Electrified coil switching power reduction type electromagnet

Abstract

The invention provides an electrified coil switching power reduction type electromagnet. An iron yoke is connected with an iron core, and a butt joint and an armature are fixed together; the spring is assembled between the armature and the iron core; the coil rack is assembled between the iron yoke and the armature; the first coil and the second coil are wound on the coil rack in a layered mode and used for providing power for the electromagnet and keeping an electromagnetic field, the contact A and the contact B are connected to a lead of the second coil respectively, and the contact C and the contact D are connected to a lead of the first coil respectively; after the first coil is electrified and attracted, the armature disconnects the contact A and the contact B through the connecting rod and the connecting plate, the first coil is disconnected, meanwhile, the contact C and the contact D are connected, the second coil is connected, and the second coil provides a holding electromagnetic field. Due to the fact that the coil I and the coil II are different in wire diameter and corresponding power, the electromagnet coil is switched from the high-power coil I to the low-power coil II after being electrified through mechanical conversion of the connecting rod and the connecting plate, product heating is reduced under the condition that the function of the electromagnet is not affected, and the service life of the product is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of electromagnets, and in particular relates to an electromagnet with reduced power when switching an energized coil. Background Art

[0002] An electromagnet is an electrical actuator that converts electrical energy into mechanical actuation. It has the characteristics of simple structure, fast response speed, small size and light weight, and is widely used in various fields of industrial applications.

[0003] Since electromagnets have the characteristics of large electromagnetic attraction and short start-up time, they are widely used in the field of industrial machinery. However, the continuous heating of the coil when the electromagnet continues to work directly affects the insulation performance of the coil and the overall service life of the electromagnet. Summary of the invention

[0004] In order to solve the technical problems of reduced coil insulation performance and short service life of the electromagnet due to heating of the electromagnet coil after long-term power-on in the related art, the present invention provides a power-on coil switching power reduction type electromagnet, which switches the working coil from a high-power coil to a low-power coil through mechanical conversion when the electromagnet is attracted during operation, which does not affect the electromagnet in a holding state after the electromagnet is attracted, and can effectively reduce the heating of the coil, thereby solving the problem of short service life caused by heating of the electromagnet coil due to long-term power-on, and can greatly extend the service life of the electromagnet, and has broad application prospects. The technical solution is as follows:

[0005] An electromagnet with reduced power when switching an energized coil, comprising: an iron yoke 1, an iron core 2, a butt joint 3, a spring 4, an armature 6, a coil frame 5, a coil 16, a coil 2 17, a contact A8, a contact B9, a contact C10, and a contact D11;

[0006] The iron yoke 1 is connected to the iron core 2, and the joint 3 is fixed to the armature 6; the spring 4 is installed between the armature 6 and the iron core 2, and is used to provide a rebound force to the armature 6 when the power is off; the coil frame 5 is installed between the iron yoke 1 and the armature 6, and the coil frame 5 is used to support the structure of the coil 1 16 and the coil 2 17, and the coil frame 5 is also used to guide the armature 6 when the armature 6 moves; the coil 1 16 and the coil 2 17 are wound on the coil frame 5 in layers, and the coil 1 16 and the coil 2 17 are used to provide an electromagnetic field to the magnetic circuit of the electromagnet when and after the power is turned on;

[0007] Contact A8 and contact B9 are respectively connected to the leads of coil 2 17, and contact C10 and contact D11 are respectively connected to the leads of coil 1 16; when power is turned on, contact C10 and contact D11 are connected, and coil 2 17 provides an electromagnetic field after receiving external power. After the armature 6 moves into place, contact A8 and contact B9 are connected, and coil 1 16 provides a holding electromagnetic field.

[0008] Further, the energized coil switching power reduction type electromagnet further comprises: a connecting rod 15 and a connecting plate 12;

[0009] The connecting rod 15 is connected to the armature 6, and the connecting rod 15 is connected to the connecting plate 12; the contacts A8, B9, and C10 are located above the connecting plate 12, and the contact D11 is located below the connecting plate 12; after the armature 6 is energized and attracted, it drives the connecting rod 15 and the connecting plate 12 to move. During the movement of the connecting plate 12, the contacts A8 and B9 are connected, and the contacts C10 and D11 are disconnected, thereby realizing the switching process from coil 1 16 to coil 2 17.

