Solenoid type magnetic system

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a solenoid type magnetic system. The solenoid type magnetic system comprises a magnetic conduction cylinder, and an iron stopping piece is arranged at the bottom in the magnetic conduction cylinder. The electromagnetic driving assembly is arranged in the magnetic conductive cylinder; the cover plate covers the opening of the magnetic conductive cylinder; the first end of the armature column sequentially penetrates through the cover plate and the electromagnetic driving assembly and is stopped on the iron stopping piece, and the electromagnetic driving assembly is used for driving the armature column to move towards the iron stopping piece; the armature column is sleeved with the elastic piece, the two ends of the elastic piece abut against the second end of the armature column and the cover plate respectively, and the elastic piece has the trend that the armature column moves away from the iron stopping piece. Normal work of the movable iron core is guaranteed, abrasion is reduced, the service life is prolonged, and assembly difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a solenoid type magnetic system. Background Art

[0002] Electromagnetic relay is an electronic control device, which has a control system (also known as input circuit) and a controlled system (also known as output circuit). It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current and a lower voltage to control a larger current and a higher voltage.

[0003] The electromagnetic relay with application number CN200780016307.9 in the prior art uses an electromagnet to control the on-off switch of a working circuit, and discloses that under the drive of an electromagnet assembly, a movable iron core can approach or move away from a fixed iron core. A reset spring is provided in the gap between the movable iron core and the fixed iron core, thereby realizing the function of automatically resetting the movable iron core after the electromagnet assembly is powered off.

[0004] However, when the movable iron core and the return spring are not on the same axis due to installation errors, the return spring is prone to bending when the movable iron core moves downward and presses against the return spring, and it is impossible to ensure that the movable iron core is only subjected to vertical upward force, which can easily cause wear between the movable iron core and the corresponding guide groove side wall surface; and the return spring in the prior art is located in the coil frame of the electromagnet assembly. Due to the narrow internal space of the coil frame, special tools are required to assemble the return spring into place. Utility Model Content

[0005] The utility model aims to provide a solenoid type magnetic system, which can ensure the normal operation of a movable iron core, reduce wear and tear, extend the service life, and reduce the difficulty of assembly.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Solenoid type magnetic system, comprising:

[0008] Magnetic cylinder;

[0009] An iron stopper, arranged at the bottom of the magnetic conductive cylinder;

[0010] An electromagnetic drive component, wherein the electromagnetic drive component is disposed in the magnetic conductive cylinder;

[0011] A cover plate, arranged to cover the opening of the magnetic conductive cylinder;

[0012] An armature column, a first end of which passes through the cover plate and the electromagnetic drive assembly in sequence and is stopped at the iron stop member, and the electromagnetic drive assembly is used to drive the armature column to move toward the iron stop member;

[0013] An elastic member is sleeved on the armature column, and two ends of the elastic member are respectively in contact with the second end of the armature column and the cover plate, and the elastic member has a tendency to move the armature column away from the iron stop member.

[0014] As an optional solution for the solenoid magnetic system, a guide groove is recessed at the center of the first end of the armature column, and a guide protrusion is protruded at the center of the iron stop member, and the guide protrusion can be inserted into the guide groove.

[0015] As an optional solution for the solenoid magnetic system, the guide protrusion is a frustum structure.

[0016] As an optional solution for the solenoid magnetic system, a flange is provided at the second end of the armature column along the circumferential direction, and one end of the elastic member abuts against the flange.

[0017] As an optional solution for the solenoid magnetic system, the electromagnetic drive assembly includes a coil frame and a coil, the coil frame includes a winding tube and a first plate and a second plate arranged at opposite ends of the winding tube, and the coil is wound on the outer wall of the winding tube.

[0018] As an optional solution for the solenoid magnetic system, pedestals are provided on opposite sides of the first plate, and cutouts are provided on opposite sides of the circumferential wall of the magnetic conductive cylinder. The pedestals penetrate the cutouts (13) and are clamped with the cutouts.

[0019] As an optional solution for the solenoid magnetic system, the solenoid magnetic system further includes a connection terminal, a limiting groove is recessed on the outer side wall of the pedestal, and the connection terminal is inserted into the limiting groove and electrically connected to the coil.

[0020] As an optional solution for the solenoid magnetic system, each of the inner side walls of the pedestal is provided with a positioning portion, and opposite sides of the outer wall of the cover are provided with a clamping groove, and the positioning portion is clamped with the clamping groove.

[0021] As an optional solution for the solenoid magnetic system, a protrusion is provided on the first plate, a positioning hole is provided on the cover plate, and the protrusion is inserted into the positioning hole.

