Coil and relay

Abstract

The utility model provides a coil and a relay. The coil comprises a skeleton, an iron core and a coil. The framework is provided with a winding part, and the middle of the winding part is hollow; the iron core is arranged on the framework, and a part of the iron core is located in the winding part; the coil is wound on the outer sides of the winding part and the iron core; the volume of the coil is small, when the relay is assembled, the enameled wire of the coil is not contacted with the base and is not scratched off, and a gap is reserved between the outer side of the coil and the inner side of the base, so that when the coil is electrified, the base is not electrified, namely the relay is not electrified, and potential safety hazards do not exist; moreover, a magnetic field generated by electrifying the coil is not affected, the armature can act under the action of the magnetic field, and the relay plays a role.

Description

Technical Field

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

[0002] A relay (English name: relay) is an electrical control device. It is an electrical appliance that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity (excitation quantity) reaches the specified requirement. It has an interactive relationship between the control system (also known as the input circuit) and the controlled system (also known as the output circuit). It is usually used in automated control circuits. It is actually an "automatic switch" that uses a small current to control the operation of a large current. It plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit.

[0003] The coil of a relay generally includes a skeleton, a coil and an iron core. A accommodating groove is provided on the skeleton, and part of the iron core is assembled in the accommodating groove. The coil is wound around the accommodating groove of the skeleton and the outside of the iron core part at that position. The size of the inner circle of the coil is the sum of the thickness of the iron core part at that position and the wall thickness of the accommodating groove. The inner circle of the coil is relatively large, and in order to ensure that the coil can generate sufficient suction force, the number of turns of the coil is a fixed value. When the inner circle of the coil is relatively large, the outer circle of the coil will also be relatively large. In this way, the size of the entire coil will be relatively large. In the actual assembly process, the coil will contact the inner side of the base, and the enameled wire of the coil will easily be scratched off by the base. The metal wire inside the coil contacts the base. If the coil is energized, it is easy to cause the base to be energized, and then the entire relay is energized, which poses a safety hazard; and, the metal wire inside the coil contacts the base, which will also affect the magnetic field generated by the coil, and the relay cannot function and cannot control the action of the controlled system. Utility Model Content

[0004] In order to overcome at least one of the defects described in the above-mentioned prior art, the present invention provides a coil and a relay. The coil of the present invention is relatively small in size. When assembling the relay, the enameled wire of the coil will not contact the base and will not be scratched off. A gap is left between the outside of the coil and the inside of the base. In this way, when the coil is energized, the base will not be energized, that is, the relay will not be energized, and there is no safety hazard. In addition, the magnetic field generated by the coil being energized will not be affected, and the armature can move under the action of the magnetic field, and the relay will function.

[0005] The technical solution adopted by the present invention to solve its technical problems is:

[0006] In a first aspect, a wire package is proposed, comprising a skeleton, an iron core and a coil; the skeleton has a winding portion, which is hollow in the middle; the iron core is arranged on the skeleton, and a part of the iron core is located in the winding portion; the coil is wound on the outside of the winding portion and the iron core.

[0007] Furthermore, the skeleton also has a first mounting portion and a second mounting portion, the winding portion includes two connecting rods extending along the first direction, the two connecting rods are arranged at intervals along the second direction, the first direction is perpendicular to the second direction, wherein the first end of each connecting rod is connected to the first mounting portion, and the second end of each connecting rod is connected to the second mounting portion, the two connecting rods, the first mounting portion and the second mounting portion form a hollow through-cavity, and a part of the iron core is embedded in the through-cavity.

[0008] Furthermore, the iron core includes a first bending portion, a connecting portion and a second bending portion, and the two ends of the connecting portion are respectively connected to the first end of the first bending portion and the first end of the second bending portion; the two opposite sides of the connecting portion along the first direction are respectively attached to the relative inner sides of the two connecting rods, and the coil is wound around the outside of the two connecting rods and the connecting portion.

[0009] Furthermore, in a third direction perpendicular to the first direction and perpendicular to the second direction, the thickness of the connecting rod is adapted to the thickness of the connecting portion.

[0010] Furthermore, the thickness of the connecting rod is equal to the thickness of the connecting portion.

[0011] Furthermore, in the third direction, the thickness of the connecting rod is between 0.8 mm and 1.4 mm.

