An apparatus for hingeing a relay core

Abstract

The present application relates to the technical field of iron core riveting equipment in relay, and discloses a device for riveting the iron core of a relay, which comprises a connecting body, a movable shaft core movably sleeved in the middle part of the inner cavity of the connecting body, a return spring transmissionally connected between the top end of the movable shaft core and the bottom end of the connecting body, a control module fixedly sleeved in the middle part of the outer surface of the connecting body and communicated with the middle part of the inner cavity of the connecting body, and a stamping member fixedly installed at the bottom end of the movable shaft core and extending to the bottom of the connecting body. The device for riveting the iron core of a relay is provided with the control module and the structure thereon, and the reverse force of the riveting punch in downward extrusion and cutting of the top end of the iron core can make the control module move correspondingly, and the direction of the magnetic field generated by the electromagnetic coil can be changed in a specific time period to apply the impact power of downward movement to the riveting punch, so that the petal-shaped structure of the top end of the iron core is flattened.

Description

Technical Field

[0001] This invention relates to the technical field of iron core riveting equipment in relays, specifically to a device for hinged iron cores in relays. Background Technology

[0002] As an electronic control component that uses a small current to control a large current, relays are widely used in various automated control circuits, where they play roles such as automatic adjustment, safety protection, and circuit switching, thus becoming an important control component in mechatronics.

[0003] The iron core, spool, and coil are important components of a relay. During manufacturing, the coil is riveted to the spool using the iron core, forming an integral structure with high consistency. This fully utilizes the magnetic energy generated by the coil to increase the magnetic attraction of the iron core, thereby giving the relay high sensitivity and good stability during operation.

[0004] However, during the riveting process of the iron core, spool, and coil, the iron core is subjected to a large axial pressure. Furthermore, because the iron core in the relay is relatively small, it is prone to bending and deformation when subjected to a large axial impact. This not only affects its coaxiality but also causes squeezing damage to the surrounding coil. This increases the scrap rate of the relay during manufacturing and greatly affects the stability and reliability of the relay in subsequent use.

[0005] Therefore, there is an urgent need for a stranding device for relay cores to solve the defects existing in the stranding process of the aforementioned cores. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] This invention provides a device for hinged relay cores, which effectively prevents bending deformation during the core stamping and hinged process, maintains high coaxiality without compressing the coil, effectively reduces the scrap rate of the relay during manufacturing, and enhances its stability and reliability in subsequent use. It solves the problem that during the riveting process of the core, chuck, and coil, the core experiences significant axial pressure, and because the core size in the relay is relatively small, it is prone to deformation under high axial impact. This not only affects its coaxiality but also causes compression damage to the surrounding coil, increasing the scrap rate during manufacturing and significantly impacting the relay's stability and reliability in subsequent use.

[0008] (II) Technical Solution

[0009] This invention provides the following technical solution: a device for hinged relay cores, comprising a connecting body, a fixed shaft fixedly sleeved at the top of the inner cavity of the connecting body, a movable shaft core movably sleeved at the middle of the inner cavity of the connecting body, and a return spring being driven between the top of the movable shaft core and the bottom of the connecting body, a control module communicating with the middle of its inner cavity being fixedly sleeved at the middle of the outer surface of the connecting body, a stamping member extending to the bottom of the connecting body being fixedly installed at the bottom of the movable shaft core, a riveting punch being movably engaged on the outer surface of the stamping member and at the bottom of the inner cavity of the connecting body, an electromagnetic coil being fixedly sleeved at the bottom of the outer surface of the connecting body and at a position opposite to the riveting punch, forming an electrical connection with the interior of the control module, the stamping member including a stamping head fixedly installed at the bottom of the movable shaft core, the bottom of the stamping head being a three-edged conical structure so that the top of the iron core can be squeezed and cut into a petal-shaped structure during stamping, and a limit groove is formed on the outer surface of the stamping head.

[0010] Preferably, a limiting slider is fixedly installed at the top of the riveting punch and forms a movable connection with the limiting groove on the punch head, and a permanent magnet bushing is fixedly sleeved on the top of the outer surface of the riveting punch.

[0011] Preferably, the cavity formed by the connector, the fixed shaft, and the movable shaft core is filled with hydraulic transmission fluid, and it is always in communication with the inner cavity of the control module.

