阅读说明：本技术 一种大功率继电器 (High-power relay ) 是由 陈志忠 董满 于 2021-07-23 设计创作，主要内容包括：本发明公开了一种大功率继电器,所述继电器包括用于安装元件的壳体,所述壳体由底壳和顶壳可拆卸连接组成,所述底壳的底面嵌装有复合导热板,所述复合导热板依次由硬质层、导热层、柔性绝缘层、导热层、柔性绝缘层、导热层、硬质层组成,所述顶壳的顶面开设有散热窗,所述散热窗内设有防尘网。该继电器底壳上设有特制的复合导热板,配合顶壳上开设的散热窗,使继电器能保证较高的强度,同时具有优异的散热性能,有助于增加继电器的使用寿命以及使用安全性。(The invention discloses a high-power relay which comprises a shell for mounting elements, wherein the shell is formed by detachably connecting a bottom shell and a top shell, a composite heat-conducting plate is embedded in the bottom surface of the bottom shell, the composite heat-conducting plate sequentially comprises a hard layer, a heat-conducting layer, a flexible insulating layer, a heat-conducting layer and a hard layer, a heat-radiating window is arranged on the top surface of the top shell, and a dustproof net is arranged in the heat-radiating window. The special composite heat conducting plate is arranged on the bottom shell of the relay and matched with the heat radiating window arranged on the top shell, so that the relay can ensure higher strength, has excellent heat radiating performance and is beneficial to prolonging the service life and the use safety of the relay.)

1. The utility model provides a high-power relay, the relay is including casing (1) that is used for installing the component, its characterized in that, casing (1) can be dismantled with top shell (102) by drain pan (101) and is connected the constitution, the bottom surface of drain pan (101) is inlayed and is equipped with compound heat-conducting plate (103), compound heat-conducting plate (103) comprise stereoplasm layer, heat-conducting layer, flexible insulation layer, heat-conducting layer, stereoplasm layer in proper order, heat dissipation window (104) have been seted up to the top surface of top shell (102), be equipped with the dust screen in heat dissipation window (104).

2. A high power relay according to claim 1, wherein said hard layer is made of hard resin material, said heat conducting layer is made of TCOR fluidized rubber material, and said flexible insulating layer is made of fiberglass material.

3. The high-power relay according to claim 1, wherein a motor (2), a speed reducing transmission member (3), a static spring copper member (4) and a movable spring copper member (5), the arc plate (6) and an accelerating transmission member (7) are arranged in the bottom shell (101), the motor (2) is in transmission connection with the movable spring copper member (5) through the speed reducing transmission member (3), and the motor (2) is in transmission connection with the arc isolating plate (6) through the accelerating transmission member (7).

4. A high-power relay according to claim 3, characterized in that when the motor (2) rotates, on one hand, the deceleration transmission member (3) drives the movable spring copper member (5) to contact or separate from the static spring copper member (4), and on the other hand, the acceleration transmission member (7) drives the arc-isolating plate (6) to move so as to enable the movable spring copper member (5) and the static spring copper member (4) to be free from or blocked.

5. The high-power relay according to claim 4, wherein a sliding rod (8) is arranged in the bottom case (1) between the movable spring copper member (5) and the static spring copper member (4), the arc barrier (6) is movably arranged on the sliding rod (8), a through hole (601) corresponding to the movable spring copper member (5) is formed in the arc barrier (6), and the accelerating transmission member (7) is used for driving the arc barrier (6) to move along the sliding rod (8), so that the position of the through hole (601) or the position of the non-through hole (601) in the arc barrier (6) is located on a connection line between the movable spring copper member (5) and the static spring copper member (4).

6. A high-power relay according to claim 5, characterized in that the moving range of the arc-isolating plate (6) is limited by the two ends of the sliding rod (8), when the arc-isolating plate (6) moves to the limited position of one end, the through hole (601) on the arc-isolating plate (6) is positioned on the line connecting the movable spring copper member (5) and the static spring copper member (4), and when the arc-isolating plate (6) moves to the limited position of the other end, the non-through hole (601) on the arc-isolating plate (6) is positioned on the line connecting the movable spring copper member (5) and the static spring copper member (4).

