CN218333619U

CN218333619U - Low temperature rise relay

Info

Publication number: CN218333619U
Application number: CN202221497659.9U
Authority: CN
Inventors: 任世刚; 唐俊平; 刘大义; 彭鹏; 侯湘勇
Original assignee: Mingguang Sanyou Power Technology Co ltd
Current assignee: Mingguang Sanyou Power Technology Co ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2023-01-17
Anticipated expiration: 2032-06-15

Abstract

The utility model provides a low temperature rise relay, which comprises a bottom shell, a static point contact piece and a low temperature rise contact piece, wherein the bottom shell is provided with the static point contact piece; the movable reed is rotatably installed on the bottom shell, a movable point contact piece matched with the fixed point contact piece is arranged at the free end of the movable reed, and the movable point contact piece can abut against or separate from the fixed point contact piece along with the rotation of the movable reed; and one end of the shunt piece is electrically connected to the moving point contact piece, and the other end of the shunt piece is electrically connected to the external conducting wire. The utility model discloses the reposition of redundant personnel piece that sets up is used for intercommunication outside conductor wire and moving point contact, avoids using the movable contact spring water conservancy diversion to can be according to the space with the area of overflowing maximize of reposition of redundant personnel piece, thereby can effectively reduce the temperature rise of relay, the security is high.

Description

Low temperature rise relay

Technical Field

The utility model relates to a relay technical field especially relates to a low temperature rise relay.

Background

Relays are used in the power distribution industry where long-term current carrying is required. When the power supply is used, current is input through the terminal pin and then is conducted to the output terminal through the movable reed. Due to the structural design, the movable spring plate not only conducts current, but also needs to deform to generate electric shock pressure, so that the movable spring plate is required to have better mechanical property (elastic deformation), and the cross sectional area of the movable spring plate cannot be too large. Due to the limitation of materials and cross sectional area, the temperature rise of the movable spring plate is large in the current conducting process, so that the relay has certain potential safety hazard.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a low temperature rise relay, it avoids using the movable contact spring water conservancy diversion, has effectively reduced the temperature rise of relay.

The embodiment of the utility model discloses a realize through following technical scheme:

a low temperature rise relay comprising: a bottom shell configured with a dead point contact piece; the movable reed is rotatably installed on the bottom shell, a movable point contact piece matched with the fixed point contact piece is arranged at the free end of the movable reed, and the movable point contact piece can abut against or separate from the fixed point contact piece along with the rotation of the movable reed; and one end of the shunt piece is electrically connected to the moving point contact piece, and the other end of the shunt piece is electrically connected to an external conducting wire.

According to a preferred embodiment, a shunt piece is arranged on the movable spring, and the shunt piece is electrically connected to the movable point contact piece and the shunt piece respectively.

According to a preferred embodiment, the low temperature rise relay further comprises: the coil assembly is arranged on the bottom shell and provided with two oppositely arranged magnetic poles; and an armature assembly rotatably disposed relative to the coil assembly between the two poles, the movable spring being fixedly connected to the armature assembly, wherein: the coil assembly can drive the armature assembly to rotate forwards or backwards, so that the moving point contact piece can abut against or be separated from the static point contact piece.

According to a preferred embodiment, the coil assembly comprises a fixing frame, and a shaft hole is arranged on the fixing frame; the armature component comprises a fixed sleeve, a permanent magnet is embedded in the fixed sleeve, the upper side and the lower side of the permanent magnet are respectively provided with a magnetic conductive sheet, and the end part of the magnetic conductive sheet extends out of the fixed sleeve; a shaft boss is arranged on the fixing sleeve and rotatably arranged in the shaft hole; the movable spring is fixedly installed on the fixed sleeve.

According to a preferred embodiment, the outer wall of the fixing sleeve is provided with an extending bulge, and the movable spring is fixedly arranged on the extending bulge.

