wire insertion port 4, the wire insertion port 5, and the wire insertion port 6, and pushes two circles from the left and right. It has a shape that looks like a hit.
- FIG. 4 is an exploded view of the spring type terminal component according to the first embodiment.
- FIG. 5 is a cross-sectional view of the spring type terminal component according to the first embodiment.
- FIG. 5 shows a cross section along the VV line in FIG.
- the overload relay 2 to which the spring type terminal component 24 is attached has a screw type terminal 17 to which an electric wire connected to a load device is connected and a screw type terminal 16 to which an electric wire of a signal line is connected.
- the screw type terminal 16 includes a screw 14 for fixing an electric wire.
- the screw type terminal 17 includes a screw 15 for fixing an electric wire.
- the spring type terminal component 24 has wire receiving assembly parts 25 and 26 and an insertion port member 12 which are holding members for holding the spring type terminals 11 and 21.
- the wire receiving assembly component 25 has a wire receiving member 20 and a spring type terminal 21.
- the spring type terminal 21 has a conductive metal fitting 9a and a spring 10a engaged with the conductive metal fitting 9a by an elastic force.
- the conductive metal fitting 9a is held by the electric wire receiving member 20.
- the spring type terminal 21 sandwiches the conductor portion of the electric wire between the conductive metal fitting 9a fixed to receive the electric wire and the movable spring 10a, and secures the continuity between the conductor portion of the electric wire and the conductive metal fitting 9a.
- the spring type terminal 21 has a structure in which the stripped electric wire is directly sandwiched between the springs 10a and can be wired.
- the spring type terminal 21 is installed at the back of the electric wire insertion port 8.
- the spring-type terminal 21 installed at the back of the electric wire insertion port 8 is always in contact with pressure.
- the wire receiving assembly part 26 has a wire receiving member 19 and a spring type terminal 11.
- the spring type terminal 11 has a conductive metal fitting 9b and a spring 10b engaged with the conductive metal fitting 9b by an elastic force.
- the conductive metal fitting 9b is held by the electric wire receiving member 19.
- the spring type terminal 11 sandwiches the conductor portion of the electric wire between the conductive metal fitting 9b fixed to receive the electric wire and the movable spring 10b, and secures the continuity between the conductor portion of the electric wire and the conductive metal fitting 9b.
- the spring type terminal 11 has a structure in which the stripped electric wire is directly sandwiched between the springs 10b and can be wired.
- the spring type terminal 11 is installed at the back of the electric wire insertion port 7.
- the spring-type terminal 11 installed at the back of the electric wire insertion port 7 is always in contact with pressure.
- An insertion port member 12 having a tubular portion 12a is installed in the electric wire insertion ports 7 and 8, and when the end portion of the electric wire is inserted into the tubular portion 12a, it is between the conductive metal fitting 9a and the spring 10a, or. The end of the electric wire is guided between the conductive metal fitting 9b and the spring 10b.
- the wire receiving member 19 includes a press-fitting portion 18 into which the screw head of the screw 15 is press-fitted, and an interfering portion 22 that interferes with the hole or groove of the screw head of the screw 15.
- the press-fitting portion 18 applies pressure to the screw head of the press-fitted screw 15 from the outer peripheral side.
- FIG. 6 is a perspective view showing a wire receiving assembly part of a spring type terminal part and a screw of a screw type terminal of an overload relay according to the first embodiment. In the first embodiment, a plus / minus hole 15a is formed in the screw head of the screw 15.
- the press-fitting portion 18 has a shape in which a cylindrical surface having an inner diameter smaller than the diameter of the screw head of the screw 15 is divided at intervals in the circumferential direction. That is, the press-fitting portion 18 has a shape in contact with a part of the outer circumference of the screw 15.
- the press-fitting portion 18 has a shape having a central axis.
- the press-fitting portion 18 Since the press-fitting portion 18 has a shape in contact with a part of the outer periphery of the screw head of the screw 15, the screw 15 is easily press-fitted into the press-fitting portion 18.
- the press-fitting portion 18 may have a cylindrical shape having an inner diameter smaller than the diameter of the screw head of the screw 15. That is, the press-fitting portion 18 may be in contact with the entire circumference of the outer circumference of the screw head of the screw 15.
- FIG. 5 shows a structure in which the axial direction of the screw 15 and the axial direction of the press-fitting portion 18 form an angle
- the angle between the axial direction of the screw 15 and the axial direction of the press-fitting portion 18 is a specific angle. Not limited.