7. A high power relay according to claim 6, characterized in that at least one coaxial double gear (701) in the accelerating drive (7) has the following structure: comprises a wheel shaft (7011), a bearing (7012), a bull gear (7013) and a pinion gear (7014), the bull gear (7013) and the pinion gear (7014) are movably mounted on the wheel shaft (7011) through bearings (7012) respectively, the side surface of the bull gear (7013) opposite to the pinion gear (7014) is provided with a series of connected pits (7015) along the same circumferential line, the side surface of the pinion gear (7014) corresponding to the bull gear (7013) is vertically provided with a plurality of elastically telescopic convex columns (7016), each convex column (7016) is inserted into a concave pit (7015) corresponding to the convex column, when the large gear (7013) rotates without being blocked, the small gear (7014) rotates to drive the large gear (7013) to rotate through the convex column (7016), when the bull gear (7013) is blocked from rotating, the pinion (7014) rotates, and all the convex columns (7016) slide along different concave pits (7015) on a rotating path.

8. The high power relay according to claim 7, wherein the top end of the protruding column (7016) and the concave pit (7015) are both hemispherical.

9. The high-power relay according to claim 7, wherein the gear wheel (7013) is provided with a plurality of column grooves, springs are arranged in the column grooves, and the convex columns (7016) are inserted into the column grooves and are supported and connected through the springs.

10. The high-power relay according to claim 5, wherein the accelerating transmission member (7) comprises at least one coaxial double-layer gear (701), the arc isolating plate (6) is provided with a toothed plate (602), the at least one coaxial double-layer gear (701) is in transmission connection with the output end of the motor (2) and the toothed plate (602) in an accelerating connection mode, and the arc isolating plate (6) is made to move back and forth along the sliding rod (8) through the forward and reverse rotation of the motor (2).

Technical Field

The invention relates to the technical field of relays, in particular to a high-power relay.

Background

At present, relays are widely applied to IDC (Internet Data Center) machine room power distribution systems, power systems or mobile telecommunication communication fields, rail transit fields, security systems and other fields. In a traditional mechanical relay, an arc extinguishing device is not arranged in the relay, so that electric sparks are generated when a contact switch of the relay is closed/opened, the size of the electric sparks is increased along with the size of current, and particularly in a direct current control system, the electric sparks are more serious. The generation of large sparks can cause: ablation of contacts, generation of electromagnetic interference, increased losses, reduced over-charge, etc. Therefore, how to effectively and accurately reduce arc discharge or surge current in the design and use of the relay is very important for the relay, particularly for a high-voltage direct-current relay, when a high-voltage and high-current direct-current load is put into and cut off, the arc is large, and special measures are required to be adopted for arc extinction of the high-voltage and high-current direct-current relay, particularly for a high-power relay.

Chinese patent documents CN209962967U and CN207398032U disclose relays with arc extinguishing function, and the arc extinguishing structures adopted in the two patents have a common point, that is, the arc extinguishing structures achieve synchronous action through the reciprocating movement of the movable spring copper piece, when the movable spring copper piece is separated from the stationary spring copper piece, the arc-isolating plate is driven by the movable spring copper piece to be inserted between the movable spring copper piece and the stationary spring copper piece. This transmission is also a common technical solution currently used in the field, and it has one drawback: the moving spring copper part is driven by the motor and the reduction gear, the moving speed is relatively slow, the arc isolation plate correspondingly causes slow action, the arc isolation plate is completely in place after the moving spring copper part is completely separated, the gap is small at the earlier stage of separation of the moving spring copper part, electric arcs can also occur (the probability is higher), and the arc isolation plate is not in place at the moment and cannot play an effective arc extinguishing role. Therefore, when the relay is opened or closed, it is necessary to increase the action rate of the arc-isolating plate.

In addition, because the power of the relay assembly is large, the traditional high-power relay emits a large amount of heat in the use process, the relay is easily overloaded and cannot be normally used, and if the heat is not timely dissipated, the element aging is easily caused, and even safety accidents such as short circuit and the like are caused.

Disclosure of Invention

The invention aims to provide a high-power relay, which solves the problems of poor arc extinguishing effect and poor heat dissipation efficiency of the conventional high-power relay.

The invention realizes the purpose through the following technical scheme:

the utility model provides a high-power relay, the relay is including the casing that is used for installing the component, the casing can be dismantled with the top shell by the drain pan and connect and constitute, the bottom surface of drain pan is inlayed and is equipped with compound heat-conducting plate, compound heat-conducting plate comprises stereoplasm layer, heat-conducting layer, flexible insulation layer, heat-conducting layer, stereoplasm layer in proper order, the heat dissipation window has been seted up to the top surface of top shell, be equipped with the dust screen in the heat dissipation window.