[0022] As an optional solution for the solenoid magnetic system, at least two protrusions are provided on the first plate, at least two positioning holes are provided on the cover plate, and the protrusions are plugged into the positioning holes in a one-to-one correspondence.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The solenoid magnetic system provided by the utility model has an iron stop installed at the bottom of the magnetic cylinder, an electromagnetic drive assembly is arranged in the magnetic cylinder, and a cover plate is arranged on the opening of the magnetic cylinder, wherein the first end of the armature column passes through the cover plate and the electromagnetic drive assembly in sequence and can abut against the iron stop, and the elastic member is sleeved on the armature column, and the opposite two ends of the elastic member abut against the second end of the armature column and the cover plate respectively, so that the elastic member can always maintain a vertical state and will not bend even if it is compressed, which not only limits the armature column to move up and down along the same axis, ensuring the normal operation of the movable iron core, reducing wear and extending the service life, but also the installation position of the elastic member is located outside the entire solenoid magnetic system, reducing the difficulty of installing the elastic member; the electromagnetic drive assembly is arranged in the magnetic cylinder to prevent the electromagnetic drive assembly from being collided or squeezed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a solenoid type magnetic system in an embodiment of the utility model;

[0026] Figure 2 It is a first exploded schematic diagram of a solenoid type magnetic system in an embodiment of the utility model;

[0027] Figure 3 It is a second exploded schematic diagram of the solenoid type magnetic system in the embodiment of the utility model;

[0028] Figure 4 It is a bottom view of the solenoid type magnetic system in the embodiment of the utility model;

[0029] Figure 5 yes Figure 4 Sectional view along AA direction.

[0030] In the figure:

[0031] 1. Magnetic cylinder; 2. Iron stopper; 3. Cover plate; 4. Armature column; 5. Elastic part; 6. Coil frame; 7. Coil; 8. Terminal block;

[0032] 11. Accommodating cavity; 12. Opening; 13. Incision; 14. Second heat dissipation hole; 15. Assembly hole;

[0033] 21. Guide protrusion;

[0034] 31. through hole; 32. positioning hole; 33. first heat dissipation hole; 34. card slot;

[0035] 41. guide groove; 42. flange;

[0036] 61. bobbin; 62. first plate; 621. protrusion; 63. second plate; 64. pedestal; 641. limiting groove; 642. positioning portion; 65. sleeve. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0041] In order to ensure the normal operation of the movable iron core, reduce wear and extend the service life, and reduce the difficulty of assembly, this embodiment provides a solenoid magnetic system, which is combined with Figures 1 to 5 The specific contents of this embodiment are described in detail.

[0042] In this embodiment, if Figures 1 to 4As shown, the solenoid magnetic system includes a magnetic cylinder 1, an iron stop 2, an electromagnetic drive assembly, a cover plate 3, an armature column 4 and an elastic member 5. A receiving chamber 11 is provided in the magnetic cylinder 1, and an opening 12 is provided on the magnetic cylinder 1, and the opening 12 is connected to the receiving chamber 11. The iron stop 2 is arranged at the bottom of the receiving chamber 11 of the magnetic cylinder 1. The electromagnetic drive assembly is arranged in the receiving chamber 11 of the magnetic cylinder 1. The cover plate 3 is covered at the opening 12 of the magnetic cylinder 1, and a through hole 31 is provided on the cover plate 3, and the through hole 31, the electromagnetic drive assembly and the iron stop 2 are coaxially arranged. The first end of the armature column 4 passes through the through hole 31 of the cover plate 3 and the electromagnetic drive assembly and stops at the top of the iron stop 2. The elastic member 5 is sleeved on the armature column 4, and the two ends of the elastic member 5 are respectively abutted against the second end of the armature column 4 and the cover plate 3, and the elastic member 5 specifically makes the armature column 4 move away from the iron stop 2.

[0043] In short, the solenoid magnetic system provided by the utility model has an iron stop 2 installed at the bottom of the magnetic cylinder 1, an electromagnetic drive assembly is arranged in the magnetic cylinder 1, and a cover plate 3 is arranged on the opening 12 of the magnetic cylinder 1, wherein the first end of the armature column 4 passes through the through hole 31 on the cover plate 3 and the electromagnetic drive assembly in sequence and can abut against the iron stop 2, and the elastic member 5 is sleeved on the armature column 4, and the opposite ends of the elastic member 5 abut against the second end of the armature column and the cover plate 3 respectively, so that the elastic member 5 can always maintain a vertical state and will not bend even if it is compressed, which not only limits the armature column 4 to move up and down along the same axis, ensuring the normal operation of the movable iron core, reducing wear and extending the service life, but also the installation position of the elastic member 5 is located outside the entire solenoid magnetic system, reducing the difficulty of installing the elastic member 5. In addition, in this embodiment, the electromagnetic drive assembly is arranged in the magnetic cylinder 1 to prevent the electromagnetic drive assembly from being collided or squeezed.

