CN213717823U - Large-stroke electromagnetic driving device with balanced driving force - Google Patents
Large-stroke electromagnetic driving device with balanced driving force Download PDFInfo
- Publication number
- CN213717823U CN213717823U CN202023070495.5U CN202023070495U CN213717823U CN 213717823 U CN213717823 U CN 213717823U CN 202023070495 U CN202023070495 U CN 202023070495U CN 213717823 U CN213717823 U CN 213717823U
- Authority
- CN
- China
- Prior art keywords
- moving magnet
- shell
- sliding contact
- coil
- magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Linear Motors (AREA)
Abstract
The utility model discloses a large-stroke electromagnetic driving device with balanced driving force, which comprises a shell, a sheet coil, a conductive sliding contact plate, a moving magnet and a carbon brush; the slice coil is hugged closely in proper order and encircles in the casing outside, adjacent slice coil end to end and in proper order with electrically conductive wiping board connects, the axis direction synchronous motion can be followed in the casing to the carbon brush with moving magnet, and two carbon brushes contact with electrically conductive wiping board, through the coil formation electric current return circuit, utilize to have the dislocation of same direction all the time in the electromagnetic field that electric coil produced and the geometric center that moves the magnet magnetic field for moving magnet receives the electromagnetism of a same direction all the time and pushes away (or pull) the power and move, changes the direction of current and can change moving magnet's direction of motion.
Description
Technical Field
The utility model belongs to the technical field of electromagnetic drive, in particular to drive balanced long-stroke electromagnetic drive device of power.
Background
With the development of industry and ubiquitous automation technology application, some power output devices which are simple in structure, rapid in action, convenient to control and capable of adapting to various environments play more and more important roles; such as an electromagnetic drive, and the like, particularly a push-pull electromagnetic drive. However, the conventional push-pull electromagnetic driving device generally adopts a moving iron and static iron structure of a closed magnetic circuit, the size of the electromagnetic driving force is related to the gap of the magnetic circuit, the smaller the gap is, the larger the generated electromagnetic force is, and when the moving iron core and the static iron core are far away from each other, the electromagnetic force is sharply reduced, so that the effective stroke of the moving iron core is greatly limited.
Although an open magnetic circuit system is adopted in the past, a closed magnetic circuit is formed without a magnetic conductive material, the problem of a magnetic circuit gap is avoided, and therefore the electromagnetic driving device with a large stroke is realized. For example, in the chinese patent application No. 201010175164.X, an energized hollow coil is used to exert an electromagnetic force on a permanent magnet, and an open magnetic circuit system is used, so that a large stroke can be generated, but the structure is complicated, a position detection sensor and precise power control need to be added, the relative position between the coil and the moving magnet needs to be detected or judged at any time during the movement process, and then the coil to be energized and the energizing direction are determined according to a certain principle.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a drive balanced long stroke electromagnetic drive device of power to solve the above-mentioned one or more technical problem who exists. The device of the utility model can realize a very large stroke without position detection and accurate power control, and the stroke can be increased by increasing the coil, so that the reliability is stronger; a balanced electromagnetic force can be provided over a large stroke range.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model discloses a drive balanced long stroke electromagnetic drive device of power, include:
the device comprises a shell, wherein n conductive sliding contact plates are fixedly arranged on the inner wall of the shell along the axis direction, n sheet-shaped coils are fixedly arranged on the outer wall of the shell along the axis direction, and n is more than or equal to 2; the n conductive sliding contact plates are sequentially and correspondingly electrically connected with the n sheet-shaped coils; in the n sheet coils, adjacent sheet coils are electrically connected in an end-to-end manner;
the moving magnet can be arranged in the shell and can only slide along the axial direction of the shell; two ends of the moving magnet are respectively fixedly provided with a carbon brush, and the two carbon brushes are respectively used for being electrically connected with two poles of a power supply; the two carbon brushes are insulated from each other and are respectively contacted with different conductive sliding contact plates to realize electric connection;
wherein the shell is made of a non-magnetic material; the conductive sliding contact plate and the carbon brush are made of nonmagnetic materials;
the winding direction of the sheet coil meets the condition that the current flow directions of all the electrified sheet coils in the same current loop are the same;
the geometric center of the sheet coil and the conductive sliding contact plate connected with the sheet coil has a preset dislocation distance in the axis direction of the shell; the dislocation distance satisfies: the moving magnet slides to any position, and the electromagnetic field generated by the electrified sheet coil and the geometric center of the magnetic field of the moving magnet are always staggered in the same direction, so that the moving magnet always moves under the electromagnetic thrust or pull force in the same direction.
