A contact assembly and load switch

Abstract

The utility model provides a kind of contact assembly and load switch, it is related to electrical equipment technical field.Contact assembly includes contact seat, pivot, movable contact and elastic part.Contact seat includes the body and installation part being connected, and contact seat is also provided with the through-hole of the body and installation part being penetrated;Pivot is worn in through-hole;Movable contact is movably arranged in pivot;Elastic part is arranged in installation part and is in abutment with movable contact, and elastic part is between body and movable contact, so that contact assembly structure is compact, and elastic part is fixed without additional fixed component, reduce production cost, it is convenient for later maintenance simultaneously;In addition, movable contact is also acted by the elastic force of elastic part under the condition of closing, so as to increase the contact pressure of movable contact and static contact, so as to improve the short endurance of contact assembly, and to improve the operation stability and reliability of load switch.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and more specifically, to a contact assembly and a load switch. Background Technology

[0002] In existing electronic devices or switching devices, load switches are key components for controlling circuit on / off states, and the design of their contact assemblies directly affects the performance and reliability of the equipment. However, current load switch structures still have many shortcomings.

[0003] For example, the structural design of several components in the contact assembly of existing load switches is unreasonable, resulting in poor contact stability between the moving and stationary contacts in the closed state, which leads to poor stability and reliability of the load switch. Utility Model Content

[0004] The purpose of this utility model is to provide a contact assembly and a load switch, which has a compact structure, reasonable layout, and can increase contact pressure, thereby improving the stability and reliability of the load switch.

[0005] The embodiments of this utility model are implemented as follows: In a first aspect, this utility model provides a contact assembly, comprising: A contact seat, comprising a body and a mounting portion connected to each other, and the contact seat further comprising a through hole penetrating the body and the mounting portion; A rotating shaft, which passes through the through hole; A moving contact, which is movably disposed on the rotating shaft; An elastic element is disposed in the mounting portion and abuts against the moving contact. The elastic element is located between the body and the moving contact. The elastic element is used to provide a force for the moving contact to move toward the stationary contact when the circuit is closed.

[0006] In an optional embodiment, one end of the moving contact is movably disposed on the rotating shaft and contacts the side of the mounting portion opposite to the body, and the other end is provided with a contact portion for contacting the stationary contact.

[0007] In an optional embodiment, the contact portion is located on one side of the moving contact, and a first overlapping portion is provided on the opposite side of the moving contact. The elastic member abuts against the first overlapping portion, and the first overlapping portion extends toward the body along the axial direction of the rotating shaft. The sidewall of the moving contact toward the body is used to restrict the movement of the elastic member toward a direction away from the body.

[0008] In an optional embodiment, a limiting portion is provided on the first overlapping portion, the limiting portion being used to restrict the movement of the elastic member toward the body along the axis of rotation.

[0009] In an optional embodiment, the contact seat further includes a second overlapping portion connected to the body, the elastic member is sleeved on the mounting portion, and one end of the elastic member abuts against the second overlapping portion and the other end abuts against the first overlapping portion.

[0010] In an optional embodiment, the contact seat further includes a connecting portion connected to the body and located on the side of the rotating shaft away from the moving contact. The connecting portion is used to connect to a transmission member to drive the moving contact to rotate under the drive of the transmission member.

[0011] In an optional embodiment, the contact seat further includes a transmission part, which is connected to the body and abuts against the moving contact, for driving the moving contact to rotate synchronously.

[0012] In an optional embodiment, there are two mounting parts, two moving contacts, and two elastic elements. The two mounting parts are respectively disposed on both sides of the main body, the two elastic elements are respectively disposed on the two mounting parts, and the two moving contacts are respectively disposed on the rotating shafts on both sides of the two mounting parts.

[0013] In an optional embodiment, the contact assembly further includes two flexible connections, each of which is connected to two opposite sidewalls of the two moving contacts.

[0014] Secondly, this utility model provides a load switch, including a housing and an electromagnetic component, an armature, a transmission component, and a contact assembly as described in any of the foregoing embodiments, all disposed within the housing. The contact assembly further includes a stationary contact. Under the drive of the electromagnetic component and the armature, the transmission component drives the contact seat to move sequentially, thereby driving the moving contact to contact or separate from the stationary contact.

[0015] The beneficial effects of the contact assembly and load switch provided by this utility model embodiment include: by setting the elastic element in the mounting part and placing it between the body and the moving contact, the contact assembly structure is compact, and no additional fixing parts are needed to fix the elastic element, reducing production costs and facilitating later maintenance; in addition, in the closed state, the elastic force of the elastic element acts on the moving contact, thereby increasing the contact pressure between the moving contact and the stationary contact, thereby improving the short-term withstand performance of the contact assembly, and thus improving the operational stability and reliability of the load switch. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the load switch structure provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the contact assembly structure provided in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the contact seat structure provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the moving contact structure provided in an embodiment of the present utility model.

