CN110729153A - Elastic piece reset anti-rotation relay - Google Patents

Abstract

The invention relates to the technical field of relays, and in particular discloses a shrapnel reset and anti-rotation relay, comprising an insulating shell, an electromagnet and two static terminals arranged on the insulating shell, a push rod assembly movably cooperating with the electromagnet, and a push rod assembly device. There is a moving point block; the push rod assembly also includes a rod body, an armature and a first shrapnel, the first shrapnel is V-shaped, and the first shrapnel has a first arm portion and a second arm portion arranged in a cross, the first arm portion and the second arm portion. The first shrapnel is used to replace the spring used to drive the push rod assembly to reset in the prior art, and the first shrapnel can provide a suitable reset elastic force for the moving point block within a small space distance, reducing the push rod The height of the components, thereby reducing the height of the entire relay, makes the relay meet the miniaturization specification requirements. The first shrapnel is arranged on the insulating shell to prevent poor conduction caused by the rotation of the point block in conjunction with the rod body, and to ensure the stability of the relay's performance.

Description

A shrapnel reset anti-rotation relay

technical field

The invention relates to the technical field of relays, and particularly discloses a shrapnel reset and anti-rotation relay.

Background technique

Relays are automatic switches commonly used in various circuit controls. The structures of relays are various. In the prior art, relays are often equipped with a movable push rod unit and a spring that pushes the push rod unit to reset. Due to the defects of the spring itself, the spring It is no longer possible to provide the reset elastic force for the push rod unit in a small space distance. In this way, it is necessary to configure a larger space distance for the spring, which causes the increase of the height of the push rod unit and the height of the entire relay. As a result, the relay cannot meet the miniaturized specification requirements. In addition, since the spring has no limiting effect on the push rod unit, the push rod unit often cannot achieve normal conduction due to rotation, resulting in poor use of the relay.

SUMMARY OF THE INVENTION

In order to overcome the shortcomings and deficiencies existing in the prior art, the purpose of the present invention is to provide an anti-rotation relay for shrapnel reset. Provide appropriate reset elastic force for the moving point block within a small space distance, so that the relay meets the miniaturization specification requirements; the first shrapnel prevents poor conduction caused by the rotation of the moving point block with the rod body, and ensures the stability of the relay performance. .

In order to achieve the above purpose, a shrapnel reset anti-rotation relay of the present invention includes an insulating shell, an electromagnet and two static terminals arranged on the insulating shell, a push rod assembly movably cooperated with the electromagnet, and the push rod assembly is provided with a moving rod. The point block, the electromagnet is used to drive the push rod assembly to move, and the moving point block is used to conduct the two static terminals; the push rod assembly also includes a rod body, an armature and a first shrapnel, and the armature, the moving point block and the first shrapnel are all arranged in In the rod body, the first elastic piece has a first arm portion and a second arm portion which are arranged crosswise, and the first arm portion and the second arm portion are both arranged in the insulating shell.

Preferably, the first elastic piece is of one-piece structure, the first elastic piece further includes a base piece, the first arm part and the second arm part are respectively arranged on both ends of the base piece, the base piece is arranged on the rod body, and the moving point block is located in the base piece. Between the substrate and the armature, the arm portion is extended in the direction away from the substrate and away from the moving point block, and the distance between the first arm portion and the second arm portion close to one end of the substrate is smaller than that of the first arm portion and the second arm portion. The distance between one end of the two arm parts away from the substrate, and the end of the arm part away from the substrate is arranged in the insulating shell.

Preferably, the push rod assembly further includes a second elastic piece, the moving point block is slidably arranged on the rod body, and the second elastic piece includes a third arm portion and a fourth arm portion that are arranged crosswise, and the third arm portion and the fourth arm portion are respectively Acting on the rod body and the moving point block, the second elastic sheet is used to drive the moving point block to reset, and the first elastic sheet and the second elastic sheet are respectively located on both sides of the moving point block.

Preferably, the rod body is provided with a stop portion located between the armature and the moving point block, the free end of the third arm portion and the free end of the fourth arm portion are provided with perforations, and the rod body is accommodated in the perforations, and the movable The side of the point block and the blocking portion which are close to each other respectively blocks and interferes with the third arm portion and the fourth arm portion.