The utility model has the further improvement that the conductive sliding contact plate is embedded or attached on the inner wall of the shell and is arranged at one side of the inner wall of the shell along the axial direction of the shell; the conductive sliding contact plates are arranged at intervals according to a preset interval and are insulated from each other; the inner side surfaces of the n conductive sliding contact plates form a slideway along the axis direction of the shell, and the slideway is used for realizing sequential contact with the carbon brushes;
the conductive sliding contact plate directly penetrates through the outer wall of the shell or penetrates through the outer wall of the shell through a protrusion on the outer side face of the conductive sliding contact plate, and is used for achieving electrical connection with the sheet coil.
The utility model discloses a further improvement lies in, the thickness dimension of slice coil equals with the distance between the central point of two adjacent electrically conductive wiping boards.
The utility model discloses a further improvement lies in, moving magnet is the neodymium iron boron permanent magnet.
The utility model discloses a further improvement lies in, still includes: the two poles of the direct current power supply are respectively connected with the two carbon brushes through cables; the magnitude and the direction of the output current of the direct current power supply are adjustable.
The utility model is further improved in that the cable is a spring cable; alternatively, the cable is wound by an elastic take-up rod.
The utility model discloses a further improvement lies in, still includes: the limiting block is used for limiting the maximum movement position of the movable magnet and ensuring that the carbon brush is always in contact with the conductive sliding contact plate; the limiting block is made of soft materials.
The utility model discloses a further improvement lies in, still includes: the output piece is fixedly arranged on the movable magnet.
The utility model discloses a further improvement lies in, the casing internal fixation is provided with slide bar or spout, move magnet can just only follow the gliding setting of casing axis direction in on slide bar or the spout.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a large-stroke electromagnetic driving device with balanced driving force, which can realize a large stroke without position detection and accurate power control, can increase the stroke by adding a coil, and can provide balanced electromagnetic force in a large stroke range; in the whole moving process of the moving magnet, the position of the geometric center of the electromagnetic field generated by the electric coil and the geometric center of the moving magnet in the axial direction of the shell is unchanged, the distance is also basically unchanged, and under the condition that the strength of the electromagnetic field generated by the electric coil is also basically unchanged, the electromagnetic driving force borne by the moving magnet is also basically balanced and continues to move towards the preset direction; the utility model discloses simple structure, design benefit, control are easy, with low costs, can be applied to various environment, have realistic meaning and good application prospect. Specifically, the method comprises the following steps:
(1) the stroke of the moving magnet is large, the stroke can be designed at will according to requirements, and any large stroke can be obtained as long as the number of the sheet coils is enough;
(2) in the whole movement process of the moving magnet, the provided electromagnetic driving force is basically kept balanced, and the scene of balancing the requirement on output power can be met;
(3) in the moving magnet moving process, the electric sheet coil is synchronously changed, namely, the same sheet coil is electrified for a short time, so that the current can be increased without the problem of overlarge heating caused by the long-time electrification of the coil, and larger electromagnetic driving force output can be obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a large-stroke electromagnetic driving device with balanced driving force according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the magnetic field direction, the geometric center of the magnetic field, the force-receiving direction and the moving direction of the moving magnet according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the magnetic field direction, the geometric center of the magnetic field, the force-receiving direction of the moving magnet, and the moving direction according to another embodiment of the present invention;
fig. 4 is a schematic diagram of the magnetic field direction, the geometric center of the magnetic field, the force-receiving direction of the moving magnet, and the moving direction according to another embodiment of the present invention;
fig. 5 is a schematic diagram of the magnetic field direction, the geometric center of the magnetic field, the force-receiving direction of the moving magnet, and the moving direction according to another embodiment of the present invention;
fig. 6 is a schematic diagram of the magnetic field direction, the geometric center of the magnetic field, the force-receiving direction of the moving magnet, and the moving direction according to another embodiment of the present invention;
in the figure, 1, a housing; 2. a conductive wiping plate;
3. a sheet coil; 31. coil number 1; 32. coil number 2; 33. a coil No. 3; 34. coil number 4; 35. coil No. 5; 36. coil number 6; 37. coil No. 7; 38. coil number 8;
4. a moving magnet; 41. no. 1 moving magnet; 42. no. 2 moving magnet; 43. no. 3 moving magnet; 44. no. 4 moving magnet;
5. a carbon brush; 6. a direct current power supply; 7. a cable; 8. a sliding sleeve; 9. a slide bar; 10. a limiting block; 11. and an output member.
Detailed Description
In order to make the purpose, technical effect and technical solution of the embodiments of the present invention clearer, the following description, with reference to the drawings in the embodiments of the present invention, clearly and completely describes the technical solution in the embodiments of the present invention; obviously, the described embodiments are some of the embodiments of the present invention. Based on the embodiments disclosed in the present invention, other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Referring to fig. 1, a large-stroke electromagnetic driving device with balanced driving force according to an embodiment of the present invention includes: the device comprises a shell, a conductive sliding contact plate, a sheet coil, a moving magnet, a carbon brush, a direct-current power supply, a cable, a sliding sleeve, a sliding rod, a limiting block and an output piece.
