WO2017157341A1 - 一种继电器 - Google Patents
一种继电器 Download PDFInfo
- Publication number
- WO2017157341A1 WO2017157341A1 PCT/CN2017/077155 CN2017077155W WO2017157341A1 WO 2017157341 A1 WO2017157341 A1 WO 2017157341A1 CN 2017077155 W CN2017077155 W CN 2017077155W WO 2017157341 A1 WO2017157341 A1 WO 2017157341A1
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- WO
- WIPO (PCT)
- Prior art keywords
- insulating cover
- drive shaft
- auxiliary terminal
- auxiliary
- conductive
- 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
- H01H50/546—Contact arrangements for contactors having bridging contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
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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
- H01H50/047—Details concerning mounting a relays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/14—Terminal arrangements
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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
- H01H50/44—Magnetic coils or windings
- H01H50/443—Connections to coils
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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
- H01H50/541—Auxiliary contact devices
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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
- H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/0066—Auxiliary contact devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/08—Indicators; Distinguishing marks
Definitions
- the invention relates to the field of relays.
- Existing relays generally include an insulating cover, two static contact bridges, a moving contact bridge, a drive shaft, and a drive structure.
- the two static contact bridges are fixedly mounted on the insulating cover.
- An upper end of the drive shaft extends into the insulating cover, and the movable contact bridge is mounted on an upper end of the drive shaft through an insulating member.
- the driving structure is mounted at a lower end of the driving shaft for driving the driving shaft to drive the movable contact bridge to move or disconnect the two static bridges with the moving contact bridge.
- the point at which the static contact bridge and the movable contact bridge are in contact is called a contact
- the contact on the static contact bridge is called a static contact
- the point on the movable contact bridge is called a movable contact.
- the driving structure is generally composed of a moving iron core, a static iron core, a coil, a yoke, a return spring, and the like.
- the static iron core When the coil is energized, the static iron core generates electromagnetic attraction, and the moving iron core drives the driving shaft to move upward against the elastic force of the return spring under the action of electromagnetic attraction, and the driving shaft drives the movable contact bridge to contact with the static contact bridge fixed on the insulating cover, thereby Turn on the relay.
- the electromagnetic attraction generated by the static iron core disappears, and the return spring drives the drive shaft to move downward, so that the movable contact bridge and the static contact bridge are separated, thereby disconnecting the relay.
- the present invention provides a relay.
- the invention provides a relay comprising an insulating cover, two static contact bridges, a dynamic contact bridge, a drive shaft and a driving structure; the two static contact bridges are fixedly mounted on the insulating cover; the upper end of the driving shaft Extending into the insulating cover, the dynamic contact bridge is mounted on an upper portion of the drive shaft; the driving structure is mounted at a lower end of the drive shaft for driving the drive shaft to drive the movable contact bridge;
- the inner surface of the top of the insulating cover has a relief portion for the top end of the driving shaft; the inner surface of the top surface of the insulating cover is further provided with a conductive layer; the relay further includes an auxiliary conducting structure and an auxiliary detecting structure;
- the conductive structure includes an elastic member and a conductive member; the elastic member elastically supports the conductive member under the conductive member; the conductive member is movable on the drive shaft along the driving shaft; the driving The upward movement of the shaft can drive the dynamic contact bridge to be electrically connected to the static contact
- the relay provided by the invention adds an auxiliary detecting structure to the existing relay, and connects the first auxiliary terminal and the second auxiliary terminal to the external auxiliary detecting line in use.
- the relay When the driving shaft moves upward to make the moving contact bridge and the two static contact bridges simultaneously contact, the relay is turned on. At this time, the conductive member moves up synchronously with the driving shaft and is in conduction with the conductive layer, and the first auxiliary terminal is electrically connected to the second auxiliary terminal through the conductive member and the driving shaft.
- the movable contact bridge is separated from the two static contact bridges at the same time, and the relay is disconnected. At this time, the conductive member moves down synchronously with the drive shaft and is detached from the conductive layer.
- the first auxiliary terminal is disconnected from the second auxiliary terminal. In this way, when the contact is not turned on when the relay is turned on, or the contact is still stuck when the contact is separated, the fault can be quickly detected through the auxiliary detection line, and measures are taken in time to prevent the relay from failing. The resulting safety incident occurred.
- the drive shaft is a conductor; the conductive member is electrically connected to the drive shaft; and the second auxiliary terminal is disposed on the drive structure and is in electrical communication with the drive shaft.
- the elastic member is an electrically conductive auxiliary spring; the auxiliary conducting structure further includes a conductive fixing member under the auxiliary spring; the conductive fixing member is fixed on a driving shaft above the movable contact bridge; Both ends of the auxiliary spring respectively abut against the conductive fixing member and the conductive member.
- the top end of the drive shaft has a limiting portion that restricts upward movement of the conductive member; the elastic member abuts the conductive member against the limiting portion.
- the inner surface of the top surface of the insulating cover is formed with an inner groove as the relief portion; the conductive layer covers at least a portion of the inner surface of the insulating cover and a portion of the inner surface of the inner groove at the same time.
- the inner surface of the top of the insulating cover is formed with a concave hole as the relief portion; the conductive layer covers at least a partial region of the inner surface of the insulating cover at the edge of the inner concave hole.
- the inner surface of the top surface of the insulating cover has a downwardly extending boss, and the boss is partially recessed upward to form the relief portion;
- the relief portion is an inner groove, and the conductive layer covers the protrusion at least simultaneously a portion of the lower surface of the table and a portion of the inner surface of the inner groove; or the relief portion is an inner recess; the conductive layer covering at least a portion of the lower surface of the boss at the edge of the inner recess.
- the inner surface of the insulating cover top is provided with two blocking portions protruding downward; the two blocking portions are oppositely disposed; the conductive layer and the relief portion are located between the two blocking portions.
- the above two blocking portions can increase the creepage distance between the two static contact bridges, and at the same time increase the creepage distance between the conductive layer and the static contact bridge, thereby ensuring the safety of the auxiliary circuit.
- the blocking portion can prevent the splash of copper scraps during arcing and accidentally conduct the static contact bridge and the conductive layer to break the accuracy and safety of the auxiliary line determination.
- the insulating cover top has an auxiliary terminal hole penetrating the insulating cover; the auxiliary terminal hole is located in the conductive layer covering area; and the first auxiliary terminal is encapsulated in the auxiliary terminal hole by a sealant And the bottom end of the first auxiliary terminal is in conduction with the conductive layer.
- the insulating cover top has an auxiliary terminal hole penetrating the insulating cover; the auxiliary terminal hole is located in the conductive layer covering area; the conductive layer at least partially covers an inner wall of the auxiliary terminal hole, The first auxiliary terminal is sealed and soldered into the auxiliary terminal hole and electrically connected to the conductive layer located in the auxiliary terminal hole.
- the outer surface of the insulating cover is provided with a cutout
- the avoidance slot is located at a midpoint of the connection of the two static bridges a vertical line parallel to the outer surface of the insulating cover that is connected to the two static contact bridges; the first auxiliary terminal is located in the cutout.
- the first auxiliary terminal is located at an edge of the insulating cover.
- the above-mentioned avoidance slot can increase the creepage distance between the two static contact bridges and the creepage distance between the static contact bridge and the first auxiliary terminal, thereby ensuring the safety of the auxiliary line.
- the movable contact bridge is mounted on an upper portion of the drive shaft through an insulating member;
- the insulating member includes an upper insulating cover and a lower insulating cover, and the upper insulating cover and the lower insulating cover are sleeved on an upper end of the drive shaft,
- the dynamic contact bridge is insulatively mounted on the drive shaft.
- the driving structure comprises an upper yoke, a static iron core, a moving iron core, a sleeve, a return spring, a buffer spring and a coil;
- the upper yoke is connected to the insulating cover through a connecting platform; Forming a closed space with the insulating cover; the central position of the upper yoke is provided with a shaft hole; a lower end of the drive shaft protrudes from the shaft hole; and the static iron core is sleeved on the upper yoke
- the movable iron core is fixedly mounted on the lower end of the drive shaft;
- the return spring is sleeved on the drive shaft between the static iron core and the movable iron core;
- the buffer spring sleeve a drive shaft in the closed space between the upper yoke and the insulating cover, the upper end of which abuts against the insulating cover, the lower end of which abuts against a washer, and the lower end of the washer is
- the second auxiliary terminal is connected to the upper yoke or the sleeve.
