A low-voltage switchgear with stable connection

Abstract

The utility model discloses a low -voltage switchgear of stable connection, this stable connection low -voltage switchgear includes drawer unit, secondary socket, the backplate of drawer unit is equipped with secondary plug, a plurality of equidistance's conducting board is equipped with in secondary plug, the conducting jack of accommodating conducting board is equipped with in secondary socket, one side of conducting board is equipped with first elastic member, and the other side is equipped with second elastic member, and with first elastic member constitute the relation of misplacement, first elastic member and second elastic member are closely and abut in conducting jack. Through first elastic member and second elastic member realize conducting board and conducting jack closely connect, enhance friction, and utilize misplacement structure and increase contact area, make stress distribution even, thereby reduce contact resistance, locking portion abut conducting board and prevent vibration and separate, and the compact part forms the clamping force, ensure that locking portion and the stable contact of abutment surface, improve the reliability of connection, and this structure has the fatigue resistance, prolongs the life.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a low-voltage switchgear with stable connection. Background Technology

[0002] Low-voltage switchgear uses a steel plate enclosure, and its mainstream structure is drawer-type. It typically consists of an enclosure, primary modules, secondary modules, circuit breakers, and auxiliary components. Electrical components such as incoming and outgoing lines and modules are installed in removable drawer units, forming functional units capable of independently completing specific power supply tasks.

[0003] Low-voltage switchgear drawer units are used to control power supply and interruption, and have four typical states: working position, test position, isolated position, and withdrawn position. In the working position, both primary and secondary connectors are connected; in the test position, the primary connectors are disconnected, while the secondary connectors remain connected; in the isolated position, both primary and secondary connectors are disconnected, but the withdrawable components remain mechanically connected to the housing; in the withdrawn position, both primary and secondary connectors are disconnected, the withdrawable components are no longer mechanically and electrically connected to the housing, and the drawer unit can be completely removed. This type of drawer unit offers high reliability, safety, and interchangeability, making it suitable for industrial and mining enterprises and high-rise buildings with high power supply reliability requirements, serving as a centralized control power distribution center.

[0004] Existing low-voltage drawer cabinet secondary connectors consist of plugs and sockets, achieving electrical connection through insertion. However, during equipment operation, vibrations from the electronic equipment and components inside the cabinet can easily cause the plugs and sockets to loosen or separate, leading to circuit faults or malfunctions. Furthermore, frequent opening and closing not only generate electric arcs, damaging the plug surface, but also increase contact resistance, causing the plug and socket to heat up rapidly, potentially leading to fires and increasing system safety hazards. In addition, long-term vibration can exacerbate mechanical wear on the connectors, further reducing connection reliability and affecting normal equipment operation and maintenance cycles. This application proposes an improvement scheme to address the above problems, enhancing the stability and safety of the secondary connector structure under vibration conditions. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of traditional low-voltage switchgear designs and provide a product with a reliable connection.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A low-voltage switchgear with stable connection includes a drawer unit and a secondary socket. The back panel of the drawer unit is provided with a secondary plug. The secondary plug is provided with a plurality of equally spaced conductive plates. The secondary socket is provided with conductive sockets for accommodating the conductive plates. One side of the conductive plate is provided with a first elastic member and the other side is provided with a second elastic member, which is misaligned with the first elastic member. The first elastic member and the second elastic member are tightly abutted against the conductive socket. The two ends of the conductive socket are provided with locking parts, which are embedded in the conductive plate. The upper and lower parts of the conductive socket are provided with pressing parts that contract towards the middle and are tightly abutted against the head of the conductive plate.

[0008] Preferably, the conductive plate is provided with through holes for forming the first elastic element and the second elastic element.

[0009] Preferably, the first elastic member and the second elastic member include a compression portion connected to one end of the through hole and arranged at an inclination, the compression portion extending to provide an abutment portion, the connection between the compression portion and the extension portion being provided with a curved first energy storage portion, the abutment portion extending to provide a connecting portion and connected to the other end of the through hole, and the connection between the connecting portion and the abutment portion being provided with a curved second energy storage portion.

[0010] Preferably, the locking part is disposed near the entrance of the conductive socket, the entrance of the locking part is provided with a first inclined surface, and the locking part is provided with a second inclined surface away from the first inclined surface.

[0011] Preferably, the conductive plate is provided with a fixing groove for accommodating the locking part, one end of the fixing groove is provided with a contact surface that abuts against the first inclined surface, and the other end is provided with a release surface that abuts against the second inclined surface.

[0012] Preferably, the first elastic element and the second elastic element are integrally formed with the conductive plate.

[0013] Beneficial effects:

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention achieves a tight connection between the conductive plate and the conductive socket through the first and second elastic elements, enhancing friction and increasing the contact area through a staggered structure, thus ensuring uniform stress distribution and effectively reducing contact resistance. The locking part abuts tightly against the conductive plate, preventing the conductive plate from detaching from the conductive socket due to vibration. The upper and lower clamping parts form a clamping force, further enhancing friction and ensuring stable contact between the locking part and the contact surface, thereby improving the overall connection reliability. This structure also has good fatigue resistance, extends service life, and adapts to electrical connection requirements under different working conditions. Attached Figure Description

[0016] Figure 1This is a structural schematic diagram of a low-voltage switchgear with stable connection according to the present invention;

[0017] Figure 2 This is a cross-sectional view of a low-voltage switchgear with stable connection according to the present invention.

[0018] Figure 3 This utility model Figure 2 A partial enlarged view A of a low-voltage switchgear with stable connection;

[0019] Figure 4 This is a schematic diagram of the secondary plug structure of a low-voltage switchgear with stable connection according to the present invention. Figure 1 ;

[0020] Figure 5 This is a schematic diagram of the secondary plug structure of a low-voltage switchgear with stable connection according to the present invention. Figure 2 ;

[0021] The correspondence between the labels and component names in the attached figures is as follows:

[0022] Reference numerals: 1. Drawer unit; 2. Secondary socket; 3. Secondary plug; 4. Conductive plate; 21. Conductive socket; 22. Locking part; 23. Pressing part; 221. First inclined surface; 222. Second inclined surface; 41. First elastic element; 42. Second elastic element; 43. Through hole; 44. Compression part; 45. Contact part; 46. First energy storage part; 47. Connecting part; 48. Second energy storage part; 49. Fixing groove; 491. Contact surface; 492. Release surface. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0025] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0026] Reference example Figures 1 to 5 A stable low-voltage switch cabinet includes a drawer unit 1 and a secondary socket 2. The back panel of the drawer unit 1 is provided with a secondary plug 3. The secondary plug 3 is provided with a plurality of equally spaced conductive plates 4. The secondary socket 2 is provided with a conductive socket 21 for accommodating the conductive plates 4. One side of the conductive plate 4 is provided with a first elastic member 41 and the other side is provided with a second elastic member 42, which are misaligned with the first elastic member 41. The first elastic member 41 and the second elastic member 42 are tightly abutted against the conductive socket 21. The two ends of the conductive socket 21 are provided with locking parts 22, which are embedded in the conductive plate 4. The upper and lower parts of the conductive socket 21 are provided with pressing parts 23 that shrink towards the middle, and are tightly abutted against the head of the conductive plate 4.

[0027] The first elastic element 41 and the second elastic element 42 achieve a tight connection between the conductive plate 4 and the conductive socket 21, enhancing friction and increasing the contact area through the staggered structure, thus making the stress distribution uniform and effectively reducing the contact resistance. The locking part 22 abuts tightly against the conductive plate 4, preventing the conductive plate 4 from detaching from the conductive socket 21 due to vibration. The upper and lower clamping parts 23 form a clamping force, further increasing friction and ensuring that the locking part 22 and the contact surface 491 maintain stable contact, thereby improving the overall connection reliability. This structure also has good fatigue resistance, extends service life, and adapts to the electrical connection requirements under different working conditions.

[0028] It is worth mentioning that the conductive plate 4 is provided with through holes 43 for forming the first elastic element 41 and the second elastic element 42.

[0029] The through-hole 43 design provides a structural basis for the elastic element, allowing the elastic element to be integrally molded on the conductive plate 4, simplifying the manufacturing process and improving structural consistency. The layout of the through-hole 43 optimizes the deformation path of the elastic element, ensuring uniform release of elastic force and improving contact reliability.

[0030] It is worth mentioning that the first elastic member 41 and the second elastic member 42 include a compression part 44 connected to one end of the through hole 43 and arranged at an inclination. The compression part 44 extends to provide a contact part 45. A curved first energy storage part 46 is provided at the connection between the compression part 44 and the extension part. The contact part 45 extends to provide a connecting part 47 and is connected to the other end of the through hole 43. A curved second energy storage part 48 is provided at the connection part 47 and the contact part 45. The elastic member adopts a multi-segment curved structure, including the compression part 44, the contact part 45, the first energy storage part 46, the connecting part 47 and the second energy storage part 48, forming a multi-level elastic buffer system. When the conductive plate 4 is initially inserted into the conductive socket 21, the compression part 44 guides the contact part 45 to contract in the direction of the conductive plate 4 to achieve smooth insertion. This design provides a progressive buffer force during insertion and removal, reducing damage to the contact part 45. At the same time, the energy storage part structure enhances the elastic recovery ability of the contact part 45, ensuring that good contact pressure is maintained even after long-term use.

[0031] It is worth mentioning that the locking part 22 is located near the entrance of the conductive socket 21. The entrance of the locking part 22 is provided with a first inclined surface 221, and the locking part 22 is provided with a second inclined surface 222 away from the first inclined surface 221. The locking part 22 adopts a double inclined surface design. The first inclined surface 221 facilitates the guidance when the conductive plate 4 is inserted, and the second inclined surface 222 is used for smooth transition when it is disengaged. This structure optimizes the insertion and extraction force curve, reduces the difficulty of operation, avoids hard impact damage, and improves user experience and structural durability.

[0032] It is worth mentioning that the conductive plate 4 is provided with a fixing groove 49 for accommodating the locking part 22. One end of the fixing groove 49 is provided with a contact surface 491 that abuts against the first inclined surface 221, and the other end is provided with a release surface 492 that abuts against the second inclined surface 222. The fixing groove 49 and the locking part 22 form a precision fit structure. The contact surface 491 and the release surface 492 correspond to the double inclined surfaces of the locking part 22, respectively, realizing the insertion self-locking and release guidance functions. This design significantly improves the mechanical stability and vibration resistance of the connection and is suitable for electrical equipment with high reliability requirements.

[0033] It is worth mentioning that the first elastic element 41 and the second elastic element 42 are integrally formed with the conductive plate 4. The elastic elements and the conductive plate 4 are integrally formed by stamping, which reduces the number of parts, simplifies the assembly process, reduces production costs, and improves the overall structural strength and long-term reliability. This process ensures that there are no seams or transition areas between the elastic elements and the conductive plate 4, enhances current conduction efficiency and structural consistency, and avoids performance fluctuations caused by loosening or poor contact.

[0034] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A low-voltage switchgear with stable connection, comprising a drawer unit (1) and a secondary socket (2), wherein the back panel of the drawer unit (1) is provided with a secondary plug (3), characterized in that: The secondary plug (3) is provided with several equally spaced conductive plates (4), and the secondary socket (2) is provided with conductive sockets (21) for accommodating the conductive plates (4). One side of the conductive plate (4) is provided with a first elastic element (41), and the other side is provided with a second elastic element (42), which is misaligned with the first elastic element (41). The first elastic element (41) and the second elastic element (42) are tightly abutted against the conductive socket (21). The two ends of the conductive socket (21) are provided with locking parts (22), which are embedded in the conductive plate (4). The upper and lower parts of the conductive socket (21) are provided with pressing parts (23) that shrink towards the middle, and are tightly abutted against the head of the conductive plate (4).

2. The low-voltage switchgear with stable connection according to claim 1, characterized in that: The conductive plate (4) is provided with through holes (43) for forming the first elastic element (41) and the second elastic element (42).

3. The connection-stable low-voltage switchgear according to claim 2, characterized in that: The first elastic member (41) and the second elastic member (42) include a compression portion (44) connected to one end of the through hole (43) and arranged at an inclination. The compression portion (44) extends to provide an abutment portion (45). A curved first energy storage portion (46) is provided at the connection between the compression portion (44) and the extension portion. The abutment portion (45) extends to provide a connecting portion (47) and is connected to the other end of the through hole (43). A curved second energy storage portion (48) is provided at the connection portion (47) between the connecting portion (47) and the abutment portion (45).

4. The connection-stable low-voltage switchgear according to Claim 1, characterized in that: The locking part (22) is located near the entrance of the conductive socket (21). The entrance of the locking part (22) is provided with a first inclined surface (221), and the locking part (22) is provided with a second inclined surface (222) away from the first inclined surface (221).

5. The connection-stable low-voltage switchgear according to Claim 4, characterized in that: The conductive plate (4) is provided with a fixing groove (49) for accommodating the locking part (22). One end of the fixing groove (49) is provided with a contact surface (491) that abuts against the first inclined surface (221), and the other end is provided with a disengagement surface (492) that abuts against the second inclined surface (222).

6. The low-voltage switchgear with stable connection according to claim 1, characterized in that: The first elastic element (41) and the second elastic element (42) are integrally formed with the conductive plate (4).

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