CN218940916U

CN218940916U - Magnetic circuit structure based on electromagnetic damping high-efficiency magnetic field utilization rate

Info

Publication number: CN218940916U
Application number: CN202223141091.XU
Authority: CN
Inventors: 章启策
Original assignee: CHONGQING LINGLONG ELECTRONIC CO LTD
Current assignee: CHONGQING LINGLONG ELECTRONIC CO LTD
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-04-28
Anticipated expiration: 2032-11-25

Abstract

The utility model belongs to the technical field of magnetic circuit layout for an X-direction vibration linear motor, and particularly relates to a magnetic circuit structure based on electromagnetic damping high-efficiency magnetic field utilization rate, which comprises a counterweight and stator assembly structure; the stator assembly structure further comprises a coil, wherein an iron core matched with the coil is arranged in the coil, and damping copper sheets integrated with the iron core are respectively fixed at two ends of the iron core; an iron core installation through hole is formed in the geometric center position of the damping copper sheet, the inner diameter of the iron core installation through hole is matched with the outer diameter of the iron core, and the end face of the iron core is level with the end face of the damping copper sheet; a group of magnetic steel components are respectively arranged outside two end faces of the iron core. Due to the structure, the utility model improves the driving force, the magnetic field utilization rate and the response speed.

Description

Magnetic circuit structure based on electromagnetic damping high-efficiency magnetic field utilization rate

Technical Field

The utility model belongs to the technical field of magnetic circuit layout for an X-direction vibration linear motor, and provides a magnetic circuit structure based on electromagnetic damping high-efficiency magnetic field utilization rate, which improves driving force, magnetic field utilization rate and response speed.

Background

The principle of the linear motor is that the electromagnetic force generated by the coil and the iron core interacts with the magnetic force of the magnetic steel to generate driving force, and the magnitude of the driving force determines the upper limit of the performance of the product. In the prior art, 1 or 2 air coils are generally adopted as electromagnetic force sources, and the magnetic fields generated by the air coils are limited in the same volume. The existing magnetic circuit structure does not effectively excavate the driving force space, so that the driving force of the product is limited, and electromagnetic damping cannot be realized; the driving force directly determines various performance indexes of the linear motor, and the small driving force leads to small displacement of the driving rotor assembly, small vibration and small vibration feeling for final experience; the driving force is small, so that the rotor assembly cannot be quickly moved at the starting moment, the starting time is long, and the experience effect is influenced; the driving force is small, so that the added damping value is small, the motor cannot be quickly stopped under the damping effect after power failure, the stopping time is long, and the experience effect is influenced; the driving force is small, so that the product has small vibration quantity in a transient mode, the transient mode has small vibration sense, and the experience effect is influenced.

In summary, the existing magnetic circuit structure has high magnetic leakage, electromagnetic damping cannot be realized, and the magnetic field is low in utilization rate, so that the driving force of the linear motor is small and the response speed is low.

Disclosure of Invention

In view of the above, an object of the present utility model is to provide a magnetic circuit structure based on electromagnetic damping high efficiency magnetic field utilization rate that improves driving force, magnetic field utilization rate and response speed.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a magnetic circuit structure based on electromagnetic damping high-efficiency magnetic field utilization rate, which comprises a balancing weight, a stator assembly mounting hole arranged on the balancing weight, and a stator assembly structure positioned in the stator assembly mounting hole; the method is characterized in that: the stator assembly structure further comprises a coil, wherein an iron core matched with the coil is arranged in the coil, the coil and the iron core are fixed into a whole through an adhesive layer formed by glue, and damping copper sheets integrated with the coil are respectively fixed at two ends of the iron core; an iron core installation through hole is formed in the geometric center position of the damping copper sheet, the inner diameter of the iron core installation through hole is matched with the outer diameter of the iron core, and the end face of the iron core is level with the end face of the damping copper sheet;

a group of magnetic steel components are respectively arranged outside two end faces of the iron core, the magnetic steel components also comprise magnetic steels made of two permanent magnets, and the outer end faces of the two magnetic steels are fixed on a magnetic conduction plate made of a magnetic conduction material; the magnetic pole directions of the four magnetic steels positioned outside the two end faces of the iron core are arranged in the same direction.