- the axial direction of the screw 15 and the axial direction of the press-fitting portion 18 may be the same.
- the interference unit 22 interferes with the plus / minus hole 15a of the screw 15 when the wire receiving assembly part 26 is assembled to the overload relay 2.
- 7 and 8 are diagrams showing an interference state between the interference portion of the spring type terminal component and the plus / minus holes according to the first embodiment. The tightening angle of the screw 15 is different between FIGS. 7 and 8. In FIGS. 7 and 8, the portion of the interference portion 22 that is inserted into the plus / minus hole 15a of the screw head of the screw 15 is shaded. When the interference portion 22 is pressed against the screw head of the screw 15, the resin interference portion 22 is deformed following the plus / minus hole 15a and enters the plus / minus hole 15a. When the interference portion 22 enters the plus / minus hole 15a, the rotation of the screw 15 is hindered and loosening is prevented.
- the interference portion 22 has a plate-like protrusion shape, and the thickness of the interference portion 22 is thicker than the width of the plus / minus hole 15a. Therefore, as shown in FIGS. 7 and 8, the interference portion 22 interferes with the plus / minus hole 15a regardless of the tightening angle of the screw 15.
- the insertion port member 12 is provided with a tool insertion port 13 for inserting or removing an electric wire.
- the spring type terminal component 24 an operating tool is inserted into the tool insertion port 13 to release or relax the contact pressure by the springs 10a and 10b, and then the electric wire is inserted or removed.
- the insertion port member 12 includes an interference portion 23 that interferes with the hole or groove of the screw head of the screw 14.
- a plus / minus hole 14a is formed in the screw head of the screw 14.
- the interference portion 23 has a plate-like protrusion shape like the interference portion 22. Therefore, the interference between the interference portion 23 and the hole or groove of the screw head of the screw 14 is the same as the interference between the interference portion 22 and the hole or groove of the screw head of the screw 15.
- the procedure for attaching the spring type terminal component 24 to the overload relay 2 will be described.
- the wire receiving assembly component 25 in which the wire receiving member 20 and the four spring type terminals 21 are integrated is assembled to the overload relay 2, and the conductive metal fittings 9a are fastened to the screw type terminals 17 with screws 15 to fix them.
- the wire receiving assembly part 26 in which the wire receiving member 19 and the three spring type terminals 11 are integrated is assembled so as to be fitted to the wire receiving assembly part 25, and the conductive metal fitting 9b is screwed to the screw type terminal with a screw 14. Tighten to 16 to fix.
- the screw 15 is press-fitted into the press-fitting portion 18 of the wire receiving member 19.
- the press-fitting portion 18 applies pressure in the axial direction to the press-fitted screw 15.
- the screw 15 is prevented from rotating and is prevented from loosening.
- the interference portion 22 interferes with the plus / minus hole 15a of the screw 15. As a result, the screw 15 is prevented from rotating and loosening.
- the interference width of the press-fitting portion 18 and the interference dimension of the interfering portion 22 can be appropriately changed according to the hardness of the resin used as the material of the press-fitting portion 18 and the interfering portion 22.
- the attachment of the spring type terminal part 24 to the overload relay 2 having the screw type terminals 16 and 17 is completed.
- the springs 10a and 10b that are part of the spring type terminals 21 and 11 are held by the insertion port member 12, and the springs 10a and 10b are the conductive metal fittings 9a and It is prevented from falling off from 9b.
- the interference portion 23 interferes with the plus / minus holes 14a when the insertion port member 12, which is a holding member for holding the spring type terminals 11 and 21, is assembled. As a result, the screw 14 is prevented from rotating and loosening.
- the spring-type terminal component 24 has a number of components in order to prevent the screws 14 and 15 from loosening by the wire receiving member 19 and the insertion port member 12, which are holding members for holding the spring-type terminals 21 and 11. It is possible to prevent the screws 14 and 15 of the screw type terminals 16 and 17 from loosening while suppressing the increase. Further, since it is not necessary to add a step of applying an adhesive to the screw thread in order to prevent the screw from loosening, the work of attaching the spring type terminal component 24 to the overload relay 2 can be easily performed.
- the spring-type terminal component 24 according to the second embodiment is the same as the spring-type terminal component 24 according to the first embodiment, except that the wire receiving members 19 and 20 have the interference portion 27 instead of the interference portions 22 and 23.
- FIG. 9 is a perspective view showing the shape of the interference portion of the wire receiving member of the spring type terminal component according to the second embodiment.
