Electromagnetic switch with indicating lamp

Abstract

The utility model belongs to the technical field of electromagnetic switches, and particularly relates to an electromagnetic switch with an indicating lamp, which comprises a bottom shell, a top cover, a closing button, an opening button, the bottom shell and a contact pin seat assembled by a buckle, a first contact pin and a second contact pin are assembled on the contact pin seat, and an electromagnetic coil is assembled on one side of an inner cavity of the bottom shell through a mounting frame. A moving seat is assembled on the contact pin seat in a sliding mode, a movable contact plate is arranged on the moving seat through a first spring, the warped plate drives the moving seat to move up and down in a reciprocating mode when swinging, connection and disconnection of the first contact pin and the second contact pin are achieved, a second spring is connected between the moving seat and the top cover, and a sleeve seat is arranged on the top cover. The second lead is propped against the second contact pin through a third spring in the sleeve seat; according to the utility model, the contact pin seat and the bottom shell are assembled in a buckling manner, so that quick disassembly and reassembly during maintenance are facilitated, the electromagnetic switch does not need to be integrally disassembled, the maintenance time and cost are greatly saved, the electrical connection is more reliable, and the stability and durability of the whole structure are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic switches, and specifically relates to an electromagnetic switch with an indicator light. Background Art

[0002] An electromagnetic switch is a device that combines the functions of an electromagnet and a switch. In mechanical equipment, the electromagnetic switch is responsible for controlling power on or off. Electromagnetic switches are widely used in industry and other fields and are key components indispensable in electrical control systems.

[0003] A Chinese patent with the publication number CN220543785U discloses an electromagnetic switch with a display lamp, which includes: a housing; an electromagnetic unit disposed in the housing; a contact unit disposed in the housing; a button unit having a top seat, a power-on button, and a power-off button, the top seat being fastened to the housing, and the power-on button and the power-off button being slidably connected to the top seat respectively; a display lamp fixed between the top seat and the power-on button, having a circuit board, a light-emitting body, and two conducting wires, the two conducting wires being connected to the contact unit; when the power-on button is pressed to conduct electricity, the light-emitting body also emits light, thereby reducing the probability of misjudgment and reducing the occurrence of dangerous situations, and when the power supply is not normally powered, the electromagnetic unit does not act and the light-emitting body does not emit light, that is, the electromagnetic switch remains powered off to remind the operator of abnormal power supply.

[0004] The above electromagnetic switch with a display lamp still has some problems in use. Among them, the electrode plate group is directly assembled on the housing. If the electrode plate group is damaged and needs to be replaced, the entire electromagnetic switch needs to be removed to take out the electrode plate group, which is extremely inconvenient for maintenance in terms of structure. In addition, the conducting wires of the display lamp are located beside the actuating plate in the chamber, and when the actuating plate swings, it may impact the conducting wires, resulting in pulling and breaking of the connections between the two ends of the conducting wires and the display lamp and the electrode plate group, posing a great hidden danger to the normal connection of the display lamp circuit. Moreover, the staff cannot observe whether the display lamp circuit is normal from the outside. If the display lamp circuit is damaged and cannot work properly, it will cause misjudgment by the operator, thereby leading to the occurrence of dangerous accidents. The above electromagnetic switch with a display lamp does not effectively solve these problems. Summary of the Utility Model

[0005] In order to make up for the deficiencies of the existing electromagnetic switch with a display lamp, the utility model makes the maintenance and disassembly of the electrode plate group in the existing electromagnetic switch more convenient and fast, and makes the connection of the indicator lamp circuit more reliable, and proposes an electromagnetic switch with an indicator light.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: an electromagnetic switch with an indicator light according to the present invention comprises a bottom shell, a contact base is assembled on one side of the bottom shell by means of a snap, a first contact and a second contact corresponding to the first contact are assembled on the contact base, the bottom ends of both contacts extend to the outside of the bottom shell, a top cover is assembled on the top of the bottom shell by means of a snap, a closing button and an opening button are slidably connected to the top cover, a transparent sealing shell is assembled on the top cover around the closing button and the opening button, the transparent sealing shell is fixedly assembled on the top cover by means of a pressure cover, an electromagnetic coil is assembled on one side of the inner cavity of the bottom shell by means of a mounting frame, a terminal of the electromagnetic coil is connected to two first wires, the other end of the first wires is connected to one side of the second contact, a seesaw is rotatably assembled on the mounting frame, the seesaw is provided with a tilting end and an adsorption end, the seesaw swings when the closing button and the opening button are pressed, thereby connecting and disconnecting the circuit, an indicator light is assembled on the top cover, a terminal of the indicator light is connected to two second wires, and the second wires are connected to the second contact;

[0007] The contact base is slidably equipped with a moving base, and the moving base is provided with a moving contact plate. The moving base is linked with the seesaw, and the seesaw drives the moving base to move up and down. When the moving base moves upward, the moving contact plate contacts the first contact pin and the second contact pin to conduct electricity between the two. When the moving base moves downward, the moving contact plate separates from the first contact pin and the second contact pin to disconnect the electricity.