According to a preferred embodiment, the inner cavity of the bottom shell is provided with a magnetic area and two wire areas, and the two wire areas are symmetrically arranged around the magnetic area; the coil assembly is mounted to the magnetic region.

According to a preferred embodiment, conductive connection plates are arranged in the conductor areas, which are electrically connected to the external conductor wires and the shunt members, respectively.

According to a preferred embodiment, the inner wall of the wire guiding area is provided with a clamping groove; the conductive connecting plate comprises a body, and the body is respectively provided with an inserting part and a connecting part; the inserting portion is clamped in the clamping groove, one end of the connecting portion is electrically connected to the shunt piece, and the other end of the connecting portion is electrically connected to the external conducting wire.

According to a preferred embodiment, a plurality of first locking projections are arranged on both sides of the plug-in part, wedge-shaped surfaces are arranged on the first locking projections, and the small ends of the first locking pieces are arranged toward the free end of the plug-in part.

According to a preferred embodiment, a deflector is arranged on the bottom shell, and the dead point contact piece is fixedly connected to the deflector.

The utility model discloses technical scheme has following advantage and beneficial effect at least:

the utility model provides a reposition of redundant personnel piece is used for communicateing outside conductor wire and moving point contact, avoids using the movable contact spring water conservancy diversion to can be according to the area of overflowing maximize of space with the reposition of redundant personnel piece, thereby can effectively reduce the temperature rise of relay, the security is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

Fig. 1 is a schematic perspective view of a low temperature rise relay according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an explosion structure of a low temperature rise relay according to an embodiment of the present invention;

fig. 3 is a schematic view of a three-dimensional structure of the low temperature rise relay provided by the embodiment of the present invention after the top cover is removed;

fig. 4 is a schematic top view of the low temperature rise relay provided by the embodiment of the present invention after the top cover is removed;

FIG. 5 is a schematic cross-sectional view of section C-C of FIG. 4;

FIG. 6 is a schematic cross-sectional view of section D-D of FIG. 4;

fig. 7 is a schematic top view of the bottom case according to the embodiment of the present invention;

FIG. 8 is an enlarged partial schematic view of the structure at A in FIG. 2;

fig. 9 is a partially enlarged schematic view of the structure at B in fig. 2.

An icon: 11-top shell, 111-snap groove, 12-bottom shell, 121-snap protrusion, 122-dead point contact piece, 123-guide piece, 124-magnetic region, 125-wire region, 1251-snap groove, 126-fixed groove, 1261-first stopper, 1262-second locking protrusion, 1263-second stopper, 2-armature component, 21-fixed sleeve, 211-axix, 212-extending protrusion, 22-magnetic conductive piece, 23-permanent magnet, 3-movable reed, 31-movable point contact piece, 32-shunt piece, 4-shunt piece, 5-external conductive wire, 51-conductive connecting plate, 511-body, 512-plug part, 5121-first locking protrusion, 513-connecting part, 6-coil component, 61-coil body, 62-magnetic yoke, 621-magnetic pole, 63-fixing frame, 631-shaft hole.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 to 9, a low temperature rise relay includes a top case 11 and a bottom case 12, which are fastened to each other, and a dead point contact 122, a moving point contact 31, a moving spring 3, an external conductive wire 5, and a shunt 4, wherein: the upper surface of the bottom shell 12 is provided with a fixing groove 126, a deflector 123 is clamped in the fixing groove 126, and the fixed point contact piece 122 is fixedly installed on the deflector 123 and electrically connected with the same. The baffles 123 extend out of the bottom case 12 for externally connecting wires. The outer wall of the top case 11 is configured with a fastening groove 111, the outer wall of the bottom case 12 is configured with a fastening protrusion 121 adapted to the fastening groove 111, and when the top case 11 is fastened to the bottom case 12, the fastening protrusion 121 is fastened to the fastening groove 111.