Preferably, the push rod assembly includes an insulator slidably disposed on the outside of the rod body, the moving point block is disposed on the insulator, the insulator is provided with two first clamping ribs, the free end of the third arm portion or the free end of the fourth arm portion. It is clamped between the two first clamping ribs.

Preferably, the insulating case is provided with a plurality of second locking ribs, and the free end of the first arm portion and the free end of the second arm portion are clamped between two adjacent second locking ribs.

Preferably, the electromagnet includes a yoke shell, an insulating skeleton and an iron core arranged in the yoke shell, an electromagnetic coil wound on the outside of the insulating skeleton, and a magnet coil located in the insulating skeleton, and the insulating shell is arranged on the yoke. The shell, the insulating frame is provided with a through hole passing through the insulating frame, the iron core is located in one end of the through hole, the rod body and the iron core are slidably arranged, the armature is slidably accommodated in the through hole, the magnet coil is located in the through hole, the magnet coil and the electromagnetic coil are located in the through hole. All are arranged around the armature, and the direction of the magnetic field of the magnet coil is the same or opposite to the direction of the magnetic field generated after the electromagnetic coil is energized.

Preferably, the yoke iron shell includes a yoke iron plate and a yoke iron piece connected to the yoke iron plate, the insulating frame and the insulating shell are respectively located on both sides of the yoke iron plate, the iron core is arranged on the yoke iron plate, and the yoke iron plate is arranged on the yoke iron plate. There is a yoke iron barrel extending into the through hole, the armature and the iron core are all located in the yoke iron barrel, and the magnet ring is sleeved on the outside of the yoke iron barrel.

Preferably, the insulating frame is provided with a stop ring protruding into the through hole, the yoke is provided with a positioning cylinder protruding into the other end of the through hole, and the magnet ring is clamped between the stop ring and the positioning cylinder. between.

Preferably, it also includes an insulating cover covering the insulating shell and the outside of the electromagnet, the insulating cover is exposed at one end of the static terminal, the insulating skeleton is provided with a protruding part that penetrates the yoke shell, and the protruding part is provided with a conductive and parallel connection with the electromagnetic coil. The power supply terminal of the insulating cover is exposed. The insulating shell is provided with a blind slot for accommodating it. The yoke iron shell covers the opening of the blind slot. groove.

The beneficial effects of the present invention are as follows: the first elastic piece is used to replace the spring used to drive the push rod assembly to reset in the prior art. The height of the relay reduces the height of the entire relay, so that the relay meets the miniaturization specification requirements. The first shrapnel is arranged on the insulating shell to prevent poor conduction caused by the rotation of the point block in conjunction with the rod body, and to ensure the stability of the relay's performance.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is the exploded structure schematic diagram of the present invention;

3 is a schematic three-dimensional structure diagram of the push rod assembly of the present invention;

Fig. 4 is the exploded structure schematic diagram of the push rod assembly of the present invention;

5 is a schematic diagram of an exploded structure of an electromagnet and a push rod assembly of the present invention;

FIG. 6 is a schematic three-dimensional structure diagram of the insulating skeleton of the present invention.

Reference numerals include:

1—Insulating shell 2—Electromagnet 3—Static terminal

4—moving point block 5—rod body 6—armature

7—First shrapnel 8—First arm 9—Second arm

11—Base sheet 12—Second elastic sheet 13—Third arm

14—fourth arm part 15—stopper part 16—insulator

17—The first rib 18—The second rib 19—The third rib

21—yoke iron shell 22—insulation skeleton 23—iron core

24—Electromagnetic coil 25—Magnet coil 26—Through hole

27—yoke iron plate 28—yoke iron piece 29—yoke iron cylinder

31—stop ring 32—positioning cylinder 33—insulation cover

34—Accommodating blind slots.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the embodiments and the accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

Please refer to FIG. 1 to FIG. 6 , a shrapnel reset anti-rotation relay of the present invention includes an insulating shell 1 , an electromagnet 2 installed on the insulating shell 1 , and two static terminals 3 , which are movable with the electromagnet 2 . The matched push rod assembly and push rod assembly are provided with a moving point block 4, the electromagnet 2 is used to drive the push rod assembly to move, the moving point block 4 is used to conduct the two static terminals 3, and the moving point block 4 is made of conductive metal , the moving point block 4 is roughly a rectangular plate.