- FIG. 1 is a perspective view of a relay provided by an embodiment of the present invention.
- FIG. 2 is a schematic cross-sectional view of a front view of a relay in an open state according to an embodiment of the present invention
- Figure 3 is an enlarged schematic view of a portion A in Figure 2;
- FIG. 4 is a side cross-sectional view of a side view of a relay in an open state according to an embodiment of the present invention
- Figure 5 is an enlarged schematic view of a portion B in Figure 4.
- FIG. 6 is a schematic cross-sectional view of a front view of a relay in an on state according to an embodiment of the present invention
- Figure 7 is an enlarged schematic view of a portion C in Figure 6;
- FIG. 8 is a cross-sectional side elevational view of a relay in an on state according to an embodiment of the present invention.
- Figure 9 is an enlarged schematic view of the portion D in Figure 8.
- FIG. 10 is a perspective view showing an assembled state of a drive shaft and an auxiliary conduction structure in a relay according to an embodiment of the present invention
- Figure 11 is a cross-sectional view showing the assembled state of the drive shaft and the auxiliary conduction structure in the relay according to an embodiment of the present invention
- FIG. 12 is an exploded view of a drive shaft and an auxiliary conduction structure in a relay according to an embodiment of the present invention
- Figure 13 is a bottom view showing the state of the insulating cover and the first auxiliary terminal assembly in the relay according to an embodiment of the present invention
- FIG. 14 is a diagram showing the state of the insulating cover and the first auxiliary terminal assembly in the relay according to an embodiment of the present invention. Schematic diagram of the center of the view;
- Figure 15 is an enlarged schematic view of E in Figure 14;
- Figure 16 is a bottom plan view showing the state of the insulating cover and the first auxiliary terminal assembly in another embodiment of the present invention.
- 17 is a front cross-sectional view showing the state in which an insulating cover and a first auxiliary terminal assembly are in a center according to another embodiment of the present invention.
- Figure 18 is an enlarged schematic view of the portion F in Figure 17.
- orientation or positional relationship of the terms “upper”, “lower”, “top”, “bottom”, “inside”, “outside”, etc. is based on the The orientation or positional relationship is merely for the purpose of describing the present invention and the simplification of the description, and is not intended to indicate or imply that the device or element referred to has a particular orientation, is constructed and operated in a particular orientation, and thus is not to be construed as limiting the invention.
- FIGS. 1-15 illustrate an embodiment of a relay provided by the present invention.
- the relay comprises an insulating cover 1, two static contact bridges 3, a movable contact bridge 2, a drive shaft 4 and a drive structure.
- the above insulating cover 1 is made of a conventional material and has a conventional structure. Generally, in the art, the above insulating cover 1 is made of a ceramic material.
- the two static contact bridges 3 are fixedly mounted on the insulating cover 1.
- the upper end of the drive shaft 4 extends into the insulating cover 1, and the movable contact bridge 2 is mounted on the upper portion of the drive shaft 4 via an insulating member, and the insulating member and the movable contact bridge 2 are fixed to each other.
- the insulating member, together with the movable contact bridge 2, is movable up and down along the drive shaft 4.
- the structure and material of the drive shaft 4 can be the same as in the prior art.
- the drive shaft 4 can be a conductor or an insulator.
- the driving structure is mounted on the lower end of the driving shaft 4 for driving the driving shaft 4 to move the moving contact bridge 2 to make the moving contact bridge 2 and the two static contact bridges 3 conductive or disconnect.
- the movable contact bridge 2 and the static contact bridge 3 are known to the public, and the movable contact bridge 2 can be a sheet metal with a center hole.
- the contact with the static contact bridge 3 is referred to as a movable contact, and the movable contact bridge 2 is mounted at the upper end of the drive shaft 4.
- the drive shaft 4 is an insulator, the movable contact bridge 2 can be directly disposed on the drive shaft 4.
- the drive shaft 4 is a conductor
- the movable contact bridge 2 is disposed on the drive shaft 4 through an insulating member.
- the drive shaft 4 is a conductor
- the movable contact bridge 2 is provided on the drive shaft 4 via an insulating member.
- the movable contact bridge 2 is mounted on the insulating member. The insulating member insulates the movable contact bridge 2 from the drive shaft 4 while the movable contact bridge 2 and the insulating member fixed to each other are movable along the drive shaft 4.
- the static contact bridge 3 is generally mounted on the insulating cover 1 by brazing. Specifically, as shown in FIG. 13 and FIG. 14, two insulating cover 1 are provided on the top surface for mounting the static contact bridge 3.
- the mounting holes, referred to as the static contact holes 11, are respectively soldered into the two static contact holes 11 by brazing.
- the static contact bridge 3 includes an inner end that projects into the insulating cover 1 and an outer end that projects out of the insulating cover 1.
- the inner end is used for contact with the movable contact bridge 2, and the contact is called a static contact.
- a connecting hole is formed on the outer end for connecting with the wire of the external main circuit, and after the static contact bridge 3 is connected to the external main circuit through the connecting hole, the movable contact bridge 2, the static contact bridge 3 and the external high voltage circuit form a loop.
- the contact and separation of the movable contact and the stationary contact realize the conduction and disconnection of the main circuit in the relay.
- the insulating member is used to insulate the movable contact bridge 2 from the drive shaft 4, which may employ an insulating member known in the art.
- the insulating member includes an upper insulating cover 42 and a lower insulating cover 41, and the upper insulating cover 42 and the lower insulating cover 41 are combined on the drive shaft 4,
- the movable contact bridge 2 is mounted on the drive shaft 4 and insulated from the drive shaft 4, and the movable contact bridge 2 and the insulating member fixed to each other are movable along the drive shaft 4.
- the upper insulating cover 42 and the lower insulating cover 41 isolate the drive shaft 4 from the movable contact bridge 2 and the static contact bridge 3, thereby insulating the high and low voltages, thereby avoiding damage and breakdown of the low-voltage end components, thereby improving the product. Quality and safety.
- the driving structure may adopt various structures known to those skilled in the art.
- the driving structure includes an upper yoke 51, a static iron core 5, and a moving iron core. 6.
- the upper yoke 51 is connected to the insulating cover 1 via a connection table 10.
- a closed space is formed between the upper yoke 51 and the insulating cover 1.
- a shaft hole is provided at a center position of the upper yoke 51. Due to the influence of the material, the upper yoke 51 cannot be directly welded to the insulating cover 1, and therefore, the connection of the upper yoke 51 and the insulating cover 1 is achieved by the connecting table 10.
- the connecting base 10 is made of a metal material, which is previously welded to the lower portion of the insulating cover 1, and the upper yoke 51 is welded to the connecting base 10.
- the lower end of the drive shaft 4 protrudes from the shaft hole at the center of the upper yoke 51, and the static iron core 5 is sleeved on the drive shaft 4 below the upper yoke 51, and the drive shaft 4 can be Move up and down with respect to the static iron core 5.
- the movable iron core 6 is fixedly mounted at a lower end of the drive shaft 4.
- the moving iron core 6 is located below the static iron core 5. That is, the upper end of the drive shaft 4 extends through the shaft hole of the upper yoke 51 into the closed space formed between the upper yoke 51 and the insulating cover 1.
- the movable iron core 6 is fixed to the lower end of the drive shaft 4 by laser welding or screwing.
- the loop formed by the coil is a control loop, and the conduction and disconnection of the control loop controls the electromagnetic attraction of the static iron core 5.
- Both the movable contact and the stationary contact are contacts that constitute the main circuit of the relay.
- the static contact and the movable contact are classified as main The contacts, and the contact of the conductive layer 14 and the conductive member 16 are referred to as auxiliary contacts.
- the return spring 9 is fitted on the drive shaft 4 between the static iron core 5 and the movable iron core 6, and the two ends of the return spring 9 abut against the static iron core 5 and the movable iron core 6, respectively.
- the core 6 and the static iron core 5 exert a tensile force separated from each other.
- the return spring 9 is disposed between the static iron core 5 and the movable iron core 6. When the coil is energized, the movable iron core 6 compresses the return spring 9 when the electromagnetic attraction force of the static iron core 5 moves upward, accumulating the elastic force, and when the coil is broken When it is electrically, the return spring 9 is reset by the elastic force, and the moving iron core 6 is driven to move downward.
