CN213691894U - High-capacity relay with auxiliary contact isolation mechanism - Google Patents
High-capacity relay with auxiliary contact isolation mechanism Download PDFInfo
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- CN213691894U CN213691894U CN202022726581.0U CN202022726581U CN213691894U CN 213691894 U CN213691894 U CN 213691894U CN 202022726581 U CN202022726581 U CN 202022726581U CN 213691894 U CN213691894 U CN 213691894U
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Abstract
The utility model relates to the technical field of relays, and discloses a high-capacity relay with an auxiliary contact isolation mechanism, which comprises a shell, a push rod assembly and a sealing tube, wherein an inlet wire static contact and an outlet wire static contact are arranged at the top of the shell, a magnetic conduction block is arranged at the bottom of the shell, the push rod assembly is composed of an insulating plate, a moving contact and a push rod which are contained in the shell, and the sealing tube is contained with a moving iron core connected with the push rod; the auxiliary contact assembly comprises an auxiliary movable spring which is insulated and isolated from the movable contact and at least one group of leading-out rods which penetrate through the side wall of the shell, the auxiliary movable spring comprises an installation plate which is coaxially and fixedly arranged on the insulation plate and two auxiliary movable contacts which are arranged on the installation plate, each group of leading-out rods comprises m leading-out rods, and m is 2 or 3; and the isolating piece is arranged on the magnetic conduction block and sleeved with the insulating plate, and an isolating chamber is arranged on the isolating piece at a position close to the auxiliary movable contact and used for covering the auxiliary movable spring and a connecting part of the auxiliary movable spring and the leading-out rod so as to isolate metal splashes or other foreign matters.
Description
Technical Field
The utility model relates to a relay technical field especially relates to a high capacity relay with auxiliary contact isolation mechanism.
Background
The relay is an electric control device which makes the controlled quantity generate a predetermined step change in an electric output circuit when the change of the input quantity (excitation quantity) reaches the specified requirement, and is composed of a control system (also called an input circuit) and a controlled system (also called an output circuit) which are interactively matched, and plays the roles of automatic regulation, safety protection, circuit conversion and the like in the circuit. With the rise of green energy, high capacity relay is widely used in high voltage direct current loads such as on-vehicle, photovoltaic and charging pile, and in view of the above-mentioned application scenario of high voltage direct current load, often need set up auxiliary contact to monitor the state of main contact and carry out low pressure coordinated control to promote security and the reliability that electrical equipment used.
In the traditional relay, a group of auxiliary contacts are added on the top of a ceramic cavity to realize monitoring of a main contact, the structure is simpler, but the main contact and the auxiliary contacts are simultaneously distributed on the top of the ceramic, so that the high-low load isolation effect is poor; when the main contact breaks the load, the electric arc is easy to jump to the auxiliary contact, so that high and low loads are communicated, even the auxiliary contact is burnt, and potential safety hazards exist; metal particles splashed by the main contact easily pollute the auxiliary contact, and the reliability of the auxiliary contact cannot be ensured; the switch logic of the auxiliary contact of the structure is single, and the auxiliary contact is synchronously switched on and off with the main contact, so that the action under the opposite logic is difficult to realize; the auxiliary contact of the structure is single in form and only has a normally-open structure, so that the requirement of the relay on the normally-closed auxiliary contact is difficult to meet; the size of the auxiliary contacts is large, only one group of auxiliary contacts can be arranged at the top of the ceramic cavity, and when a plurality of groups of auxiliary contacts need to be arranged, the size of the relay structure is increased, and the structure is complex; in addition, lack effective isolation between the auxiliary contact of traditional relay and the main contact, when main contact arcing ablation, splatter such as metal particle can sputter on the auxiliary contact, and then causes the auxiliary contact to become invalid to influence the reliability of relay, be unfavorable for promoting the market competition of product.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a high-capacity relay with an auxiliary contact isolation mechanism in response to the disadvantages of the conventional high-capacity relay.
