Anti-misplug structure for drawer of low-voltage cabinet
By using a combination of a first anti-misinsertion insert and a second anti-misinsertion insert in the low-voltage cabinet, the problem of mixed assembly of low-voltage drawer units is solved, ensuring the correct installation and safety of the drawer units and reducing the risk of misjudgment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHUANKAI ELECTRIC
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-12
Smart Images
Figure CN224233205U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transformer technology, and specifically provides a structure for preventing misinsertion of a low-voltage switchgear drawer. Background Technology
[0002] In the application of low-voltage switchgear, the number of drawer units increases with the number of circuits. With a large number of drawer units, the problem of mixed installation can easily occur during assembly. When drawer units are mixed—that is, one drawer unit is installed in the position of another drawer unit—it can lead to a series of serious circuit problems, such as circuit malfunction, signal feedback errors, and malfunction or failure of protection devices. These problems not only affect the normal power supply of the power system but may also cause safety accidents, resulting in economic losses and social impact.
[0003] To prevent drawer units from being mixed up, existing technology usually uses a latch and a socket to match. A latch is set on the drawer unit and a socket is set on the cabinet. When the latch can be accurately inserted into the socket, it means that the drawer unit is installed in the correct position, thus preventing drawer units from being mixed up.
[0004] However, the installation precision requirements for the latch and the socket are high, necessitating that the axes of the socket and the latch be parallel. When the axes of the socket and the latch are not parallel, the drawer unit will encounter significant resistance when installed into the cabinet, preventing the drawer unit from being installed. This leads the operator to believe that the drawer unit is incorrectly positioned, thus affecting the installation process. Especially over long-term use, the latch is prone to deformation, making it difficult to insert into the socket, leading the operator to believe that the drawer unit is incorrectly positioned, thus affecting the installation process. Therefore, the existing technology that uses the latch and socket to prevent errors is prone to uneven installation due to precision issues with the latch and socket, causing operator misjudgment and affecting the installation of the drawer unit. Utility Model Content
[0005] This utility model provides a low-pressure cabinet drawer anti-misinsertion structure to solve the problem that the existing identification mechanism formed by the cooperation of the pin and the socket has high precision requirements and is prone to pin failure to be smoothly inserted into the socket due to precision issues, which may lead to operator misjudgment and affect the installation of the drawer unit.
[0006] The technical solution of this utility model is as follows:
[0007] A low-voltage cabinet drawer anti-misinsertion structure includes a cabinet body and at least two drawer units. The cabinet body is used to install each drawer unit and also includes a first anti-misinsertion insert and a second anti-misinsertion insert. The first anti-misinsertion insert is connected to the cabinet body, and the second anti-misinsertion insert is connected to the drawer unit. The positions of the first and second anti-misinsertion inserts correspond. The first anti-misinsertion insert is provided with a first stop and a first clearance position, and the second anti-misinsertion insert is provided with a second stop and a second clearance position. The dimensions and positions of the first stop and the second clearance position correspond, and the dimensions and positions of the second stop and the first clearance position correspond, so that when the drawer unit is inserted into the drawer unit, the first stop passes through the second clearance position, and the second stop passes through the first clearance position.
[0008] In this solution, when the drawer unit is installed into a cabinet cell, it is sufficient to ensure that the drawer unit is installed correctly as long as the first stop does not collide with the second stop. In other words, if the first stop can pass through the second open space and the second stop can pass through the first open space, the drawer unit is confirmed to be installed in the correct cell. The first and second stops do not need to mate; if they collide, it indicates that the drawer unit is not installed correctly. Because the first and second stops do not mate, the required machining precision is low, avoiding situations where the drawer unit cannot be smoothly installed into the cabinet due to precision issues, and preventing operator misjudgment.
[0009] Since there are many drawer units, in order to solve the problem that different drawer units may be installed in the wrong position due to the existence of the same second anti-misinsertion insert, the first anti-misinsertion insert includes at least two first stops. The number of first empty spaces set in the second anti-misinsertion insert is the same as the number of first stops, and the position of each second empty space corresponds to the position of each first stop.
