CN214410901U

CN214410901U - Proportional electromagnet

Info

Publication number: CN214410901U
Application number: CN202120188738.0U
Authority: CN
Inventors: 李春风; 郑皆琴
Original assignee: Loop Technology Changzhou Co ltd
Current assignee: Loop Technology Changzhou Co ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-10-15
Anticipated expiration: 2031-01-22

Abstract

The utility model relates to the technical field of electromagnets, in particular to a proportional electromagnet, which comprises a shell, a coil winding, a static iron core, a spring, a movable iron core and a push rod, wherein the coil winding is fixed in the shell, the static iron core passes through the coil winding, and is fixedly connected with the shell, one end of the push rod passes through the central hole of the static iron core and is in sliding connection with the static iron core, the other end of the push rod is fixedly connected with the movable iron core, one end of the spring is propped against the static iron core, the other end of the spring is propped against the push rod, the push rod is made of non-magnetic conductive material, the movable iron core and the push rod are integrally molded by injection, the proportional electromagnet of the utility model ensures that no gap is formed between the push rod and the movable iron core after long-time work by utilizing the integral molding of the movable iron core and the push rod, thereby avoiding the problem of shortening the working stroke, ensuring the durability of the proportion electromagnet, and having simple structure and low cost.

Description

Proportional electromagnet

Technical Field

The utility model belongs to the technical field of the electro-magnet technique and specifically relates to a proportion electro-magnet.

Background

The electric proportional valve is used as a highly integrated electromechanical integration product, is the core of an electric proportional control technology, represents the development direction of a fluid control technology, and is widely applied to factory automation and vehicle control. The performance of the proportional electromagnet directly determines the performance of the electric proportional valve as a core control element of the electric proportional valve, and the performance of the existing proportional electromagnet has the following problems: the working stroke is easy to be shortened after long-time work; the static characteristic and the transient characteristic are poor, and the performance of the electric proportional valve is influenced; the structure is complex, the volume and the weight are large, and the cost is high; the reliability is poor, and the product life of the electric proportional valve is influenced; low protection grade and poor temperature resistance, and is difficult to adapt to the application of special occasions.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problem that the working stroke of the proportional electromagnet is easy to shorten after the proportional electromagnet works for a long time in the prior art, the proportional electromagnet is provided.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a proportion electro-magnet, includes casing, coil winding, quiet iron core, spring, moves iron core and push rod, and coil winding fixes in the casing, and quiet iron core passes coil winding to with casing fixed connection, the one end of push rod passes the centre bore of quiet iron core, and with quiet iron core sliding connection, the other end of push rod with move iron core fixed connection, the one end of spring supports quiet iron core, the other end supports the push rod, the material of push rod is for not leading magnetic material, move iron core and the integrative injection moulding of push rod.

The utilization moves iron core and the integrative injection moulding of push rod in this scheme, ensures long-time work back push rod and moves the iron core between can not appear the clearance to avoid appearing the problem that working stroke shortens, and simple structure, it is with low costs.

Furthermore, the movable iron core is provided with a mounting hole, a bulge is formed in the mounting hole, and the push rod penetrates through the mounting hole; utilize bellied setting on moving the iron core, can realize moving iron core and push rod when integrative injection moulding, the arch can be embedded into the push rod to this bonding strength between improvement moves iron core and the push rod.

Furthermore, the protrusion is an annular protrusion, and the section of the annular protrusion is in a dovetail shape or a T shape; therefore, the bonding strength between the movable iron core and the push rod can be better enhanced.

Furthermore, the left end of the shell is fixed with an end cover, the right end of the shell is provided with a bent bottom edge, a fixed cover is fixed on the shell, the left end of the fixed cover is provided with an opening, the right end of the fixed cover is provided with a cover bottom, the fixed cover penetrates through the bottom edge and the coil winding, a static iron core penetrates through the end cover and then extends into the fixed cover from the left end opening of the fixed cover, a movable iron core is positioned in the fixed cover, the movable iron core or a push rod abuts against the cover bottom, and the static iron core is fixedly connected with the fixed cover.

Furthermore, the left end of the fixed cover is riveted and fixed on the static iron core.

Furthermore, a guide sleeve is arranged between the movable iron core and the fixed cover; the movable iron core can be prevented from being abraded by the design of the guide sleeve.

Furthermore, a gap is reserved between the guide sleeve and the static iron core; the air magnetism isolating section is formed, a magnetism isolating ring can be omitted, the cost is reduced, and the air magnetism isolating section is easy to be used as a commercialized floor.