[0010] Further, the energized coil switching power reduction type electromagnet further includes: a cover plate 13, a bushing 14;

[0011] The cover plate 13 is fixed on the iron yoke 1 through a fastener and a bushing 14. Optionally, the fastener is a screw 7.

[0012] The bushing 14 is used to support the structure of the cover plate 13 so that the cover plate 13 can be connected to the iron yoke 1. The cover plate 13 is used for product protection.

[0013] The diameter of the enameled wire used in coil 1 16 is thicker than the diameter of the enameled wire used in coil 2 17 .

[0014] Coil 1 16 and coil 2 17 use enameled wires of different diameters. Coil 1 16 is the main coil when the electromagnet is attracted. It uses enameled wire with a thicker wire diameter and has a stronger electromagnetic force when energized, and is used for the attraction of the electromagnet when energized. Coil 2 17 uses enameled wire with a thinner wire diameter and has a smaller working current. It is used to hold the armature 6 after the electromagnet is attracted. It has smaller power and lower coil heat generation, which can ensure that the electromagnet is in a held state and the coil heat generation is minimized.

[0015] Optionally, the diameter of the enameled wire used in coil 1 16 is 0.3-1 mm, and the diameter of the enameled wire used in coil 2 17 is 0.05-0.25 mm.

[0016] The elastic force of the spring 4 is determined according to the user's requirement for the electromagnet power-off time.

[0017] The greater the elastic force of spring 4, the shorter the corresponding power-off time; the smaller the elastic force of spring 4, the longer the corresponding power-off time.

[0018] The present invention provides an electromagnet with reduced power when switching a power-on coil. On the one hand, in order to solve the problem that a traditional electromagnet cannot work for a long time when powered on or the heating of the coil causes the whole product to heat up seriously affecting the service life due to the heating of the coil when working for a long time, according to the characteristics of the ampere-turns of the coil required when the electromagnet is in a maintained state after being attracted and does not need to be energized, the working coil is switched by switching the coil after being energized to reduce the heat generated by the coil and solve the problem that the service life of the product is affected by heating; on the other hand, the attraction and release time and the load capacity of the electromagnet with reduced power when powered on can be adjusted by changing the spring and the coil wire diameter to achieve the effect of adjustable time and electromagnetic force.

[0019] The power-on coil switching power reduction type electromagnet of the present invention has the characteristics of long continuous working time and strong load carrying capacity. The power-on coil switching power reduction type electromagnet of the present invention is well applied in the fields of industrial equipment, aviation and weapon assembly. The coil can also be flexibly adjusted according to actual needs, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an energized coil switching power reduction electromagnet provided by an embodiment of the present invention;

[0021] Among them, 1-iron yoke; 2-iron core; 3-butt joint; 4-spring; 5-coil frame; 6-armature; 7-screw; 8-contact A; 9-contact A; 10-contact C; 11-contact D; 12-connecting plate; 13-cover plate; 14-bushing; 15-connecting rod; 16-coil one; 17-coil two. DETAILED DESCRIPTION

[0022] The following will be combined with the flow chart of the method of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Existing electromagnets cannot be powered on for a long time or the heating of the coil causes the whole product to heat up, seriously affecting the service life. To address this problem, an electromagnet with reduced power switching of the powered coil provided in an embodiment of the present invention can completely solve this problem and greatly increase the service life of the electromagnet.

[0024] The present invention provides the following specific embodiments which can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0025] Figure 1The main structure of the electromagnet with reduced power of switched coil provided by the embodiment of the present invention includes: an iron yoke 1, an iron core 2, a butt joint 3, a spring 4, and an armature 6.

[0026] like Figure 1 In the structure diagram of the energized coil switching power reduction type electromagnet shown, the iron yoke 1 and the iron core 2 are connected together by threads, and the butt joint 3 is fixed together with the armature 6. The spring 4 is assembled between the armature 6 and the iron core 2 to provide a rebound force to the armature 6 when the power is off.