The push rod assembly also includes a rod body 5, an armature 6 and a first elastic piece 7. The rod body 5 is roughly a straight cylinder. The armature 6, the moving point block 4 and the first elastic piece 7 are all installed on the rod body 5. The armature 6, the first elastic piece 7 are all installed on the rod body 5. The elastic pieces 7 are respectively installed on the left and right ends of the rod body 5, the moving point block 4 is located between the armature 6 and the first elastic piece 7, the first elastic piece 7 is roughly V-shaped, and the first elastic piece 7 has a first arm portion 8 and The second arm portion 9 , the first arm portion 8 and the second arm portion 9 are substantially rectangular flat plates, and the free end of the first arm portion 8 and the free end of the second arm portion 9 are both disposed on the insulating shell 1 .

The first elastic sheet 7 is used to replace the spring used to drive the push rod assembly to reset in the prior art. The first elastic sheet 7 can provide a suitable reset elastic force for the moving point block 4 within a small space distance, and reduce the height of the push rod assembly. In turn, the height of the entire relay is reduced, so that the relay meets the miniaturized specification requirements. The arm portion of the first elastic piece 7 is installed on the insulating shell 1, and the insulating shell 1 is used to limit the first elastic piece 7 to prevent the poor conduction caused by the rotation of the rod body 5 and the driving point block 4, so as to ensure the stability of the relay performance. .

The first elastic piece 7 has a one-piece structure. The first elastic piece 7 is punched and bent from a metal material. The first elastic piece 7 also includes a base plate 11. The first arm portion 8 and the second arm portion 9 are respectively arranged on the At the left and right ends of the substrate 11, the substrate 11 is installed and fixed on the rod body 5, the moving point block 4 is located between the substrate 11 and the armature 6, and the arm portion is directed away from the substrate 11 and away from the moving point block 4. Extending arrangement, the distance between one end of the first arm portion 8 and the second arm portion 9 close to the substrate 11 is smaller than the distance between one end of the first arm portion 8 and the second arm portion 9 away from the substrate 11, and the arm portion is far away from the substrate One end of 11 is arranged on the insulating case 1 .

After the electromagnet 2 is energized, a magnetic force is generated, which attracts the armature 6 so that the armature 6 drives the rod body 5 to move, and the moving rod body 5 moves together with the driving point block 4 , so that the moving point block 4 conducts the two static terminals 3 . During the movement of the rod body 5, the rod body 5 squeezes the first elastic piece 7 so that the first elastic piece 7 is elastically deformed and has elastic potential energy. When the electromagnet 2 loses power, the electromagnet 2 loses its magnetic force, and the first elastic piece 7 in itself Under the action of elastic restoring force, the push rod assembly is driven to return to its original position.

The push rod assembly further includes a second elastic piece 12 , the moving point block 4 is slidably arranged on the rod body 5 , the rod body 5 penetrates the moving point block 4 , the second elastic piece 12 is roughly V-shaped, and the second elastic piece 12 includes a third cross-arranged. The arm portion 13 , the fourth arm portion 14 , the third arm portion 13 and the fourth arm portion 14 act on the rod body 5 and the moving point block 4 respectively. The second elastic piece 12 is used to drive the moving point block 4 to reset, and the first elastic piece 7. The second elastic pieces 12 are located on the left and right sides of the moving point block 4 respectively. The second elastic piece 12 is also of one-piece structure. The second elastic piece 12 is punched and bent from a metal material. One end of the third arm portion 13 is directly connected to one end of the fourth arm portion 14 .

When the magnetic force of the electromagnet 2 drives the armature 6 so that the moving point block 4 conducts the two static terminals 3 , the moving point block 4 slides relative to the rod body 5 , and the moving point block 4 sliding relative to the rod body 5 squeezes the second elastic piece 12 . The second elastic piece 12 is elastically deformed and has elastic potential energy. The elastic restoring force of the second elastic piece 12 drives the moving point block 4 to firmly press against the static terminal 3 to prevent the relay from being vibrated and causing the moving point block 4 to separate from the static terminal 3 . When the magnetic force of the electromagnet 2 disappears, the second elastic piece 12 drives the moving point block 4 to return to its original position under the action of the elastic force.

