Electromagnet with quick response function

Abstract

The utility model discloses an electromagnet with a quick response function, which comprises a shell with a hollow cavity, a bearing bin is arranged on the inner wall of the shell, a coil is arranged in the bearing bin, and at least part of an electrified wire positioned on the coil extends out of the shell; a static iron core is arranged in the shell; a movable iron core which moves relative to the static iron core is arranged on one side of the static iron core; one end of the balance air pipe is located on the end face, close to the movable iron core, of the static iron core, and the other end of the balance air pipe is connected with an external air source. The electromagnet has the main beneficial effects that when the movable iron core moves back to the static iron core, the resistance of the movable iron core can be eliminated by injecting gas into the balance gas pipe, the reaction speed of the electromagnet is increased, and the working efficiency of the electromagnet is greatly improved. In addition, when the movable iron core moves towards the static iron core, the resistance of the movable iron core can be increased by injecting gas into the balance gas pipe, the moving speed of the movable iron core is reduced, collision with the static iron core is avoided, noise is completely eradicated, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electromagnet, specifically, especially, a kind of electromagnet with quick response function. BACKGROUND

[0002] In the field of switch electric appliance, in the automatic switch electric appliance of contact, sensing part is mostly electromagnet structure, generally by dynamic static core, coil and spring composition.Its working principle is: input current or voltage signal in the coil two ends, the excitation current of coil produces magnetic field, magnetic induction intensity has greater value in ferromagnetic medium, its magnetic flux mostly along dynamic static core, magnetic yoke and working air gap closure, the end surface between dynamic static core produces the electromagnetic attraction that makes working air gap reduce, when electromagnetic attraction value is greater than spring resistance, dynamic core starts to static core movement, dynamic core movement drives actuator to realize the opening and closing of switch electric appliance.

[0003] Such as patent number CN113161102A discloses a switch electric appliance's electromagnet structure, including yoke, front end cover, static core, dynamic core, spring, electromagnetic coil and rear end cover;Yoke is cylindrical cylinder structure, front end cover and rear end cover are respectively fixed on the two sides of yoke;Static core is installed in the inside of yoke, and is fixedly connected with front end cover;Rear end cover is provided with guide hole, dynamic core passes through the guide hole of rear end cover, and dynamic core can slide in the inside of yoke;The both ends of spring are fixedly connected with static core and dynamic core;Electromagnetic coil is sleeved in the sliding region of dynamic core and the outside of static core, and is located in the inside of yoke, front end cover and rear end cover. However, in the structure, in the process that dynamic core moves away from static core, under the influence of external resistance, its response speed is slow, cannot satisfy the requirement of efficient response.In addition, after work is completed, when dynamic core moves towards static core, collision will occur, influence its service life, have great limitation. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the insufficient of prior art, provide a kind of electromagnet with quick response function.

[0005] The utility model aims at overcoming the insufficient of prior art, provide a kind of electromagnet with quick response function.

[0006] The utility model discloses an electromagnet with quick reaction function, including the casing with hollow chamber, is equipped with the bearing bin on the inner wall of casing, and the coil is built -in in bearing bin, and the energized wire on coil at least partial extension is placed in the outside of casing, and the static core is built -in in casing, and the outer circumferential surface of static core is completely close -fitted with the inner wall of bearing bin, and one side of static core is equipped with the moving core that moves relative to it, and the outer circumferential surface of moving core is close -fitted with the inner wall of casing, and a balance gas pipe is seted up on static core, and one end of balance gas pipe is located on the end face of static core and moving core close, and the other end is connected with outside gas source.

[0007] Preferably, the casing is also quickly connected with a junction box, the junction box is built-in with a circuit board, and the circuit board is electrically connected with the energized wire.

[0008] Preferably, the end side of the static core close to the moving core is fixedly provided with a magnetic isolation gasket.

[0009] Preferably, the end of the moving core away from the static core is provided with a weight-reducing groove.

[0010] Preferably, the moving core is sleeved with a shaft sleeve, and the shaft sleeve is fixedly arranged on the casing.

[0011] Preferably, the casing comprises a left casing and a right casing, the end side of the left casing is provided with a stepped protrusion, and the right casing is provided with a groove matched with the left casing.

[0012] Preferably, a sealing ring is further arranged between the left casing and the right casing, and the sealing ring is arranged in the groove.

[0013] The beneficial effects of the utility model mainly reflect in:

[0014] 1. The layout is reasonable, the structure is compact, when the moving core moves away from the static core, the resistance of the moving core can be eliminated by injecting gas into the balance gas pipe, the reaction speed of the electromagnet is increased, and the working efficiency of the electromagnet is greatly improved. In addition, when the moving core moves towards the static core, the resistance of the moving core can be increased by injecting gas into the balance gas pipe, the moving speed of the moving core is slowed down, collision with the static core is avoided, noise is prevented, and the service life is prolonged.

[0015] 2. The moving and static cores are separated by the magnetic isolation gasket, a certain gap is maintained, the influence of the residual magnetic force on the release time is avoided, the size of the residual magnetic force of different materials does not need to be considered, the material does not need to be heat treated to eliminate the residual magnetic force, the cost can be greatly reduced, the reaction time is improved, and the applicability is wide. BRIEF DESCRIPTION OF DRAWINGS

[0016] The technical scheme of the utility model will be further described in combination with the drawings:

[0017] Fig. 1 : perspective view of the preferred embodiment of the present application;

[0018] Fig. 2 : sectional view of the preferred embodiment of the present application. DETAILED DESCRIPTION

[0019] The present application will be described in detail below with reference to the specific embodiments shown in the drawings. However, these embodiments are not limited to the present application, and the structural, method, or functional changes made by those skilled in the art based on these embodiments are included in the protection scope of the present application.

