Linear Motors

Abstract

The present invention provides a linear motor, comprising a moving part (1), a magnetoelectric field configuration change body, a first magnetoelectric body pair (602), and a second magnetoelectric body pair (603); in the axial direction of the moving part (1), the first magnetoelectric body pair (602) and the second magnetoelectric body pair (603) are respectively adjacent to the two sides of a variable length rotating body (601); the variable length rotating body (601) can change its length in the axial direction of the moving part (1) by rotating, thereby changing the distance between the first magnetoelectric body pair (602) and the second magnetoelectric body pair (603). The present invention has a reasonable structure and is easy to maintain. It is a new type of linear motor.

Description

Technical Field

[0001] The present invention relates to the field of motors, and in particular to linear motors. Background Art

[0002] A linear motor is a kind of machine that directly converts electrical energy into mechanical energy of linear motion. A variety of clamping mechanisms have been disclosed in the prior art. For example, those skilled in the art can refer to "Electromagnetic clamping mechanism and linear drive device and combination thereof" [Application No. 201410387626.2, Publication No. CN104167957A], which discloses an electromagnetic clamping mechanism, including an electromagnet, a permanent magnet and a deformable body, wherein the magnetic poles of the permanent magnet are in direct contact or close to the magnetic poles of the electromagnet to form a control magnetic circuit, and the deformable body is rigidly connected to the permanent magnet; the permanent magnet moves relative to the electromagnet under the drive of the magnetic field of the control magnetic circuit, and drives the deformable body to deform, thereby realizing clamping, locking and releasing. Those skilled in the art may also refer to patent documents such as “Electromagnetic-permanent magnet clamping mechanism for linear motor” [application number 201020603794.8, publication number CN201869079U] and “Electromagnetic clamping mechanism and stick-slip motion linear motor thereof” [application number 201020603955.3, publication number CN201887641U] to realize the clamping mechanism, and may also refer to “Electromagnetic adaptive clamping clamping device and combined clamping clamping device” [application number 201610038564.3, publication number CN105527840A]. For example, based on the "electromagnetic clamping mechanism and its linear drive device and combination", the deformable body in the clamping mechanism can be locked against the locked object as an output member, based on the "electromagnetic-permanent magnet clamping mechanism for linear motor", the output rod in the clamping mechanism can be locked against the locked object as an output member, based on the "electromagnetic clamping mechanism and its stick-slip motion linear motor", the output shaft in the clamping mechanism can be locked against the locked object as an output member, and based on the "electromagnetic adaptive clamping device and combined clamping clamping device", the clamping component in the clamping mechanism can be tightened and relaxed to clamp and lock the locked object as an output member. Those skilled in the art can also refer to the "swinging long-stroke motion device and multi-dimensional motor" [application number 201610351263.6, publication number CN207321084U] to realize a clamping mechanism with a wide to narrow channel. Summary of the invention

[0003] In view of the defects in the prior art, an object of the present invention is to provide a linear motor.

[0004] A linear motor provided according to the present invention includes a moving part 1, a magneto-electric field configuration change body, a first magneto-electric body pair 602, and a second magneto-electric body pair 603;

[0005] In the axial direction of the moving part 1, the first magnetoelectric pair 602 and the second magnetoelectric pair 603 are respectively adjacent to the two sides of the variable length rotating body 601;

[0006] The variable length rotating body 601 can change its length in the axial direction of the moving part 1 by rotating, thereby changing the distance between the first magnetoelectric body pair 602 and the second magnetoelectric body pair 603;

[0007] When the variable length rotating body 601 rotates to the first position, the first magnetoelectric pair 602 releases the moving part 1, and the second magnetoelectric pair 603 releases the moving part 1;

[0008] When the variable length rotating body 601 rotates to the second position, the magnet at one end of the variable length rotating body 601 drives the first magnetoelectric pair 602 to release the moving part 1 , and the magnet at the other end of the variable length rotating body 601 drives the second magnetoelectric pair 603 to lock the moving part 1 .

[0009] Preferably, the magnetic and electric field configuration change body comprises a variable length rotating body 601;

[0010] The first magnetoelectric pair 602 and the second magnetoelectric pair 603 both include magnetoelectric pairs with the same poles facing each other or with different poles facing each other, wherein the relative magnetoelectric pairs can be repelled to release the moving part 1 , and the relative magnetoelectric pairs can be attracted to lock the moving part 1 .

