Electromagnetic relay

Abstract

The utility model discloses an electromagnetic relay, which relates to the technical field of relays and comprises a first contact plate, a first static contact, a second contact plate, a second static contact, a push block and an electromagnetic driving assembly. The first touch panel is provided with a first movable contact; the first static contact and the first movable contact are arranged at an interval; the second contact plate is provided with a second movable contact; the second static contact and the second movable contact are arranged at an interval; the push block is arranged between the first touch plate and the second touch plate; the electromagnetic driving assembly drives the actuating structure to move in the closing direction through the electro-magnetic effect so as to drive the first touch plate to move in the first direction through the actuating structure, the first touch plate can abut against the push block, and the first movable contact can make contact with the first static contact. And the push block is driven by the first touch plate to drive the second touch plate to move along the second direction, so that the second movable contact is in contact with the second static contact. According to the technical scheme provided by the utility model, the contact resistance value between the movable contact and the static contact can be reduced, and the temperature rise of the terminal and the heating value of a relay product can be reduced.

Description

Technical Field

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

[0002] The working principle of the bridge contact electromagnetic relay is to use the magnetic field generated by the current to drive two moving contacts connected in series to contact two static contacts respectively, so as to act as a bridge through the two moving contacts, so that the two static contacts are electrically conductive, thereby realizing the conduction of the entire branch.

[0003] Since each contact pair of the bridge contact electromagnetic relay has two contact parts (i.e., two moving contacts and two stationary contacts), the driving force of the magnetic field will be dispersed to the two contact parts, so that the pre-pressure borne by the contacts in a single contact part is relatively small. This may cause the moving contact and the stationary contact to be unable to fit tightly under a small pre-pressure, resulting in a higher contact resistance value between the moving contact and the stationary contact, causing the temperature rise of the terminal to increase and the heat generation of the product to increase, which may have an adverse effect on the normal operation of the relay. Utility Model Content

[0004] The main purpose of the utility model is to provide an electromagnetic relay, aiming to reduce the contact resistance between a moving contact and a stationary contact, and reduce the temperature rise of the terminal and the heat generated by the relay product.

[0005] To achieve the above-mentioned purpose, the electromagnetic relay proposed by the utility model comprises:

[0006] A first touch plate having a first moving contact point;

[0007] A first static contact, spaced apart from the first moving contact;

[0008] A second touch plate is provided with a second moving contact point;

[0009] a second static contact, spaced apart from the second moving contact;

[0010] A push block, disposed between the first touch plate and the second touch plate;

[0011] An electromagnetic drive component has an actuating structure; the electromagnetic drive component is used to drive the actuating structure to move in a closing direction through an electromagnetism effect, so as to drive the first touch plate to move in a first direction through the actuating structure, so that the first touch plate abuts against the push block and the first moving contact contacts the first static contact; the push block is used to drive the second touch plate to move in a second direction under the drive of the first touch plate, so that the second moving contact contacts the second static contact.

[0012] In one embodiment, the electromagnetic relay further comprises a base;

[0013] The first touch plate is made of elastic material and has a first end and a second end arranged opposite to each other, the first end is connected to the base, the second end is provided with the first moving contact, and the second end abuts against the actuating structure under elastic preload; the actuating structure is used to push the second end to swing along the first direction with the first end as the center, so that the first moving contact contacts the first static contact.

[0014] In one embodiment, the second touch plate is made of an elastic material and has a third end and a fourth end that are relatively arranged, the third end is connected to the base, the fourth end is provided with the second moving contact, and the fourth end abuts against the push block under an elastic preload; the push block is used to push the fourth end to swing along the second direction with the third end as the center, so that the second moving contact contacts the second static contact.

[0015] In one embodiment, the base is provided with a first clamping structure, and the first end is clamped in the first clamping structure; the first moving contact is located on one side surface of the first touch plate, and the other side surface of the first touch plate abuts against the actuating structure.

[0016] In one embodiment, the base is provided with a second clamping structure, and the third end is clamped in the second clamping structure; the second moving contact is located on one side surface of the second touch plate, and the other side surface of the second touch plate abuts against the push block.

[0017] In one embodiment, the first touch plate includes a first plate body and a first spring sheet; the first plate body is clamped in the first gap structure, and the first plate body is used to connect the first signal end; one end of the first spring sheet is connected between the first plate body and the side wall of the first gap structure, and the first moving contact is arranged at the other end of the first spring sheet, and the first spring sheet abuts against the actuating structure under elastic preload.

[0018] In one embodiment, the second touch plate includes a second plate body and a second spring sheet; the second plate body is clamped in the second gap structure, and the second plate body is used to connect the second signal end; one end of the second spring sheet is connected between the second plate body and the side wall of the second gap structure, and the second moving contact is arranged at the other end of the second spring sheet, and the second spring sheet abuts against the push block under elastic preload.

[0019] In one embodiment, a first bump structure is disposed at the first end portion, and the first bump structure is in point contact with a side wall of the first gap structure.

[0020] In one embodiment, the third end is provided with a second bump structure, and the second bump structure is in point contact with the side wall of the second gap structure.

[0021] In one embodiment, a first arc boss is provided on a side of the push block facing the first touch plate; when the first touch plate moves along the first direction, the first arc boss is used to abut against the first touch plate.

[0022] In one embodiment, a second arc boss is provided on a side of the push block facing the second touch plate; when the push block moves in a direction close to the second touch plate driven by the first touch plate, the second arc boss is used to abut against the second touch plate.

