CN213519780U - High-reliability large-current relay - Google Patents

Abstract

The utility model discloses a high reliable heavy current relay, include: the box, the coil box, the iron core, the coil, coil terminal and first spout, first spout has been seted up from top to bottom at the inner wall right side top of box, the coil box sets up in the inner wall bottom of box, the iron core sets up in the bottom middle part of coil box, and the top of iron core extends the inner chamber of coil box, the coil from top to bottom twines on the outer wall of iron core, the quantity of coil terminal is two, two coil terminals set up respectively in the both ends of coil, and two coil terminals all run through the bottom of box. This high reliable heavy current relay can prevent to open the condition that the dislocation appears in the movable contact that opens normally to prevent that open the movable contact and the contact failure that opens normally leads to the electric conductivity to descend, and can reduce the production of electric arc, thereby prevent that the contact position from taking place abnormal heating, prevent that phenomena such as fusing, dissolving solidification appear in the contact from taking place, thereby prevent that the relay from becoming invalid.

Description

High-reliability large-current relay

Technical Field

The utility model relates to an electrical components technical field specifically is a high reliable heavy current relay.

Background

The relay is an electronic control device, which has a control system (also called input loop) and a controlled system (also called output loop), is usually applied to an automatic control circuit, and is actually an 'automatic switch' for controlling a larger current by using a smaller current, so that the relay plays roles of automatic regulation, safety protection, circuit switching and the like in the circuit;

the movable contact and the stationary contact of traditional relay relapse the switch and produce electric arc easily, thereby lead to contact position center to take place unusual generating heat, and the contact appears fusing easily, dissolve the emergence of phenomenon such as solidification, thereby lead to the relay inefficacy, and certain dislocation phenomenon appears easily in the movable contact of traditional relay after frequent swing, thereby lead to incomplete with the stationary contact, and then cause movable contact and stationary contact to contact badly, lead to the electric conductivity decline of contact, lead to the contact to become invalid even.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a to solve at least that the continuous emergence of switch electric arc appears easily in the frequent contact of prior art movable contact and stationary contact and disconnection, thereby lead to the contact position to generate heat easily, and the contact appears fusing easily, dissolves phenomenons such as solidification, leads to the relay inefficacy, and the movable contact appears the condition of dislocation easily behind frequent switch, leads to movable contact and stationary contact to contact incompletely, thereby leads to the decline of contact conductivity, the problem of contact inefficacy even.

In order to achieve the above object, the utility model provides a following technical scheme: a highly reliable high current relay comprising: the top of the right side of the inner wall of the box body is provided with a first sliding chute from top to bottom; the coil box is arranged at the bottom end of the inner wall of the box body; the iron core is arranged in the middle of the bottom end of the coil box, and the top end of the iron core extends out of the inner cavity of the coil box; the coil is wound on the outer wall of the iron core from top to bottom; the coil terminals are arranged at two ends of the coil respectively, and both the two coil terminals penetrate through the bottom end of the box body; the number of the lifting mechanisms is two, and one ends of the two lifting mechanisms are respectively arranged on the left side and the right side of the top end of the coil box; the left side and the right side of the bottom end of the insulating block are both provided with storage grooves, the storage grooves are sleeved on the outer wall of the lifting mechanism, and the top end of the inner wall of each storage groove is fixedly connected with the other end of the lifting mechanism; the iron block is arranged in the middle of the bottom end of the insulating block, and the position of the iron block corresponds to that of the iron core; the limiting mechanism is arranged at the top end of the insulating block; the two ends of the limiting rod are respectively arranged at the upper end and the lower end of the inner cavity of the first sliding chute; the sealing box is arranged at the top of the right side of the inner wall of the box body, the position of the sealing box corresponds to that of the first sliding groove, and a second sliding groove is formed in the left side of the sealing box from top to bottom; the middle part of the outer wall of the normally open movable contact is embedded in the limiting mechanism, the left end of the normally open movable contact extends out of the top end of the box body, and the right end of the normally open movable contact extends into the inner cavity of the sealing box through the second sliding groove; the normally open static contact is arranged at the top of the right side of the box body, the left end of the normally open static contact extends into the inner cavity of the seal box, and the normally open static contact is arranged below the first sliding groove; the normally closed static contact is arranged at the top of the left side wall of the box body, and the right end of the normally closed static contact extends into the inner cavity of the box body; the second connecting block is arranged at the top of the left side of the insulating block; the bottom end of the normally closed movable contact is in contact with the right end of the normally closed stationary contact, and the top end of the normally closed movable contact penetrates through the upper surface of the box body.

