An electromagnet that can perform single - direction or bi - direction operations

Abstract

The present invention relates to the technical field of electromagnets, and specifically relates to an electromagnet that can be controlled for single and bidirectional actions, including: an electromagnetic drive assembly for receiving a first input power supply with a power of A and a second input power supply with a power of B, where A < B, and forming electromagnetic fields B1 and B2 respectively after receiving the first input power supply and the second input power supply, and the magnetic field intensity of B2 is greater than that of B1; a first moving part and a second moving part are respectively arranged on both sides of the electromagnetic drive assembly. Under the action of the electromagnetic field B1, only the first moving part generates an action in the first direction, and under the action of the electromagnetic field B2, the first moving part generates an action in the first direction and the second moving part generates an action in the second direction under the action of the electromagnetic field B2. The present invention provides an electromagnet that realizes the unidirectional action of only the first moving part in the first direction, or the bidirectional simultaneous action of the first moving part in the first direction and the second moving part in the second direction through two input power supplies with different powers.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic driving components of electromagnets, and particularly relates to an electromagnet that can be controlled for single - and bi - directional actions. Background Art

[0002] In the prior art, an electromagnet is often used to drive the movement in one direction. Generally, it consists of a stationary iron core and a moving iron core. After the electromagnet is powered on, the moving iron core is magnetized to generate an electromagnetic attraction force, and the moving iron core is pulled towards the stationary iron core. Now, there are also structures in the market that can "generate two driving movements in opposite directions", which are roughly the following two schemes: 1. By switching the power direction (switching the polarity) to change the direction of the magnetic field generated by the electromagnet to achieve the purpose of reverse action. However, due to the mechanism principle of the acting force, compared with a unidirectional electromagnet, the force applied under the same volume and power supply is relatively small, and the requirements for the power supply facilities configuration are higher; 2. Using two groups of unidirectional electromagnets for separate control. This scheme has a relatively high cost and occupies more space, and there are also requirements for the number of power control circuits. Summary of the Invention

[0003] The purpose of the present invention is to overcome the disadvantages and deficiencies existing in the prior art, and provide an electromagnet that can be controlled for single - and bi - directional actions.

[0004] The technical solution adopted by the present invention is as follows: An electromagnet that can be controlled for single - and bi - directional actions, comprising:

[0005] An electromagnetic driving component, which is used to receive a first input power supply with a power of P A and a second input power supply with a power of P B , P A < P B , and respectively form electromagnetic fields B1 and B2 after receiving the first input power supply and the second input power supply, and the magnetic field intensity of B2 is greater than that of B1;

[0006] A first moving part and a second moving part. Under the action of the electromagnetic field B1, only the first moving part generates an action in the first direction, and under the action of the electromagnetic field B2, the first moving part generates an action in the first direction at the same time, and the second moving part generates an action in the second direction under the action of the electromagnetic field B2.

[0007] Preferably, it includes a first assisting elastic member and a second assisting elastic member;

[0008] When the electromagnetic driving component does not form an electromagnetic field, the first assisting elastic member and the second assisting elastic member store energy respectively to form elastic forces F1T and F2T;

[0009] When the first moving part moves in the first direction, the first assisting elastic member releases energy to apply an assisting force in the first direction to the first moving part;

[0010] When the second moving part moves in the second direction, the second assisting elastic member releases energy to apply an assisting force in the second direction to the second moving part.

[0011] Preferably, a magnet is provided. When the electromagnetic driving assembly does not form an electromagnetic field, under the action of the magnetic field of the magnet, a magnetic force F1Y opposite to the first direction is formed on the first moving part, and a magnetic force F2Y opposite to the second direction is formed on the second moving part; F1Y > F1T, F2Y > F2T;

[0012] Under the action of the electromagnetic field B1, a magnetic force F1A in the first direction is formed on the first moving part and a magnetic force F2A in the second direction is formed on the second moving part, F1A + F1T > F1Y, F2A + F2T < F2Y;

[0013] Under the action of the electromagnetic field B2, a magnetic force F1B in the first direction is formed on the first moving part and a magnetic force F2B in the second direction is formed on the second moving part, F1B + F1T > F1Y, F2B + F2T > F2Y.

[0014] Preferably, the electromagnetic driving assembly includes a coil with the straight line L as the central axis and a static iron core located at the center of the coil. The first moving part and the second moving part are respectively located at both ends of the static iron core along the direction of the central axis L, and the first direction is opposite to the second direction.