[0018] Icons: 10-Load switch; 11-Contact assembly; 100-Contact base; 110-Body; 120-Mounting part; 130-Through hole; 140-Second overlapping part; 150-Transmission part; 160-Connecting part; 200-Rotating shaft; 300-Moving contact; 310-Contact part; 320-First overlapping part; 330-Limiting part; 400-Elastic element; 500-Flexible connection; 600-Stationary contact; 12-Housing; 13-Electromagnetic assembly; 14-Armature; 15-Transmission element; Detailed Implementation To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In existing electronic equipment or switching devices, load switches are key components for controlling circuit on / off states, and the design of their contact assemblies directly affects the performance and reliability of the equipment. However, current load switch structures still have many shortcomings. For example, the structural design of several components in the contact assemblies of existing load switches is unreasonable, resulting in poor contact stability between the moving and stationary contacts in the closed state, thus leading to poor stability and reliability of the load switch.

[0025] Therefore, there is an urgent need to provide an improved design scheme for load switch contact assemblies to overcome the problem of poor contact stability in the existing technology, ensure that the moving contact and the stationary contact can maintain a good contact state under various operating conditions, improve the reliability and durability of the equipment, and meet the needs of modern power systems for high-performance switchgear.

[0026] Based on the problems existing in the current technology, please refer to Figures 1 to 4This utility model provides a load switch 10, including a housing 12 and an electromagnetic component 13, an armature 14, a transmission component 15, and a contact assembly 11 disposed within the housing 12. The contact assembly 11 also includes a stationary contact 600. Driven by the electromagnetic component 13 and the armature 14, the transmission component 15 is moved, which in turn drives the contact seat 100 to move synchronously. Finally, the contact seat 100 drives the moving contact 300 to move toward or away from the stationary contact 600, thereby contacting or separating from the stationary contact 600, thus realizing the closing or opening action.

[0027] In detail, the contact assembly 11 includes a contact seat 100, a rotating shaft 200, a moving contact 300, and an elastic element 400.

[0028] The contact base 100 includes a body 110 and a mounting portion 120 connected to each other. The contact base 100 is also provided with a through hole 130 passing through the body 110 and the mounting portion 120. The rotating shaft 200 passes through the through hole 130. The moving contact 300 is movably disposed on the rotating shaft 200. The elastic member 400 is disposed on the mounting portion 120 and abuts against the moving contact 300. The elastic member 400 is located between the body 110 and the moving contact 300. The elastic member 400 is used to provide a force for the moving contact 300 to move toward the stationary contact 600 when the circuit is closed.

[0029] In this embodiment, by placing the elastic element 400 in the mounting portion 120 and positioning it between the body 110 and the moving contact 300, the contact assembly 11 is made compact, and no additional fixing components are needed to fix the elastic element 400. The elastic element 400 is not easily lost, reducing production costs and facilitating later maintenance. In addition, in the closed state, the elastic force of the elastic element 400 acts on the moving contact 300, thereby increasing the contact pressure between the moving contact 300 and the stationary contact 600, thus improving the short-term withstand performance of the contact assembly 11 and thereby improving the operational stability and reliability of the load switch 10.

[0030] It should be noted that one end of the moving contact 300 is movably disposed on the rotating shaft 200 and contacts the side of the mounting part 120 away from the body 110, that is, the moving contact 300 and the mounting part 120 are in abutting state, and the other end is provided with a contact part 310, which is used to contact the stationary contact 600.

[0031] At one end of the moving contact 300, a contact portion 310 is provided. The contact portion 310 is located on one side of the moving contact 300. On the other side opposite to the moving contact 300, a first overlapping portion 320 is provided. The elastic member 400 abuts against the first overlapping portion 320. The first overlapping portion 320 extends toward the body 110 along the axial direction of the rotating shaft 200. The side wall of the moving contact 300 toward the body 110 is used to restrict the elastic member 400 from moving away from the body 110.