The second elastic sheet 12 is used to replace the spring used to drive the moving point block 4 to return in the prior art. Compared with the spring for driving the moving point block 4 to return in the prior art, the second elastic sheet 12 can be used in a small space distance. The moving point block 4 provides a suitable reset elastic force to further reduce the height of the push rod assembly, thereby assisting in reducing the height of the entire relay, so that the relay meets the miniaturization specification requirements.

The rod body 5 is provided with a stopper 15 located between the armature 6 and the moving point block 4 , the stopper 15 is arranged around the central axis of the rod body 5 , the free end of the third arm The free ends are provided with perforations, the perforations penetrate through the third arm part 13 and the fourth arm part 14, the rod body 5 is accommodated in the perforations, and the moving point block 4 and the side of the stop part 15 which are close to each other respectively stop and interfere with the third arm part 14. On the arm portion 13 and on the fourth arm portion 14 .

During the assembly process of the second elastic piece 12 and the rod body 5, there is no need for the third arm portion 13 to be fixedly connected to the rod body 5, and the fourth arm portion 14 is also not required to be fixedly connected to the rod body 5 (or the moving point block 4). The disassembly and assembly efficiency between the elastic piece 12 and the rod body 5 .

The push rod assembly includes an insulator 16 slidably arranged on the outside of the rod body 5, the insulator 16 is made of insulating plastic, and the moving point block 4 is installed on the insulator 16. Preferably, the moving point block 4 and the insulator 16 are embedded and molded together. , to ensure that the insulator 16 and the moving point block 4 are firmly connected together, so as to avoid the relative movement between the moving point block 4 and the insulator 16 to affect the performance of the relay. The insulator 16 is provided with two first locking ribs 17, the two first locking ribs 17 are spaced apart from each other and are arranged in parallel, and the free end of the third arm portion 13 or the free end of the fourth arm portion 14 is clamped on the two first locking ribs 17. between the rib 17. The two first locking ribs 17 are used to block and limit the third arm portion 13 or the fourth arm portion 14 , thereby preventing the second elastic piece 12 from rotating relative to the rod body 5 .

The insulating shell 1 is provided with a plurality of second locking ribs 18 , and the free end of the first arm portion 8 and the free end of the second arm portion 9 are clamped between two adjacent second locking ribs 18 . In this embodiment, the number of the second locking ribs 18 is four, the free end of the first arm portion 8 is clamped between the two second locking ribs 18 , and the free end of the second arm portion 9 is clamped between the other two between the second locking ribs 18 . The first arm portion 8 and the second arm portion 9 are blocked and limited by the adjacent two second locking ribs 18 to prevent the first elastic piece 7 from rotating relative to the insulating shell 1 , thereby preventing the rod body 5 from rotating relative to the insulating shell 1 .

The insulator 16 is provided with two third ribs 19 , the first rib 17 and the third rib 19 are respectively located on two sides of the insulator 16 away from each other, the substrate 11 is clamped between the two third ribs 19 , The limiting substrate 11 is blocked by the two third locking ribs 19 , so as to ensure that the insulator 16 does not rotate relative to the rod body 5 .

The electromagnet 2 includes a yoke shell 21, an insulating skeleton 22 and an iron core 23 installed in the yoke shell 21, an electromagnetic coil 24 wound on the outside of the insulating skeleton 22, and a magnet coil 25 located in the insulating skeleton 22, The insulating shell 1 is arranged on the outer side of the yoke shell 21, the insulating skeleton 22 is provided with a through hole 26 passing through the insulating skeleton 22, the iron core 23 is located in one end of the through hole 26, the rod body 5 and the iron core 23 are slidably arranged, and the rod body 5 is away from the first. One end of an elastic piece 7 penetrates the iron core 23 , the armature 6 and the stopper 15 are located on the left and right sides of the iron core 23 respectively, the armature 6 is slidably accommodated in the through hole 26 , the magnet ring 25 is located in the through hole 26 , and the magnet ring 25 It is made of permanent magnet, the magnet coil 25 is roughly annular, the magnet coil 25 and the electromagnetic coil 24 are arranged around the armature 6, and the magnetic field direction of the magnet coil 25 is the same or opposite to that generated by the electromagnetic coil 24 after electrification.