[0008] Preferably, the movable touch plate is assembled on the movable seat via a first spring, and the first spring provides a tight connection force for the contact between the movable touch plate and the first contact pin and the second contact pin.

[0009] Preferably, an assembly groove is provided on the movable seat, and a pin is provided on the top cover directly above the assembly groove. A second spring is sleeved on the pin, and the second spring extends to the bottom of the assembly groove.

[0010] Preferably, a through hole is provided on the movable seat, and the tilted end of the rocker plate passes through the through hole and abuts against the movable seat.

[0011] Preferably, a socket is provided on the top cover, one end of the second wire extends into the socket, a third spring is assembled in the socket, one end of the third spring is connected to the second wire, and the other end abuts against the second contact pin.

[0012] Preferably, a first pressing rod is provided on the closing button, the bottom end of the first pressing rod extends into the inner cavity of the bottom case and is directly above the moving seat, a second pressing rod is provided on the opening button, the bottom end of the second pressing rod extends into the inner cavity of the bottom case and is directly above the adsorption end of the rocker, and a fourth spring and a fifth spring are respectively terminated between the closing button and the opening button and the top cover, and the two respectively provide the closing button and the opening button with an upward reset elastic force in the non-pressed state.

[0013] Preferably, a first convex strip is provided on the circumferential side of the mating surface of the transparent sealing case with the top cover, a convex ring is provided on the mating surface of the pressing cover with the transparent sealing case, and the convex ring presses the transparent sealing case during assembly to make it closely fit with the top cover.

[0014] Preferably, a second convex strip is provided on the circumferential side of the mating surface of the transparent sealing case with the pressing cover.

[0015] Preferably, a soft pad is sleeved on the circumferential side of the bottom case below the top cover.

[0016] Advantages of the utility model:

[0017] The utility model provides an electromagnetic switch with an indicator light.

[0018] 1. Improve operation convenience: In the utility model, the contact foot seat and the bottom case are assembled by buckles, which is convenient for quick disassembly and reassembly during maintenance, without the need to disassemble the electromagnetic switch as a whole, greatly saving maintenance time and cost.

[0019] 2. Enhance the reliability of circuit connection: By arranging a first spring between the moving contact plate and the moving seat, it is ensured that the moving contact plate is in close contact with the first contact foot and the second contact foot, and stable circuit connection can be maintained even in a vibrating environment, effectively preventing circuit failures caused by poor contact.

[0020] 3. Improve safety and stability: The combination of the transparent sealing case and the pressing cover on the top cover forms an effective sealing structure to prevent dust and moisture from entering the interior of the electromagnetic switch, ensuring the safe operation of the internal components. At the same time, the design of the second spring prevents the electromagnetic switch from being accidentally turned on due to external vibration in the closed state, further improving the safety of the product.

[0021] 4. Optimize the structural design: The connection mode between the wiring terminal of the electromagnetic coil and the second wire uses the third spring as the conductive medium, which not only ensures the reliability of the electrical connection, but also avoids the influence of the movement of the rocker on the wire, improving the stability and durability of the overall structure. Description of the drawings

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 It is a three-dimensional exploded diagram of the overall structure;

[0024] Figure 2 It is a three-dimensional assembly diagram of the overall structure;

[0025] Figure 3 This is a three-dimensional enlarged view of the structure of the contact foot seat, movable seat, rocker plate and electromagnetic coil;

[0026] Figure 4 This is a cross-sectional view of the internal structure of the electromagnetic switch in the power-off state;

[0027] Figure 5 This is a cross-sectional view of the internal structure of the electromagnetic switch in the energized state;

[0028] Figure 6 yes Figure 5 A magnified view of the structure at point A;

[0029] Legend:

[0030] 1. Bottom shell; 2. Contact base; 201. First contact; 202. Second contact; 3. Top cover; 301. Sleeve; 3011. Third spring; 302. Pin; 3021. Second spring; 4. Close button; 401. First pressure rod; 402. Fourth spring; 5. Open button; 501. Second pressure rod; 502. Fifth spring; 6. Mounting bracket; 7. Electromagnetic coil; 701. First wire; 8. Rocker; 801. Lifting end; 802. Adsorption end; 9. Indicator light; 901. Second wire; 10. Moving base; 101. Through hole; 102. First spring; 103. Moving touch panel; 104. Assembly groove; 11. Transparent sealing shell; 111. First ridge; 112. Second ridge; 12. Pressure cover; 121. Raised ring; 13. Cushion. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Specific examples are given below.