The further improvement is that the hard layer is made of hard resin material, the heat conduction layer is made of TCOR fluidized rubber material, and the flexible insulation layer is made of glass fiber material.

The improved structure of the motor is characterized in that a motor, a speed reduction transmission part, a static spring copper part and a movable spring copper part, an arc plate and an acceleration transmission part are arranged in the bottom shell, the motor is in transmission connection with the movable spring copper part through the speed reduction transmission part, meanwhile, the motor is in transmission connection with the arc isolation plate through the acceleration transmission part, when the motor rotates, on one hand, the movable spring copper part is driven to be in contact with or separated from the static spring copper part through the speed reduction transmission part, and on the other hand, the arc isolation plate is driven to move through the acceleration transmission part so that no isolation or isolation exists between the movable spring copper part and the static spring copper part.

The improved structure is characterized in that a sliding rod is arranged between the movable spring copper piece and the static spring copper piece in the bottom shell, the flash barrier is movably arranged on the sliding rod, a through hole corresponding to the movable spring copper piece is formed in the flash barrier, and the accelerating transmission piece is used for driving the flash barrier to move along the sliding rod, so that the through hole position or the non-through hole position on the flash barrier is located on a connecting line of the movable spring copper piece and the static spring copper piece.

The further improvement lies in that the moving range of the flash barrier is limited by the two ends of the slide rod, when the flash barrier moves to the limit position of one end, the through hole position on the flash barrier is on the line of the movable spring copper piece and the static spring copper piece, when the flash barrier moves to the limit position of the other end, the non-through hole position on the flash barrier is on the line of the movable spring copper piece and the static spring copper piece.

In a further improvement, at least one coaxial double-layer gear in the acceleration transmission member has the following structure: the wheel comprises a wheel shaft, a bearing, a large gear and a small gear, wherein the large gear and the small gear are movably arranged on the wheel shaft through the bearing respectively, pits which are connected in series are distributed on the side face of the large gear relative to the small gear along the same circumferential line, a plurality of elastic telescopic convex columns are vertically arranged on the side face of the small gear relative to the large gear, each convex column is inserted into the corresponding pit, when the large gear rotates without being blocked, the small gear rotates to drive the large gear to rotate through the convex columns, and when the large gear rotates with being blocked, the small gear rotates to enable all the convex columns to slide along different pits on a rotating path.

The further improvement is that the top end of the convex column and the concave pit are both in a hemispherical shape.

The improved structure is characterized in that the gear wheel is provided with a plurality of column grooves, springs are arranged in the column grooves, and the convex columns are inserted into the column grooves and are in supporting connection through the springs.

The further improvement lies in that the accelerating transmission part comprises at least one coaxial double-layer gear, the arc separation plate is provided with a toothed plate, the at least one coaxial double-layer gear adopts an accelerating connection mode to connect the output end of the motor and the toothed plate in a transmission mode, and the arc separation plate can move back and forth along the sliding rod through the positive and negative rotation of the motor.

The invention has the beneficial effects that:

(1) the bottom shell of the relay is provided with a specially-made composite heat conducting plate which is matched with a heat radiating window arranged on the top shell, so that the relay can ensure higher strength, has excellent heat radiating performance and is beneficial to prolonging the service life and the use safety of the relay;

(2) this relay has changed the inherent transmission mode of flash barrier, introduces the driving medium with higher speed, cooperates existing speed reduction driving medium, can form the speed difference under the unified drive for the action speed of flash barrier is obviously faster than the relay action speed that opens and shuts, and in the very short time after opening the floodgate like this, can let the flash barrier remove to take one's place, and the arc extinguishing effect obtains showing the promotion.

Drawings

FIG. 1 is a schematic structural diagram of a relay housing;

FIG. 2 is a cross-sectional view of the composite heat-conducting plate;

FIG. 3 is a schematic structural diagram of the relay when opening;

FIG. 4 is a schematic structural diagram of a relay during closing;

FIG. 5 is a schematic view of the accelerating drive;

FIG. 6 is a schematic structural view of an arc barrier;

FIG. 7 is a schematic structural view of a coaxial double-layer gear;

FIG. 8 is a schematic structural diagram of a bull gear in a coaxial double-layer gear;

in the figure: 1. a housing; 101. a bottom case; 102. a top shell; 103. compounding a heat conducting plate; 2. a motor; 3. a reduction drive member; 4. a stationary spring copper member; 5. a movable spring copper piece; 6. an arc barrier; 601. a through hole; 602. a toothed plate; 603. a transverse groove; 7. an accelerating transmission member; 701. a coaxial double-layer gear; 7011. a wheel axle; 7012. a bearing; 7013. a bull gear; 7014. a pinion gear; 7015. a pit; 7016. a convex column; 702. a single-layer gear; 8. a slide bar; 9. and a guide shaft.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

