Reed of switching device, manufacturing method of reed and switching device

Abstract

The invention provides a reed of a switching device, a manufacturing method of the reed and the switching device, the reed comprises a sheet-shaped reed body part, one side of the reed body part is provided with a fixing part of a bent folding layer structure, an external laminated layer is provided with an external mounting hole, an internal laminated layer is provided with an internal mounting hole, and the internal laminated layer is provided with an internal mounting hole. The diameter of the external mounting hole is larger than that of the internal mounting hole, so that at least part of the head protrusion of the connecting piece is contained in the external mounting hole, the occupied space of the head protrusion of the connecting piece can be reduced, the space utilization of a product is maximized, and miniaturization of the product is facilitated. And meanwhile, more reliable positioning of the reed can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of switch electrical appliances, and in particular to a reed of a switch electrical appliance and a manufacturing method thereof. Background Art

[0002] Relays are automatic switching components with isolation functions. They are widely used in communications, automobiles, automatic control, household appliances and other fields. They are one of the most important control components.

[0003] Relays are mechanical action components that convert electrical energy into mechanical energy to achieve a step change in output. The two ends of the switching circuit are the static spring part and the dynamic spring part. The static spring part is composed of a static spring and a static contact, and the dynamic spring part is composed of a dynamic spring sheet and a dynamic contact. The dynamic spring sheet moves under the drive of electromagnetic force until the dynamic and static contacts come into contact to conduct the external circuit. The dynamic spring requires a thinner material to ensure the action performance. The main part can ensure the current carrying capacity by increasing the width, but the lead pin of the dynamic spring is narrow. To ensure that the lead pin has sufficient current carrying performance, there are usually two ways to achieve it: one is to connect the lead pin and the dynamic spring sheet through another lead-out terminal. This method has the risk of failure of the connection between the lead-out terminal and the dynamic spring sheet; the second is an integrated structure, which increases the thickness of the lead pin by folding multiple layers. Since the dynamic spring of this type of structure needs to be connected to the yoke iron, it is necessary to set a rivet hole on the dynamic spring lead pin. If the riveting hole is punched together with multiple layers of laminated sheets, there is a disadvantage that waste materials such as punching burrs are easily accumulated in the gaps between the laminated sheets. Since the dynamic spring needs to move back and forth inside, the positioning reliability of the dynamic spring is particularly important. If the burrs in the riveting hole fall out due to movement, it may affect the voltage resistance performance of the relay. In addition, waste materials such as punching burrs may also be brought out during the assembly process and contaminate the device, which will affect the reliability of the device and may cause product failure.

[0004] In addition, with the gradual development of relays, product miniaturization is also a commonly pursued goal, and the internal space of the product is also extremely precious. The existing dynamic spring component has the defect of protruding rivet buds, so it is necessary to set up space inside the product for the protruding part of the rivet bud, resulting in the miniaturization degree of the product not being high enough. Summary of the invention

[0005] Therefore, in view of at least one of the above problems, the present invention provides a reed of a switch device, a manufacturing method thereof, and a switch device.

[0006] The present invention is implemented by the following scheme:

[0007] The present invention proposes a reed of a switch electrical appliance, wherein the reed comprises a sheet-shaped reed body, one side of the reed body is provided with a fixing portion of a bent folded layer structure, each layer of the fixing portion of the bent folded layer structure is provided with a coaxially arranged mounting hole, and the mounting hole is used to penetrate a connecting piece, so as to fix the reed to a mounting structure; the fixing portion of the bent folded layer structure comprises at least one external laminate away from the mounting structure, and at least one internal laminate close to the mounting structure, characterized in that the external laminate is provided with an external mounting hole, the internal laminate is provided with an internal mounting hole, and the diameter of the external mounting hole is greater than the diameter of the internal mounting hole.

[0008] In one embodiment, the connecting member has a head with an increased diameter, and the diameter of the external mounting hole is suitable for at least partially accommodating the head of the connecting member.

[0009] In one embodiment, the connecting member is a rivet structure integrally formed with the mounting structure, or the connecting member is a separate rivet part.