[0033] See alsoFigures 1-6 An electromagnetic switch with an indicator light according to the present utility model includes a bottom case 1. One side of the bottom case 1 is assembled with a contact foot seat 2 by a buckle. A first contact foot 201 and a second contact foot 202 corresponding to the first contact foot 201 are assembled on the contact foot seat 2, and the bottoms of both extend to the outside of the bottom case 1. The top of the bottom case 1 is assembled with a top cover 3 by a buckle. A closing button 4 and an opening button 5 are slidably connected on the top cover 3. A transparent sealing case 11 is covered on the periphery of the closing button 4 and the opening button 5 on the top cover 3. The transparent sealing case 11 is fixedly assembled on the top cover 3 by a gland 12. An electromagnetic coil 7 is assembled on one side of the inner cavity of the bottom case 1 by a mounting bracket 6. Two first wires 701 are connected to the wiring terminals of the electromagnetic coil 7. The other ends of the first wires 701 are connected to one side of the second contact foot 202. A rocker 8 is rotatably assembled on the mounting bracket 6. A lifting end 801 and an adsorption end 802 are provided on the rocker 8. When the closing button 4 and the opening button 5 are pressed, the rocker 8 swings to realize the connection and disconnection of the circuit. An indicator light 9 is assembled on the top cover 3. Two second wires 901 are connected to the wiring terminals of the indicator light 9. The second wires 901 are connected to the second contact foot 202;

[0034] A moving seat 10 is slidably assembled on the contact foot seat 2. A moving contact plate 103 is provided on the moving seat 10. The moving seat 10 and the rocker 8 are in linkage cooperation. When the rocker 8 swings, it drives the moving seat 10 to move up and down reciprocally. When the moving seat 10 moves upward, the moving contact plate 103 contacts the first contact foot 201 and the second contact foot 202 to conduct electricity between them. When the moving seat 10 moves downward, the moving contact plate 103 separates from the first contact foot 201 and the second contact foot 202 to cut off the electricity. A through hole 101 is formed in the moving seat 10. The lifting end 801 of the rocker 8 penetrates into the through hole 101 and abuts against the moving seat 10;

[0035] The closing button 4 is provided with a first pressure rod 401, the bottom end of the first pressure rod 401 extends to the inner cavity of the bottom shell 1 and is located directly above the movable seat 10, and the opening button 5 is provided with a second pressure rod 501, the bottom end of the second pressure rod 501 extends to the inner cavity of the bottom shell 1 and is located directly above the adsorption end 802 on the rocker 8, and the closing button 4 and the opening button 5 are respectively connected to the top cover 3 with a fourth spring 402 and a fifth spring 502, both of which provide upward reset elastic force for the closing button 4 and the opening button 5 to be in an unpressed state. During operation, when the staff uses the electromagnetic switch to open and close the equipment, when the power is turned on, press the opening button 5, and the second pressure rod 501 The first contact pin 201 and the second contact pin 202 are in contact with each other, and the first contact pin 201 and the second contact pin 202 are in contact with each other, thereby making the circuit between the first contact pin 201 and the second contact pin 202 connected. At this time, the second contact pin 202 energizes the electromagnetic coil 7 through the first wire 701, and the electromagnetic coil 7 generates suction to keep the adsorption end 802 and the magnetic end of the electromagnetic coil 7 in a close contact state, thereby making the tilting end 801 maintain the tilting state of the movable base 10, keeping the circuit connected, and the second contact pin 201 and the second contact pin 202 are in contact with each other, thereby making the tilting end 801 maintain the tilting state of the movable base 10, keeping the circuit connected, and the second contact pin 201 and the second contact pin 202 are in contact with each other, thereby making the tilting end 801 maintain the tilting state of the movable base 10, keeping the circuit connected, and the second contact pin 201 and the second contact pin 202 are in contact with each other, The contact pin 202 powers on the indicator light 9 through the second wire 901, so that the staff can check the power status. After releasing the on button 5, the fifth spring 502 loses pressure and rebounds to lift the on button 5 and reset. When the staff needs to turn off the electromagnetic switch, they press the off button 4, the first pressure rod 401 moves down and causes the rocker 8 to swing in the opposite direction, the tilting end 801 swings downward, and the adsorption end 802 swings upward. The first pressure rod 401 moves down and pushes the movable seat 10 to move down, thereby disconnecting the movable touch plate 103 from the first contact pin 201 and the second contact pin 202, so that the circuits between the first contact pin 201 and the second contact pin 202 are disconnected. At this time, the electromagnetic coil 7 is de-energized and no longer generates opposite attraction. When the first and second contact pins 201 and 202 are in operation, the first contact pin 201 and the second contact pin 202 are in operation, and the first and second contact pins 201 and 202 are in operation. When the first and second contact pins 201 and 202 are in operation, ...