[0023] In one embodiment, the electromagnetic relay further includes a base, the base is provided with a partition structure, the first touch plate and the second touch plate are respectively arranged on both sides of the partition structure, the partition structure is provided with an avoidance channel, and the push block moves between the first touch plate and the second touch plate along the avoidance channel.

[0024] In one embodiment, the electromagnetic relay further comprises a base, the base is provided with a guide groove, the guide groove extends from the first contact plate to the second contact plate, and the bottom of the push block is slidably fitted in the guide groove.

[0025] In one embodiment, the electromagnetic relay also includes a shell, and the first touch plate, the first static contact, the second touch plate, the second static contact, the push block, and the electromagnetic drive assembly are arranged in an inner cavity of the shell; the shell is provided with a convex rib structure, and the convex rib structure is located above the top of the push block and is used to prevent the push block from moving upward.

[0026] In one embodiment, the electromagnetic drive assembly includes an armature, a yoke and a coil assembly; one end of the armature is arranged above the coil assembly, the middle part of the armature is rotatably connected to the yoke, and the other end of the armature extends downward to the first touch plate to form the actuating structure; the coil assembly is used to attract one end of the armature close to the coil assembly through an electromagnetism effect, so that the actuating structure swings in a direction close to the first touch plate and pushes the first touch plate to move in the first direction.

[0027] In one implementation, the push block is made of insulating material.

[0028] In one embodiment, the electromagnetic drive assembly further includes an auxiliary elastic member connected to the yoke; the auxiliary elastic member is used to abut against the armature so as to cause one end of the armature to move away from the coil assembly through elastic force.

[0029] In one embodiment, the electromagnetic drive assembly further includes a bushing, which is made of insulating material and sleeved on the other end of the armature. The bushing is provided with a third circular arc boss, and the third circular arc boss is used to abut against the first touch plate.

[0030] In one embodiment, the electromagnetic relay also includes a base, the first touch plate is used to connect to a first signal terminal, the first static contact is used to connect to a third signal terminal, the second touch plate is used to connect to a second signal terminal, the second static contact is used to connect to a fourth signal terminal, and the first signal terminal, the second signal terminal, the third signal terminal, and the fourth signal terminal respectively constitute four corner parts of a rectangle on the base.

[0031] The technical solution of the utility model improves each contact pair of the traditional relay to have only one contact part, that is, there is only contact between the first moving contact and the first static contact in the first contact pair, and there is only contact between the second moving contact and the second static contact in the second contact pair. In this way, the traditional on-off form of bridging the moving contact and the static contact is changed, and instead a method of directly driving the moving contact and the static contact to contact is adopted. This method can avoid the driving force of the magnetic field from being dispersed to multiple contact parts in each contact pair, and ensure that the driving force of the magnetic field can fully act on one contact part in each contact pair, so as to ensure that the first moving contact and the first static contact in one contact pair can fit tightly under a large pre-pressure, and at the same time ensure that the second moving contact and the second static contact in another contact pair can fit tightly under a large pre-pressure, thereby reducing the contact resistance value between the first moving contact and the first static contact and the contact resistance value between the second moving contact and the second static contact, reducing the temperature rise of the terminal and the heat generation of the relay product, so that the relay can work stably. In addition, the technical solution adopts the form of transmission between the first contact plate and the second contact plate through a push block. There is no need to arrange multiple contact pairs side by side in a direction perpendicular to the action path like a traditional bridge contact relay, thereby removing the limitations of the overall structure of the electromagnetic relay to a certain extent and improving the design flexibility and applicability of the electromagnetic relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 A three-dimensional structural diagram of an embodiment of an electromagnetic relay provided by the utility model;

[0034] Figure 2 A schematic diagram of a top view of an electromagnetic relay according to an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the exploded structure of an embodiment of the electromagnetic relay provided by the utility model.

[0036] Description of Figure Numbers:

[0037] 1. first touch plate; 101. first plate body; 102. first spring sheet; 1011. first convex point structure; 1021. first moving contact point;

[0038] 2. The first static contact;

[0039] 3. second touch plate; 301. second plate body; 302. second spring sheet; 3011. second convex point structure; 3021. second moving contact point;

[0040] 4. Second static contact;

[0041] 5. Push block; 501. First arc boss; 502. Second arc boss;

[0042] 6. Electromagnetic drive assembly; 601. Armature; 602. Yoke; 603. Coil assembly; 604. Auxiliary elastic member; 605. Bushing; 6011. Actuating structure; 6051. Third arc boss;

[0043] 7. Base; 701. First clamping structure; 702. Second clamping structure; 703. Partition structure; 704. Guide groove; 7031. Avoidance passage.

[0044] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0048] The working principle of the bridge contact electromagnetic relay is to use the magnetic field generated by the current to drive two moving contacts connected in series to contact two static contacts respectively, so as to act as a bridge through the two moving contacts, so that the two static contacts are electrically conductive, thereby realizing the conduction of the entire branch.

[0049] As described in the background technology, since each contact pair of the bridge contact electromagnetic relay has two contact parts (i.e., two moving contacts and two static contacts), the driving force of the magnetic field will be dispersed to the two contact parts, so that the pre-pressure borne by the contacts in a single contact part is smaller. This may cause the moving contact and the static contact to be unable to fit tightly under a smaller pre-pressure, thereby causing the contact resistance between the moving contact and the static contact to be higher, causing the temperature rise of the terminal to increase and the heat generation of the product to increase, which may have an adverse effect on the normal operation of the relay.

