Electromagnetic relay

Abstract

The utility model discloses an electromagnetic relay, which belongs to the technical field of low-voltage electric appliances, and comprises a shell, a top cover, a contact piece assembly, a push plate and a switch piece, the top cover is arranged on the shell, the contact piece assembly is arranged in the shell, and the contact piece assembly comprises a normally open static contact and a normally closed static contact which are oppositely arranged; the push plate is arranged in the shell in a sliding mode and connected with the movable contact spring, the switch piece is arranged on the top cover, one of the switch piece and the top cover is provided with a first clamping groove and a second clamping groove, and the other one of the switch piece and the top cover is provided with a clamping strip. According to the electromagnetic relay provided by the utility model, the switch piece is in the locking position, the switch piece abuts against the push plate, the push plate is kept in the first state position, and the clamping strip is clamped with the first clamping groove; when the switch piece is in the non-locking position, the push plate can be freely switched between the first state position and the second state position, and the clamping strip is clamped with the second clamping groove, so that mistaken touch can be prevented, and the reliability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to an electromagnetic relay. Background Art

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

[0003] In the prior art, an electromagnetic relay usually includes a manual switch element for testing and detecting the electromagnetic relay. However, during the test, the switch element may be accidentally touched, resulting in abnormal detection. Utility Model Content

[0004] The utility model aims to provide an electromagnetic relay which can prevent false touch and has high reliability.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] An electromagnetic relay is provided, comprising:

[0007] shell;

[0008] A top cover, disposed on the outer shell;

[0009] A contact assembly is disposed in the housing, the contact assembly comprising a normally open static contact and a normally closed static contact that are relatively disposed, and a movable spring disposed between the normally open static contact and the normally closed static contact;

[0010] A push plate is slidably disposed in the housing and connected to the movable spring. The push plate slides relative to the housing and has a first state position to a second state position; wherein,

[0011] In the first state, the movable spring piece abuts against the normally open static contact;

[0012] In the second state, the movable spring is in contact with the normally closed static contact; and

[0013] A switch member is arranged on the top cover, one of the switch member and the top cover is provided with a first card slot and a second card slot, and the other is provided with a card strip, and the switch member slides relative to the top cover and has a locking position and a non-locking position; wherein,

[0014] In the locking position, the card strip is engaged with the first card slot, and the switch member is abutted against the push plate, and the push plate is maintained in the first state position;

[0015] In the non-locking position, the locking strip is locked with the second locking slot, and the push plate can be freely switched between the first state position and the second state position.

[0016] Optionally, a sliding hole is provided on the top cover, a sink groove is provided on a side of the top cover facing the shell, and the clamping strip is provided on a side of the top cover facing away from the shell;

[0017] The switch component includes an operating part, an intermediate part and an execution part which are connected in sequence, the operating part is arranged on the side of the top cover facing away from the outer shell, and the first card slot and the second card slot are arranged on the side of the operating part facing the outer shell, the intermediate part is passed through the sliding hole, and the execution part is slidably arranged in the sinking groove and can be abutted against the push plate.

[0018] Optionally, a side edge of the top cover is provided with a mounting channel, the mounting channel is communicated with the sliding hole, and the middle portion can be passed through the mounting channel into the sliding hole.

[0019] Optionally, the switch member is provided with a side plate at the installation channel, and the side plate can cover the sliding hole.

[0020] Optionally, the operating portion is provided with anti-slip grooves.

[0021] Optionally, it also includes:

[0022] An electromagnetic component is disposed in the housing, the electromagnetic component is connected to the push plate, and the electromagnetic component has a power-off state and a power-on state;

[0023] The lighting assembly comprises a light emitting diode, wherein the light emitting diode is electrically connected to the electromagnetic assembly; wherein,

[0024] In the power-off state, the light emitting diode is off;

[0025] In the power-on state, the light emitting diode is in a lighted state.

[0026] Optionally, a light guide column is further included, and the light guide column is arranged on one side of the lighting assembly, and the light of the light emitting diode can be guided to the top cover through the light guide column.

[0027] Optionally, the lighting assembly is disposed at the bottom of the housing, the light guide column is disposed in the housing, the first end of the light guide column extends to one side of the lighting assembly, and the second end of the light guide column extends to the top cover.

[0028] Optionally, the top cover and the light guide column are integrally formed.

[0029] Optionally, a mounting platform is provided at the first end of the light guide column, a light focusing groove is provided on the mounting platform, and the light emitting diode is located in the light focusing groove.

[0030] Beneficial effects:

[0031] The electromagnetic relay provided by the utility model has a switch in the locked position, the switch and the push plate are held against each other, and the push plate is kept in the first state position, that is, the electromagnetic relay can be tested without electricity, and the card strip is engaged with the first card slot to prevent accidental touch, and the reliability is high. When the switch is in the non-locked position, the push plate can be freely switched between the first state position and the second state position, that is, the electromagnetic relay can be tested in the non-locked state, and the card strip is engaged with the second card slot to prevent accidental touch, and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a cross-sectional view of the electromagnetic relay provided by the utility model;

[0033] Figure 2 It is an exploded diagram of the electromagnetic relay provided by the utility model;

[0034] Figure 3 It is a structural schematic diagram of the switch element provided by the utility model;

[0035] Figure 4 This is a structural schematic diagram of a top cover provided by the utility model from one perspective;

[0036] Figure 5 This is a schematic structural diagram of another viewing angle of the top cover provided by the utility model;

[0037] Figure 6 It is a structural schematic diagram of the electromagnetic relay provided by the utility model in the power-on state;

[0038] Figure 7 It is a structural schematic diagram of the electromagnetic relay provided by the utility model in a power-off state;

[0039] Figure 8 This is a structural schematic diagram of a base provided by the utility model from one perspective;

[0040] Fig. 9 This is a structural schematic diagram of the base provided by the utility model from another viewing angle;

