CN111664201B - Magnetic coupling and power mechanism with same - Google Patents
Magnetic coupling and power mechanism with same Download PDFInfo
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- CN111664201B CN111664201B CN202010332138.7A CN202010332138A CN111664201B CN 111664201 B CN111664201 B CN 111664201B CN 202010332138 A CN202010332138 A CN 202010332138A CN 111664201 B CN111664201 B CN 111664201B
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- coupling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
- F16D43/21—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members
- F16D43/213—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with axially applied torque-limiting friction surfaces
- F16D43/215—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with axially applied torque-limiting friction surfaces with flat friction surfaces, e.g. discs
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
- H02K49/108—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element with an axial air gap
Abstract
The invention provides a magnetic coupling and a power mechanism with the same. The magnetic coupling includes: the first part, the second part, first magnetic part and second magnetic part. The first magnetic part is fixedly connected with the first part. The second magnetic part is fixedly connected with the second part. The magnetic coupling is used for connecting a power part and a driven part, when the temperature needs to be reduced in the friction test process, the first magnetic part rotates relative to the second magnetic part by rotating the first part, so that the projection area of the first magnetic part on the second magnetic part and the projection area of the second magnetic part on the first magnetic part are reduced, the attraction force between the first magnetic part and the second magnetic part is reduced, the attaching force between the first part and the second part is not enough to support the driven part, the second part and the first part can be quickly disconnected, the heat conduction between the first part and the second part is cut off, the heat leakage of a system is reduced, and the refrigeration efficiency of a low-temperature test is improved.
Description
Technical Field
The invention relates to the technical field of friction test equipment, in particular to a magnetic coupling and a power mechanism with the same.
Background
The basic goals of tribology are to explore the scientific mechanism of origin of friction, develop methods to control frictional wear, and apply them to industrial production. In the field of tribology, a friction tester is a common device for performing friction tests, and is divided into a bench test machine and a sample test machine. The object tested by the bench test machine is a product at a component level, such as a bearing, a piston and the like, the component can be installed to simulate the actual operation condition (including speed, load, temperature, environmental atmosphere and the like), and the bench test machine has the function of measuring the friction mechanical index (such as the resistance torque of the bearing and the like). The object tested by the sample testing machine is a sample with simple geometric structure, including a plane, a cylindrical surface, a spherical surface and the like, and the testing method is generally that after an upper sample and a lower sample are loaded, a load in a given vertical direction is applied between the upper sample and the lower sample, and meanwhile, horizontal relative motion is carried out, and the horizontal friction force between the samples is measured. The modes of motion include rolling friction and sliding friction, wherein sliding friction includes reciprocating sliding, circumferential sliding, and the like. Besides basic functions of accurate loading, motion control and friction force measurement, a part of high-end testing machines also have the functions of temperature control, environment control (control of different vacuum degrees, relative humidity and gas components), voltage application and friction site optical/infrared detection.
The common objective of the friction testing machine is that under a certain environment (temperature, atmosphere and the like), a friction contact state is created by adjustable load and speed working condition parameters, and the actual operation of a friction pair in engineering is simulated; secondly, the accurate measurement of mechanical parameters such as friction force, friction torque and the like is ensured in the friction running process, and other information is measured as much as possible. The friction tester is indispensable equipment for evaluating the friction and wear characteristics of materials and modifying and optimizing the research process in the tribology research process. The friction tester under the conventional atmospheric environment is very various. However, the conventional friction test equipment has the problem of heat leakage in the process of cooling in a low-temperature test environment.
Disclosure of Invention
Therefore, it is necessary to provide a magnetic coupling and a power mechanism having the same, which can solve the problem of heat leakage in the process of cooling the conventional friction test equipment in a low-temperature test environment.