[0015] Preferably, the first moving part includes a first magnet, the second moving part includes a second magnet, and the first magnet and the second magnet are arranged with opposite pole directions.

[0016] Preferably, it includes a coil bobbin, which has a main body part around which the coil is wound and first flange parts and second flange parts provided at both ends of the main body part. A through hole opening to the first flange part and the second flange part is provided in the main body part, and the static iron core is inserted and fixed in the through hole;

[0017] The first moving part includes a first armature, and the second moving part includes a second armature;

[0018] The first assisting elastic member is a compression spring and acts between the first flange part and the first armature;

[0019] The second assisting elastic member is a compression spring and acts between the second flange part and the second armature;

[0020] It further includes a housing made of a magnetic conductive material. The housing has a hollow structure with openings at both ends. The electromagnetic drive assembly is fixed inside the housing. The static iron core is arranged with openings near the first flange portion and the second flange portion at both ends. An installation groove is provided at the center of the first armature near the static iron core. The first magnet is arranged in the installation groove and an air gap is formed between the first magnet and the end of the static iron core. An installation groove is provided at the center of the second armature near the static iron core. The second magnet is arranged in the installation groove and an air gap is formed between the second magnet and the end of the static iron core.

[0021] Preferably, it further includes a housing made of a magnetic conductive material. The housing has a hollow structure with openings at both ends. The electromagnetic drive assembly is fixed inside the housing. The static iron core is arranged with openings near the first flange portion and the second flange portion at both ends. An installation groove is provided at the center of the first armature near the static iron core. The first magnet is arranged in the installation groove and an air gap is formed between the first magnet and the end of the static iron core. An installation groove is provided at the center of the second armature near the static iron core. The second magnet is arranged in the installation groove and an air gap is formed between the second magnet and the end of the static iron core.

[0022] Preferably, the first moving part includes a first armature, the second moving part includes a second armature, the static iron core is a magnet, and the first armature and the second armature are respectively located at both ends of the static iron core and a magnetic attraction force is formed between the first armature and the second armature and the static iron core.

[0023] Preferably, it includes a coil bobbin which has a main body part around which the coil is wound and a first flange portion and a second flange portion provided at both ends of the main body part. A through hole opening towards the first flange portion and the second flange portion is provided in the main body part. The static iron core is fixed at the center of the through hole. The first armature and the second armature are both located in the through hole and are respectively on both sides of the static iron core. The first armature and the second armature are respectively provided with a first driving rod and a second driving rod passing through the openings of the first flange portion and the second flange portion. The outer ends of the first driving rod and the second driving rod are respectively fixedly connected to a first push plate and a second push plate.

[0024] Preferably, it further includes a housing. The housing has a hollow structure with both ends closed. The electromagnetic drive assembly is fixed inside the housing. Both ends of the housing bulge along the central axis L direction to form hollow guide columns. The first driving rod and the second driving rod respectively pass through the guide columns. A first guide ring is provided on the first push plate. The first guide ring is adapted to the guide column and is sleeved outside one end of the guide column. A second guide ring is provided on the second push plate. The second guide ring is adapted to the guide column and is sleeved outside the other end of the guide column. The first assisting elastic member and the second assisting elastic member are respectively sleeved between the first guide ring and the second guide ring.

[0025] Preferably, F1T > F2T.

[0026] The present invention provides an electromagnet, which realizes the one-way movement of only the first moving part in the first direction, or the two-way simultaneous movement of the first moving part in the first direction and the second moving part in the second direction through two input power supplies with different powers. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, obtaining other drawings based on these drawings still belongs to the scope of the present invention.

[0028] Figure 1 Structural schematic diagram of Embodiment 1;

[0029] Figure 2 Cross-sectional view of Embodiment 1;

[0030] Figure 3 Schematic diagram of one-way movement of Embodiment 1;

[0031] Figure 4 Schematic diagram of two-way movement of Embodiment 1;

[0032] Figure 5 Structural schematic diagram of Embodiment 2;

[0033] Figure 6 Cross-sectional view of Embodiment 2;

[0034] In the figure,

[0035] Electromagnetic drive assembly - 100, coil - 110, coil bobbin - 120, main body part - 121, first flange part - 122, second flange part - 123, static iron core - 130, outer shell - 140, guide post - 141;

[0036] First moving part - 200, first armature - 210, first magnet - 220, first assisting elastic member - 230, first driving rod - 240, first push plate - 250, first guide ring - 260;

[0037] Second moving part - 300, second armature - 310, second magnet - 320, second assisting elastic member - 330, second driving rod - 340, second push plate - 350, second guide ring - 360. Detailed Description of the Embodiments

[0038] To make the objectives, technical solutions and advantages of the present invention clearer, the following will further describe the present invention in detail with reference to the drawings.