Preferably, the lifting mechanism includes: one end of the support rod is arranged on the outer side of the top end of the coil box, the other end of the support rod is embedded in the inner cavity of the storage groove, and a telescopic groove is formed in the top end of the support rod from top to bottom; the rubber pad is arranged on the inner wall of the telescopic groove; one end of the telescopic rod is fixedly arranged at the top end of the inner wall of the storage groove, and the other end of the telescopic rod is fixedly connected to the top end of the inner cavity of the telescopic groove; the spring, the spring cup joints in the outer wall of telescopic link, just the both ends of spring joint respectively in the inner wall top of storage tank and the top of bracing piece.

Preferably, the limiting mechanism comprises: the fixed block is arranged at the top end of the insulating block and is sleeved in the middle of the outer wall of the normally open movable contact; one side of the supporting plate is arranged at the top of the right side wall of the fixing block, the other side of the supporting plate penetrates through the second chute, extends into the inner cavity of the seal box and is embedded in the inner cavity of the first chute, and the supporting plate is slidably sleeved at the top of the outer wall of the limiting rod; the first connecting block is arranged in the middle of the bottom end of the supporting plate and sleeved on the middle of the outer wall of the normally-open movable contact.

Preferably, the distance from the iron block to the iron core is the same as the distance from the right end of the normally open movable contact to the left end of the normally open stationary contact.

Preferably, the first sliding groove is dovetail-shaped, and the supporting plate is inserted into the inner cavity of the first sliding groove in a matching manner.

Preferably, the lengths of the storage groove and the telescopic groove are both greater than the distance between the iron block and the iron core.

Compared with the prior art, the beneficial effects of the utility model are that: this high reliable heavy current relay, thereby utilize elevating system to reach and to make the insulating block rise or descend thereby control normally open stationary contact and normally open movable contact, normally closed stationary contact and normally closed movable contact are connected or the disconnection, and the rubber pad can slow down the speed of connecting or breaking off between the contact, the seal box can reduce the air flow between normally open movable contact and the normally open stationary contact, thereby reduce the production of electric arc, utilize stop gear, the position of normally open movable contact can be fixed to the cooperation of first spout and gag lever post, prevent the condition that normally open movable contact misplaces from appearing, thereby prevent that normally open movable contact and normally open stationary contact are bad to lead to the electric conductivity to descend, and can reduce the production of electric arc, thereby prevent that the contact position from taking place to generate heat unusually, prevent that fusing from appearing in the contact, dissolve, phenomenon such as solidification takes.

Drawings

FIG. 1 is a front sectional view of the present invention;

FIG. 2 is a front sectional view of the lifting mechanism;

fig. 3 is a connection diagram of the sealing box, the supporting plate and the normally open moving contact.