[0041] Fig.10 This is a structural schematic diagram of an implementation mode of the housing provided by the utility model;

[0042] Fig.11 It is a structural schematic diagram of an implementation mode of the push plate provided by the utility model;

[0043] Fig.12It is a structural schematic diagram of an implementation mode of the movable spring provided by the utility model;

[0044] Fig.13 This is a structural schematic diagram of another embodiment of the movable spring provided by the utility model from one viewing angle;

[0045] Fig.14 This is a structural schematic diagram from another perspective of another embodiment of the movable spring provided by the utility model;

[0046] Fig.15 It is a structural schematic diagram of another embodiment of the push plate provided by the utility model;

[0047] Fig.16 It is a structural schematic diagram of an electromagnetic relay with a second elastic member provided by the utility model;

[0048] Fig.17 It is a partial cross-sectional view of the electromagnetic assembly provided by the utility model;

[0049] Fig.18 It is a schematic diagram of the matching structure of the electromagnetic assembly and the second elastic member provided by the utility model;

[0050] Fig.19 It is a structural schematic diagram of the second elastic member provided by the utility model;

[0051] Fig. 20 It is a structural schematic diagram of the armature provided by the utility model;

[0052] Fig.21 It is a structural schematic diagram of the magnetic yoke provided by the utility model;

[0053] Fig. 22 It is a structural schematic diagram of the bracket provided by the utility model;

[0054] Fig.23 It is a schematic diagram of the structure of the plug pin provided by the utility model;

[0055] Fig.24 It is a structural schematic diagram of the lighting assembly provided by the utility model;

[0056] Fig.25 It is a schematic diagram of light refraction of the lighting assembly provided by the utility model through a light guide column;

[0057] Fig.26 It is a schematic diagram of the light path of the light guide column provided by the utility model;

[0058] Fig. 27 This is a structural schematic diagram of an implementation mode of the light guide column provided by the utility model;

[0059] Fig.28It is a structural schematic diagram of another embodiment of the light guide column provided by the utility model;

[0060] Fig.29 This is a structural schematic diagram of another embodiment of the light guide column provided by the utility model;

[0061] Fig.30 It is a structural schematic diagram of another embodiment of the housing provided by the utility model.

[0062] In the figure:

[0063] 100, housing; 110, first adhesive groove; 120, positioning rib; 130, first protrusion; 140, second adhesive groove; 150, first fixing groove; 160, long groove; 161, clearance groove;

[0064] 200, top cover; 210, clip strip; 220, slide hole; 221, sink groove; 222, installation channel; 230, limit protrusion; 240, first clip; 250, second clip; 260, third clip; 270, transparent indicator window; 280, convex lens; 290, second fixing groove;

[0065] 300, contact piece assembly; 310, normally open static contact; 320, normally closed static contact; 330, moving spring; 331, moving contact; 332, semi-ring groove; 333, first bayonet; 334, connecting plate; 3341, retaining edge; 340, terminal block;

[0066] 400, push plate; 410, push block; 420, stop block; 430, shift fork; 431, second bayonet; 432, connecting column; 440, connecting block; 441, connecting groove; 450, hook; 460, slide groove; 470, warning sign;

[0067] 500, switch member; 510, first slot; 520, second slot; 530, operating portion; 540, middle portion; 550, execution portion; 560, side panel;

[0068] 600, electromagnetic assembly; 610, electromagnetic body; 611, bracket; 6111, center hole; 6112, positioning block; 6113, shoulder; 6114, blind insertion hole; 612, coil; 613, iron core; 6131, stopper; 614, yoke; 6141, perforation; 6142, riveted protrusion; 6143, limiting column; 620, armature; 621, first limiting groove; 622, second limiting groove; 623, third bayonet; 624, contour chamfer; 630, pin; 631, lead-out portion; 632, connecting portion; 633, inserting portion; 634, welding portion;

[0069] 710, lighting assembly; 711, light emitting diode; 712, PCB board; 7121, plug-in channel; 7122, positioning hole; 713, resistor; 720, light guide column; 7211, first chamfer; 7212, first concave arc surface; 722, second chamfer; 7231, mounting platform; 7232, focusing groove; 7233, third chamfer; 7234, second concave arc surface;

[0070] 810, first elastic member; 811, first edge; 812, second edge; 820, coil spring; 830, second elastic member; 8301, slot; 831, first folded edge; 832, second folded edge; 8321, connecting edge; 83211, riveting hole; 8322, yielding edge; 833, third folded edge; 834, fourth folded edge; 8341, limiting edge; 835, through slot;

[0071] 900, base; 910, positioning groove; 920, receiving groove; 921, first protrusion; 922, second protrusion; 923, third protrusion; 930, limiting channel; 940, snap groove; 950, installation groove; 951, positioning column. DETAILED DESCRIPTION

[0072] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0073] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0075] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0076] Reference Figure 1 and Figure 2 As shown, this embodiment provides an electromagnetic relay, which includes a housing 100 , a top cover 200 , a contact assembly 300 , a push plate 400 and a switch member 500 .

[0077] Specifically, the top cover 200 is disposed on the housing 100 , and the cavity of the housing 100 can be sealed by the top cover 200 .

[0078] Specifically, the contact assembly 300 is disposed in the housing 100, and the contact assembly 300 includes a normally open static contact 310 and a normally closed static contact 320 that are relatively disposed, and a movable spring piece 330 disposed between the normally open static contact 310 and the normally closed static contact 320. The push plate 400 is slidably disposed in the housing 100 and connected to the movable spring piece 330. The push plate 400 slides relative to the housing 100 and has a first state position to a second state position. In the first state position, the movable spring piece 330 abuts against the normally open static contact 310; in the second state position, the movable spring piece 330 abuts against the normally closed static contact 320.