The movable spring 3 is rotatably mounted on the bottom case 12, the free end of the movable spring 3 is provided with a movable point contact piece 31 adapted to the fixed point contact piece 122, and the fixed point contact piece 122 can abut against or separate from the fixed point contact piece 122 along with the rotation of the movable spring 3. The movable contact spring 3 here serves to carry the movable contact 31. In this embodiment, the movable spring plate 3 is a thin plate made of metal, such as spring steel. When using, in order to let movable point contact 31 and quiet point contact 122 fully laminate, prevent the phenomenon of contact failure to appear between the two, the external force that requires to apply for movable reed 3 can make movable reed 3 rotate and movable reed 3 can appear the elastic bending after movable point contact 31 and quiet point contact 122 butt, thereby make the face of movable point contact 31 and quiet point contact 122 butt separately tend to be parallel, and then make movable point contact 31 and quiet point contact 122's area of contact as far as possible and closely laminate between the two, can prevent to appear contact failure between movable point contact 31 and the quiet point contact 122.

In this embodiment, the movable point contact 31 penetrates the movable reed 3, the tail of the movable point contact 31 extends to the back side of the movable reed 3, a splitter 32 is fixedly mounted on the back side of the movable reed 3, and the splitter 32 is in current connection with the tail of the movable point contact 31. The shunt piece 32 is used to connect with the moving point contact piece 31 and conduct current, so that a material with low resistance is selected as much as possible when in use. Preferably, the diverter blade 32 is made of copper.

In this embodiment, the shunt 4 is used to connect the external conductive wire 5 to the contact point 31. Specifically, the external conductive wire 5 extends into the bottom case 12 and is electrically connected to the shunt 4, and the other end of the shunt 4 is electrically connected to the shunt chip 32. When the movable point contact 31 and the static point contact 122 are abutted in use, the external conductive wire 5, the shunt member 4, the shunt piece 32, the movable point contact 31, the static point contact 122 and the flow deflector 123 form a flow guiding passage. In this embodiment, the overcurrent area of reposition of redundant personnel 4 and reposition of redundant personnel piece 32 can be according to space maximize to all select for use low resistance material to make, thereby can effectively reduce the temperature rise of relay, the security is high.

Preferably, the shunt 4 may be a copper wire. In other embodiments, the shunt 4 may also be a copper sheet. The purpose is to conduct the external conducting wire 5 and the movable contact 31 by using a low-resistance material, and replace the scheme of conducting the movable contact 3 in the traditional relay.

Further, as shown in fig. 4, 5 and 7, the inner cavity of the bottom shell 12 is configured with a magnetic area 124 and two wire areas 125, and the two wire areas 125 are symmetrically arranged with respect to the magnetic area 124; inside the wire area 125, conductive connection plates 51 are arranged, the conductive connection plates 51 being electrically connected to the external conductive wires 5 and the shunt 4, respectively. In this embodiment, in order to facilitate the installation of the conductive connecting plate 51, the inner wall of the wire area 125 is provided with the clip groove 1251, and when in use, the conductive connecting plate 51 is inserted into the clip groove 1251.

As shown in fig. 2 and 8, the conductive connecting plate 51 includes a body 511, and the body 511 is provided with a plug 512 and a connecting part 513. Specifically, during use, the plug portion 512 is clipped in the clip groove 1251, and one end of the connecting portion 513 is electrically connected to the shunt member 4, and the other end is electrically connected to the external conductive wire 5.

Further, as shown in fig. 8, a plurality of first locking protrusions 5121 are disposed on two sides of the insertion part 512, a wedge-shaped surface is disposed on the first locking protrusions 5121, and a small end of the first locking block is disposed toward a free end of the insertion part 512. The first locking block can reduce the contact area between the plug-in part 512 and the inner wall of the clamping groove 1251, so that the plug-in part is convenient to disassemble; meanwhile, the wedge-shaped surface structure facilitates a user to insert the plug part 512 into the card slot 1251. In this embodiment, the bottom case 12 is made of plastic, and the large end of the first locking protrusion 5121 can apply force to the inner wall of the clip groove 1251 after being inserted into the clip groove 1251 to deform the inner wall to a certain extent, so that the insertion portion 512 and the clip groove 1251 are assembled more firmly, the conductive connecting plate 51 can be effectively prevented from falling off from the clip groove 1251 in the using process, and the safety is high.

