Relay electromagnet

Abstract

The utility model discloses a relay electromagnet which comprises an iron core, a coil and a shell used for wrapping the coil, the shell comprises an upper cover plate, a lower cover plate and an outer shell, the outer shell is arranged between the upper cover plate and the lower cover plate, the shape of the outer shell is matched with that of the coil, the outer shell is arranged on the periphery of the coil in a covering mode, and the upper cover plate and the lower cover plate are both provided with magnetic conductive holes. The iron core is located between the upper cover plate and the lower cover plate, the two ends of the iron core are aligned with the magnetic conductive holes respectively, and the coil sleeves the outer side of the iron core. The coil has the advantages that the upper cover plate, the shell and the lower cover plate are matched to wrap the coil, so that the stability of the coil is improved, and the service life of the coil is prolonged; and meanwhile, the concentration ratio of a magnetic field can be guaranteed through cooperation of the arranged magnetic conductive hole and the iron core, the magnetic leakage rate of the electromagnet is reduced, and therefore attraction or thrust is improved.

Description

Technical Field

[0001] The utility model relates to the field of relays, in particular to a relay electromagnet. Background Art

[0002] A relay is an electrical control device, which mainly includes a housing, an electromagnet, an armature and contacts, wherein the electromagnet includes a coil and an iron core. When the coil is energized, a magnetic field is generated, which attracts the armature, thereby driving the moving contact to move, thereby connecting or disconnecting the circuit. Existing relay electromagnets will experience magnetic leakage during actual use, which will lead to a decrease in magnetic attraction ability, and greater power consumption is required to achieve a stronger attraction. At the same time, the electromagnet inside the existing relay is not easy to repair after packaging, and it is prone to shaking due to long-term power-on and power-off vibrations. In order to solve the above problems, a relay electromagnet is proposed. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a relay electromagnet which has a simple structure, is easy to use, has good stability and stable magnetic attraction strength.

[0004] In order to solve the above technical problems, the utility model solves the problems through the following technical solutions: a relay electromagnet, comprising an iron core and a coil, and also comprising a shell for wrapping the coil, the shell comprising an upper cover plate, a lower cover plate and an outer shell, the outer shell is arranged between the upper cover plate and the lower cover plate, the shape of the outer shell matches the coil and is covered on the peripheral side of the coil, the upper cover plate and the lower cover plate are both provided with magnetic conductive holes, the iron core is located between the upper cover plate and the lower cover plate, and the two ends of the iron core are respectively aligned with the magnetic conductive holes, and the coil is sleeved on the outside of the iron core.

[0005] Preferably, one end of the electromagnet passes through a corresponding magnetic conductive hole; the advantage is that the magnetic conductive hole can facilitate the magnetic field lines to pass through the iron core to enhance the suction or thrust of the electromagnet.

[0006] Preferably, a separator is provided between the coil and the iron core, and the separator is sleeved on the outside of the iron core; the advantage is that the coil and the iron core can be isolated by the provided separator, thereby reducing the friction of the iron core on the coil, and ensuring the service life and reliability of the coil.

[0007] Furthermore, an upper retaining ring and a lower retaining ring are respectively provided at the two ends of the separator, the upper retaining ring is located between the upper cover plate and the coil, and the upper retaining ring is in close contact with the coil and the upper cover plate, and the lower retaining ring is located between the lower cover plate and the coil, and the lower retaining ring is in close contact with the coil and the lower cover plate; the advantage is that the cooperation of the upper retaining ring and the lower retaining ring can ensure the stability of the coil and reduce the impact of vibration.

[0008] Furthermore, a limiting ring corresponding to the magnetic conductive hole is provided on the lower side of the upper cover plate, and a limiting platform corresponding to the limiting ring is provided on the separator, and the limiting ring is pressed on the upper side of the limiting platform; the advantage is that the cooperation between the limiting ring and the limiting platform can ensure that the upper cover plate after assembly can press the separator, thereby ensuring the stability of the separator and further maintaining the stability of the coil.

[0009] Furthermore, the separator has a receiving hole for accommodating the iron core, and the limit platform is arranged on the inner upper part of the receiving hole and is coaxially arranged with the receiving hole; the advantage is that by setting the limit platform in the receiving hole, it is ensured that the limit ring presses the limit platform while ensuring the contact area between the upper cover plate and the upper retaining ring, thereby increasing the reliability of the upper cover plate pressing the separator.

[0010] Furthermore, a positioning platform is provided at the lower part of the accommodating hole, and an anti-slipping piece corresponding to the positioning platform is provided at the lower part of the iron core; the advantage is that the practical reliability of the iron core can be guaranteed by the cooperation between the positioning platform and the anti-slipping piece, thereby preventing the iron core from slipping out of the accommodating hole.