[0079] Specifically, the switch member 500 is disposed on the top cover 200, one of the switch member 500 and the top cover 200 is provided with a first card slot 510 and a second card slot 520, and the other is provided with a card strip 210, and the switch member 500 slides relative to the top cover 200 and has a locking position and an unlocking position. In the locking position, the card strip 210 is engaged with the first card slot 510, and the switch member 500 is held against the push plate 400, and the push plate 400 is maintained in the first state position; in the unlocking position, the card strip 210 is engaged with the second card slot 520, and the push plate 400 can be freely switched between the first state position and the second state position.

[0080] In this embodiment, the switch member 500 is in the locked position, the switch member 500 and the push plate 400 are held against each other, and the push plate 400 is kept in the first state position, that is, the electromagnetic relay can be tested without power lock, and the card strip 210 is engaged with the first card slot 510 to prevent accidental touch, and the reliability is high. The switch member 500 is in the non-locked position, the push plate 400 can be freely switched between the first state position and the second state position, that is, the electromagnetic relay can be tested in the non-locked state, and the card strip 210 is engaged with the second card slot 520 to prevent accidental touch, and the reliability is high.

[0081] In this embodiment, refer to Figures 1 to 5 As shown, the top cover 200 is provided with a sliding hole 220, and the sliding hole 220 is provided with a recessed groove 221 on the side of the top cover 200 facing the housing 100, and the side of the top cover 200 facing away from the housing 100 is provided with a clamping strip 210; the switch member 500 includes an operating portion 530, an intermediate portion 540 and an execution portion 550 connected in sequence, the operating portion 530 is provided on the side of the top cover 200 facing away from the housing 100, and the side of the operating portion 530 facing the housing 100 is provided with a first clamping groove 510 and a second clamping groove 520, the intermediate portion 540 is penetrated in the sliding hole 220, and the execution portion 550 is slidably provided in the recessed groove 221 and can abut against the push plate 400. In this embodiment, by limiting the sliding direction of the execution portion 550 through the recessed groove 221, the sliding operating portion 530 can make the switch member 500 stably slide and switch between the locking position and the non-locking position. In addition, a first card slot 510 and a second card slot 520 are disposed on the operating portion 530 , and a card strip 210 is disposed on the top cover 200 , which facilitates molding and manufacturing.

[0082] Exemplarily, the operating portion 530 , the middle portion 540 and the execution portion 550 form an I-shaped structure, so that the connection between the switch member 500 and the top cover 200 is stable and reliable.

[0083] Exemplarily, the operating portion 530 is provided with an anti-slip structure, such as an anti-slip pattern, and the anti-slip pattern may be convex strips arranged side by side.

[0084] Exemplarily, the push plate 400 is provided with a push block 410 that can abut against the execution part 550 , and the execution part 550 can push the push block 410 to convert the push plate 400 from the second state position to the first state position.

[0085] In a feasible embodiment, a mounting channel 222 is provided on one side edge of the top cover 200 , and the mounting channel 222 is connected to the slide hole 220 . The middle portion 540 can be passed through the slide hole 220 through the mounting channel 222 , so as to facilitate the assembly of the switch component 500 on the top cover 200 .

[0086] Exemplarily, the end surface of the housing 100 may block the installation channel 222 to prevent the installation channel 222 from communicating with the cavity of the housing 100 through a channel other than the sliding hole 220 formed between the top cover 200 and the housing 100 .

[0087] In a feasible implementation manner, the switch member 500 is provided with a side plate 560 at the installation channel 222 , and the side plate 560 can cover the sliding hole 220 to prevent foreign matter from entering the cavity of the housing 100 .

[0088] In this embodiment, refer to Figure 1 and Figure 2 As shown, the electromagnetic relay also includes an electromagnetic component 600 and a lighting component 710. The electromagnetic component 600 is arranged in the housing 100, and the electromagnetic component 600 is connected to the push plate 400. The electromagnetic component 600 has a power-off state and a power-on state; the lighting component 710 includes a light-emitting diode 711, and the light-emitting diode 711 is electrically connected to the electromagnetic component 600. Among them, in the power-off state, the light-emitting diode 711 is in an off state; in the power-on state, the light-emitting diode 711 is in a lit state. In this embodiment, the on-off state of the current electromagnetic component 600 can be judged by observing the lighting and extinguishing of the light-emitting diode 711, and the test detection of the electromagnetic relay can be better realized.

[0089] In this embodiment, the electromagnetic assembly 600 is in the power-off state, and the push plate 400 is maintained in the second state position; the electromagnetic assembly 600 is in the power-on state, and the push plate 400 is maintained in the first state position. Exemplarily, the electromagnetic assembly 600 switches from the power-off state to the power-on state, and the push plate 400 switches from the first state position to the second state position, and the movable spring piece 330 is separated from the normally closed static contact 320 and abuts against the normally open static contact 310 for conduction. The electromagnetic assembly 600 switches from the power-on state to the power-off state, and the push plate 400 switches from the second state position to the first state position, so that the movable spring piece 330 is separated from the normally open static contact 310 and abuts against the normally closed static contact 320 for conduction.