During the use of the relay, a forward current is passed to the electromagnetic coil 24, and the magnetic field of the magnetic coil 25 is superimposed with the magnetic field generated after the electromagnetic coil 24 is energized, so as to improve the suction ability of the coil, so that the iron core 23 has a large magnetic force to drive the armature 6. Moving, compared with the use of the electromagnetic coil 24 alone, the power of the electromagnetic coil 24 is reduced, and the electromagnetic coil 24 is prevented from being burned out due to high-power heating; the low-power electromagnetic coil 24 reduces the volume of the coil, so that the volume of the electromagnet 2 is reduced, and then Reduce the size of the entire relay, so that the relay meets the requirements of miniaturization specifications. A reverse current is applied to the electromagnetic coil 24, the magnetic field of the magnet coil 25 and the magnetic field generated after the electromagnetic coil 24 is energized are cancelled, and the first shrapnel 7 can easily drive the push rod assembly to reset, so as to avoid the magnetic interference of the magnet coil 25 to the normal operation of the push rod assembly reset.

The yoke iron shell 21 includes a yoke iron plate 27 and a yoke iron piece 28 connected with the yoke iron plate 27. The yoke iron plate 27 is substantially a rectangular flat plate, and the yoke iron piece 28 is U-shaped. On the left and right sides of the yoke iron plate 27, the iron core 23 is installed on the yoke iron plate 27, and the yoke iron plate 27 is provided with a yoke iron cylinder 29 extending into the through hole 26. The yoke iron cylinder 29 is roughly a hollow cylinder. 6. The iron cores 23 are all located in the yoke barrel 29 , and the magnet ring 25 is sleeved on the outside of the yoke barrel 29 . The position of the magnet ring 25 is limited by the yoke barrel 29 , so as to prevent the magnet ring 25 from moving in the radial direction of the through hole 26 and causing poor use.

The insulating frame 22 is provided with a stop ring 31 protruding into the through hole 26 . The positioning cylinder 32 in the other end is substantially hollow cylindrical. The positioning cylinder 32 is sleeved on the outer side of the yoke cylinder 29 , and the magnet ring 25 is clamped between the stop ring 31 and the positioning cylinder 32 . The cooperation between the positioning cylinder 32 and the stop ring 31 is used to prevent the magnet ring 25 from moving in the axial direction of the through hole 26 and to avoid the position change of the magnet ring 25 resulting in poor use.

It also includes an insulating cover 33 covering the outside of the insulating shell 1 and the electromagnet 2. The insulating cover 33 is made of insulating plastic. One end of the static terminal 3 exposes the insulating cover 33. The protruding part is provided with a power supply terminal which is connected to the electromagnetic coil 24 and exposes the insulating cover 33 , and the external power supply supplies power to the electromagnetic coil 24 through the power supply terminal.

The insulating shell 1 is made of ceramic material. The insulating shell 1 is provided with an accommodating blind slot 34. The yoke iron shell 21 is used to cover the opening of the accommodating blind slot 34. The first elastic piece 7, the moving point block 4, the second elastic piece 12. The other end of the static terminal 3 is located in the accommodating blind slot 34, and the insulating shell 1 is used to protect the first elastic piece 7, the moving point block 4, the second elastic piece 12, and the static terminal 3, so as to prevent external objects from interfering with the push rod assembly and the static terminal. normal use of terminal 3.

The above contents are only preferred embodiments of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific embodiments and application scope. limits.

Claims (10)

1. A spring piece reset anti-rotation relay comprises an insulating shell, an electromagnet and two static terminals, a push rod assembly and a moving point block, wherein the electromagnet and the two static terminals are arranged on the insulating shell; the method is characterized in that: the push rod assembly further comprises a rod body, an armature and a first elastic piece, the armature, the moving point block and the first elastic piece are all arranged on the rod body, the first elastic piece is provided with a first arm portion and a second arm portion which are arranged in a crossed mode, and the first arm portion and the second arm portion are all arranged on the insulating shell.