[0012] Furthermore, a first notch is provided on the first mounting portion, and a second notch is provided on the second mounting portion. The first notch and the second notch are respectively connected to the two through cavities. The connection between the first bending portion and the connecting portion is located at the first notch, and the connection between the second bending portion and the connecting portion is located at the second notch.

[0013] Furthermore, along the third direction, the thickness of the first mounting portion and the thickness of the second mounting portion are both greater than the thickness of the coil.

[0014] In a second aspect, the present invention further provides a relay, which is applied with the coil as described in the first aspect.

[0015] Furthermore, the relay further includes a base, the coil is mounted on the base, and a gap is left between the outer side of the coil and the inner side of the base.

[0016] The utility model provides a coil and a relay, which have the following advantages compared with the prior art:

[0017] The wire package of the present invention includes a skeleton, an iron core and a coil. The skeleton has a winding part, which is hollow in the middle. The iron core is arranged on the skeleton, and a part of the iron core is located in the winding part. The coil is wound on the outside of the winding part and the iron core. The size of the inner circle of the coil is the thickness of the winding part of the skeleton or the thickness of the iron core part at the winding part. The inner circle size of the coil is relatively small. Correspondingly, the outer circle of the coil is also relatively small, and the size of the entire wire package is relatively small. When assembling this relay, the wire package will not contact the base - the enameled wire of the coil will not contact the base and will not be scratched off. In this way, when the coil is energized, the base will not be energized, that is, the relay will not be energized, and there is no safety hazard. In addition, the magnetic field generated by the coil being energized will not be affected, and the relay will function to control the action of the controlled system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a relay according to an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 The internal structure diagram of the relay shown in FIG;

[0020] Figure 3 for Figure 2 A cross-sectional view of the relay shown in FIG. 1 with the coil positioned;

[0021] Figure 4 for Figure 2 A schematic structural diagram of the skeleton of the relay shown in FIG;

[0022] Figure 5 for Figure 2 Schematic diagram of the assembly relationship between the iron core and the coil of the relay shown in;

[0023] Figure 6 for Figure 2 A cross-sectional view of the relay shown in FIG. 1 with the relay located at the pusher position;

[0024] The meanings of the reference numerals are as follows:

[0025] 1. Base; 2. Skeleton; 3. Coil; 4. Core; 5. Winding portion; 6. Armature; 7. Moving spring; 8. Stationary spring; 9. First bending portion; 10. Connecting portion; 11. Second bending portion; 12. First mounting portion; 13. Second mounting portion; 14. Pusher; 15. Cover; 16. Giving way slope; 17. Contact; 18. Connecting rod; 19. First notch; 20. Second notch; 21. Through-hole; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0026] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0029] like Figures 1-6 As shown in the figure, an embodiment of the utility model proposes a wire package in the first aspect, including a skeleton 2, an iron core 4 and a coil 3, the skeleton 2 has a winding portion 5, the winding portion 5 is hollow in the middle, the iron core 4 is arranged on the skeleton 2, and a part of the iron core 4 is located in the winding portion 5, and the coil 3 is wound on the outside of the winding portion 5 and the iron core 4.

[0030] Based on the above technical solution, the coil 3 is wound on the outside of the winding part 5 and the iron core 4. The size of the inner circle of the coil 3 is the thickness of the winding part 5 of the skeleton 2 or the thickness of the iron core 4 at the position of the winding part 5. The size of the inner circle of the coil 3 is relatively small. Correspondingly, the outer circle of the coil 3 is also relatively small, and the size of the entire coil package is relatively small.

[0031] In the second aspect, an embodiment of the present invention further proposes a relay, which uses a coil as in the first aspect; the relay also includes a base 1, the coil is installed on the base 1, and a gap is left between the outer side of the coil 3 and the inner side of the base 1.

[0032] When assembling this relay, the coil will not come into contact with the base 1 - the enameled wire of the coil 3 will not come into contact with the base 1 and will not be scratched off. In this way, when current is passed through the coil 3, the base 1 will not be energized, that is, the relay will not be energized, and there will be no safety hazard. In addition, the magnetic field generated by the coil 3 being energized will not be affected, and the relay can function and control the operation of the controlled system.