[0010] In one embodiment, the fixed portion of the bent folded layer structure is at least three layers, and the outer laminate and the inner laminate are continuously folded in a "Z" shape.

[0011] In one embodiment, the fixed portion of the bent folded layer structure is three layers, including an outer laminate, a first inner laminate and a second inner laminate, and the outer laminate, the first inner laminate and the second inner laminate are folded in a "Z" shape.

[0012] In one embodiment, the fixing portion of the bent folded layer structure extends out of the reed body to form a reed lead pin.

[0013] In one embodiment, a step portion for installation and positioning is formed on the reed lead-out pin.

[0014] The present invention further provides a switch electrical appliance, characterized in that it comprises a spring leaf of the switch electrical appliance as described in any of the preceding items, as well as a connecting piece and a mounting structure; the spring leaf is fixedly connected to the mounting structure via the connecting piece.

[0015] In one embodiment, the reed is a movable reed.

[0016] The present invention also provides a method for manufacturing a reed of a switch electrical appliance, wherein the reed comprises a sheet-shaped reed body, one side of the reed body is provided with a fixing portion of a bent folded layer structure, the fixing portion of the bent folded layer structure comprises at least one outer laminate and at least one inner laminate, and the method comprises the following steps:

[0017] S1, providing a sheet-shaped substrate, and forming a flattened outer contour of a spring body and a fixing portion of a bent folded layer structure on the sheet-shaped substrate;

[0018] S2, forming an external mounting hole on the flattened outer contour of the fixing portion of the bent folded layer structure corresponding to the position of the external laminate;

[0019] S3, bending the sheet substrate to form a continuous bent structure, pressing the continuous bent structure together to form a fixed portion of a multi-layer bent folded layer structure; the fixed portion of the multi-layer bent folded layer structure includes at least one outer laminate and at least one inner laminate;

[0020] S4, using the external mounting hole as a positioning reference, forming an internal mounting hole in the internal laminate; the diameter of the external mounting hole is larger than the diameter of the internal mounting hole.

[0021] In one embodiment, in step S3, the fixed portion of the bent layer structure has at least three layers, and the sheet substrate is bent to form a "Z"-shaped continuous bent structure.

[0022] In one embodiment, in step S1 , the flattened outer contour of the fixing portion formed on the provided sheet-like substrate extends beyond the flattened outer contour of the reed body, so that the fixing portion can be formed as a reed lead pin.

[0023] In one embodiment, in step S1, a step groove is formed on the flattened outer contour of the fixing portion formed on the provided sheet-like substrate, so that the fixing portion can be formed as a spring lead-out pin with a step portion.

[0024] The technical solution provided by the present invention has the following technical effects:

[0025] 1. The present invention provides a reed of a switch electrical appliance, the reed comprising a sheet-shaped reed body, one side of the reed body being provided with a fixing portion of a bent folded layer structure, an external laminate being provided with an external mounting hole, and an internal laminate being provided with an internal mounting hole, wherein the diameter of the external mounting hole is greater than the diameter of the internal mounting hole, so that a head convex bulge of a connector is at least partially accommodated in the external mounting hole, which can reduce the space occupied by the head convex bulge of the connector, thereby maximizing the space utilization of the product, and facilitating the miniaturization of the product; at the same time, it is conducive to achieving more reliable positioning of the reed.

[0026] 2. The present invention provides a method for manufacturing a reed of a relay, wherein before folding, a pre-punching hole is pre-punched in the external laminate to form an external mounting hole, and the pre-punching hole has the largest size. Then the laminate is stacked, and then the other internal laminates are punched through the pre-punched hole, i.e., the position of the external mounting hole, to form the same smaller aperture in the other internal laminates to form the internal mounting hole, which can reduce the burr residue during punching; especially when the reed is a dynamic reed, it can reduce the burr falling out of the riveting hole due to the movement of the dynamic reed, thereby improving the pressure resistance performance of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional diagram of a connection structure of a relay according to a specific embodiment of the present invention;

[0028] Figure 2 is a three-dimensional diagram of the reed of this embodiment;

[0029] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 yes Figure 2 Enlarged view of point B in the middle;