A high capacity relay with an auxiliary contact isolation mechanism, the high capacity relay comprising:
the top of the shell is respectively provided with an incoming line static contact used for being connected with current by an external power supply device and an outgoing line static contact used for transmitting the current to external electrical equipment in a penetrating manner, and the bottom of the shell is provided with a magnetic conduction block;
the push rod assembly comprises an insulating plate accommodated in the inner cavity of the shell and abutted against the magnetic conduction block, a push rod fixedly connected with the insulating plate and a moving contact elastically connected with the push rod, and the moving contact is accommodated in the inner cavity of the shell and can move relative to the inner wall of the shell along the height direction of the shell;
the sealing tube is covered with the push rod, the top of the sealing tube is welded with the bottom of the magnetic conduction block, and a movable iron core is accommodated in the sealing tube and used for pushing the push rod to act;
the auxiliary contact assembly comprises an auxiliary movable spring which is insulated and isolated from the movable contact and at least one group of leading-out rods which penetrate through the side wall of the shell, the auxiliary movable spring comprises an installation plate which is coaxially and fixedly arranged on the insulation plate and a pair of auxiliary movable contacts which are respectively arranged on two lateral sides of the installation plate, each group of leading-out rods comprises m leading-out rods, and m is 2 or 3;
when m is 2, two leading-out rods in each group of leading-out rods respectively penetrate through one side wall of the shell and are correspondingly matched with one auxiliary moving contact; when m is 3, one leading-out rod in each group of leading-out rods penetrates through one side wall of the shell and is matched with one auxiliary moving contact, and the other two leading-out rods in each group of leading-out rods penetrate through the same side wall, different from the side wall where the previous leading-out rod is located, of the shell and are arranged along the height direction of the shell to form a limiting part for limiting the movement range of the other auxiliary moving contact on the auxiliary moving contact; and
the isolating piece is arranged on the magnetic conduction block and sleeved with the insulating plate, and an isolating chamber is arranged on the isolating piece at a position close to the auxiliary moving contact and used for covering the auxiliary moving spring and a connecting part of the auxiliary moving spring and the leading-out rod so as to isolate metal splashes or other foreign matters;
the push rod pushes the moving contact to move under the action of the movable iron core so as to switch on and off the incoming line static contact and the outgoing line static contact, and drives the auxiliary movable spring to contact or leave the leading-out rod so as to form a switch-on loop or a switch-off loop.
In one embodiment, the inner surface of the shell is provided with a rib plate, and the spacer is provided with a relief part which is in concave-convex fit with the rib plate.
In one embodiment, an arched guard plate covering the auxiliary movable spring and the connecting part of the auxiliary movable spring and the leading-out rod is arranged on the isolating piece at a position adjacent to the auxiliary movable contact to form an isolating chamber.
In one embodiment, the top of the arched guard plate is provided with a baffle for increasing the shielding area of the arched guard plate.
In one embodiment, a plurality of reinforcing plates are arranged on the partition side by side, and two adjacent reinforcing plates and the partition form a collecting groove together for receiving metal splashes.
In one embodiment, the shell comprises a ceramic casing and a transition block connected with an opening part of the ceramic casing through high-temperature brazing, and the magnetic conduction block is installed at the bottom of the outer surface of the transition block.
In one embodiment, the ring side of the spacer is provided with a flange ring, which abuts against the bottom of the ceramic shell and is surrounded by the transition block.
In one embodiment, the bottom of the isolating part is provided with a concave hole, and the magnetic conduction block is provided with a convex column in limit fit with the concave hole.
In one embodiment, when m is 2, the distance from the leading-out rod to the bottom of the sealing tube is less than the distance from the auxiliary moving contact to the bottom of the sealing tube.
In one embodiment, when m is 2, the distance from the leading-out rod to the bottom of the sealing tube is greater than the distance from the auxiliary moving contact to the bottom of the sealing tube.