An embodiment of the present application provides a magnetic coupling, include:
a first part;
a second section;
the first magnetic part is fixedly connected with the first part;
the second magnetic part is fixedly connected with the second part, the second magnetic part is opposite to the first magnetic part, and the first part is attached to the second part by the magnetic force between the second magnetic part and the first magnetic part; when the first part and the second part rotate relatively, the projection area of the second magnetic part on the first magnetic part is changed.
The magnetic coupling is used for connecting the power part and the driven part, and when the temperature needs to be reduced in the friction test process, the first magnetic part rotates relative to the second magnetic part by rotating the first part so as to reduce the projection area of the first magnetic part on the second magnetic part and the projection area of the second magnetic part on the first magnetic part, so that the attraction force between the first magnetic part and the second magnetic part is reduced, and the adhesion force between the first part and the second part is reduced. Because the laminating power between first portion and the second portion reduces, the weight of driven spare is great in the friction test, and the laminating power between first portion and the second portion is not enough to support driven spare to make second portion and first portion can quick disconnection, cut off the heat-conduction between first portion and the second portion, and then reduced the system and leaked heat, promoted low temperature experiment's refrigeration efficiency.
In one embodiment, the magnetic coupling comprises: the first part is provided with a first groove, and the first magnetic piece is positioned in the first groove; the second part is provided with a second groove, and the second magnetic piece is positioned in the second groove.
In one embodiment, the second portion is provided with a third groove, and the second groove is arranged on the bottom wall of the third groove;
the first part is inserted into the third groove and matched with the third groove, and the magnetic force between the second magnetic part and the first magnetic part enables the first part to be attached to the bottom wall of the third groove.
In one embodiment, the first portion is provided with a fourth groove, and the first groove is arranged on the bottom wall of the fourth groove;
the second part is inserted into the fourth groove and matched with the fourth groove, and the second part is attached to the bottom wall of the fourth groove through magnetic force between the second magnetic piece and the first magnetic piece.
In one embodiment, the second magnetic member has a position corresponding to the first magnetic member, and in the corresponding position, a surface of the first magnetic member facing the second magnetic member is completely projected on the second magnetic member, and a surface of the second magnetic member facing the first magnetic member is completely projected on the first magnetic member.
In one embodiment, the surface of the first magnetic member facing the second magnetic member and the surface of the second magnetic member facing the first magnetic member have the same shape, the same size and are parallel to each other.
In an embodiment, a surface of the first magnetic member facing the second magnetic member and a surface of the second magnetic member facing the first magnetic member are both rectangular.
In one embodiment, the distance between the second magnetic member and the first magnetic member is adjustable.
In an embodiment, the magnetic coupling further includes a first threaded connector, and the first magnetic member is connected to the first portion through the first threaded connector; and/or, the magnetic coupling further comprises a second threaded connector, and the second magnetic part is connected with the second part through the second threaded connector.
Another embodiment of the present application further provides a power mechanism, where the power mechanism includes the magnetic coupling, the connecting portion, and the motor as described in any of the above embodiments, and the connecting portion is connected to the motor; the first part and the connecting part have a first connecting state and a second connecting state; in the first connection state, the first part is fixedly connected with the connection part; in the second connection state, the first portion is rotatably connected with the connection portion.
In an embodiment, the power mechanism further includes a third threaded connection member, the connection portion is sleeved on the magnetic coupling, and in the first connection state, the first portion and the connection portion are fixedly connected through the third threaded connection member; when the third threaded connector is loosened, the first portion and the connecting portion are switched to the second connection state.
Drawings
FIG. 1 is a front view of a magnetic coupling of an embodiment;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic view of the first portion of FIG. 2;
FIG. 4 is a schematic view of the second portion of FIG. 2;
FIG. 5 is a left side view of the magnetic coupling of FIG. 1;
fig. 6 is a sectional view B-B of fig. 5.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1 and 2, a magnetic coupling 100 is provided according to an embodiment of the present invention. The magnetic coupling 100 includes: a first portion 110, a second portion 120, a first magnetic member 130, and a second magnetic member 140. The first magnetic member 130 is fixedly connected to the first portion 110. The second magnetic member 140 is fixedly connected to the second portion 120. The second magnetic member 140 is opposite to the first magnetic member 130, and the magnetic force between the second magnetic member 140 and the first magnetic member 130 makes the first portion 110 and the second portion 120 adhere to each other. When the first portion 110 and the second portion 120 rotate relatively, the projection area of the second magnetic member 140 on the first magnetic member 130 changes.