For the convenience of iron core and damping copper sheet batch production and assembly of being convenient for, further, in the above-mentioned scheme: the iron core is connected with the iron core installation through hole into a whole through an interference fit connection and/or an adhesive layer formed by glue.

In order to facilitate the installation of the subsequent damping copper sheet on the lower shell, further, in the scheme, the following damping copper sheet is provided with a damping copper sheet: the end face shape of the iron core and the end face shape of the damping copper sheet are rectangular, and the end face of the corresponding coil is also rectangular.

In order to facilitate installation of the magnetic steel assembly, further, in the above scheme: the magnetic conduction plate is fixedly connected with the balancing weight into a whole through an adhesive layer formed by glue.

The beneficial effects of the utility model are as follows: the iron core is arranged in the coil, and the coil and the iron core are adhered into a whole, and the magnetic steel assembly is arranged, so that the magnetic field utilization rate is improved, and the driving force is also improved; the two ends of the iron core are respectively provided with a damping copper sheet, and when the magnetic steel moves, the magnetic steel and the damping copper sheets cut magnetic lines of force to provide reverse electromagnetic resistance for the rotor assembly. The electromagnetic damping adopts non-contact type, a certain gap is reserved between the damping copper sheet and the magnetic steel, and when the magnetic steel moves, the magnetic steel and the damping copper sheet are not in physical contact, so that the problems of abrasion, cracking and the like caused by contact are avoided; the electromagnetic damping adopts the copper sheet as damping, the physical properties of the copper sheet are stable, and the performance consistency of the product under various high and low temperature environments is good due to the extremely small change of the change performance of the use environment; the damping copper sheet is made of rigid general materials, and the process feasibility is high and the cost is low when the copper sheet is added into the product for damping. The magnetic field utilization rate is improved, the driving force is improved, and meanwhile, the production cost is reduced.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in the following preferred detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic perspective view of the explosive state of the present utility model;

FIG. 3 is a schematic structural diagram of a magnetic steel assembly and stator assembly according to the present utility model;

FIG. 4 is a schematic structural diagram of the magnetic steel stress conditions of the coil of the present utility model when passing current;

FIG. 5 is a schematic structural diagram of the magnetic steel stress conditions in the commutation of the current through the coil in FIG. 4;

reference numerals: 1. balancing weight; 2. a stator assembly mounting hole; 3. a stator assembly structure; 4. a magnetic steel component; 401. magnetic steel; 402. a magnetic conductive plate; 301. a coil; 302. an iron core; 303. damping copper sheet; 304. and the iron core is provided with a through hole.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present utility model by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

As shown in fig. 1-5, the magnetic circuit structure based on electromagnetic damping high-efficiency magnetic field utilization rate comprises a balancing weight 1, a stator assembly mounting hole 2 arranged on the balancing weight 1, and a stator assembly structure 3 positioned in the stator assembly mounting hole 2; the method is characterized in that: the stator assembly structure 3 further comprises a coil 301, wherein an iron core 302 matched with the coil 301 is arranged in the coil 301, the coil 301 and the iron core 302 are fixed into a whole through an adhesive layer formed by glue, and damping copper sheets 303 integrated with the two ends of the iron core 302 are respectively fixed; an iron core mounting through hole 3044 is formed in the geometric center position of the damping copper sheet 303, the inner diameter of the iron core mounting through hole 304 is matched with the outer diameter of the iron core 302, and the end face of the iron core 302 is flush with the end face of the damping copper sheet 303;

