Reed of switching device and switching device

Abstract

The utility model provides a switch electric appliance reed and a switch electric appliance, the reed comprises a sheet-shaped reed body part, one side of the reed body part is provided with a fixing part with a bent folding layer structure, an external lamination layer is provided with an external mounting hole, an internal lamination layer is provided with an internal mounting hole, and the internal lamination 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] This utility model relates to the field of switch electrical technology, specifically to a spring in a switch electrical device. Background Technology

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

[0003] A relay is a mechanically actuated component that converts electrical energy into mechanical energy to achieve a step change in output. The switching circuit has two ends: a stationary spring section and a moving spring section. The stationary spring section consists of a stationary spring and a stationary contact, while the moving spring section consists of a moving spring plate and a moving contact. The moving spring plate moves under electromagnetic force until the moving and stationary contacts make contact, thus connecting the external circuit. To ensure operational performance, the moving spring requires a thinner material. The main body can be widened to ensure current-carrying capacity, but the leads of the moving spring are narrow. To ensure sufficient current-carrying capacity, there are generally two methods: one is to connect it to the moving spring plate through a separate lead, which carries the risk of connection failure; the second is an integrated structure, using multi-layer folding to increase the thickness of the leads. Because this type of device requires the moving spring to connect to a yoke, rivet holes need to be provided on the moving spring leads. If multiple layers of laminations are punched together for these rivet holes, there is a disadvantage that punching burrs and other waste material can easily accumulate in the gaps between the laminations. Since the moving spring needs to move back and forth inside, the positioning reliability of the moving spring is particularly important. If burrs in the riveting hole fall out due to movement, they may affect the relay's withstand voltage performance. Furthermore, waste materials such as punching burrs may be carried out during assembly and contaminate the device, affecting the device's reliability and potentially leading to product failure.

[0004] Furthermore, with the gradual development of relays, miniaturization is a common goal, and internal space is extremely precious. Existing moving spring components have the defect of protruding rivets, so it is necessary to set protruding rivet parts inside the product to make room, resulting in the product's miniaturization level not being high enough. Utility Model Content

[0005] Therefore, in response to at least one of the above problems, this utility model provides a reed of a switching device and a switching device.

[0006] This utility model is achieved using the following solution:

[0007] This utility model proposes a spring for a switching device. The spring includes a sheet-shaped spring body portion. One side of the spring body portion is provided with a fixing portion of a bent-fold layer structure. Each layer of the fixing portion of the bent-fold layer structure is provided with a coaxially arranged mounting hole. The mounting hole is used to pass through a connector, thereby fixing the spring to a mounting structure. The fixing portion of the bent-fold layer structure includes at least one outer layer away from the mounting structure and at least one inner layer close to the mounting structure. The outer layer is provided with an outer mounting hole, and the inner layer is provided with an inner mounting hole. The diameter of the outer mounting hole is larger than the diameter of the inner mounting hole.

[0008] In one embodiment, the connector has a head with an increased diameter, and the diameter of the external mounting hole is adapted to at least partially accommodate the head of the connector.

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

[0010] In one embodiment, the fixing part of the folded layer structure has at least three layers, and the outer and inner layers are arranged in a continuous "Z" shape.

[0011] In one embodiment, the fixing part of the folded layer structure has three layers, including an outer layer, a first inner layer, and a second inner layer, which are arranged in a "Z" shape.

[0012] In one embodiment, the fixing portion of the folded layer structure extends outward from the spring body portion, thereby forming a spring lead-out foot.

[0013] In one embodiment, the spring lead-out foot has a stepped portion for mounting and positioning.

[0014] This utility model also proposes a switching device, characterized in that it includes a spring as described in any of the preceding claims, as well as a connector and a mounting structure; the spring is fixedly connected to the mounting structure via the connector.

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

[0016] The technical solution provided by this utility model has the following technical effects:

[0017] This utility model provides a spring for a switching device. The spring includes a sheet-shaped spring body. One side of the spring body has a fixing part with a bent and folded layer structure. The outer layer has an external mounting hole, and the inner layer has an internal mounting hole. The diameter of the outer mounting hole is larger than the diameter of the inner mounting hole, so that the head protrusion of the connector is at least partially accommodated in the outer mounting hole. This reduces the space occupied by the head protrusion of the connector, thereby maximizing the use of product space and facilitating product miniaturization. At the same time, it helps to achieve more reliable spring positioning. Attached Figure Description

[0018] Figure 1 This is a perspective view of the connection structure of the relay according to a specific embodiment of this utility model;