[0032] In other words, the sidewalls of the body 110 and the moving contact 300 confine the elastic element 400 between them, so that the elastic element 400 maintains a relatively stable state on the mounting portion 120, thereby improving the installation stability of the contact assembly 11. Secondly, the moving contact 300 and the mounting portion 120 are abutted together, that is, the moving contact 300 and the contact seat 100 are connected by a rotating shaft 200, so that the shaft hole opened on the moving contact 300 does not need to be too large, reducing the overall volume of the moving contact 300. Furthermore, since the first overlapping portion 320 extends along the width direction of the body 110, the width of the first overlapping portion 320 is greater than the width of the body. That is, the width of the end of the moving contact 300 where the contact portion 310 is located is greater than the width of the end where the rotating shaft 200 is located. This ensures that the point of force application between the elastic member 400 and the first overlapping portion 320 is located in the middle of the contact portion 310. This ensures that the moving contact 300 will not tilt under the action of the elastic member 400, thus making the contact portion 310 contact the stationary contact surface of the stationary contact 600, ensuring its contact stability.

[0033] Furthermore, in order to further improve the stability of the elastic member 400, a limiting part 330 is provided on the first overlapping part 320. The limiting part 330 is used to restrict the movement of the elastic member 400 along the axis of the rotating shaft 200 toward the body 110.

[0034] It is understood that the side wall of the moving contact 300 facing the body 110 can restrict the elastic member 400 from moving away from the body 110, and the limiting part 330 can restrict the contact part between the elastic member 400 and the moving contact 300 from moving towards the body 110. This ensures that the contact part between the elastic member 400 and the moving contact 300 is always located in the middle of the first overlapping part 320, so that the elastic force generated by the elastic member 400 can act on the middle of the first overlapping part 320. This makes the moving contact 300 subject to balanced force, ensuring that the contact part 310 of the moving contact 300 and the stationary contact 600 are in surface-to-surface contact, preventing the moving contact 300 from contacting the stationary contact 600 in an inclined state. This allows the contact part 310 of the moving contact 300 and the stationary contact 600 to make more stable contact, improving its stability and reliability.

[0035] It is understood that in this embodiment, the elastic element 400 can be, but is not limited to, a torsion spring. When the elastic element 400 is a torsion spring, the contact seat 100 also includes a second overlapping portion 140 connected to the body 110. The elastic element 400 is sleeved on the mounting portion 120, and one end of the elastic element 400 abuts against the second overlapping portion 140, while the other end abuts against the first overlapping portion 320.

[0036] This design ensures that the elastic element 400 undergoes elastic deformation under the action of the contact seat 100, and generates an elastic force that acts on the first lap portion 320 of the moving contact 300.

[0037] It should be noted that the contact seat 100 also includes a transmission part 150, which is connected to the body 110 and abuts against the moving contact 300 to drive the moving contact 300 to rotate synchronously.

[0038] In other words, when the contact seat 100 rotates relative to the housing 12, it abuts against the moving contact 300 through the transmission part 150, thereby driving the moving contact 300 to rotate synchronously. When the moving contact 300 contacts the stationary contact 600, the contact seat 100 will rotate slightly further, i.e., "overtravel". At this time, the contact seat 100 and the moving contact 300 move relative to each other, thereby causing the elastic element 400 to deform elastically. As a result, the elastic force generated by the elastic element 400 acts on the moving contact 300, making the moving contact 300 tend to move further toward the stationary contact 600, thereby increasing the contact force between the moving contact 300 and the stationary contact 600, and achieving stable contact between the moving contact 300 and the stationary contact 600.

[0039] Since the contact seat 100 rotates relative to the housing 12 under the drive of the transmission member 15, the contact seat 100 also includes a connecting part 160. The connecting part 160 is connected to the body 110 and is located on the side of the rotating shaft 200 away from the moving contact 300. The connecting part 160 is connected to the transmission member 15 so as to drive the moving contact 300 to rotate under the drive of the transmission member 15.

[0040] Furthermore, the contact assembly 11 provided in this embodiment is a double contact structure, that is, the number of mounting part 120, moving contact 300 and elastic member 400 are all two. The two mounting parts 120 are respectively disposed on both sides of the body 110, the two elastic members 400 are respectively disposed on the two mounting parts 120, and the two moving contacts 300 are respectively disposed on the rotating shafts 200 on both sides of the two mounting parts 120.

[0041] It should be noted that, Figure 3 The structure of the contact seat 100 is only shown on one side of the body 110; however, in this embodiment, the related structures on the contact seat 100, such as the two mounting parts 120, are symmetrically arranged on both sides of the body 110.

[0042] Understandably, the dual-contact structure effectively shunts current, reduces the current density of individual contacts, and decreases heat generation, thereby improving overall current carrying capacity and long-term operational stability. Furthermore, the two moving contacts 300 operate in parallel; even if one moving contact 300 experiences increased contact resistance due to wear or contamination, the other moving contact 300 can still maintain a conductive path, significantly reducing the risk of power outages and making it suitable for applications with high reliability requirements.