[0011] Preferably, the shell is surrounded by metal strips, a plurality of fixing holes are arranged on the edge of one end of the shell, a connecting piece corresponding to the fixing holes is arranged at the other end of the shell, the connecting piece is embedded in the corresponding fixing hole, an upper plug-in and a lower plug-in are arranged on the upper side and the lower side of the shell respectively, the upper cover plate is provided with a corresponding upper socket, and the lower cover plate is provided with a corresponding lower socket; the advantage is that the stability of the shell after assembly can be ensured by cooperating with the set fixing holes and the connecting piece, and it is convenient for production and processing.

[0012] Preferably, two shells arranged side by side are provided between the upper cover plate and the lower cover plate, and coils and iron cores are provided in the shells. The advantage is that the space utilization efficiency can be effectively improved and the use functions can be enriched by the two shells arranged side by side and the coils and iron cores provided in the shells.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the coil can be wrapped by cooperating with the upper cover plate, the outer shell and the lower cover plate, thereby improving the stability and service life of the coil; at the same time, the cooperation of the magnetic conductive holes and the iron core can ensure the concentration of the magnetic field, reduce the magnetic leakage rate of the electromagnet, and thus improve the suction or thrust. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the assembly position of the separator of the utility model;

[0017] Figure 3 for Figure 2 A schematic cross-sectional structure diagram of ;

[0018] Figure 4 It is a schematic diagram of the positions of the upper cover plate and the lower cover plate of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the upper cover plate of the utility model;

[0020] Figure 6 It is a schematic diagram of the cooperation between the housing and the coil of the utility model. DETAILED DESCRIPTION

[0021] The utility model is described in further detail below in conjunction with the accompanying drawings.

[0022] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be used for other implementation schemes, variations, improvements, equivalent schemes, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0023] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0024] As attached Figure 1-6A relay electromagnet shown includes an iron core 2 and a coil 3, and a housing 1 for wrapping the coil 3. The housing 1 includes an upper cover plate 1.1, a lower cover plate 1.3 and a shell 1.2. The shell 1.2 is arranged between the upper cover plate 1.1 and the lower cover plate 1.3. The shape of the shell 1.2 matches the coil 3 and is covered on the peripheral side of the coil 3. The upper cover plate 1.1 and the lower cover plate 1.3 are both provided with magnetic holes 1.4. The iron core 2 is located between the upper cover plate 1.1 and the lower cover plate 1.3, and the two ends of the iron core 2 are respectively aligned with the magnetic holes 1.4, and the coil 3 is sleeved on the outside of the iron core 2. The upper cover plate 1.1, the shell 1.2 and the lower cover plate 1.3 can be used to wrap the coil 3, thereby improving the stability and service life of the coil 3; at the same time, the magnetic holes 1.4 and the iron core 2 can ensure the concentration of the magnetic field, reduce the magnetic leakage rate of the electromagnet, and thus improve the suction or thrust.

[0025] On the basis of the above, in order to ensure the attraction of the electromagnet to the relay armature, one end of the electromagnet is set to pass through the corresponding magnetic hole 1.4, so as to facilitate the magnetic field lines to concentrate through the iron core 2 and thus enhance the suction or thrust of the electromagnet.

[0026] In order to ensure the reliability of the coil 3 of this design, a separator 4 is provided between the coil 3 and the iron core 2. The separator 4 is sleeved on the outside of the iron core 2. The coil 3 and the iron core 2 are isolated by the separator 4, thereby reducing the friction of the iron core 2 on the coil 3, and ensuring the service life and reliability of the coil 3. Furthermore, the two ends of the separator 4 are respectively provided with an upper retaining ring 4.1 and a lower retaining ring 4.2. The upper retaining ring 4.1 is located between the upper cover plate 1.1 and the coil 3, and the upper retaining ring 4.1 fits with the coil 3 and the upper cover plate 1.1. The lower retaining ring 4.2 is located between the lower cover plate 1.3 and the coil 3, and the lower retaining ring 4.2 fits with the coil 3 and the lower cover plate 1.3. To be more specific, a limiting ring 1.11 corresponding to the magnetic hole 1.4 is provided on the lower side of the upper cover plate 1.1, and a limiting platform 4.4 corresponding to the limiting ring 1.11 is provided on the separator 4.4. The limiting ring 1.11 is pressed on the upper side of the limiting platform 4.4. The cooperation between the limiting ring 1.11 and the limiting platform 4.4 can ensure that the upper cover plate 1.1 after assembly can press the separator 4, thereby ensuring the stability of the separator 4 and further maintaining the stability of the coil 3.