[0050] In order to solve the above problems, the utility model proposes an electromagnetic relay, in which each contact pair of a traditional relay is improved to have only one contact part, so as to avoid the dispersion of the driving force of the magnetic field, thereby ensuring that the moving contact and the static contact in the contact part can fit tightly under a large pre-pressure, thereby reducing the contact resistance value between the moving contact and the static contact, reducing the temperature rise of the terminal and the heat generated by the relay product.

[0051] See also Figures 1 to 3In one embodiment of the utility model, the electromagnetic relay includes a first contact plate 1, a first static contact 2, a second contact plate 3, a second static contact 4, a push block 5 and an electromagnetic drive assembly 6; the first contact plate 1 is provided with a first moving contact 1021; the first static contact 2 and the first moving contact 1021 are arranged at intervals; the second contact plate 3 is provided with a second moving contact 3021; ​​the second static contact 4 and the second moving contact 3021 are arranged at intervals; the push block 5 is arranged between the first contact plate 1 and the second contact plate 3; the electromagnetic drive assembly 6 has an actuating structure 6011; the electromagnetic drive assembly 6 is used to drive the actuating structure 6011 to move in a closing direction through an electromagnetism effect, so as to drive the first contact plate 1 to move in a first direction through the actuating structure 6011, so that the first contact plate 1 abuts against the push block 5 and the first moving contact 1021 contacts the first static contact 2; the push block 5 is used to drive the second contact plate 3 to move in a second direction under the drive of the first contact plate 1, so that the second moving contact 3021 contacts the second static contact 4.

[0052] In this embodiment, the first touch panel 1 can be used to connect a group of electrical signal input terminals or electrical signal output terminals, and correspondingly, the first static contact 2 can be used to connect the group of electrical signal output terminals or electrical signal input terminals, and the first moving contact 1021 and the first static contact 2 constitute a contact pair; when the first moving contact 1021 is in contact with the first static contact 2, the group of electrical signal input terminals and electrical signal output terminals are electrically connected, thereby enabling the conduction of the corresponding branch; and when the first moving contact 1021 is separated from the first static contact 2, the group of electrical signal input terminals and electrical signal output terminals are no longer electrically connected, and the corresponding branch can be disconnected at this time. Similarly, the second touch panel 3 can be used to connect another group of electrical signal input terminals or electrical signal output terminals, and correspondingly, the second static contact 4 can be used to connect the group of electrical signal output terminals or electrical signal input terminals, and the second moving contact 3021 and the second static contact 4 constitute another contact pair; when the second moving contact 3021 is in contact with the second static contact 4, the group of electrical signal input terminals and electrical signal output terminals are electrically connected, thereby enabling the conduction of the corresponding branch; and when the second moving contact 3021 is separated from the second static contact 4, the group of electrical signal input terminals and electrical signal output terminals are no longer electrically connected, and the corresponding branch can be disconnected at this time.

[0053] The first touch panel 1, the second touch panel 3, and the push block 5 can all utilize the corresponding limiting structure inside the relay to realize their movement along the preset path, so that the first touch panel 1 can be driven by the actuating structure 6011 to translate or rotate along the first direction, thereby driving the push block 5 to translate or rotate along the preset path, and then the push block 5 can drive the second touch panel 3 to translate or rotate along the second direction; and in the process of the first touch panel 1 and the second touch panel 3 translating or rotating along the above direction, the first moving contact 1021 will contact the fixed first static contact 2, and the second moving contact 3021 will contact the fixed second static contact 4, so that the electrical conduction between the two sets of electrical signal input terminals and electrical signal output terminals is realized. Among them, in addition to playing the role of transmission between the first touch panel 1 and the second touch panel 3, so that the movement of the first touch panel 1 can more accurately drive the second touch panel 3 to move along the preset path, the push block 5 can also be made of insulating materials such as plastic to isolate the first touch panel 1 and the second touch panel 3, and avoid the first touch panel 1 and the second touch panel 3 directly contacting each other to cause a short circuit fault.

[0054] The specific structure of the electromagnetic drive component 6 and the principle and method of driving the actuating structure 6011 to move based on the electromagnetism effect can refer to the existing electromagnetic relay, and will not be described here. Among them, the actuating structure 6011 can refer to any structural member in the electromagnetic drive component 6, and can also refer to any part on the corresponding structural member, which is not limited here; the actuating structure 6011 can also use the corresponding limit structure inside the relay to realize its movement along the preset path under the drive of the magnetic field, so as to drive the first touch plate 1 to smoothly translate or rotate along the first direction.

[0055] It can be seen that the electromagnetic relay provided in this embodiment improves each contact pair of the traditional relay to have only one contact part, that is, there is only contact between the first moving contact 1021 and the first static contact 2 in the first contact pair, and there is only contact between the second moving contact 3021 and the second static contact 4 in the second contact pair. In this way, the traditional on-off form of bridging the moving contact and the static contact is changed, and instead a method of directly driving the moving contact and the static contact is adopted. This method can avoid the driving force of the magnetic field being dispersed to multiple contact parts in each contact pair, thereby ensuring the driving force of the magnetic field. It can act on one contact part in each contact pair, so as to ensure that the first moving contact 1021 and the first static contact 2 in one contact pair can fit tightly under a large pre-pressure, and at the same time ensure that the second moving contact 3021 and the second static contact 4 in another contact pair can fit tightly under a large pre-pressure, thereby reducing the contact resistance between the first moving contact 1021 and the first static contact 2 and the contact resistance between the second moving contact 3021 and the second static contact 4, reducing the temperature rise of the terminal and the heat generation of the relay product, so that the relay can work stably. In addition, this embodiment adopts the form of transmission between the first contact plate 1 and the second contact plate 3 through the push block 5, and there is no need to arrange multiple contact pairs side by side in a direction perpendicular to the action path like a traditional bridge contact relay, thereby removing the overall structural restrictions of the electromagnetic relay to a certain extent, and improving the design flexibility and applicability of the electromagnetic relay.