In the figure: 1. the coil box comprises a box body, 2, a coil box, 3, an iron core, 4, a coil, 5, a coil terminal, 6, a lifting mechanism, 61, a supporting rod, 62, a telescopic groove, 63, a rubber pad, 64, a telescopic rod, 65, a spring, 7, an insulating block, 8, a limiting mechanism, 81, a fixing block, 82, a supporting plate, 83, a first connecting block, 9, an iron block, 10, a normally closed stationary contact, 11, a normally open stationary contact, 12, a first sliding groove, 13, a limiting rod, 14, a sealing box, 15, a normally closed movable contact, 16, a normally open movable contact, 17, a storage groove, 18, a second sliding groove, 19 and a second connecting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a high-reliability large-current relay, which includes: the coil box comprises a box body 1, a coil box 2, an iron core 3, coils 4, coil terminals 5, a lifting mechanism 6, an insulating block 7, a limiting mechanism 8, an iron block 9, a normally closed stationary contact 10, a normally open stationary contact 11, a first chute 12, a limiting rod 13, a seal box 14, a normally closed movable contact 15, a normally open movable contact 16, a storage groove 17, a second chute 18 and a second connecting block 19, wherein the first chute 12 is formed in the top of the right side of the inner wall of the box body 1 from top to bottom, the coil box 2 is arranged at the bottom end of the inner wall of the box body 1, the iron core 3 is arranged in the middle of the bottom end of the coil box 2, the top end of the iron core 3 extends out of the inner cavity of the coil box 2, the coils 4 are wound on the outer wall of the iron core 3 from top to bottom, when the coils 4 are electrified, the iron core 3 can generate magnetism, the number of the coil terminals 5, the number of the lifting mechanisms 6 is two, one end of each of the two lifting mechanisms 6 is respectively arranged at the left side and the right side of the top end of the coil box 2, the lifting mechanisms 6 are used for assisting the insulating block 7 to ascend or descend, the left side and the right side of the bottom end of the insulating block 7 are respectively provided with the storage groove 17, the storage grooves 17 are sleeved on the outer wall of the lifting mechanisms 6, the top end of the inner wall of each storage groove 17 is fixedly connected with the other end of each lifting mechanism 6, the iron block 9 is arranged in the middle of the bottom end of the insulating block 7, the position of the iron block 9 corresponds to the position of the iron core 3, when the iron core 3 generates magnetism, the insulating block 7 can be driven to move downwards by attracting the iron block 9, the limiting mechanism 8 is arranged at the top end of the insulating block 7, the limiting mechanism 8 can limit the normally-open movable contact 16, the two ends of the, the sealing box 14 is arranged at the top of the right side of the inner wall of the box body 1, the position of the sealing box 14 corresponds to the position of the first chute 12, the sealing box 14 can reduce the air at the connecting part of the normally open movable contact 16 and the normally open stationary contact 11, the left side of the sealing box 14 is provided with the second chute 18 from top to bottom, the normally open movable contact 16 and the supporting plate 82 can slide up and down in the inner cavity of the second chute 18, the middle part of the outer wall of the normally open movable contact 16 is embedded in the limiting mechanism 8, the left end of the normally open movable contact 16 extends out of the top end of the box body 1, the right end of the normally open movable contact 16 extends into the inner cavity of the sealing box 14 through the second chute 18, the normally open stationary contact 11 is arranged at the top of the right side of the box body 1, the left end of the normally open stationary contact 11 extends into the inner cavity of the sealing box 14, the normally open, and the right-hand member of normally closed stationary contact 10 extends into the inner chamber of box 1, and second connecting block 19 sets up in the left side top of insulating block 7, and second connecting block 19 is used for fixed normally closed movable contact 15, and the fixed embedded inner chamber in second connecting block 19 in outer wall middle part of normally closed movable contact 15, and the bottom of normally closed movable contact 15 contacts with the right-hand member of normally closed stationary contact 10, and the top of normally closed movable contact 15 runs through the upper surface of box 1.

Preferably, the lifting mechanism 6 further includes: a support rod 61, a telescopic groove 62, a rubber pad 63, a telescopic rod 64 and a spring 65, wherein one end of the support rod 61 is arranged at the outer side of the top end of the coil box 2, the other end of the support rod 61 is embedded in the inner cavity of the storage groove 17, the support rod 61 is used for limiting the position of the insulating block 7, the top end of the support rod 61 is provided with a telescopic groove 62 from top to bottom, a rubber pad 63 is arranged on the inner wall of the telescopic groove 62, the rubber pad 63 can enable the telescopic rod 64 to slowly rise, thereby driving the insulating block 7 to slowly rise, one end of the telescopic rod 64 is fixedly arranged at the top end of the inner wall of the storage groove 17, the other end of the telescopic rod 64 is fixedly connected to the top end of the inner cavity of the telescopic groove 62, the spring 65 is sleeved on the outer wall of the telescopic rod 64, the spring 65 is a rotary spring, and is elastically deformed after being extruded or stretched by force, and is restored to an initial state after external force is removed, and both ends of the spring 65 are respectively clamped on the top end of the inner wall of the storage groove 17 and the top end of the support rod 61.