[0011] Preferably, the linear motor further comprises: an elastic housing 604;

[0012] The variable length rotating body 601 , the first magnetoelectric body pair 602 , and the second magnetoelectric body pair 603 are all located in the elastic shell 604 ; under the constraint of the elastic shell 604 , the first magnetoelectric body pair 602 and the second magnetoelectric body pair 603 are respectively adjacent to the two sides of the variable length rotating body 601 .

[0013] Preferably, the first magnetoelectric pair 602 and the second magnetoelectric pair 603 both include a ferromagnetic connector 605; the magnetoelectric pairs with the same poles facing each other are slidably arranged on the ferromagnetic connector 605; the ferromagnetic connector 605 is attracted by the magnets at both ends of the variable length rotating body 601, so that the first magnetoelectric pair 602 and the second magnetoelectric pair 603 are respectively adjacent to the two sides of the variable length rotating body 601.

[0014] Preferably, the linear motor further comprises: a driving device 606;

[0015] The variable length rotating body 601 rotates under the drive of the driving device 606;

[0016] The driving device 606 comprises:

[0017] - A permanent magnet capable of approaching and moving away from the variable length rotor 601;

[0018] -Electromagnet.

[0019] Preferably, under the driving of the driving device 606,

[0020] When the variable length rotating body 601 rotates to the third position, the first magnetoelectric pair 602 releases the moving part 1, and the second magnetoelectric pair 603 releases the moving part 1; between the first position and the third position, the variable length rotating body 601 has the same posture and the positions of the two ends are interchanged;

[0021] When the variable-length rotating body 601 rotates to the fourth position, the magnet at one end of the variable-length rotating body 601 drives the first magnetoelectric pair 602 to lock the moving part 1, and the magnet at the other end of the variable-length rotating body 601 drives the second magnetoelectric pair 603 to release the moving part 1; between the second position and the fourth position, the posture of the variable-length rotating body 601 is consistent and the positions of the two ends are interchanged.

[0022] Preferably, the magnetoelectric pair is brought closer together by thermal expansion to lock the moving part, and is moved away from each other to release the moving part.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention has a reasonable structure and is easy to maintain. It is a new type of linear motor.

[0025] 2. The inventive concept of the present invention is ingenious. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 It is a schematic diagram of the structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the structure of the present invention.

[0029] Figure 3 It is a schematic diagram of the structure of the present invention.

[0030] Figure 4 It is a schematic diagram of the structure of the present invention.

[0031] Figure 5 It is a schematic diagram of the structure of the present invention.

[0032] Figure 6 It is a schematic diagram of the structure of the present invention.

[0033] Figure 7 It is a schematic diagram of the structure of the present invention.

[0034] Figure 8 It is a schematic diagram of the structure of the present invention.

[0035] The figure shows:

[0036] DETAILED DESCRIPTION

[0037] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0038] Basic Embodiment B4

[0039] A linear motor provided according to the present invention comprises: a moving part 1, a magneto-electric field configuration change body, a first magneto-electric body pair 602, and a second magneto-electric body pair 603; the magneto-electric field configuration change body comprises a variable length rotating body 601.

[0040] In the axial direction of the moving part 1, the first magnetoelectric pair 602 and the second magnetoelectric pair 603 are respectively adjacent to the two sides of the variable length rotating body 601;

[0041] The variable length rotating body 601 can change its length in the axial direction of the moving part 1 by rotating, thereby changing the distance between the first magnetoelectric body pair 602 and the second magnetoelectric body pair 603;

[0042] The first magnetoelectric pair 602 and the second magnetoelectric pair 603 both include magnetoelectric pairs with opposite poles or opposite poles, wherein the opposite magnetoelectric pairs can be repelled to release the moving part 1, and the opposite magnetoelectric pairs can be attracted to lock the moving part 1;

[0043] When the variable length rotating body 601 rotates to the first position, the first magnetoelectric pair 602 releases the moving part 1, and the second magnetoelectric pair 603 releases the moving part 1;

[0044] When the variable length rotating body 601 rotates to the second position, the magnet at one end of the variable length rotating body 601 drives the first magnetoelectric pair 602 to release the moving part 1 , and the magnet at the other end of the variable length rotating body 601 drives the second magnetoelectric pair 603 to lock the moving part 1 .

[0045] The magnetic and electric field configuration change body includes a magnetic field configuration change body and / or an electric field configuration change body, such as an electrostatic configuration change body.

[0046] The magneto-electric pair includes a magnetic pair and / or an electric pair.