In this embodiment, as shown in fig. 2 and 9, a first stopper 1261 and a second stopper 1263 are disposed at an upper edge of the fixing groove 126 to vertically limit the deflector 123 engaged with the fixing groove 126. Further, a plurality of second locking protrusions 1262 are formed on the side wall of the fixing groove 126 in an extending manner along the insertion direction of the flow deflector 123. Here, the joint surface between the second locking protrusion 1262 and the deflector 123 is arc-shaped. The second locking protrusion 1262 reduces the contact area between the guide vane 123 and the inner wall of the fixing groove 126, and the installation of the guide vane 123 is convenient due to the arc structure design of the second locking protrusion 1262. In this embodiment, the bottom case 12 is made of a plastic material, and the deflector 123 is mounted on the fixing groove 126 and then applies a force to the second locking protrusion 1262 to deform the deflector to a certain extent, so that the deflector 123 and the fixing groove 126 are assembled more firmly, the deflector 123 can be effectively prevented from falling off from the fixing groove 126 in the using process, and the safety is high.

The low temperature rise relay that this embodiment provided is electromagnetic relay, and movable contact spring 3's rotation is through electromagnetic structure control. Specifically, the low temperature rise relay further comprises: a coil assembly 6 and an armature assembly 2, in this embodiment, the coil assembly 6 is mounted to the magnetic region 124. As shown in fig. 4, 5 and 6, the coil assembly 6 includes a coil body 61 and a yoke 62, the yoke 62 has two opposite magnetic poles 621, and the coil body 61 is installed between the two magnetic poles 621. The armature assembly 2 is rotatably disposed relative to the coil assembly 6 between the two poles 621, and the movable spring 3 is fixedly connected to the armature assembly 2, wherein: the coil assembly 6 can drive the armature assembly 2 to rotate forward or backward, so that the moving point contact piece 31 can abut against or disengage from the static point contact piece 122. Specifically, the yoke 62 is provided with a fixing bracket 63, and the fixing bracket 63 is provided with a shaft hole 631; the armature component 2 comprises a fixed sleeve 21, a permanent magnet 23 is embedded in the fixed sleeve 21, the upper side and the lower side of the permanent magnet 23 are respectively provided with a magnetic conductive sheet 22, and the end part of the magnetic conductive sheet 22 extends out of the fixed sleeve 21; the fixed sleeve 21 is provided with a shaft convex 211, and the shaft convex 211 is rotatably arranged in the shaft hole 631; the movable spring piece 3 is fixedly mounted to the fixed sleeve 21. The magnetic conductive sheet 22 in this embodiment is connected to a permanent magnet 23.

In this embodiment, the armature assembly 2 is an i-shaped armature structure shown in fig. 2 and 6, and when in use, the permanent magnet 23 magnetizes the magnetic conductive plates 22, so that the two magnetic conductive plates 22 have opposite polarities;

when the coil assembly 6 is electrified with a forward current, the armature assembly 2 can rotate towards one direction, two magnetic contact surfaces at opposite corners in the armature assembly 2 are contacted with two magnetic poles 621 of the magnetic yoke 62, and the contact state of the armature assembly 2 and the magnetic yoke 62 is maintained by the permanent magnet 23;

when the coil assembly 6 is supplied with a reverse current, the armature assembly 2 can rotate in a reverse direction due to the change of the polarity of the yoke 62, and the other diagonal magnetic contact surface of the armature assembly 2 is brought into contact with the two magnetic poles 621 of the yoke 62, and the contact state of the armature assembly 2 and the yoke 62 is maintained by the permanent magnet 23.