[0020] In the description of the present application, it should be noted that unless explicitly specified and limited, the terms "mounting", "connection", and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] The present application will be described in detail below with reference to the specific embodiments shown in the drawings.

[0022] As Figs. 1-2 shown, the present application discloses a kind of electromagnet with quick response function, including the shell 1 with hollow cavity, the inner wall of the shell 1 is equipped with bearing bin 2, coil 3 is built-in in the bearing bin 2, at least part of the energized wire on the coil 3 is extended to the outside of the shell 1;Static core 4 is built-in in the shell 1, the outer circumferential surface of the static core 4 is completely close to the inner wall of the bearing bin 2;One side of the static core 4 is equipped with moving core 5 relative to it, the outer circumferential surface of the moving core 5 is close to the inner wall of shell 1;Balancing air pipe 41 is set on the static core 4, one end of the balancing air pipe 41 is located on the end face of the static core 4 and the moving core 5 close, the other end is connected with external gas source.

[0023] The above layout is reasonable, compact structure, when moving core 5 moves away from static core 4, the resistance of moving core 5 can be eliminated by injecting gas into balancing air pipe 41, increase the response speed of electromagnet, greatly improve the working efficiency of electromagnet.In addition, when moving core 5 moves towards static core 4, the resistance of moving core 5 can be increased by injecting gas into balancing air pipe 41, slow down the moving speed of moving core 5, avoid collision with static core, eliminate the generation of noise, and prolong the service life.

[0024] The shell 1 is also quickly connected with a terminal box 9, the terminal box 9 is internally provided with a circuit board 91, the circuit board 91 is electrically connected with the power supply wire. The circuit board 91 is provided with an electronic switch tube to quickly cut off the current, and the circuit board is provided with a protection circuit to avoid high pressure caused by the quick cut-off of the current in the coil, which can cause damage to the customer power supply, greatly improving the safety.

[0025] The static iron core 4 and the end side of the moving iron core 5 are fixedly provided with a magnetic isolation gasket 49, which separates the moving and static iron cores and maintains a certain gap, avoiding the influence of the residual magnetic force on the release time, and without considering the size of the residual magnetic force of different materials, and without heat treatment of the material to eliminate the residual magnetic force, which can greatly reduce the cost and has wide applicability.

[0026] The moving iron core 5 is provided with a weight reduction groove 51 at one end away from the static iron core 4 to realize lightweight control. The moving iron core 5 is provided with a shaft sleeve 52, and the shaft sleeve 52 is fixedly arranged on the shell 1 to reduce the friction between the moving iron core and the shell, prolong the service life, and reduce the friction force.

[0027] The shell 1 includes a left shell 11 and a right shell 12, and the left shell 11 is provided with a stepped protrusion at the end side, and the right shell 12 is provided with a groove matched with the left shell 11. The left shell 11 and the right shell 12 are also provided with a sealing ring, which is arranged in the groove.

[0028] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0029] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the utility model, and they are not used to limit the protection scope of the utility model, and equivalent embodiments or changes made without departing from the spirit of the utility model art should be included in the protection scope of the utility model.

Claims

1. Electromagnet with fast response function, comprising a housing (1) with a hollow cavity, characterized in that: The inner wall of the shell (1) is provided with a bearing bin (2), the bearing bin (2) is internally provided with a coil (3), the energized wire on the coil (3) is at least partially extended to the outside of the shell (1); The shell (1) is internally provided with a static iron core (4), the outer circumferential surface of the static iron core (4) is completely close to the inner wall of the bearing bin (2); One side of the static iron core (4) is provided with a moving iron core (5) which moves relative to it, the outer circumferential surface of the moving iron core (5) is close to the inner wall of the shell (1); The static iron core (4) is provided with a balance air pipe (41), one end of the balance air pipe (41) is located on the end face of the static iron core (4) close to the moving iron core (5), and the other end is connected with the air source outside.

2. The electromagnet having a quick response function according to claim 1, characterized by: The shell (1) is further connected with a junction box (9), the junction box (9) is internally provided with a circuit board (91), and the circuit board (91) is electrically connected with the energized wire.

3. The electromagnetic iron having a quick response function according to claim 1, characterized by: The end side of the static iron core (4) close to the moving iron core (5) is fixedly provided with a magnetic isolation gasket (49).

4. The electromagnetic iron having a quick response function according to claim 1, characterized by: The end of the moving iron core (5) away from the static iron core (4) is provided with a weight reduction groove (51).

5. The electromagnetic iron having a quick response function as claimed in claim 1, wherein: The moving iron core (5) is provided with a shaft sleeve (52), and the shaft sleeve (52) is fixedly arranged on the shell (1).

6. The electromagnetic iron having a quick response function as claimed in claim 1, wherein: The shell (1) comprises a left shell (11) and a right shell (12), the end side of the left shell (11) is provided with a stepped protruding portion, and the right shell (12) is provided with a groove matched with the left shell (11).

7. The electromagnet having a quick response function according to claim 6, characterized by: The left shell (11) and the right shell (12) are further provided with a sealing ring, and the sealing ring is arranged in the groove.

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