Furthermore, the push rod is provided with a convex section, and the outer peripheral surface of the convex section is contacted with the inner peripheral surface of the fixed cover; the movable iron core can be prevented from being abraded.

Furthermore, a first sealing ring is arranged between the central hole of the static iron core and the push rod, the first sealing ring is lip-shaped sealing ring or O-shaped sealing performance, and a second sealing ring is arranged between the outer peripheral surface of the static iron core and the fixed cover; the design of first sealing washer and second sealing washer can improve its IP protection level, can use under the abominable operating mode of environment, and wherein, when first sealing washer adopts lip type sealing washer, can reduce the frictional force in the push rod motion process, transient state performance is good.

Furthermore, a third sealing ring is arranged between the end cover and the coil winding, and a fourth sealing ring is arranged between the bottom edge of the shell and the coil winding; the third sealing ring and the fourth sealing ring can improve the IP protection grade and the anti-vibration performance of the coil winding, and can be used under the working condition of severe environment.

The utility model has the advantages that: the utility model discloses a proportion electro-magnet utilizes and moves iron core and the integrative injection moulding of push rod, ensures long-time work back push rod and moves the iron core between can not appear the clearance to avoid appearing the problem that working stroke shortens, guaranteed the durability that the proportion electro-magnet used, and simple structure, it is with low costs.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic diagram of the proportional electromagnet of the present invention.

In the figure: 1. the sealing device comprises a shell, 101, a bottom edge, 2, a coil winding, 3, a static iron core, 301, a central hole, 4, a spring, 5, a movable iron core, 501, a mounting hole, 502, a protrusion, 6, a push rod, 7, an end cover, 8, a fixing cover, 801, a cover bottom, 9, a guide sleeve, 10, a gap, 11, a first sealing ring, 12, a second sealing ring, 13, a third sealing ring, 14 and a fourth sealing ring.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the invention only in a schematic way, and thus show only the components that are relevant to the invention, and the directions and references (e.g., upper, lower, left, right, etc.) may be used only to help describe the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.

Example 1

As shown in fig. 1, a proportional electromagnet comprises a housing 1, a coil winding 2, a stationary iron core 3, a spring 4, a movable iron core 5 and a push rod 6, wherein the coil winding 2 is fixed in the housing 1, the stationary iron core 3 penetrates through the coil winding 2 and is fixedly connected with the housing 1, one end of the push rod 6 penetrates through a center hole 301 of the stationary iron core 3 and is slidably connected with the stationary iron core 3, the other end of the push rod 6 is fixedly connected with the movable iron core 5, one end of the spring 4 abuts against the stationary iron core 3, the other end abuts against the push rod 6, the push rod 6 is made of a non-magnetic material, the push rod 6 is specifically made of engineering plastics such as PEEK (polyetheretherketone), and the movable iron core 5 and the push rod 6 are integrally injection-molded.

In the embodiment, the coil winding 2 comprises a coil and a framework, wherein the coil is wound on the framework; the material of casing 1 is for adopting magnetic conductivity material, can increase the magnetic flux.

The movable iron core 5 is provided with a mounting hole 501, a protrusion 502 is arranged in the mounting hole 501, and the push rod 6 penetrates through the mounting hole 501; by means of the arrangement of the protrusions 502 on the movable iron core 5, when the movable iron core 5 and the push rod 6 are integrally injection-molded, the protrusions 502 can be embedded into the push rod 6, and therefore the bonding strength between the movable iron core 5 and the push rod 6 is improved.

The protrusion 502 is an annular protrusion, and the section of the annular protrusion is dovetail-shaped or T-shaped; thereby the bonding strength between the movable iron core 5 and the push rod 6 can be better enhanced.

The left end of casing 1 is fixed with end cover 7, and the right-hand member has the base 101 of bending, and end cover 7 specifically can adopt interference fit to install the left end at casing 1, be fixed with fixed cover 8 on casing 1, the left end of fixed cover 8 has the opening, and the right-hand member of fixed cover 8 has the cover end 801, fixed cover 8 passes base 101 and coil winding 2, and quiet iron core 3 passes and stretches into in fixed cover 8 from the left end opening of fixed cover 8 behind end cover 7, moves iron core 5 and is located fixed cover 8, moves iron core 5 or push rod 6 and supports cover end 801, quiet iron core 3 and fixed cover 8 fixed connection, specifically the body, the left end riveting of fixed cover 8 is fixed on quiet iron core 3.