The shell is made of non-magnetic materials, and the interior of the shell is of a cavity structure.
The number of the conductive sliding contact plates is n, n is more than or equal to 2, the conductive sliding contact plates are embedded or attached to the inner wall of the shell and are arranged in order on one side of the inner wall of the shell along the axial direction of the shell, and meanwhile, the conductive sliding contact plates directly penetrate through or penetrate through the outer wall of the shell through protrusions on the outer side surfaces of the conductive sliding contact plates, so that the conductive sliding contact plates are electrically communicated with the outside of the shell; specifically, the conductive sliding contact plates are arranged at intervals and are insulated from each other; the inner side surface of the conductive sliding contact plate is flat and smooth, and a smooth slideway along the axis direction of the shell is formed after the conductive sliding contact plate is arranged in order.
The number of the sheet coils is equal to the number n of the conductive sliding contact plates, the sheet coils are sequentially attached to and surround the outside of the shell, adjacent sheet coils are connected end to end and are sequentially connected with the conductive sliding contact plates, and the distance between the thickness of each sheet coil and the center point of each two adjacent conductive sliding contact plates is equal; the winding direction of the sheet coil meets the condition that the current flow directions in all the sheet coils in the same current loop are the same, namely the electromagnetic fields generated by all the sheet coils in the same current loop are the same.
The moving magnet is a permanent magnet with a through hole in the middle, the moving magnet is magnetized along the axis direction, and the sliding sleeve is installed in the through hole of the moving magnet and integrated with the moving magnet to move synchronously.
The carbon brushes are arranged at corresponding positions at two ends of the movable magnet, the two carbon brushes are insulated from each other, a certain distance exists between the two carbon brushes, the two carbon brushes are ensured not to be simultaneously contacted with the same conductive sliding contact plate at any time, and the carbon brushes and the movable magnet are integrated to move synchronously.
The sliding rod is used as a sliding rail and is arranged in the cavity of the shell, the axis of the sliding rod is collinear or parallel with the axis of the shell, and the moving magnet is sleeved on the sliding rod through a sliding sleeve; the cross section of the sliding rod is non-circular, and the cross section of the sliding sleeve corresponds to that of the sliding rod, so that the sliding sleeve, the moving magnet and the carbon brush can only freely move along the axial direction of the shell by taking the sliding rod as the sliding rail and cannot rotate in the shell; or the cross section of the sliding rod is circular, the cross section of the sliding sleeve corresponds to the cross section of the sliding rod, the sliding rod is provided with a positioning rod, a positioning groove is formed in the corresponding position of the sliding sleeve, and the positioning rod is matched with the positioning groove, so that the sliding sleeve, the moving magnet and the carbon brush can only freely move along the axis direction of the shell and cannot rotate in the shell by taking the sliding rod as the sliding rail.
The utility model discloses drive balanced long stroke electromagnetic drive device's of power control method, including following step:
firstly, sequentially numbering n sheet-shaped coils from a starting A end to a tail B end along the axial direction of the shell as L1, L2, …, Li, … and Ln, sequentially numbering n conductive sliding contact plates as P1, P2, …, Pi, … and Pn along the same direction, wherein the geometric centers of the sheet-shaped coils Li and the conductive sliding contact plates Pi have a certain offset distance in the axial direction of the shell, and i is more than or equal to 1 and less than or equal to n;
the specific steps and principles for controlling the motion of the moving magnet are as follows:
(1) connecting the two carbon brushes with two poles of the power supply respectively, and electrifying direct current, wherein the sheet coils Li +1, Li +2, i.. and Li + k are electrified after the carbon brushes are contacted with the conductive sliding contact plate, wherein i is more than or equal to 1, and i + k is more than or equal to 2 and less than or equal to n;
(2) the electric sheet coil Li +1, Li +2, Li, and Li + k jointly generate an electromagnetic field along the axial direction, the geometric center of the electromagnetic field and the geometric center of the movable magnet have a certain dislocation distance along the axial direction of the shell, and the movable magnet moves under the pushing (or pulling) force of the electromagnetic field generated by the electric sheet coil;
(3) in the moving process of the moving magnet, the two carbon brushes also move synchronously, and in the moving process of the two carbon brushes, the conductive sliding contact plates contacted with the two carbon brushes also change synchronously, so that the electric sheet coil also changes synchronously, and the geometric center of an electromagnetic field generated by the electric sheet coil also changes synchronously; in other words, in the whole movement process of the moving magnet, the position of the geometric center of the electromagnetic field generated by the electric sheet coil and the geometric center of the moving magnet in the direction along the axis of the shell is unchanged, the distance is also basically unchanged, and under the condition that the strength of the electromagnetic field generated by the electric coil is also basically unchanged, the electromagnetic driving force borne by the moving magnet is also basically balanced and continues to move towards the preset direction;
(4) judging the electrifying direction of the sheet coil according to the relative position of the geometric center of the electromagnetic field generated by the electrifying coil and the geometric center of the moving magnet and the movement direction of the planned control moving magnet, and controlling the moving magnet to move towards the preset direction;
(5) the moving direction of the moving magnet can be changed by changing the electrifying direction of the current, and the magnitude of the electromagnetic pushing (or pulling) force can be adjusted by adjusting the magnitude of the current (or adjusting the magnitude of the voltage), so that the magnitude of the output force or the moving speed of the moving magnet can be adjusted.
