CN218958766U - High-driving-force quick-response linear motor based on electromagnetic damping - Google Patents
High-driving-force quick-response linear motor based on electromagnetic damping Download PDFInfo
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- CN218958766U CN218958766U CN202223141112.8U CN202223141112U CN218958766U CN 218958766 U CN218958766 U CN 218958766U CN 202223141112 U CN202223141112 U CN 202223141112U CN 218958766 U CN218958766 U CN 218958766U
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Abstract
The utility model belongs to the technical field of X-direction vibration linear motors, and particularly relates to a high-driving-force quick-response linear motor based on electromagnetic damping, which comprises an upper shell and a lower shell, wherein a stator assembly structure is arranged on a balancing weight, and the lower end of the stator assembly structure is fixed on the top plate surface of the lower shell; 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; a group of magnetic steel components are arranged outside two end faces of the iron core respectively, a group of opposite outer side walls of the balancing weight are respectively provided with a spring, one end of each spring is welded with the outer side wall of the balancing weight where the spring is located into a whole, and the other end of each spring is welded with the upper shell into a whole. Due to the structure, the utility model improves the driving force, the magnetic field utilization rate and the response speed.
Description
Technical Field
The utility model belongs to the technical field of X-direction vibration linear motors, and provides an electromagnetic damping-based high-driving-force quick-response linear motor capable of improving 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; 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 damping mode of the stator assembly structure of the existing X-direction vibration linear motor realizes reverse resistance through contact extrusion or pulling, has fatigue effect through contact, and is easy to fail after long-time working; in addition, the contact type spring also can influence the stress change of the spring, so that the spring is broken after long-time use under the action of external force; the magnetic circuit structure of the active cell structure component of the existing X-direction vibration linear motor has high magnetic leakage, electromagnetic damping cannot be realized, and the utilization rate of the magnetic field is low, 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 high-driving-force fast-response linear motor based on electromagnetic damping, which 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 high-driving force quick response linear motor based on electromagnetic damping, which comprises an upper shell and a lower shell, wherein a space formed by encircling the upper shell and the lower shell is a motor inner cavity, a balancing weight is arranged in the upper shell, a stator assembly mounting hole is formed in the balancing weight, a stator assembly structure is arranged in the stator assembly mounting hole, and the lower end of the stator assembly structure is fixed on the top plate surface of the lower shell; 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; an FPC (flexible printed circuit) connecting circuit board is fixed on the top plate surface of the lower shell, and damping copper sheet mounting holes, bonding PADs and two PAD external circuit connecting ports are formed in the FPC connecting circuit board; the lower part of the damping copper sheet is positioned in the damping copper sheet mounting hole, and the bonding pad and the two ends of the coil are welded into a whole to realize electric connection;
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; the magnetic conduction plate is fixed on the balancing weight; the balancing weight is characterized in that a group of opposite outer side walls of the balancing weight are respectively provided with a spring, one end of each spring is welded with the outer side wall of the balancing weight where the spring is located into a whole, and the other end of each spring is welded with the upper shell into a whole.
In order to facilitate mass production of damping copper sheets, iron cores and convenience in assembly, further, in the scheme, the damping copper sheets are manufactured by the following steps: 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 convenience of assembly, in the scheme, the following steps are provided: 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 ensure the stability of the stator assembly structure, further, in the above scheme: the coil and/or damping copper sheet of the stator assembly structure and the top plate surface of the lower shell are/is fixed into a whole.
In order to ensure the connection stability of the coil and the lower shell, further, in the scheme: the lower part of the coil is fixed with the top plate surface of the lower shell into a whole through an adhesive layer formed by glue.
In order to ensure the stability of the damping copper sheet, further, in the scheme: the damping copper sheet is welded on the top plate surface of the lower shell through laser.
In order to ensure the stability of the magnetic conduction plate, further, in the scheme: the magnetic conduction plate is fixedly connected with the balancing weight into a whole through an adhesive layer formed by glue.
In order to ensure the assemblability between the counterweight and the upper housing, further, in the above scheme: one end of the spring and the outer side wall of the balancing weight where the spring is located are welded with the spring into a whole through a locating piece a, and the other end of the spring and the upper shell are welded with the spring into a whole through a locating piece b and a locating piece c.