2. The spring plate reset anti-rotation relay according to claim 1, characterized in that: the first elastic piece is of an integrated structure, the first elastic piece further comprises a substrate, a first arm and a second arm are arranged at two ends of the substrate respectively, the substrate is arranged on the rod body, the moving point block is located between the substrate and the armature, the arm extends towards the direction far away from the substrate and the direction far away from the moving point block, the distance between the ends, close to the substrate, of the first arm and the second arm is smaller than the distance between the ends, far away from the substrate, of the first arm and the second arm, and one end, far away from the substrate, of the arm is arranged on the insulating shell.

3. The spring plate reset anti-rotation relay according to claim 1, characterized in that: the push rod assembly further comprises a second elastic sheet, the moving point block is arranged on the rod body in a sliding mode, the second elastic sheet comprises a third arm and a fourth arm which are arranged in a crossed mode, the third arm and the fourth arm act on the rod body and the moving point block respectively, the second elastic sheet is used for driving the moving point block to reset, and the first elastic sheet and the second elastic sheet are located on two sides of the moving point block respectively.

4. The spring plate reset anti-rotation relay according to claim 3, characterized in that: the rod body is provided with a stop part positioned between the armature and the moving point block, the free end of the third arm part and the free end of the fourth arm part are both provided with through holes, the rod body is accommodated in the through holes, and one side of the moving point block, which is close to the stop part, is respectively stopped and abutted against the third arm part and the fourth arm part.

5. The spring plate reset anti-rotation relay according to claim 3, characterized in that: the push rod assembly comprises an insulator which is arranged on the outer side of the rod body in a sliding mode, the moving point block is arranged on the insulator, the insulator is provided with two first clamping ribs, and the free end of the third arm portion or the free end of the fourth arm portion is clamped between the two first clamping ribs.

6. The spring plate reset anti-rotation relay according to claim 1, characterized in that: the insulating shell is provided with a plurality of second clamping ribs, and the free end of the first arm part and the free end of the second arm part are clamped between two adjacent second clamping ribs.

7. The spring plate reset anti-rotation relay according to claim 1, characterized in that: the electro-magnet includes the yoke iron shell, set up insulating skeleton and iron core in the yoke iron shell, around locating the solenoid in the insulating skeleton outside, be located the magnet circle of insulating skeleton, the insulating shell sets up in the yoke iron shell, insulating skeleton is equipped with the through-hole that runs through insulating skeleton, the iron core is located the one end of through-hole, the body of rod slides with the iron core and sets up, armature slides and holds and establishes in the through-hole, the magnet circle is located the through-hole, magnet circle, solenoid all encircle the armature setting, the magnetic field direction that produces after the magnetic field direction of magnet circle and solenoid circular telegram syntropy or reverse.

8. The spring plate reset anti-rotation relay according to claim 7, characterized in that: the yoke iron shell comprises a yoke iron plate and a yoke iron piece connected with the yoke iron plate, the insulating framework and the insulating shell are respectively positioned on two sides of the yoke iron plate, the iron core is arranged on the yoke iron plate, the yoke iron plate is provided with a yoke iron cylinder extending into the through hole, the armature iron and the iron core are both positioned in the yoke iron cylinder, and the magnet ring is sleeved on the outer side of the yoke iron cylinder.

9. The spring plate reset anti-rotation relay according to claim 8, characterized in that: the insulating framework is provided with a stop ring protruding into the through hole, the yoke piece is provided with a positioning barrel protruding into the other end of the through hole, and the magnet ring is clamped between the stop ring and the positioning barrel.

10. The spring plate reset anti-rotation relay according to claim 7, characterized in that: still including the insulating boot in the insulating casing and the electro-magnet outside of cladding, the insulating boot appears out at the one end of quiet terminal, and insulating skeleton is equipped with the protruding portion that runs through the yoke iron shell, and the protruding portion is equipped with and switches on and show the power supply terminal of insulating boot with solenoid, and the insulating casing is equipped with the blind groove of holding, and the yoke iron shell covers the opening in the blind groove of holding, and the other end of first shell fragment, movable point piece, second shell fragment, quiet terminal all is located the blind groove of holding.

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