[0031] Figure 5 is an unfolded view of the bent and folded layer structure of the spring leaf of this embodiment;

[0032] Figure 6 is a structural schematic diagram of the sheet substrate being folded in a "Z" shape in step S3 of the method for manufacturing the reed of the relay of the embodiment;

[0033] Figure 7 It is a schematic diagram of pressing the "Z"-shaped bent structures together to form a multi-layer bent layer structure in step S3 of the manufacturing method of the reed of the relay of this embodiment. DETAILED DESCRIPTION

[0034] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0035] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0036] Example 1

[0037] Reference Figure 1-7As shown, this embodiment provides a connection structure 1 of a relay, including a reed 10 , a yoke 20 , a reed lead pin 30 , a rivet 40 and an armature 50 .

[0038] The reed 10 includes a sheet-shaped reed body 101, and a fixing portion 11 of a bent folded layer structure is provided on one side of the reed body 101. Each layer of the fixing portion 11 of the bent folded layer structure is provided with a coaxially arranged mounting hole 12. The mounting hole 12 is used to penetrate a connecting member 40, such as a rivet 40, so as to fix the reed 10 to one side of the yoke 20. However, it is not limited to this. In some other embodiments, the reed 10 can be fixedly connected to one side of a mounting structure by a rivet 40, for example, connected to one side of a mounting base. In this embodiment, the rivet 40 is a rivet structure integrally formed with the mounting structure. For example, the rivet 40 can be a rivet structure integrally formed with the yoke 20. Alternatively, in some other embodiments, the rivet 40 can be a separate rivet part. In this embodiment, the reed 10 is a moving reed.

[0039] In this embodiment, the fixing portion 11 of the bent folded layer structure extends and protrudes from the reed body 101, thereby forming a reed lead pin 30, so that the reed 10 and the reed lead pin 30 are an integrated structure, which is more streamlined, more convenient to process, and lower in cost. Furthermore, a step portion 31 for installation and positioning is formed on the reed lead pin 30, which is conducive to the installation and positioning of the reed lead pin 30 and the reed 10.

[0040] The fixing portion 11 of the bent layer structure includes at least one outer laminate 111 away from the yoke 20 and at least one inner laminate 112 , 113 close to the yoke 20 .

[0041] Preferably, the fixed portion 11 of the bent folded layer structure has at least three layers, and the outer laminate 111 and the inner laminate are folded continuously in a "Z" shape, which is simple to process and convenient to manufacture.

[0042] In this embodiment, the fixed part 11 of the bent folded layer structure is three-layered, and the fixed part 11 of the bent folded layer structure is provided with two internal laminates, namely the first internal laminate 112 and the second internal laminate 113. The external laminate 111, the first internal laminate 112 and the second internal laminate 113 of the fixed part 11 of the bent folded layer structure are folded in a "Z" shape, which is convenient for processing and manufacturing.

[0043] In this embodiment, the mounting hole 12 passes through the outer laminate 111, the first inner laminate 112 and the second inner laminate 113. The outer laminate 111 is provided with an outer mounting hole 121, and the first inner laminate 112 and the second inner laminate 113 are provided with inner mounting holes 122 of the same diameter, and the diameter of the outer mounting hole 121 is greater than the diameter of the inner mounting hole 122. The connector 40 has a head with an increased diameter. In this embodiment, the rivet 40 has a rivet head convex bulge, so that the rivet head convex bulge of the rivet 40 is at least partially accommodated in the outer mounting hole 121, which can reduce the space occupied by the rivet 40, thereby maximizing the space utilization of the product, which is conducive to the miniaturization of the product; at the same time, it is conducive to achieving more reliable positioning of the reed 10.

[0044] In some other embodiments, the fixing portion 11 of the bent folded layer structure has four layers, including a first outer laminate, a second outer laminate, a first inner laminate, and a second inner laminate. The first outer laminate and the second outer laminate are provided with outer mounting holes of the same diameter, the first inner laminate and the second inner laminate are provided with inner mounting holes of the same diameter, and the diameter of the outer mounting hole is greater than the diameter of the inner mounting hole, which is also a technical solution that can be implemented.

