SLA-50A high-power relay

Abstract

The utility model discloses an SLA-50A high-power relay, and relates to the technical field of relays, the SLA-50A high-power relay comprises a skeleton and an electromagnetic coil arranged on the skeleton, the skeleton is provided with a terminal pin in an extending manner, one side of the skeleton is provided with a yoke, one end of the yoke is provided with an armature, one side of the yoke far away from the armature is bent along the side wall of the skeleton, and the side wall of the skeleton is provided with an electromagnetic coil. A movable contact spring is arranged on one side, far away from the framework, of the armature, one end, far away from the armature, of the movable contact spring is bent and connected with the yoke, a COM pin is arranged on one side, far away from the framework, of the yoke, and a PCB end is arranged on one side, extending towards the terminal pin, of the COM pin. The COM pin is arranged on one side, far away from the framework, of the yoke, the COM pin extends towards one side of the terminal pin on the framework to form the PCB end to replace the terminal pin arranged on the yoke, current on the relay is conducted by the PCB end, and resistance heat generated by the integrally formed terminal pin of the original yoke is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of relays, in particular to a SLA-50A high-power relay. BACKGROUND

[0002] A relay is an electronic control device, which has a control system and a controlled system, and is usually applied to an automatic control circuit. The relay is actually a kind of “automatic switch” for controlling a larger current with a smaller current, and plays a role in automatic adjustment, safety protection and circuit conversion in the circuit.

[0003] The relay generally comprises a core, a coil, a moving spring piece, an armature, a yoke and normally open and closed contact pieces. When the coil passes through an electric current, an electromagnetic force is generated, the armature is attracted, so that the moving contact of the moving spring part is separated from the normally closed contact piece, and the moving contact is driven to contact the normally open contact piece; conversely, when the electric current in the coil disappears, the electromagnetic force disappears, the armature is reset, so that the moving contact of the moving spring part is separated from the normally open contact piece and contacts the normally closed contact piece, and the process is repeated to achieve the purpose of turning on or turning off the circuit of the external load.

[0004] According to the related technology in the above, the inventor believes that when the relay works, the resistance heat generated by the lead wire pin integrally formed on the yoke is relatively large, which can damage the relay. CONTENT OF THE UTILITY MODEL

[0005] The application aims to provide a SLA-50A high-power relay to solve the problem that the resistance heat generated by the lead wire pin integrally formed on the original yoke is relatively large when the relay works.

[0006] The SLA-50A high-power relay provided by the application adopts the following technical scheme:

[0007] The SLA-50A high-power relay comprises a framework and an electromagnetic coil arranged on the framework, the framework is provided with a lead wire pin, one side of the framework is provided with a yoke, one end of the yoke is provided with an armature, the side of the yoke away from the armature is bent along the side wall of the framework, the side of the armature away from the framework is provided with a moving spring piece, the end of the moving spring piece away from the armature is bent and connected with the yoke, the side of the yoke away from the framework is provided with a COM pin, and the COM pin is provided with a PCB end extending to one side of the lead wire pin.

[0008] By adopting the above technical scheme, the COM pin is arranged on the side of the yoke away from the framework, the PCB end extending to one side of the lead wire pin on the framework is arranged on the COM pin instead of the lead wire pin arranged on the yoke, the current on the relay is conducted by the PCB end, and the resistance heat generated by the lead wire pin integrally formed on the original yoke is reduced.

[0009] Optionally, the COM pin is provided with a flexible conductive strip away from one side of the yoke, the flexible conductive strip is arranged to be bent towards the armature and connected with the moving spring piece.

[0010] By adopting the above technical scheme, the flexible conductive strip is arranged on the COM pin, the flexible conductive strip is bent and connected with the moving spring piece of the armature side wall, the current path is widened by the flexible conductive strip, and the conduction capacity of the current is improved.

[0011] Optionally, the yoke side wall is provided with a riveting point one riveted and linked with one end of the moving spring piece, and the armature side wall is provided with a riveting point two riveted and linked with the other end of the moving spring piece.

[0012] By adopting the above technical scheme, the moving spring piece of the yoke side wall is riveted with the riveting point one, and the moving spring piece of the armature side wall is riveted and connected with the riveting point two, so that the possibility of causing poor contact and causing the relay to malfunction due to loosening of the connection between the moving spring piece and the armature and the yoke when the current passes through is reduced.

[0013] Optionally, the moving spring piece is provided with a fixing piece away from one side of the armature, and the fixing piece is arranged to extend at both ends and be fitted with one end of the flexible conductive strip away from the yoke.

[0014] By adopting the above technical scheme, the fixing piece is arranged to extend at both ends and be fitted with one end of the flexible conductive strip away from the yoke, the contact area of the fixing piece and the flexible conductive strip is increased, and the possibility of causing the flexible conductive strip and the moving spring piece to be fused when a large current passes through the flexible conductive strip and the moving spring piece is directly connected is reduced.

[0015] Optionally, the fixing piece is arranged to be bent at both ends and wrap and fix one side of the flexible conductive strip away from the armature.