A guide sleeve 9 is arranged between the movable iron core 5 and the fixed cover 8; the movable iron core 5 can be prevented from being worn by the design of the guide sleeve 9; a gap 10 is reserved between the guide sleeve 9 and the static iron core 3; the air magnetism isolating section is formed, so that a magnetism isolating ring can be omitted, the cost is reduced, and the air magnetism isolating section is easy to be used as a commercialized ground; or the push rod 6 is provided with a convex section, the outer peripheral surface of the convex section is contacted with the inner peripheral surface of the fixed cover 8, the movable iron core 5 can be prevented from being abraded, and the guide sleeve 9 can be eliminated.

A first sealing ring 11 is arranged between the central hole 301 of the static iron core 3 and the push rod 6, the first sealing ring 11 is a lip-shaped sealing ring or O-shaped sealing performance, and a second sealing ring 12 is arranged between the outer peripheral surface of the static iron core 3 and the fixed cover 8; the design of first sealing washer 11 and second sealing washer 12 can improve its IP protection level, can use under the abominable operating mode of environment, and wherein, when first sealing washer 11 adopts lip type sealing washer, can reduce the frictional force in the push rod 6 motion process, transient state performance is good.

A third sealing ring 13 is arranged between the end cover 7 and the coil winding 2, and a fourth sealing ring 14 is arranged between the bottom edge 101 of the shell 1 and the coil winding 2; the third sealing ring 13 and the fourth sealing ring 14 can improve the IP protection level and the anti-vibration performance of the coil winding 2, and can be used under the working condition of severe environment.

In the initial state of the proportional electromagnet in this embodiment, the push rod 6 and the movable iron core 5 are pushed against the bottom 801 of the fixed cover 8 under the action of the spring 4, and after the proportional electromagnet loads an electric signal, the push rod 6 and the movable iron core 5 overcome the action of the spring 4 and generate motion, and the displacement of the motion is in direct proportion to the magnitude of the electric signal, and meanwhile, the output force is kept constant in the working stroke.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a proportion electro-magnet, including casing (1), coil winding (2), quiet iron core (3), spring (4), move iron core (5) and push rod (6), coil winding (2) are fixed in casing (1), coil winding (2) are passed in quiet iron core (3), and with casing (1) fixed connection, centre bore (301) of quiet iron core (3) are passed to the one end of push rod (6), and with quiet iron core (3) sliding connection, the other end of push rod (6) with move iron core (5) fixed connection, the one end of spring (4) supports quiet iron core (3), the other end supports push rod (6), its characterized in that: the push rod (6) is made of a non-magnetic conductive material, and the movable iron core (5) and the push rod (6) are integrally formed in an injection molding mode.

2. The proportional electromagnet of claim 1, wherein: the movable iron core (5) is provided with a mounting hole (501), a protrusion (502) is arranged in the mounting hole (501), and the push rod (6) penetrates through the mounting hole (501).

3. The proportional electromagnet of claim 2, wherein: the bulge (502) is an annular bulge, and the section of the annular bulge is in a dovetail shape or a T shape.

4. The proportional electromagnet of claim 1, wherein: the left end of casing (1) is fixed with end cover (7), and the right-hand member has base (101) of bending, be fixed with fixed cover (8) on casing (1), the left end of fixed cover (8) has the opening, and the right-hand member of fixed cover (8) has the cover end (801), base (101) and coil winding (2) are passed in fixed cover (8), and quiet iron core (3) pass behind end cover (7) and stretch into in fixed cover (8) from the left end opening of fixed cover (8), move iron core (5) and lie in fixed cover (8), move iron core (5) or push rod (6) and support cover end (801), quiet iron core (3) and fixed cover (8) fixed connection.

5. The proportional electromagnet of claim 4, wherein: the left end of the fixed cover (8) is riveted and fixed on the static iron core (3).

6. The proportional electromagnet of claim 4, wherein: and a guide sleeve (9) is arranged between the movable iron core (5) and the fixed cover (8).

7. The proportional electromagnet of claim 6, wherein: and a gap (10) is reserved between the guide sleeve (9) and the static iron core (3).

8. The proportional electromagnet of claim 4, wherein: the push rod (6) is provided with a convex section, and the outer peripheral surface of the convex section is contacted with the inner peripheral surface of the fixed cover (8).

9. The proportional electromagnet of claim 4, wherein: be equipped with first sealing washer (11) between centre bore (301) of quiet iron core (3) and push rod (6), first sealing washer (11) are lip type sealing washer or O type leakproofness, be equipped with second sealing washer (12) between the outer peripheral face of quiet iron core (3) and fixed cover (8).

10. The proportional electromagnet of claim 4, wherein: and a third sealing ring (13) is arranged between the end cover (7) and the coil winding (2), and a fourth sealing ring (14) is arranged between the bottom edge (101) of the shell (1) and the coil winding (2).