[0090] In this embodiment, refer to Figure 6 and Figure 7As shown, the electromagnetic relay further includes a first elastic member 810, which is connected to the push plate 400. The first elastic member 810 enables the push plate 400 to always have a tendency to switch from the first state position to the second state position; the electromagnetic assembly 600 includes an electromagnetic body 610 and an armature 620, and the first end of the armature 620 is connected to the push plate 400. In this embodiment, the electromagnetic assembly 600 is switched from the power-off state to the power-on state. Under the magnetic attraction of the electromagnetic body 610 to the armature 620, the push plate 400 switches from the first state position to the second state position. The push plate 400 pushes against the push spring 330 to make the movable spring 330 separate from the normally closed static contact 320 and abut against the normally open static contact 310 for conduction. Under the continuous magnetic attraction of the electromagnetic body 610 to the armature 620, the movable spring 330 maintains contact and conduction with the normally open static contact 310, which is stable and reliable. The electromagnetic assembly 600 switches from the power-on state to the power-off state. Under the dual action of the moving spring piece 330 and the first elastic member 810, the push plate 400 pushes the spring piece 330, so that the moving spring piece 330 is separated from the normally open static contact 310 and abuts against the normally closed static contact 320 for conduction, and the first elastic member 810 will not cause elastic attenuation due to current-carrying heat, effectively ensuring that the pressure of the moving spring piece 330 on the normally closed static contact 320 is stable and reliable, reducing the risk of the moving spring piece 330 fusing. In addition, under the mutual cooperation of the moving spring piece 330 and the first elastic member 810, the pressure of the normally closed static contact 320 does not need to leave a large margin, thereby reducing the electromagnetic power and reducing the heat and power consumption.

[0091] Exemplarily, the pressure exerted by the first elastic member 810 on the normally closed static contact 320 through the push plate 400 can be greater than the pressure exerted by the movable spring 330 on the normally closed static contact 320 due to its own elasticity, which can further reduce the margin of the pressure of the normally closed static contact 320.

[0092] Exemplarily, the normally open static contact 310 , the normally closed static contact 320 , and the movable spring 330 are respectively connected to a terminal block 340 to be connected to an external device.

[0093] Exemplarily, a first glue groove 110 is provided at the bottom of the housing 100 , and after the terminal block 340 is inserted into the first glue groove 110 , it can be sealed by glue.

[0094] In this embodiment, refer to Figures 6 to 10 As shown, a base 900 is disposed in the housing 100 , and the first elastic member 810 and the contact assembly 300 are both disposed on the base 900 .

[0095] Exemplarily, the push plate 400 may be slidably connected to the base 900 and / or the electromagnetic body 610. Of course, the push plate 400 may also be connected to the base 900 and the electromagnetic body 610 in other ways, such as a rotational connection, which is not limited in the present application.

[0096] Exemplarily, at least one positioning rib 120 is provided in the housing 100 , and a positioning groove 910 is provided on the base 900 , and the positioning rib 120 is inserted into the positioning groove 910 , so that the base 900 is stably fixed in the housing 100 .

[0097] Specifically, the base 900 is provided with a first protrusion 921, a second protrusion 922 and a third protrusion 923 arranged in a triangular shape, and the first elastic member 810 includes a first side portion 811 and a second side portion 812 arranged at an angle, the first side portion 811 is arranged between the first protrusion 921 and the second protrusion 922, the second side portion 812 is arranged between the second protrusion 922 and the third protrusion 923, and the first side portion 811 is connected to the push plate 400. In this embodiment, the first elastic member 810 is fixed by the first protrusion 921, the second protrusion 922 and the third protrusion 923 arranged in a triangular shape, which is stable and reliable, and convenient for disassembly and assembly.

[0098] Exemplarily, the first elastic member 810 may be provided in a sheet shape and formed by bending.

[0099] Exemplarily, a receiving groove 920 is provided on the base 900, a first protrusion 921 and a third protrusion 923 are provided on the side wall of the receiving groove 920, the first elastic member 810 is provided in the receiving groove 920, and the first edge portion 811 extends outside the receiving groove 920 and is connected to the push plate 400. In this embodiment, the first protrusion 921 and the third protrusion 923 are provided on the side wall of the receiving groove 920, which can improve stability and reduce the risk of fracture of the first protrusion 921 and the third protrusion 923. In addition, by providing the receiving groove 920, the first elastic member 810 can be installed more conveniently, effectively reducing the risk of the first elastic member 810 flying off during the installation process.

[0100] In some embodiments, a stopper 420 is provided on one side of the push plate 400 facing the first elastic member 810, and the stopper 420 abuts against the side surface of the first side portion 811. In the power-off state, the first side portion 811 presses the stopper 420, so that the push plate 400 presses the movable spring piece 330 toward the normally closed static contact 320, so that the pressure of the movable spring piece 330 on the normally closed static contact 320 is stable and reliable.

[0101] In some embodiments, a connecting hole (not shown) is provided on the push plate 400, and the first edge 811 is passed through the connecting hole. The first edge 811 is limited by the connecting hole. It can be understood that, in the power-off state, the first edge 811 squeezes the side wall of the connecting hole so that the push plate 400 squeezes the movable reed 330 toward the normally closed static contact 320, so that the pressure of the movable reed 330 on the normally closed static contact 320 is stable and reliable.

[0102] In some embodiments, the push plate 400 is provided with both a stopper 420 and a connection hole on one side facing the first elastic member 810. For example, the groove wall of the connection hole can be extended to form a stopper 420 to increase the contact area with the first side portion 811 to ensure that the connection between the first side portion 811 and the push plate 400 is stable and reliable. Of course, the push plate 400 and the first side portion 811 can also be connected in other ways, which are not limited in this application.

[0103] In this embodiment, refer to Figure 5 , Figure 8 , Fig.10 and Fig.11 As shown, a limiting protrusion 230 is provided on one side of the top cover 200 facing the housing 100, and the limiting protrusion 230 extends into the cavity of the housing 100 and abuts against the inner wall of the cavity of the housing 100 to form a limit. Exemplarily, the top cover 200 is in the shape of a rectangular plate, and four limiting protrusions 230 may be provided and respectively located at the four corners of the top cover 200 to ensure the assembly accuracy between the housing 100 and the top cover 200.

[0104] Exemplarily, the top cover 200 can be snap-fitted with the housing 100. For example, at least one first snap 240 can be provided on the side of the top cover 200 facing the housing 100, and a protrusion or groove that snaps in one-to-one correspondence with the first snap 240 is provided in the housing 100. Preferably, a first protrusion 130 that can snap-fit ​​with the first snap 240 is provided in the housing 100.