[0027] On the basis of the above, in order to further ensure that the upper cover 1.1 presses the partition 4, the partition 4 has a receiving hole 4.3 for accommodating the iron core 2, and the limit platform 4.4 is arranged on the inner upper part of the receiving hole 4.3 and is coaxially arranged with the receiving hole 4.3. The limit platform 4.4 is arranged in the receiving hole 4.3 to ensure that the limit ring 1.11 presses the limit platform 4.4 while ensuring the contact area between the upper cover 1.1 and the upper retaining ring 4.1, thereby increasing the reliability of the upper cover 1.1 pressing the partition 4.

[0028] It is worth mentioning that, on the basis of the above, in order to ensure the reliability of the use of the iron core 2, a positioning platform 4.5 is provided at the lower part of the accommodating hole 4.3, and an anti-slip component 2.1 corresponding to the positioning platform 4.5 is provided at the lower part of the iron core 2 to prevent the iron core 2 from slipping out of the accommodating hole 4.3.

[0029] The shell 1.2 of the present design is surrounded by metal strips, and a plurality of fixing holes are arranged on the edge of one end of the shell 1.2, and a connecting piece 1.21 corresponding to the fixing holes is arranged at the other end of the shell 1.2, and the connecting piece 1.21 is embedded in the corresponding fixing hole. An upper plug-in 1.22 and a lower plug-in 1.23 are respectively arranged on the upper side and the lower side of the shell 1.2, and a corresponding upper plug-in 1.12 is arranged on the upper cover plate 1.1, and a corresponding lower plug-in 1.31 is arranged on the lower cover plate 1.3. The cooperation between the fixing holes and the connecting piece 1.21 can ensure the stability of the shell 1.2 after assembly, and facilitate production and processing.

[0030] It is worth mentioning that in order to facilitate the production of expansion functions, two side-by-side outer shells 1.2 are arranged between the upper cover plate 1.1 and the lower cover plate 1.3, and corresponding coils 3 and iron cores 2 are arranged in the outer shells 1.2. The two side-by-side outer shells 1.2 and the coils 3 and iron cores 2 arranged in the outer shells 1.2 can effectively improve the space utilization efficiency and enrich the use functions.

[0031] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.

Claims

1. A relay electromagnet, comprising an iron core and a coil, It is characterized in that It also includes a shell for wrapping the coil, the shell includes an upper cover plate, a lower cover plate and an outer shell, the outer shell is arranged between the upper cover plate and the lower cover plate, the shape of the outer shell matches the coil and is covered on the circumference of the coil, the upper cover plate and the lower cover plate are both provided with magnetic holes, the iron core is located between the upper cover plate and the lower cover plate, and the two ends of the iron core are respectively aligned with the magnetic holes, and the coil is sleeved on the outside of the iron core.

2. A relay electromagnet according to claim 1, It is characterized in that Two groups of shells distributed side by side are arranged between the upper cover plate and the lower cover plate, and coils and iron cores are arranged in the shells.

3. A relay electromagnet according to claim 1, It is characterized in that One end of the electromagnet passes through the corresponding magnetic conductive hole.

4. A relay electromagnet according to claim 1, It is characterized in that A separator is arranged between the coil and the iron core, and the separator is sleeved on the outside of the iron core.

5. A relay electromagnet according to claim 4, It is characterized in that An upper retaining ring and a lower retaining ring are respectively arranged at the two ends of the separator, the upper retaining ring is located between the upper cover plate and the coil, and the upper retaining ring is in close contact with the coil and the upper cover plate, and the lower retaining ring is located between the lower cover plate and the coil, and the lower retaining ring is in close contact with the coil and the lower cover plate.

6. A relay electromagnet according to claim 4, It is characterized in that The lower side of the upper cover plate is provided with a limiting ring corresponding to the magnetic conductive hole, the separator is provided with a limiting platform corresponding to the limiting ring, and the limiting ring is pressed on the upper side of the limiting platform.

7. A relay electromagnet according to claim 6, It is characterized in that The separator has a receiving hole for receiving the iron core, and the limiting platform is arranged at the inner upper part of the receiving hole and is coaxially arranged with the receiving hole.

8. A relay electromagnet according to claim 7, It is characterized in that A positioning platform is arranged at the lower part of the accommodating hole, and an anti-dropping piece corresponding to the positioning platform is arranged at the lower part of the iron core.

9. A relay electromagnet according to claim 1, It is characterized in that The shell is surrounded by metal strips, a plurality of fixing holes are arranged on the edge of one end of the shell, a connecting piece corresponding to the fixing holes is arranged at the other end of the shell, the connecting piece is embedded in the corresponding fixing hole, an upper plug-in and a lower plug-in are arranged on the upper side and the lower side of the shell respectively, a corresponding upper plug-in is arranged on the upper cover plate, and a corresponding lower plug-in is arranged on the lower cover plate.

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