[0012] Preferably, the control module has a set of annular grooves that are not connected front to back, and a set of annular sliders with 180° included at both ends are movably sleeved inside the annular grooves. The outer surface of the annular sliders is provided with a conductive carbon layer. The outer surface of the control module is provided with a set of first terminals, second terminals and third terminals arranged clockwise, and all of them are electrically connected to the inside of the electromagnetic coil.

[0013] Preferably, the first terminal and the second terminal are adjacent to each other so that the electrical connection between the first terminal and the second terminal can be maintained when the conductive carbon layer rotates within a certain range. At the same time, the angle between the first terminal and the third terminal in the clockwise direction is greater than the angle between the two ends of the conductive carbon layer, while the angle between the second terminal and the third terminal is smaller than the angle between the two ends of the conductive carbon layer.

[0014] Preferably, the second terminal is connected as the positive terminal, while the first and third terminals are connected as the negative terminals. When the first and second terminals are connected, the magnetic field poles generated by the electromagnetic coil are opposite to the magnetic poles of the permanent magnet bushing on the riveting punch. When the stamping component is connected to the third terminal, the magnetic field poles generated by the electromagnetic coil are the same as the magnetic poles of the permanent magnet bushing on the riveting punch.

[0015] (III) Beneficial Effects

[0016] The present invention has the following beneficial effects:

[0017] 1. This device for hinged relay cores, with its movable shaft, stamping components, and riveting punch, allows for the riveting and hinged connection of the relay core, spool, and coil. First, the stamping components are used to press and cut the top of the core into a petal-like structure. Then, the riveting punch is used to flatten it, achieving the riveting and hinged connection between the core and spool. Compared to existing technologies, this effectively reduces the axial impact force directly generated on the core during hinged connection, thus preventing bending deformation. Simultaneously, it maintains high coaxiality without compressing the coil, effectively reducing the scrap rate during manufacturing and ensuring high stability and reliability in subsequent use.

[0018] 2. The device for hinged relay cores utilizes the reverse force of the riveting punch pressing and cutting the top of the core downwards to cause the control module to perform corresponding actions. Within a specific time period, the direction of the magnetic field generated by the electromagnetic coil is changed to apply downward impact force to the riveting punch, thereby flattening the petal-shaped structure at the top of the core. This results in high controllability of the riveting and hinged action between the core and the chuck. Furthermore, the simple mechanical structure control system gives the device high applicability and service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structural connection between the movable shaft and the stamping head of the present invention;

[0021] Figure 3 This is a schematic diagram of the riveting punch of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention in its normal state;

[0023] Figure 5 This is a schematic diagram of the circuit connection of the control module under normal conditions of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure of the present invention in its stamped state;

[0025] Figure 7 This is a schematic diagram of the circuit connection of the control module in the stamping state of the present invention.

[0026] In the diagram: 1. Connector; 2. Fixed shaft; 3. Movable shaft core; 4. Return spring; 5. Control module; 6. Stamping component; 7. Riveting punch; 8. Electromagnetic coil; 9. Stamping head; 10. Limiting groove; 11. Limiting slider; 12. Permanent magnet bushing; 13. Annular slider; 14. Conductive carbon layer; 15. First terminal; 16. Second terminal; 17. Third terminal. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1 A device for hinged relay cores includes a connecting body 1. A fixed shaft 2 is fixedly sleeved on the top of the inner cavity of the connecting body 1 to fix it on a stamping device. A movable shaft core 3 is movably sleeved in the middle of the inner cavity of the connecting body 1. A return spring 4 is connected between the top of the movable shaft core 3 and the bottom of the connecting body 1. The return spring 4 is a constant pressure spring to ensure its stability during operation. A control module 5, which communicates with the middle of the inner cavity, is fixedly sleeved on the middle of the outer surface of the connecting body 1. A stamping member 6, which extends to the bottom of the connecting body 1, is fixedly installed at the bottom of the movable shaft core 3. The stamping member 6 is made of a non-magnetic and high-hardness material. A riveting punch 7 is movably snapped onto the outer surface of the stamping member 6 at the bottom of the inner cavity of the connecting body 1. An electromagnetic coil 8, which forms an electrical connection with the inside of the control module 5, is fixedly sleeved at the bottom of the outer surface of the connecting body 1 at a position opposite to the riveting punch 7.