Specifically, the magnetic coupling 100 is used to connect a power member and a driven member. In the friction test, the first portion 110 is used to connect a power member, such as a motor. The second portion 120 is used for connecting a driven member, such as a support member in a friction test.
The first part 110 is attached to the second part 120 by the magnetic force between the second magnetic part 140 and the first magnetic part 130, so that the first part 110 is fixedly connected with the second part 120, and further the power part and the driven part are connected with the second part 120 through the first part 110, so that the power part can drive the driven part to move through the first part 110 and the second part 120, and a friction test is performed.
Since the first magnetic member 130 is fixedly connected to the first portion 110 and the second magnetic member 140 is fixedly connected to the second portion 120, when the first portion 110 and the second portion 120 rotate relatively, the first magnetic member 130 and the second magnetic member 140 rotate relatively, so that the projected area of the second magnetic member 140 on the first magnetic member 130 changes, and the projected area of the first magnetic member 130 on the second magnetic member 140 changes at the same time.
When the first magnetic element 130 and the second magnetic element 140 rotate relatively, the projection area of the second magnetic element 140 on the first magnetic element 130 and the projection area of the first magnetic element 130 on the second magnetic element 140 increase or decrease. When the projection area of the first magnetic member 130 on the second magnetic member 140 and the projection area of the second magnetic member 140 on the first magnetic member 130 are increased, the attractive force between the first magnetic member 130 and the second magnetic member 140 is increased, and the adhesive force between the first portion 110 and the second portion 120 is increased. When the projection area of the first magnetic member 130 on the second magnetic member 140 and the projection area of the second magnetic member 140 on the first magnetic member 130 are reduced, the attractive force between the first magnetic member 130 and the second magnetic member 140 is reduced, so that the adhesive force between the first portion 110 and the second portion 120 is reduced.
When the temperature needs to be reduced in the friction test process, the first magnetic member 130 is rotated relative to the second magnetic member 140 by rotating the first portion 110, so as to reduce the projection area of the first magnetic member 130 on the second magnetic member 140 and the projection area of the second magnetic member 140 on the first magnetic member 130, thereby reducing the attraction force between the first magnetic member 130 and the second magnetic member 140, and further reducing the adhesion force between the first portion 110 and the second portion 120. Because the attaching force between the first part 110 and the second part 120 is reduced, the weight of the driven part in the friction test is larger, and the attaching force between the first part 110 and the second part 120 is not enough to support the driven part, so that the second part 120 and the first part 110 can be quickly disconnected, the heat conduction between the first part 110 and the second part 120 is cut off, the heat leakage of the system is reduced, and the refrigeration efficiency of the low-temperature test is improved.
When the weight of the driven member is too large, in order to prevent the driving member from being damaged due to too large tensile force, the projection area of the first magnetic member 130 on the second magnetic member 140 can be reduced by rotating the first portion 110, so that the attaching force between the first portion 110 and the second portion 120 is reduced, the attaching force between the first portion 110 and the second portion 120 is not enough to support the driven member, and further the first portion 110 and the second portion 120 can be quickly disconnected, and the driving member and the driven member are disconnected, so that the tensile force overload protection of the driving member is realized.
Referring to fig. 3 and 4 in combination with fig. 2, in an embodiment, the first portion 110 has a first groove 101, and the first magnetic element 130 is located in the first groove 101. The second portion 120 has a second recess 102, and the second magnetic member 140 is located in the second recess 102.