[0105] Exemplarily, the top cover 200 can be snap-fitted with the base 900. For example, at least one second snap 250 can be provided on the top cover 200, and a protrusion or groove snap-fitted with the second snap 250 in a one-to-one correspondence can be provided on the base 900. Preferably, two second snaps 250 are provided on the top cover 200, and two second protrusions (not shown) in a one-to-one correspondence with the second snaps 250 are provided on the base 900, and a snap groove 940 snap-fitted with the second snap 250 is provided on the second protrusion.

[0106] For example, the top cover 200 may be provided with a nameplate, model number, and other markings.

[0107] Exemplarily, the top cover 200 is made of a transparent insulating material, and the execution of the mechanism inside the housing 100 can be observed through the top cover 200 .

[0108] For example, a transparent indication window 270 is provided on the top cover 200, and a warning mark 470 is provided on the push plate 400. When the push plate 400 slides, the warning mark 470 moves synchronously to the transparent indication window 270 for identification. The color of the warning mark 470 can be red, orange or other warning colors by color pen or two-color injection molding.

[0109] Exemplarily, a convex lens 280 is provided on the top cover 200 , through which the abutment between the movable reed 330 and the normally open static contact 310 or the normally closed static contact 320 can be better observed.

[0110] In this embodiment, refer to Figure 6 , Figure 7 , Figures 11 to 15 As shown, a moving contact 331 is disposed on the moving reed 330 , and a semi-annular groove 332 surrounding the moving contact 331 is disposed on the moving reed 330 , so that the moving reed 330 has a good deflection and the extrusion force between the moving contact 331 and the normally open static contact 310 is large enough.

[0111] Specifically, the semi-annular groove 332 can be ohmic in shape, so that the movable reed 330 has a symmetrical structure, and the thrust center of the movable reed 330 coincides with the center of the movable contact 331, thereby reducing the energy loss caused by the torsion of the movable reed 330, and the movable contact 331 can also achieve the purpose of center alignment.

[0112] Specifically, a first end of the movable spring piece 330 is fixed on the base 900 , and a second end of the movable spring piece 330 is connected to the push plate 400 .

[0113] In some embodiments, reference Fig.11 and Fig.12 As shown, the second end of the moving spring 330 is provided with an I-shaped bayonet, and the push plate 400 is provided with a shift fork 430 that matches the I-shaped bayonet. It can be understood that the I-shaped bayonet includes a first bayonet 333 respectively provided at the edges of both sides of the moving spring 330, and the two rods of the shift fork 430 are provided with a second bayonet 431, and the first bayonet 333 is engaged with the second bayonet 431 on the corresponding side to form a limit, so as to ensure the stability of the connection between the moving spring 330 and the push plate 400. In this embodiment, the push plate 400 pushes the moving spring 330 through the inner wall of the second bayonet 431, so that the moving contact 331 abuts against the normally open static contact 310 or the normally closed static contact 320.

[0114] In some embodiments, reference Figures 13 to 15 As shown, a connection block 440 is provided on the push plate 400, and connection grooves 441 are respectively provided on the two side edges of the connection block 440. Two spaced connection plates 334 are extended from the second end of the movable spring piece 330. The connection plates 334 are bent to form a retaining edge 3341 after passing through the connection grooves 441 on the corresponding sides to form a limit, so as to ensure the stability of the connection between the movable spring piece 330 and the push plate 400. In this embodiment, the push plate 400 pushes the push spring piece 330 through the inner wall of the connection groove 441, so that the movable contact 331 abuts against the normally open static contact 310 or the normally closed static contact 320.

[0115] In some embodiments, the movable spring piece 330 provided with the connecting plate 334 may also be connected to the push plate 400 provided with the shift fork 430. Specifically, the connecting plate 334 is inserted into the corresponding second bayonet 431.

[0116] In this embodiment, refer to Fig.16 As shown, the push plate 400 may be provided with a coil spring 820, which can abut against the movable spring 330, and the coil spring 820 is configured to provide a force for the movable spring 330 to press the normally open static contact 310. In this embodiment, the push plate 400 can abut against the movable spring 330 through the coil spring 820, so that the movable spring 330 exerts a greater pressure on the normally open static contact 310, and the pressure is stable and reliable.

[0117] For example, Fig.11 As shown, a connecting post 432 is disposed in the shift fork 430 , and the coil spring 820 can be sleeved on the connecting post 432 .

[0118] For example, Fig.15 As shown, the coil spring 820 can be sleeved on the connecting block 440 .

[0119] In this embodiment, refer to Figure 6 , Figure 7 , Figures 16 to 20 As shown, the electromagnetic assembly 600 also includes a second elastic member 830 disposed on the electromagnetic body 610, and the second end of the armature 620 is inserted between the electromagnetic body 610 and the second elastic member 830. The second elastic member 830 can be in the form of a sheet and formed by bending. In this embodiment, when the electromagnetic assembly 600 is in the power-off state, the second elastic member 830 acts on the second end of the armature 620, so that the armature 620 can push the push plate 400, and cooperate with the first elastic member 810 to force the movable spring 330 to keep squeezing the normally closed static contact 320, and the second elastic member 830 will not cause elastic attenuation due to current-carrying heat, which more effectively ensures that the pressure of the movable spring 330 on the normally closed static contact 320 is stable and reliable, and reduces the risk of the movable spring 330 fusing.