[0039] It should be noted that all the expressions using "first" and "second" in the embodiments of the present invention are used to distinguish two entities or parameters with the same name but different identities. It can be seen that "first" and "second" are only for the convenience of expression and should not be construed as a limitation on the embodiments of the present invention. This will not be elaborated one by one in the subsequent embodiments.

[0040] The terms of direction and position mentioned in the present invention, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only with reference to the direction or position of the accompanying drawings. Therefore, the terms of direction and position used are for explaining and understanding the present invention, rather than a limitation on the protection scope of the present invention.

[0041] In the present invention, the statement "when the electromagnetic drive assembly does not form an electromagnetic field" refers to the initial state when no action occurs or the reset to the initial state.

[0042] The present invention provides an electromagnet that can perform single - and double - direction actions, which includes: an electromagnetic drive assembly for receiving a first input power supply with a power of P A and a second input power supply with a power of P B , P A < P B , and after receiving the first input power supply and the second input power supply, forming electromagnetic fields B1 and B2 respectively, and the magnetic field intensity of B2 is greater than that of B1; a first moving part and a second moving part, which are respectively arranged on both sides of the electromagnetic drive assembly. Under the action of the electromagnetic field B1, only the first moving part generates an action in the first direction X1, and under the action of the electromagnetic field B2, the first moving part generates an action in the first direction X1 at the same time and the second moving part generates an action in the second direction X2 under the action of the electromagnetic field B2. That is, two electromagnetic fields with different magnetic field intensities are realized through two input power supplies with different powers. Different electromagnetic fields generate different electromagnetic forces on the same moving part. By setting different external forces that break the force balance of the first moving part and the second moving part, the minimum external forces for the first moving part and the second moving part to move are different. The electromagnetic force generated by the electromagnetic field B1 on the first moving part is not less than the minimum external force for the first moving part to move and the electromagnetic force generated on the second moving part is less than the minimum external force for the second moving part to move. Therefore, the first moving part can move and the second moving part does not move; the electromagnetic force generated by the electromagnetic field B2 on the first moving part is not less than the minimum external force for the first moving part to move and the electromagnetic force generated on the second moving part is not less than the minimum external force for the second moving part to move. Therefore, the first moving part and the second moving part can move simultaneously.

[0043] The first direction of the present invention can be the same direction or different directions. Specifically, it can be set according to the positional relationship between the electromagnetic field formed by the electromagnetic drive assembly under the action of the first input power supply and the second input power supply and the first moving part and the second moving part.

[0044] In some embodiments of the present invention, it includes a first boosting elastic member and a second boosting elastic member; when the electromagnetic drive assembly does not form an electromagnetic field, the first boosting elastic member and the second boosting elastic member store energy respectively to form elastic forces F1T and F2T; when the first moving part moves in the first direction, the first boosting elastic member releases energy to apply a boosting force in the first direction to the first moving part; when the second moving part moves in the second direction, the second boosting elastic member releases energy to apply a boosting force in the second direction to the second moving part.

[0045] In some embodiments of the present invention, a magnet is provided, so that when the electromagnetic drive assembly does not form an electromagnetic field, only under the magnetic field of the magnet, a magnetic force F1Y opposite to the first direction X1 is formed between the first moving parts, and a magnetic force F2Y is formed on the second moving part. It is set that F1Y > F1T and F2Y > F2T, that is, in the initial state, the first boosting elastic member and the second boosting elastic member are kept in the energy storage state by the magnetic force F1Y and the magnetic force F2Y respectively; it is further set that under the action of the electromagnetic field B1, a magnetic force F1A in the first direction X1 is formed on the first moving part and a magnetic force F2A in the second direction X2 is formed on the second moving part, and F1A + F1T > F1Y, F2A + F2T < F2Y, so the force balance of the first moving part can be broken to make the first moving part move, and the force balance of the second moving part cannot be broken to make the second moving part unable to move; under the action of the electromagnetic field B2, a magnetic force F1B in the first direction X1 is formed on the first moving part and a magnetic force F2B in the second direction X2 is formed on the second moving part, and F1B + F1T > F1Y, F2B + F2T > F2Y, so the force balance of the first moving part and the second moving part can be broken to make the first moving part and the second moving part move simultaneously.