[0010] In this design, the more first stops and first gaps the first anti-misinsertion insert has, the more combinations can be formed between the first stops and first gaps. This allows for better coordination with the corresponding second anti-misinsertion inserts, ensuring that each drawer unit has a different second anti-misinsertion insert. When the second anti-misinsertion inserts on each drawer unit are different, the corresponding first anti-misinsertion inserts on the cabinet will also be different. Therefore, if a drawer unit is inserted incorrectly, the second stop of the second anti-misinsertion insert on the drawer unit will collide with the first stop, preventing the second stop from moving further and thus preventing the drawer unit from being inserted further. Therefore, by setting more first stops and first gaps on the first anti-misinsertion insert, and through the combinations of the first stops and first gaps, the problem of identical first anti-misinsertion inserts appearing in different drawer units due to a large number of drawer units can be solved.
[0011] To address the issue of mixed installation of drawer units due to their large number, the following solution can be implemented: at least two first anti-misinsertion tabs are provided, and a second anti-misinsertion tab is provided at the corresponding position of each drawer unit and each first anti-misinsertion tab.
[0012] In this solution, more first anti-misinsertion tabs are installed on the cabinet body and more second anti-misinsertion tabs are installed on the drawer units. By arranging and combining more first anti-misinsertion tabs with more second anti-misinsertion tabs, and by combining the different combinations of each first anti-misinsertion tab itself, each drawer unit can also have different arrangement and combination methods, thus avoiding the mixing of different drawer units.
[0013] To facilitate the installation of the second anti-misinsertion insert, the second anti-misinsertion insert is connected to the side of the drawer unit, and the first anti-misinsertion insert is connected to the cabinet body.
[0014] In this design, the second anti-misinsertion insert is positioned on the side of the drawer unit, allowing it to be located in the middle of the side of the drawer unit. This arrangement ensures that the second anti-misinsertion insert passes the position of the first anti-misinsertion insert before the drawer unit is fully inserted, thus preventing the drawer unit from being inserted into the wrong position.
[0015] Preferably, the first stop is a long strip-shaped object facing the drawer unit, and the second stop is a long strip-shaped object facing the cabinet body.
[0016] In this design, the first and second stops are designed as long strips, which ensures that the first and second stops have a sufficiently large overlapping area and avoids the problem of deformation of the first and second stops, which would prevent them from functioning as identification devices.
[0017] To facilitate the fixing of the first anti-misinsertion insert and the second anti-misinsertion insert, the first anti-misinsertion insert is provided with a first fixing hole, and / or the second anti-misinsertion insert is provided with a second fixing hole.
[0018] In this solution, the first anti-misinsertion insert can be fixed to the cabinet by passing a screw through the first fixing hole, and the second anti-misinsertion insert can be fixed to the drawer unit by passing a screw through the second fixing hole.
[0019] Preferably, the first anti-misinsertion insert includes a first fixing part, and the first fixing hole is disposed in the fixing part; and / or, the second anti-misinsertion insert includes a second fixing part, and the second fixing hole is disposed in the second fixing part.
[0020] In this solution, separate first and second fixing parts are provided, and the first fixing hole is provided in the first fixing part. This can prevent the first fixing hole from reducing the strength of the first stop. Similarly, the second fixing hole is provided in the second fixing part. This can prevent the second fixing hole from reducing the strength of the second stop.
[0021] Since the second anti-misinsertion insert and the first anti-misinsertion insert are different for different drawer units, the cost of manufacturing each first anti-misinsertion insert and the second anti-misinsertion insert separately is high. To reduce costs, the first stop is detachably connected to the first fixing part, and / or the second stop is detachably connected to the second fixing part.
[0022] In this solution, since both the first and second stop components are detachable, different first and second anti-misinsertion inserts can be formed simply by installing the first and second stop components in different positions. This method allows for arbitrary combination of the detachable first or second stop components without the need for separate processing. Compared to producing each type of first and second anti-misinsertion insert separately, this solution can reduce costs.
[0023] Preferably, the first fixing part and the first stop are integrally formed, and the second fixing part and the second stop are integrally formed.
[0024] The beneficial effects of this utility model are:
[0025] This invention uses a first anti-misinsertion insert and a second anti-misinsertion insert to identify the drawer unit. As long as the first stop and the second stop do not collide during the movement of the drawer, it can be determined whether the drawer unit is installed in the correct position. The cooperation between the first anti-misinsertion insert and the second anti-misinsertion insert does not require high precision, which can avoid the problem of uneven installation of the drawer unit into the cabinet due to deformation and low cooperation precision, which may cause misjudgment by the operator. Attached Figure Description
[0026] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a top sectional view of the present invention;
[0028] Figure 2 This is a front view of the second anti-misinsertion insert passing through the first anti-misinsertion insert;
[0029] Figure 3 This is the left view of the first anti-misinsertion insert;
[0030] Figure 4 This is a front view of another embodiment of the first anti-misinsertion insert.
