An AC / DC relay

Abstract

The utility model relates to the field of relays, and specifically, to an AC / DC relay. By energizing the coil to generate an electromagnet, the iron core adsorbs the armature, and then the first moving contact contacts the first static contact, and the second moving contact contacts the second static contact, so that the AC / DC relay works normally. By de-energizing the coil, the iron core loses its adsorption force on the armature, and under the action of the second spring tension, the armature is stretched, the first moving contact is disconnected from the first static contact, and the second moving contact is disconnected from the second static contact, and the AC / DC relay is disconnected. Thereby, the impact force when the first moving contact and the second moving contact are respectively in contact with the first static contact and the second static contact can be reduced, thereby reducing the friction force, and the service life of the AC / DC relay can be increased.

Description

Technical Field

[0001] The utility model relates to the field of relays, in particular to an AC / DC relay. Background Art

[0002] An AC / DC relay is a relay that can work in both AC and DC circuits. Its core component is an electromagnet, which generates a magnetic field through electric current to drive the contact to move, thereby controlling the on and off of the circuit. In the process of use, most of the existing AC / DC relays use an electromagnet to absorb the armature or to disengage from the armature. The armature rotates around one end, and the moving contact on the other end abuts against the normally open contact or the normally closed contact, thereby realizing the power on or off of the circuit. Although this type of relay can quickly energize or de-energize the circuit, due to the electromagnet adsorbing the armature to rotate or disengaging from the armature, the armature is similar to a lever, and there is a lever principle, so that the collision of the moving contact with the normally open contact or the normally closed contact will cause the armature to generate a large torque, and the collision of the moving contact with the normally open contact will also generate a large force, resulting in greater wear on each contact, which may affect the service life of the relay. Utility Model Content

[0003] In order to solve the problem that the existing AC / DC relay moving contact has large friction when in contact with the normally open contact or the normally closed contact, which may affect the service life of the AC / DC relay, the utility model provides an AC / DC relay, including:

[0004] A cover assembly, the cover assembly comprising a box body, a cover body, and a positioning bolt; the box body and the cover body are detachably fixedly connected; a section of the positioning bolt is fixedly connected to the inner surface of the bottom plate portion of the box body;

[0005] Two first limit assemblies, wherein the first limit assemblies are fixedly disposed in the box; the two first limit assemblies are movably connected to the first static contact and the second static contact respectively;

[0006] A second limit assembly, wherein the second limit assembly is fixedly connected to the cover body; the limit assembly is movably connected to the armature; a first moving contact and a second moving contact are respectively provided at two ends of the armature; the first static contact is located directly below the first moving contact; and the second static contact is located directly below the second moving contact;

[0007] An adsorption component, the adsorption component comprises a positioning plate, an iron core, and a coil; the positioning plate is detachably fixedly connected to the positioning bolt; one end of the iron core is fixedly connected to the positioning plate; the other end is located below the second limit assembly and abuts against the second limit assembly; the adsorption component is located between the two second limit assemblies;

[0008] The first terminal, the second terminal, the third terminal and the fourth terminal are arranged on the peripheral wall of the box body; the first terminal is electrically connected to the first static contact; the second terminal is electrically connected to the second static contact; the third terminal and the fourth terminal are electrically connected to the end terminals of the coil respectively.

[0009] The first limiting assembly includes a first limiting cylinder, a first spring, a lifting shaft, and a latch; one end of the first limiting cylinder is fixedly connected to a portion of the inner surface of the bottom plate of the box body; the two first limiting cylinders are arranged in a mirror image along the central cross-section of the box body; a first slide groove is arranged on the first limiting cylinder; the first slide groove penetrates a portion of the outer circumference of the first limiting cylinder along the radial direction of the first limiting cylinder; the lifting shaft is movably connected to the first limiting cylinder; a pin hole is arranged on the lifting shaft; the length of the latch is greater than the diameter of the first limiting cylinder; the width of the latch is less than the width of the first slide groove; the width of the latch is equal to the width of the pin hole; one end of the two lifting shafts away from the bottom plate of the box body is respectively fixedly connected to the first static contact and the second static contact; the first spring is arranged in the first limiting cylinder; the two ends of the first spring are respectively abutted against the lifting shaft and the box body pad.