[0033] The skeleton 2 of the present wire package also has a first mounting portion 12 and a second mounting portion 13. The winding portion 5 includes two connecting rods 18 extending along the first direction X. The two connecting rods 18 are arranged at intervals along the second direction Y. The first direction X is perpendicular to the second direction Y. The first end of each connecting rod 18 is connected to the first mounting portion 12, and the second end of each connecting rod 18 is connected to the second mounting portion 13. The two connecting rods 18, the first mounting portion 12 and the second mounting portion 13 form a hollow through-cavity 21, and a portion of the iron core 4 is embedded in the through-cavity 21.

[0034] Correspondingly, the iron core 4 includes a first bending portion 9, a connecting portion 10 and a second bending portion 11, and the two ends of the connecting portion 10 are respectively connected to the first end of the first bending portion 9 and the first end of the second bending portion 11; the two opposite sides of the connecting portion 10 along the first direction X are respectively attached to the relative inner sides of the two connecting rods 18, and the coil 3 is wound on the outside of the two connecting rods 18 and the connecting portion 10.

[0035] Furthermore, in a third direction Z that is perpendicular to the first direction X and the second direction Y, the thickness of the connecting rod 18 is adapted to the thickness of the connecting portion 10 .

[0036] In some embodiments, the thickness of the connecting rod 18 is equal to the thickness of the connecting portion 10 .

[0037] Preferably, in the third direction Z, the thickness of the connecting rod 18 is between 0.8 mm and 1.4 mm. In order to facilitate assembly, the gap between the outer side of the coil 3 and the inner side of the base 1 should be as large as possible. At the same time, the winding part 5 can provide stable support for the coil 3. Therefore, the width of the winding part 5 is preferably 1.0 mm.

[0038] A first notch 19 is provided on the first mounting portion 12, and a second notch 20 is provided on the second mounting portion 13. The first notch 19 and the second notch 20 are respectively connected to the two through cavities 21. The connection between the first bending portion 9 and the connecting portion 10 is located at the first notch 19, and the connection between the second bending portion 11 and the connecting portion 10 is located at the second notch 20.

[0039] The shape of the frame 2 is similar to that of the iron core 4 , and the iron core 4 can be accurately and stably installed inside the frame 2 , which can increase the assembly speed of the relay.

[0040] Along the third direction Z, the thickness of the first mounting portion 12 and the thickness of the second mounting portion 13 are both greater than the thickness of the coil 3 .

[0041] Specifically, the relay also includes an armature 6, a movable spring 7 and a static spring 8. The first end of the armature 6 is rotatably connected to the second end of the second bending portion 11, the second end of the armature 6 is in movable contact with the movable spring 7, and the static spring 8 and the movable spring 7 are arranged on the same side of the armature 6.

[0042] It should be noted that the armature 6 can be rotatably connected to the iron core 4 in a manner commonly used in the prior art, which will not be described in detail here.

[0043] A current is passed through the coil 3, generating a magnetic field. Under the action of the magnetic field, the armature 6 moves - the first end of the armature 6 rotates relative to the second bend 11, and the second end of the armature 6 approaches and contacts the first bend 9. The armature 6, the iron core 4, and the coil 3 form a strong closed magnetic circuit. At the same time, the movable spring 7 is deformed under the compulsion of the armature 6, and the contact 17 on the movable spring 7 approaches and contacts the contact 17 on the static spring 8. The circuit between the movable spring 7 and the static spring 8 is conductive, and the controlled system connected to the movable spring 7 and the static spring 8 is energized, causing the controlled system to operate.

[0044] The iron core 4 of the present invention also serves as a yoke. The iron core 4 has a first bent portion 9 and a second bent portion 11, which can cooperate with the armature 6 to form a closed magnetic circuit, thereby enhancing the magnetic force. The first bent portion 9, the connecting portion 10, and the second bent portion 11 form a "∩"-shaped structure, which can reduce space to a certain extent, reduce the volume of the relay, and facilitate the subsequent installation of the relay in the circuit.

[0045] In addition, in order to optimize the structure, the power relay also includes a pusher 14, which is movably connected to the second end of the armature 6, and the pusher 14 is in movably contact with the movable spring 7; specifically, the pusher 14 is slidably arranged on the base 1, and a portion of the pusher 14 passes through the base 1 and is in movably contact with the second end of the armature 6.