[0029] like Figure 2 As shown, in this technical solution, the stamping component 6 includes a stamping head 9 fixedly installed at the bottom of the movable shaft core 3. The bottom end of the stamping head 9 is set as a three-edged conical structure so that the top of the iron core can be squeezed and cut into a petal-shaped structure during stamping. A limiting slide groove 10 arranged in a ring array is provided on the outer surface of the stamping head 9.

[0030] like Figure 3 As shown, in this technical solution, the top of the riveting punch 7 is fixedly installed with a limiting slider 11, which forms a movable connection with the limiting slide groove 10 on the punch head 9, thereby effectively limiting the range of vertical movement of the riveting punch 7 and preventing it from falling off when the electromagnetic coil 8 is not energized. The top of the outer surface of the riveting punch 7 is fixedly sleeved with a permanent magnet bushing 12, which can generate a large downward impact force when its magnetic pole is the same as the magnetic field pole generated by the electromagnetic coil 8.

[0031] In this technical solution, the cavity formed by the connecting body 1, the fixed shaft 2, and the movable shaft core 3 is filled with a full volume of hydraulic transmission fluid. At the same time, it is always in communication with the inner cavity of the control module 5, and the return spring 4 on it is in a stretched state due to the gravity of the movable shaft core 3 in the initial state.

[0032] like Figures 6-7 As shown, in this technical solution, the control module 5 has a set of annular grooves that are not connected front to back and one end is connected to the cavity formed in the connector 1. A set of annular sliders 13 with their two ends at an angle of 180° are movably sleeved inside the annular grooves. The outer surface of the annular sliders 13 is provided with a conductive carbon layer 14. The outer surface of the control module 5 is provided with a set of first terminals 15, second terminals 16 and third terminals 17 arranged clockwise, and all of them are electrically connected to the interior of the electromagnetic coil 8.

[0033] In this technical solution, the first terminal 15 and the second terminal 16 are adjacent to each other so that the electrical connection between the first terminal 15 and the second terminal 16 can be maintained when the conductive carbon layer 14 rotates within a certain range. At the same time, the angle between the first terminal 15 and the third terminal 17 in the clockwise direction is greater than the angle between the two ends of the conductive carbon layer 14, while the angle between the second terminal 16 and the third terminal 17 is smaller than the angle between the two ends of the conductive carbon layer 14. This way, after the conductive carbon layer 14 rotates to a certain angle, the first terminal 15 and the second terminal 16 are disconnected, while the first terminal 15 and the third terminal 17 are connected.

[0034] In this technical solution, the second terminal 16 is set as the positive connection, while the first terminal 15 and the third terminal 17 are set as the negative connection. When the first terminal 15 and the second terminal 16 are connected, the magnetic field pole generated by the electromagnetic coil 8 is opposite to the magnetic field pole of the permanent magnet sleeve 12 on the riveting punch 7, so as to force the riveting punch 7 to be held at the corresponding position height. When the stamping component 6 is connected to the third terminal 17, the magnetic field pole generated by the electromagnetic coil 8 is the same as the magnetic field pole of the permanent magnet sleeve 12 on the riveting punch 7, so as to apply a downward impact force to the riveting punch 7, thereby flattening the petal-shaped mechanism at the top of the iron core, thereby realizing the riveting operation of the iron core and the chuck.

[0035] The usage method and working principle of this embodiment are as follows:

[0036] First, the connecting body 1 and its structure are fixedly installed on the stamping equipment by fixing the shaft 2, and the iron core, yoke and coil are arranged in specific positions;

[0037] like Figure 5As shown, in the initial state, the first terminal 15 and the second terminal 16 are connected under the action of the conductive carbon layer 14, causing the magnetic poles of the magnetic field generated on the electromagnetic coil 8 to be opposite to the magnetic poles of the permanent magnet bushing 12 on the riveting punch 7, so that the riveting punch 7 is attracted to the top. When the stamping equipment is started and the connecting body 1 and its structure are moved downward, the bottom end of the stamping head 9 will first contact the top end of the iron core. During the continuous pressure process, the top end of the iron core is gradually squeezed into a petal-shaped structure. During the continuous squeezing process, the riveting punch 7 is subjected to the reverse force and compresses the return spring 4 upward, and squeezes the hydraulic transmission fluid filled in its chamber into the inner cavity of the control module 5, thereby driving the annular slider 13 on it to rotate clockwise along the trajectory. Within a specific rotation angle, the first terminal 15 and the second terminal 16 are always in an electrically connected state.