[0010] In some embodiments, the second limiting assembly includes a second limiting cylinder, a positioning cylinder, a second spring, and a positioning block; a second slide groove is provided on the second limiting cylinder; the second slide groove extends from one end of the second limiting cylinder close to the bottom plate of the box body along the axial direction of the second limiting cylinder toward the other end of the second limiting cylinder; the positioning cylinder is arranged in the second limiting cylinder; one end of the positioning cylinder is fixedly connected to the cover body; the other end extends into the second limiting cylinder; the second spring is arranged in the second limiting cylinder; one end of the second spring is fixedly connected to the armature, and the other end is fixedly connected to the positioning block; the positioning block is fixedly connected to the positioning cylinder; the armature passes through the second slide groove.

[0011] In some embodiments, the iron core is arranged equidistant from the two first limiting cylinders.

[0012] In some embodiments, the cover body and the box body are detachably fixedly connected by bolts.

[0013] In some embodiments, a portion of the end surface of the armature close to the core protrudes toward the core along a height direction of the armature.

[0014] In some embodiments, an outer peripheral surface of a portion of an end of the iron core away from the bottom plate of the box body protrudes outward along the radial direction of the iron core.

[0015] In order to solve the problem that the existing AC / DC relay moving contact has large friction when in contact with the normally open contact or the normally closed contact, which may affect the service life of the AC / DC relay, the utility model has the following advantages:

[0016] By energizing the coil to generate an electromagnet, the iron core absorbs the armature, and then the first moving contact contacts the first static contact, and the second moving contact contacts the second static contact, so that the AC / DC relay can work normally. By de-energizing the coil, the iron core loses its attraction to the armature, and under the action of the second spring tension, the armature is stretched, the first moving contact is disconnected from the first static contact, and the second moving contact is disconnected from the second static contact, so that the AC / DC relay is disconnected. Since the iron core absorbs the center of the armature, the first moving contact and the second moving contact can contact the first static contact and the second static contact respectively at the same time, and the force generated during the contact can be evenly divided, and the contact area can be increased, so that the friction force when the first moving contact and the second moving contact are respectively in contact with the first static contact and the second static contact can be reduced, so that the service life of the AC / DC relay can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an AC / DC relay;

[0018] Figure 2 for Figure 1 Explosion diagram of

[0019] Figure 3 It is a plan view of an AC / DC relay;

[0020] Figure 4 for Figure 1 Sectional view along the AA direction;

[0021] Figure 5 for Figure 2 A local enlarged schematic diagram of the middle A;

[0022] Figure 6 for Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0023] Figure 7 for Figure 2 A partial enlarged schematic diagram of point C in the middle.

[0024] In the figure: 01, cover assembly; 11, box body; 12, cover body; 13, bolt; 02, first limit assembly; 21, first limit cylinder; 211 first slide groove; 22, first spring; 23, lifting shaft; 231, pin hole; 24, latch; 03, adsorption assembly; 31, positioning block; 32, iron core; 33, coil; 04, second limit assembly; 41, second limit cylinder; 411, second slide groove; 42, positioning cylinder; 43, second spring; 44, positioning block; 50, armature; 501, first moving contact; 502, second moving contact; 51, first static contact; 52, second static contact; 53, first terminal; 54, second terminal; 55, third terminal; 56, fourth terminal. DETAILED DESCRIPTION

[0025] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0026] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0027] This embodiment discloses an AC / DC relay, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, it may include:

[0028] The cover assembly 01 comprises a box body 11, a cover body, and a positioning bolt 13; the box body 11 is detachably fixedly connected to the cover body; a section of the positioning bolt 13 is fixedly connected to the inner surface of the bottom plate of the box body 11;

[0029] Two first limit assemblies 02, wherein the first limit assemblies 02 are fixedly disposed in the box body 11; the two first limit assemblies 02 are movably connected to the first static contact 51 and the second static contact respectively;

[0030] A second limit assembly 04, wherein the second limit assembly 04 is fixedly connected to the cover body; the limit assembly is movably connected to the armature 50; a first moving contact 501 and a second moving contact 502 are respectively provided at two ends of the armature 50; the first static contact 51 is located directly below the first moving contact 501; and the second static contact is located directly below the second moving contact 502;

[0031] Adsorption component 03, the adsorption component 03 includes a positioning plate 31, an iron core 32, and a coil 33; the positioning plate 31 is detachably fixedly connected to the positioning bolt 13; one end of the iron core 32 is fixedly connected to the positioning plate 31; the other end is located below the second limit component 04 and abuts against the second limit component 04; the adsorption component 03 is located between the two second limit components 04;

[0032] The first terminal, the second terminal, the third terminal and the fourth terminal are arranged on the peripheral wall of the box body 11; the first terminal is electrically connected to the first static contact 51; the second terminal is electrically connected to the second static contact; the third terminal and the fourth terminal are electrically connected to the end terminals of the coil 33 respectively.

[0033] In this embodiment, the coil 33 is energized to generate an electromagnet, so that the iron core 32 attracts the armature 50, and then the first moving contact 501 contacts the first static contact 51, and the second moving contact 502 contacts the second static contact, thereby realizing the normal operation of the AC / DC relay. By de-energizing the coil 33, the iron core 32 loses its attraction force on the armature 50, and under the pulling force of the second spring 43, the armature 50 is stretched, the first moving contact 501 is disconnected from the first static contact 51, and the second moving contact 502 is disconnected from the second static contact, and the AC / DC relay is disconnected. Since the iron core 32 adsorbs the center of the armature 50, the first moving contact 501 and the second moving contact 502 can contact the first static contact 51 and the second static contact respectively at the same time, the force generated during the touch can be evenly divided, and the touch area can be increased, thereby reducing the friction force when the first moving contact 501 and the second moving contact 502 contact the first static contact 51 and the second static contact respectively, thereby increasing the service life of the AC / DC relay.

[0034] In some embodiments, Figure 2 , Figure 4 , Figure 6 , Figure 7As shown, the first limiting assembly 02 includes a first limiting cylinder 21, a first spring 22, a lifting shaft 23, and a latch 24; one end of the first limiting cylinder 21 is fixedly connected to a portion of the inner surface of the bottom plate of the box body 11; the two first limiting cylinders 21 are mirror-imaged along the central cross-section of the box body 11; a first slide groove 211 is provided on the first limiting cylinder 21; the first slide groove 211 passes through a portion of the outer circumference of the first limiting cylinder 21 along the radial direction of the first limiting cylinder 21; the lifting shaft 23 is movably connected to the first limiting cylinder 21; the A pin hole 231 is provided on the lifting shaft 23; the length of the latch 24 is greater than the diameter of the first limiting cylinder 21; the width of the latch 24 is less than the width of the first slide groove 211; the width of the latch 24 is equal to the width of the pin hole 231; the ends of the two lifting shafts 23 away from the bottom plate of the box body 11 are fixedly connected to the first static contact 51 and the second static contact respectively; the first spring 22 is arranged in the first limiting cylinder 21; the two ends of the first spring 22 are respectively in contact with the lifting shaft 23 and the pad of the box body 11.