[0019] Figure 2 This is a perspective view of the reed in this embodiment;

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 yes Figure 2 Enlarged view at point B in the middle;

[0022] Figure 5 This is an unfolded view of the folded layer structure of the reed in this embodiment;

[0023] Figure 6 This is a schematic diagram of the structure of the sheet substrate being folded in a "Z" shape in step S3 of the method for manufacturing the spring of the relay in this embodiment;

[0024] Figure 7 This is a schematic diagram of step S3 of the method for manufacturing the relay spring of this embodiment, in which the "Z"-shaped bent structures are pressed together to form a multi-layered bent-fold structure. Detailed Implementation

[0025] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and 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 drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] Reference Figure 1-7As shown, this embodiment provides a relay connection structure 1, including a reed 10, a yoke 20, a reed lead 30, a rivet 40, and an armature 50.

[0029] The spring 10 includes a sheet-like spring body portion 101, and a fixing portion 11 with a bent-fold layer structure is provided on one side of the spring body portion 101. Each layer of the fixing portion 11 with the bent-fold layer structure is provided with a coaxially arranged mounting hole 12. The mounting hole 12 is used to pass through a connector 40, such as a rivet 40, thereby fixing the spring 10 to one side of the yoke 20. However, it is not limited to this. In some other embodiments, the spring 10 can be fixedly connected to one side of a mounting structure by a rivet 40, for example, 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 spring 10 is a movable spring.

[0030] In this embodiment, the fixing part 11 of the bent folded layer structure extends and protrudes from the spring body part 101, thereby forming the spring lead-out foot 30. Thus, the spring 10 and the spring lead-out foot 30 are integrated into a single structure, which is more streamlined, easier to process, and lower in cost. Furthermore, a step part 31 for installation and positioning is formed on the spring lead-out foot 30, which facilitates the installation and positioning of the spring lead-out foot 30 and the spring 10.

[0031] The fixing part 11 of the folded layer structure includes at least one outer layer 111 away from the yoke 20, and at least one inner layer 112, 113 close to the yoke 20.

[0032] Preferably, the fixing part 11 of the folded layer structure has at least three layers, and the outer layer 111 and the inner layer are arranged in a continuous "Z" shape folding arrangement, which is simple to process and easy to manufacture.

[0033] In this embodiment, the fixing part 11 of the bent-fold layer structure has three layers. The fixing part 11 of the bent-fold layer structure has two internal layers, namely the first internal layer 112 and the second internal layer 113. The outer layer 111, the first internal layer 112 and the second internal layer 113 of the fixing part 11 of the bent-fold layer structure are arranged in a "Z" shape, which facilitates processing and manufacturing.

[0034] In this embodiment, the mounting hole 12 penetrates the outer stack 111, the first inner stack 112, and the second inner stack 113. The outer stack 111 has an external mounting hole 121, and the first inner stack 112 and the second inner stack 113 have internal mounting holes 122 of the same diameter, with the diameter of the external mounting hole 121 being larger than that of the internal mounting hole 122. The connector 40 has a head with an increased diameter. In this embodiment, the rivet 40 has a rivet head protrusion, so that the rivet head protrusion of the rivet 40 is at least partially accommodated in the external mounting hole 121, which can reduce the space occupied by the rivet 40, thereby maximizing the use of product space and facilitating product miniaturization; at the same time, it is beneficial to achieve more reliable positioning of the spring 10.

[0035] In some other embodiments, the fixing part 11 of the bent folded layer structure has four layers, including a first outer layer, a second outer layer, a first inner layer, and a second inner layer. The first outer layer and the second outer layer are provided with external mounting holes of the same diameter, and the first inner layer and the second inner layer are provided with internal mounting holes of the same diameter. The diameter of the external mounting holes is larger than the diameter of the internal mounting holes, which is also an implementable technical solution.

[0036] In some other embodiments, the fixing part of the bent folded structure has three layers, including an outer layer, a first inner layer, and a second inner layer. The outer layer has an external mounting hole, the first inner layer has a first inner mounting hole, and the second inner layer has a second inner mounting hole. The diameter of the external mounting hole is larger than that of the first inner mounting hole, and the diameter of the first inner mounting hole is larger than that of the second inner mounting hole. Combined with specially designed stepped rivets, this also facilitates more reliable positioning of the spring 10.