[0044] Furthermore, if Figure 2 and Figure 5 As shown, a guide groove 41 is concavely provided at the center of the first end of the armature column 4, and a guide protrusion 21 is convexly provided at the center of the iron stop 2, and the guide protrusion 21 can be inserted into the guide groove 41. Since the armature column 4 is penetrated by the armature column 4 and the electromagnetic drive assembly and stopped at the iron stop 2, the guide groove 41 and the guide protrusion 21 are adapted in shape, so the central axis of the guide groove 41 and the guide protrusion 21 in this embodiment coincide. After the electromagnetic drive assembly is powered on, the armature column 4 moves downward. Since the guide groove 41 and the guide protrusion 21 are adapted in shape, after the guide protrusion 21 is inserted into the guide groove 41, the armature column 4 can be restricted from shaking left and right, so as to further ensure that the armature column 4 moves only in the vertical direction.

[0045] Exemplarily, the guide protrusion 21 is a truncated cone structure. Since the diameter of the upper end of the truncated cone structure is smaller than the diameter of the lower end, as the armature column 4 moves downward, the guide protrusion 21 is gradually inserted into the guide groove 41, and as the armature column 4 moves downward, the greater the insertion force between the guide protrusion 21 and the guide groove 41. The assembly hole 15 of the iron stop 2 and the magnetic tube 1 can be connected by, but not limited to, riveting, welding, interference fit, screw connection, etc.

[0046] Furthermore, if Figure 2 As shown, the second end of the armature column 4 is provided with a flange 42 along the circumferential direction, one end of the elastic member 5 is in contact with the flange 42, and the other end of the elastic member 5 is in contact with the cover plate 3. Specifically, in this embodiment, the elastic member 5 is a spring, and by adding a flange 42 to the second end of the armature column 4, wherein the outer diameter of the flange 42 is greater than the outer diameter of the elastic member 5, it is ensured that the spring will not fall off the armature column 4 during use. In other embodiments, the upper end of the elastic member 5 can be limited by the flange 42 of the armature column 4, or by other parts such as a contact support connected to the moving iron core. The lower end can be limited by the yoke sheet, or by the coil skeleton 6, the yoke sheet or other parts connected to the coil skeleton 6.

[0047] Specifically, Figure 2 and Figure 3 As shown, the electromagnetic drive assembly includes a coil frame 6 and a coil 7. The coil frame 6 includes a winding tube 61 and a first plate 62 and a second plate 63 arranged at opposite ends of the winding tube 61. The coil 7 is wound on the outer wall surface of the winding tube 61. The winding tube 61 is hollow inside and is used for the armature column 4 to move up and down. Furthermore, a sleeve 65 is provided on the first plate 62, and the sleeve 65 is connected with the winding tube 61 up and down. When the cover plate 3 is covered at the opening 12 of the magnetic cylinder 1, the through hole 31 of the cover plate 3 is sleeved with the upper end of the sleeve 65, which ensures the stability of the connection between the cover plate 3 and the coil frame 6.

[0048] Furthermore, pedestals 64 are provided on opposite sides of the first plate 62, and cutouts 13 are provided on opposite sides of the circumferential wall of the magnetic cylinder 1, and the pedestals 64 are engaged with the cutouts 13. The cooperation between the pedestals 64 and the cutouts 13 is used to limit the position of the coil frame 6 in the magnetic cylinder 1 to ensure installation accuracy.

[0049] Furthermore, the solenoid magnetic system further includes a terminal 8, and a limiting groove 641 is recessed on the outer wall of the base 64. The terminal 8 is inserted into the limiting groove 641 and electrically connected to the coil 7 to ensure the connection stability between the terminal 8 and the base 64 and the normal power supply of the coil 7, and to prevent the terminal 8 from falling. In this embodiment, one end of the terminal 8 is a bent portion, and the bent portion can be interference-fitted with the limiting groove 641.

[0050] Furthermore, each pedestal 64 has a positioning portion 642 on its inner side wall, and the cover plate 3 has a clamping groove 34 on opposite sides of its outer wall, and the positioning portion 642 is clamped with the clamping groove 34. The positioning portion 642 and the clamping groove 34 are used to achieve positioning by shape, thereby ensuring the installation stability of the cover plate 3.

