An electrical cabinet that is easy to maintain

Abstract

This invention relates to an electrical cabinet that facilitates maintenance, comprising: a housing in the shape of a cuboid, wherein the housing has a main opening on one side along its width and side openings on both sides along its length; a cabinet door installed at the main opening; a side door installed at the side opening; a mounting bracket divided into multiple mounting units along the length of the housing, the mounting units being used to mount electrical components; and a linkage mechanism acting between the side door, the mounting bracket, and the housing, enabling the side door to have a composite motion state in which it moves simultaneously along the length and width of the housing. When the side door moves away from the housing, it is open and the distance between two adjacent mounting units increases; when the side door moves closer to the housing, it is closed and the distance between two adjacent mounting units decreases, thus solving the problem of inconvenient maintenance caused by the compact arrangement of components inside the electrical cabinet.

Description

Technical Field

[0001] This invention relates to the field of electrical cabinet technology, and in particular to an electrical cabinet that is easy to maintain. Background Technology

[0002] Electrical cabinets are cabinets used to protect electrical appliances so that they can operate normally. They are widely used in electrical control systems across various industries.

[0003] The overall configuration design of the electrical cabinet involves dividing the control system into several components, each called a part, based on the working principle and control requirements of the electrical schematic diagram. Then, according to the complexity of the electrical control cabinet, each part is further divided into several electrical components. The overall design of the electrical cabinet aims to centralize the entire electrical control system; therefore, the components are arranged compactly, which can be inconvenient for installation and maintenance. Summary of the Invention

[0004] This invention addresses the technical problem in the prior art: the compact arrangement of components makes installation and maintenance inconvenient for workers. It provides an electrical cabinet that is easy to inspect and repair.

[0005] The technical solution of this invention to solve the above-mentioned technical problems is as follows: An electrical cabinet that is easy to maintain, comprising:

[0006] The shell is rectangular in shape, with a main opening on one side along its width and side openings on both sides along its length.

[0007] The cabinet door is installed at the main opening and has an open and closed state.

[0008] A side door is installed at the side opening and has an open and closed state.

[0009] The mounting bracket is divided into multiple mounting units along the length of the housing, and the mounting units are used to install electrical components.

[0010] The linkage mechanism includes a sliding pair A, a sliding pair B, a multi-stage scissor hinge joint, and a linkage assembly. The sliding pair A includes a guide rail a and a slide rod that slide against each other. The guide rail a is fixedly installed on the inner surface of the housing, and its guide is parallel to the length direction of the housing. The sliding pair B includes a guide rail b and a slide rod that slide against each other. The guide rail b is parallel to the width direction of the housing. The guide rail b is fixedly connected to the slide rod a, and the slide rod b is fixedly connected to the side door. The multi-stage scissor hinge joint includes multiple scissor rod units arranged along the length direction of the housing. Any two adjacent scissor rod units are connected end to end, and an installation unit is installed at the connection point of any two adjacent scissor rod units. The multi-stage scissor hinge joint is installed on the guide rail b. The linkage assembly includes a rod. One end of the rod is hinged to the inner surface of the housing on the other side in the width direction, and the other end of the rod is hinged to the side door. The linkage mechanism acts between the side door, the mounting bracket, and the housing, so that the side door has a composite motion state in which it moves simultaneously along the length and width directions of the housing. When the side door moves away from the housing, the side door is open and the distance between two adjacent mounting units increases. When the side door moves closer to the housing, the side door is closed and the distance between two adjacent mounting units decreases.

[0011] As a further optimization of the present invention, the linkage mechanism further includes a limiting component, which includes a guide rail C, the guide rail C being parallel to the width direction of the housing, the guide rail C being fixedly installed on the inner surface of the housing on the other side along its width direction, a bearing A being slidably fitted on the guide rail C, and a multi-stage scissor-type hinge joint being mounted on the bearing A at its center along the length direction of the housing.

[0012] As a further optimization of the present invention, there are two sliding pairs A arranged symmetrically on both sides of the housing along its width direction. The mounting unit includes a plate, the plane of which is parallel to the length direction of the housing and the width direction of the housing. The two ends of the plate along the width direction of the housing are respectively placed on the two sliding pairs A.

[0013] As a further optimization of the present invention, the guide rail a and the slide rod a are arranged along the width direction of the housing, and the upper surface of the guide rail a and the upper surface of the slide rod a are coplanar.