[0027] like Figure 1 As shown, the energized coil switching power reduction type electromagnet provided in the embodiment of the present invention further comprises: a coil frame 5.

[0028] Specifically, the coil frame 5 is assembled between the iron yoke 1 and the armature 6. The coil frame 5 is used to support the structure of the coil 1 16 and the coil 2 17. The coil frame 5 is also used to guide the armature 6 when it moves.

[0029] In one implementation of the embodiment of the present invention, Figure 1 As shown, the energized coil switching power reduction type electromagnet also includes: coil one 16 and coil two 17.

[0030] In this implementation, coil one 16 and coil two 17 are wound in layers on the coil frame 5, and coil one 16 and coil two 17 are respectively used to provide an attracting electromagnetic field to the magnetic circuit of the electromagnet when power is supplied and to provide a retaining electromagnetic field to the magnetic circuit of the electromagnet after power is supplied.

[0031] In one implementation of the embodiment of the present invention, Figure 1 As shown, the energized coil switching power reduction type electromagnet also includes: contact A8, contact B9, contact C10, and contact D11.

[0032] In this implementation, contact A8 and contact B9 are respectively connected to the lead wires of coil two 17 , and contact C10 and contact D11 are respectively connected to the lead wires of coil one 16 .

[0033] When power is turned on, the contact C10 and the contact D11 are connected, and the coil 2 17 provides an electromagnetic field after receiving external power. After the armature 6 moves into place, the contact A8 and the contact B9 are connected, and the coil 1 16 provides a holding electromagnetic field.

[0034] In one implementation of the embodiment of the present invention, Figure 1 As shown, the energized coil switching power reduction type electromagnet also includes: a connecting rod 15 and a connecting plate 12.

[0035] In this implementation, the connecting rod 15 and the armature 6 are connected by threads, and the connecting rod 15 and the connecting plate 12 are fixedly connected by threads. The contact A8, the contact B9, and the contact C10 are located above the connecting plate 12, and the contact D11 is located below the connecting plate 12.

[0036] When the armature 6 is energized and attracted, it drives the connecting rod 15 and the connecting plate 12 to move. During the movement of the connecting plate 12, the contacts A8 and B9 are connected, and the contacts C10 and D11 are disconnected, thereby realizing the switching process from coil 1 16 to coil 2 17.

[0037] In the specific implementation of the embodiment of the present invention, the elastic force of the spring 4 can be adjusted according to the user's demand for the electromagnet power-off time. The larger the elastic force of the spring 4, the shorter the corresponding power-off time, and the smaller the elastic force of the spring 4, the longer the corresponding power-off time.

[0038] Coil one 16 and coil two 17 use enameled wires of different diameters. Coil one 16 is the main coil when the electromagnet is attracted. It uses enameled wire with a thicker wire diameter. After power is turned on, it has a stronger electromagnetic force and is used for the attraction of the electromagnet when power is turned on. Coil two 17 uses enameled wire with a thinner wire diameter and has a smaller working current. It is used to hold the armature 6 after the electromagnet is attracted. It has smaller power and lower coil heating, which can ensure that the electromagnet is in a held state and the coil heat generation is minimal.

[0039] In one embodiment, the diameter of the enameled wire used in coil 1 16 is 0.3-1 mm, and the diameter of the enameled wire used in coil 2 17 is 0.05-0.25 mm.

[0040] In the embodiment of the present invention, after the coil 1 16 is energized and attracted, the armature 6 disconnects the contact A8 and the contact B9 through the connecting rod 15 and the connecting plate 12, and the coil 1 16 is disconnected, and the contact C10 and the contact D11 are connected at the same time, and the coil 2 17 is connected, and the coil 2 17 provides a holding electromagnetic field. Since the wire diameters of the coil 1 16 and the coil 2 17 are different, the corresponding powers are different. After the electromagnet coil is energized, the high-power coil 1 16 is switched to the low-power coil 2 17 through the mechanical conversion of the connecting rod 15 and the connecting plate 12, so as to reduce the heat generation of the product without affecting the function of the electromagnet and improve the service life of the product.