[0046] The armature 6 moves under the action of the magnetic field generated by the coil 3, which drives the pusher 14 to slide, and then forces the movable spring 7 to deform, so that the contact 17 on the movable spring 7 contacts the contact 17 on the static spring 8. The circuit between the movable spring 7 and the static spring 8 is connected, and the controlled system is energized and actuated.

[0047] In some embodiments, in order to facilitate assembly and replacement, the dynamic spring piece 7 and the static spring piece 8 are inserted into the base 1. Holes can be directly opened on the base 1, and the dynamic spring piece 7 and the static spring piece 8 are snapped into the holes, while the electrode terminals of the dynamic spring piece 7 and the static spring piece 8 are located outside the base 1.

[0048] It should also be noted here that the contacts 17 of the static reed 8 and the dynamic reed 7 are made of silver or a silver alloy, which has good electrical conductivity. When the contacts 17 on the dynamic reed 7 and the contacts 17 on the static reed 8 come into contact, the dynamic reed 7 and the static reed 8 can be smoothly connected, and the controlled system is energized.

[0049] It should also be noted that there are two installation areas on the base 1: the first installation area is used to install the skeleton 2, coil 3 and iron core 4, and the second installation area is used to install the dynamic spring 7, static spring 8 and pusher 14. There should be a gap between the outer side of the coil 3 and the inner side surface of the first installation area of ​​the base 1, and the pusher 14 is slidably set in the second installation area of ​​the base 1, and a guide column (not shown in the drawings) is also provided in the second installation area to guide the pusher 14.

[0050] The power relay further includes a cover 15 , which is connected to the base 1 and wraps the iron core 4 , the frame 2 , and the coil 3 therein, thereby protecting key components such as the iron core 4 and the coil 3 .

[0051] In addition, in order to rationally utilize the space inside the hood 15, a relief slope 16 is provided on the side of the second end of the armature 6 facing away from the frame 2. The relief slope 16 reduces the volume of the second end of the armature 6. In the limited space inside the hood 15, the armature 6 can rotate with a larger amplitude, ensuring that it can drive the pusher 14 to slide, and thereby successfully force the dynamic spring 7 to deform.

[0052] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A wire package, characterized in that: Including skeleton, iron core and coil; The skeleton has a winding portion, and the winding portion is hollow in the middle; The iron core is arranged on the frame, and a part of the iron core is located in the winding part; The coil is wound around the winding portion and the outer sides of the iron core.

2. The wire package according to claim 1, characterized in that The skeleton also has a first mounting portion and a second mounting portion, and the winding portion includes two connecting rods extending along the first direction, and the two connecting rods are arranged at intervals along the second direction, and the first direction is perpendicular to the second direction, wherein the first end of each connecting rod is connected to the first mounting portion, and the second end of each connecting rod is connected to the second mounting portion, and the two connecting rods, the first mounting portion and the second mounting portion form a hollow through-cavity, and a part of the iron core is embedded in the through-cavity.

3. The wire package according to claim 2, characterized in that The iron core includes a first bending portion, a connecting portion and a second bending portion, and the two ends of the connecting portion are respectively connected to the first end of the first bending portion and the first end of the second bending portion; the two opposite sides of the connecting portion along the first direction are respectively attached to the relative inner sides of the two connecting rods, and the coil is wound around the outside of the two connecting rods and the connecting portion.

4. The wire package according to claim 3, characterized in that In a third direction perpendicular to the first direction and the second direction, the thickness of the connecting rod is adapted to the thickness of the connecting portion.

5. The wire package according to claim 4, characterized in that The thickness of the connecting rod is equal to the thickness of the connecting portion.

6. The wire package according to claim 4 or 5, characterized in that: In the third direction, the thickness of the connecting rod is between 0.8 mm and 1.4 mm.

7. The wire package according to claim 3, characterized in that A first notch is provided on the first mounting portion, and a second notch is provided on the second mounting portion. The first notch and the second notch are respectively connected to the two through cavities. The connection between the first bending portion and the connecting portion is located at the first notch, and the connection between the second bending portion and the connecting portion is located at the second notch.

8. The wire package according to claim 4, characterized in that Along the third direction, thicknesses of the first mounting portion and the second mounting portion are both greater than thickness of the coil.

9. A relay, characterized in that: The wire package according to any one of claims 1 to 8 is used.

10. The relay according to claim 9, characterized in that The relay further includes a base, the coil is mounted on the base, and a gap is left between the outer side of the coil and the inner side of the base.

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