[0014] As a further optimization of the present invention, the guide rail b is provided with sliding grooves b1 and b2 on both sides along the length of the housing. A slider is slidably disposed in the sliding groove b1. The slider is connected to a multi-stage scissor hinge pair through a shaft pin. The sliding groove b2 is slidably engaged with the b sliding rod.

[0015] As a further optimization of the present invention, the shear bar unit includes a connecting rod, a b bearing, a c bearing, and a d guide rail that slides with the c bearing. One end of the connecting rod is connected to the b bearing, and the other end of the connecting rod is connected to the c bearing. The b bearing and the d guide rail are respectively mounted on the plate.

[0016] As a further optimization of the present invention, the housing is provided with a notch on the other side along its width direction, and the notch is used for the slide bar b to pass through.

[0017] As a further optimization of the present invention, the side plate is provided with an extension corresponding to the position of the gap, the shape of the extension matches the gap, and when the side door is closed, the extension fills the gap.

[0018] The beneficial effects of this invention are:

[0019] 1. In this technical solution, the mounting frame is divided into multiple mounting units, i.e., the mounting frame adopts a split structure. Therefore, the spacing between adjacent mounting units can be adjusted. Based on this, a linkage mechanism is designed. The linkage mechanism acts between the side door, the mounting frame, and the housing. As the side door is opened, the spacing between two adjacent mounting units automatically increases, and some mounting units extend out of the housing through the side opening, providing more operating space for operators to assemble electrical components on the mounting units and to inspect and maintain the electrical components. After the operator finishes working, the side door is closed. At this time, the spacing between two adjacent mounting units will gradually decrease as the side door is closed until all the mounting units are inside the housing. Specifically, the point where the rod and the inner surface of the housing on the other side of its width direction are hinged is a fixed hinge point. The hinge between the rod and the side door, and the side door slidingly engaging with the b-slide rod and the b-guide rail, allows the side door to act as a linear motion point. The b-guide rail provides guidance for this linear motion point, and the guide of the b-guide rail is parallel to the width direction of the housing. Therefore, when the side door is pushed along the b-guide rail, it has a composite state of moving simultaneously along the width direction and the length direction of the housing. The b-guide rail moves along the length direction of the housing along with the side door. The multi-stage scissor hinge joint is installed on the b-guide rail, and the multi-stage scissor hinge joint compresses and extends with the movement of the b-guide rail. Since any two adjacent scissor rod units are connected end to end, and an installation unit is installed at the connection point of any two adjacent scissor rod units, the distance between adjacent installation units decreases as the multi-stage scissor hinge joint is compressed; and the distance between adjacent installation units increases as the multi-stage scissor hinge joint extends.

[0020] 2. In this technical solution, the side doors located on both sides of the shell length direction open or close simultaneously, thereby improving maintenance efficiency. Because guide rail c restricts the movement of the center position of the multi-stage scissor hinge joint along the shell length direction, the two ends of the multi-stage scissor hinge joint move symmetrically from the center position to both sides along the shell length direction. When one side door on one side of the shell length direction is pushed along guide rail b, the two ends of the multi-stage scissor hinge joint move symmetrically from the center position to both sides along the shell length direction, thereby driving the other side door on the other side of the shell length direction to move symmetrically, thus achieving simultaneous opening or closing of the side doors on both sides of the shell length direction.

[0021] 3. In this technical solution, since a sliding groove b1 is provided on one side of the b-guide rail along the length of the housing, and a slider is slidably disposed in the sliding groove b1, the slider is connected to a multi-stage scissor-type hinge joint through a shaft pin. Therefore, the multi-stage scissor-type hinge joint can move along the guide of the b-guide rail. After the side door is opened, the distance between two adjacent installation units increases. Based on this, the multi-stage scissor-type hinge joint can slide along the b-guide rail, thereby driving the installation unit located inside the housing to extend out of the housing through the main opening. Attached Figure Description

[0022] Figure 1 This is a perspective view of the electrical cabinet according to Embodiment 1 of the present invention;

[0023] Figure 2 This is a perspective view of the linkage mechanism in Embodiment 1 of the present invention;

[0024] Figure 3 This is a schematic cross-sectional view of sliding pair A in Embodiment 1 of the present invention;

[0025] Figure 4 This is a bottom view of the linkage mechanism in Embodiment 1 of the present invention;

[0026] Figure 5 This is a perspective view of the housing according to Embodiment 1 of the present invention;

[0027] Figure 6 for Figure 5 Enlarged view at point X;

[0028] Figure 7 This is a perspective view of the side door of Embodiment 1 of the present invention;