- the buffer spring 8 is sleeved on the drive shaft 4 in the closed space between the upper yoke 51 and the insulating cover 1, and the upper end thereof abuts against the lower insulating cover 41, and the lower end thereof abuts against a washer 81.
- the lower end of the washer 81 is limited by a snap spring 82.
- the washer 81 can reduce the force of the clip spring 82 and prevent it from coming off.
- the sleeve 7 is fitted outside the static iron core 5 and the movable iron core 6, and its upper end opening is welded to the upper yoke 51.
- the coil (not shown) is mounted outside the sleeve 7 below the upper yoke 51.
- the upper yoke 51, the static iron core 5, the movable iron core 6, the sleeve 7, and the drive shaft 4 are made of a metal material, the above components are all electrically connected, and are referred to as a core metal member for convenience of description.
- the top inner surface of the insulating cover 1 has a top end for the drive shaft 4
- the evasion department The structure of the relief portion may be a conventional various structure, and only needs to be sufficient for the top end of the drive shaft 4 to extend and disengage.
- the relief portion may be directly recessed from the inner surface of the top of the insulating cover 1 (ie, the inner surface of the top surface of the insulating cover toward the outer surface of the top surface of the insulating cover), or the bottom inner surface of the insulating cover 1 may have a downwardly extending boss.
- the portion of the lower surface of the boss is recessed inwardly to form the relief portion.
- a portion of the lower surface of the boss is recessed inwardly to form the relief portion, and the relief portion may be an inner recess 15 (as shown in FIGS. 13-15) or a recessed hole 15' (FIG. 16). - Figure 18).
- the inner surface of the top of the insulating cover 1 is also provided with a conductive layer 14.
- the purpose of the conductive layer 14 is to electrically contact the conductive member 16 disposed on the drive shaft 4 as the drive shaft 4 moves upward. It can be understood that the surface of the opening of the relief portion is a portion for making electrical contact with the conductive member 16. Therefore, the covering area of the conductive layer 14 should at least cover the portion of the insulating cover 1 for corresponding contact with the conductive member 16.
- the conductive layer 14 covers at least a portion of the lower surface of the boss which is located at the edge of the recessed hole 15'.
- the conductive layer 14 covers at least the portion of the lower surface of the boss and a portion of the inner surface of the inner recess 15 at the same time.
- the conductive layer 14 may be a conventional metal layer, that is, a metallized corresponding region on the ceramic. Processes and methods for forming a metal layer on a ceramic surface are conventional and will not be described in detail in the present invention.
- the above relay includes an auxiliary conduction structure and an auxiliary detection structure.
- the auxiliary detecting structure includes a first auxiliary terminal L1 and a second auxiliary terminal L2.
- the first auxiliary terminal L1 is disposed on the top of the insulating cover 1 and electrically connected to the conductive layer 14.
- an auxiliary terminal hole penetrating the top of the insulating cover 1 may be provided on the top of the insulating cover 1.
- the auxiliary terminal hole can be disposed at any position on the insulating cover 1, only the first auxiliary terminal L1 can be electrically connected to the conductive layer 14 through the auxiliary terminal hole. Just connect.
- the auxiliary terminal holes are located in the coverage area of the conductive layer 14.
- the auxiliary terminal hole can be disposed at a central position between the two static contact bridges 3.
- the auxiliary terminal hole is located at two static positions.
- the position behind the center of the contact bridge 3, specifically, the auxiliary terminal hole is located at the edge of the insulating cover 1.
- the connection of the auxiliary terminal hole and the two static contact bridges 3 forms an isosceles triangle (as shown in FIG. 13 or FIG. 16). Shown).
- the auxiliary terminal opening may be located within the inner recess 15 or the inner recess 15' or may be located outside the inner recess 15 or the inner recess 15'.
- the conductive layer 14 only needs to cover the position of the auxiliary terminal hole.
- the conductive layer 14 covers at least the inner groove 15 or the bottom surface of the inner recess 15' where the auxiliary terminal hole is located.
- the first auxiliary terminal L1 is provided on the insulating cover 1 through the auxiliary terminal hole.
- the first auxiliary terminal L1 is arranged in various manners, and only a sealing connection between the first auxiliary terminal L1 and the insulating cover 1 is required, and the first auxiliary terminal L1 is electrically connected to the conductive layer 14.
- the first auxiliary terminal L1 is encapsulated in the auxiliary terminal hole by a sealant, and the bottom end of the first auxiliary terminal L1 is in conduction with the conductive layer 14 by contact.
- the conductive layer 14 at least partially covers the inner wall of the auxiliary terminal hole, the first auxiliary terminal L1 is sealingly soldered into the auxiliary terminal hole, and is electrically connected to the conductive layer 14 located in the auxiliary terminal hole.
- the first auxiliary terminal L1 can be directly electrically connected to the conductive layer 14 of the top inner surface of the insulating cover 1 without completely penetrating the auxiliary terminal hole, and only the first auxiliary terminal L1 can pass through the soldering material and the auxiliary terminal hole.
- the conductive layer 14 of the surface may be electrically connected.
- the outer surface of the insulating cover 1 is provided with a cutout 13 which is connected along the two static bridges 3 at the midpoint of the connection of the two static bridges 3
- the outer surface of the insulating cover 1 extends in parallel with a vertical line, and the auxiliary terminal hole is located in the cutout groove 13.
- the creepage distance between the two static contact bridges 3 outside the insulating cover 1 and between the static contact bridge 3 and the first auxiliary terminal L1 can be effectively increased, so that the auxiliary detection structure is safer (understandable)
- the present application is not limited to the above-mentioned escaping groove 13, and other structures may be employed as long as the distance between the two static contact bridges 3 on the outer surface of the insulating cover 1 can be increased, and the static contact bridge 3 and The distance between the first auxiliary terminals L1 on the outer surface of the insulating cover 1 is sufficient).
- the auxiliary terminal hole is located at the edge of the insulating cover 1, at which time the first auxiliary terminal L1 is located at the edge of the insulating cover 1.
- two blocking portions 12 projecting downward may be disposed on the inner surface of the top of the insulating cover 1.
- the two blocking portions 12 are oppositely disposed.
- the conductive layer 14 and the relief portion are located between the two barrier portions 12.
- the second auxiliary terminal L2 may be connected to any portion of the driving structure that is in electrical communication with the drive shaft 4. In other words, that is, connected to the core metal member defined above, for example, the second auxiliary terminal L2 is attached to the upper yoke 51 or the sleeve 7. The second auxiliary terminal L2 is welded to the upper yoke 51 in this example.
- the conductive member 16, the auxiliary spring 17, and the conductive fixing member 18 pass through the drive shaft 4 and the movable iron core 6, the static iron core 5 and the sleeve 7,
- the upper yokes 51 are electrically connected, and the sleeve 7 and the upper yoke 51, which are external components of the relay, can be directly used as the second auxiliary terminal L2, and the sleeve 7 and the upper portion are used only when used.
- the yoke 51 is electrically connected to the auxiliary detecting line through a wire.
- the first auxiliary terminal L1 and the second auxiliary terminal L2 need not be particularly limited in shape or configuration, as long as they can be electrically connected to the core metal member and are suitable for connection with an external auxiliary detecting line.
- the material of the first auxiliary terminal L1 is not particularly limited, and is generally made of a metal having good electrical conductivity and relatively low hardness.
- the material of the first auxiliary terminal L1 is one of metals such as copper, stainless steel, aluminum, and copper alloy.
- the material of the first auxiliary terminal L1 is copper. That is, the first auxiliary terminal L1 is formed by processing a copper wire (or copper core wire) made of copper. The diameter of the copper wire can be adjusted according to the actual situation, for example, it can be 0.5-2 mm.
- the sealing mounting method of the first auxiliary terminal L1 is not particularly limited, and a sealing or brazing method or the like may be employed.
- the first auxiliary terminal L1 is encapsulated in the auxiliary terminal hole by a sealant.
- the sealant may be an epoxy resin or the like.
- brazing may be employed.
- the conductive layer 14 at least partially covers the inner wall of the auxiliary terminal hole, and the first auxiliary terminal L1 is welded in the auxiliary terminal hole by a silver-copper solder seal.