[0035] In this embodiment, by providing the first spring 22, when the first moving contact 501 touches the first static contact 51 and the second moving contact 502 touches the second static contact, the first spring 22 will be compressed, so that the first moving contact 501 has a certain buffer force when touching the first moving contact 501, and the second moving contact 502 has a certain buffer force when touching the second static contact, thereby reducing the impact force between the first moving contact 501 and the first static contact 51 and the second moving contact 502 and the second static contact while ensuring that the first moving contact 501 and the first static contact 51 and the second moving contact 502 and the second static contact are in good contact, thereby reducing the deformation of the first moving contact 501, the second moving contact 502, the first static contact 51 and the second static contact.

[0036] In some embodiments, Figure 2 , Figure 4 , Figure 5 As shown, the second limiting assembly 04 includes a second limiting cylinder 41, a positioning cylinder, a second spring 43, and a positioning block 44; a second slide groove 411 is provided on the second limiting cylinder 41; the second slide groove 411 extends from one end of the second limiting cylinder 41 close to the bottom plate of the box body 11 along the axial direction of the second limiting cylinder 41 toward the other end of the second limiting cylinder 41; the positioning cylinder is arranged in the second limiting cylinder 41; one end of the positioning cylinder is fixedly connected to the cover body; the other end extends into the second limiting cylinder 41; the second spring 43 is arranged in the second limiting cylinder 41; one end of the second spring 43 is fixedly connected to the armature 50, and the other end is fixedly connected to the positioning block 44; the positioning block 44 is fixedly connected to the positioning cylinder; the armature 50 passes through the second slide groove 411.

[0037] In this embodiment, by providing the second spring 43, the second spring 43 can apply a certain pulling force to the armature 50. When the iron core 32 adsorbs the armature 50, the second spring 43 is stretched, the first moving contact 501 contacts the second static contact, and the second moving contact 502 contacts the second static contact. When the iron core 32 loses its magnetism, the second spring 43 contracts, causing the armature 50 to break away from contact with the iron core 32, thereby causing the AC / DC relay to be in an open circuit state.

[0038] In some embodiments, the iron core 32 is disposed equidistantly from the two first limiting cylinders 21 .

[0039] In this embodiment, by equidistantly arranging the iron core 32 and the two first limiting cylinders 21, the iron core 32 can adsorb the central part of the armature 50 when it generates magnetism, so that the armature 50 is subjected to more uniform force when the first moving contact 501 collides with the first static contact 51 and when the second moving contact 502 collides with the second static contact.

[0040] In some embodiments, the cover body is detachably fixedly connected to the box body 11 via bolts 13 .

[0041] In some embodiments, a portion of the end surface of the armature 50 close to the core 32 protrudes toward the core 32 along the height direction of the armature 50 .

[0042] In this embodiment, by increasing the thickness of the armature 50 , the armature 50 and the core 32 can have a stronger magnetic attraction force when the core 32 adsorbs the armature 50 , thereby preventing the armature 50 and the core 32 from losing contact during use of the AC / DC relay.

[0043] In some embodiments, the outer peripheral surface of one end portion of the iron core 32 away from the bottom plate of the box body 11 protrudes outward along the radial direction of the iron core 32 .

[0044] In this embodiment, by increasing the cross section of the end of the iron core 32 , the contact area between the armature 50 and the iron core 32 during adsorption can be increased, thereby making the adsorption of the armature 50 more stable.

[0045] In the above, those skilled in the art can know that the box body 11 and the cover body 12 in the cover assembly 01 are both made of insulating materials.

[0046] The working principle of the utility model is:

[0047] When it is necessary to change the operation of the AC / DC relay, the third terminal and the fourth terminal are energized, so that the coil 33 is energized to form an electromagnet, the iron core 32 attracts the armature 50, the second spring 43 is stretched, the first moving contact 501 contacts the first static contact 51, and the second moving contact 502 contacts the second static contact; a path is formed between the first terminal and the second terminal to conduct current; when it is not necessary to change the operation of the AC / DC relay, the power supply line between the third terminal and the fourth terminal is disconnected; the iron core 32 stops attracting the armature 50, and under the pulling force of the second spring 43, the armature 50 is reset, the first moving contact 501 is disconnected from the first static contact 51, and the second moving contact 502 is disconnected from the second static contact.