[0036] Furthermore, the movable contact plate 103 is assembled on the movable seat 10 through the first spring 102. The first spring 102 provides a force for tightly connecting the movable contact plate 103 with the first contact pin 201 and the second contact pin 202. During operation, when the electromagnetic switch is in the energized state, the movable seat 10 drives the movable contact plate 103 to contact and conduct electricity with the first contact pin 201 and the second contact pin 202. When the movable seat 10 moves upward, the first spring 102 is continuously compressed during its continuous upward movement. Under the action of elastic potential energy, the first spring 102 continuously exerts a reaction force on the movable contact plate 103, making the contact between the movable contact plate 103 and the first contact pin 201 and the second contact pin 202 tighter, and thus making the connection of the circuit more reliable.

[0037] Furthermore, an assembly groove 104 is formed on the movable seat 10. A pin 302 is provided on the top cover 3 directly above the assembly groove 104. A second spring 3021 is sleeved on the pin 302, and the second spring 3021 extends to the inner bottom of the assembly groove 104. During operation, when the electromagnetic switch is turned on, the movable seat 10 moves upward while compressing the second spring 3021. When the electromagnetic switch is turned off, under the elastic potential energy of the second spring 3021, the movable seat 10 is pushed downward to move downward and reset to maintain the off state. When the electromagnetic switch is in the off state, it can prevent the movable seat 10 from moving upward due to external vibration and causing the movable contact plate 103 to touch the first contact pin 201 and the second contact pin 202, resulting in accidental conduction of the circuit.

[0038] Furthermore, a socket 301 is provided on the top cover 3. One end of the second wire 901 extends into the socket 301. A third spring 3011 is assembled in the socket 301. One end of the third spring 3011 is connected to the second wire 901, and the other end abuts against the second contact pin 202. During operation, the third spring 3011 is in a compressed state in the socket 301. Due to elastic potential energy, both ends of the third spring 3011 always exert pressure on the second wire 901 and the second contact pin 202 end. The third spring 3011 serves as a conductive medium between the second wire 901 and the second contact pin 202, ensuring the reliability of the electrical connection between the second wire 901 and the second contact pin 202. Moreover, the position of the second wire 901 on the indicator light 9 is not set inside the bottom case 1 within the swing range of the toggle plate 8, and the movement of the toggle plate 8 will not affect the second wire 901, improving the safety and reliability of the electromagnetic switch.

[0039] Further, a first rib 111 is provided on the transparent sealing shell 11 on the periphery of the mating surface with the top cover 3. A convex ring 121 is provided on the gland 12 on the mating surface with the transparent sealing shell 11. When assembled, the convex ring 121 presses on the transparent sealing shell 11 to make it closely fit with the top cover 3. A second rib 112 is provided on the transparent sealing shell 11 on the periphery of the mating surface with the gland 12. During operation, to ensure the sealing performance inside the electromagnetic switch, when assembling the electromagnetic switch, the transparent sealing shell 11 is placed on the top cover 3, and then the gland 12 is pressed above the transparent sealing shell 11, and the buckle on the gland 12 is snap-connected and fixed with the bottom shell 1. After assembly, the convex ring 121 on the gland 12 applies a downward pressure on the transparent sealing shell 11, deforming the first rib 111 to closely fit with the top cover 3, improving the sealing performance. At the same time, the second rib 112 deforms to closely fit with the gland 12, further improving the sealing performance.

[0040] Further, a soft pad 13 is sleeved on the periphery of the bottom shell 1 below the top cover 3. During operation, when assembling the electromagnetic switch on an external device, the electromagnetic switch is placed in the installation slot of the device. A soft pad 13 is provided between the top cover 3 and the device. The soft pad 13 improves the sealing performance and prevents abnormal knocking and wear caused by hard contact between the electromagnetic switch and the device, greatly improving the service life of the electromagnetic switch.