Specifically, the first portion 110 has a first surface. The second portion 120 has a second surface. The first groove 101 is provided in the first surface. The second groove 102 is provided in the second surface. The attractive force of the first magnetic member 130 and the second magnetic member 140 makes the first surface and the second surface adhere to each other. Since the first groove 101 is disposed on the first surface and the second groove 102 is disposed on the second surface, the first magnetic member 130 is located in the recess of the first surface, and the second magnetic member 140 is located in the recess of the second surface, so that the first surface and the second surface can be attached to each other.
In one embodiment, the second portion 120 is provided with a third groove 103, and the first portion 110 is inserted into the third groove 103 and is matched with the third groove 103.
Specifically, the first portion 110 is cylindrical, and the third groove 103 is cylindrical. The first portion 110 is a clearance fit with the second portion 120. Because the first portion 110 is inserted into the third groove 103 and is matched with the third groove 103, when the first portion 110 rotates relative to the second portion 120, radial deviation is not easily generated between the first portion 110 and the second portion 120, and the friction test is facilitated to be reliable in test result.
In this embodiment, the second surface is a bottom wall of the third groove 103. The second groove 102 is provided in the bottom wall of the third groove 103. The magnetic force between the second magnetic member 140 and the first magnetic member 130 makes the first portion 110 fit to the bottom wall of the third recess 103.
In other embodiments, a fourth groove (not shown) may be formed in the first portion 110, and the second portion 120 is inserted into the fourth groove and is adapted to the fourth groove, so that when the first portion 110 rotates relative to the second portion 120, the first portion 110 and the second portion 120 are not easily radially offset, which is beneficial to reliable test results of the friction test. At this time, the first groove 101 is disposed on the bottom wall of the fourth groove, and the magnetic force between the second magnetic member 140 and the first magnetic member 130 makes the second portion 120 adhere to the bottom wall of the fourth groove.
In one embodiment, the second magnetic member 140 has a position corresponding to the first magnetic member 130, in which a surface of the first magnetic member 130 facing the second magnetic member 140 is completely projected on the second magnetic member 140, and a surface of the second magnetic member 140 facing the first magnetic member 130 is completely projected on the first magnetic member 130.
Specifically, the surface of the first magnetic member 130 facing the second magnetic member 140 and the surface of the second magnetic member 140 facing the first magnetic member 130 may be planes having the same shape and size and being parallel to each other.
For example, the surface of the first magnetic member 130 facing the second magnetic member 140 and the surface of the second magnetic member 140 facing the first magnetic member 130 are rectangles having the same size and shape, respectively, and the two surfaces are parallel to each other. When the second magnetic member 140 corresponds to the first magnetic member 130, the length and the width of the two surfaces correspond to each other, so that the surface of the first magnetic member 130 facing the second magnetic member 140 is completely projected on the second magnetic member 140, and the surface of the second magnetic member 140 facing the first magnetic member 130 is completely projected on the first magnetic member 130, at this time, the attraction force between the first magnetic member 130 and the second magnetic member 140 is the largest. When the first part 110 is rotated, an angle is formed between a length direction of a surface of the first magnetic member 130 facing the second magnetic member 140 and a length direction of a surface of the second magnetic member 140 facing the first magnetic member 130, so that a projected area of the first magnetic member 130 on the second magnetic member 140 is reduced, and an attractive force between the first magnetic member 130 and the second magnetic member 140 is reduced. When the angle between the length direction of the surface of the first magnetic member 130 facing the second magnetic member 140 and the length direction of the surface of the second magnetic member 140 facing the first magnetic member 130 is a right angle, the attractive force between the first magnetic member 130 and the second magnetic member 140 is the smallest.
In one embodiment, the distance between the second magnetic member 140 and the first magnetic member 130 is adjustable. By adjusting the distance between the first magnetic member 130 and the second magnetic member 140, the attractive force between the first magnetic member 130 and the second magnetic member 140 can be adjusted, so that the maximum weight that the magnetic coupling 100 can bear when the attractive force between the first magnetic member 130 and the second magnetic member 140 is minimum can be determined, and thus adjustable tension overload protection can be realized.