The embodiment of the utility model provides an in, the geometric center of slice coil Li and electrically conductive wiping board Pi is in there is certain dislocation distance in the axis direction of casing, and this dislocation distance will satisfy no matter what position the moving magnet moved, the geometric center of the electromagnetic field that the electric coil produced and the geometric center of moving magnet are following the ascending position of casing axis direction remains unchanged, and its distance should not too near or too far apart from yet, guarantees that the electromagnetism that the electric coil produced pushes away (or draws) the sufficient drive moving magnet of power and continues the motion anytime, and more preferred is that it pushes away (or draws) the power the biggest to make the electromagnetism that the moving magnet received.
In the embodiment of the present invention, the dc power supply can control the current direction, and can adjust the magnitude of the output current (or the magnitude of the output voltage).
In the embodiment of the utility model, the cable is a spring cable or is wound by an elastic storage rod, one end of the cable is connected with the carbon brush, when the carbon brush moves to a distance along with the moving magnet and needs to be elongated, the spring cable is stretched or the cable is pulled out from the elastic storage rod because the pulling force is greater than the storage elastic force; when the carbon brush follower magnet is displaced to the proximal end, the elongated electric wire is retracted due to the retraction elastic force.
In the embodiment of the utility model, two ends of the shell are also provided with limit blocks made of soft materials; the one hand is used for limiting the movement position of the moving magnet, ensuring that the moving magnet cannot be separated from the shell, and ensuring that the two carbon brushes always contact the conductive sliding contact plate, so that a current loop is formed through the flaky coil, and the other hand is used for buffering the moving magnet and avoiding damaging the moving magnet due to movement impact force.
In the embodiment of the utility model, the carbon brush is followed the ascending width of casing axis direction is greater than the interval between two adjacent electrically conductive wiping boards, ensures that the carbon brush can contact with one or two adjacent electrically conductive wiping boards all the time, avoids because of moving to adjacent two electrically conductive wiping boards in the middle of unable and any one electrically conductive wiping board contact.
In the embodiment of the utility model, the carbon brush with the plane of electrically conductive wiping board contact is followed at the carbon brush in casing axis direction motion process, all the time with the smooth slide contact of electrically conductive wiping board medial surface formation to along slide smooth slip.
The embodiment of the utility model provides an in, move magnet with the slide bar is as the slide rail, also can trade another kind of mode, promptly set up two spouts on the shells inner wall, move and set up two slide bars on the magnet, the slide bar can slide in the spout that corresponds to make magnet can only follow casing axis direction free motion, can't rotate in the casing.
The embodiment of the utility model provides an in, output can the both ends of moving magnet are all installed, perhaps only are in the one end installation of moving magnet, will move the motion form or the power output of magnet through output.
The embodiment of the utility model provides an in casing, electrically conductive wiping board, carbon brush, cable, sliding sleeve, slide bar, stopper, output spare all are made for no magnetic material. The sliding rod and the sliding groove are made of nonmagnetic materials.
The utility model discloses the advantage that device has includes:
(1) the stroke of the moving magnet is large, the stroke can be designed at will according to requirements, and any large stroke can be obtained as long as the number of the sheet coils is enough;
(2) in the whole movement process of the moving magnet, the provided electromagnetic driving force is basically kept balanced, and the scene of balancing the requirement on output power can be met;
(3) in the moving process of the moving magnet, the electric sheet-shaped coils are synchronously changed, namely, the same sheet-shaped coil is electrified for a short time, so that the current can be properly increased without overlarge heating caused by the long-time electrification of the coil, and larger electromagnetic driving force output can be obtained;
(4) the utility model discloses simple structure, design benefit, control are easy, with low costs, can be applied to various environment.