Implement the utility model discloses a high capacity relay with auxiliary contact isolation mechanism, with the inlet wire static contact and the static contact of being qualified for the next round of competitions, main contact sets up the top at the casing promptly, with a plurality of draw forth the pole set up on two relative inside walls of casing, and with supplementary movable contact and push rod cooperation, make the push rod in the action of control moving contact, adjust supplementary movable contact and draw forth the break-make relation of pole, so that the operating personnel judge the inlet wire static contact and the connected condition of the static contact of being qualified for the next round of competitions according to the monitoring facilities who is connected with the pole of drawing forth, judge the operating condition of relay promptly, because supplementary movable contact is kept apart with the moving contact is insulating, keep apart high low pressure load promptly, and increased the distance between main contact. The main contact and the auxiliary contact assembly are respectively arranged on the top of the shell and the side wall of the shell, so that the creepage distance and the air distance are increased, the isolation effect of high and low loads is improved, the influence or damage of electric arcs generated in the working process of the main contact on the auxiliary contact assembly is avoided, the use safety and reliability of the relay are improved, and the service life of the relay is prolonged; by arranging one or more groups of leading-out rods and setting the position relation of each group of leading-out rods, the number and the matching mode of the auxiliary contacts can be selected according to the requirements of users so as to meet the use requirements; the auxiliary contact assembly is arranged on the side wall of the shell, so that the occupied area is small, the volume of a product cannot be increased, and the adaptability of the size of the relay to general electrical equipment is improved; in addition, the magnetic conduction block is provided with the isolating piece used for covering the connecting part of the auxiliary movable spring and the leading-out rod, so that metal splashes generated when the main contact is burnt and ablated can be prevented from splashing on the auxiliary contact assembly, the isolation protection of the auxiliary contact assembly is realized, the reliability of the relay is ensured, and the market competitiveness of the product is improved.
Drawings
Fig. 1 is a schematic structural diagram of a high capacity relay according to an embodiment of the present invention;
FIG. 2 is a schematic view of a downward cross-sectional configuration of the high-capacity relay in the embodiment of FIG. 1;
fig. 3 is a schematic cross-sectional view of the high-capacity relay in another direction in the embodiment of fig. 1;
FIG. 4 is an exploded view of the high capacity relay of the embodiment of FIG. 1;
FIG. 5 is a schematic view of a spacer according to an embodiment of the present invention;
fig. 6 is a schematic view of another perspective of the spacer in the embodiment of fig. 5.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
Referring to fig. 1, 2 and 4 together, the present invention provides a high capacity relay 10 with an auxiliary contact isolation mechanism, the high capacity relay 10 includes a housing 100 having an incoming line static contact 110 and an outgoing line static contact 120 penetrating through the top thereof and a magnetic conductive block 130 arranged at the bottom thereof; the push rod assembly 200 is composed of a movable contact 210 which is accommodated in the inner cavity of the shell 100 and can move relative to the inner wall of the shell 100 along the height direction of the shell 100, a push rod 220 which is elastically connected with the movable contact 210 and is used for pushing the movable contact 210 to act, and an insulating plate 230 which is accommodated in the inner cavity of the shell 100, is fixedly connected with the push rod 220 and is abutted against the magnetic conduction block 130; the push rod 220 is covered and arranged, the top of the push rod is welded with the bottom of the magnetic conduction block 130, and the inner cavity of the push rod is provided with a sealing tube 300 for accommodating a movable iron core 400 used for pushing the push rod 220 to move; and the auxiliary contact assembly 500, the auxiliary contact assembly 500 includes an auxiliary movable spring 510 insulated and isolated from the movable contact 210 and at least one group of leading-out rods 520 penetrating through the side wall of the housing 100, the auxiliary movable spring 510 includes an installation plate 511 coaxially and fixedly arranged on the insulation plate 230 and a pair of auxiliary movable contacts 512 respectively arranged at two sides of the installation plate 511, each group of leading-out rods 520 includes m leading-out rods 520, m is 2 or 3, the push rod 220 pushes the movable contact 210 to move under the action of the movable iron core 400 to make and break the incoming line static contact 110 and the outgoing line static contact 120, and drives the auxiliary movable spring 510 to contact or leave the leading-out rods 520, so as to form a circuit connection or a circuit disconnection.