[0051] Furthermore, a protrusion 621 is provided on the first plate 62, and a positioning hole 32 is provided on the cover plate 3, and the protrusion 621 is inserted into the positioning hole 32. Through the cooperation between the protrusion 621 and the positioning hole 32, the installation accuracy of the cover plate 3 is further guaranteed.

[0052] Furthermore, at least two protrusions 621 are provided on the first plate 62, and at least two positioning holes 32 are provided on the cover plate 3, and the protrusions 621 are plugged into the positioning holes 32 in a one-to-one correspondence. Through the cooperation between the multiple protrusions 621 and the multiple positioning holes 32, it is ensured that the cover plate 3 does not rotate, and the installation position of the cover plate 3 and the coil skeleton 6 on the magnetic tube 1 does not move.

[0053] Alternatively, if Figure 3 As shown, a plurality of first heat dissipation holes 33 are provided on the cover plate 3, and a plurality of second heat dissipation holes 14 are provided on the magnetic cylinder 1, so as to facilitate heat dissipation and cooling of the electromagnetic drive component. Optionally, a plurality of second heat dissipation holes 14 are provided at the connection transition between the circumferential wall and the bottom wall of the magnetic cylinder 1, so as to accelerate the cooling of the electromagnetic drive component.

[0054] In summary, when the solenoid magnetic system in this embodiment is working, when the coil 7 is energized, the armature column 4 will move downward, so that the armature column 4 and the iron stop 2 are closed, and the elastic member 5 is compressed downward to connect the circuit; when the coil 7 is de-energized, the elastic member 5 causes the armature column 4 to move upward to disconnect the circuit.

[0055] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A solenoid magnetic system, characterized in that: Also includes: Magnetic conductive cylinder (1); An iron stopper (2) is arranged at the bottom of the magnetic conductive cylinder (1); An electromagnetic drive component, wherein the electromagnetic drive component is arranged in the magnetic conductive cylinder (1); A cover plate (3) is arranged to cover the opening (12) of the magnetic conductive cylinder (1); An armature column (4), wherein a first end of the armature column (4) passes through the cover plate (3) and the electromagnetic drive assembly in sequence and is stopped at the iron stop member (2), and the electromagnetic drive assembly is used to drive the armature column (4) to move toward the iron stop member (2); An elastic member (5) is sleeved on the armature column (4), and two ends of the elastic member (5) are respectively in contact with the second end of the armature column (4) and the cover plate (3), and the elastic member (5) has a tendency to move the armature column away from the iron stop member.

2. The solenoid magnetic system according to claim 1, characterized in that A guide groove (41) is recessed at the center of the first end of the armature column (4), and a guide protrusion (21) is convexly disposed at the center of the iron stop member (2), and the guide protrusion (21) can be inserted into the guide groove (41).

3. The solenoid magnetic system according to claim 2, characterized in that The guide protrusion (21) is a truncated cone structure.

4. The solenoid magnetic system according to claim 1, characterized in that The second end of the armature column (4) is provided with a flange (42) along the circumferential direction, and one end of the elastic member (5) abuts against the flange (42).

5. The solenoid magnetic system according to claim 1, characterized in that The electromagnetic drive assembly comprises a coil frame (6) and a coil (7); the coil frame (6) comprises a winding tube (61) and a first plate (62) and a second plate (63) arranged at opposite ends of the winding tube (61); and the coil (7) is wound around the outer wall surface of the winding tube (61).

6. The solenoid magnetic system according to claim 5, characterized in that The first plate (62) is provided with a pedestal (64) on two opposite sides, the magnetic conductive cylinder (1) is provided with a notch (13) on two opposite sides of the circumferential wall, and the pedestal (64) passes through the notch (13) and is snap-connected with the notch (13).

7. The solenoid magnetic system according to claim 6, characterized in that The solenoid magnetic system also includes a connection terminal (8); a limiting groove (641) is recessed on the outer side wall of the pedestal (64); the connection terminal (8) is inserted into the limiting groove (641) and is electrically connected to the coil (7).

8. The solenoid magnetic system according to claim 6, characterized in that The inner side wall of each of the pedestals (64) is provided with a positioning portion (642), and opposite sides of the outer wall surface of the cover plate (3) are provided with a clamping groove (34), and the positioning portion (642) is clamped with the clamping groove (34).

9. The solenoid magnetic system according to claim 5, characterized in that The first plate (62) is provided with a protrusion (621), the cover plate (3) is provided with a positioning hole (32), and the protrusion (621) is inserted into the positioning hole (32).

10. The solenoid magnetic system according to claim 9, characterized in that The first plate (62) is provided with at least two protrusions (621), the cover plate (3) is provided with at least two positioning holes (32), and the protrusions (621) are plugged into the positioning holes (32) in a one-to-one correspondence.

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