Example 1
The utility model discloses drive balanced long stroke electromagnetic drive device of power that constitutes by 1 moving magnet, as shown in fig. 1, include: the shell body 1 is internally provided with a cavity structure, a plurality of conductive sliding contact plates 2 are embedded in the inner wall of the shell body 1 and are arranged in order on one side of the inner wall of the shell body 1 along the axis direction of the shell body 1, meanwhile, the conductive sliding contact plates 2 penetrate through the outer wall of the shell body 1, so that the conductive sliding contact plates 2 are communicated with the outside of the shell body 1 in an electric mode, and the conductive sliding contact plates 2 are arranged at equal intervals and are insulated from each other; the inner side surface of the conductive sliding contact plate 2 is flat and smooth, and a smooth slideway along the axis direction of the shell 1 is formed after the conductive sliding contact plate is regularly arranged.
The plurality of sheet coils 3 are sequentially attached to and surround the outside of the shell 1, the adjacent sheet coils 3 are connected end to end and are sequentially connected with the conductive sliding contact plates 2, and the distance between the thickness of each sheet coil 3 and the center point of each two adjacent conductive sliding contact plates 2 is equal; the winding direction of the sheet coil 3 satisfies that the current flow directions in all the electrified sheet coils 3 in the same current loop are the same, namely that the electromagnetic fields generated by all the electrified sheet coils 3 in the same current loop have the same direction.
The moving magnet 4 is a neodymium iron boron permanent magnet with a through hole in the middle, the moving magnet 4 is magnetized along the axis direction, and the sliding sleeve 8 is installed in the through hole of the moving magnet 4 and is integrated with the moving magnet 4 to move synchronously; the two carbon brushes 5 are arranged at the corresponding positions of the two ends of the movable magnet 4, the two carbon brushes 5 are insulated from each other and have a certain distance, so that the two carbon brushes 5 are ensured not to be simultaneously contacted with the same conductive sliding contact plate 2 at any time, and the carbon brushes 5 and the movable magnet 4 are integrated and move synchronously.
The sliding rod 9 is used as a sliding rail and is arranged in the cavity of the shell 1, the axis of the sliding rod 9 is collinear or parallel with the axis of the shell 1, and the moving magnet 4 is sleeved on the sliding rod 9 through a sliding sleeve 8; the cross section of the sliding rod 9 is non-circular, the cross section of the sliding sleeve 8 corresponds to the cross section of the sliding rod 9, so that the sliding sleeve 8, the moving magnet 4 and the carbon brush 5 can only freely move along the axial direction of the shell 1 by using the sliding rod 9 as a sliding rail and cannot rotate in the shell 1.
The direct current power supply 6 can control the current direction and adjust the magnitude of the output current (or the magnitude of the output voltage); the cable 7 is a spring cable, one end of the cable is connected with the carbon brush 5, the other end of the cable is connected with the direct current power supply 6, and the cable 7 is long enough and cannot limit the movement of the carbon brush 5.
In specific implementation, the width of the carbon brush 5 in the axial direction of the housing 1 is greater than the interval between two adjacent conductive sliding contact plates 2, so that the carbon brush 5 can be always in contact with one or two adjacent conductive sliding contact plates 2, and the condition that the carbon brush cannot be in contact with any conductive sliding contact plate 2 when the carbon brush moves to the middle of two adjacent conductive sliding contact plates 2 is avoided; and the plane of the carbon brush 5 contacted with the conductive sliding contact plate 2 is always contacted with the smooth slideway formed on the inner side surface of the conductive sliding contact plate 2 and slides smoothly along the slideway in the process that the carbon brush 5 moves along the axis direction of the shell.
The shell 1, the conductive sliding contact plate 2, the carbon brush 5, the cable 7, the sliding sleeve 8, the sliding rod 9, the limiting block 10 and the output part 11 are all made of nonmagnetic materials.
Referring to fig. 2 to 4, the exercise process in the embodiment of the present invention includes: firstly, n sheet-shaped coils 3 are numbered as 31, 32, …, 3i, … and 3n in sequence from a starting end A to a tail end B along the axial direction of the shell 1, n conductive sliding contact plates 2 are numbered as 21, 22, …, 2i, … and 2n in sequence along the same direction, and the geometric centers of the sheet-shaped coils 3i and the conductive sliding contact plates 2i have a certain offset distance (the distance is set as the distance between the center points of two adjacent conductive sliding contact plates 2 in the example) in the axial direction of the shell 1, wherein i is more than or equal to 1 and less than or equal to n; illustratively, the No. 1 coil 31, the No. 2 coil 32, the No. 3 coil 33, the No. 4 coil 34, the No. 5 coil 35, the No. 6 coil 36, the No. 7 coil 37, and the No. 8 coil 38.