- the above auxiliary conduction structure includes a conductive member 16 which is disposed in order from top to bottom, an elastic member such as an electrically conductive auxiliary spring 17, and a conductive fixing member 18.
- the conductive fixing member 18 is fixed on the driving shaft 4 above the movable contact bridge 2 (specifically, above the upper insulating cover 42). Both ends of the auxiliary spring 17 abut against the conductive fixing member 18 and the conductive member 16, respectively.
- the conductive member 16 is disposed on the driving shaft 4 and movable along the driving shaft 4. When the driving shaft 4 moves upward, the movable contact bridge 2 and the static contact bridge 3 can be turned on, and the conductive member 16 is driven. The conductive layer 14 is in contact with the conductive layer. When the driving shaft 4 moves downward, the movable contact bridge 2 can be disconnected from the static contact bridge 3, and the conductive member 16 is driven to be disconnected from the conductive layer 14.
- the auxiliary spring 17 elastically supports the conductive member 16 under the conductive member 16, and the buffer spring 8 elastically supports the lower insulating cover 41 and the movable contact bridge 2 under the lower insulating cover 41.
- the function of the driving structure is to drive the driving shaft 4 to move up and down to make the moving contact bridge 2 and the static contact bridge 3 conductive or disconnected.
- the upward movement of the drive shaft 4 brings the moment when the movable contact bridge 2 and the static contact bridge 3 are turned on, and the conductive member 16 and The conductive layer 14 is not necessarily turned on at the same instant, and only when the driving structure drives the driving shaft 4 to move upward until the movable contact bridge 2 and the static contact bridge 3 are stably in contact with each other, the conductive member 16 moves synchronously upward with the driving shaft 4 and The conductive layer 14 can be stably contacted and turned on.
- the conductive member 16 and the conductive layer 14 are not necessarily disconnected at the same instant, and only the drive structure is required to drive the drive shaft 4
- the conductive member 16 moves downward with the drive shaft 4 and is completely disengaged from the conductive layer 14.
- the above-mentioned conductive fixing member 18 is used for fixing and supporting the auxiliary spring 17, and realizes electrical connection between the auxiliary spring 17 and the drive shaft 4.
- the conductive fixing member 18 can adopt a circlip.
- the above-mentioned conductive member 16 is in contact with and electrically connected to the auxiliary spring 17.
- the conductive member 16 may be a metal washer.
- the conductive member 16, the auxiliary spring 17, and the conductive fixing member 18 are sleeved on the driving shaft 4.
- the lower end of the auxiliary spring 17 abuts against the conductive fixing member 18, and is supported by the conductive fixing member 18.
- the upper end of the auxiliary spring 17 abuts against the conductive member.
- an upward tension is applied to the conductive member 16.
- the auxiliary spring 17 provides a buffer margin in the case of ensuring that the conductive member 16 is in close contact with the conductive layer 14, making the entire structure more stable.
- the conductive member 16 is movable up and down on the drive shaft 4.
- a limiting structure may be disposed on the driving shaft 4 to limit the conductive member 16 from above the conductive member 16.
- the upper end portion of the drive shaft 4 forms a stopper portion 4a.
- the outer diameter of the limiting portion 4a is larger than the inner diameter of the conductive member 16 and smaller than the outer diameter of the conductive member 16.
- the top of the drive shaft 4 forms a "T" type structure.
- the auxiliary conduction structure moves upward with the driving shaft 4, the top of the driving shaft 4 penetrates into the inner groove 15 or the inner concave hole 15', and the conductive member 16 and the inner groove 15 or the inner concave hole 15 are located.
- the conductive layer 14 at the edge of the opening is in contact with the conduction. That is, the position of the conductive layer 14 needs to correspond to the conductive member 16, specifically located directly above the conductive member 16.
- the first auxiliary terminal L1 and the second auxiliary terminal L2 are connected to the external auxiliary detection line, and the external auxiliary detection line and the first auxiliary terminal L1, the second auxiliary terminal L2, and the above-mentioned core metal are connected.
- the components form a loop, which is called the auxiliary detection loop to distinguish the main loop from the control loop.
- the relay installation process is as follows: First, the conductive layer 14 is metallized in a corresponding region of the insulating cover 1. Then, the first auxiliary terminal L1, the static contact bridge 3 and the connecting table 10 are welded on the insulating cover 1, and then the conductive member 16, the auxiliary spring 17, the conductive fixing member 18, the upper insulating cover 42, the movable contact bridge 2, and the lower The insulating cover 41, the buffer spring 8 and the washer 81 are attached to the drive shaft 4 and finally fixed by a snap spring 82.
- the upper yoke 51, the static iron core 5, the return spring 9, the moving iron core 6, and the sleeve 7 are sequentially mounted to the drive shaft 4, and the movable iron core 6 is fixed to the drive shaft 4 by laser welding or screwing, and is prepared.
- a drive structure incorporating the drive shaft 4 is obtained.
- the sleeve 7 is then welded to the lower portion of the upper yoke 51, and then the welded insulating cover 1 and the drive structure in which the drive shaft 4 is assembled are welded to the joint 10.
- a coil, a casing (not shown), and the like are assembled outside the sleeve 7, and the relay provided in this example is obtained.
- the working process of the relay is described as follows: the first auxiliary terminal L1 and the second auxiliary terminal L2 are connected to the external auxiliary detecting line, so that the external auxiliary detecting line and the first auxiliary terminal L1, the second auxiliary terminal L2 and the core are connected
- the body metal parts constitute an auxiliary detection circuit. As shown in FIG. 2 to FIG.
- the conductive member 16 at the top end is in contact with the conductive layer 14 on the inner surface of the top surface of the insulating cover 1, so that the first auxiliary terminal L1 and the driving shaft 4 are electrically connected, and the circuit is turned on at this time.
- the auxiliary detection circuit detects that the drive shaft 4 is electrically connected to the first auxiliary terminal L1, and proves that the relay is working normally.
- the relay When the relay is required to be turned on, and the contact is not turned on, the relay is not turned on, and the auxiliary detection circuit detects that the relay is in an on state (ie, the drive shaft 4 has driven the movable contact bridge 2 to move upward), thereby judging A contact failure causes the main circuit to not conduct.
- the relay when the contact separation is required, and the contact still has a bonding failure, the relay is actually energized, and the auxiliary detection circuit detects that the relay is in a short-circuit state (ie, the drive shaft 4 has driven the movable contact bridge 2) Lower movement), thereby judging that the contacts are stuck and causing the relay to be in a conducting state, which is advantageous for discharging safety hazards.