In this embodiment, the outer wall of the fixing sleeve 21 is provided with an extending protrusion 212 for fixedly mounting the movable spring 3. When in use. The armature component 2 is rotated by passing forward or reverse current to the coil component 6, so that the movable contact piece 3 fixedly mounted on the fixed sleeve 21, namely the extension protrusion 212, is rotated, and the movable contact piece 31 can be controlled to abut against or separate from the static contact piece 122.

In other embodiments, boss 211 may be rotatably mounted to a sidewall of magnetic region 124.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by combining the above technical features at will. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. A low temperature rise relay, comprising:

a bottom case (12) provided with a dead point contact (122);

the movable spring piece (3) is rotatably mounted on the bottom shell (12), a movable point contact piece (31) matched with the static point contact piece (122) is arranged at the free end of the movable spring piece (3), and the movable point contact piece (31) can abut against or separate from the static point contact piece (122) along with the rotation of the movable spring piece (3); and

and a shunt (4) having one end electrically connected to the moving point contact (31) and the other end electrically connected to the external conductive wire (5).

2. A low temperature rise relay according to claim 1, wherein a splitter (32) is arranged on the movable spring (3), and the splitter (32) is electrically connected to the movable contact (31) and the splitter (4), respectively.

3. A cryo-relay according to claim 1 or 2, further comprising:

a coil assembly (6) mounted to the bottom case (12) and having two oppositely disposed magnetic poles (621); and

an armature assembly (2) rotatably disposed relative to the coil assembly (6) between two poles (621), the movable spring (3) being fixedly connected to the armature assembly (2), wherein:

the coil assembly (6) can drive the armature assembly (2) to rotate forwards or backwards, so that the movable point contact piece (31) can be abutted against or separated from the static point contact piece (122).

4. The low temperature rise relay according to claim 3, wherein the coil assembly (6) comprises a fixing frame (63), and a shaft hole (631) is configured on the fixing frame (63);

the armature assembly (2) comprises a fixed sleeve (21), a permanent magnet (23) is embedded in the fixed sleeve (21), magnetic conductive sheets (22) are arranged on the upper side and the lower side of the permanent magnet (23), and the end parts of the magnetic conductive sheets (22) extend out of the fixed sleeve (21);

the fixed sleeve (21) is provided with a shaft boss (211), and the shaft boss (211) is rotatably arranged in the shaft hole (631);

the movable spring plate (3) is fixedly installed on the fixed sleeve (21).

5. A low temperature rise relay according to claim 4, characterized in that the outer wall of the fixing sleeve (21) is provided with an extension protrusion (212), and the movable spring plate (3) is fixedly mounted on the extension protrusion (212).

6. A low temperature rise relay according to claim 3, wherein the inner cavity of the bottom shell (12) is configured with a magnetic region (124) and two lead regions (125), the two lead regions (125) being symmetrically arranged with respect to the magnetic region (124);

the coil assembly (6) is mounted to the magnetic region (124).

7. The cryo-relay according to claim 6, wherein a conductive connection plate (51) is arranged in said wire area (125), said conductive connection plate (51) being electrically connected to said external conductive wires (5) and said shunt member (4), respectively.

8. The cryo-relay according to claim 7, wherein said inner wall of said wire section (125) is provided with snap-in grooves (1251);

the conductive connecting plate (51) comprises a body (511), and the body (511) is respectively provided with an inserting part (512) and a connecting part (513);

the plug-in part (512) is clamped in the clamping groove (1251), one end of the connecting part (513) is electrically connected to the shunt part (4), and the other end of the connecting part is electrically connected to the external conducting wire (5).

9. A low temperature rise relay according to claim 8, wherein a plurality of first locking projections (5121) are arranged on both sides of the plug part (512), a wedge surface is arranged on the first locking projections (5121), and the small end of the first locking block is arranged towards the free end of the plug part (512).

10. A low temperature rise relay according to claim 1, wherein a deflector (123) is arranged on the bottom case (12), and the stationary contact (122) is fixedly connected to the deflector (123).