[0046] To achieve the setting that the sizes of the electromagnetic fields for triggering the two tripping modes are different (i.e., the input power supply powers are different), it can be achieved by adjusting different technical parameters. Specifically, the spring elastic parameters can be designed so that: F1T > F2T, or the materials of the first moving part 200 and the second moving part 300 can be changed (i.e., the magnetic energy product is changed), the cross-sectional area (i.e., the magnetic flux is changed), the air gap length, etc.

[0047] The following are some specific embodiments of the present invention.

[0048] Embodiment 1:

[0049] An electromagnet that can control single - and double - direction actions, its structure is as Figure 1As shown, it includes a housing 140, a first moving part 200 and a second moving part 300 respectively located on both sides of the housing 140.

[0050] As Figure 2 shown, the housing 140 has a hollow structure with openings at both ends. It is made of a magnetic conductive material and is provided with an electromagnetic driving component 100 inside. Specifically, the electromagnetic driving component 100 includes a coil 110, a coil bobbin 120 and a static iron core 130. The coil 110, the coil bobbin 120, the static iron core 130 and the housing 140 are in a relatively fixed and non-displaced state. The coil bobbin 120 has a main body portion 121 around which the coil 110 is wound, and a first flange portion 122 and a second flange portion 123 provided at both ends of the main body portion 121. A through hole opening towards the first flange portion 122 and the second flange portion 123 is provided in the main body portion 121. The static iron core 130 is inserted and fixed in the through hole. The first flange portion 122 and the second flange portion 123 form a holding force on the coil 110 to keep the coil 110 outside the main body portion 121. The coil 110 is connected to a control circuit and is used to form a magnetic field when energized. The static iron core 130 can be fixed by common fixing structures such as tight fit, screw fixing, adhesive fixing, pin fixing, and limit fixing.

[0051] The first moving part 200 includes a first armature 210 and a first magnet 220. The first magnet 220 is fixed to the side of the first armature 210 close to the housing 140. The first armature 210 and the first magnet 220 form a relatively fixed and non-displaced state. The second moving part 300 includes a second armature 310 and a second magnet 320. The second magnet 320 is fixed to the side of the second armature 310 close to the housing 140. The second armature 310 and the second magnet 320 form a relatively fixed and non-displaced state. A first assisting elastic member 230 is provided between the first moving part 200 and the electromagnetic driving component 100, and a second assisting elastic member 330 is provided between the second moving part 300 and the electromagnetic driving component 100. The first magnet 220 and the second magnet 320 are arranged with opposite pole directions, that is, as Figure 1 、 Figure 5 shown, when the coil is energized, the two ends of the static iron core have opposite poles, and respectively form magnetic repulsive forces with opposite directions with the first magnet 220 and the second magnet 320. When the coil is not energized, that is, as Figure 2As shown, the first moving part 200, the outer shell 140, and the second moving part 300 are sequentially attached. The first boosting elastic member 230 and the second boosting elastic member 330 store energy respectively to form elastic forces F1T and F2T. Under the action of the magnetic-conductive outer shell 140 and the magnetic-conductive static iron core 130, the first magnet 220 and the second magnet 320 achieve a magnetic closed-loop. At this time, a magnetic attraction force F1Y is formed between the first magnet 220 and the static iron core 130, and F1Y > F1T; a magnetic attraction force F2Y is formed between the second magnet 320 and the static iron core 130, and F2Y > F2T. At this time, the electromagnetic force assembly achieves force balance, and the first moving part 200 and the second moving part 300 will be firmly attracted and fixed on the electromagnetic drive assembly 100.