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Abstract
本发明提供一种继电器,包括绝缘罩、两个静触桥、动触桥、驱动轴和驱动结构;绝缘罩顶部内表面设有导电层;继电器包括辅助导通结构和辅助检测结构;辅助导通结构包括导电件和在下方弹性支撑导电件的弹性件;导电件设于驱动轴上,驱动轴向上运动带动动触桥与静触桥导通,且导电件与导电层导通;驱动轴向下运动带动动触桥与静触桥断开,且导电件与导电层断开;辅助检测结构包括第一辅助端子和第二辅助端子;第一辅助端子电连接至导电层;第二辅助端子电连接至导电件。
Description
本发明涉及继电器领域。
现有继电器一般包括绝缘罩、两个静触桥、动触桥、驱动轴和驱动结构。所述两个静触桥固定安装在所述绝缘罩上。所述驱动轴的上端伸入所述绝缘罩内,所述动触桥通过绝缘部件安装在所述驱动轴上端。所述驱动结构安装在所述驱动轴的下端,用于驱动所述驱动轴带动所述动触桥运动,使所述两个静触桥与所述动触桥吸合或者断开。上述静触桥和动触桥接触的点称为触点,静触桥上的触点称为静触点,动触桥上的点称为动触点。
驱动结构一般由动铁芯、静铁芯、线圈、轭铁、复位弹簧等组成。在线圈通电时,静铁芯产生电磁吸力,动铁芯在电磁吸力作用下带动驱动轴克服复位弹簧的弹力向上运动,驱动轴带动动触桥与固定在绝缘罩上的静触桥接触,从而导通继电器。当线圈断电时,静铁芯产生的电磁吸力消失,复位弹簧带动驱动轴向下运动,使动触桥和静触桥分离,从而断开继电器。
然而,申请人在研发和生产继电器的过程中发现,现有继电器时有发生继电器该导通时触点不导通,或触点该分离时触点仍然粘接的故障,导致继电器失效,发生安全事故。
发明内容
为克服现有继电器时有发生该导通时触点不导通,或触点该分离时触点仍然粘接的故障,导致继电器失效,发生安全事故的问题,本发明提供了一种继电器。
本发明提供了一种继电器,包括绝缘罩、两个静触桥、动触桥、驱动轴和驱动结构;所述两个静触桥固定安装在所述绝缘罩上;所述驱动轴的上端伸入所述绝缘罩内,所述动触桥安装在所述驱动轴上部;所述驱动结构安装在所述驱动轴的下端,用于驱动所述驱动轴带动所述动触桥运动;所述绝缘罩顶部内表面具有可供所述驱动轴顶端伸入的避让部;所述绝缘罩顶部内表面还设有导电层;所述继电器还包括辅助导通结构和辅助检测结构;所述辅助导通结构包括弹性件和导电件;所述弹性件在所述导电件下方弹性支撑所述导电件;所述导电件可沿所述驱动轴运动的设置于所述驱动轴上;所述驱动轴的向上运动可带动动触桥与静触桥导通,同时带动导电件与所述导电层接触导通;所述驱动轴的向下运动可带动动触桥与静触桥断开,同时带动导电件与所述导电层脱离断开;所述辅助检测结构包括第一辅助端子和第二辅助端子;所述第一辅助端子设置于所述绝
缘罩顶部并电连接至所述导电层;所述第二辅助端子电连接至所述导电件。
本发明提供的继电器,在现有继电器的基础上增加了辅助检测结构,使用时将第一辅助端子和第二辅助端子与外接的辅助检测线路相接。当驱动轴向上运动使动触桥与两个静触桥同时接触,继电器导通。此时,导电件随驱动轴同步上移并与导电层接触导通,第一辅助端子通过导电件和驱动轴与第二辅助端子导通。当驱动轴向下运动,使动触桥与两个静触桥同时分离,继电器断开。此时导电件随驱动轴同步下移并与导电层脱离。第一辅助端子与第二辅助端子断开。如此,当出现继电器该导通时触点不导通,或触点该分离时触点仍然粘接的故障时,可以通过该辅助检测线路快速检测出上述故障,及时采取措施,防止由于继电器失效导致的安全事故的发生。
优选地,所述驱动轴为导体;所述导电件电连接至所述驱动轴;所述第二辅助端子设置于所述驱动结构上并与所述驱动轴电连通。
优选地,所述弹性件为导电的辅助弹簧;所述辅助导通结构还包括位于所述辅助弹簧下方的导电固定件;所述导电固定件固定于所述动触桥上方的驱动轴上;所述辅助弹簧两端分别抵止于所述导电固定件和导电件上。
优选地,所述驱动轴顶端具有限制所述导电件向上运动的限位部;所述弹性件将所述导电件抵止于所述限位部上。
优选地,所述绝缘罩顶部内表面形成有作为所述避让部的内凹槽;所述导电层至少同时覆盖所述绝缘罩内表面的局部和内凹槽内表面的局部。
优选地,所述绝缘罩顶部内表面形成有作为所述避让部的内凹孔;所述导电层至少覆盖所述绝缘罩内表面位于内凹孔边缘的部分区域。
优选地,所述绝缘罩顶部内表面具有向下延伸的凸台,所述凸台局部向上凹陷形成所述避让部;所述避让部为内凹槽,所述导电层至少同时覆盖所述凸台下表面的局部和内凹槽内表面的局部;或者,所述避让部为内凹孔;所述导电层至少覆盖所述凸台下表面位于内凹孔边缘的部分区域。
优选地,所述绝缘罩顶部内表面设有向下突出的两个阻挡部;所述两个阻挡部相对设置;所述导电层和所述避让部位于所述两个阻挡部之间。
上述两个阻挡部可增加两个静触桥之间的爬电距离,同时也能增大导电层与静触桥的爬电距离,保证了辅助线路的安全性。并且上述阻挡部还可防止拉弧时铜屑的飞溅而将静触桥与导电层意外导通而破坏辅助线路判定的准确性和安全性。
优选地,所述绝缘罩顶部具有贯穿所述绝缘罩的辅助端子孔;所述辅助端子孔位于所述导电层覆盖区域内;所述第一辅助端子通过密封胶封装在所述辅助端子孔内,并且所述第一辅助端子的底端与所述导电层接触导通。
优选地,所述绝缘罩顶部具有贯穿所述绝缘罩的辅助端子孔;所述辅助端子孔位于所述导电层覆盖区域内;所述导电层至少局部覆盖所述辅助端子孔的内壁,所述第一辅助端子密封焊接于所述辅助端子孔内,并与位于所述辅助端子孔内的导电层导通。
优选地,所述绝缘罩外表面设有避空槽,所述避空槽在两个静触桥连线的中点处沿
与两个静触桥连线的与所述绝缘罩的外表面平行的垂线延伸;所述第一辅助端子位于所述避空槽内。
优选地,所述第一辅助端子位于所述绝缘罩边缘。
上述避空槽可增加两个静触桥之间的爬电距离以及静触桥与第一辅助端子之间的爬电距离,保证了辅助线路的安全性。
优选地,所述动触桥通过绝缘部件安装在所述驱动轴上部;所述绝缘部件包括上绝缘罩和下绝缘罩,所述上绝缘罩和下绝缘罩组合套在所述驱动轴上端,将所述动触桥绝缘安装在所述驱动轴上。
优选地,所述驱动结构包括上轭铁、静铁芯、动铁芯、套筒、复位弹簧、缓冲弹簧和线圈;所述上轭铁通过连接台与所述绝缘罩连接;在上轭铁和绝缘罩之间形成封闭空间;所述上轭铁的中心位置设有轴孔;所述驱动轴的下端从所述轴孔中伸出;所述静铁芯套设于所述上轭铁下方的驱动轴上,所述动铁芯固定安装在所述驱动轴的下端;所述复位弹簧套设于所述静铁芯和动铁芯处之间的驱动轴上;所述缓冲弹簧套在所述上轭铁和所述绝缘罩之间的封闭空间内的驱动轴上,其上端抵顶下绝缘罩,其下端抵顶一垫圈,所述垫圈的下端通过一卡簧限位;所述套筒套装在所述静铁芯和动铁芯外,其上端开口处与上轭铁焊接;所述线圈安装在所述上轭铁下方的套筒外。
优选的,所述第二辅助端子连接在上轭铁或者套筒上。
图1是本发明一个实施例提供的继电器的立体图;
图2是本发明一个实施例提供的继电器断开状态主视中心剖面示意图;
图3是图2中A处放大示意图;
图4是本发明一个实施例提供的继电器断开状态侧视中心剖面示意图;
图5是图4中B处放大示意图;
图6是本发明一个实施例提供的继电器导通状态主视中心剖面示意图;
图7是图6中C处放大示意图;
图8是本发明一个实施例提供的继电器导通状态侧视中心剖面示意图;
图9是图8中D处放大示意图;
图10是本发明一个实施例提供的继电器中,驱动轴与辅助导通结构装配状态立体图;