[0038] like Figure 6 As shown, when the annular slider 13 on the control module 5 rotates clockwise to a certain angle, the first terminal 15 and the second terminal 16 are disconnected, while the second terminal 16 and the third terminal 17 are connected. This causes the current flowing through the electromagnetic coil 8 to be opposite and generate opposite magnetic fields, so that the riveting punch 7 is subjected to opposite magnetic field force and impacts downward to flatten the petal-shaped structure at the top of the iron core, thereby realizing the riveting and twisting operation of the iron core and the chuck.

[0039] Then, the stamping equipment is started in reverse and the connecting body 1 and its structure are moved upward. As the stamping head 9 gradually separates from the top of the iron core, the return spring 4 and its movable shaft 3 gradually return to their initial state. At the same time, under the action of negative pressure, the annular slider 13 is driven to rotate in reverse along a specific trajectory, causing the second terminal 16 and the third terminal 17 to disconnect from each other, while the second terminal 16 and the third terminal 17 are connected. Then, under the action of magnetic attraction, the riveting punch 7 is driven to return to its initial position, so as to perform riveting and twisting operations on the next group of iron cores, yokes and coils.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for hinge of relay core, comprising a connecting body (1), the top of the inner cavity of the connecting body (1) is sleeved with a fixed shaft (2), characterized in that: A movable shaft core (3) is movably sleeved in the middle of the inner cavity of the connecting body (1), and a return spring (4) is connected between the top of the movable shaft core (3) and the bottom of the connecting body (1). A control module (5) connected to the middle of the inner cavity of the connecting body (1) is fixedly sleeved in the middle of the outer surface of the connecting body (1). A stamping member (6) extending to the bottom of the connecting body (1) is fixedly installed at the bottom of the movable shaft core (3). A riveting punch (7) is movably snapped onto the outer surface of the stamping member (6) and located at the bottom of the inner cavity of the connecting body (1). An electromagnetic coil (8) that forms an electrical connection with the inside of the control module (5) is fixedly sleeved at the bottom of the outer surface of the connecting body (1) and located at the relative position of the riveting punch (7). The stamping component (6) includes a stamping head (9) fixedly installed at the bottom of the movable shaft core (3). The bottom of the stamping head (9) is set as a three-edged conical structure so that the top of the iron core can be squeezed and cut into a petal structure during stamping. A limit groove (10) is opened on the outer surface of the stamping head (9). The top of the riveting punch (7) is fixedly installed with a limiting slider (11) and forms a movable connection with the limiting groove (10) on the punch head (9). A permanent magnet bushing (12) is fixedly sleeved on the top of the outer surface of the riveting punch (7). The cavity formed by the connector (1), the fixed shaft (2) and the movable shaft core (3) is filled with hydraulic transmission fluid, and at the same time, it is always in communication with the inner cavity of the control module (5). The control module (5) has a set of annular grooves that are not connected front to back inside, and a set of annular sliders (13) with 180° angle between the two ends are movably sleeved inside the annular grooves. The outer surface of the annular sliders (13) is provided with a conductive carbon layer (14). The outer surface of the control module (5) is provided with a set of first terminals (15), second terminals (16) and third terminals (17) arranged in a clockwise direction, and they are all electrically connected to the inside of the electromagnetic coil (8).

2. An apparatus for hinging a relay core according to claim 1, characterized in that: The first terminal (15) and the second terminal (16) are adjacent to each other so that when the conductive carbon layer (14) rotates within a certain range, the electrical connection between the first terminal (15) and the second terminal (16) can be maintained. At the same time, the angle between the first terminal (15) and the third terminal (17) in the clockwise direction is greater than the angle between the two ends of the conductive carbon layer (14), while the angle between the second terminal (16) and the third terminal (17) is smaller than the angle between the two ends of the conductive carbon layer (14).

3. An apparatus for hinging a relay core according to claim 2, characterized in that: The second terminal (16) is set to positive connection, while the first terminal (15) and the third terminal (17) are set to negative connection. When the first terminal (15) and the second terminal (16) are connected, the magnetic pole of the magnetic field generated by the electromagnetic coil (8) is opposite to the magnetic pole of the permanent magnet bushing (12) on the riveting punch (7). When the stamping component (6) is connected to the third terminal (17), the magnetic pole of the magnetic field generated by the electromagnetic coil (8) is the same as the magnetic pole of the permanent magnet bushing (12) on the riveting punch (7).

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