[0047] Working principle:

[0048] Under the action of magnetic energy, the size of the magnetic field configuration change body in at least one direction changes and / or the applied magnetic field also changes. The size changes, thereby changing the output of the mechanical driving force; the applied magnetic field changes, thereby changing the output of the magnetic force.

[0049] like Figure 1 As shown, the three sub-figures in the upper, middle and lower parts respectively show the structural schematic diagrams when the variable length rotating body 601 is in the first position, the second position and the first position, wherein the variable length rotating body 601 rotates clockwise from the first position to the second position, and then rotates counterclockwise from the second position to the first position.

[0050] Step A: When the variable length rotating body 601 is at the first position, the first magnetoelectric pair 602 releases the moving part 1, and the second magnetoelectric pair 603 releases the moving part 1; the moving part 1 can be released to move in two directions relative to each other;

[0051] Step B: When the variable length rotating body 601 rotates from the first position to the second position driven by magnetic energy or mechanical energy, the magnet at one end of the variable length rotating body 601 drives the first magnetoelectric pair 602 to release the moving part 1, and the magnet at the other end of the variable length rotating body 601 drives the second magnetoelectric pair 603 to lock the moving part 1. At the same time, in terms of size, when the variable length rotating body 601 rotates from the first position to the second position, the distance between the first magnetoelectric pair 602 and the second magnetoelectric pair 603 increases. Since the second magnetoelectric pair 603 has locked the moving part 1, in order to adapt to the increasing trend of the distance, the first magnetoelectric pair 602 moves to Figure 1 The movement distance of the middle left side is X1;

[0052] Step C: When the variable length rotating body 601 rotates from the second position to the first position driven by magnetic energy or mechanical energy, the first magnetoelectric pair 602 releases the moving part 1, and the second magnetoelectric pair 603 releases the moving part 1, so the first locking mechanism 802 and the second locking mechanism 803 will move closer to each other.

[0053] By executing step A, step B, and step C in sequence, the first magnetoelectric pair 602 can be advanced a distance X, where X=1 / 2X1.

[0054] By repeatedly performing steps A, B, and C, long-stroke motion can be achieved.

[0055] The present invention will be described in more detail below through preferred examples.

[0056] Example B41

[0057] like Figure 1 Said linear motor further comprises: an elastic housing 604;

[0058] The variable length rotating body 601 , the first magnetoelectric body pair 602 , and the second magnetoelectric body pair 603 are all located in the elastic shell 604 ; under the constraint of the elastic shell 604 , the first magnetoelectric body pair 602 and the second magnetoelectric body pair 603 are respectively adjacent to the two sides of the variable length rotating body 601 .

[0059] In a further preferred example, the first magnetoelectric pair 602 and the second magnetoelectric pair 603 both include a ferromagnetic connector 605; the magnetoelectric pairs with the same poles facing each other are slidably arranged on the ferromagnetic connector 605; the ferromagnetic connector 605 is attracted by the magnets at both ends of the variable length rotating body 601, so that the first magnetoelectric pair 602 and the second magnetoelectric pair 603 are respectively adjacent to the two sides of the variable length rotating body 601.

[0060] In a variation, the elastic housing 604 or the ferromagnetic connector 605 may be omitted.

[0061] In a variation, the moving part 1 is fixed, or the elastic housing 604 is fixed.

[0062] like Figure 2 As shown, Figure 1 Examples of changes, Figure 2 The movement direction of the middle elastic shell 604 is rightward.

[0063] like Figure 3 , Figure 4 As shown, they correspond to Figure 2 , Figure 1 The variation is that the elastic housing 604 is fixed and the moving part 1 moves. However, the moving distance of a single step is X.

[0064] Example B42

[0065] like Figure 5 As shown, the linear motor further includes: a driving device 606;

[0066] The variable length rotating body 601 rotates under the drive of the driving device 606;

[0067] The driving device 606 comprises:

[0068] - A permanent magnet capable of approaching and moving away from the variable length rotor 601;

[0069] -Electromagnet.

[0070] Example B43

[0071] When the variable length rotating body 601 rotates to the third position under the drive of the driving device 606, the first magnetoelectric pair 602 releases the moving part 1, and the second magnetoelectric pair 603 releases the moving part 1. Between the first position and the third position, the variable length rotating body 601 has the same posture and the positions of the two ends are interchanged.

[0072] When the variable length rotating body 601 rotates to the fourth position, the magnet at one end of the variable length rotating body 601 drives the first magnetoelectric pair 602 to lock the moving part 1, and the magnet at the other end of the variable length rotating body 601 drives the second magnetoelectric pair 603 to release the moving part 1. Between the second position and the fourth position, the variable length rotating body 601 has the same posture and the positions of the two ends are interchanged.