[0029] Figure 8 for Figure 7 Enlarged view at point X;

[0030] Figure 9 This is a first schematic diagram of the connection between the limiting component and the multi-stage scissor hinge pair in Embodiment 2 of the present invention;

[0031] Figure 10This is a second schematic diagram showing the connection between the limiting component and the multi-stage scissor hinge pair in Embodiment 2 of the present invention.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Housing; 11. Opening; 2. Cabinet door; 3. Side door; 31. Extension; 4. Mounting bracket; 41. Mounting unit; 5. Linkage mechanism; 51. A sliding pair; 511. a guide rail; 512. a slide rod; 52. B sliding pair; 521. b guide rail; 522. b slide rod; 53. Linkage assembly; 531. d bearing; 532. Rod; 533. e bearing; 54. Multi-stage scissor hinge pair; 541. b bearing; 542. c bearing; 543. d guide rail; 55. Limiting assembly; 551. c guide rail; 552. a bearing. Detailed Implementation

[0034] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments described are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0035] Example 1

[0036] like Figures 1 to 2As shown, an electrical cabinet that is easy to maintain includes a housing 1, a cabinet door 2, a side door 3, a mounting bracket 4, and a linkage mechanism 5. In this embodiment, the housing 1 is rectangular in shape. The housing 1 has a main opening on one side along its width and side openings on both sides along its length. A cabinet door 2 is hinged to the main opening and has an open and closed state. A side door 3 is installed at the side opening and also has an open and closed state. A mounting bracket 4 is divided into multiple mounting units 41 along the length of the housing 1. The mounting units 41 are used to mount electrical components. A linkage mechanism 5 includes an A sliding pair 51, a B sliding pair 52, a multi-stage scissor hinge pair 54, and a linkage assembly 53. The A sliding pair 51 includes a guide rail 511 and a slide rod 512 that slide against each other. The a guide rail 511 is fixedly installed on the inner surface of the housing 1, and its guide is parallel to the length of the housing 1. The B sliding pair 52 includes a guide rail 521 and a slide rod 522 that slide against each other. The guide rail 521 is parallel to the width direction of the housing 1. The guide rail 521 is fixedly connected to the slide bar 512. The slide bar 522 is fixedly connected to the side door 3. The multi-stage scissor hinge 54 includes multiple scissor units arranged along the length direction of the housing 1. Any two adjacent scissor units are connected end to end. An installation unit 41 is installed at the connection point of any two adjacent scissor units. The multi-stage scissor hinge 54 is installed on the guide rail 521. The linkage assembly 53 includes a rod 532. One end of the rod 532 is hinged to the inner surface of the housing 1 on the other side of its width direction. The other end of the rod 532 is hinged to the side door 3. The linkage assembly 53 is implemented as follows: one end of the rod 532 is equipped with an e-bearing 533, which is fixedly installed on the inner surface of the housing 1 on the other side of its width direction; the other end of the rod 532 is equipped with a d-bearing 531, which is fixedly installed on the side door 3. The linkage mechanism 5 acts between the side door 3, the mounting bracket 4 and the housing 1, so that the side door 3 has a compound motion state in which it moves simultaneously along the length and width directions of the housing 1. When the side door 3 moves away from the housing 1, the side door 3 is open and the distance between two adjacent mounting units 41 increases. When the side door 3 moves closer to the housing 1, the side door 3 is closed and the distance between two adjacent mounting units 41 decreases.

[0037] To facilitate understanding, the principle of the linkage mechanism 5 is explained here: The point where the rod 532 is hinged to the inner surface of the housing 1 on the other side of its width direction is a fixed hinge point. The rod 532 is hinged to the side door 3, and the side door 3 is slidably engaged with the b guide rail 521 through the b slide rod 522. Therefore, the side door 3 can be used as a linear motion point, and the b guide rail 521 provides guidance for this linear motion point. The guide of the b guide rail 521 is parallel to the width direction of the housing 1. Therefore, when the side door 3 is pushed to move along the b guide rail 521, the side door 3 has the ability to move simultaneously along the width direction of the housing 1 and along the width direction of the housing 1. In a combined state of movement along the length direction, guide rail 521 moves along the length direction of housing 1 with side door 3, while multi-stage scissor hinge joint 54 is installed on guide rail 521. Multi-stage scissor hinge joint 54 compresses and extends with the movement of guide rail 521. Since any two adjacent scissor units are connected end to end, an installation unit 41 is installed at the connection point of any two adjacent scissor units. As multi-stage scissor hinge joint 54 is compressed, the distance between adjacent installation units 41 decreases; as multi-stage scissor hinge joint 54 extends, the distance between adjacent installation units 41 increases.