[0056] Optionally, refer to Figures 1 to 3 The electromagnetic relay also includes a base 7 .

[0057] The first touch panel 1 is made of elastic material and has a first end and a second end arranged opposite to each other, the first end is connected to the base 7, the second end is provided with a first moving contact 1021, and the second end abuts against the actuating structure 6011 under elastic preload; the actuating structure 6011 is used to push the second end to swing along the first direction with the first end as the center, so that the first moving contact 1021 contacts the first static contact 2.

[0058] Optionally, refer to Figures 1 to 3 The second touch plate 3 is made of elastic material and has a third end and a fourth end arranged opposite to each other. The third end is connected to the base 7, and the fourth end is provided with a second moving contact 3021. The fourth end abuts against the push block 5 under elastic preload; the push block 5 is used to push the fourth end to swing along the second direction with the third end as the center, so that the second moving contact 3021 contacts the second static contact 4.

[0059] Specifically, the base 7 can provide an installation foundation for the first touch plate 1, the first static contact 2, the second touch plate 3, the second static contact 4, the push block 5, the electromagnetic drive assembly 6 and other components in the relay. The first end of the first touch plate 1 can be connected to the protruding rib of the base 7 by clamping, snapping, locking, riveting, etc., and the second end of the first touch plate 1 can be kept in contact with the actuating structure 6011 under the elastic force; when the electromagnetic drive assembly 6 is powered on, the actuating structure 6011 can stably push the second end to swing along the first direction close to the push block 5 under the force of the magnetic field, so that the first moving contact 1021 contacts the first static contact 2; after the electromagnetic drive assembly 6 is powered off and the actuating structure 6011 is reset, the second end can also be reset synchronously with the actuating structure 6011. Similarly, the third end of the second touch panel 3 can be connected to the raised rib of the base 7 by clamping, snapping, locking, riveting, etc., and the fourth end of the second touch panel 3 can maintain abutment with the push block 5 under the elastic force; when the electromagnetic drive component 6 is energized, the push block 5 can stably push the fourth end to swing along the second direction under the drive of the first touch panel 1, so that the second moving contact 3021 contacts the second static contact 4; after the electromagnetic drive component 6 is powered off and the actuating structure 6011 and the first touch panel 1 are reset, the fourth end can push the push block 5 back under the elastic force until the push block 5 abuts against the first touch panel 1 to complete the reset action.

[0060] Based on the above arrangement, the elastic force of the first touch panel 1 and the second touch panel 3 can be utilized to ensure that the actuating structure 6011, the first touch panel 1, the push block 5, and the second touch panel 3 can always maintain an abutment state, thereby improving the continuity and accuracy of the driving action during contact contact and contact disconnection, and realizing automatic resetting of the first touch panel 1, the second touch panel 3, and the push block 5, so that the first moving contact 1021 and the first static contact 2, and the second moving contact 3021 and the second static contact 4 can be automatically separated after the electromagnetic drive component 6 stops driving, thereby realizing automatic disconnection of the corresponding branches, thereby improving convenience of use.

[0061] Optionally, refer to Figures 1 to 3 The base 7 is provided with a first clamping structure 701 , and the first end is clamped in the first clamping structure 701 ; the first moving contact 1021 is located on one side surface of the first touch panel 1 , and the other side surface of the first touch panel 1 abuts against the actuating structure 6011 .

[0062] Optionally, refer to Figures 1 to 3 The base 7 is provided with a second clamping structure 702 , and the third end is clamped in the second clamping structure 702 ; the second moving contact 3021 is located on one side surface of the second touch plate 3 , and the other side surface of the second touch plate 3 abuts against the push block 5 .

[0063] Specifically, the first gap structure 701 may refer to two raised ribs on the base 7 and the gap area therebetween. By clamping the first end of the first touch panel 1 with the first gap structure 701, it is easier to install and remove the first touch panel 1. It is also possible to reserve a certain margin of activity for the first end while ensuring that the second end of the first touch panel 1 can swing stably, so as to avoid the first end being completely fixed and affecting the swing of the second end, thereby improving the smoothness of the mutual cooperation between the actuating structure 6011, the first touch panel 1, and the push block 5 to a certain extent. Similarly, the second gap structure 702 may refer to the other two raised ribs on the base 7 and the gap area therebetween. By clamping the third end of the second touch panel 3 with the second gap structure 702, it is easier to install and remove the second touch panel 3. It is also possible to reserve a certain margin of activity for the third end while ensuring that the fourth end of the second touch panel 3 can swing stably, so as to avoid the third end being completely fixed and affecting the swing of the fourth end, thereby improving the smoothness of the mutual cooperation between the push block 5 and the second touch panel 3 to a certain extent.

[0064] Optionally, refer to Figures 1 to 3 The first touch panel 1 includes a first plate body 101 and a first spring 102; the first plate body 101 is clamped in the first gap structure 701, and the first plate body 101 is used to connect the first signal end; one end of the first spring 102 is connected between the first plate body 101 and the side wall of the first gap structure 701, and the first moving contact 1021 is arranged at the other end of the first spring 102, and the first spring 102 abuts against the actuating structure 6011 under elastic preload.