[0120] Specifically, the second elastic member 830 includes a first folded edge 831 and a second folded edge 832 arranged at an angle, a slot 8301 is formed between the first folded edge 831 and the electromagnetic body 610, the second folded edge 832 is connected to the electromagnetic body 610, the second end of the armature 620 is inserted into the slot 8301, and the armature 620 is provided with a first limiting groove 621 on the side facing the first folded edge 831, and a third folded edge 833 is provided on the first folded edge 831, the third folded edge 833 is extended toward the second folded edge 832, and the end of the third folded edge 833 is arranged in the first limiting groove 621, so that the connection between the second end of the armature 620 and the second elastic member 830 is stable and reliable, effectively preventing the armature 620 from making actions other than pushing the push plate 400, and ensuring the action accuracy of the armature 620. Among them, the third folded edge 833 is bent toward the end of the second folded edge 832. In addition, when the electromagnetic assembly 600 switches from the power-on state to the power-off state, the second elastic member 830 undergoes elastic deformation, and the third fold edge 833 squeezes the armature 620 toward the side of the first fold edge 831, thereby forcing the armature 620 to move and cooperate with the first elastic member 810 to switch the push plate 400 from the first state position to the second state position.

[0121] Specifically, the second folding edge 832 is provided with a fourth folding edge 834, the fourth folding edge 834 is extended toward the first folding edge 831, the fourth folding edge 834 is abutted against the second end of the armature 620, and the end of the fourth folding edge 834 is bent toward the armature 620 to form a limited edge 8341, and the limited edge 8341 is abutted against the side of the armature 620 facing the first folding edge 831. Among them, the fourth folding edge 834 is bent toward the end of the first folding edge 831. Among them, the switching of the on and off state of the electromagnetic assembly 600 can cause the second elastic member 830 to produce elastic deformation. When the electromagnetic assembly 600 is switched from the power-on state to the power-off state, the elastic deformation of the second elastic member 830 can make the limited edge 8341 and the third folding edge 833 squeeze the armature 620 toward the side of the first folding edge 831, and cooperate with the first elastic member 810, so that the push plate 400 can be better converted from the first state position to the second state position.

[0122] Specifically, a second limiting groove 622 is provided on the side of the second end of the armature 620 facing the first folding edge 831, and the limiting edge 8341 is provided in the second limiting groove 622, so that the length of the fourth folding edge 834 can be shortened to ensure that the extrusion force of the limiting edge 8341 on the groove wall of the second limiting groove 622 is large enough, and the push plate 400 can be more stably and reliably converted from the first state position to the second state position in cooperation with the first elastic member 810. Exemplarily, the second limiting groove 622 can be right-angled.

[0123] In a feasible implementation, a through slot 835 is provided on the second elastic member 830 , and the through slot 835 extends to the first folded edge 831 and the second folded edge 832 , wherein the third folded edge 833 and the fourth folded edge 834 are both formed by extending the side wall of the through slot 835 .

[0124] In this embodiment, refer to Fig.11 , Fig.15 and Fig. 20 As shown, the first end of the armature 620 is an I-shaped structure, that is, third snap-in slots 623 are respectively provided on the two side edges of the armature 620, and a hook 450 corresponding to the third snap-in slot 623 is provided on the push plate 400. The hook 450 is engaged with the third snap-in slot 623 to limit the position so as to realize the armature 620 and the push plate 400.

[0125] Exemplarily, a contoured chamfer 624 is provided at a position of the armature 620 close to the hook 450 , and the contoured chamfer 624 is located on a side of the armature 620 facing away from the electromagnetic body 610 .

[0126] In this embodiment, refer to Fig.17 , Fig.21 and Fig. 22 As shown, the electromagnetic body 610 includes a bracket 611, a coil 612, an iron core 613 and a yoke 614. The coil 612 is wound on the bracket 611. The bracket 611 is provided with a center hole 6111. The center hole 6111 passes through the first end and the second end of the bracket 611. The first end of the iron core 613 is provided with a stopper 6131. ​​The second end of the iron core 613 is passed through the center hole 6111 at the first end of the bracket 611 and is connected to the yoke 614 at the second end of the bracket 611, and the stopper 6131 abuts against the corresponding end of the center hole 6111.

[0127] Exemplarily, the top cover 200 can be snap-fitted with the bracket 611. For example, Figure 5 and Fig. 22 As shown, at least one third buckle 260 may be provided on the top cover 200, and a protrusion or groove corresponding to the third buckle 260 may be provided on the bracket 611. In this embodiment, the positioning block 6112 is hook-shaped to be engaged with the third buckle 260.

[0128] Illustratively, the bracket 611 may be provided with a groove for accommodating the second elastic member 830 to limit the second elastic member 830 .

[0129] Exemplarily, the yoke 614 may be L-shaped, and the long side of the yoke 614 extends from the second end of the bracket 611 to the first end of the bracket 611, that is, the long side end of the yoke 614 and the stopper 6131 are located at the same end of the bracket 611. More specifically, a through hole 6141 is provided on the short side of the yoke 614, and the second end of the iron core 613 is inserted into the through hole 6141.

[0130] Specifically, a slot 8301 is formed between the end of the long side of the yoke 614 and the first folded edge 831 of the second elastic member 830. It can be understood that the armature 620 is located at the first end of the iron core 613. In this embodiment, the armature 620 is against the long side of the yoke 614 on the side facing the iron core 613, and when the electromagnetic assembly 600 is in the power-on state, under the electromagnetic action of the coil 612, the stopper 6131 is attracted to the armature 620.

[0131] In a possible implementation, Fig.18 As shown, the second folded edge 832 is bent to form a connecting edge 8321 and a yielding edge 8322, the connecting edge 8321 is connected to the long side of the yoke 614, and a gap is formed between the yielding edge 8322 and the long side of the yoke 614, so that the second end of the armature 620 protrudes from the side of the long side of the yoke 614 facing away from the bracket 611. When the electromagnetic assembly 600 is switched from the power-on state to the power-off state, the limiting edge 8341 hooks and pulls the second end of the armature 620, so that the armature 620 can rotate relative to the intersection line of the armature 620 and the yoke 614, which is more suitable for forcing the push plate 400 to switch from the first state position to the second state position.