[0041] An embodiment of the present invention provides an electromagnet with reduced power when the coil is switched on. On the one hand, in order to solve the problem that traditional electromagnets cannot work for a long time when powered on or the heating of the coil causes the overall heating of the product to seriously affect the service life due to the heating of the coil after the electromagnet is attracted, according to the characteristics of the coil ampere-turns required when the electromagnet is in a maintained state without powering on after being energized, the working coil is switched after power is turned on to reduce the heating of the coil and solve the problem of the product life being affected by heating; on the other hand, the working time and load capacity of the electromagnet with reduced power when the coil is switched on can be adjusted by changing the spring and the coil to achieve an adjustable effect.

[0042] The energized coil switching power reduction type electromagnet of the present invention has the characteristics of long continuous working time and strong load carrying capacity. The energized coil switching power reduction type electromagnet provided by the present invention can be well applied in the fields of industrial equipment, aviation and weapon assembly, and the coil can be flexibly adjusted according to actual needs, and has good application prospects.

[0043] The specific implementation of the energized coil switching power reduction type electromagnet provided in the embodiment of the present invention is schematically described below through an implementation example.

[0044] Implementation Example

[0045] See also Figure 1 The energized coil switching power reduction type electromagnet shown in the embodiment specifically includes: an iron yoke 1, an iron core 2, a docking joint 3, a spring 4, a coil frame 5, an armature 6, a screw 7, a contact A8, a contact B9, a contact C10, a contact D11, a connecting plate 12, a cover plate 13, a bushing 14, a connecting rod 15, a coil one 16, and a coil two 17.

[0046] The iron yoke 1 is connected to the iron core 2 by threads, and the butt joint 3 is fixed to the armature 6. The spring 4 is assembled between the armature 6 and the iron core 2 to provide a rebound force to the armature when the power is off.

[0047] In this embodiment, the coil frame 5 is assembled between the iron yoke 1 and the armature 6. The coil frame 5 is used to support the structure of the coil 1 16 and the coil 2 17. The coil frame 5 is also used to guide the armature when it moves.

[0048] In this implementation example, coil one 16 and coil two 17 are wound in layers on a coil frame, and coil one 16 and coil two 17 are used to provide an electromagnetic field to the magnetic circuit of the electromagnet when power is supplied and after power is supplied, respectively.

[0049] In this embodiment, contact A8 and contact B9 are respectively connected to the lead wire of coil 2 17, and contact C10 and contact D11 are respectively connected to the lead wire of coil 1 16. When power is turned on, contact C10 and contact D11 are connected, coil 2 17 provides an electromagnetic field after receiving an external power source, and after the armature 6 moves to a certain position, contact A8 and contact B9 are connected, and coil 1 16 provides a holding electromagnetic field.

[0050] In this implementation example, the cover plate 13 is fixed to the iron yoke 1 by means of screws 7 and bushings 14. The bushings 14 are used to support the structure of the cover plate 13 so that the cover plate 13 can be connected to the iron yoke 1. The cover plate 13 is used for product protection.

[0051] In this implementation example, the connecting rod 15 and the armature 6 are connected by threads, and the connecting rod 15 and the connecting plate 12 are connected by threads. When the armature 6 is energized and attracted, it drives the connecting rod 15 and the connecting plate 12 to move. During the movement of the connecting plate 12, the contacts A8 and B9 are connected, and the contacts C10 and D11 are disconnected to realize the switching process from coil 1 16 to coil 2 17.

[0052] In the implementation example of the present invention, the elastic force of the spring 4 can be selected according to the user's demand for the power-off time of the electromagnet. The larger the elastic force of the spring, the shorter the corresponding power-off time, and the smaller the elastic force of the spring, the longer the corresponding power-off time.

[0053] In the embodiment of the present invention, coil 1 16 and coil 2 17 use enameled wires of different diameters. Coil 1 16 is the main coil when the electromagnet is attracted, and uses enameled wire with a thicker wire diameter. After being energized, it has a stronger electromagnetic force and is used for the attraction of the electromagnet when it is energized; coil 2 17 uses enameled wire with a thinner wire diameter and has a smaller working current. It is used to maintain the state of the armature 6 after the electromagnet is attracted, has a smaller power and lower coil heating, and can ensure that the electromagnet is energized to maintain the coil without damage.