For the auxiliary contact assembly 500, two auxiliary movable contacts 512 may be located on adjacent or opposite sides of the mounting plate 511. That is, two auxiliary movable contacts 512 may be provided on both sides of the mounting plate 511, or may be provided on adjacent sides of the mounting plate 511, to improve flexibility in the positional arrangement of the lead-out bars 520, so that the structure of the relay 10 is adapted to the shape of the electrical appliance. When m is 2, two lead-out rods 520 of each group of lead-out rods 520 respectively penetrate through one side wall of the housing 100 and are correspondingly matched with one auxiliary movable contact 512, that is, it can be understood that one lead-out rod 520 is respectively arranged on any two side walls of the housing 100. When m is 3, one leading-out rod 520 in each group of leading-out rods 520 penetrates through one side wall of the shell 100 and is matched with one auxiliary movable contact 512, and the other two leading-out rods 520 in each group of leading-out rods 520 penetrate through the same side wall, different from the side wall where the previous leading-out rod 520 is located, of the shell 100 and are arranged along the height direction of the shell 100, so that a limiting part for limiting the movement range of the other auxiliary movable contact 512 on the auxiliary movable spring 510 is formed; that is, it can be understood that one extraction rod 520 is provided on one side wall of the housing 100, and two extraction rods 520 are provided on any one side wall other than the side wall.
It should be noted that in practical applications, the two auxiliary moving contacts 512 may also be located on the same side of the mounting plate 511, so that during the assembly and assembly of the relay 10, in both cases where m is 2 and m is 3, each of the outgoing rods 520 is disposed on the same side wall of the housing 100. Specifically, when m is 2, two of the lead-out bars 520 of each group of lead-out bars 520 penetrate through the same sidewall of the housing 100 and are correspondingly matched with one auxiliary movable contact 512. When m is 3, three lead-out bars 520 of each group of lead-out bars 520 are penetrated through the same side wall of the case 100, one of the lead-out bars 520 is engaged with one auxiliary movable contact 512, and the other two lead-out bars 520 are arranged in the height direction of the case 100 and form a limit part for limiting the movement range of the other auxiliary movable contact 512 on the auxiliary movable contact 510, in which case the auxiliary contact assembly 500 includes at least one group of conversion type auxiliary contacts. It should be noted that the height direction of the housing 100 in the present embodiment is a direction from the top of the housing 100 to the bottom of the housing 100, and other embodiments can be explained with reference to this.
Referring to fig. 3, fig. 4 and fig. 5, the high-capacity relay 10 of the present invention further includes a spacer 600, the spacer 600 is installed on the magnetic conductive block 130 and sleeved with the insulating plate 230, that is, the middle portion of the spacer 600 is provided with a central hole 610 corresponding to the insulating plate 230, and an isolation chamber 620 is disposed on the spacer 600 at a position adjacent to the auxiliary movable contact 512 for covering the auxiliary movable contact 510 and the connecting portion between the auxiliary movable contact 510 and the lead-out rod 520 to isolate metal splashes or other foreign matters. It can be understood that the spacer 600 is used to separate the main contact formed by the incoming line static contact 110 and the outgoing line static contact 120 from the auxiliary contact assembly 500, so as to prevent metal ablates generated by arcing during the on/off process of the main contact and the moving contact 210 from splashing onto the auxiliary contact assembly 500, and the high-temperature metal ablates further conduct heat to the auxiliary contact assembly 500, thereby causing the problem of damage to the auxiliary contact assembly 500, so as to prolong the service life of the auxiliary contact assembly 500, and thus ensure the reliability of the state monitoring operation of the high-capacity relay 10.
Referring to fig. 5, in one embodiment, an isolating member 600 is provided with an arc-shaped shield 630 covering the auxiliary movable spring 510 and the connecting portion between the auxiliary movable spring 510 and the withdrawing rod 520 at a position adjacent to the auxiliary movable contact 512 to form an isolating chamber 620. Through setting up arch backplate 630, when the cover establishes supplementary movable spring 510 and draws forth the connecting portion of pole 520, wear to establish the passageway for supplementary movable contact 512 provides, satisfy the protection to supplementary movable spring 510 and the connecting portion of drawing pole 520 simultaneously promptly and do benefit to supplementary movable contact 210 and draw forth the cooperation of pole 520 to do benefit to the effective of relay 10 state monitoring operation and go on.