a group of magnetic steel components 4 are respectively arranged outside two end surfaces of the iron core 302, the magnetic steel components 4 comprise two pieces of magnetic steel 401 made of permanent magnets, and the outer end surfaces of the two pieces of magnetic steel 401 are fixed on a magnetic conduction plate 402 made of a magnetic conduction material; the magnetic pole directions of the four pieces of magnetic steel 401 located outside the two end faces of the iron core 302 are arranged in the same direction. In this embodiment, the structure is a core magnetic circuit of a linear motor, when current is supplied to the coil, the coil generates a reinforced magnetic field through the iron core, the magnetic field can be effectively converged at the end part of the iron core through the iron core, the magnetic steel is opposite to the end part of the iron core and is a magnetic steel of a rotor assembly, the polarities of the magnetic steel are exactly one and are attracted to the iron core, one and the iron core repel each other, so that the stress directions of the two magnetic steels are the same, the polarities of the magnetic steel at the other end of the iron core are the same, so that the stress directions of all the magnetic steels are in one direction, and the formed total force drives the rotor assembly structure 3 to be 4 times of the stress of the magnetic steel 401 and to displace in one direction; when the directions of the currents are opposite, the directions of the generated electromagnetic fields are opposite, the forces applied to the 4 magnetic fields are opposite, the total force is opposite to the directions, and the formed total force drives the rotor assembly structure 3 to be in opposite directions; the current direction is repeatedly switched in this way, so that the rotor component makes reciprocating motion under the action of driving force. The magnetic steel component 4 and the balancing weight 1 are integrated to form an electromagnetic field generated by a rotor component structure, so that the overall performance index of the linear motor is directly determined; the greater the driving force, the faster the response speed, the greater the vibration amount, the greater the damping that can be added, the greater the damping, and the faster the stop time of the motor.

In order to facilitate mass production and assembly of the iron core 302 and the damping copper sheet 303, in the above embodiment, it is preferable that: the iron core 302 and the iron core mounting through hole 304 are connected into a whole through an interference fit connection and/or an adhesive layer formed by glue.

To facilitate the subsequent mounting of the damping shim 303 on the lower housing, in the above embodiment, it is preferable that: the end face shape of the iron core 302 and the end face shape of the damping copper sheet 303 are both rectangular, and the end face of the corresponding coil 301 is also rectangular.

To facilitate the installation of the magnetic steel assembly 4, in the above embodiment, it is preferable that: the magnetic conductive plate 402 is fixedly connected with the balancing weight 1 into a whole through an adhesive layer formed by glue.

In the above embodiment, the component is a commercially available product.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.

Claims

1. The utility model provides a magnetic circuit structure based on electromagnetic damping high-efficient magnetic field utilization, includes balancing weight (1), stator module mounting hole (2) on balancing weight (1), stator module structure (3) that are arranged in stator module mounting hole (2); the method is characterized in that: the stator assembly structure (3) further comprises a coil (301), an iron core (302) matched with the coil is arranged in the coil (301), the coil (301) and the iron core (302) are fixed into a whole through an adhesive layer formed by glue, and damping copper sheets (303) integrated with the iron core are respectively fixed at two ends of the iron core (302); an iron core installation through hole (304) is formed in the geometric center position of the damping copper sheet (303), the inner diameter of the iron core installation through hole (304) is matched with the outer diameter of the iron core (302), and the end face of the iron core (302) is flush with the end face of the damping copper sheet ((303));

a group of magnetic steel components (4) are respectively arranged outside two end faces of the iron core (302), the magnetic steel components (4) comprise two pieces of magnetic steel (401) made of permanent magnets, and the outer end faces of the two pieces of magnetic steel (401) are fixed on a magnetic conduction plate (402) made of a magnetic conduction material; the magnetic pole directions of the four magnetic steels (401) positioned outside the two end surfaces of the iron core (302) are arranged in the same direction; the magnetic conduction plate (402) is fixed on the balancing weight (1).

2. The magnetic circuit structure based on electromagnetic damping high-efficiency magnetic field utilization rate according to claim 1, wherein: the iron core (302) and the iron core installation through hole (304) are connected into a whole through an interference fit connection and/or an adhesive layer formed by glue.

3. The magnetic circuit structure based on electromagnetic damping high-efficiency magnetic field utilization rate according to claim 1 or 2, characterized in that: the end face shape of the iron core (302) and the end face shape of the damping copper sheet (303) are rectangular, and the end face of the corresponding coil (301) is also rectangular.

4. The magnetic circuit structure based on electromagnetic damping high-efficiency magnetic field utilization rate according to claim 1, wherein: the magnetic conduction plate (402) is fixedly connected with the balancing weight (1) into a whole through an adhesive layer formed by glue.