[0037] In this embodiment, during the fabrication of the aforementioned structure, before folding, external mounting holes 121 can be pre-punched in the outer layer 111 to form the largest possible size. Then, the layers are stacked, and through the pre-punched holes (i.e., the external mounting holes 121), other internal layers are punched to form smaller holes of the same diameter, creating internal mounting holes 122. Since fewer layers need to be punched simultaneously, burr residue during punching is reduced. Particularly in this embodiment, the spring 10 is a moving spring. Because the moving spring needs to reciprocate internally, the above structure and its manufacturing method can reduce burrs falling out of the riveting holes due to movement, improving the relay's withstand voltage performance. Of course, as those skilled in the art can anticipate, in other embodiments, the spring 10 is a stationary spring, which is also a feasible technical solution.

[0038] Although this embodiment uses connection structure 1 in a relay as an example for description, as those skilled in the art can anticipate, this connection structure can be applied to other switching devices, such as contactors.

[0039] Example 2

[0040] Reference Figure 1-7 This embodiment provides a method for manufacturing a relay spring, wherein the relay spring can be the relay spring 10 of Embodiment 1 described above. The method for manufacturing the relay spring includes the following steps:

[0041] S1, a sheet substrate is provided, and the flattened outline of the spring body 101 and the fixing part 11 of the bent and folded layer structure is formed on the sheet substrate, for example, by punching or laser cutting.

[0042] S2, an external mounting hole 121 is formed on the flattened outline of the fixing part 11 of the bent and folded layer structure at a position corresponding to the position of the external stack 111; for example, it is formed by punching or laser cutting.

[0043] S3, bending the sheet substrate to form a continuous bent structure, such as Figure 6 A fixing part that presses continuous bent structures together to form a multi-layered bent-fold structure; the fixing part of the multi-layered bent-fold structure includes at least one inner layer and at least one inner layer.

[0044] The fixing part of the multi-layered bent-fold structure can be, for example, two layers or more. Preferably, the fixing part of the bent-fold structure has at least three layers, thereby bending the fixing part 11 of the bent-fold structure to form a continuous "Z"-shaped bent structure; in this embodiment, the fixing part of the bent-fold structure has three layers, and the fixing part of the three-layered bent-fold structure formed by pressing the continuous "Z"-shaped bent structure together includes an outer layer 111, a first inner layer 112, and a second inner layer 113.

[0045] S4, using the external mounting hole 121 as a positioning reference, an internal mounting hole 112 of the same diameter 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.

[0046] The above manufacturing method can reduce the amount of burrs left during punching, thereby reducing the amount of burrs falling out of the riveting hole due to movement and improving the voltage resistance of the relay.

[0047] In this embodiment, in step S1, the flattened outline of the fixing part 11 formed on the provided sheet substrate extends out of the flattened outline of the spring body part 101, so that the fixing part 11 can be formed as the spring lead-out foot 30. The above method can also be a manufacturing method of the spring lead-out foot 30, so that the spring 10 and the spring lead-out foot 30 are an integral structure, which is more concise, easier to process, and lower in cost.

[0048] In step S1, a stepped groove 115 is formed on the flattened outline of the fixing part 11 formed on the provided sheet substrate, so that the fixing part 11 can be formed as a spring lead-out foot 30 with a step part 31 for installation and positioning, which is beneficial for the installation and positioning of the spring lead-out foot 30 and the spring 10.

[0049] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A spring for a switching device, the spring comprising a sheet-shaped spring body portion, one side of the spring body portion having a fixing portion with a bent-fold layer structure, each layer of the fixing portion with the bent-fold layer structure having a coaxially arranged mounting hole, the mounting hole for inserting a connector, thereby fixing the spring to a mounting structure; the fixing portion with the bent-fold layer structure includes at least one outer layer away from the mounting structure and at least one inner layer close to the mounting structure, characterized in that... The outer laminated layer is provided with an outer mounting hole, and the inner laminated layer is provided with an inner mounting hole; the diameter of the outer mounting hole is larger than that of the inner mounting hole.

2. The reed of the switch electric appliance according to claim 1, characterized in that: The connecting member has a head with an increased diameter, and the diameter of the outer mounting hole is adapted to at least partially accommodate the head of the connecting member.

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

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

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

6. The reed of the switch electric appliance according to claim 1, characterized in that: The fixed part of the bent laminated structure extends out of the reed body part, thereby forming a reed lead-out leg.

7. The reed of the switch electric appliance according to claim 6, characterized in that: A step part for mounting and positioning is formed on the reed lead-out leg.

8. A switchgear, characterized by A reed of a switch electric appliance as claimed in any one of claims 1-7, and a connecting member and a mounting structure; the reed is fixedly connected to the mounting structure through the connecting member.

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

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