Further, in an embodiment, a baffle 640 is disposed at the top of the arched shield 630 for increasing the shielding area of the arched shield, so as to protect the auxiliary movable spring 510 and the connection portion between the auxiliary movable spring 510 and the leading-out rod 520, and improve the reliability of the isolating member 600.
In one embodiment, the partition 600 is provided with a plurality of reinforcing plates 650, and two adjacent reinforcing plates 650 and the partition 600 together form a collecting trough 660 for receiving the metal splashes. Preferably, the bilateral symmetry of centre bore 610 is equipped with a plurality of collecting troughs 660, promotes isolator 600 mechanical strength, when avoiding isolator 600 to receive the impact fracture, accepts the metal splash, avoids the metal splash to spatter the dregs collection difficulty problem that causes all around to reduce the processing degree of difficulty of metal splash.
The housing 100 is used to isolate an arc generated when the incoming line static contact 110 and the outgoing line static contact 120 are conducted through the movable contact 210 from an external environment, so as to improve the safety of the use of the relay 10. In one embodiment, the casing 100 includes a ceramic casing 140 and a transition block 150 connected to the opening of the ceramic casing 140 by high temperature brazing, and the magnetic conducting block 130 is mounted at the bottom of the outer surface of the transition block 150. The ceramic cover 140 is used to block the burning of the inner surface of the housing 100 by the metal spatters generated by the arc, so as to further improve the safety of the use of the relay 10. The magnetic conduction block 130 is made of a ferromagnetic material, and is used for isolating the housing 100 from the sealing tube 300, so as to prevent electric arcs generated in the switching processes of the incoming static contact 110 and the outgoing static contact 120 from affecting the operation of the movable iron core 400, so as to improve the operation reliability of the relay 10, and in addition, the magnetic conduction block 130 is further used for forming a magnetic conduction loop together with each component of the auxiliary contact assembly 500 when the auxiliary contact assembly 500 operates, so as to ensure the operation stability and reliability of the auxiliary contact assembly 500.
Referring to fig. 2 and 5, in an embodiment, a flange ring 670 is disposed on a ring side of the spacer 600, and the flange ring 670 abuts against the bottom of the ceramic housing 140 and is surrounded by the transition block 150, so that the spacer 600 is difficult to shake along the height direction of the housing 100 under the constraint of the ceramic housing 140, thereby limiting the spacer 600, i.e., improving the mounting stability of the spacer 600, and ensuring the working reliability of the relay 10.
Referring to fig. 4 and fig. 6, in an embodiment, a concave hole 680 is formed at the bottom of the spacer 600, and the magnetic conductive block 130 is provided with a convex pillar 131 that is in limit fit with the concave hole 680. Specifically, in the assembly process of the relay 10, the convex column 131 of the magnetic conductive block 130 is inserted into the concave hole 680 of the spacer 600, that is, the spacer 600 is limited in the plane where the magnetic conductive block 130 is located, the spacer 600 is prevented from sliding relative to the magnetic conductive block 130, and the installation stability of the spacer 600 is further improved.
In one embodiment, the inner surface of the housing 100 is provided with a rib 160, and the spacer 600 is provided with a relief portion 690 that is in concave-convex fit with the rib 160. Preferably, a pair of ribs 160 are disposed in parallel on the inner surface of the ceramic shell 140. The pair of rib plates 160 are arranged on the inner surface of the ceramic housing 140, so that the strength of the ceramic housing 140 is enhanced, and the two rib plates 160 form a limiting part for the moving contact 210 together, so that the moving contact 210 is guided, and the movement reliability of the moving contact 210 is ensured.