The specific steps and principles for controlling the movement of the moving magnet 4 are as follows:
the first stage is as follows: the moving magnet 4 is placed at the end A of the device of the embodiment, two carbon brushes 5 are respectively connected with two poles of a direct current power supply 6, and the carbon brushes 5 are in contact with the conductive sliding contact plate 2, so that the No. 2 coil 32, the No. 3 coil 33, the No. 4 coil 34, the No. 5 coil 35, the No. 6 coil 36 and the No. 7 coil 37 are electrified to form a current loop;
and a second stage: the electric sheet coils jointly generate an electromagnetic field along the axial direction, the geometric center of the electromagnetic field is in the direction of the end B of the geometric center of the movable magnet 4, a certain dislocation distance exists, and the movable magnet 4 can move towards the end B under the action of the tensile force of the electromagnetic field jointly generated by the electric sheet coils at the moment, wherein FIG. 2 is a schematic diagram of the magnetic field direction, the geometric center of the magnetic field, the stress direction and the movement direction of the movable magnet at the stage;
and a third stage: the moving magnet 4 moves towards the end B under the action of electromagnetic force, the two carbon brushes 5 also move synchronously, and the conductive sliding contact plate 2 in contact with the carbon brushes 5 changes, so that the electric sheet-shaped coil 3 also changes, as shown in fig. 3, at this stage, the coil No. 3, the coil No. 4, the coil No. 5, the coil No. 6, the coil No. 7 and the coil No. 3 33 are electrified to form a current loop; the electric sheet coils jointly generate an electromagnetic field along the axial direction, the geometric center of the electromagnetic field is in the direction of the end B of the geometric center of the movable magnet 4, a certain dislocation distance exists, at the moment, the movable magnet 4 can continuously move to the end B under the action of the tensile force of the electromagnetic field jointly generated by the electric sheet coils, and fig. 3 is a schematic diagram of the magnetic field direction, the geometric center of the magnetic field, the stress direction of the movable magnet and the moving direction at the stage; according to the process, in the whole moving process of the moving magnet 4, the position and the distance of the geometric center of the electromagnetic field generated by the electric coil 3 and the geometric center of the moving magnet 4 in the axial direction of the shell 1 are unchanged, and under the condition that the strength of the electromagnetic field generated by the electric coil 3 is also basically unchanged, the electromagnetic driving force applied to the moving magnet 4 is also basically balanced and continues to move to the end B;
a fourth stage: when the moving magnet 4 moves to the tail end B end of the device, the limiting block 10 at the end B performs buffering and limiting, and the moving magnet 4 stays at the end B;
the fifth stage: if the moving magnet 4 is controlled to move towards the initial end a of the device of this embodiment, the direction of the applied force of the moving magnet 4 is changed by changing the direction of the output current of the dc power supply 6, that is, changing the direction of the electromagnetic field of the electric sheet coil 3, so as to make the moving magnet move towards the end a of the device of this embodiment, and fig. 4 is a schematic diagram of the magnetic field direction, the magnetic field center position, the applied force direction of the moving magnet, and the moving direction at this stage;
the above is a specific implementation procedure of this embodiment, and the magnitude of the electromagnetic pushing (or pulling) force can be adjusted by adjusting the magnitude of the current (or the magnitude of the voltage) of the dc power supply 6, so as to adjust the magnitude of the output force or the movement speed of the moving magnet 4.
Example 2
The embodiment of the utility model provides a drive power balanced long-stroke electromagnetic drive device who comprises 2 moving magnets, this embodiment and embodiment 1's difference lie in that the moving magnet is 2, and other parts are the same with embodiment 1.
Referring to fig. 5, in the present embodiment, the magnetic poles of the moving magnets No. 1, No. 2 are installed on the sliding sleeve 8 in opposite directions, and the position is fixed and the moving magnets move synchronously, and the control method and the moving process of the present embodiment are the same as those of embodiment 1. Fig. 5 is a schematic diagram of the position, the magnetic field direction, the geometric center of the magnetic field, the force direction and the movement direction of the moving magnet when the moving magnet No. 1 41 is at the end a of the device of the embodiment and is ready to move to the end B.
Compared with embodiment 1, the present embodiment adds an additional moving magnet, so that the resultant force of the electromagnetic pushing (or pulling) force received by the moving magnet is increased, and a larger force or speed is output to the outside through the output member 11.