[0041] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. An electromagnetic switch with an indicator light, comprising a bottom case (1), characterized in that: A contact base (2) is mounted on one side of the bottom shell (1) by a snap fit, a movable base (10) is slidably mounted on the contact base (2), a first contact pin (201) and a second contact pin (202) are mounted on the contact base (2), the bottom ends of both of which extend to the outside of the bottom shell (1), a top cover (3) is mounted on the top of the bottom shell (1) by a snap fit, a closing button (4) and an opening button (5) are slidably mounted on the top cover (3), and a transparent sealing member is mounted on the side cover around the closing button (4) and the opening button (5). The transparent sealing shell (11) is fixedly mounted on the top cover (3) via a pressure cover (12); an electromagnetic coil (7) is mounted on one side of the inner cavity of the bottom shell (1) via a mounting frame (6); the connection end of the electromagnetic coil (7) is connected to two first wires (701); the other end of the first wire (701) is connected to one side of the second contact pin (202); a rocker (8) is rotatably mounted on the mounting frame (6); the rocker (8) swings when the closing button (4) and the opening button (5) are pressed.

2. The electromagnetic switch with an indicator light according to claim 1, characterized in that: The movable seat (10) is provided with a movable contact plate (103). The movable seat (10) and the seesaw (8) are in linkage cooperation. When the seesaw (8) swings, the movable seat (10) is driven to move up and down. When the movable seat (10) moves upward, the movable contact plate (103) contacts the first contact pin (201) and the second contact pin (202) so that the two conduct electricity. When the movable seat (10) moves downward, the movable contact plate (103) is separated from the first contact pin (201) and the second contact pin (202) to disconnect the electricity.

3. The electromagnetic switch with an indicator light according to claim 2, characterized in that: The movable touch plate (103) is assembled on the movable seat (10) via a first spring (102), and the first spring (102) provides a tight connection force for the contact between the movable touch plate (103) and the first contact pin (201) and the second contact pin (202).

4. The electromagnetic switch with an indicator light according to claim 1, characterized in that: The movable seat (10) is provided with an assembly groove (104), and the top cover (3) is provided with a pin (302) directly above the assembly groove (104). A second spring (3021) is sleeved on the pin (302), and the second spring (3021) extends to the bottom of the assembly groove (104).

5. The electromagnetic switch with an indicator light according to claim 1, characterized in that: The seesaw (8) is provided with a tilting end (801) and an adsorption end (802); when the closing button (4) and the opening button (5) are pressed, the seesaw (8) swings to realize the connection and disconnection of the circuit; the top cover (3) is equipped with an indicator light (9); the connection end of the indicator light (9) is connected to two second wires (901); the second wires (901) are connected to the second contact pin (202); a through hole (101) is provided on the movable seat (10); the tilting end (801) of the seesaw (8) penetrates the through hole (101) and abuts against the movable seat (10).

6. The electromagnetic switch with an indicator light according to claim 5, characterized in that: A socket (301) is provided on the top cover (3). One end of the second wire (901) extends into the socket (301). A third spring (3011) is assembled in the socket (301). One end of the third spring (3011) is connected to the second wire (901), and the other end abuts against the second contact pin (202).

7. An electromagnetic switch with an indicator light according to claim 1, characterized in that: A first pressing rod (401) is provided on the closing button (4). The bottom end of the first pressing rod (401) extends into the inner cavity of the bottom shell (1) and is located directly above the moving seat (10). A second pressing rod (501) is provided on the opening button (5). The bottom end of the second pressing rod (501) extends into the inner cavity of the bottom shell (1) and is located directly above the adsorption end (802) of the rocker (8). Fourth springs (402) and fifth springs (502) are respectively terminated between the closing button (4) and the opening button (5) and the top cover (3), and the two respectively provide the closing button (4) and the opening button (5) with upward reset elastic forces to be in the non-pressed state.

8. An electromagnetic switch with an indicator light according to claim 1, characterized in that: First ridges (111) are provided on the circumferential side of the mating surface of the transparent sealing shell (11) with the top cover (3). A convex ring (121) is provided on the mating surface of the gland (12) with the transparent sealing shell (11). When assembled, the convex ring (121) presses on the transparent sealing shell (11) to make it closely fit with the top cover (3).

9. The electromagnetic switch with an indicator light according to claim 1, characterized in that: Second ridges (112) are provided on the circumferential side of the mating surface of the transparent sealing shell (11) with the gland (12).

10. A kind of electromagnetic switch with an indicator light according to claim 1, characterized in that: A soft pad (13) is sleeved on the circumferential side of the bottom shell (1) below the top cover (3).

Images