Preferably, the limiting mechanism 8 further includes: fixed block 81, bracing piece 82 and first connecting block 83, fixed block 81 sets up in the top of insulating block 7, and fixed block 81 cup joints in the outer wall middle part of normally opening movable contact 16, fixed block 81 is used for fixed normally opening movable contact 16 and fixed block 81, one side of backup pad 82 sets up in the right side wall top of fixed block 81, and the opposite side of backup pad 82 runs through the inner chamber that second spout 18 extends into seal box 14 and inlays in the inner chamber of first spout 12, backup pad 82 slidable cup joints at the outer wall top of gag lever post 13, first connecting block 83 sets up in the bottom middle part of backup pad 82, and first connecting block 83 cup joints in the outer wall middle part of normally opening movable contact 16, first connecting block 83 and backup pad 82 cooperation can carry on spacingly to normally opening movable contact 16.

Preferably, the distance from the iron block 9 to the iron core 3 is the same as the distance from the right end of the normally open movable contact 16 to the left end of the normally open stationary contact 11, so that the normally open movable contact 16 can be contacted with the normally open stationary contact 11 when the iron block 9 is contacted with the iron core 3.

Preferably, the first sliding groove 12 is dovetail-shaped, and the supporting plate 82 is adapted to be inserted into the inner cavity of the first sliding groove 12, so that the supporting plate 82 can slide in the inner cavity of the first sliding groove 12 more stably.

Preferably, the lengths of the storage slot 17 and the telescopic slot 62 are larger than the distance between the iron block 9 and the iron core 3, so that the iron block 9 and the iron core 3 can be smoothly contacted.

The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.

When the circuit switching device is used, the conducting wires are respectively connected to the coil terminal 5, the normally closed fixed contact 10, the normally open fixed contact 16, the normally closed movable contact 15 and the normally open movable contact 16, the coil 4 is electrified through the conducting wires, the iron core 3 generates magnetism due to the electromagnetic effect, the insulating block 7 is driven by the magnetic attraction iron block 9 to move downwards, the supporting plate 82 is enabled to slide downwards along the inner cavity of the first sliding groove 12 and the outer wall of the limiting rod 13, the normally open movable contact 16 moves downwards, the normally closed movable contact 15 moves downwards to be separated from the normally closed fixed contact 10, the supporting rod 61 moves towards the inner cavity of the storage groove 17 at the moment, the telescopic rod 64 moves towards the inner cavity of the telescopic groove 62 and extrudes the spring 65 to generate elastic deformation until the normally open movable contact 16 is contacted with the normally open fixed contact 11 to complete the circuit switching, when the circuit needs to be changed, the coil terminal 5 is powered off, the magnetism of the iron core 3 disappears, the, meanwhile, the insulation block 7 drives the normally open movable contact 16, the normally closed movable contact 15 and the limiting mechanism 8 to move upwards, the normally open movable contact 16 is disconnected with the normally open fixed contact 15, the normally closed movable contact 15 is connected with the normally closed fixed contact 10, the telescopic rod 64 slowly moves out of the inner cavity of the telescopic groove 62 under the action of the rubber pad 63 at the moment, the supporting rod 61 slowly moves out of the inner cavity of the storage groove 17, the slow movement can reduce the generation of electric arcs, the contact fusing is prevented until the initial state is restored, the device can limit the normally open movable contact 16, the situation that the normally open movable contact 16 is staggered after frequent swinging is prevented, the generation of the electric arcs can be reduced, and the contacts can be prevented from being dissolved and fused.

In the description of the present invention, it is to be understood that the terms "right side", "bottom end", "middle part", "upper", "both ends", "one end", "both sides", "other end", "top part", "left side", "lower", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation; also, unless expressly stated or limited otherwise, the terms "snap," "set," "insert," "nest," and the like are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A highly reliable high current relay, comprising:

the box body (1), wherein a first sliding chute (12) is formed in the top of the right side of the inner wall of the box body (1) from top to bottom;

the coil box (2), the coil box (2) is arranged at the bottom end of the inner wall of the box body (1);

the iron core (3) is arranged in the middle of the bottom end of the coil box (2), and the top end of the iron core (3) extends out of the inner cavity of the coil box (2);

the coil (4), the coil (4) is wound on the outer wall of the iron core (3) from top to bottom;

the coil terminals (5) are arranged, the number of the coil terminals (5) is two, the two coil terminals (5) are respectively arranged at two ends of the coil (4), and the two coil terminals (5) penetrate through the bottom end of the box body (1);

the number of the lifting mechanisms (6) is two, and one end of each of the two lifting mechanisms (6) is arranged on the left side and the right side of the top end of the coil box (2) respectively;