Example 3
The utility model discloses a drive balanced long stroke electromagnetic drive device of power that constitutes by 4 moving magnets, the difference of this embodiment and embodiment 2 lies in that moving magnets and carbon brush are the twice of embodiment 2 in this embodiment, and other parts are the same with embodiment 2. In this embodiment, the magnetic pole directions of the No. 1 moving magnet 41 and the No. 2 moving magnet 42 are opposite, the magnetic pole directions of the No. 3 moving magnet 43 and the No. 2 moving magnet 42 are the same, the magnetic pole directions of the No. 4 moving magnet 44 and the No. 3 moving magnet 43 are opposite, and the 4 moving magnets are all installed on the sliding sleeve 8 and are fixed in position and move synchronously. The control method and the movement process of this embodiment are the same as those of embodiment 2, and fig. 6 is a schematic diagram of the position, the magnetic field direction, the geometric center of the magnetic field, the force receiving direction and the movement direction of the moving magnet when the moving magnet No. 1 41 is at the end a of the device of this embodiment and is ready to move to the end B.
Compared with the embodiment 2, the present embodiment additionally adds a group of moving magnets, so that the resultant force of electromagnetic pushing (or pulling) force received by the moving magnets is doubled, and a larger force is output to the outside through the output member 11, which is suitable for an application scenario requiring large driving force output.
The number of the moving magnets in the above embodiments is only an example, and does not limit the number of the moving magnets, and the number of the moving magnets may be changed as needed.
To sum up, the utility model discloses a drive balanced long stroke electromagnetic drive device of power includes casing, slice coil, electrically conductive wiping board, moving magnet, carbon brush. The slice coil is hugged closely in proper order and encircles in the casing outside, adjacent slice coil end to end and in proper order with electrically conductive wiping board connects, the axis direction synchronous motion can be followed in the casing to the carbon brush with moving magnet, and two carbon brushes contact with electrically conductive wiping board, through the coil formation electric current return circuit, utilize to have the dislocation of same direction all the time in the electromagnetic field that electric coil produced and the geometric center that moves the magnet magnetic field for moving magnet receives the electromagnetism of a same direction all the time and pushes away (or pull) the power and move, changes the direction of current and can change moving magnet's direction of motion. The utility model discloses simple structure, design benefit, control are easy, increase the coil and can increase the stroke, solved that traditional electromagnetic drive device stroke is short, perhaps need position detection and accurate complicated control to realize big stroke scheduling problem, have very high implementation value.
The above embodiments are only used to illustrate the technical solution of the present invention and not to limit the same, although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify or equally replace the specific embodiments of the present invention, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention is within the protection scope of the claims of the present invention.
Claims (9)
1. A large-stroke electromagnetic drive device with balanced drive force, comprising:
the device comprises a shell (1), wherein n conductive sliding contact plates (2) are fixedly arranged on the inner wall of the shell (1) along the axis direction, n sheet coils (3) are fixedly arranged on the outer wall of the shell (1) along the axis direction, and n is more than or equal to 2; the n conductive sliding contact plates (2) are sequentially and correspondingly electrically connected with the n sheet-shaped coils (3); in the n sheet-shaped coils (3), the adjacent sheet-shaped coils (3) are electrically connected in an end-to-end manner;
the moving magnet (4), the said moving magnet (4) can be and only can be along the said body (1) axial direction setting in the said body (1) slidably; two ends of the moving magnet (4) are respectively fixedly provided with a carbon brush (5), and the two carbon brushes (5) are respectively used for being electrically connected with two poles of a power supply; the two carbon brushes (5) are insulated from each other, and the two carbon brushes (5) are respectively contacted with different conductive sliding contact plates (2) to realize electric connection;
the winding directions of the n sheet-shaped coils (3) meet the condition that the current flow directions of all the electrified sheet-shaped coils (3) in the same current loop are the same;
a preset dislocation distance exists in the axial direction of the shell (1) at the geometric center of the conductive sliding contact plate (2) connected with the sheet coil (3); the dislocation distance satisfies: the moving magnet (4) slides to any position, and the electromagnetic field generated by the electrified sheet coil (3) and the geometric center of the magnetic field of the moving magnet (4) are always staggered in the same direction, so that the moving magnet (4) always receives the electromagnetic thrust or tension in the same direction.
2. The large-stroke electromagnetic driving device with balanced driving force according to claim 1, wherein the conductive sliding contact plate (2) is embedded or attached to the inner wall of the shell (1) and is arranged along the axial direction of the shell (1) on one side of the inner wall of the shell (1); the conductive sliding contact plates (2) are arranged at preset intervals at equal intervals and are insulated from each other; the inner side surfaces of the n conductive sliding contact plates (2) form a slideway along the axial direction of the shell (1) for realizing the sequential contact with the carbon brushes (5);
the conductive sliding contact plate (2) directly penetrates through the outer wall of the shell (1) or penetrates through the outer wall of the shell through a protrusion on the outer side face of the conductive sliding contact plate, and is used for achieving electric connection with the sheet coil (3).