[0045] In some other embodiments, the fixing part of the bent folded layer structure is three layers, including an outer laminate, a first inner laminate and a second inner laminate. The outer laminate is provided with an outer mounting hole, the first inner laminate is provided with a first inner mounting hole, the second inner laminate is provided with a second inner mounting hole, the diameter of the outer mounting hole is larger than the first inner mounting hole, and the diameter of the first inner mounting hole is larger than the second inner mounting hole; combined with a special stepped rivet, it is also conducive to achieving more reliable positioning of the spring 10.

[0046] In this embodiment, when the above-mentioned structure is manufactured, before folding, the external laminate 111 can be pre-punched to form an external mounting hole 121, and the pre-punched hole has the largest size. Then the lamination is performed, and then the other internal laminates are punched through the pre-punched hole, that is, the position of the external mounting hole 121, to form the same smaller aperture in the other internal laminates to form the internal mounting hole 122; since fewer layers need to be punched at the same time, the burrs remaining during punching can be reduced. In particular, in this embodiment, the reed 10 is a moving reed. Since the moving reed needs to move back and forth inside, the above structure and its manufacturing method can reduce the burrs falling out of the riveting hole due to movement, and improve the voltage resistance performance of the relay. Of course, as can be expected by those skilled in the art, in some other embodiments, the reed 10 is a static reed, which is also a technical solution that can be implemented.

[0047] Although in this embodiment, the connection structure 1 in the relay is taken as an example for description; as can be expected by those skilled in the art, the connection structure can be applied to other switching electrical appliances, such as contactors, etc.

[0048] Example 2

[0049] Reference Figure 1-7 This embodiment provides a method for manufacturing a reed of a relay, and the reed of the relay may be the reed 10 of the relay of the above-mentioned embodiment 1. The method for manufacturing the reed of the relay comprises the following steps:

[0050] S1, providing a sheet-shaped substrate, and forming a flattened outer contour of the spring body portion 101 and the fixing portion 11 of the bent folded layer structure on the sheet-shaped substrate, for example, by punching or laser cutting;

[0051] S2, forming an external mounting hole 121 at a position corresponding to the external laminate 111 on the flattened outer contour of the fixing portion 11 of the bent folded layer structure; for example, by punching or laser cutting;

[0052] S3, bending the sheet substrate to form a continuous bent structure, such as Figure 6 , pressing the continuous bent-like structures together to form a fixed portion of a multi-layer bent-folded layer structure; the fixed portion of the multi-layer bent-folded layer structure includes at least one inner laminate and at least one inner laminate;

[0053] The fixing portion of the multi-layer bent folded layer structure may be, for example, two layers, or more than two layers. Preferably, the fixing portion of the bent folded layer structure is at least three layers, so that the fixing portion 11 of the bent folded layer structure is bent to form a "Z"-shaped continuous bent structure; in this embodiment, the fixing portion of the bent folded layer structure is three layers, and the Z"-shaped continuous bent structure is pressed together to form a three-layer fixed portion of the bent folded layer structure, including an outer laminate 111, a first inner laminate 112, and a second inner laminate 113.

[0054] S4, using the external mounting hole 121 as a positioning reference, an internal mounting hole 112 with the same diameter as the internal mounting hole 112 is formed in the internal stack; the diameter of the external mounting hole 121 is larger than the diameter of the internal mounting hole 112.

[0055] The manufacturing method can reduce the residual burrs during punching, thereby reducing the burrs falling out of the riveting hole due to movement, and improving the voltage resistance performance of the relay.

[0056] In this embodiment, in step S1, the flattened outer contour of the fixing portion 11 formed on the provided sheet substrate extends out of the flattened outer contour of the reed body portion 101, so that the fixing portion 11 can be formed into a reed lead-out pin 30. The above method can also be a method for manufacturing the reed lead-out pin 30, so that the reed 10 and the reed lead-out pin 30 are an integrated structure, the structure is more streamlined, the processing is more convenient, and the cost is lower.