图11是本发明一个实施例提供的继电器中,驱动轴与辅助导通结构装配状态剖视图;
图12是本发明一个实施例提供的继电器中,驱动轴与辅助导通结构***图;
图13是本发明一个实施例提供的继电器中,绝缘罩与第一辅助端子装配体状态仰视图;
图14是本发明一个实施例提供的继电器中,绝缘罩与第一辅助端子装配体状态主
视中心剖面示意图;
图15是图14中E处放大示意图;
图16是本发明另一实施方式中,绝缘罩与第一辅助端子装配体状态仰视图;
图17是本发明另一实施方式中,绝缘罩与第一辅助端子装配体状态主视中心剖面示意图;
图18是图17中F处放大示意图。
其中,1、绝缘罩;2、动触桥;3、静触桥;4、驱动轴;5、静铁芯;6、动铁芯;7、套筒;8、缓冲弹簧;9、复位弹簧;10、连接台;11、静触孔;12、阻挡部;13、避空槽;14、导电层;15、内凹槽;15'、内凹孔;L1、第一辅助端子;L2、第二辅助端子;4a、限位部;41、下绝缘罩;42、上绝缘罩;51、上轭铁;81、垫圈;82、卡簧;16、导电件;17、辅助弹簧;18、导电固定件。
为了使本发明所解决的技术问题、技术方案及有益效果更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
在本发明的描述中,需要理解的是,术语“上”、“下”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“设置”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本实用新型中的具体含义。
图1-图15示出了本发明提供的继电器的实施例。
该继电器包括绝缘罩1、两个静触桥3、动触桥2、驱动轴4和驱动结构。
上述绝缘罩1为常规材质制成并具有常规结构。通常,本领域中,上述绝缘罩1采用陶瓷材质制成。
所述两个静触桥3固定安装在所述绝缘罩1上。
所述驱动轴4的上端伸入所述绝缘罩1内,所述动触桥2通过绝缘部件安装在所述驱动轴4上部,绝缘部件与动触桥2相互固定。绝缘部件连同动触桥2可沿驱动轴4上下运动。驱动轴4的结构和材质可与现有技术中的相同,例如,驱动轴4可以为导体或绝缘体。
所述驱动结构安装在所述驱动轴4的下端,用于驱动所述驱动轴4带动所述动触桥2运动,使所述动触桥2与所述两个静触桥3导通或者断开。
所述动触桥2和静触桥3均为公众所知,所述动触桥2可以为中心带孔的片状金属,
其与静触桥3接触处称为动触点,动触桥2安装于驱动轴4的上端。为避免从驱动轴4处漏电,在继电器中,需保证没有漏电通道形成于动触桥2和驱动轴4之间。因此,在驱动轴4为绝缘体时,动触桥2可直接设置于驱动轴4上。当驱动轴4为导体时,动触桥2需通过绝缘部件设置于驱动轴4上。本实施方式中,驱动轴4为导体,动触桥2需通过绝缘部件设置于驱动轴4上。例如,驱动轴4的上端套装绝缘部件后,动触桥2再安装在该绝缘部件上。绝缘部件将动触桥2与驱动轴4绝缘,同时相互固定的动触桥2和绝缘部件可沿驱动轴4移动。
所述静触桥3一般通过钎焊的方式安装在绝缘罩1上,具体地,如图13、图14中所示,绝缘罩1的顶面上设有两个用于安装静触桥3的安装孔,简称静触孔11,上述两个静触桥3即通过钎焊焊接在该两个静触孔11内。
该静触桥3包括伸入绝缘罩1中的内端和伸出绝缘罩1的外端。其内端用于与动触桥2接触,接触处称为静触点。外端上则形成连接孔,用来与外接主回路的导线相接,静触桥3通过连接孔与外接主回路连接后,动触桥2、静触桥3和外接高压电路形成回路。动触点和静触点的接触和分离即实现了继电器中主回路的导通和断开。
其中,所述绝缘部件用来使动触桥2和驱动轴4绝缘隔离,其可以采用本领域已知的绝缘部件。本例中,如图2-图9所示,绝缘部件包括上绝缘罩42和下绝缘罩41,所述上绝缘罩42和下绝缘罩41组合套在所述驱动轴4上,将所述动触桥2安装在所述驱动轴4上并与驱动轴4绝缘,并且相互固定的动触桥2和绝缘部件可沿驱动轴4移动。上绝缘罩42、下绝缘罩41将驱动轴4与动触桥2、静触桥3隔离,进而将高低压绝缘,避免低压端元器件的损坏及击穿现象的发生,从而提升了产品的品质及安全性。
其中,所述驱动结构可以采用本领域技术人员已知的各种结构,本例中,如图1-图12所示,所述驱动结构包括上轭铁51、静铁芯5、动铁芯6、套筒7、复位弹簧9、缓冲弹簧8和线圈(图中未示出)。
所述上轭铁51通过连接台10与所述绝缘罩1连接。在上轭铁51和绝缘罩1之间形成封闭空间。所述上轭铁51的中心位置处设有轴孔。由于材料的影响,上轭铁51不能直接焊接在绝缘罩1上,因此,通过该连接台10实现上轭铁51和绝缘罩1的连接。该连接台10为金属材质制成,其预先焊接在绝缘罩1下部,上轭铁51再焊接在该连接台10上。
所述驱动轴4的下端从所述上轭铁51中心位置处的轴孔中伸出,所述静铁芯5套设于所述上轭铁51下方的驱动轴4上,驱动轴4可相对于静铁芯5上下运动。所述动铁芯6固定安装在所述驱动轴4的下端。动铁芯6位于静铁芯5下方。也即驱动轴4的上端穿过该上轭铁51的轴孔伸入上述上轭铁51和绝缘罩1之间形成的封闭空间中。具体地,所述动铁芯6通过激光焊接或者螺纹连接的方式固定在所述驱动轴4的下端。
线圈形成的回路为控制回路,控制回路的导通和断开控制静铁芯5的电磁吸力。上述动触点和静触点均为构成继电器主回路的触点。为了与后续第一辅助端子L1的导电层14和驱动轴4上的导电件16电连接处的触点相区别,将该静触点和动触点归类为主
触点,而将导电层14和和导电件16的接触处称为辅助触点。
所述复位弹簧9套装在所述静铁芯5和动铁芯6之间的驱动轴4上,并且复位弹簧9的两端分别抵靠于静铁芯5和动铁芯6上,对动铁芯6和静铁芯5施加相互分离的张力。复位弹簧9被设置在静铁芯5和动铁芯6之间,当线圈通电时,动铁芯6受静铁芯5的电磁吸力向上运动时压缩该复位弹簧9,积蓄弹力,当线圈断电时,复位弹簧9在弹力的作用下复位,驱动动铁芯6向下运动。
所述缓冲弹簧8套在所述上轭铁51和所述绝缘罩1之间的封闭空间内的驱动轴4上,其上端抵顶下绝缘罩41,其下端抵顶一垫圈81,所述垫圈81的下端通过一卡簧82限位。垫圈81能够减小卡簧82的受力,防止其脱落。
所述套筒7套装在所述静铁芯5和动铁芯6外,其上端开口处与上轭铁51焊接。
所述线圈(图中未示出)安装在所述上轭铁51下方的套筒7外。
由于上述上轭铁51、静铁芯5、动铁芯6、套筒7和驱动轴4均为金属材质,上述部件均电连通,为方便描述,称其为芯体金属件。
本发明的目的在于在继电器内设置判断继电器是否实际导通的辅助结构。
对于继电器中的绝缘罩1,在驱动轴4上下运动过程中,为避免驱动轴4顶端与绝缘罩1顶部相干涉,所述绝缘罩1顶部内表面具有可供所述驱动轴4顶端伸入的避让部。该避让部的结构可以为常规的各种结构,只需满足可供所述驱动轴4顶端伸入和脱离即可。例如,避让部可直接从绝缘罩1顶部内表面向内(即绝缘罩顶部内表面向绝缘罩顶部外表面的方向)凹陷形成,也可以为绝缘罩1顶部内表面具有向下延伸的凸台,凸台下表面的局部向内凹陷形成上述避让部。例如,本实施方式中,凸台下表面的局部向内凹陷形成上述避让部,该避让部可以为内凹槽15(如图13-图15所示)或内凹孔15’(如图16-图18所示)。