[0065] Optionally, refer to Figures 1 to 3 The second touch plate 3 includes a second plate body 301 and a second spring 302; the second plate body 301 is clamped in the second gap structure 702, and the second plate body 301 is used to connect the second signal end; one end of the second spring 302 is connected between the second plate body 301 and the side wall of the second gap structure 702, and the second moving contact 3021 is arranged at the other end of the second spring 302, and the second spring 302 abuts against the push block 5 under elastic preload.

[0066] In the present embodiment, the first touch panel 1 is divided into a first plate body 101 and a first spring 102. The first plate body 101 can be set as a relatively thick rigid member and used to be connected to the first signal terminal, while the first spring 102 is set as a relatively thin elastic member and used to swing along the first direction under the drive of the actuating structure 6011. At this time, the first plate body 101 and one end of the first spring 102 constitute the first end of the first touch panel 1. The first plate body 101 and one end of the first spring 102 are clamped together in the first gap structure 701, and the other end of the first spring 102 constitutes the second end of the first touch panel 1. Based on the above arrangement, the fixed part and the movable part of the first touch panel 1 can be separately arranged, so as to avoid the problem that the first plate body 101 is deviated due to the swinging action of the first spring 102, thereby causing adverse effects on the normal electrical connection at the first signal terminal. The first signal terminal may be an electrical signal input terminal or an electrical signal output terminal, and correspondingly, the signal terminal connected to the first static contact 2 may be an electrical signal output terminal or an electrical signal input terminal.

[0067] Similarly, in this embodiment, the second touch panel 3 is divided into a second plate body 301 and a second spring 302. The second plate body 301 can be set as a relatively thick rigid member and used to connect to the second signal end, and the second spring 302 can be set as a relatively thin elastic member and used to swing along the second direction under the drive of the push block 5; at this time, one end of the second plate body 301 and the second spring 302 constitute the third end of the second touch panel 3, and one end of the second plate body 301 and the second spring 302 are clamped together in the second clamping structure 702, and the other end of the second spring 302 constitutes the fourth end of the second touch panel 3. Based on the above arrangement, the fixed part and the movable part of the second touch panel 3 can be set separately, which can avoid the problem that the second plate body 301 is deviated due to the swinging action of the second spring 302, thereby causing adverse effects on the normal electrical connection at the second signal end. Among them, the second signal end can be an electrical signal input end or an electrical signal output end, and correspondingly, the signal end connected to the second static contact 4 can be an electrical signal output end or an electrical signal input end.

[0068] Optionally, refer to Figures 1 to 3 A first bump structure 1011 is provided at the first end, and the first bump structure 1011 is in point contact with the side wall of the first gap structure 701 .

[0069] Optionally, refer to Figures 1 to 3 A second bump structure 3011 is disposed at the third end, and the second bump structure 3011 is in point contact with the side wall of the second gap structure 702 .

[0070] Specifically, the first bump structure 1011 may be Figure 3The hemispherical or spherical crown shape shown in the figure; by setting the first convex point structure 1011, the surface contact form between the first end of the first touch panel 1 and the side wall of the first gap structure 701 (that is, the side wall of the two convex ribs forming the first gap structure 701) can be changed into a point contact form, thereby increasing the freedom of movement of the first end in the first gap structure 701, and avoiding the swinging movement of the second end of the first touch panel 1 along the first direction being excessively restricted by the first end, thereby improving the smoothness of the mutual cooperation between the actuating structure 6011, the first touch panel 1, and the push block 5 to a certain extent.

[0071] Similarly, the second bump structure 3011 may be Figure 3 The hemispherical or spherical crown shape shown in the figure; by setting the second convex point structure 3011, the surface contact form between the third end of the second touch plate 3 and the side wall of the second clip structure 702 (that is, the side wall of the two raised ribs of the second clip structure 702) can be changed into a point contact form, thereby increasing the freedom of movement of the third end in the second clip structure 702, and avoiding the swinging movement of the fourth end of the second touch plate 3 along the second direction being excessively restricted by the third end, thereby improving the smoothness of the mutual cooperation between the second touch plate 3 and the push block 5 to a certain extent.

[0072] Optionally, refer to Figures 1 to 3 A first arc boss 501 is provided on a side of the push block 5 facing the first touch plate 1 ; when the first touch plate 1 moves along the first direction, the first arc boss 501 is used to abut against the first touch plate 1 .

[0073] Optionally, refer to Figures 1 to 3 A second arc boss 502 is provided on the side of the push block 5 facing the second touch plate 3 ; when the push block 5 moves in a direction close to the second touch plate 3 driven by the first touch plate 1 , the second arc boss 502 is used to abut against the second touch plate 3 .

[0074] Specifically, the first arc boss 501 can be configured as follows: Figure 3 The cylindrical structure shown in the figure has a central axis which can be horizontally arranged and perpendicular to the moving path of the push block 5, and the cylindrical surface of the cylindrical structure is used to abut against the first touch plate 1; in this way, the first arc boss 501 can change the surface contact between the first touch plate 1 and the push block 5 into a line contact, so that when the two opposite side surfaces between the first touch plate 1 and the push block 5 are not completely parallel, the abutment between the first arc boss 501 and the first touch plate 1 can still be used to stably convert the swing of the first touch plate 1 into the translation of the push block 5, thereby improving the adaptability between the first touch plate 1 and the push block 5.