[0038] When inspection and maintenance are required, open cabinet door 2 and side door 3. Cabinet door 2 is hinged to the main opening, and rotating cabinet door 2 will open and close it. The opening method of side door 3: For ease of description and understanding, one side of the housing 1 in the width direction is referred to as the front side, and the other side in the width direction as the rear side. Push side door 3 from the front to the rear side to open it. As side door 3 opens, the multi-stage scissor hinge joint 54 extends, and the distance between two adjacent mounting units 41 automatically increases until some mounting units 41 extend out of the housing 1 through the side opening, thus providing more operating space for operators to assemble electrical components on the mounting units 41 and to inspect and maintain them. After the operator finishes work, close side door 3. At this time, the distance between two adjacent mounting units 41 will gradually decrease as side door 3 closes until all mounting units 41 are inside the housing 1.

[0039] like Figure 1 As shown, in this embodiment, there are two sliding pairs 51 (A) symmetrically arranged on both sides of the housing 1 along its width direction. The mounting unit 41 includes a plate, the plane of which is parallel to the length direction of the housing 1 and the width direction of the housing 1. The two ends of the plate along the width direction of the housing 1 are respectively placed on the two sliding pairs 51 (A). Here, the sliding pairs 51 (A) are used for load-bearing, supporting the entire weight of the plate and the electrical components mounted on it. Based on this, as... Figure 3As shown, the guide rail 511 and the slide rod 512 are arranged along the width direction of the housing 1. The upper surface of the guide rail 511 is coplanar with the upper surface of the slide rod 512. The part of the mounting unit 41 that extends out of the housing 1 through the side opening rests on the upper surface of the slide rod 512.

[0040] In this embodiment, the b-guide rail 521 has grooves b1 and b2 on both sides along the length of the housing 1. A slider is slidably disposed in groove b1, and the slider is connected to the multi-stage scissor hinge 54 through a pin. The groove b2 is slidably engaged with the b-slide rod 522. Since the b-guide rail 521 has a groove b1 on one side along the length of the housing 1, and a slider is slidably disposed in groove b1, and the slider is connected to the multi-stage scissor hinge 54 through a pin, the multi-stage scissor hinge 54 can move along the guide of the b-guide rail 521. After the side door 3 is opened, the distance between two adjacent installation units 41 increases. Based on this, the multi-stage scissor hinge 54 can slide along the b-guide rail 521, thereby driving the installation unit 41 located inside the housing 1 to extend out of the housing 1 through the main opening. Furthermore, the increased distance between two adjacent installation units 41 can prevent collision with the housing 1.

[0041] like Figure 4 As shown, the connection between the mounting unit 41 and the shear bar unit is achieved as follows: the shear bar unit includes a connecting rod, a b bearing, a c bearing 542, and a d guide rail 543 that slides with the c bearing 542. There are two connecting rods, and their centers are hinged together by a pivot pin. One end of the connecting rod is connected to the b bearing, and the other end of the connecting rod is connected to the c bearing 542. The b bearing and the d guide rail 543 are respectively fixedly mounted on the plate.

[0042] like Figures 5 to 6 As shown, in order to open the side door 3 smoothly, in this embodiment, the housing 1 is provided with a notch 11 on the other side along its width direction, and the notch 11 is used for the slide bar 522 to pass through.

[0043] like Figures 7 to 8 As shown, in order to ensure the overall sealing of the electrical cabinet when the side door 3 is closed, an extension 31 corresponding to the position of the gap 11 is provided on the side plate. The shape of the extension 31 matches the gap 11. When the side door 3 is closed, the extension 31 fills the gap 11.

[0044] Example 2

[0045] The implementation method is basically the same as that of Embodiment 1. The improvement is that the linkage mechanism 5 further includes a limiting component 55. The limiting component 55 includes a c-guide rail 551. The guide of the c-guide rail 551 is parallel to the width direction of the housing 1. The c-guide rail 551 is fixedly installed on the inner surface of the housing 1 on the other side along its width direction. An a-bearing 552 is slidably fitted on the c-guide rail 551. A multi-stage scissor hinge 54 is installed on the a-bearing 552 at the center along the length direction of the housing 1.