The incoming static contact 110 is used for receiving current from an external power supply device, and the outgoing static contact 120 is used for transmitting current to an external electrical device, and both of them are used as a main contact of the high-capacity relay 10 of this embodiment, and can be regarded as a wire for connecting the relay 10 with a load circuit and an external power supply, so as to implement connection or disconnection of the circuit. In an embodiment, the incoming static contact 110 and the outgoing static contact 120 are respectively connected with the ceramic housing 140 of the housing 100 by high temperature brazing, so as to improve the structural stability of the relay 10, and prevent the problem that the incoming static contact 110 and the outgoing static contact 120 are respectively in poor contact with the moving contact 210 when the incoming static contact 110 and the outgoing static contact 120 shake due to external force impact, in addition, the incoming static contact 110 and the ceramic housing 140, and the outgoing static contact 120 and the ceramic housing 140 are connected by high temperature brazing, so that the sealing performance of the housing 100 is improved, the problem of gas leakage filled in the housing 100 during the use process of the relay 10 can be effectively avoided, and the reliability of the operation of the relay 10 is ensured.
The insulation plate 230 is used to mount the auxiliary movable reed 510 on the push rod 220 and to realize insulation isolation of the auxiliary movable reed 510 from the push rod 220. In one embodiment, the insulating plate 230 is made of plastic, for example, the insulating plate 230 may be made of high temperature nylon PA6T or PA 10T.
The auxiliary movable spring 510 is used for contacting or leaving the leading-out rod 520 under the driving of the push rod 220 so as to switch on or off the monitoring equipment connected with the leading-out rod 520, and thus, an operator can judge the on-end condition of the relay 10 by detecting the working state or parameters of the equipment. It should be noted that in the present embodiment, the auxiliary movable spring 510 is isolated from the movable contact 210, so that a high voltage end formed by the incoming line static contact 110 and the outgoing line static contact 120 can be isolated from a low voltage end formed by the auxiliary contact assembly 500, and an arc generated when the movable contact 210 is communicated with the incoming line static contact 110 and the outgoing line static contact 120 is prevented from moving to the auxiliary contact assembly 500, so as to improve the safety of the relay 10 and ensure the reliability of state monitoring performed by the auxiliary contact assembly 500.
The outlet rod 520 is used for being electrically connected with an external monitoring device, so as to transmit the state information inside the relay 10 to the external monitoring device, and grasp the state parameters inside the relay 10. Specifically, when m is 2, one of the two outlet bars 520 is electrically connected to the power supply device, and the other outlet bar 520 is connected to the external electrical device or the control device. When the distance from the leading-out rod 520 to the bottom of the sealing tube 300 is less than the distance from the auxiliary moving contact 512 to the bottom of the sealing tube 300, the auxiliary contact assembly 500 is in a normally closed structure; when the distance from the withdrawing rod 520 to the bottom of the sealing tube 300 is greater than the distance from the auxiliary moving contact 512 to the bottom of the sealing tube 300, the auxiliary contact assembly 500 is a normally open structure. Specifically, the movable iron core 400 has no acting force on the push rod 220 when not excited, the push rod 220 drives the auxiliary movable spring 510 to move towards the direction close to the bottom of the housing 100 in a natural state, so that the movable contact 210 is disconnected from the main contact, when the auxiliary contact assembly 500 is in a normally closed structure, the auxiliary movable spring 510 is electrically connected with the leading-out rod 520 respectively, or when the auxiliary contact assembly 500 is in a normally open structure, the auxiliary movable spring 510 is disconnected from the leading-out rod 520 respectively, so that the connection relationship between the movable contact 210 and the main contact of the relay 10 can be judged according to the working state of external electrical equipment or control equipment, and the working state of the relay 10 is evaluated. In the actual design, the assembly relationship of the auxiliary contact assembly 500 may be combined according to the use scenario of the relay 10, for example, when the auxiliary contact assembly 500 includes two sets of auxiliary contact units, the auxiliary contact unit may be any combination of two sets of normally open auxiliary contact units, two sets of normally closed auxiliary contact units, two sets of switching auxiliary contact units, and three types of auxiliary contact units, which is not described herein again.
In one embodiment, when there are two or more sets of the extraction rods 520, each extraction rod 520 is disposed on the same sidewall or multiple sidewalls of the housing 100. That is, a plurality of auxiliary moving contacts 512 may be provided only at one side of the mounting plate 511, or a plurality of auxiliary moving contacts 512 may be provided at one side of the mounting plate 511, and a different number of auxiliary moving contacts 512 may be provided at the other side of the mounting plate 511, and at the same time, a soldering portion may be provided on the case 100 corresponding to the position of the auxiliary moving contact 512 and a lead bar 520 may be provided, so as to implement a diversified design of contact forms and positions, so as to enrich the monitoring method of the relay 10.