Referring to fig. 5 and 6, in one embodiment, the magnetic coupling 100 further includes a first threaded connection 150. The first magnetic member 130 is fixedly connected to the first portion 110 by a first threaded connection 150. Two ends of the first threaded connector 150 are respectively connected to the first magnetic member 130 and the bottom wall of the first groove 101. Through adjusting the depth of first threaded connection piece 150 in the diapire of first recess 101 to can adjust the distance of first magnetic part 130 to the diapire of first recess 101, and then can adjust the distance of first magnetic part 130 to second magnetic part 140, simple structure, convenient operation.
Referring to fig. 5 and 6, in one embodiment, the magnetic coupling 100 further includes a second threaded connection 160. The second magnetic member 140 is fixedly connected to the second portion 120 by a second threaded connection 160. Two ends of the second screw connector 160 are respectively connected to the second magnetic element 140 and the bottom wall of the second groove 102. The distance from the second magnetic part 140 to the bottom wall of the second groove 102 can be adjusted by adjusting the depth of the second threaded connector 160 screwed into the bottom wall of the second groove 102, and then the distance from the second magnetic part 140 to the first magnetic part 130 can be adjusted, so that the structure is simple, and the operation is convenient.
An embodiment of the present application also provides a power mechanism (not shown). The power mechanism comprises the magnetic coupling 100, the connecting part and the motor. The connection portions are connected to the motor and the first portion 110, respectively. The first portion 110 and the connecting portion have a first connection state and a second connection state; in the first connection state, the first portion 110 is fixedly connected with the connection portion; in the second connection state, the first portion 110 is rotatably connected with the connection portion.
In particular, the connection may be an electromechanical connection block. The power mechanism further comprises a magnetic coupling rod and a third threaded connecting piece. The connecting part is sleeved on the magnetic coupling rod. The magnetic coupling rod is fixedly connected to the first portion 110. When the first portion 110 and the connecting portion are in the first connection state, the connecting portion and the magnetic coupling rod are fixedly connected through the third threaded connection piece, so that the first portion 110 and the connecting portion are fixedly connected, the connecting portion can be driven by the motor, the connecting portion drives the magnetic coupling rod, the magnetic coupling rod drives the first portion 110, the first portion 110 drives the second portion 120, and the second portion 120 drives the driven member to move. When the third threaded connection member is loosened, the magnetic coupling rod can rotate relative to the connection portion, so that the first portion 110 is driven to rotate relative to the connection portion, and the first portion 110 and the connection portion are switched to the second connection state.
When the magnetic coupling rod is rotated to rotate the first portion 110, the first magnetic member 130 rotates relative to the second magnetic member 140, so as to reduce a projection area of the first magnetic member 130 on the second magnetic member 140 and a projection area of the second magnetic member 140 on the first magnetic member 130, so that an attractive force between the first magnetic member 130 and the second magnetic member 140 is reduced, and thus a bonding force between the first portion 110 and the second portion 120 is reduced. Because the attaching force between the first part 110 and the second part 120 is reduced, the weight of the driven part in the friction test is larger, and the attaching force between the first part 110 and the second part 120 is not enough to support the driven part, so that the second part 120 and the first part 110 can be quickly disconnected, the heat conduction between the first part 110 and the second part 120 is cut off, the heat leakage of the system is reduced, and the refrigeration efficiency of the low-temperature test is improved.
When the weight of the driven member is too large, in order to prevent the driving member from being damaged due to too large pulling force, the magnetic coupling rod can be rotated to rotate the first portion 110, so as to reduce the projection area of the first magnetic member 130 on the second magnetic member 140, and thus the bonding force between the first portion 110 and the second portion 120 is reduced, and the bonding force between the first portion 110 and the second portion 120 is not enough to support the driven member, so that the first portion 110 and the second portion 120 can be quickly disconnected, and the driving member is disconnected from the driven member, thereby realizing the pulling force overload protection.