In order to ensure the stability between the springs and the balancing weights and the upper shell, further, in the scheme: the locating piece a is located on the outer side wall of one end of the spring, and the other end of the spring is located between the locating piece b and the locating piece c.
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 view of the structure of the explosive state of the present utility model;
FIG. 2 is a schematic view of the structure of the stator assembly of the present utility model in an exploded condition;
FIG. 3 is a schematic view of the magnetic steel assembly of the present utility model at the upper housing;
FIG. 4 is a schematic diagram of the magnetic circuit structure of the present utility model;
FIG. 5 is a schematic perspective view of the explosive state of the magnetic circuit structure of the present utility model;
FIG. 6 is a schematic structural diagram of a magnetic steel assembly and stator assembly according to the present utility model;
FIG. 7 is a schematic structural diagram of the magnetic steel stress conditions of the coil of the present utility model when passing current;
FIG. 8 is a schematic structural diagram of the magnetic steel stress conditions during 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. an iron core mounting through hole; 5. an upper housing; 6. a lower housing; 7. the FPC is connected with the circuit board; 8. damping copper sheet mounting holes; 9. a bonding pad; 10. a spring; 11. a positioning sheet a; 12. a positioning sheet b; 13. a positioning sheet c; 14. the PAD external circuit connects to the port.
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 to 8, the high-driving force quick response linear motor based on electromagnetic damping of the utility model comprises an upper shell 5 and a lower shell 6, wherein a space formed by enclosing the upper shell 5 and the lower shell 6 is a motor inner cavity, a balancing weight 1 is positioned in the upper shell 5, a stator assembly mounting hole 2 is arranged on the balancing weight 1, a stator assembly structure 3 is positioned in the stator assembly mounting hole 2, and the lower end of the stator assembly structure 3 is fixed on the top plate surface of the lower shell 6; 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 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; an FPC (flexible printed circuit) connecting circuit board 7 is fixed on the top plate surface of the lower shell 6, and damping copper sheet mounting holes 8, bonding PADs 9 and two PAD external circuit connecting ports 14 are arranged on the FPC connecting circuit board 7; the lower part of the damping copper sheet 303 is positioned in the damping copper sheet mounting hole 8, and the bonding pad 9 and the two ends of the coil 301 are welded into a whole to realize electrical connection;
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 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; the balancing weight 1 is provided with a spring 10 on a group of opposite outer side walls, one end of the spring 10 is welded with the outer side wall of the balancing weight 1 where the spring 10 is located, and the other end of the spring 10 is welded with the upper shell 5 into a whole. 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 current direction is opposite, the generated electromagnetic field is opposite,
the forces applied by the 4 magnetic fields are opposite, the total force is opposite to the direction, and the formed total force drives the rotor assembly structure 3 to be in the opposite direction; 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. The coil 301 of the stator assembly structure 3 is a source for generating electromagnetic force, when an external circuit supplies current to the coil, the coil generates electromagnetic field, and the electromagnetic field generated by the coil interacts with the magnetic field of the magnetic steel to generate driving force; the iron core 302 of the stator assembly structure 3 is made of magnetic conductive material, and is arranged in the center of the coil 301, and the electrified coil 301 with the iron core 302 can greatly lift the magnetic field, so that the driving force of the motor is lifted; when the magnetic steel 401 moves, the damping copper sheet 303 of the stator assembly structure 3 cuts magnetic force lines with the magnetic steel 401 and the damping copper sheet 303 to produce resistance opposite to the moving direction of the rotor assembly structure integrally formed by the magnetic steel assembly 4 and the balancing weight 1.
In order to facilitate mass production of damping copper sheets, iron cores and convenience in assembly, further, in the scheme, the damping copper sheets are manufactured by the following steps: 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.
In order to facilitate the convenience of assembly, in the scheme, the following steps are provided: 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.
In order to ensure the stability of the stator assembly structure 3, further, in the above scheme: the coil 301 and/or the damping copper sheet 303 of the stator assembly structure 3 are/is fixed with the top plate surface of the lower housing 6 into a whole.
In order to ensure the connection stability of the coil and the lower shell, further, in the scheme: the lower part of the coil 301 is fixed with the top plate surface of the lower housing 6 by an adhesive layer formed by glue.