[0031] In the above figures, the corresponding reference numerals are as follows:
[0032] 1. Cabinet body; 2. Drawer unit; 3. First anti-misinsertion insert; 4. Second anti-misinsertion insert; 5. Guide rail; 6. Cell unit; 31. First fixing part; 32. First stop; 33. First empty space; 34. First fixing hole; 35. Screw; 41. Second fixing part; 42. Second stop; 43. Second empty space. Detailed Implementation
[0033] The technical solution of this utility model will be clearly and completely described in conjunction with the accompanying drawings and through specific embodiments.
[0034] Example 1:
[0035] like Figure 1 As shown, this embodiment provides a low-voltage cabinet drawer anti-misinsertion structure, applied to the cabinet body 1 and drawer unit 2 of a low-voltage cabinet. The low-voltage cabinet has several cell units 6 for storing the drawer units 2. The low-voltage cabinet includes several drawer units 2, and each drawer unit 2 is inserted into its respective cell unit 6. Each drawer unit 2 corresponds one-to-one with each cell unit 6. Each drawer unit 2 has a second anti-misinsertion insert 4 on its side, and the cabinet body 1 has a first anti-misinsertion insert 3. Each first anti-misinsertion insert 3 corresponds to the position of each second anti-misinsertion insert 4. The first anti-misinsertion insert 3 includes a first fixing part 31, a first stop 32, and a first empty space 33. The second anti-misinsertion insert 4 includes a second fixing part 41, a second stop 42, and a second empty space 43.
[0036] The second anti-misinsertion insert 4 is located on the side of the drawer unit 2, and the first anti-misinsertion insert 3 is located on the cabinet body 1. The first anti-misinsertion insert 3 and the second anti-misinsertion insert 4 are at the same height.
[0037] The cell 6 is equipped with guide rails 5 or slides to constrain the movement direction of drawer unit 2, so that drawer unit 2 can only move inward or outward in cell 6. The guide rails 5 or slides prevent drawer unit 2 from moving to the sides, ensuring that drawer unit 2 and cabinet 1 do not squeeze the first anti-misinsertion insert 3 or the second anti-misinsertion insert 4.
[0038] like Figure 2As shown, one side of the first fixing part 31 is a mating area, and the first stop 32 is connected to the mating area of the first fixing part 31. The mating area of the first fixing part 31 is also provided with a first gap 33, which refers to the blank area in the mating area of the first fixing part 31 that is adapted to the second stop 42 at the corresponding position of the second anti-misinsertion insert 4. One side of the second fixing part 41 is a mating area, and the second stop 42 is connected to the mating area of the second fixing part 41. The mating area of the second fixing part 41 is also provided with a second gap 43, which refers to the blank area in the mating area of the second fixing part 41 that is the same width as or larger than the width of the first stop 32 at the corresponding position of the first anti-misinsertion insert 3. The first gap 33 of the first anti-misinsertion insert 3 is used for the passage of the second stop 42 at the corresponding position of the second anti-misinsertion insert 4, and the second gap 43 of the second anti-misinsertion insert 4 is used for the passage of the first stop 32 at the corresponding position of the first anti-misinsertion insert 3.
[0039] When the widths of the first stop 32 and the second stop 42 are the same, the widths of the first clearance 33 and the second clearance 43 are also the same. When the widths of the first stop 32 and the second stop 42 are different, the width of the second clearance 43 is adapted to the width of the first stop 32, and the width of the first clearance 33 is adapted to the width of the second stop 42. This allows the first stop 32 to pass through the second clearance 43, and the second stop 42 to pass through the first clearance 33.
[0040] During implementation, to prevent the drawer unit 2 from failing to smoothly fit into the cabinet unit 6 due to deformation of the first stop 32 or the second stop 42, the width of the second clearance 43 is 3-6mm larger than the width of the corresponding first stop 32. Similarly, the width of the first clearance 33 is 3-6mm larger than the width of the corresponding second stop 42.