[0052] In this embodiment, it is further set that F1Y - F1T < F2Y - F2T, that is, the electromagnetic driving force that causes the force balance failure of the first moving part 200 is less than the electromagnetic driving force that causes the force balance failure of the second moving part 300. In this way, by controlling the input power of the coil 110, the magnetic field intensity of the electromagnetic field can be controlled, so as to achieve the effects of different actions of only the first moving part 200 or both the first moving part 200 and the second moving part 300 simultaneously. The control circuit connected to the coil 110 can send a first driving electrical signal with an input power of P A and a second driving electrical signal with an input power of P B to the coil 110. After the coil 110 receives the first driving electrical signal and the second driving electrical signal, electromagnetic fields of B1 and B2 are respectively formed. According to Ampere's circuital law, the intensity of the electromagnetic field is proportional to the input power. It is set that P A < P B , so the magnetic field intensity of B2 is greater than that of B1. Under the electromagnetic field of B1, magnetic repulsive forces F1A and F2A are respectively formed on the first moving part 200 and the second moving part 300. It is set that F1A + F1T > F1Y and F2A + F2T < F2Y. As Figure 3 shown, that is, under the electromagnetic field of B1, the force balance of the first moving part 200 fails, and under the action of the magnetic repulsive force, it is pushed away and relatively far away from the electromagnetic drive assembly 100. The force balance of the second moving part 300 does not fail, and it still remains attracted and fixed on the electromagnetic drive assembly 100. Under the electromagnetic field of B2, magnetic repulsive forces F1B and F2B are respectively formed on the first moving part 200 and the second moving part 300. It is set that F1B + F1T > F1Y and F2B + F2T > F2Y. As Figure 4 shown, that is, under the electromagnetic field of B2, the force balances of both the first moving part 200 and the second moving part 300 fail, and under the action of the magnetic repulsive force, they are simultaneously pushed away and relatively far away from the electromagnetic drive assembly 100.

[0053] In this embodiment, the structures and materials of the first moving part 200 and the second moving part 300 are basically the same. Only by setting the spring elastic parameters, the sizes of the electromagnetic fields for triggering the two tripping modes are different (i.e., the input power of the power supply is different), which is relatively easy to control.

[0054] Both ends of the static iron core 130 are arranged to be open near the first flange portion 122 and the second flange portion 123; an installation groove is provided at the center of the side of the first armature 210 close to the static iron core 130, and the first magnet 220 is arranged in the installation groove and forms an air gap with the end of the static iron core 130; an installation groove is provided at the center of the side of the second armature 310 close to the static iron core 130, and the second magnet 320 is arranged in the installation groove and forms an air gap with the end of the static iron core 130. Ensure a certain air gap length to avoid mechanical jamming.

[0055] Furthermore, limiting convex rings are provided on both the first flange portion 122 and the second flange portion 123, and a limiting groove is provided on each of the first armature 210 and the second armature 310. Both ends of the first boosting elastic member 230 and the second boosting elastic member 330 are radially limited within the limiting convex rings and the limiting grooves.

[0056] Embodiment 2:

[0057] This embodiment provides an electromagnet that can operate in both single - direction and bi - direction, and its specific structure is as Figure 5 、 Figure 6 shown, including a housing 140 and a first moving part 200 and a second moving part 300 located on both sides of the housing 140 respectively. The housing 140 has a hollow structure and both ends are closed, and an electromagnetic driving assembly 100 is arranged inside. Specifically, the electromagnetic driving assembly 100 includes a coil 110, a coil bobbin 120, and a static iron core 130. The coil 110, the coil bobbin 120, the static iron core 130, and the housing 140 are in a relatively fixed and non - displaced state. The coil bobbin 120 has a main body portion 121 around which the coil 110 is wound and first flange portion 122 and second flange portion 123 provided at both ends of the main body portion 121. A through - hole opening towards the first flange portion 122 and the second flange portion 123 is provided in the main body portion 121, and the static iron core 130 is inserted and fixed in the through - hole. The first flange portion 122 and the second flange portion 123 form a holding force on the coil 110 to keep the coil 110 outside the main body portion 121. The coil 110 is connected to a control circuit and is used to form a magnetic field when energized. An annular groove is provided at the center of the through - hole, and the static iron core 130 is fixed in the annular groove.

[0058] In this embodiment, the static iron core 130 is a magnet. The first moving component 200 includes a first armature 210, and the second moving component 300 includes a second armature 310. The first armature 210 and the second moving component 300 are both located in the through hole and are respectively located on both sides of the static iron core 130 to form an air gap with the end of the static iron core 130. Under the magnetic field of the static iron core 130, a magnetic suction force is formed on the first armature 210 and the second armature 310. The first armature 210 and the second armature 310 are respectively provided with a first driving rod 240 and a second driving rod 340 passing through the openings of the first flange portion 122 and the second flange portion 123. The first armature 210 and the second armature 310 are both located in the housing 140. The first driving rod 240 and the second driving rod 340 pass through the housing 140 and are fixedly connected to the first push plate 250 and the second push plate 350.

