CN217214328U

CN217214328U - Electromagnet

Info

Publication number: CN217214328U
Application number: CN202220455317.4U
Authority: CN
Inventors: 李风波
Original assignee: Dongguan Sifan Electronic Technology Co ltd
Current assignee: Dongguan Sifan Electronic Technology Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-08-16
Anticipated expiration: 2032-03-03

Abstract

The utility model belongs to the technical field of electromagnets, in particular to an electromagnet, which comprises a yoke, a bobbin, a coil, a copper pipe, a movable iron core, a fixed iron core and an annular stop piece; a spring is arranged between the first end of the movable iron core and the fixed iron core, and the second end of the movable iron core extends out of the copper pipe; the annular stop piece is arranged on the outer side of the yoke and provided with an inner ring and an outer ring, the inner ring of the annular stop piece is clamped with the second end of the movable iron core, the outer ring of the annular stop piece is arranged on one side, close to the yoke, of the inner ring of the annular stop piece, and an elastic part for buffering is arranged between the inner ring of the annular stop piece and the outer ring of the stop part; the annular stop piece is contacted with the outer side surface of the yoke, and the elastic part of the annular stop piece generates elastic deformation to slow down impact, so that secondary buffering is realized on the movable iron core, and the noise generated by collision of the movable iron core is further reduced.

Description

Electromagnet

Technical Field

The utility model belongs to the technical field of the electro-magnet, especially, relate to an electro-magnet.

Background

In a traditional electromagnet, the electromagnet generally comprises a coil, a static iron core and a movable iron core; the movable iron core is driven to approach relative to the static iron core by electrifying the coil, and the movable iron core easily impacts the static iron core in the approach process, so that the sound is generated, and the noise of the electromagnet is relatively large; in addition, the movable iron core is far away from the static iron core, and may hit the electromagnet housing, which is also one of the causes of noise.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electromagnet, the movable iron core that aims at solving the electromagnet among the prior art bumps into quiet iron core easily and produces great noise technical problem.

In order to achieve the above object, an embodiment of the present invention provides an electromagnet, which includes a yoke, a bobbin, a coil, a copper pipe, a movable iron core, a fixed iron core, and an annular stop piece; the coil is sleeved on the outer ring of the coil, the copper pipe is clamped on the inner ring of the coil, the first end of the fixed iron core is arranged in the copper pipe, the second end of the fixed iron core extends out of the copper pipe and is fixedly connected with the yoke, the first end of the movable iron core is movably arranged in the copper pipe, a spring is arranged between the first end of the movable iron core and the fixed iron core, and the second end of the movable iron core extends out of the copper pipe; annular backstop piece is located the outside of yoke, annular backstop piece has inner circle and outer lane, the annular end the separation blade the inner circle with movable core's second end joint, the annular end the outer lane of separation blade is located the inner circle of separation blade is close to one side of yoke, the annular end the separation blade the inner circle with be equipped with the elasticity portion that is used for the buffering between the outer lane of annular backstop portion.

Optionally, the elastic part is provided with a strip-shaped groove, one end of the strip-shaped groove extends towards the inner ring direction of the annular stopping piece, and one end of the strip-shaped groove extends towards the outer ring direction of the annular stopping piece.

Optionally, the elastic part is of an annular structure, the elastic part is provided with a plurality of the strip-shaped grooves, and the strip-shaped grooves surround the inner ring axis of the annular stop piece and are uniformly distributed.

Optionally, the elastic part is a plastic sheet.

Optionally, a gasket for buffering the impact force is arranged on one side of the fixed iron core, which is close to the movable iron core.

Optionally, the inner ring of the annular stopper piece, the elastic portion, and the outer ring of the annular stopper piece are integrally formed.

Optionally, a second end of the movable iron core is provided with noise reduction cotton, and the noise reduction cotton is arranged between the annular stop piece and the yoke.

Optionally, a clamping groove is formed in the outer side surface of the second end of the movable iron core, and the clamping groove is clamped with the inner ring of the annular stopping piece.

Optionally, an opening through which the movable iron core passes is formed in the yoke, a shaft sleeve is arranged in the opening, and the inner side surface of the shaft sleeve is attached to the outer side surface of the movable iron core.