In order to ensure the stability of the damping copper sheet, further, in the scheme: the damping copper sheet 303 is welded to the top plate surface of the lower case 6 by laser.
To ensure the stability of the magnetic conductive plate 402, further, in the above scheme: the magnetic conductive plate 402 is fixedly connected with the balancing weight 1 into a whole through an adhesive layer formed by glue.
In order to ensure the assemblability between the counterweight 1 and the upper housing 5, further, in the above scheme: one end of the spring 10 and the outer side wall of the balancing weight 1 where the spring is positioned are welded with the spring through a positioning sheet a11, and the other end of the spring 10 and the upper shell 5 are welded with the spring through a positioning sheet b12 and a positioning sheet c 13.
In order to ensure the stability between the spring 10 and the balancing weight 1 and the upper housing 5, further, in the above scheme: the positioning piece a11 is positioned on the outer side wall of one end of the spring 10, and the other end of the spring 10 is positioned between the positioning piece b12 and the positioning piece c 13.
In the above embodiment, the component is a commercially available product.
Claims (9)
1. The utility model provides a high-driving force quick response linear motor based on electromagnetic damping, includes upper casing (5) and lower casing (6), and the space that this upper casing (5) encloses with lower casing (6) and forms is the motor inner chamber, is located balancing weight (1) in upper casing (5), stator module mounting hole (2) on balancing weight (1), stator module structure (3) that are located stator module mounting hole (2), and the lower extreme of this stator module structure (3) is fixed on the top face of lower casing (6); 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)); an FPC (flexible printed circuit) connecting circuit board (7) is fixed on the top plate surface of the lower shell (6), and damping copper sheet mounting holes (8), bonding PADs (9) and two PAD external circuit connecting ports (14) are formed in the FPC connecting circuit board (7); the lower part of the damping copper sheet (303) is positioned in the damping copper sheet mounting hole (8), and the bonding pad (9) and the two ends of the coil (301) are welded into a whole to realize electric connection;
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); a group of opposite outer side walls of the balancing weight (1) are respectively provided with a spring (10), one end of the spring (10) is welded with the outer side wall of the balancing weight (1) where the spring is located into a whole, and the other end of the spring (10) is welded with the upper shell (5) into a whole.
2. The electromagnetic damping-based high-driving force quick response linear motor 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 electromagnetic damping-based high-driving force quick response linear motor 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 electromagnetic damping-based high-driving force quick response linear motor according to claim 1, wherein: the coil (301) and/or the damping copper sheet ((303)) of the stator assembly structure (3) are/is fixed with the top plate surface of the lower shell (6) into a whole.
5. The electromagnetic damping-based high-driving force quick response linear motor according to claim 4, wherein: the lower part of the coil (301) is fixed with the top plate surface of the lower shell (6) into a whole through an adhesive layer formed by glue.
6. The electromagnetic damping-based high-driving force quick response linear motor according to claim 4, wherein: the damping copper sheet (303) is welded to the top plate surface of the lower housing (6) by laser.
7. The electromagnetic damping-based high-driving force quick response linear motor 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.
8. The electromagnetic damping-based high-driving force quick response linear motor according to claim 1, wherein: one end of the spring (10) and the outer side wall of the balancing weight (1) where the spring is positioned are welded with the spring into a whole through a locating piece a (11), and the other end of the spring (10) and the upper shell (5) are welded with the spring into a whole through a locating piece b (12) and a locating piece c (13).
9. The electromagnetic damping-based high-driving force quick response linear motor according to claim 8, wherein: the locating piece a (11) is positioned on the outer side wall of one end of the spring (10), and the other end of the spring (10) is positioned between the locating piece b (12) and the locating piece c (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223141112.8U CN218958766U (en) | 2022-11-25 | 2022-11-25 | High-driving-force quick-response linear motor based on electromagnetic damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223141112.8U CN218958766U (en) | 2022-11-25 | 2022-11-25 | High-driving-force quick-response linear motor based on electromagnetic damping |
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| Publication Number | Publication Date |
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| CN218958766U true CN218958766U (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223141112.8U Active CN218958766U (en) | 2022-11-25 | 2022-11-25 | High-driving-force quick-response linear motor based on electromagnetic damping |
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| CN (1) | CN218958766U (en) |
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- 2022-11-25 CN CN202223141112.8U patent/CN218958766U/en active Active
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