- FIG. 10 is a plan view showing the shape of the interference portion of the wire receiving member of the spring type terminal component according to the second embodiment.
- the interference portion 27 of the spring-type terminal component 24 according to the second embodiment is cylindrical. The diameter of the interference portion 27 is smaller than the width of the chamfered portion in the central portion of the plus / minus hole 15a.
- the interference portion 27 fits into the central portion of the plus / minus hole 15a, interferes with the recess 15b inside the plus / minus hole 15a, and the tip portion enters the recess 15b.
- the tip of the interference portion 27 enters the recess 15b, the screw 15 is prevented from rotating and loosening.
- the effect of the interference portion 27 of the electric wire receiving member 19 to prevent the screw 15 from loosening has been described, but the same applies to the effect of the interference portion 27 of the insertion port member 12 to prevent the screw 14 from loosening.
- the interference portion 27 since the interference portion 27 has a columnar shape, the force by which the interference portion 27 suppresses the rotation of the screws 14 and 15 is constant regardless of the rotation angle of the screws 14 and 15. Will be. That is, the spring type terminal component 24 according to the second embodiment can stably obtain the effect of suppressing the rotation of the screws 14 and 15.
- the spring-type terminal component 24 according to the third embodiment is the same as the spring-type terminal component 24 according to the first embodiment, except that the wire receiving members 19 and 20 have the interference portion 28 instead of the interference portions 22 and 23.
- FIG. 11 is a perspective view showing the shape of the interference portion of the wire receiving member of the spring type terminal component according to the third embodiment.
- FIG. 12 is a plan view showing the shape of the interference portion of the wire receiving member of the spring type terminal component according to the third embodiment.
- the interference portion 28 of the spring-type terminal component 24 according to the third embodiment is cylindrical. The diameter of the interference portion 28 is larger than the width of the chamfered portion in the central portion of the plus / minus hole 15a.
- the interference portion 28 hits the surface of the screw head of the screw 15, and the tip portion interferes with the plus / minus hole 15a and enters the plus / minus hole 15a.
- the tip of the interference portion 28 enters the plus / minus hole 15a, the screw 15 is prevented from rotating and loosening.
- the effect of the interference portion 28 of the electric wire receiving member 19 to prevent the screw 15 from loosening has been described, but the same applies to the effect of the interference portion 28 of the insertion port member 12 to prevent the screw 14 from loosening.
- the interference portion 28 since the interference portion 28 has a columnar shape, the force by which the interference portion 28 suppresses the rotation of the screws 14 and 15 is constant regardless of the rotation angle of the screws 14 and 15. Will be. That is, the spring type terminal component 24 according to the second embodiment can stably obtain the effect of suppressing the rotation of the screws 14 and 15.
- FIG. 13 is a cross-sectional view of the spring type terminal component according to the fourth embodiment.
- the spring-type terminal component 24 according to the fourth embodiment is different from the spring-type terminal component 24 according to the first embodiment in that the electric wire receiving member 19 does not have an interference portion.
- FIG. 13 shows a cross section of the spring type terminal component 24 at a position corresponding to the XIII-XIII line in FIG. Since there is no wire insertion port 8 at the position in FIG. 1 through which the XIII-XIII wire passes, the wire receiving assembly part 25 does not exist in this portion, and only the wire receiving assembly part 26 and the insertion port member 12 exist. doing.
- the mold for making the electric wire receiving member 19 can be simplified.
- FIG. 14 is a schematic cross-sectional view of the spring type terminal component according to the fifth embodiment.
- the spring-type terminal component 30 according to the fifth embodiment has a cover member 32 and a spring-type terminal 31 electrically connected to the contactor 1b of the screw-type terminal of the electromagnetic contactor 1.
- the spring type terminal 31 has a conductive metal fitting 9c and a spring 10c. Of the spring type terminals 31, the conductive metal fitting 9c is fixed to the contactor 1b with the screw 33.
- the cover member 32 includes a press-fitting portion 34 into which the screw 33 is press-fitted, an interfering portion 35 that interferes with the screw 33, and an electric wire insertion port 32a that guides the electric wire to the spring type terminal 31.
- the cover member 32 is fixed to the case 1a of the electromagnetic contactor 1 by a concave-convex fitting (not shown).
- the spring type terminal 31 When the cover member 32 is fixed to the case 1a of the electromagnetic contactor 1, the spring type terminal 31 is held by the cover member 32, and the spring 10c, which is a part of the spring type terminal 31, may fall off from the conductive metal fitting 9c. Be prevented.