[0057] In step S1, a step groove 115 is also formed on the flattened outer contour of the fixing portion 11 formed on the provided sheet substrate, so that the fixing portion 11 can be formed into a reed lead-out pin 30 with a step portion 31 for installation and positioning, which is beneficial to the installation and positioning of the reed lead-out pin 30 and the reed 10.

[0058] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A reed of a switch electrical appliance, the reed comprising a sheet-shaped reed body, one side of the reed body being provided with a fixing portion of a bent folded layer structure, each layer of the fixing portion of the bent folded layer structure being provided with a coaxially arranged mounting hole, the mounting hole being used to penetrate a connecting member, so as to fix the reed to a mounting structure; the fixing portion of the bent folded layer structure comprising at least one outer laminated layer away from the mounting structure, and at least one inner laminated layer close to the mounting structure, characterized in that: The outer stack is provided with an outer mounting hole, and the inner stack is provided with an inner mounting hole, wherein the diameter of the outer mounting hole is greater than the diameter of the inner mounting hole.

2. The reed of the switch device according to claim 1, characterized in that: The connector has a head with an increased diameter, and the diameter of the external mounting hole is suitable for at least partially accommodating the head of the connector.

3. The reed of the switch device according to claim 1, characterized in that: The connecting piece is a rivet structure integrally formed with the mounting structure, or the connecting piece is a separate rivet part.

4. The reed of the switch device according to claim 1, characterized in that: The fixed part of the bent folded layer structure is at least three layers, and the outer laminate and the inner laminate are continuously folded in a "Z" shape.

5. The reed of the switch device according to claim 4, characterized in that: The fixed part of the bent folded layer structure is composed of three layers, including an outer laminate, a first inner laminate and a second inner laminate. The outer laminate, the first inner laminate and the second inner laminate are folded in a "Z" shape.

6. The reed of the switch device according to claim 1, characterized in that: The fixing portion of the bent folded layer structure extends and protrudes from the reed body portion, thereby forming a reed lead pin.

7. The reed of the switch device according to claim 6, characterized in that: A step portion for installation and positioning is formed on the reed lead-out pin.

8. A switch electrical appliance, characterized in that: It comprises a spring sheet of a switch electrical appliance as claimed in any one of claims 1 to 7, as well as a connecting piece and a mounting structure; the spring sheet is fixedly connected to the mounting structure via the connecting piece.

9. The switch device according to claim 8, characterized in that: The reed is a moving reed.

10. A method for manufacturing a reed of a switch electrical appliance, wherein the reed comprises a sheet-shaped reed body, one side of the reed body is provided with a fixing portion of a bent folded layer structure, the fixing portion of the bent folded layer structure comprises at least one outer laminate and at least one inner laminate, characterized in that: The steps include: S1, providing a sheet-shaped substrate, and forming a flattened outer contour of a spring body and a fixing portion of a bent folded layer structure on the sheet-shaped substrate; S2, forming an external mounting hole on the flattened outer contour of the fixing portion of the bent folded layer structure at a position corresponding to the external laminate; S3, bending the sheet substrate to form a continuous bent structure, pressing the continuous bent structure together to form a fixed portion of a multi-layer bent folded layer structure; the fixed portion of the multi-layer bent folded layer structure includes at least one outer laminate and at least one inner laminate; S4, using the external mounting hole as a positioning reference, forming an internal mounting hole in the internal laminate; the diameter of the external mounting hole is larger than the diameter of the internal mounting hole.

11. The method for manufacturing a reed of a switch device according to claim 10, characterized in that: In the step S3, the fixed portion of the bent layer structure has at least three layers, and the sheet substrate is bent to form a "Z"-shaped continuous bent structure.

12. The method for manufacturing a reed of a switch device according to claim 10, characterized in that: In step S1 , the flattened outer contour of the fixing portion formed on the provided sheet-like substrate extends beyond the flattened outer contour of the reed body, so that the fixing portion can be formed as a reed lead pin.

13. The method for manufacturing a reed of a switch device according to claim 12, characterized in that: In step S1 , a step groove is formed on the flattened outer contour of the fixing portion formed on the provided sheet-like substrate, so that the fixing portion can be formed into a spring lead-out pin with a step portion.

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