[0054] Exemplarily, the energized coil switching power reduction type electromagnet provided by the present invention can be applied to electromagnets that are powered on for a long time, and can also be applied to electromagnets in normal working conditions.

[0055] This implementation example provides a specific structure of an electromagnet with reduced power switching of an energized coil. By designing the overall structure, coil structure, magnetic circuit structure, and conversion structure, the electromagnet coil is switched from one group of coils to another group of coils after being energized, thereby reducing the heating of the coils and solving the problem of the product life being affected by heating. In addition, the load capacity of the electromagnet with reduced power switching of an energized coil provided in the embodiment of the present invention can be adjusted by changing the spring and the coil to achieve an adjustable effect to meet the needs of different users. Specifically, it can be applied to a variety of places where electromagnets are energized for a long time, thereby increasing the scope of application of the electromagnet with reduced power switching of an energized coil.

[0056] The above is only a specific embodiment of the present invention, and the present invention is described in detail. The unexplained part is a conventional technology. However, the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An electromagnet with reduced power when switching an energized coil, characterized in that: include: Iron yoke (1), iron core (2), joint (3), spring (4), armature (6), coil frame (5), coil 1 (16), coil 2 (17), contact A (8), contact B (9), contact C (10), contact D (11); The iron yoke (1) is connected to the iron core (2), and the butt joint (3) is fixed to the armature (6); the spring (4) is mounted between the armature (6) and the iron core (2) and is used to provide a rebound force to the armature (6) when the power is off; the coil frame (5) is mounted between the iron yoke (1) and the armature (6); the coil 1 (16) and the coil 2 (17) are wound on the coil frame (5) in layers, and the coil 1 (16) and the coil 2 (17) are used to provide an electromagnetic field to the magnetic circuit of the electromagnet when the power is on and after the power is on, respectively; The contact A (8) and the contact B (9) are respectively connected to the lead wire of the coil 2 (17), and the contact C (10) and the contact D (11) are respectively connected to the lead wire of the coil 1 (16); when power is turned on, the contact C (10) and the contact D (11) are connected, and the coil 2 (17) provides an electromagnetic field after receiving an external power supply. After the armature (6) moves to a position, the contact A (8) and the contact B (9) are connected, and the coil 1 (16) provides a holding electromagnetic field.

2. The energized coil switching power reduction type electromagnet according to claim 1, characterized in that: Also includes: Connecting rod (15) and connecting plate (12); The connecting rod (15) is connected to the armature (6), and the connecting rod (15) is connected to the connecting plate (12); the contact A (8), the contact B (9), and the contact C (10) are located above the connecting plate (12), and the contact D (11) is located below the connecting plate (12); after the armature (6) is energized and attracted, it drives the connecting rod (15) and the connecting plate (12) to move, and during the movement of the connecting plate (12), the contact A (8) and the contact B (9) are connected, and the contact C (10) and the contact D (11) are disconnected, thereby realizing the switching process from energizing the coil one (16) to the coil two (17).

3. The energized coil switching power reduction type electromagnet according to claim 1, characterized in that: Also includes: Cover plate (13), bushing (14); The cover plate (13) is fixed on the iron yoke (1) via a fastener and a bushing (14).

4. The energized coil switching power reduction type electromagnet according to claim 1, characterized in that: The diameter of the enameled wire used in coil one (16) is thicker than the diameter of the enameled wire used in coil two (17).

5. The energized coil switching power reduction type electromagnet according to claim 4, characterized in that: The diameter of the enameled wire used in coil 1 (16) is 0.3-1 mm, and the diameter of the enameled wire used in coil 2 (17) is 0.05-0.25 mm.

6. The energized coil switching power reduction type electromagnet according to claim 1, characterized in that: The elastic force of the spring (4) is determined according to the user's requirement for the electromagnet power-off time.

7. The energized coil switching power reduction type electromagnet according to claim 6, characterized in that: The greater the elastic force of the spring (4), the shorter the corresponding power-off time; and the smaller the elastic force of the spring (4), the longer the corresponding power-off time.

8. The energized coil switching power reduction type electromagnet according to claim 3, characterized in that: The fastener is a screw (7).

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