- the screw-type terminal of the electromagnetic contactor 1 in order to prevent the screw 33 from loosening by the cover member 32 that holds the spring-type terminal 31, the screw-type terminal of the electromagnetic contactor 1 has a screw-type terminal while suppressing an increase in the number of parts. Loosening of the screw 33 can be prevented.
- the configuration shown in the above embodiment is an example of the content, can be combined with another known technique, and a part of the configuration is omitted or changed without departing from the gist. It is also possible.
Abstract
Description
図1は、実施の形態1に係る電磁開閉器の正面図である。図2は、実施の形態1に係る電磁開閉器の左側面図である。図3は、実施の形態1に係る電磁開閉器の斜視図である。電磁開閉器3は、電磁接触器1と、過負荷継電器2と、スプリング式端子部品24とを備える。電磁接触器1は、電源側の電線挿入口4と、負荷側の電線挿入口5と、電磁接触器1の駆動用の電線挿入口6とを備える。電源側の電線挿入口4及び負荷側の電線挿入口5は、各々五つの端子を備えており、五つの端子のうち三つは負荷機器への電流を開閉するための主回路となり、二つは信号線を配線するための補助回路となる。製品によっては五つの端子のうち四つが負荷機器への電流を開閉するための主回路となり、一つが信号線を配線するための補助回路となる場合もある。
実施の形態2に係るスプリング式端子部品24は、電線受け部材19,20が干渉部22,23の代わりに干渉部27を有することを除いて、実施の形態1に係るスプリング式端子部品24と同様である。図9は、実施の形態2に係るスプリング式端子部品の電線受け部材の干渉部の形状を示す斜視図である。図10は、実施の形態2に係るスプリング式端子部品の電線受け部材の干渉部の形状を示す平面図である。実施の形態2に係るスプリング式端子部品24の干渉部27は、円柱状である。干渉部27の直径は、プラスマイナス穴15aの中央部の面取りされた部分での幅よりも小さくなっている。また、プラスマイナス穴15aの内部には、プラスドライバーの先端部が嵌合する十字形状の凹部15bが形成されている。したがって、干渉部27は、プラスマイナス穴15aの中央部に嵌まり、プラスマイナス穴15aの内部において凹部15bに干渉し、先端部が凹部15bに入り込む。干渉部27の先端部が凹部15bに入り込むことにより、ねじ15は回転が妨げられ、緩みが防止される。ここでは、電線受け部材19の干渉部27がねじ15の緩みを防止する効果について説明したが、挿入口部材12の干渉部27がねじ14の緩みを防止する効果についても同様である。
実施の形態3に係るスプリング式端子部品24は、電線受け部材19,20が干渉部22,23の代わりに干渉部28を有することを除いて、実施の形態1に係るスプリング式端子部品24と同様である。図11は、実施の形態3に係るスプリング式端子部品の電線受け部材の干渉部の形状を示す斜視図である。図12は、実施の形態3に係るスプリング式端子部品の電線受け部材の干渉部の形状を示す平面図である。実施の形態3に係るスプリング式端子部品24の干渉部28は、円柱状である。干渉部28の直径は、プラスマイナス穴15aの中央部の面取りされた部分での幅よりも大きくなっている。したがって、干渉部28は、ねじ15のねじ頭の表面に当たり、先端部がプラスマイナス穴15aに干渉し、プラスマイナス穴15aに入り込む。干渉部28の先端部がプラスマイナス穴15aに入り込むことにより、ねじ15は回転が妨げられ、緩みが防止される。ここでは、電線受け部材19の干渉部28がねじ15の緩みを防止する効果について説明したが、挿入口部材12の干渉部28がねじ14の緩みを防止する効果についても同様である。
図13は、実施の形態4に係るスプリング式端子部品の断面図である。実施の形態4に係るスプリング式端子部品24は、電線受け部材19が干渉部を備えない点で実施の形態1に係るスプリング式端子部品24と相違する。なお、図13は、図1中のXIII-XIII線に相当する位置でのスプリング式端子部品24の断面を示している。図1中のXIII-XIII線が通る位置は、電線挿入口8が無いため、電線受け組立部品25はこの部分には存在しておらず、電線受け組立部品26及び挿入口部材12だけが存在している。