[0059] Further, both ends of the housing 140 bulge along the central axis L direction to form hollow guide columns 141. The first driving rod 240 and the second driving rod 340 respectively pass through the guide columns 141. The first push plate 250 is fixedly connected with a first guide ring 260. The first guide ring 260 is adapted to the guide column 141 and is sleeved outside the guide column 141 at one end. The second push plate 350 is fixedly connected with a second guide ring 360. The second guide ring 360 is adapted to the guide column 141 and is sleeved outside the guide column 141 at the other end. A first assisting elastic member 230 and a second assisting elastic member 330 are sleeved outside the first guide ring 260 and the second guide ring 360. The first assisting elastic member 230 and the second assisting elastic member 330 are specifically compression springs.

[0060] In the initial state where the non-powered electromagnetic driving assembly does not form an electromagnetic field, under the magnetic field of the static iron core 130, magnetic suction forces F1Y and F2Y are respectively formed on the first armature 210 and the second armature 310. And the first assisting elastic member 230 and the second assisting elastic member 330 are compressed to store energy to form elastic forces F1T and F2T. F1Y > F1T, F2Y > F2T, and the first moving component 200 and the second moving component 300 maintain force balance. The control circuit connected to the coil 110 can transmit a first driving electrical signal with an input power of P A and a second driving electrical signal with an input power of P B to the coil 110. After the coil 110 receives the first driving electrical signal and the second driving electrical signal, electromagnetic fields B1 and B2 are respectively formed. According to Ampere's circuital law, the intensity of the electromagnetic field is proportional to the input power. It is set that P A <P B, so the magnetic field intensity of B2 is greater than that of B1. Under the electromagnetic field of B1, magnetic repulsive forces F1A and F2A are respectively formed on the first moving member 200 and the second moving member 300. It is set that F1A + F1T > F1Y and F2A + F2T < F2Y. That is, under the electromagnetic field of B1, the force balance of the first moving member 200 fails, and thus under the action of the magnetic repulsive force, it is pushed away and moves relatively far away from the electromagnetic drive assembly 100. The force balance of the second moving member 300 does not fail and still remains attracted and fixed on the electromagnetic drive assembly 100. Under the electromagnetic field of B2, magnetic repulsive forces F1B and F2B are respectively formed on the first moving member 200 and the second moving member 300. It is set that F1B + F1T > F1Y and F2B + F2T > F2Y. That is, under the electromagnetic field of B2, the force balances of both the first moving member 200 and the second moving member 300 fail, and thus under the action of the magnetic repulsive force, they are simultaneously pushed away and move relatively far away from the electromagnetic drive assembly 100.

[0061] In this embodiment, the structures and materials of the first moving member 200 and the second moving member 300 are basically the same. Only by setting the spring elastic parameters can the sizes of the electromagnetic fields for triggering the two tripping modes (i.e., different input power supplies) be set, which is relatively easy to control.

[0062] Those of ordinary skill in the art can understand that all or part of the steps in the methods of the above embodiments can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium, such as ROM / RAM, disk, optical disc, etc.

[0063] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An electromagnet that can perform single - direction or bi - direction operations, characterized in that, Comprising: Electromagnetic drive assembly, for receiving a first input power supply with a power of P A and a second input power supply with a power of P B , P A <P B , and after receiving the first input power supply and the second input power supply, electromagnetic fields of B1 and B2 are respectively formed, and the magnetic field intensity of B2 is greater than that of B1; A first moving part and a second moving part. Under the action of the electromagnetic field B1, only the first moving part generates an action in the first direction. And under the action of the electromagnetic field B2, the first moving part generates an action in the first direction and the second moving part generates an action in the second direction under the action of the electromagnetic field B2. The first direction and the second direction are the same direction or different directions.

2. The electromagnet capable of single - direction and bi - direction operation according to claim 1, wherein: Including a first boosting elastic member and a second boosting elastic member; When the electromagnetic driving assembly does not form an electromagnetic field, the first boosting elastic member and the second boosting elastic member respectively store energy to form elastic forces F1T and F2T; When the first moving part moves in the first direction, the first boosting elastic member releases energy to apply a boosting force in the first direction to the first moving part; When the second moving part moves in the second direction, the second boosting elastic member releases energy to apply a boosting force in the second direction to the second moving part.