[0132] For example, Fig.17 , Fig.19 and Fig.21 As shown, the second folded edge 832 can be fixed to the yoke 614 by riveting, and at least one rivet protrusion 6142, for example, two, is provided on the long side of the yoke 614, and the second folded edge 832 is provided with rivet holes 83211 corresponding to the rivet protrusions 6142. Specifically, the connecting edge 8321 is provided with rivet holes 83211.

[0133] For example, Figure 8 and Fig.21 As shown, at least one limiting column 6143 is provided on the long side of the yoke 614, and a limiting channel 930 corresponding to the limiting column 6143 is provided on the base 900. The limiting column 6143 is inserted into the corresponding limiting channel 930 to achieve positioning and assembly of the electromagnetic body 610 and the base 900.

[0134] In a possible implementation, Fig.11 , Fig.15 and Fig. 22 As shown, a positioning block 6112 is provided on the bracket 611, and a slide groove 460 is provided on the push plate 400. The positioning block 6112 is slidably arranged in the slide groove 460 to realize a sliding connection between the electromagnetic body 610 and the push plate 400, thereby realizing the switching of the push plate 400 between the first state position and the second state position.

[0135] In this embodiment, refer to Figure 1 , Fig.17 , Fig. 22 and Fig.23 As shown, the two ends of the bracket 611 are respectively provided with shoulders 6113 to limit the coil 612. The positioning block 6112 is arranged on the shoulder 6113 at the first end of the bracket 611.

[0136] Specifically, a plug-in blind hole 6114 is provided on the shoulder 6113 at the first end of the bracket 611, and a plug-in pin 630 is inserted in the plug-in blind hole 6114. In this embodiment, two plug-in blind holes 6114 that are not connected to each other are provided on the bracket 611, and the plug-in pin 630 includes two lead-out parts 631, and a connecting part 632 is provided between the lead-out parts 631. One end of the lead-out part 631 is bent to form an inserting part 633, and a welding part 634 is provided on the inserting part 633. When assembling, the connecting part 632 is cut off, and the inserting parts 633 are inserted into the plug-in blind holes 6114 one by one, and then the two ends of the coil 612 are wound on the welding part 634 one by one and welded. Exemplarily, the welding part 634 can be bent first, and then the two ends of the welded coil 612 are wound, and finally the welding part 634 is restored to its original state.

[0137] Exemplarily, the insertion blind holes 6114 may be respectively provided on both sides of the shoulder 6113 along the extension direction of the central hole 6111 .

[0138] Of course, the pin 630 may also be injection molded together with the bracket 611, which is not limited in this application.

[0139] In this embodiment, refer to Figure 6 , Figure 7 , Figure 8 and Fig.24 As shown, the lighting assembly 710 can be disposed on the base 900 and located at the bottom of the housing 100 to facilitate the connection between the lighting assembly 710 and the pin 630.

[0140] Specifically, a mounting groove 950 is provided on the base 900, and the lighting assembly 710 is disposed in the mounting groove 950 to ensure the compactness of the structure of the electromagnetic relay.

[0141] Specifically, the lighting assembly 710 further includes a PCB board 712, and a plug channel 7121 is provided on the PCB board 712. The plug pin 630 is plugged into the plug channel 7121 and electrically connected to the PCB board 712 by welding, that is, the light-emitting diode 711 is electrically connected to the coil 612 through the electrical connection between the PCB board 712 and the plug pin 630. Further specifically, two plug channels 7121 are provided on the PCB board 712, and the lead-out portion 631 of the plug pin 630 is plugged into the plug channels 7121 in a one-to-one correspondence. Exemplarily, the plug channel 7121 can be a hole or an open groove provided at the edge of the PCB board 712. Among them, a resistor 713 can also be provided on the PCB board 712. When the electromagnetic assembly 600 is in a powered-on state, the voltage applied to the electromagnetic assembly 600 is divided by the resistor 713, and the light-emitting diode 711 is excited and emits light.

[0142] Illustratively, a positioning column 951 is provided in the mounting groove 950 , a positioning hole 7122 is provided on the PCB board 712 , and the positioning column 951 is inserted into the positioning hole 7122 to achieve positioning and assembly of the lighting assembly 710 .

[0143] For example, Fig.10 As shown, a second glue groove 140 is provided at the bottom of the housing 100 , and after the lead-out portion 631 of the pin 630 is inserted into the second glue groove 140 , it can be sealed by glue.

[0144] In this embodiment, refer to Figure 1 , Figure 6 , Figure 7 and Fig.25 As shown, the electromagnetic relay further includes a light guide column 720 , which is disposed on one side of the lighting assembly 710 . The light of the light emitting diode 711 can be guided to the top cover 200 through the light guide column 720 for easy observation.

[0145] Exemplarily, the material of the light guide column 720 may be a transparent material.

[0146] In some embodiments, reference Figure 25 to Figure 27 As shown, the light guide column 720 is disposed in the housing 100 , the first end of the light guide column 720 extends to one side of the lighting assembly 710 , and the second end of the light guide column 720 extends to the top cover 200 , for easy assembly.

[0147] Exemplarily, the first end of the light guide column 720 may be provided with a first chamfer 7211 , and the chamfered surface of the first chamfer 7211 may refract the light of the light emitting diode 711 to the first end of the light guide column 720 .

[0148] For example, the second end of the light guide column 720 is provided with a first concave arc surface 7212, and the first concave arc surface 7212 can diverge light to facilitate identification. Fig.26and Fig. 27 Arrow line in the middle.

[0149] For example, Fig.10 As shown, a first fixing groove 150 is provided at the bottom of the housing 100 , and the first end of the light guide column 720 is inserted into the first fixing groove 150 .

[0150] In a feasible implementation manner, the second end of the light guide column 720 may abut against the top cover 200. Specifically, Figure 5 As shown, the top cover 200 is provided with a second fixing groove 290, and the second end of the light guide column 720 is inserted into the second fixing groove 290. In another feasible embodiment, the top cover 200 is provided with a through hole (not shown), and the second end of the light guide column 720 is passed through the through hole, which is more convenient for identifying light.