[0041] The first stop 32 is a long strip extending from the first fixing part 31 toward the drawer unit 2. For example, the first anti-misinsertion insert 3 is made of a metal plate, the first fixing part 31 is a rectangular metal plate, the mating area is one side of the metal plate, and the first stop 32 is a rectangular strip of metal cut from the metal plate. Similarly, the second anti-misinsertion insert 4 is also made of a metal plate. During installation, the metal plate is attached to the cabinet 1. If the metal plate is attached to the front side of the cabinet 1, the metal plate and the metal strip are in the same plane, that is, the first fixing part 31 and the first stop 32 are parallel; if the metal plate is attached to the left and right sides of the cabinet 1, the metal plate is parallel to the side of the cabinet unit 1 and perpendicular to the metal strip, that is, the first fixing part 31 and the first stop 32 are perpendicular.
[0042] like Figure 3As shown, for ease of installation, the first fixing part 31 is provided with first fixing holes 34, and the number of first fixing holes 34 is greater than two. The second fixing part 41 is provided with second fixing holes, and the number of second fixing holes is greater than two. Screw holes can be provided on the cabinet body 1 and the drawer unit 2. Screws pass through the first fixing holes 34 and connect with the screw holes on the cabinet body 1 to fix the first anti-misinsertion insert 3 to the cabinet body 1. Screws pass through the second fixing holes and connect with the screw holes on the drawer unit 2 to fix the second anti-misinsertion insert 4 to the drawer unit 2.
[0043] The length direction of the first stop 32 is perpendicular to the side of the drawer unit 2, and the length direction of the second stop 42 is also perpendicular to the side of the drawer unit 2. The first stop 32 and the second stop 42 are arranged in parallel, which increases the contact area between the first stop 32 and the second stop 42. This allows the force to be dispersed when the second stop 42 contacts the first stop 32, preventing excessive pressure on the first stop 32 and the second stop 42 from deforming.
[0044] By making the first stop 32 and the second stop 42 elongated, the overlapping area of the first stop 32 and the second stop 42 is increased. This ensures that the first stop 32 can block the second stop 42 if the drawer unit 2 is installed incorrectly. When the first stop 32 contacts the second stop 42, the first stop 32 prevents the second stop 42 from moving further, thus preventing the drawer unit 2 from being inserted into the cabinet 1. This allows the operator to determine that the drawer unit 2 is not in the correct position.
[0045] The cabinet 1 can accommodate multiple drawer units 2, each drawer unit 2 equipped with a second anti-misinsertion insert 4. The second anti-misinsertion inserts 4 installed on each drawer unit 2 are different, differing only in the number and position of the second stops 42. For example, one second anti-misinsertion insert 4 may have a mating area with space for four second stops 42, with three second stops 42 positioned on the mating area and a second gap 43 between the top two second stops 42. Another second anti-misinsertion insert 4 may have a mating area with space for four second stops 42, with two second stops 42 positioned side-by-side at the bottom of the mating area and two second gaps 43 at the top. Different arrangements of the second stops 42 and the second gaps 43 can create different second anti-misinsertion inserts 4. Different second anti-misinsertion inserts 4 result in different corresponding first anti-misinsertion inserts 3.
[0046] It should be noted that the two second empty spaces 43 refer to the blank areas that allow the two first stops 32 to pass through.
[0047] The first empty space 33 can be formed by cutting directly during manufacturing.
[0048] Alternatively, when manufacturing the first anti-misinsertion insert 3 and the second anti-misinsertion insert 4, the first anti-misinsertion insert 3 and the second anti-misinsertion insert 4 can be manufactured to the same shape without providing a first gap 33 or a second gap 43. When needed, some of the first stop 32 or the second stop 42 can be cut off as required to form the first gap 33 and the second gap 43. This method can reduce the manufacturing cost of the first anti-misinsertion insert 3 and the second anti-misinsertion insert 4.
[0049] Example 2:
[0050] This embodiment two provides a low-pressure cabinet drawer anti-misinsertion structure. Unlike embodiment one, the drawer unit 2 of this embodiment two is provided with at least two second anti-misinsertion inserts 4.
[0051] Each of the second anti-misinsertion inserts 4 can be located on the same side of the drawer unit 2, or they can be located on both sides of the drawer unit 2 respectively.
[0052] When two or more second anti-misinsertion inserts 4 are provided on the same side of the drawer unit 2, each second anti-misinsertion insert 4 is arranged in the vertical direction.