[0016] By adopting the above technical scheme, the fixing piece is arranged to be bent at both ends and wrap and fix one side of the flexible conductive strip, the contact area of the fixing piece and the flexible conductive strip is further increased, one side of the flexible conductive strip is fixed, and the possibility of causing the relay to malfunction due to poor contact between the flexible conductive strip and the fixing piece when a large current passes through the flexible conductive strip is reduced.

[0017] Optionally, the fixing piece is provided with a connecting piece away from one side of the yoke, and the moving spring piece is provided with a moving contact riveted with the connecting piece away from the yoke.

[0018] By adopting the above technical scheme, the connecting piece on the fixing piece is riveted and connected with one end of the moving spring piece away from the yoke, the edge connection of the moving spring piece is more firm, and the edge of the moving spring piece is prevented from being loosened when the edge of the moving spring piece is directly spot-welded, so that the large current passing through causes the edge of the moving spring piece to heat and other faults are avoided.

[0019] Optionally, the COM pin is riveted and connected with the riveting point one, and the COM pin is arranged to be fitted with the moving spring piece.

[0020] By adopting the above technical solution, the COM pin is riveted to the riveting point one on the yoke, and the COM pin is closely attached to the moving reed, so that loosening between the COM pin, the moving reed and the yoke is reduced when large current passes through, thereby avoiding poor contact, and the possibility of heating or burning at the connection position is avoided.

[0021] Optionally, the flexible conductive strip is made of conductive metal wires.

[0022] By adopting the above technical solution, the flexible conductive strip is made of conductive metal wires, so that the flexible conductive strip has good heat dissipation performance and conductive performance.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. A COM pin is arranged on the side of the yoke away from the skeleton, and the COM pin replaces the lead pin arranged on the yoke to conduct current on the relay through the PCB end arranged on one side of the lead pin of the skeleton, so as to reduce the resistance heat generated by the original yoke integrated lead pin;

[0025] 2. A flexible conductive strip is arranged on the COM pin, the flexible conductive strip is bent to be connected to the moving reed of the armature side wall, the current path is widened by the flexible conductive strip, and the current conduction capacity is improved; one end of the flexible conductive strip is fixed by the fixed sheet bent at both ends to further increase the contact area of the fixed sheet and the flexible conductive strip, and to fix one end of the flexible conductive strip, so as to reduce the possibility of failure of the relay caused by poor contact between the flexible conductive strip and the fixed sheet when large current passes through the flexible conductive strip;

[0026] 3. The moving reed of the yoke side wall is riveted to the riveting point one, the moving reed of the armature side wall is riveted to the riveting point two, and the COM pin is riveted to the riveting point one on the yoke, so that the COM pin is closely attached to the moving reed, and loosening between the COM pin, the moving reed and the yoke is reduced when large current passes through, thereby avoiding poor contact, and the possibility of heating or burning at the connection position is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a whole schematic diagram of SLA-50A high-power relay.

[0028] In the figure, 1 is a skeleton, 11 is an electromagnetic coil, 12 is a lead pin, 13 is an A pin, 2 is a yoke, 21 is a riveting point one, 3 is an armature, 31 is a riveting point two, 4 is a moving reed, 41 is a fixed sheet, 42 is a connecting sheet, 43 is a moving contact, 5 is a COM pin, 51 is a PCB end, and 6 is a flexible conductive strip. DETAILED DESCRIPTION

[0029] The accompanying drawings, which are incorporated herein by reference Figure 1 The application will be described in further detail below.

[0030] The SLA-50A high-power relay, referring to Figure 1 , including the skeleton 1, in the skeleton 1 by enameled copper round wire winding into the electromagnetic coil 11, on the skeleton 1 installed for the lead pin 12, on the skeleton 1 installed good magnetic yoke 2, yoke 2 along the skeleton 1 side wall bending setting, in the yoke 2 one end with the armature 3 carding connection, in the yoke 2 side wall setting has a body forming riveting point 21, in the armature 3 side wall setting has a body forming riveting point 31, the one end of the moving spring piece 4 and the riveting point 21 on the yoke 2 riveting, moving spring piece 4 the other end of the bending setting and riveting point 31 on the armature 3, when the electromagnetic coil 11 power generation magnetic field, the armature 3 to the electromagnetic coil 11 rotation, driving moving spring piece 4 rotation, realize the on-off control of relay circuit.

[0031] Referring to Figure 1 , the COM pin 5 is installed on the side of the yoke 2 away from the skeleton 1, the COM pin 5 is made of metal or alloy with good conductivity, and the PCB end 51 is integrally formed on the side of the COM pin 5 close to the lead pin 12 of the skeleton 1, the PCB end 51 conducts the current on the relay, reducing the resistance heat generated by the PCB end 51 to the A pin 13 on the skeleton 1 after the relay works.