[0043] It is worth mentioning that the two moving contacts 300 and the two elastic elements 400 are symmetrically arranged on the contact seat 100.

[0044] Correspondingly, the contact assembly 11 also includes two flexible connections 500, which are respectively connected to the two side walls opposite to the two moving contacts 300.

[0045] Specifically, the flexible connection 500 is connected to the side of the moving contact 300 away from the elastic element 400, thereby avoiding mutual interference between the flexible connection 500 and the elastic element 400, thus improving the motion stability and reliability of the contact assembly 11.

[0046] In summary, this utility model provides a contact assembly 11 and a load switch 10. By placing the elastic element 400 in the mounting part 120 and positioning it between the body 110 and the moving contact 300, the contact assembly 11 has a compact structure and does not require additional fixing parts to fix the elastic element 400, thus reducing production costs and facilitating later maintenance. In addition, in the closed state, the elastic force of the elastic element 400 acts on the moving contact 300, thereby increasing the contact pressure between the moving contact 300 and the stationary contact 600, thereby improving the short-term withstand performance of the contact assembly 11 and thus improving the operational stability and reliability of the load switch 10.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A contact assembly, characterized by, include: The contact base (100) includes a body (110) and a mounting part (120) connected to each other. The contact base (100) is also provided with a through hole (130) penetrating the body (110) and the mounting part (120). A rotating shaft (200) passes through the through hole (130). A movable contact (300) is movably disposed on the rotating shaft (200); An elastic element (400) is disposed on the mounting portion (120) and abuts against the moving contact (300). The elastic element (400) is located between the body (110) and the moving contact (300). The elastic element (400) is used to provide a force to the moving contact (300) towards the stationary contact (600) in the closed state.

2. The contact assembly according to claim 1, characterized in that, One end of the moving contact (300) is movably disposed on the rotating shaft (200) and contacts the side of the mounting part (120) away from the body (110), and the other end is provided with a contact part (310) for contacting the stationary contact (600).

3. The contact assembly according to claim 2, characterized in that, The contact portion (310) is located on one side of the moving contact (300), and a first overlapping portion (320) is provided on the opposite side of the moving contact (300). The elastic member (400) abuts against the first overlapping portion (320). The first overlapping portion (320) extends along the axial direction of the rotating shaft (200) toward the body (110). The sidewall of the moving contact (300) toward the body (110) is used to restrict the movement of the elastic member (400) toward a direction away from the body (110).

4. The contact assembly according to claim 3, characterized in that, The first overlapping part (320) is provided with a limiting part (330), which is used to restrict the elastic member (400) from moving toward the body (110) along the axis of the rotating shaft (200).

5. The contact assembly according to claim 3, characterized in that, The contact seat (100) further includes a second overlapping portion (140) connected to the body (110), the elastic member (400) is sleeved on the mounting portion (120), and one end of the elastic member (400) abuts against the second overlapping portion (140), and the other end abuts against the first overlapping portion (320).

6. The contact assembly according to claim 1, characterized in that, The contact seat (100) further includes a connecting part (160), which is connected to the body (110) and located on the side of the rotating shaft (200) away from the moving contact (300). The connecting part (160) is used to connect with the transmission member (15) to drive the moving contact (300) to rotate under the drive of the transmission member (15).

7. The contact assembly according to claim 1, characterized in that, The contact seat (100) also includes a transmission part (150), which is connected to the body (110) and abuts against the moving contact (300) to drive the moving contact (300) to rotate synchronously.

8. The contact assembly according to any one of claims 1-7, characterized in that, The number of the mounting part (120), the moving contact (300), and the elastic element (400) are all two. The two mounting parts (120) are respectively disposed on both sides of the body (110), the two elastic elements (400) are respectively disposed on the two mounting parts (120), and the two moving contacts (300) are respectively disposed on the rotating shafts (200) on both sides of the two mounting parts (120).

9. The contact assembly according to claim 8, characterized in that, The contact assembly also includes two flexible connections (500), which are respectively connected to two opposite sidewalls of the two moving contacts (300).

10. A load switch (10), characterized in that, The device includes a housing (12) and an electromagnetic component (13), an armature (14), a transmission component (15), and a contact assembly as described in any one of claims 1-9, wherein the contact assembly further includes a stationary contact (600). Driven by the electromagnetic component (13) and the armature (14), the transmission component (15) drives the contact seat (100) to move, thereby driving the moving contact (300) to contact or separate from the stationary contact (600).

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