Optionally, a through hole is formed in the middle of the fixed iron core, and a guide rod is connected to the first end of the movable iron core and slidably connected to the through hole.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the electro-magnet have one of following technological effect at least: the electromagnet is electrified to drive the movable iron core to move towards the direction close to the fixed iron core, the first end of the movable iron core extrudes the spring in the moving process, the elastic force of the spring realizes primary buffering on the movable iron core, meanwhile, the second end of the movable iron core is provided with the annular stop sheet, in the moving process of the movable iron core, the annular stop sheet is in contact with the outer side surface of the yoke, the elastic part of the annular stop sheet generates elastic deformation to slow down impact, secondary buffering is realized on the movable iron core, and the noise generated by collision of the movable iron core is further reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of an electromagnet according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of an electromagnet according to an embodiment of the present invention.

Fig. 3 is an explosion diagram of an electromagnet according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

10-yoke 20-bobbin 30-coil

40-copper pipe 50-movable iron core 60-fixed iron core

70-guide rod 80-annular stop piece 81-elastic part

82-strip-shaped groove 90-silencing cotton.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-3 are exemplary and intended to be used to illustrate embodiments of the present invention, and should not be construed as limiting the invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1 to 3, there is provided an electromagnet, including a yoke 10, a bobbin 20, a coil 30, a copper pipe 40, a movable iron core 50, a fixed iron core 60, and an annular stopper piece 80; the bobbin 20 is arranged in the yoke 10, the bobbin 20 is provided with an inner ring and an outer ring, the coil 30 is sleeved on the outer ring of the bobbin 20, the copper pipe 40 is clamped on the inner ring of the bobbin 20, the first end of the fixed iron core 60 is arranged in the copper pipe 40, the second end of the fixed iron core 60 extends out of the copper pipe 40 and is fixedly connected with the yoke 10, the first end of the movable iron core 50 is movably arranged in the copper pipe 40, a spring is arranged between the first end of the movable iron core 50 and the fixed iron core 60, and the second end of the movable iron core 50 extends out of the copper pipe 40; the annular stop piece 80 is arranged outside the yoke 10, the annular stop piece 80 is provided with an inner ring and an outer ring, the inner ring of the annular stop piece 80 is clamped with the second end of the movable iron core 50, the outer ring of the annular stop piece 80 is arranged on one side, close to the yoke 10, of the inner ring of the annular stop piece 80, and an elastic part 81 for buffering is arranged between the inner ring of the annular stop piece 80 and the outer ring of the stop part.

In the embodiment of the present invention, the electromagnet is powered on and then drives the movable iron core 50 to move toward the direction close to the fixed iron core 60, the first end extrusion spring of the movable iron core 50 during the moving process, the elastic force of the spring realizes a buffer to the movable iron core 50, and simultaneously, the second end of the movable iron core 50 is provided with the annular stop piece 80, during the moving process of the movable iron core 50, the annular stop piece 80 contacts with the outer side surface of the yoke 10, the elastic part 81 of the annular stop piece 80 generates elastic deformation to slow down the impact, the secondary buffer is realized for the movable iron core 50, and the noise generated by the movable iron core 50 due to the collision is further reduced.

In another embodiment of the present invention, the elastic portion 81 of the electromagnet is provided with a strip-shaped groove 82, one end of the strip-shaped groove 82 extends toward the inner ring direction close to the annular retaining piece 80, one end of the strip-shaped groove 82 extends toward the outer ring direction close to the annular retaining piece 80, the strip-shaped groove 82 is formed on the elastic portion 81 to enhance the elasticity of the elastic portion 81, so as to improve the buffering effect and further reduce the noise.

In another embodiment of the present invention, the elastic portion 81 of the electromagnet is in an annular structure, a plurality of strip-shaped grooves 82 are formed in the elastic portion 81, and each strip-shaped groove 82 surrounds the inner ring axis of the annular retaining piece 80 to be uniformly distributed, so that the stress on each part of the elastic portion 81 is balanced to improve the buffering effect of the annular retaining piece 80.

In another embodiment of the present invention, the elastic portion 81 of the electromagnet is a plastic sheet, which has a good buffering effect and is convenient for processing.

In another embodiment of the present invention, a spacer for reducing the impact force is disposed on one side of the fixed iron core 60 of the electromagnet close to the movable iron core 50, and the first end of the movable iron core 50 contacts with the spacer, so as to further reduce the noise generated during the collision of the movable iron core 50.