[0075] Similarly, the second arc boss 502 can be configured as follows: Figure 3The cylindrical structure shown in the figure has a central axis which can be horizontally arranged and perpendicular to the moving path of the push block 5, and the cylindrical surface of the cylindrical structure is used to abut against the second touch plate 3; in this way, the second arc boss 502 can change the surface contact between the second touch plate 3 and the push block 5 into a line contact, so that when the two opposite side surfaces between the second touch plate 3 and the push block 5 are not completely parallel, the abutment between the second arc boss 502 and the second touch plate 3 can still be used to stably convert the translation of the push block 5 into the swing of the second touch plate 3, thereby improving the adaptability between the second touch plate 3 and the push block 5.

[0076] Optionally, refer to Figures 1 to 3 The electromagnetic relay also includes a base 7, which is provided with a partition structure 703. The first touch plate 1 and the second touch plate 3 are respectively arranged on both sides of the partition structure 703. The partition structure 703 is provided with an avoidance channel 7031. The push block 5 moves between the first touch plate 1 and the second touch plate 3 along the avoidance channel 7031.

[0077] Specifically, the partition structure 703 can be a raised rib on the base 7 or a structural member external to the base 7. The partition structure 703 can be made of insulating material to form a barrier between the first touch panel 1 and the second touch panel 3 to avoid interference between the movements of the first touch panel 1 and the second touch panel 3. It can also avoid accidental touch between the first touch panel 1, the first static contact 2 and the second touch panel 3, the second static contact 4 to cause a short circuit fault, and can play a good protective role.

[0078] Optionally, refer to Figures 1 to 3 The electromagnetic relay further comprises a base 7 , which is provided with a guide groove 704 , which extends from the first contact plate 1 to the second contact plate 3 , and the bottom of the push block 5 is slidably fitted in the guide groove 704 .

[0079] Optionally, refer to Figures 1 to 3 The electromagnetic relay also includes a shell (not shown in the figure), a first touch plate 1, a first static contact 2, a second touch plate 3, a second static contact 4, a push block 5, and an electromagnetic drive assembly 6 are arranged in the inner cavity of the shell; the shell is provided with a convex rib structure (not shown in the figure), the convex rib structure is located above the top of the push block 5 and is used to prevent the push block 5 from moving upward.

[0080] Specifically, the housing can cooperate with the base 7 to form a packaging structure to package the first touch panel 1, the first static contact 2, the second touch panel 3, the second static contact 4, the push block 5, the electromagnetic drive assembly 6 and other components of the relay to form a complete relay product. The guide groove 704 and the rib structure can limit the freedom of movement of the push block 5, ensuring that the push block 5 can move smoothly along the preset path, thereby better realizing the transmission effect between the first touch panel 1 and the second touch panel 3. Specifically, the guide groove 704 can be as follows Figure 3 As shown, the bottom and left and right sides of the push block 5 are limited, and the convex rib structure can extend downward from the top of the shell to a position where there is a certain gap with the top of the push block 5, so as to limit the top of the push block 5. It should be noted that when the partition structure 703 and the guide groove 704 are provided on the base 7 at the same time, the partition structure 703 and the guide groove 704 can be an integrated structure integrally formed on the base 7.

[0081] Optionally, refer to Figures 1 to 3 The electromagnetic drive assembly 6 includes an armature 601, a yoke 602 and a coil assembly 603; one end of the armature 601 is arranged above the coil assembly 603, the middle part of the armature 601 is rotatably connected to the yoke 602, and the other end of the armature 601 extends downward to the first touch plate 1 to form an actuating structure 6011; the coil assembly 603 is used to attract one end of the armature 601 to approach the coil assembly 603 through an electromagnetism effect, so that the actuating structure 6011 swings in a direction close to the first touch plate 1 and pushes the first touch plate 1 to move in the first direction.

[0082] In this embodiment, the armature 601 can be set to Figure 3 In the "L" shape shown, the horizontal portion of the armature 601 is arranged above the coil assembly 603, the vertical portion of the armature 601 is located between the side of the coil assembly 603 and the first touch plate 1, and the lower end of the vertical portion of the armature 601 constitutes an actuating structure 6011. When the coil assembly 603 is energized, the magnetic field generated by the electromagnetism effect can drive the armature 601 to rotate relative to the yoke 602, as shown in FIG. Figure 3 As shown, one end of the armature 601 (i.e., the lateral part of the armature 601) rotates downward and approaches the top of the coil assembly 603 under the attraction of the magnetic field, while the other end of the armature 601 (i.e., the vertical part of the armature 601) rotates upward and contacts the first contact plate 1, and then the actuating structure 6011 pushes the first contact plate 1 to move in the first direction to achieve the subsequent function of moving and static contact contact and branch conduction. When the coil assembly 603 is powered off, the magnetic field disappears. At this time, one end of the armature 601 (i.e., the lateral part of the armature 601) rotates upward and away from the top of the coil assembly 603 without the attraction of the magnetic field, while the other end of the armature 601 (i.e., the vertical part of the armature 601) rotates in a direction away from the first contact plate 1, so that the first moving contact 1021 can be separated from the first static contact 2 and the second moving contact 3021 can be separated from the second static contact 4, so as to achieve the disconnection of the corresponding branch.

[0083] Preferably, an auxiliary elastic member 604 may be provided at the position where the armature 601 is rotatably connected to the yoke 602, such as Figure 3As shown, the elastic force applied by the auxiliary elastic member 604 to the armature 601 can make the armature 601 have a tendency to rotate in the clockwise direction (that is, one end of the armature 601 rotates in a direction away from the top of the coil assembly 603, and the other end of the armature 601 rotates in a direction away from the first contact plate 1); based on the above configuration, when the coil assembly 603 is powered off and the magnetic field disappears, the armature 601 will rotate to a corresponding position under the elastic force of the auxiliary elastic member 604 when the magnetic field force is lost, so that the first moving contact 1021 is separated from the first static contact 2, and the second moving contact 3021 is separated from the second static contact 4, thereby realizing the automatic reset operation of each device and the automatic disconnection operation of the corresponding branch after power failure, and improving the convenience of use. Among them, the auxiliary elastic member 604 can be a spring, an elastic colloid, etc., which is not limited here.