[0048] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present disclosure.

Claims

1. An AC / DC relay, characterized in that: include: A cover assembly, the cover assembly comprising a box body, a cover body, and a positioning bolt; the box body and the cover body are detachably fixedly connected; a section of the positioning bolt is fixedly connected to the inner surface of the bottom plate portion of the box body; Two first limit assemblies, wherein the first limit assemblies are fixedly disposed in the box; the two first limit assemblies are movably connected to the first static contact and the second static contact respectively; A second limit assembly, wherein the second limit assembly is fixedly connected to the cover body; the limit assembly is movably connected to the armature; a first moving contact and a second moving contact are respectively provided at two ends of the armature; the first static contact is located directly below the first moving contact; and the second static contact is located directly below the second moving contact; An adsorption component, the adsorption component comprises a positioning plate, an iron core, and a coil; the positioning plate is detachably fixedly connected to the positioning bolt; one end of the iron core is fixedly connected to the positioning plate; the other end is located below the second limit assembly and abuts against the second limit assembly; the adsorption component is located between the two second limit assemblies; The first terminal, the second terminal, the third terminal and the fourth terminal are arranged on the peripheral wall of the box body; the first terminal is electrically connected to the first static contact; the second terminal is electrically connected to the second static contact; the third terminal and the fourth terminal are electrically connected to the end terminals of the coil respectively.

2. An AC / DC relay according to claim 1, characterized in that: The first limiting assembly includes a first limiting cylinder, a first spring, a lifting shaft, and a latch; one end of the first limiting cylinder is fixedly connected to a portion of the inner surface of the bottom plate of the box body; the two first limiting cylinders are arranged in a mirror image along the central cross-section of the box body; a first slide groove is arranged on the first limiting cylinder; the first slide groove penetrates a portion of the outer circumference of the first limiting cylinder along the radial direction of the first limiting cylinder; the lifting shaft is movably connected to the first limiting cylinder; a pin hole is arranged on the lifting shaft; the length of the latch is greater than the diameter of the first limiting cylinder; the width of the latch is less than the width of the first slide groove; the width of the latch is equal to the width of the pin hole; one end of the two lifting shafts away from the bottom plate of the box body is respectively fixedly connected to the first static contact and the second static contact; the first spring is arranged in the first limiting cylinder; the two ends of the first spring are respectively abutted against the lifting shaft and the box body pad.

3. An AC / DC relay according to claim 2, characterized in that: The second limiting assembly includes a second limiting cylinder, a positioning cylinder, a second spring, and a positioning block; a second slide groove is provided on the second limiting cylinder; the second slide groove extends from one end of the second limiting cylinder close to the bottom plate of the box body along the axial direction of the second limiting cylinder toward the other end of the second limiting cylinder; the positioning cylinder is arranged in the second limiting cylinder; one end of the positioning cylinder is fixedly connected to the cover body; the other end extends into the second limiting cylinder; the second spring is arranged in the second limiting cylinder; one end of the second spring is fixedly connected to the armature, and the other end is fixedly connected to the positioning block; the positioning block is fixedly connected to the positioning cylinder; the armature passes through the second slide groove.

4. An AC / DC relay according to claim 2, characterized in that: The iron core is arranged equidistant from the two first limiting cylinders respectively.

5. The AC / DC relay according to claim 1, characterized in that: The cover body is detachably fixedly connected to the box body by bolts.

6. The AC / DC relay according to claim 1, characterized in that: A portion of the end surface of the armature close to the iron core protrudes toward the iron core along a height direction of the armature.

7. The AC / DC relay according to claim 1, characterized in that: The outer peripheral surface of one end portion of the iron core away from the bottom plate of the box body protrudes outward along the radial direction of the iron core.

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