It is understood that in other embodiments, the power mechanism may not be provided with a magnetic coupling rod, the connecting portion is directly sleeved on the first portion 110, and the connecting portion and the first portion 110 may be fixedly connected or the first portion 110 and the connecting portion may rotate relatively.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A magnetic coupling, comprising:
a first part;
a second section;
the first magnetic part is fixedly connected with the first part;
the second magnetic part is fixedly connected with the second part, the second magnetic part is opposite to the first magnetic part, and the first part is attached to the second part by the magnetic force between the second magnetic part and the first magnetic part; when the first part and the second part rotate relatively, the projection area of the second magnetic part on the first magnetic part is changed;
the second magnetic member has a position corresponding to the first magnetic member, and in the corresponding position, the surface of the first magnetic member facing the second magnetic member is completely projected on the second magnetic member, and the surface of the second magnetic member facing the first magnetic member is completely projected on the first magnetic member;
the surface of the first magnetic part facing the second magnetic part and the surface of the second magnetic part facing the first magnetic part have the same shape and size and are parallel to each other;
the surface of the first magnetic part facing the second magnetic part and the surface of the second magnetic part facing the first magnetic part are both rectangular.
2. The magnetic coupling of claim 1, comprising: the first part is provided with a first groove, and the first magnetic piece is positioned in the first groove; the second part is provided with a second groove, and the second magnetic piece is positioned in the second groove.
3. The magnetic coupling of claim 2,
the second part is provided with a third groove, and the second groove is arranged on the bottom wall of the third groove;
the first part is inserted into the third groove and matched with the third groove, and the magnetic force between the second magnetic part and the first magnetic part enables the first part to be attached to the bottom wall of the third groove.
4. The magnetic coupling of claim 2,
the first part is provided with a fourth groove, and the first groove is arranged on the bottom wall of the fourth groove;
the second part is inserted into the fourth groove and matched with the fourth groove, and the second part is attached to the bottom wall of the fourth groove through magnetic force between the second magnetic piece and the first magnetic piece.
5. The coupling of claim 2, wherein the first portion has a first surface, and wherein the first recess is defined in the first surface; the second part is provided with a second surface, and the second groove is formed in the second surface; the attractive force between the first magnetic piece and the second magnetic piece can enable the first surface to be attached to the second surface.
6. A magnetic coupling according to claim 1, wherein the distance between the second magnetic member and the first magnetic member is adjustable.
7. A magnetic coupling according to claim 1 or 6, further comprising a first threaded connection, said first magnetic member being connected to said first portion by said first threaded connection; and/or, the magnetic coupling further comprises a second threaded connector, and the second magnetic part is connected with the second part through the second threaded connector.
8. A magnetic coupling according to claim 1 or 6, further comprising a second threaded connection, said second magnetic member being connected to said second portion by said second threaded connection.
9. A power mechanism is characterized by comprising the magnetic coupling as claimed in any one of claims 1 to 8, a connecting part and a motor, wherein the connecting part is connected with the motor; the first part and the connecting part have a first connecting state and a second connecting state; in the first connection state, the first part is fixedly connected with the connection part; in the second connection state, the first portion is rotatably connected with the connection portion.
10. The power mechanism as claimed in claim 9, further comprising a third screw connection member, wherein the connection portion is sleeved on the magnetic coupling, and in the first connection state, the first portion and the connection portion are fixedly connected through the third screw connection member; when the third threaded connector is loosened, the first portion and the connecting portion are switched to the second connection state.
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| CN202010332138.7A CN111664201B (en) | 2020-04-24 | 2020-04-24 | Magnetic coupling and power mechanism with same |
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| CN202010332138.7A CN111664201B (en) | 2020-04-24 | 2020-04-24 | Magnetic coupling and power mechanism with same |
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| CN111664201B true CN111664201B (en) | 2021-05-18 |
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