[0046] When the multi-stage scissor hinge 54 includes an odd number of scissor bar units arranged along the length of the housing 1, such as Figure 9 As shown in the figure, there are three scissor units, and the center of the multi-stage scissor hinge 54 along the length of the housing 1 corresponds to the center of the middle scissor unit.

[0047] When the multi-stage scissor hinge 54 includes an even number of scissor bar units arranged along the length of the housing 1, such as Figure 9 As shown in the figure, there are four scissor units, and the center of the multi-stage scissor hinge 54 along the length of the housing 1 corresponds to the connection point of the two middle scissor units.

[0048] Because guide rail 551 restricts the movement of the center position of the multi-stage scissor hinge 54 along the length of housing 1, the two ends of the multi-stage scissor hinge 54 move symmetrically from the center position to both sides along the length of housing 1. When the side door 3 on one side of housing 1 is pushed to move along guide rail 521, the two ends of the multi-stage scissor hinge 54 move symmetrically from the center position to both sides along the length of housing 1, thereby driving the side door 3 on the other side of housing 1 to move symmetrically, so that the side doors 3 on both sides of housing 1 can be opened or closed simultaneously, thereby improving maintenance efficiency.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electrical cabinet that is easy to maintain, characterized in that, include: The shell is rectangular in shape, with a main opening on one side along its width and side openings on both sides along its length. The cabinet door is installed at the main opening and has an open and closed state. A side door is installed at the side opening and has an open and closed state. The mounting frame is divided into multiple mounting units along the length of the housing; The linkage mechanism includes a sliding pair A, a sliding pair B, a multi-stage scissor hinge joint, and a linkage assembly. The sliding pair A includes a guide rail and a slide rod that slide against each other. The guide rail a is fixedly installed on the inner surface of the housing, and its guide is parallel to the length direction of the housing. The sliding pair B includes a guide rail and a slide rod that slide against each other. The guide rail b is parallel to the width direction of the housing. The guide rail b is fixedly connected to the slide rod a, and the slide rod b is fixedly connected to the side door. The multi-stage scissor hinge joint includes multiple scissor rod units arranged along the length direction of the housing. Any two adjacent scissor rod units are connected end to end, and an installation unit is installed at the connection point of any two adjacent scissor rod units. The multi-stage scissor hinge joint is installed on the guide rail b. The linkage assembly includes a rod. One end of the rod is hinged to the inner surface of the housing on the other side along its width direction, and the other end of the rod is hinged to the side door.

2. The electrical cabinet for easy maintenance according to claim 1, characterized in that, The linkage mechanism also includes a limiting component, which includes a guide rail C. The guide rail C is parallel to the width direction of the housing. The guide rail C is fixedly installed on the inner surface of the housing on the other side along its width direction. A bearing A is slidably fitted on the guide rail C. A multi-stage scissor-type hinge joint is installed on the bearing A at the center along the length direction of the housing.

3. An electrical cabinet for easy maintenance according to claim 1 or 2, characterized in that, The A sliding pair consists of two parts and is symmetrically arranged on both sides of the housing along its width direction. The mounting unit includes a plate, the plane of which is parallel to the length and width directions of the housing. The two ends of the plate along the width direction of the housing are respectively placed on the two A sliding pairs.

4. The electrical cabinet for easy maintenance according to claim 3, characterized in that, The guide rail and the slide rod are arranged along the width of the housing, and the upper surface of the guide rail and the upper surface of the slide rod are coplanar.

5. An electrical cabinet for easy maintenance according to claim 1 or 2, characterized in that, The guide rail b has a sliding groove b1 and a sliding groove b2 on its two sides along the length of the housing, respectively. A slider is slidably arranged in the sliding groove b1. The slider is connected to a multi-stage scissor hinge through a shaft pin. The sliding groove b2 is slidably engaged with the b sliding rod.

6. An electrical cabinet for easy maintenance according to claim 1 or 2, characterized in that, The shear bar unit includes a connecting rod, a b bearing, a c bearing, and a d guide rail that slides with the c bearing. One end of the connecting rod is connected to the b bearing, and the other end of the connecting rod is connected to the c bearing. The b bearing and the d guide rail are respectively mounted on the plate.

7. An electrical cabinet for easy maintenance according to claim 1 or 2, characterized in that, The housing has a notch on the other side along its width, the notch being for the b-slide rod to pass through.

8. The electrical cabinet for easy maintenance according to claim 7, characterized in that, The side door is provided with an extension corresponding to the position of the gap. The shape of the extension matches the gap. When the side door is closed, the extension fills the gap.

Images