[0073] Combination Figure 5 , Figure 6 As shown, the driving device 606 is displaceable. Under the attraction of the driving device 606, the S pole of the variable length rotating body 601 will be attracted from the right to the top position, and then the driving device 606 will be displaced to the left, and the S pole will continue to rotate to the left, and then the current direction of the electromagnet in the driving device 606 will change, so that the S pole is driven to move downward by repulsion, thereby realizing the 90 degree or greater flip of the variable length rotating body 601. In this way, combined with Figure 1 Come and see, Figure 1 The elastic housing 805 shown in the figure moves only to the left, and when the lengthened rotating body 60 is turned over by 190 degrees or more than 90 degrees, such as 180 degrees, the moving direction can be changed to rightward, so that the present invention can switch between two directions.

[0074] Example B44

[0075] like Figure 7 , Figure 8 As shown, the magnet pair can support the inner wall of the pipe after being separated, for example, directly or through an elastic housing.

[0076] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0077] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A linear motor, characterized in that: It comprises a moving part (1), a magneto-electric field configuration changing body, a first magneto-electric body pair (602), and a second magneto-electric body pair (603); In the axial direction of the moving part (1), the first magnetoelectric pair (602) and the second magnetoelectric pair (603) are respectively located adjacent to two sides of the variable length rotating body (601); The variable length rotating body (601) can change its length in the axial direction of the moving part (1) by rotating, thereby changing the distance between the first magnetoelectric body pair (602) and the second magnetoelectric body pair (603); When the variable length rotating body (601) rotates to a first position, the first magnetoelectric pair (602) releases the moving part (1), and the second magnetoelectric pair (603) releases the moving part (1); When the variable length rotating body (601) rotates to the second position, the magnet at one end of the variable length rotating body (601) drives the first magnetoelectric pair (602) to release the moving part (1), and the magnet at the other end of the variable length rotating body (601) drives the second magnetoelectric pair (603) to lock the moving part (1); The magnetic and electric field configuration changing body comprises a variable length rotating body (601); The first magnetoelectric pair (602) and the second magnetoelectric pair (603) both comprise magnetoelectric pairs with the same or opposite poles, wherein the relative magnetoelectric pairs can be repelled to release the moving part (1), and the relative magnetoelectric pairs can be attracted to lock the moving part (1); The linear motor further comprises: a driving device (606); The variable length rotating body (601) rotates under the drive of the driving device (606); The driving device (606) comprises: - a permanent magnet capable of approaching and moving away from the variable length rotor (601); - an electromagnet; or - electrostatic bodies; Under the drive of the driving device (606), When the variable length rotating body (601) rotates to the third position, the first magnetoelectric pair (602) releases the moving part (1), and the second magnetoelectric pair (603) releases the moving part (1); between the first position and the third position, the variable length rotating body (601) has the same posture and the positions of the two ends are interchanged; When the variable length rotating body (601) rotates to the fourth position, the magnet at one end of the variable length rotating body (601) drives the first magnetoelectric pair (602) to lock the moving part (1), and the magnet at the other end of the variable length rotating body (601) drives the second magnetoelectric pair (603) to release the moving part (1); between the second position and the fourth position, the posture of the variable length rotating body (601) is consistent and the positions of the two ends are interchanged.

2. The linear motor according to claim 1, characterized in that: The linear motor further comprises: an elastic housing (604); The variable length rotating body (601), the first magnetoelectric body pair (602), and the second magnetoelectric body pair (603) are all located in the elastic shell (604); under the constraint of the elastic shell (604), the first magnetoelectric body pair (602) and the second magnetoelectric body pair (603) are respectively located in close proximity to the two sides of the variable length rotating body (601).

3. The linear motor according to claim 1, characterized in that: The first magnetoelectric pair (602) and the second magnetoelectric pair (603) both comprise a ferromagnetic connector (605); the magnetoelectric pairs with opposite poles are slidably arranged on the ferromagnetic connector (605); the ferromagnetic connector (605) is attracted by magnets at both ends of the variable length rotating body (601), so that the first magnetoelectric pair (602) and the second magnetoelectric pair (603) are respectively closely adjacent to the two sides of the variable length rotating body (601).

4. The linear motor according to claim 1, characterized in that: The magnetoelectric pair moves closer to lock the moving part and moves away to release the moving part by thermal expansion.

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