the left side and the right side of the bottom end of the insulating block (7) are respectively provided with a storage groove (17), the storage grooves (17) are sleeved on the outer wall of the lifting mechanism (6), and the top end of the inner wall of each storage groove (17) is fixedly connected with the other end of the lifting mechanism (6);

the iron block (9), the iron block (9) is arranged in the middle of the bottom end of the insulating block (7), and the position of the iron block (9) corresponds to the position of the iron core (3);

the limiting mechanism (8), the limiting mechanism (8) is arranged at the top end of the insulating block (7);

the two ends of the limiting rod (13) are respectively arranged at the upper end and the lower end of the inner cavity of the first sliding chute (12);

the sealing box (14) is arranged at the top of the right side of the inner wall of the box body (1), the position of the sealing box (14) corresponds to that of the first sliding chute (12), and a second sliding chute (18) is formed in the left side of the sealing box (14) from top to bottom;

the middle part of the outer wall of the normally open movable contact (16) is embedded in the limiting mechanism (8), the left end of the normally open movable contact (16) extends out of the top end of the box body (1), and the right end of the normally open movable contact (16) penetrates through the second sliding groove (18) and extends into the inner cavity of the sealing box (14);

the normally open static contact (11), the normally open static contact (11) is arranged at the top of the right side of the box body (1), the left end of the normally open static contact (11) extends into the inner cavity of the seal box (14), and the normally open static contact (11) is arranged below the first sliding groove (12);

the normally closed static contact (10), the normally closed static contact (10) is arranged at the top of the left side wall of the box body (1), and the right end of the normally closed static contact (10) extends into the inner cavity of the box body (1);

the second connecting block (19) is arranged at the top of the left side of the insulating block (7);

the normally closed movable contact (15), the middle part of the outer wall of the normally closed movable contact (15) is fixedly embedded in the inner cavity of the second connecting block (19), the bottom end of the normally closed movable contact (15) is in contact with the right end of the normally closed stationary contact (10), and the top end of the normally closed movable contact (15) penetrates through the upper surface of the box body (1).

2. A high current relay with high reliability according to claim 1, wherein: the lifting mechanism (6) comprises:

one end of the support rod (61) is arranged on the outer side of the top end of the coil box (2), the other end of the support rod (61) is embedded in the inner cavity of the storage groove (17), and the top end of the support rod (61) is provided with a telescopic groove (62) from top to bottom;

the rubber pad (63), the rubber pad (63) is arranged on the inner wall of the telescopic groove (62);

one end of the telescopic rod (64) is fixedly arranged at the top end of the inner wall of the storage groove (17), and the other end of the telescopic rod (64) is fixedly connected to the top end of the inner cavity of the telescopic groove (62);

the spring (65), the outer wall in telescopic link (64) is cup jointed in spring (65), just the both ends of spring (65) joint respectively in the top of the inner wall of storage tank (17) and the top of bracing piece (61).

3. A high current relay with high reliability according to claim 1, wherein: the limiting mechanism (8) comprises:

the fixed block (81) is arranged at the top end of the insulating block (7), and the fixed block (81) is sleeved in the middle of the outer wall of the normally-open movable contact (16);

one side of the supporting plate (82) is arranged at the top of the right side wall of the fixing block (81), the other side of the supporting plate (82) penetrates through the second sliding groove (18) and extends into the inner cavity of the seal box (14) to be embedded into the inner cavity of the first sliding groove (12), and the supporting plate (82) is slidably sleeved at the top of the outer wall of the limiting rod (13);

the normally open movable contact device comprises a first connecting block (83), wherein the first connecting block (83) is arranged in the middle of the bottom end of a supporting plate (82), and the first connecting block (83) is sleeved in the middle of the outer wall of the normally open movable contact (16).

4. A high current relay with high reliability according to claim 1, wherein: the distance from the iron block (9) to the iron core (3) is the same as the distance from the right end of the normally open movable contact (16) to the left end of the normally open fixed contact (11).

5. A high current relay with high reliability according to claim 3, wherein: the first sliding groove (12) is in a dovetail shape, and the supporting plate (82) is matched and inserted into an inner cavity of the first sliding groove (12).

6. A high current relay with high reliability according to claim 1 or 2, wherein: the lengths of the storage groove (17) and the telescopic groove (62) are both greater than the distance between the iron block (9) and the iron core (3).

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