図14は、実施の形態5に係るスプリング式端子部品の断面模式図である。実施の形態5に係るスプリング式端子部品30は、カバー部材32と、電磁接触器1のねじ式端子の接触子1bに電気的に接続されるスプリング式端子31とを有する。スプリング式端子31は、導電性金具9c及びスプリング10cを有する。スプリング式端子31のうち、導電性金具9cがねじ33で接触子1bに固定される。カバー部材32は、ねじ33が圧入される圧入部34と、ねじ33に干渉する干渉部35と、スプリング式端子31に電線を導く電線挿入口32aとを備えている。カバー部材32は、不図示の凹凸嵌合によって電磁接触器1のケース1aに固定される。
Claims (10)
- 電磁接触器又は過負荷継電器のねじ式端子にねじでねじ止めされる導電性金具と、前記導電性金具に弾性力により係合するスプリングとを有するスプリング式端子と、
前記スプリング式端子を保持する保持部材とを備え、
前記保持部材は、前記ねじのねじ頭の穴又は溝に干渉して、前記ねじの回転を抑制する干渉部を備えることを特徴とするスプリング式端子部品。 - 前記保持部材は、前記導電性金具が固定される部材と、前記スプリングが前記導電性金具から脱落することを抑制する部材とを有し、
前記干渉部は、前記スプリングが前記導電性金具から脱落することを抑制する部材に設けられていることを特徴とする請求項1に記載のスプリング式端子部品。 - 前記干渉部は、該干渉部の一部分が前記ねじ頭の穴又は溝に入り込むことを特徴とする請求項1又は2に記載のスプリング式端子部品。
- 前記干渉部は、円柱状であり、端面が前記ねじ頭の穴又は溝に干渉することを特徴とする請求項1から3のいずれか1項に記載のスプリング式端子部品。
- 前記ねじ頭の穴又は溝は、内部に凹部が形成されており、
前記干渉部は、該干渉部の一部分が前記凹部に入り込むことを特徴とする請求項1又は2に記載のスプリング式端子部品。 - 前記保持部材は、前記ねじ頭が圧入される圧入部を有し、
前記圧入部は、前記ねじの軸芯方向の力を、圧入された前記ねじ頭の外周部に加えることを特徴とする請求項1から5のいずれか1項に記載のスプリング式端子部品。 - 電磁接触器又は過負荷継電器のねじ式端子にねじでねじ止めされる導電性金具と、前記導電性金具に弾性力により係合するスプリングとを有するスプリング式端子と、
前記スプリング式端子を保持する保持部材とを備え、
前記保持部材は、前記ねじのねじ頭が圧入される圧入部を有し、
前記圧入部は、前記ねじの軸芯方向の力を、圧入された前記ねじ頭の外周部に加えることを特徴とするスプリング式端子部品。 - 前記圧入部は、前記ねじ頭の外周部に、前記ねじの軸の軸回りの方向に隙間を開けて部分的に接することを特徴とする請求項6又は7に記載のスプリング式端子部品。
- 請求項1から8のいずれか1項に記載のスプリング式端子部品がねじ式端子に取り付けられたことを特徴とする電磁接触器。
- ねじ式端子を備えた過負荷継電器と、
請求項1から8のいずれか1項に記載のスプリング式端子部品がねじ式端子に取り付けられたことを特徴とする過負荷継電器。
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CN202080101223.0A CN115699459A (zh) | 2020-05-29 | 2020-05-29 | 弹簧式端子部件、电磁接触器及过负载继电器 |
KR1020227040795A KR20230002960A (ko) | 2020-05-29 | 2020-05-29 | 스프링식 단자 부품, 전자 접촉기 및 과부하 계전기 |
JP2020555530A JP6824490B1 (ja) | 2020-05-29 | 2020-05-29 | スプリング式端子部品、電磁接触器及び過負荷継電器 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH1079580A (ja) * | 1996-09-05 | 1998-03-24 | Yazaki Corp | 固定ネジの脱落防止構造 |
JPH11336730A (ja) * | 1998-05-28 | 1999-12-07 | Nippon Columbia Co Ltd | ネジ止め装置 |
JP2018156885A (ja) * | 2017-03-21 | 2018-10-04 | 富士電機機器制御株式会社 | 配線用接続器具、及び電気機器 |
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JPH1079580A (ja) * | 1996-09-05 | 1998-03-24 | Yazaki Corp | 固定ネジの脱落防止構造 |
JPH11336730A (ja) * | 1998-05-28 | 1999-12-07 | Nippon Columbia Co Ltd | ネジ止め装置 |
JP2018156885A (ja) * | 2017-03-21 | 2018-10-04 | 富士電機機器制御株式会社 | 配線用接続器具、及び電気機器 |
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