[0032] Referring to Figure 1 , the COM pin 5 is riveted to the riveting point 21 on the yoke 2, so that the COM pin 5 is closely attached to the moving spring piece 4, a convex horn (not shown in the figure) is integrally formed on the side of the COM pin 5 close to the yoke 2, the height of the convex horn is consistent with the thickness of the moving spring piece, the convex horn is attached to the yoke 2, ensuring that the side of the COM pin 5 is parallel to the side of the yoke 2, and ensuring that the position size of the COM pin 5 is standard, reducing the possibility of loosening between the COM pin 5, the moving spring piece 4 and the yoke 2 when large current passes through, which may cause poor contact and heating or burning at the connection position.

[0033] Referring to Figure 1 , the flexible conductive strip 6 is connected to the side of the COM pin 5 away from the yoke 2 by spot welding, the flexible conductive strip 6 is woven from metal wires with good conductivity, in this embodiment, the flexible conductive strip 6 is made of pure copper wire, which has good conductivity and heat dissipation; the fixed sheet 41 made of copper sheet is bent at both ends to wrap and connect one end of the flexible conductive strip 6, and the fixed sheet 41 and the flexible conductive strip 6 are spot welded to further increase the contact area of the fixed sheet 41 and the flexible conductive strip 6, and to fix one end of the flexible conductive strip 6, reducing the possibility of poor contact between the flexible conductive strip 6 and the fixed sheet 41 when large current passes through the flexible conductive strip 6, which may cause the relay to malfunction.

[0034] Referring to Figure 1 In the fixed sheet 41 far away from the yoke 2 side is provided with a one-piece connecting sheet 42, riveting connecting sheet 42 and the moving contact 43 of the moving spring sheet 4 far away from the yoke 2 side, make the edge of the moving spring sheet 4 connection more firm, try to avoid the edge of the moving spring sheet 4 directly when bending spot welding loose, make the large current through the edge of the moving spring sheet 4 appear heat failure, etc.

[0035] The implementation principle of the embodiment of the present application is:

[0036] In actual operation, after the yoke 2 and the armature 3 are installed on the skeleton 1 of the relay, the moving spring sheet 4 is connected with the yoke 2 and the armature 3 through riveting point one 21 and riveting point two 31, the COM pin 5 is attached to the moving spring sheet 4 through riveting point one 21, the current is conducted through the PCB end 51 on the COM pin 5 which is in the same direction as the lead pin 12, and the current on the relay is conducted; Then install the flexible conductive strip 6 on the fixed sheet 41 on the COM pin 5 and the armature 3, widen the current path by the flexible conductive strip 6, and improve the current conduction capacity. The PCB end 51 on the COM pin 5 replaces the original lead pin of the yoke, reducing the resistance heat generated by the original yoke integrally formed with the lead pin.

[0037] The embodiments of the present application are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, wherein the same parts are represented by the same reference numerals. Therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An SLA-50A high-power relay, comprising a frame (1) and an electromagnetic coil (11) disposed on the frame (1), wherein the frame (1) extends with lead pins (12), characterized in that: A yoke (2) is provided on one side of the frame (1), and an armature (3) is provided at one end of the yoke (2). The side of the yoke (2) away from the armature (3) is bent along the side wall of the frame (1). A movable spring (4) is provided on the side of the armature (3) away from the frame (1). The end of the movable spring (4) away from the armature (3) is bent and connected to the yoke (2). A COM pin (5) is provided on the side of the yoke (2) away from the frame (1). A PCB end (51) is provided on the side of the COM pin (5) extending toward the lead pin (12).

2. The SLA-50A high-power relay according to claim 1, characterized in that: A flexible conductive strip (6) is provided on the side of the COM foot (5) away from the yoke (2). The flexible conductive strip (6) is bent towards the armature (3) and connected to the moving spring (4).

3. The SLA-50A high-power relay according to claim 2, characterized in that: The yoke (2) has a rivet point 1 (21) on its side wall that is riveted to one end of the moving spring (4), and the armature (3) has a rivet point 2 (31) on its side wall that is riveted to the other end of the moving spring (4).

4. The SLA-50A high-power relay according to claim 3, characterized in that: The movable spring (4) is provided with a fixing piece (41) on the side away from the armature (3), and the two ends of the fixing piece (41) extend and fit against the end of the flexible conductive strip (6) away from the yoke (2).

5. The SLA-50A high-power relay according to claim 4, characterized in that: The fixing piece (41) is bent at both ends and wrapped and fixed to the side of the flexible conductive strip (6) away from the armature (3).

6. The SLA-50A high-power relay according to claim 5, characterized in that: The fixed plate (41) is provided with a connecting plate (42) on the side away from the yoke (2), and the movable spring plate (4) is provided with a movable contact (43) that is riveted to the connecting plate (42) at the end away from the yoke (2).

7. The SLA-50A high-power relay according to claim 3, characterized in that: The COM pin (5) is riveted to the riveting point (21), and the COM pin (5) is fitted to the moving spring (4).

8. The SLA-50A high-power relay according to claim 5, characterized in that: The flexible conductive strip (6) is made of woven conductive metal wires.

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