As shown in fig. 1 and 2, the relay for high power comprises a housing 1 for mounting components, the housing 1 is formed by detachably connecting a bottom shell 101 and a top shell 102, a composite heat conducting plate 103 is embedded in the bottom surface of the bottom shell 101, and the composite heat conducting plate 103 is sequentially formed by a hard layer, a heat conducting layer, a flexible insulating layer, a heat conducting layer and a hard layer, wherein the hard layer is made of hard resin material, the heat conducting layer is made of TCOR fluidized rubber material, and the flexible insulating layer is made of glass fiber material. In addition, a heat dissipation window 104 is disposed on the top surface of the top case 102, and a dust screen is disposed in the heat dissipation window 104. The whole housing 1 can ensure high strength and excellent heat dissipation performance, and is helpful for prolonging the service life of the relay.

Referring to fig. 3 to 8 again, a motor 2 is arranged in the bottom case 101, a decelerating transmission member 3, a stationary spring copper member 4 and a moving spring copper member 5, an arc plate 6 and an accelerating transmission member 7, the motor 2 is in transmission connection with the moving spring copper member 5 through the decelerating transmission member 3, and meanwhile, the motor 2 is in transmission connection with the arc isolating plate 6 through the accelerating transmission member 7, when the motor 2 rotates, on one hand, the moving spring copper member 5 is driven to contact or separate from the stationary spring copper member 4 through the decelerating transmission member 3, and on the other hand, the arc isolating plate 6 is driven to move through the accelerating transmission member 7 so that no separation or a separation is formed between the moving spring copper member 5 and the stationary spring copper member 4.

Specifically, the motor 2 can rotate bidirectionally under control, when the motor 2 rotates in one direction, the movable spring copper part 5 is driven to be in contact with the static spring copper part 4 through the speed reduction transmission part 3, and meanwhile, the flash barrier 6 is driven to move through the acceleration transmission part 7 so as to enable the movable spring copper part 5 and the static spring copper part 4 not to be separated, so that a condition is provided for contact, and closing is realized; when motor 2 rotated towards another direction, driven movable spring copper spare 5 and quiet spring copper spare 4 separation through speed reduction driving medium 3, driven flash barrier 6 through transmission medium 7 with higher speed and removed so that by the separation between movable spring copper spare 5 and the quiet spring copper spare 4 at the same time, played the arc extinguishing effect, realized the switching-off. And because the decelerating transmission piece 3 and the accelerating transmission piece 7 are driven by the same motor 2, a speed difference can be formed at the power output end, the action of opening and closing the brake and the action of the arc isolating plate 6 are started simultaneously, but the action of the arc isolating plate 6 is obviously faster than the action of opening and closing the brake, so that when the brake is opened and a small gap is formed between the just moving spring copper piece 5 and the static spring copper piece 4, the arc isolating plate 6 can be in place to complete the arc extinguishing work, and the moving spring copper piece 5 can still move at the moment until the opening action is completely completed.

In the invention, the arc isolation plate 6 can adopt a traditional installation structure, namely, the arc isolation plate is rotatably installed on the side edge of the static spring copper part 4 through a vertical shaft, a driven gear is installed on the vertical shaft, the output end of the acceleration transmission part 7 is meshed and connected with the driven gear, the acceleration transmission part 7 drives the vertical shaft to rotate towards different directions, and the arc isolation plate 6 is inserted into the space between the movable spring copper part 5 and the static spring copper part 4 to form isolation, or leaves the space between the movable spring copper part 5 and the static spring copper part 4 without isolation.

In addition, the invention provides an improved arc isolating plate 6 mounting structure, which has better stability and specifically comprises the following components: increase the length and the width of flash barrier 6, and be equipped with slide bar 8 in casing 1 between movable spring copper spare 5 and quiet spring copper spare 4, slide bar 8 is two-bar structure, flash barrier 6 activity is established on slide bar 8, and set up the through-hole 601 corresponding with movable spring copper spare 5 on the flash barrier 6, the contact that the size of through-hole 601 satisfied movable spring copper spare 5 just passes, driving medium 7 is used for driving flash barrier 6 and removes along slide bar 8 with higher speed, make on flash barrier 6 through-hole 601 position or non-through-hole 601 position be in on the line of movable spring copper spare 5 and quiet spring copper spare 4.