同时,绝缘罩1顶部内表面还设有导电层14。设置该导电层14的目的在于在驱动轴4向上运动时,该导电层14与设置于驱动轴4上的导电件16电接触。可以理解的,避让部的开口处表面为用于与导电件16电接触的部位。因此,导电层14的覆盖区域至少应覆盖绝缘罩1上用于与导电件16对应接触的部位。当上述避让部为内凹孔15’时,所述导电层14至少覆盖所述凸台下表面的位于内凹孔15’边缘的部分区域。而当上述避让部为内凹槽15时,所述导电层14至少同时覆盖所述凸台下表面的局部和内凹槽15内表面的局部。
上述导电层14可以采用常规的金属层,即将陶瓷上的对应区域金属化。在陶瓷表面形成金属层的工艺和方法为现有的,本发明中不再详细赘述。
上述继电器包括辅助导通结构和辅助检测结构。如图1-图9所示,所述辅助检测结构包括第一辅助端子L1和第二辅助端子L2。
其中,第一辅助端子L1设置于绝缘罩1顶部,并电连接至所述导电层14。例如,可在绝缘罩1顶部设置一贯穿绝缘罩1顶部的辅助端子孔。理论上,辅助端子孔可以设置在绝缘罩1上任意位置,只需第一辅助端子L1能通过辅助端子孔实现与导电层14电
连接即可。为便于加工,简化工艺,该辅助端子孔位于导电层14覆盖区域内。辅助端子孔可设置于两个静触桥3之间的中心位置,在本实施例中,为增加第一辅助端子L1与静触桥3之间的爬电距离,辅助端子孔位于两个静触桥3之间的中心偏后的位置,具体为辅助端子孔位于绝缘罩1边缘,此时,辅助端子孔与两个静触桥3的连线形成等腰三角形(如图13或图16所示)。
可以理解的,辅助端子孔可以位于内凹槽15或内凹孔15’之内,也可以位于内凹槽15或内凹孔15’之外。当辅助端子孔位于内凹槽15或内凹孔15’之外时,导电层14只需覆盖辅助端子孔所在位置即可。当辅助端子孔位于内凹槽15或内凹孔15’之内时,导电层14至少覆盖辅助端子孔所在位置的内凹槽15或内凹孔15’底面。
第一辅助端子L1通过上述辅助端子孔设置于绝缘罩1上。第一辅助端子L1的设置方式有多种,只需保证第一辅助端子L1与绝缘罩1之间密封连接,并且第一辅助端子L1电连接至导电层14。例如,所述第一辅助端子L1通过密封胶封装在所述辅助端子孔内,并且所述第一辅助端子L1的底端与所述导电层14通过接触导通。或者,所述导电层14至少局部覆盖所述辅助端子孔的内壁,所述第一辅助端子L1密封焊接于所述辅助端子孔内,并与位于所述辅助端子孔内的导电层14导通。此时,第一辅助端子L1可无需完全贯穿所述辅助端子孔而直接与绝缘罩1顶部内表面的导电层14电连接,只需保证第一辅助端子L1可经焊接材料与辅助端子孔内表面的导电层14电连接即可。
本具体实施方式中,所述绝缘罩1外表面设有避空槽13,所述避空槽13在两个静触桥3连线的中点处沿两个静触桥3连线的与所述绝缘罩1的外表面平行的垂线延伸,所述辅助端子孔位于所述避空槽13内。设置该避空槽13,可以有效增加绝缘罩1外部两静触桥3之间,以及静触桥3与第一辅助端子L1之间的爬电距离,使辅助检测结构更加安全(可以理解的是,本申请并不限于所述的避空槽13,也可以采用其它结构,只要能增大两个静触桥3之间的在绝缘罩1外表面上的距离,和静触桥3与第一辅助端子L1之间的在绝缘罩1外表面上的距离即可)。如前所述,为更充分的增加爬电距离,优选的,辅助端子孔位于绝缘罩1边缘,此时第一辅助端子L1位于所述绝缘罩1边缘。
同样的,还可以在所述绝缘罩1顶部内表面设置向下突出的两个阻挡部12。所述两个阻挡部12相对设置。并且所述导电层14和所述避让部(内凹孔15’或内凹槽15)位于所述两个阻挡部12之间。通过该阻挡部12可以有效增加绝缘罩1内部两静触桥3之间,以及静触桥3与第一辅助端子L1之间的爬电距离,同时防止了拉弧时铜屑飞溅导致主触点与辅助触点的导通,保证继电器辅助检测回路的准确性和安全性。
所述第二辅助端子L2可以连接在驱动结构上与所述驱动轴4电连通的任意部位上。换句话说,也即连接在上面定义的芯体金属件上,例如,所述第二辅助端子L2连接在上轭铁51或者套筒7上。本例中所述第二辅助端子L2焊接在上轭铁51上。作为另一种替代方式,在前述的驱动轴4为导体的情况下,导电件16、辅助弹簧17、导电固定件18经驱动轴4与动铁芯6、静铁芯5和套筒7、上轭铁51均电连接,作为继电器外部部件的套筒7、上轭铁51均可直接作为第二辅助端子L2,使用时只需将套筒7、上
轭铁51通过导线电连接至辅助检测线路即可。
上述第一辅助端子L1和第二辅助端子L2无需特别限制其形状或者结构,只要其能实现与上述芯体金属件电连接,并适合与外接的辅助检测线路连接即可。
关于该第一辅助端子L1的材料,并不特别限制,一般由导电性能良好,硬度相对较低的金属制成。
比如,所述第一辅助端子L1的材质为铜、不锈钢、铝、铜合金等金属中的一种。本例中,所述第一辅助端子L1的材质为铜。即该第一辅助端子L1为铜制作的铜导线(或称铜芯线)加工而成。铜导线的直径可根据实际情况进行调整,例如可以为0.5-2mm。
关于该第一辅助端子L1的密封安装方式,并不特别限定,其可以采用胶封或者钎焊的方式等。
比如,所述第一辅助端子L1通过密封胶封装在所述辅助端子孔内。密封胶可以为环氧树脂等。
又比如,也可以采用钎焊的方式,所述导电层14至少局部覆盖所述辅助端子孔的内壁,所述第一辅助端子L1通过银铜焊料密封焊接在所述辅助端子孔内。
如图2-图12所示,上述辅助导通结构包括从上至下依次设置的导电件16、弹性件例如导电的辅助弹簧17和导电固定件18。所述导电固定件18固定于所述动触桥2上方(具体为上绝缘罩42的上方)的驱动轴4上。所述辅助弹簧17两端分别抵止于所述导电固定件18和导电件16上。所述导电件16设置于所述驱动轴4上并可沿所述驱动轴4运动,所述驱动轴4向上运动时可带动动触桥2与静触桥3导通,同时带动导电件16与所述导电层14接触导通。所述驱动轴4向下运动时可带动动触桥2与静触桥3断开,同时带动导电件16与所述导电层14断开。
辅助弹簧17在导电件16下方弹性支撑导电件16,缓冲弹簧8在下绝缘罩41下方弹性支撑下绝缘罩41和动触桥2。并且驱动结构的作用在于驱动驱动轴4上下运动以使动触桥2与静触桥3导通或断开。因此,需要注意的是,由于上述辅助弹簧17和缓冲弹簧8提供的缓冲作用,本发明中,驱动轴4的向上运动带动动触桥2与静触桥3导通的瞬间,导电件16与导电层14并非一定在同一瞬间导通,只需在驱动结构驱动驱动轴4向上运动直至动触桥2与静触桥3稳定接触导通时,导电件16随驱动轴4同步向上运动并与导电层14稳定接触导通即可。类似的,驱动轴4的向下运动带动动触桥2与静触桥3脱离断开的瞬间,导电件16与导电层14并非一定在同一瞬间断开,只需在驱动结构驱动驱动轴4向下运动直至动触桥2与静触桥3完全脱离时,导电件16随驱动轴4同步向下运动并与导电层14完全脱离即可。
上述导电固定件18用于固定支撑辅助弹簧17,并实现辅助弹簧17与驱动轴4之间的电连接。本实施方式中,该导电固定件18可采用卡簧。上述导电件16与辅助弹簧17接触并电连接。例如,该导电件16可采用金属垫圈。导电件16、辅助弹簧17、导电固定件18均套设于驱动轴4上,辅助弹簧17下端抵靠于导电固定件18上,由导电固定件18支撑,辅助弹簧17上端抵靠于导电件16上,对导电件16施加向上的张力。在导
电件16随驱动轴4向上运动并与导电层14接触时,辅助弹簧17在保证导电件16与导电层14紧密接触的情况下,提供缓冲余量,使整个结构更稳定。导电件16可在驱动轴4上上下运动。
为提高辅助导通结构的使用稳定性,还可在驱动轴4上设置限位结构从导电件16的上方对导电件16进行限位。如本实施方式中,驱动轴4上端部形成限位部4a。限位部4a的外径大于导电件16的内径,小于导电件16的外径。此时,驱动轴4顶部形成“T”型结构。