[0053] Example 3:
[0054] This embodiment three provides a low-pressure cabinet drawer anti-misinsertion structure. Unlike embodiment one, the first stop 32 and the second stop 42 in this embodiment three are detachable.
[0055] The first stop 32 is a metal rod with an internal thread at its end. A screw 35 is welded to the first fixing part 31, and the first stop 32 and the screw 35 are detachably connected. The second stop 42 is a metal rod with an internal thread at its end. A screw 35 is welded to the second fixing part 41, and the second stop 42 and the screw 35 are detachably connected.
[0056] The number of screws 35 on the first fixing part 31 is the sum of the number of the first empty positions 33 and the number of the first stop members 32, and the screws 35 are arranged in a straight line. The length of the screws 35 is much shorter than the length of the first stop members 32. For example, the screws 35 are 5mm long and the first stop members 32 are 2cm long. The first empty positions 33 are the locations on the first fixing part 31 where there are no screws 35 connected to the first stop members 32.
[0057] Similarly, the number of screws 35 on the second fixing part 41 is the sum of the number of the second empty space 43 and the number of the second stop 42, and each screw 35 is arranged in a straight line.
Claims
1. A low-voltage cabinet drawer anti-misinsertion structure, comprising a cabinet body (1) and at least two drawer units (2), wherein the cabinet body (1) is used to install each drawer unit (2), characterized in that, It also includes a first anti-misinsertion insert (3) and a second anti-misinsertion insert (4). The first anti-misinsertion insert (3) is connected to the cabinet (1), and the second anti-misinsertion insert (4) is connected to the drawer unit (2). The positions of the first anti-misinsertion insert (3) and the second anti-misinsertion insert (4) are corresponding. The first anti-misinsertion insert (3) is provided with a first stop (32) and a first empty space (33). The second anti-misinsertion insert (4) is provided with a second stop (42) and a second empty space (43). The size and position of the first stop (32) and the second empty space (43) are corresponding. The size and position of the second stop (42) and the first empty space (33) are corresponding, so that when the drawer unit (2) is inserted into the cell (6), the first stop (32) passes through the second empty space (43) and the second stop (42) passes through the first empty space (33).
2. The low-voltage cabinet drawer anti-misinsertion structure according to claim 1, characterized in that, The first anti-misinsertion insert (3) includes at least two first stops (32), and the number of first empty spaces (33) set in the second anti-misinsertion insert (4) is the same as the number of first stops (32), and the position of each second empty space (43) corresponds to the position of each first stop (32).
3. The low-voltage cabinet drawer anti-misinsertion structure according to claim 1, characterized in that, It includes at least two first anti-misinsertion inserts (3), and a second anti-misinsertion insert (4) is provided at the corresponding position of each drawer unit (2) and each first anti-misinsertion insert (3).
4. The low-voltage cabinet drawer anti-misinsertion structure according to claim 1, characterized in that, The second anti-misinsertion insert (4) is connected to the side of the drawer unit (2), and the first anti-misinsertion insert (3) is connected to the cabinet (1).
5. The low-voltage cabinet drawer anti-misinsertion structure according to claim 1, characterized in that, The first stop (32) is a long strip-shaped object facing the drawer unit (2), and the second stop (42) is a long strip-shaped object facing the cabinet (1).
6. The low-voltage cabinet drawer anti-misinsertion structure according to claim 5, characterized in that, The first stop (32) is parallel to the second stop (42).
7. The low-voltage cabinet drawer anti-misinsertion structure according to claim 1, characterized in that, The first anti-misinsertion insert (3) is provided with a first fixing hole (34), and / or the second anti-misinsertion insert (4) is provided with a second fixing hole.
8. The low-voltage cabinet drawer anti-misinsertion structure according to claim 7, characterized in that, The first anti-misinsertion insert (3) includes a first fixing part (31), and the first fixing hole (34) is disposed in the fixing part, and / or the second anti-misinsertion insert (4) includes a second fixing part (41), and the second fixing hole is disposed in the second fixing part (41).
9. The low-voltage cabinet drawer anti-misinsertion structure according to claim 8, characterized in that, The first stop (32) is detachably connected to the first fixing part (31), and / or the second stop (42) is detachably connected to the second fixing part (41).
10. The low-voltage cabinet drawer anti-misinsertion structure according to claim 8, characterized in that, The first fixing part (31) and the first stop (32) are integrally formed, and the second fixing part (41) and the second stop (42) are integrally formed.