[0084] Optionally, refer to Figures 1 to 3 The electromagnetic drive assembly 6 also includes a bushing 605, which is made of insulating material and is sleeved on the other end of the armature 601. The bushing 605 is provided with a third arc boss 6051, and the third arc boss 6051 is used to abut against the first touch plate 1.

[0085] By providing the bushing 605 and using the bushing 605 as the actuating structure 6011 to push the first touch plate 1 to swing, it is possible to avoid the armature 601 as a conductor directly contacting the first touch plate 1 to cause a short circuit fault, and also to provide a protective effect for the armature 601 and the first touch plate 1. The third arc boss 6051 can be configured as follows Figure 3 The cylindrical structure shown in the figure has a central axis which can be arranged horizontally, and the central axis of the cylindrical structure is parallel to the rotation axis of the armature 601 and perpendicular to the moving path of the push block 5, and the cylindrical surface of the cylindrical structure is used to abut against the first touch plate 1; in this way, the third arc boss 6051 can change the surface contact form between the actuating structure 6011 and the first touch plate 1 into a line contact form; when the bushing 605 rotates a certain angle with the armature 601, even if the two opposite side surfaces between the bushing 605 and the first touch plate 1 are in a non-parallel state, the abutment between the third arc boss 6051 and the first touch plate 1 can still be utilized to stably realize the transmission between the armature 601 and the first touch plate 1, thereby improving the adaptability between the armature 601 and the first touch plate 1.

[0086] Optionally, refer to Figure 1 The electromagnetic relay also includes a base 7, a first contact plate 1 is used to connect the first signal terminal, a first static contact 2 is used to connect the third signal terminal, a second contact plate 3 is used to connect the second signal terminal, and a second static contact 4 is used to connect the fourth signal terminal. The first signal terminal, the second signal terminal, the third signal terminal, and the fourth signal terminal respectively constitute four corner parts of a rectangle on the base 7.

[0087] One of the first signal terminal and the third signal terminal is an electrical signal input terminal, and the other is an electrical signal output terminal; one of the second signal terminal and the fourth signal terminal is an electrical signal input terminal, and the other is an electrical signal output terminal. Illustrated, through holes can be respectively provided on the base 7 corresponding to the first signal terminal, the second signal terminal, the third signal terminal, and the fourth signal terminal. The first signal terminal, the second signal terminal, the third signal terminal, and the fourth signal terminal can be provided in the form of terminals through the corresponding through holes and extend downward to the bottom of the base 7, so as to be connected with the corresponding electrical signal output device and the electrical signal receiving device.

[0088] Based on the arrangement of the first signal terminal, the second signal terminal, the third signal terminal and the fourth signal terminal on the base 7, the parts of each signal terminal exposed to the electromagnetic relay and the internal structure layout of the electromagnetic relay can be arranged in an orderly and reasonable manner, thereby facilitating the use of the electromagnetic relay while ensuring the normal operation of the electromagnetic relay.

[0089] On the other hand, in the existing electromagnetic relay, since the reserved space between the side of each contact and the plastic side plate used for separation is small, the contact will wear and spread to the surrounding during the electrical life, and the worn contacts will adhere to the plastic side plate under the action of high temperature, so that the actual breaking space distance is reduced, thereby causing the relay's breaking performance to decrease. Based on the arrangement of each signal terminal in this embodiment, the position of each contact can be relatively dispersed, ensuring that sufficient space is reserved around each moving contact and each static contact; even after the electrical life is over, the plastic side plate between the moving contact and the static contact is not easy to produce carbon deposits, protrusions and powder under arc erosion, that is, the plastic side plate is not easy to cause insulation degradation due to arc contact, which can ensure the insulation effect, thereby effectively avoiding the problem of reduced relay breaking performance.

[0090] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electromagnetic relay, characterized in that: include: A first touch panel (1) provided with a first moving contact point (1021); A first static contact (2) is arranged at a distance from the first moving contact (1021); A second touch plate (3) provided with a second moving contact point (3021); A second static contact (4) is arranged at a distance from the second moving contact (3021); A push block (5) is arranged between the first touch plate (1) and the second touch plate (3); An electromagnetic drive component (6) has an actuating structure (6011); the electromagnetic drive component (6) is used to drive the actuating structure (6011) to move in a closing direction through an electromagnetism effect, so as to drive the first touch plate (1) to move in a first direction through the actuating structure (6011), thereby causing the first touch plate (1) to abut against the push block (5) and causing the first movable contact (1021) to contact the first static contact (2); the push block (5) is used to drive the second touch plate (3) to move in a second direction under the drive of the first touch plate (1), so as to cause the second movable contact (3021) to contact the second static contact (4).

2. The electromagnetic relay according to claim 1, characterized in that: The electromagnetic relay also includes a base (7); The first touch plate (1) is made of elastic material and has a first end and a second end that are arranged opposite to each other, the first end is connected to the base (7), the second end is provided with the first moving contact (1021), and the second end abuts against the actuating structure (6011) under elastic preload; the actuating structure (6011) is used to push the second end to swing along the first direction with the first end as the center, so that the first moving contact (1021) contacts the first static contact (2); And / or, the second touch plate (3) is made of elastic material and has a third end and a fourth end that are arranged opposite to each other, the third end is connected to the base (7), the fourth end is provided with the second moving contact (3021), and the fourth end abuts against the push block (5) under elastic preload; the push block (5) is used to push the fourth end to swing along the second direction with the third end as the center, so that the second moving contact (3021) contacts the second static contact (4).