Implement the utility model discloses a high capacity relay 10 with auxiliary contact isolation mechanism, with inlet wire static contact 110 with the static contact 120 of being qualified for the next round of competitions, main contact setting is at the top of casing 100 promptly, with a plurality of pole 520 of drawing forth set up on two relative inside walls of casing 100, and with supplementary movable contact 510 and the cooperation of push rod 220, make push rod 220 in the action of control moving contact 210, adjust supplementary movable contact 510 and the break-make relation of drawing forth pole 520, so that the operating personnel judge the inlet wire static contact 110 and the connected condition of the static contact 120 of being qualified for the next round of competitions according to the monitoring facilities who is connected with drawing forth pole 520, judge the operating condition of relay 10 promptly, because supplementary movable contact 510 is kept apart with moving contact 210 insulation, keep apart high low voltage load promptly, and increased the distance between main contact and the auxiliary contact subassembly. The main contact and the auxiliary contact assembly 500 are respectively arranged at the top of the shell 100 and the side wall of the shell 100, so that the creepage distance and the air distance are increased, the isolation effect of high and low loads is improved, the influence or damage of electric arcs generated in the working process of the main contact on the auxiliary contact assembly 500 is avoided, the use safety and reliability of the relay 10 are improved, and the service life of the relay 10 is prolonged; by arranging one or more groups of leading-out rods 520 and setting the position relation of each group of leading-out rods 520, the number and the matching mode of the auxiliary contacts can be selected according to the requirements of users so as to meet the use requirements; the auxiliary contact assembly 500 is arranged on the side wall of the housing 100, so that the occupied area is small, the volume of a product cannot be increased, and the adaptability of the size of the relay 10 to general electrical equipment is improved; in addition, the magnetic conduction block 130 is provided with the isolating piece 600 for covering the auxiliary movable spring 510 and the connecting part of the auxiliary movable spring 510 and the leading-out rod 520, so that metal splashes generated during the arc burning and ablation of the main contact can be prevented from splashing on the auxiliary contact assembly 500, the isolation protection of the auxiliary contact assembly 500 is realized, the reliability of the relay 10 is ensured, and the market competitiveness of products is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A high capacity relay with auxiliary contact isolation mechanism, comprising:
the top of the shell is respectively provided with an incoming line static contact used for being connected with current by an external power supply device and an outgoing line static contact used for transmitting the current to external electrical equipment in a penetrating manner, and the bottom of the shell is provided with a magnetic conduction block;
the push rod assembly comprises an insulating plate accommodated in the inner cavity of the shell and abutted against the magnetic conduction block, a push rod fixedly connected with the insulating plate and a moving contact elastically connected with the push rod, and the moving contact is accommodated in the inner cavity of the shell and can move relative to the inner wall of the shell along the height direction of the shell;
the sealing tube is covered with the push rod, the top of the sealing tube is welded with the bottom of the magnetic conduction block, and a movable iron core is accommodated in the sealing tube and used for pushing the push rod to act;
the auxiliary contact assembly comprises an auxiliary movable spring which is insulated and isolated from the movable contact and at least one group of leading-out rods which penetrate through the side wall of the shell, the auxiliary movable spring comprises an installation plate which is coaxially and fixedly arranged on the insulation plate and a pair of auxiliary movable contacts which are respectively arranged on two lateral sides of the installation plate, each group of leading-out rods comprises m leading-out rods, and m is 2 or 3;
when m is 2, two leading-out rods in each group of leading-out rods respectively penetrate through one side wall of the shell and are correspondingly matched with one auxiliary moving contact; when m is 3, one leading-out rod in each group of leading-out rods penetrates through one side wall of the shell and is matched with one auxiliary moving contact, and the other two leading-out rods in each group of leading-out rods penetrate through the same side wall, different from the side wall where the previous leading-out rod is located, of the shell and are arranged along the height direction of the shell to form a limiting part for limiting the movement range of the other auxiliary moving contact on the auxiliary moving contact; and
the isolating piece is arranged on the magnetic conduction block and sleeved with the insulating plate, and an isolating chamber is arranged on the isolating piece at a position close to the auxiliary moving contact and used for covering the auxiliary moving spring and a connecting part of the auxiliary moving spring and the leading-out rod so as to isolate metal splashes or other foreign matters;
the push rod pushes the moving contact to move under the action of the movable iron core so as to switch on and off the incoming line static contact and the outgoing line static contact, and drives the auxiliary movable spring to contact or leave the leading-out rod so as to form a switch-on loop or a switch-off loop.