In the present invention, the length of the arc barrier 6 is increased, and the displacement amount is large for accelerating movement, so that the housing 1 needs a large volume, and a reciprocating movement space of the arc barrier 6 is ensured.

In some use environments, the size of the relay cannot be increased, so that the moving range of the flash barrier 6 is limited by the two ends of the sliding rod 8, and the relay can be set as follows: when the flash barrier 6 moves to the limit position of one end part, the through hole 601 position on the flash barrier 6 is positioned on the connecting line of the movable spring copper part 5 and the static spring copper part 4, so that the non-blocking is realized; when the flash barrier 6 moves to the limiting position of the other end, the non-through hole 601 position on the flash barrier 6 is positioned on the connecting line of the movable spring copper piece 5 and the static spring copper piece 4, so that blocking is realized.

In order to avoid the phenomenon of drive jamming when the arc isolating plate 6 is limited to move, in the invention, at least one coaxial double-layer gear 701 in the accelerating drive member 7 has the following structure: the device comprises a wheel shaft 7011, a bearing 7012, a bull gear 7013 and a pinion gear 7014, wherein the bull gear 7013 and the pinion gear 7014 are movably mounted on the wheel shaft 7011 through the bearing 7012 respectively, the side surface of the bull gear 7013 opposite to the pinion gear 7014 is provided with a series of connected pits 7015 along the same circumferential line, the side surface of the pinion gear 7014 opposite to the bull gear 7013 is vertically provided with a plurality of elastically telescopic convex columns 7016, each convex column 7016 is inserted into the corresponding pit 7015, when the bull gear 7013 is not blocked in rotation, the pinion gear 7014 rotates, the convex columns 7016 are inserted into the fixed pits 7015 and do not contract, the bull gear 7013 is driven to rotate by the convex columns 7016, when the bull gear 7013 is blocked in rotation (the arc isolating plate 6 reaches an end limiting position), the pinion gear 7014 rotates, the convex columns 7016 overcome the elasticity of the expansion and contraction, all the convex columns 7016 slide along different pits 7015 on a rotation path, and the bull gear 7013 does not influence the continuous rotation of the pinion gear 7014, the corresponding higher transmission can be continuously carried out, namely, the output end of the motor 2 is ensured to continuously rotate to drive the movable spring copper piece 5 to complete the switching action.

Preferably, the top end of the protruding pillar 7016 and the concave 7015 are both hemispherical, so that the protruding pillar 7016 can slide along the concave 7015 against the elasticity of the expansion and contraction. A plurality of column grooves are formed in the large gear 7013, springs are arranged in the column grooves, and the convex columns 7016 are inserted into the column grooves and are supported and connected through the springs.

In the present invention, the acceleration transmission member 7 comprises at least one coaxial double-layer gear 701, such as the structure shown in fig. 5, the acceleration transmission member 7 comprising two coaxial double-layer gears 701 and one single-layer gear 702 meshing in sequence. Of course, it is also possible to use only one coaxial double gear 701 for the acceleration transmission member 7, or more coaxial double gears 701, just taking care to maintain the final correct transmission direction. Correspondingly, a toothed plate 602 is arranged on the arc isolating plate 6, at least one coaxial double-layer gear 701 drives a large gear by a small gear in the coaxial double-layer gear 701, and the adjacent large gear of the upper coaxial double-layer gear 701 drives the small gear of the lower coaxial double-layer gear 701 or drives a single-layer gear 702 to drivingly connect the output end of the motor 2 and the toothed plate 602, so that the arc isolating plate 6 reciprocates along the slide rod 8 through the forward and reverse rotation of the motor 2.

In the invention, a guide shaft 9 for moving and guiding the movable spring copper piece 5 is arranged in the shell 1, the guide shaft 9 penetrates through the flash barrier 6, and a transverse groove 603 for relative movement of the guide shaft 9 is formed in the flash barrier 6. When the flash barrier 6 reciprocates, the guide shaft 9 is stationary, so the transverse groove 603 is needed to provide space to avoid the guide shaft 9 blocking the flash barrier 6 from moving. It should also be noted that the acceleration transmission member 7 is located below the movable spring copper member 5, and is prevented from interfering with each other.

In the invention, the output end of the motor 2 is designed to be a worm structure, and the motor 2 is meshed with the speed reducing transmission part 3 and the accelerating transmission part 7 through the worm structure, so that the driving is unified, the structure is simplified, and the control is convenient.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.