3. A driving force balanced large stroke electromagnetic driving device according to claim 1, characterized in that the thickness dimension of the sheet coil (3) is equal to the distance between the center points of two adjacent conductive sliding contact plates (2);
the width of the carbon brush (5) along the axial direction of the shell (1) is larger than the interval between two adjacent conductive sliding contact plates (2).
4. The large-stroke electromagnetic driving device with balanced driving force according to claim 1, wherein the moving magnet (4) is a neodymium iron boron permanent magnet; the moving magnet (4) is magnetized along the axial direction; the number of the moving magnets (4) is 1 or more.
5. A large-stroke electromagnetic drive with balanced drive force as claimed in claim 1 further comprising:
the two poles of the direct current power supply (6) are respectively connected with the two carbon brushes (5) through cables; the size and the direction of the output current of the direct current power supply (6) are adjustable.
6. A driving force balanced large stroke electromagnetic drive as claimed in claim 5 wherein said cable (7) is a spring cable;
alternatively, the cable (7) is wound by an elastic storage rod.
7. A large-stroke electromagnetic drive with balanced drive force as claimed in claim 1 further comprising:
the limiting block (10), the limiting block (10) is used for limiting the maximum movement position of the movable magnet (4) and ensuring that the carbon brush (5) is always contacted with the conductive sliding contact plate (2); the limiting block (10) is made of soft materials.
8. A large-stroke electromagnetic drive with balanced drive force as claimed in claim 1 further comprising:
the output piece (11), output piece (11) fixed set up in moving magnet (4).
9. The large-stroke electromagnetic driving device with balanced driving force according to claim 1, characterized in that a sliding rod or a sliding chute is fixedly arranged in the housing (1), and the movable magnet (4) is arranged on the sliding rod or the sliding chute and can slide only along the axial direction of the housing (1); the axis of the sliding rod or the sliding chute is collinear with or parallel to the axis of the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023070495.5U CN213717823U (en) | 2020-12-18 | 2020-12-18 | Large-stroke electromagnetic driving device with balanced driving force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023070495.5U CN213717823U (en) | 2020-12-18 | 2020-12-18 | Large-stroke electromagnetic driving device with balanced driving force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213717823U true CN213717823U (en) | 2021-07-16 |
Family
ID=76789986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023070495.5U Active CN213717823U (en) | 2020-12-18 | 2020-12-18 | Large-stroke electromagnetic driving device with balanced driving force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213717823U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688532A (en) * | 2020-12-18 | 2021-04-20 | 江先明 | Large-stroke electromagnetic driving device with balanced driving force and control method thereof |
-
2020
- 2020-12-18 CN CN202023070495.5U patent/CN213717823U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688532A (en) * | 2020-12-18 | 2021-04-20 | 江先明 | Large-stroke electromagnetic driving device with balanced driving force and control method thereof |
| CN112688532B (en) * | 2020-12-18 | 2024-06-25 | 江先明 | Large-stroke electromagnetic driving device with balanced driving force and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108306454B (en) | Power generation device | |
| CN208077717U (en) | A kind of ultrahigh speed electromagnet and component | |
| EP1158547A3 (en) | Electromagnetic actuator and composite electro-magnetic actuator apparatus | |
| CN213717823U (en) | Large-stroke electromagnetic driving device with balanced driving force | |
| CN104813570A (en) | Permanent magnet power generating device | |
| CN202839195U (en) | Novel electromagnetic driving mechanism | |
| CN106042725B (en) | A kind of electronic paintbrush | |
| CN103189939B (en) | There is the magnetic actuator of non magnetic insert | |
| CN112688532A (en) | Large-stroke electromagnetic driving device with balanced driving force and control method thereof | |
| AU2016404484B2 (en) | Electric motor structure | |
| US11205546B2 (en) | Switch | |
| CN106685176B (en) | A kind of permanent-magnetism linear motor with compensating module | |
| CN202339850U (en) | Magnetoelectric stroke-controlled power device | |
| CN204088214U (en) | A kind of magnetic keeps D.C. contactor | |
| CN212542074U (en) | Novel direct current electromagnetic mechanism | |
| CN201503828U (en) | Electromagnetic trip | |
| US8120225B2 (en) | External split field generator | |
| CN110857717A (en) | Electromagnetic spring | |
| CN205081708U (en) | Magnetic driver | |
| RU2609524C1 (en) | Multiphase motor-generator with magnetic rotor | |
| CN110071616A (en) | A kind of linear flux compression power generation mechanism and the generator including it | |
| CN208873690U (en) | A kind of calutron with permanent magnet | |
| CN214850925U (en) | Bidirectional movement electromagnetic power generation structure | |
| KR100692388B1 (en) | Single-phase linear motor | |
| KR101578161B1 (en) | Vibration actuator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |