A low voltage switchgear

Abstract

The utility model discloses a low -voltage switchgear, including the cabinet, the cabinet front end is equipped with the installation cavity, the cabinet front end is located the opposite position through hinged device fixed connection with the door body in the installation cavity, the hinged device is by first mounting plate, second mounting plate, rotation axis and sliding assembly constitute, first mounting plate fixed mounting is in the installation cavity inner wall surface, second mounting plate fixed mounting is in the door body inner wall, the rotation cavity is opened in first mounting plate, the rotation cavity is rotatably connected with second mounting plate, first mounting plate and second mounting plate are connected through rotation axis, and the rotation axis surface is sleeved with sliding assembly, and sliding assembly top is connected with second mounting plate, and sliding assembly bottom is connected with the rotation cavity inner wall. The above design, through setting up sliding assembly in the hinged device, the sliding friction when the door body rotates is converted into the rolling friction, and the movement resistance is reduced greatly, and the door body is ensured to open and close smoothly.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage switchgear technology, specifically a low-voltage switchgear. Background Technology

[0002] Low-voltage switchgear typically contains various electrical components such as switches and voltmeters, and is mainly used for power transmission, distribution, and energy conversion. It is suitable for power plants, substations, and other fields.

[0003] However, existing low-voltage switchgear cabinets are usually connected and fixed to the door by hinges. The existing hinges have a simple structural design and are exposed on the outside of the cabinet. After long-term use, the hinges are prone to rust, which may make it difficult to open the door or even make the door impossible to open, thus affecting the normal use of the low-voltage switchgear. Summary of the Invention

[0004] The purpose of this utility model is to provide a low-voltage switchgear to solve the problem mentioned in the background art that the cabinet and door of the existing low-voltage switchgear are usually connected and fixed by hinges. However, the existing hinges have a simple structural design and are exposed on the outside of the cabinet. After long-term use, the hinges are prone to rust, which may lead to difficulty in opening the door or even make the door impossible to open, thus affecting the normal use of the low-voltage switchgear.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a low-voltage switchgear, including a cabinet body, with an installation cavity at the front end of the cabinet body. A door body is fixedly connected to the front end of the cabinet body at a position opposite to the installation cavity via a hinge device. The hinge device consists of a first mounting plate, a second mounting plate, a rotating shaft, and a sliding assembly. The first mounting plate is fixedly installed on the inner wall surface of the installation cavity, and the second mounting plate is fixedly installed on the inner wall of the door body. A rotating cavity is formed inside the first mounting plate, and the second mounting plate is rotatably connected within the rotating cavity. The first mounting plate and the second mounting plate are connected via a rotating shaft. A sliding assembly is sleeved on the surface of the rotating shaft, and the top of the sliding assembly is connected to the second mounting plate, while the bottom of the sliding assembly is connected to the inner wall of the rotating cavity.

[0006] Preferably, the sliding assembly includes an upper connecting plate, a lower connecting plate, and ball bearings. The upper connecting plate is connected to the bottom of the second mounting plate, and the lower connecting plate is connected to the inner wall of the rotating cavity. A plurality of ball bearings are arranged in a ring between the upper connecting plate and the lower connecting plate.

[0007] Preferably, the upper connecting plate and the lower connecting plate have grooves on their surfaces facing each other, and the surfaces of the two grooves are in contact with the surface of the ball.

[0008] Preferably, the first mounting plate and the second mounting plate are respectively provided with a first rotating hole and a second rotating hole, and the surfaces of the upper connecting plate and the lower connecting plate are both provided with a third rotating hole, and a rotating shaft is connected in the first rotating hole, the second rotating hole and the third rotating hole.

[0009] Preferably, the surfaces of the first mounting plate and the second mounting plate are provided with a plurality of mounting holes. Beneficial effects

[0010] Compared with existing technologies, the beneficial effects of this utility model are as follows: By incorporating the structural design of this utility model, the sliding components are arranged in a ring with the grooves of the upper and lower connecting plates, which transforms the sliding friction during door rotation into rolling friction, significantly reducing motion resistance and ensuring smooth opening and closing of the door. This is especially suitable for long-term, high-frequency operation scenarios and effectively avoids the problem of the door failing to open properly due to hinge corrosion caused by environmental erosion. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the hinge device structure of this utility model; Figure 3 This is an exploded structural diagram of the hinge device of this utility model; Figure 4 This is a schematic diagram of the sliding component mating structure of this utility model.

[0012] The correspondence between the labels and component names in the attached figures is as follows: 1. Cabinet body; 2. Door body; 3. Hinge device; 11. Mounting cavity; 31. First mounting plate; 32. Second mounting plate; 33. Sliding assembly; 34. Rotating shaft; 35. Mounting hole; 311. Rotating cavity; 312. First rotating hole; 321. Second rotating hole; 331. Upper connecting plate; 332. Lower connecting plate; 333. Ball bearing; 334. Groove; 335. Third rotating hole. Detailed Implementation

[0013] 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.

[0014] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the invention 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0015] like Figure 1-4 This is a schematic diagram of a preferred embodiment of the present invention for a low-voltage switchgear. In this embodiment, the low-voltage switchgear includes a cabinet body 1. A rectangular mounting cavity 11 is provided at the front end of the cabinet body 1 for accommodating electrical components. At the relative position of the opening of the mounting cavity 11, a rectangular door 2 is fixedly connected to the front end of the cabinet body 1 via a hinge device 3, realizing the opening and closing function of the door 2. The hinge device 3 consists of a first mounting plate 31, a second mounting plate 32, a rotating shaft 34, and a sliding assembly 33. The first mounting plate 31 is fixedly mounted on the inner wall surface of the mounting cavity 11 by bolts passing through mounting holes 35. A rotating cavity 311 is provided inside the first mounting plate 31. The second mounting plate 32 is fixedly mounted on the inner wall surface of the door 2 corresponding to the position of the first mounting plate 31 by bolts passing through mounting holes 35. The rotating shaft 34 passes through the first mounting plate 31 and the second mounting plate 32, forming the rotation center between them. The sliding assembly 33 is sleeved on the surface of the rotating shaft 34. The top of the sliding assembly 33 is fixedly connected to the bottom of the second mounting plate 32, and its bottom is fixedly connected to the bottom surface of the inner wall of the rotating cavity 311. The function of the sliding assembly 33 is to support the rotation of the second mounting plate 32 relative to the first mounting plate 31 and reduce friction.

[0016] In this embodiment, the sliding assembly 33 includes an upper connecting plate 331, a lower connecting plate 332, and ball bearings 333. The top of the upper connecting plate 331 is fixedly connected to the bottom of the second mounting plate 32, and the bottom of the lower connecting plate 332 is fixedly connected to the bottom surface of the inner wall of the rotating cavity 311. Multiple ball bearings 333 are arranged in a ring between the upper connecting plate 331 and the lower connecting plate 332. These ball bearings 333 allow the upper connecting plate 331 to rotate relative to the lower connecting plate 332 with low friction. To accommodate and guide the ball bearings 333, an annular groove 334 is formed on the surface of the upper connecting plate 331 facing the lower connecting plate 332. A corresponding annular groove 334 is also formed on the surface of the lower connecting plate 332 facing the upper connecting plate 331. The ball bearings 333 are constrained to roll within these two opposing grooves 334, ensuring a stable motion trajectory.

[0017] In this embodiment, a first rotating hole 312 is provided on the first mounting plate 31 and a second rotating hole 321 is provided on the second mounting plate 32; and a third rotating hole 335 is provided at the center of both the upper connecting plate 331 and the lower connecting plate 332. The rotating shaft 34 passes sequentially through the second rotating hole 321 on the second mounting plate 32, the third rotating hole 335 on the upper connecting plate 331, the third rotating hole 335 on the lower connecting plate 332, and the first rotating hole 312 on the first mounting plate 31, thereby coaxially connecting and fixing the first mounting plate 31, the sliding assembly 33, and the second mounting plate 32 together to form a complete rotating hub.

[0018] In this embodiment, to facilitate fixing the mounting plates to the cabinet 1 and the door 2, multiple mounting holes 35 are provided on the surface of both the first mounting plate 31 and the second mounting plate 32. During installation, bolts are used to pass through these mounting holes 35 to firmly fasten the first mounting plate 31 to the inner wall of the mounting cavity 11 and the second mounting plate 32 to the inner wall of the door 2.

[0019] Working principle When the user opens or closes the door 2, the door 2 causes the second mounting plate 32 to rotate around the axis of the rotation shaft 34. The rotation of the second mounting plate 32 causes the upper connecting plate 331 of the sliding assembly 33 connected to it to rotate together. The upper connecting plate 331 drives the ball bearings 333 to roll in the groove 334 of the lower connecting plate 332 through its groove 334, thereby achieving low-friction and smooth rotation of the upper connecting plate 331 relative to the lower connecting plate 332. The entire hinge device 3 ensures that the door 2 opens and closes smoothly, effortlessly, and is durable.

[0020] 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, comprising a cabinet (1), characterized in that: The cabinet (1) has an installation cavity (11) at its front end. The front end of the cabinet (1) is fixedly connected to the door (2) via a hinge device (3) at the opposite position of the installation cavity (11). The hinge device (3) consists of a first mounting plate (31), a second mounting plate (32), a rotating shaft (34), and a sliding component (33). The first mounting plate (31) is fixedly installed on the inner wall surface of the installation cavity (11), and the second mounting plate (32) is fixedly installed on the inner wall of the door (2). The first mounting plate (31) has a rotating cavity (311) inside, and the second mounting plate (32) is rotatably connected inside the rotating cavity (311). The first mounting plate (31) and the second mounting plate (32) are connected to each other via a rotating shaft (34). The rotating shaft (34) has a sliding component (33) sleeved on its surface, and the top of the sliding component (33) is connected to the second mounting plate (32), and the bottom of the sliding component (33) is connected to the inner wall of the rotating cavity (311).

2. The low-voltage switchgear according to claim 1, characterized in that: The sliding assembly (33) includes an upper connecting plate (331), a lower connecting plate (332), and ball bearings (333). The upper connecting plate (331) is connected to the bottom of the second mounting plate (32), and the lower connecting plate (332) is connected to the inner wall of the rotating cavity (311). Multiple ball bearings (333) are arranged in a ring between the upper connecting plate (331) and the lower connecting plate (332).

3. The low-voltage switchgear according to claim 2, characterized in that: The upper connecting plate (331) and the lower connecting plate (332) have grooves (334) on their surfaces facing each other, and the surfaces of the two grooves (334) are in contact with the surface of the ball (333).

4. A low-voltage switchgear according to claim 2, characterized in that: The first mounting plate (31) and the second mounting plate (32) are respectively provided with a first rotating hole (312) and a second rotating hole (321). The upper connecting plate (331) and the lower connecting plate (332) are both provided with a third rotating hole (335). A rotating shaft (34) is connected inside the first rotating hole (312), the second rotating hole (321) and the third rotating hole (335).

5. A low-voltage switchgear according to claim 1, characterized in that: The first mounting plate (31) and the second mounting plate (32) have multiple mounting holes (35) on their surfaces.

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