The utility model discloses a further embodiment, the inner circle of the annular separation blade 80 of this electro-magnet, elastic component 81 and the outer lane integrated into one piece of annular separation blade 80, the processing of being convenient for improves the overall structure stability of annular separation blade 80, improves the toughness of annular separation blade 80, improves buffering effect.

In another embodiment of the present invention, the second end of the movable iron core 50 of the electromagnet is provided with silencing cotton 90, the silencing cotton 90 is disposed between the annular stopping piece 80 and the yoke 10, and the silencing cotton 90 is disposed to reduce the collision force between the annular stopping piece 80 and the yoke 10, so as to reduce the noise and the loss of the annular stopping piece 80.

In another embodiment of the present invention, the outer side surface of the second end of the movable iron core 50 of the electromagnet is provided with a clamping groove, and the clamping groove is clamped with the inner ring of the annular stop piece 80, so that the assembly is facilitated, and the assembly efficiency is improved.

In another embodiment of the present invention, an opening for the movable iron core 50 to pass through is provided on the yoke 10 of the electromagnet, the opening is provided with a shaft sleeve, the inner side surface of the shaft sleeve is attached to the outer side surface of the movable iron core 50, the movement stability of the movable iron core 50 is improved, the shaking of the fixed iron core in the movement process is reduced, and the noise is further reduced.

In another embodiment of the present invention, a through hole is disposed in the middle of the fixed iron core 60 of the electromagnet, the first end of the movable iron core 50 is connected to a guide rod 70, and the guide rod 70 is slidably connected to the through hole, so as to improve the motion stability of the movable iron core 50.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An electromagnet, characterized by: comprises a yoke, a bobbin, a coil, a copper pipe, a movable iron core, a fixed iron core and an annular stop piece; the coil is sleeved on the outer ring of the bobbin, the copper pipe is clamped on the inner ring of the bobbin, the first end of the fixed iron core is arranged in the copper pipe, the second end of the fixed iron core extends out of the copper pipe and is fixedly connected with the yoke, the first end of the movable iron core is movably arranged in the copper pipe, a spring is arranged between the first end of the movable iron core and the fixed iron core, and the second end of the movable iron core extends out of the copper pipe; annular backstop piece is located the outside of yoke, annular backstop piece has inner circle and outer lane, the annular end the separation blade the inner circle with movable iron core's second end joint, the annular end the outer lane of separation blade is located the annular end the inner circle of separation blade is close to one side of yoke, the annular end the separation blade the inner circle with end and be equipped with the elasticity portion that is used for the buffering between the outer lane of separation blade.

2. The electromagnet of claim 1 wherein: the elastic part is equipped with the bar groove, the one end in bar groove is toward being close to the inner circle direction of annular separation blade extends the setting, the one end in bar groove is toward being close to the outer lane direction of annular separation blade extends the setting.

3. The electromagnet of claim 2 wherein: the elastic part is of an annular structure, a plurality of strip-shaped grooves are formed in the elastic part, and the strip-shaped grooves surround the inner ring axis of the annular stopping piece and are evenly distributed.

4. The electromagnet of claim 1 wherein: the elastic part is a plastic sheet.

5. The electromagnet of claim 1 wherein: and a gasket for reducing impact force is arranged on one side of the fixed iron core, which is close to the movable iron core.

6. The electromagnet of claim 1 wherein: the inner ring of the annular stop piece, the elastic part and the outer ring of the annular stop piece are integrally formed.

7. The electromagnet according to any one of claims 1 to 6, characterized in that: the second end of the movable iron core is provided with silencing cotton, and the silencing cotton is arranged between the annular stopping piece and the yoke.

8. The electromagnet according to any one of claims 1 to 6, characterized in that: the outer side face of the second end of the movable iron core is provided with a clamping groove, and the clamping groove is connected with the inner ring of the annular stop piece in a clamping mode.

9. The electromagnet according to any one of claims 1 to 6, characterized in that: the yoke is provided with an opening for the movable iron core to pass through, the opening is provided with a shaft sleeve, and the inner side surface of the shaft sleeve is attached to the outer side surface of the movable iron core.

10. The electromagnet according to any one of claims 1 to 6, characterized in that: the middle part of the fixed iron core is provided with a through hole, the first end of the movable iron core is connected with a guide rod, and the guide rod is connected in the through hole in a sliding mode.