3. The electromagnetic relay according to claim 2, characterized in that: The base (7) is provided with a first clamping structure (701), and the first end portion is clamped in the first clamping structure (701); the first moving contact point (1021) is located on one side surface of the first touch plate (1), and the other side surface of the first touch plate (1) is in contact with the actuating structure (6011); And / or, the base (7) is provided with a second clamping structure (702), and the third end is clamped in the second clamping structure (702); the second moving contact (3021) is located on one side surface of the second touch plate (3), and the other side surface of the second touch plate (3) is in contact with the push block (5).

4. The electromagnetic relay according to claim 3, characterized in that: The first touch panel (1) comprises a first plate body (101) and a first spring sheet (102); the first plate body (101) is clamped in the first gap structure (701), and the first plate body (101) is used to connect a first signal end; one end of the first spring sheet (102) is connected between the first plate body (101) and a side wall of the first gap structure (701), the first moving contact point (1021) is arranged at the other end of the first spring sheet (102), and the first spring sheet (102) abuts against the actuating structure (6011) under elastic preload; And / or, the second touch plate (3) comprises a second plate body (301) and a second spring sheet (302); the second plate body (301) is clamped in the second gap structure (702), and the second plate body (301) is used to connect the second signal end; one end of the second spring sheet (302) is connected between the second plate body (301) and the side wall of the second gap structure (702), the second moving contact (3021) is arranged at the other end of the second spring sheet (302), and the second spring sheet (302) abuts against the push block (5) under elastic preload.

5. The electromagnetic relay according to claim 3, characterized in that: The first end portion is provided with a first convex point structure (1011), and the first convex point structure (1011) is in point contact with the side wall of the first sandwich structure (701); And / or, the third end is provided with a second protrusion structure (3011), and the second protrusion structure (3011) is in point contact with the side wall of the second gap structure (702).

6. The electromagnetic relay according to claim 1, characterized in that: A first arc boss (501) is provided on the side of the push block (5) facing the first touch plate (1); when the first touch plate (1) moves along the first direction, the first arc boss (501) is used to abut against the first touch plate (1); And / or, a second arc boss (502) is provided on a side of the push block (5) facing the second touch plate (3); when the push block (5) moves in a direction approaching the second touch plate (3) driven by the first touch plate (1), the second arc boss (502) is used to abut against the second touch plate (3); And / or, the electromagnetic relay further comprises a base (7), the base (7) being provided with a partition structure (703), the first touch plate (1) and the second touch plate (3) being respectively arranged on both sides of the partition structure (703), the partition structure (703) being provided with an avoidance channel (7031), and the push block (5) moving along the avoidance channel (7031) between the first touch plate (1) and the second touch plate (3).

7. The electromagnetic relay according to claim 1, characterized in that: The electromagnetic relay further comprises a base (7), the base (7) being provided with a guide groove (704), the guide groove (704) extending from the first contact plate (1) to the second contact plate (3), the bottom of the push block (5) being slidably fitted in the guide groove (704); And / or, the electromagnetic relay further comprises a housing, wherein the first touch plate (1), the first static contact (2), the second touch plate (3), the second static contact (4), the push block (5), and the electromagnetic drive assembly (6) are arranged in an inner cavity of the housing; the housing is provided with a convex rib structure, the convex rib structure is located above the top of the push block (5) and is used to prevent the push block (5) from moving upward.

8. The electromagnetic relay according to claim 1, characterized in that: The electromagnetic drive assembly (6) comprises an armature (601), a yoke (602) and a coil assembly (603); one end of the armature (601) is arranged above the coil assembly (603), the middle part of the armature (601) is rotatably connected to the yoke (602), and the other end of the armature (601) extends downward to the first touch plate (1) to form the actuating structure (6011); the coil assembly (603) is used to attract one end of the armature (601) to approach the coil assembly (603) through an electromagnetism effect, so that the actuating structure (6011) swings in a direction close to the first touch plate (1) and pushes the first touch plate (1) to move in the first direction; And / or, the push block (5) is made of insulating material.

9. The electromagnetic relay according to claim 8, characterized in that: The electromagnetic drive assembly (6) further comprises an auxiliary elastic member (604), wherein the auxiliary elastic member (604) is connected to the yoke (602); the auxiliary elastic member (604) is used to abut against the armature (601) so as to cause one end of the armature (601) to have a tendency to move away from the coil assembly (603) through an elastic force; And / or, the electromagnetic drive component (6) further includes a bushing (605), the bushing (605) is made of insulating material, the bushing (605) is sleeved on the other end of the armature (601), the bushing (605) is provided with a third circular arc boss (6051), and the third circular arc boss (6051) is used to abut against the first touch plate (1).

10. The electromagnetic relay according to claim 1, characterized in that: The electromagnetic relay further comprises a base (7), the first contact plate (1) being used to connect a first signal terminal, the first static contact (2) being used to connect a third signal terminal, the second contact plate (3) being used to connect a second signal terminal, the second static contact (4) being used to connect a fourth signal terminal, the first signal terminal, the second signal terminal, the third signal terminal and the fourth signal terminal respectively forming four corner parts of a rectangle on the base (7).

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