可以理解的,上述辅助导通结构随驱动轴4向上运动时,驱动轴4的顶部深入上述内凹槽15或内凹孔15’内,导电件16与位于内凹槽15或内凹孔15’开口边缘的导电层14接触导通。即,导电层14所在位置需与导电件16相对应,具***于导电件16正上方。
如此,使用继电器时,将第一辅助端子L1和第二辅助端子L2与外接的辅助检测线路相连接,使外接的辅助检测线路与第一辅助端子L1、第二辅助端子L2和上述芯体金属件构成回路,为区别主回路和控制回路,称为辅助检测回路。
所述继电器安装过程如下:首先在绝缘罩1对应区域金属化形成导电层14。然后将第一辅助端子L1、静触桥3和连接台10焊接在绝缘罩1上,然后依次将导电件16、辅助弹簧17、导电固定件18、上绝缘罩42、动触桥2、下绝缘罩41、缓冲弹簧8和垫圈81安装至驱动轴4,最后用卡簧82固定。然后依次将上轭铁51、静铁芯5、复位弹簧9、动铁芯6和套筒7安装至驱动轴4,将动铁芯6通过激光焊接或者螺纹的方式与驱动轴4固定,制备得到装有驱动轴4的驱动结构。然后将套筒7焊接在上轭铁51下部,然后将焊好的绝缘罩1与装配好驱动轴4的驱动结构与连接台10焊接。最后在套筒7外装配线圈、外壳(图中未示出)等,即获得本例提供的继电器。
所述继电器工作过程描述如下:将第一辅助端子L1和第二辅助端子L2与外接的辅助检测线路相连接,使外接的辅助检测线路与第一辅助端子L1、第二辅助端子L2和上述芯体金属件构成辅助检测回路。如图2-图5所示状态,当线圈未通电时,动触桥2和静触桥3分离,继电器不导通,同时位于驱动轴4顶端的导电件16与绝缘罩1顶部内表面的导电层14分离,辅助检测线路探测到驱动轴4与第一辅助端子L1不导通,证明继电器未导通。如图6-图9所示,当线圈通电,驱动动铁芯6带动固定的驱动轴4带动动触桥2与固定在陶瓷腔体上的静触桥3接触,继电器正常工作,同时驱动轴4顶端的导电件16与绝缘罩1顶部内表面的导电层14接触导通,使第一辅助端子L1与驱动轴4导通,此时回路导通。辅助检测线路探测到该驱动轴4与第一辅助端子L1导通,证明继电器正常工作。
当需要继电器导通,而触点未导通时,继电器未导通,而通过辅助检测线路探测到继电器处于导通状态(即驱动轴4已驱动动触桥2向上运动),由此可判断触点故障导致主回路未导通。相反,当需要触点分离,而触点仍然粘接故障时,继电器实际处于通电状态,通过辅助检测线路探测到继电器处于短路状态(即驱动轴4已驱动动触桥2向
下运动),由此可判断触点出现粘连而导致继电器处于导通状态,利于排出安全隐患。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本发明的保护范围之内。
Claims (16)
- 一种继电器,其特征在于,包括绝缘罩、两个静触桥、动触桥、驱动轴和驱动结构;所述两个静触桥固定安装在所述绝缘罩上;所述驱动轴的上端伸入所述绝缘罩内,所述动触桥安装在所述驱动轴上部;所述驱动结构安装在所述驱动轴的下端,用于驱动所述驱动轴带动所述动触桥运动;所述绝缘罩顶部内表面还设有导电层;所述继电器还包括辅助导通结构和辅助检测结构;所述辅助导通结构包括弹性件和导电件;所述弹性件在所述导电件下方弹性支撑所述导电件;所述导电件设置于所述驱动轴上并可沿所述驱动轴运动;所述驱动轴向上运动时可带动动触桥与静触桥导通,同时带动导电件与所述导电层接触导通;所述驱动轴向下运动时可带动动触桥与静触桥断开,同时带动导电件与所述导电层断开;所述辅助检测结构包括第一辅助端子和第二辅助端子;所述第一辅助端子设置于所述绝缘罩顶部并电连接至所述导电层;所述第二辅助端子电连接至所述导电件。
- 根据权利要求1所述的继电器,其特征在于,所述绝缘罩顶部内表面具有可供所述驱动轴顶端伸入的避让部。
- 根据权利要求2所述的继电器,其特征在于,所述驱动轴为导体;所述导电件电连接至所述驱动轴;所述第二辅助端子设置于所述驱动结构上并与所述驱动轴电连通。
- 根据权利要求3所述的继电器,其特征在于,所述弹性件为导电的辅助弹簧;所述辅助导通结构还包括位于所述辅助弹簧下方的导电固定件;所述导电固定件固定于所述动触桥上方的驱动轴上;所述辅助弹簧两端分别抵止于所述导电固定件和导电件上。
- 根据权利要求2所述的继电器,其特征在于,所述驱动轴顶端具有限制所述导电件向上运动的限位部;所述弹性件将所述导电件抵止于所述限位部上。
- 根据权利要求2所述的继电器,其特征在于,所述绝缘罩顶部内表面形成有作为所述避让部的内凹槽;所述导电层至少同时覆盖所述绝缘罩内表面的局部和内凹槽内表面的局部。
- 根据权利要求2所述的继电器,其特征在于,所述绝缘罩顶部内表面形成有作为所述避让部的内凹孔;所述导电层至少覆盖所述绝缘罩内表面位于内凹孔边缘的部分区域。
- 根据权利要求2所述的继电器,其特征在于,所述绝缘罩顶部内表面具有向下延伸的凸台,所述凸台局部向内凹陷形成所述避让部;所述避让部为内凹槽,所述导电层至少同时覆盖所述凸台下表面的局部和内凹槽内表面的局部;或者,所述避让部为内凹孔;所述导电层至少覆盖所述凸台下表面位于内凹孔边缘的部分区域。
- 根据权利要求2-7中任意一项所述的继电器,其特征在于,所述绝缘罩顶部内表面设有向下突出的两个阻挡部;所述两个阻挡部相对设置;所述导电层和所述避让部位于所述两个阻挡部之间。
- 根据权利要求1-7中任意一项所述的继电器,其特征在于,所述绝缘罩顶部具有贯穿所述绝缘罩的辅助端子孔;所述辅助端子孔位于所述导电层覆盖区域内;所述第一辅助端子通过密封胶封装在所述辅助端子孔内,并且所述第一辅助端子的底端与所述导电层通过接触导通。
- 根据权利要求1-7中任意一项所述的继电器,其特征在于,所述绝缘罩顶部具有贯穿所述绝缘罩的辅助端子孔;所述辅助端子孔位于所述导电层覆盖区域内;所述导电层至少局部覆盖所述辅助端子孔的内壁,所述第一辅助端子密封焊接于所述辅助端子孔内,并与位于所述辅助端子孔内的导电层导通。
- 根据权利要求2-7中任意一项所述的继电器,其特征在于,所述绝缘罩外表面设有避空槽,所述避空槽在两个静触桥连线的中点处沿两个静触桥连线的与所述绝缘罩的外表面平行的垂线延伸;所述第一辅助端子位于所述避空槽内。
- 根据权利要求12所述的继电器,其特征在于,所述第一辅助端子位于所述绝缘罩边缘。
- 根据权利要求1-7中任意一项所述的继电器,其特征在于,所述动触桥通过绝缘部件安装在所述驱动轴上部;所述绝缘部件包括上绝缘罩和下绝缘罩,所述上绝缘罩和下绝缘罩组合套在所述驱动轴上端,将所述动触桥绝缘安装在所述驱动轴上。
- 根据权利要求14所述的继电器,其特征在于,所述驱动结构包括上轭铁、静铁芯、动铁芯、套筒、复位弹簧、缓冲弹簧和线圈;所述上轭铁通过连接台与所述绝缘罩连接;在上轭铁和绝缘罩之间形成封闭空间;所述上轭铁的中心位置设有轴孔;所述驱动轴的下端从所述轴孔中伸出;所述静铁芯套设于所述上轭铁下方的驱动轴上,所述动铁芯固定安装在所述驱动轴的下端;所述复位弹簧套设于所述静铁芯和动铁芯处之间的驱动轴上;所述缓冲弹簧套在所述上轭铁和所述绝缘罩之间的封闭空间内的驱动轴上,其上端抵顶下绝缘罩,其下端抵顶一垫圈,所述垫圈的下端通过一卡簧限位;所述套筒套装在所述静铁芯和动铁芯外,其上端开口处与上轭铁焊接;所述线圈安装在所述上轭铁下方的套筒外。
- 根据权利要求15所述的继电器,其特征在于,所述第二辅助端子连接在上轭 铁或者套筒上。
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