3. The electromagnet capable of single - direction and bi - direction operation according to claim 2, characterized in that: A magnet is provided. When the electromagnetic driving assembly does not form an electromagnetic field, under the action of the magnetic field of the magnet, a magnetic force F1Y opposite to the first direction is formed on the first moving part, and a magnetic force F2Y opposite to the second direction is formed on the second moving part; F1Y > F1T, F2Y > F2T; Under the action of the electromagnetic field B1, a magnetic force F1A in the first direction is formed on the first moving part and a magnetic force F2A in the second direction is formed on the second moving part, F1A + F1T > F1Y, F2A + F2T < F2Y; Under the action of the electromagnetic field B2, a magnetic force F1B in the first direction is formed on the first moving part and a magnetic force F2B in the second direction is formed on the second moving part, F1B + F1T > F1Y, F2B + F2T > F2Y.

4. The electromagnet capable of single - direction and bi - direction operation according to claim 3, wherein: The electromagnetic driving assembly includes a coil with a straight line L as the central axis and a static iron core located at the center of the coil. The first moving part and the second moving part are respectively located at both ends of the static iron core along the direction of the central axis L, and the first direction is opposite to the second direction.

5. The electromagnet capable of single - direction and bi - direction operation according to claim 4, characterized in that: The first moving part includes a first magnet, the second moving part includes a second magnet, and the first magnet and the second magnet are arranged with opposite pole directions.

6. The electromagnet capable of single - way and two - way actions according to claim 5, wherein: Including a coil bobbin, which has a main body part around which the coil is wound and a first flange part and a second flange part provided at both ends of the main body part. A through hole opening to the first flange part and the second flange part is provided in the main body part, and the static iron core is inserted and fixed in the through hole; The first moving part includes a first armature, and the second moving part includes a second armature; The first boosting elastic member is a compression spring and acts between the first flange part and the first armature; The second boosting elastic member is a compression spring and acts between the second flange part and the second armature; It further includes a housing made of a magnetic conductive material. The housing has a hollow structure with openings at both ends. The electromagnetic driving assembly is fixed inside the housing, and the two ends of the static iron core are arranged close to the openings of the first flange part and the second flange part; An installation groove is provided at the center of the side of the first armature close to the static iron core, and the first magnet is arranged in the installation groove and an air gap is formed between the first magnet and the end of the static iron core; An installation groove is provided at the center of the side of the second armature close to the static iron core, and the second magnet is arranged in the installation groove and an air gap is formed between the second magnet and the end of the static iron core.

7. The electromagnet capable of single - direction and bi - direction operation according to claim 4, characterized in that: The first moving part includes a first armature, the second moving part includes a second armature, the static iron core is a magnet, and the first armature and the second armature are respectively located at both ends of the static iron core and form a magnetic attraction force with the static iron core.

8. The electromagnet capable of single - direction and bi - direction operation according to claim 7, wherein: It includes a coil bobbin having a main body part around which the coil is wound and first flange parts and second flange parts provided at both ends of the main body part. A through hole opening to the first flange part and the second flange part is provided in the main body part. The static iron core is fixed at the center of the through hole. The first armature and the second armature are both located in the through hole and on both sides of the static iron core respectively. A first driving rod and a second driving rod passing through the openings of the first flange part and the second flange part are respectively provided on the first armature and the second armature. The outer ends of the first driving rod and the second driving rod are respectively fixedly connected to a first push plate and a second push plate.

9. The electromagnet capable of single - direction and bi - direction operation according to claim 8, characterized in that: It further includes a housing which is of a hollow structure with both ends closed. The electromagnetic driving assembly is fixed inside the housing. Both ends of the housing bulge along the central axis L direction to form hollow guide columns. The first driving rod and the second driving rod respectively pass through the guide columns. A first guide ring is provided on the first push plate. The first guide ring is adapted to the guide column and sleeved outside the guide column at one end. A second guide ring is provided on the second push plate. The second guide ring is adapted to the guide column and sleeved outside the guide column at the other end. The first boosting elastic member and the second boosting elastic member are respectively sleeved between the first guide ring and the second guide ring.

10. The electromagnet capable of single - way and two - way actions according to any one of claims 2 - 9, characterized in that: F1T > F2T.

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