[0151] In other embodiments, referring to Fig.28 As shown, the top cover 200 and the light guide column 720 are integrally formed, and the light guide column 720 is disposed in the housing 100 , and the end of the light guide column 720 extends to one side of the lighting assembly 710 , so that light can better pass through the top cover 200 .

[0152] Exemplarily, the end of the light guide column 720 away from the top cover 200 may be provided with a second chamfer 722 , and the chamfered surface of the second chamfer 722 may refract the light of the light emitting diode 711 to the top cover 200 .

[0153] In some other embodiments, reference Fig.29 and Fig.30 As shown, a mounting platform 7231 is provided at the first end of the light guide column 720, and a light focusing groove 7232 is provided on the mounting platform 7231. The light emitting diode 711 is located in the light focusing groove 7232 to reduce the dispersion of light so that the light guide column 720 can absorb more light.

[0154] Specifically, a long groove 160 is provided on the outer side of the housing 100, and the light guide column 720 is inserted into the long groove 160, and the mounting platform 7231 extends into the housing 100 for easy assembly. Among them, a clearance groove 161 connected to the long groove 160 is provided at the bottom of the housing 100, and the clearance groove 161 can make way for the light guide column 720. After the light guide column 720 is installed in place, the gap between the light guide column 720 and the clearance groove 161 can be sealed by glue.

[0155] Exemplarily, the first end of the light guide column 720 may be provided with a third chamfer 7233, and the chamfered surface of the third chamfer 7233 may refract the light of the LED 711 to the second end of the light guide column 720. The second end of the light guide column 720 may extend to the top cover 200.

[0156] Exemplarily, the second end of the light guide column 720 may be provided with a second concave arc surface 7234, and the second concave arc surface 7234 may diverge light to facilitate identification.

[0157] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. An electromagnetic relay, characterized in that: include: Housing (100); A top cover (200) is disposed on the outer shell (100); A contact assembly (300) is arranged in the housing (100), the contact assembly (300) comprising a normally open static contact (310) and a normally closed static contact (320) arranged opposite to each other, and a movable reed (330) arranged between the normally open static contact (310) and the normally closed static contact (320); A push plate (400) is slidably disposed in the housing (100) and connected to the movable spring (330). The push plate (400) slides relative to the housing (100) and has a first state position to a second state position; wherein, In the first state, the movable spring (330) abuts against the normally open static contact (310); In the second state, the movable spring (330) abuts against the normally closed static contact (320); and A switch member (500) is arranged on the top cover (200); one of the switch member (500) and the top cover (200) is provided with a first card slot (510) and a second card slot (520); the other is provided with a card strip (210); the switch member (500) slides relative to the top cover (200) and has a locking position and a non-locking position; wherein: In the locked position, the clamping strip (210) is clamped with the first clamping slot (510), and the switch member (500) is abutted against the push plate (400), and the push plate (400) is maintained in the first state position; In the non-locking position, the locking strip (210) is locked with the second locking slot (520), and the push plate (400) can be freely switched between the first state position and the second state position.

2. The electromagnetic relay according to claim 1, characterized in that: The top cover (200) is provided with a sliding hole (220), the sliding hole (220) is provided with a sink (221) on a side of the top cover (200) facing the outer shell (100), and the clamping strip (210) is provided on a side of the top cover (200) facing away from the outer shell (100); The switch member (500) comprises an operating portion (530), an intermediate portion (540) and an execution portion (550) which are connected in sequence; the operating portion (530) is arranged on a side of the top cover (200) facing away from the housing (100), and the first card slot (510) and the second card slot (520) are arranged on a side of the operating portion (530) facing the housing (100); the intermediate portion (540) is inserted into the sliding hole (220); and the execution portion (550) is slidably arranged in the sinking groove (221) and can abut against the push plate (400).

3. The electromagnetic relay according to claim 2, characterized in that: A mounting channel (222) is provided on one side edge of the top cover (200), and the mounting channel (222) is connected to the sliding hole (220), and the middle portion (540) can be passed into the sliding hole (220) through the mounting channel (222).

4. The electromagnetic relay according to claim 3, characterized in that: The switch member (500) is provided with a side plate (560) at the installation channel (222), and the side plate (560) can cover the sliding hole (220).

5. The electromagnetic relay according to claim 2, characterized in that: The operating portion (530) is provided with anti-slip grooves.

6. The electromagnetic relay according to any one of claims 1 to 5, characterized in that: Also includes: An electromagnetic component (600) is disposed in the housing (100), the electromagnetic component (600) is connected to the push plate (400), and the electromagnetic component (600) has a power-off state and a power-on state; The lighting assembly (710) comprises a light emitting diode (711), wherein the light emitting diode (711) is electrically connected to the electromagnetic assembly (600); wherein: In the power-off state, the light emitting diode (711) is off; In the power-on state, the light emitting diode (711) is in a lighted state.

7. The electromagnetic relay according to claim 6, characterized in that: It also includes a light guide column (720), which is arranged on one side of the lighting assembly (710), and the light of the light emitting diode (711) can be guided to the top cover (200) via the light guide column (720).

8. The electromagnetic relay according to claim 7, characterized in that: The lighting assembly (710) is disposed at the bottom of the housing (100), the light guide column (720) is disposed in the housing (100), a first end of the light guide column (720) extends to one side of the lighting assembly (710), and a second end of the light guide column (720) extends to the top cover (200).

9. The electromagnetic relay according to claim 7, characterized in that: The top cover (200) and the light guide column (720) are integrally formed.

10. The electromagnetic relay according to claim 7, characterized in that: A mounting platform (7231) is provided at the first end of the light guide column (720), a light focusing groove (7232) is provided on the mounting platform (7231), and the light emitting diode (711) is located in the light focusing groove (7232).

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