2. The high-capacity relay according to claim 1, wherein a rib is provided on an inner surface of the case, and the spacer is provided with a relief portion that is engaged with the rib in a concavo-convex manner.
3. The high capacity relay according to claim 1, wherein an arched shield covering the auxiliary movable contact spring and a connecting portion of the auxiliary movable spring and the lead-out rod is provided on the spacer at a position adjacent to the auxiliary movable contact to form a separation chamber.
4. The high-capacity relay according to claim 3, wherein a baffle is provided on a top of the arched shield for increasing a shielding area of the arched shield.
5. The high-capacity relay according to claim 1, wherein the spacer is provided with a plurality of reinforcing plates side by side, and adjacent two reinforcing plates form a collecting groove together with the spacer for receiving metal splashes.
6. The high-capacity relay according to claim 1, wherein the housing comprises a ceramic casing and a transition block connected with an opening portion of the ceramic casing by high-temperature brazing, and the magnetic conduction block is mounted at the bottom of the outer surface of the transition block.
7. The high-capacity relay according to claim 6, wherein the ring side of the spacer is provided with a flange ring abutting against the bottom of the ceramic case and surrounded by the transition block.
8. The high-capacity relay according to claim 6, wherein a concave hole is formed in the bottom of the isolating member, and a convex column which is in limit fit with the concave hole is arranged on the magnetic conducting block.
9. The high capacity relay according to any one of claims 1 to 8, wherein when m is 2, a distance from the extraction rod to the bottom of the hermetic tube is smaller than a distance from the auxiliary movable contact to the bottom of the hermetic tube.
10. The high capacity relay according to any one of claims 1 to 8, wherein when m is 2, a distance from the extraction rod to the bottom of the hermetic tube is greater than a distance from the auxiliary movable contact to the bottom of the hermetic tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022726581.0U CN213691894U (en) | 2020-11-23 | 2020-11-23 | High-capacity relay with auxiliary contact isolation mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022726581.0U CN213691894U (en) | 2020-11-23 | 2020-11-23 | High-capacity relay with auxiliary contact isolation mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112331525A (en) * | 2020-11-23 | 2021-02-05 | 东莞市中汇瑞德电子股份有限公司 | High-capacity relay with auxiliary contact isolation mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112331525A (en) * | 2020-11-23 | 2021-02-05 | 东莞市中汇瑞德电子股份有限公司 | High-capacity relay with auxiliary contact isolation mechanism |
| WO2022105056A1 (en) * | 2020-11-23 | 2022-05-27 | 东莞市中汇瑞德电子股份有限公司 | High capacity relay having auxiliary contact isolation mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220707 Address after: 241199 building 11, lvzhuang standardized workshop, Xinwu Economic Development Zone, Wanhe District, Wuhu City, Anhui Province Patentee after: Zhonghui Sensata Technology (Wuhu) Co.,Ltd. Address before: No.20, Xingui Road, Lin village, Tangxia Town, Dongguan City, Guangdong Province, 523000 Patentee before: CHUROD ELECTRONICS Co.,Ltd. |
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| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CHUROD ELECTRONICS Co.,Ltd. Assignor: Zhonghui Sensata Technology (Wuhu) Co.,Ltd. Contract record no.: X2023980033353 Denomination of utility model: A High Capacity Relay with Auxiliary Contact Isolation Mechanism Granted publication date: 20210713 License type: Common License Record date: 20230307 |