Drawer guard interlock device

Abstract

The present invention discloses an interlocking device for a drawer protective cover, and belongs to the technical field of low-voltage switch cabinets. It comprises: the interlocking device is installed on the drawer back plate of the drawer, the interlocking device comprises a static plug-in mounting plate arranged on one side of the drawer back plate, and a protective cover and an interlocking block respectively installed on both sides of the static plug-in mounting plate, the static plug-in mounting plate is provided with a long groove, the interlocking block is slidably installed in the long groove, the protective cover is provided with an interference portion protruding from the protective cover on the side facing the static plug-in mounting plate, and when the protective cover is installed on the static plug-in mounting plate, the interference portion of the protective cover can be inserted into the long groove and interfere with the interlocking block. The present invention can prevent maintenance personnel from accidentally contacting a live primary static plug-in by mechanically interlocking the drawer of the drawer-type switch cabinet with the drawer primary static plug-in, thereby ensuring the personal safety of the maintenance personnel and reducing the occurrence of electric shock accidents.

Description

Technical Field

[0001] The invention belongs to the technical field of low-voltage switch cabinets, and more specifically, relates to an interlocking device for a drawer protective cover. Background Art

[0002] Drawer-type switchgear is used in industrial and mining enterprises and high-rise buildings that require high power supply reliability, as equipment for centralized control distribution centers.

[0003] The drawer-type switch cabinet is a closed housing made of steel plates. The electrical components of each circuit are installed in a removable drawer to form a functional unit that can complete a certain type of power supply task. The functional unit of the drawer-type switch cabinet is separated from the busbar or cable by a grounded metal plate or a functional board made of plastic, forming three areas: busbar, functional unit and cable. The drawer-type switch cabinet has high reliability, safety and interchangeability, and is a relatively advanced switch cabinet. They are suitable for industrial and mining enterprises and high-rise buildings that require high power supply reliability as a centralized control distribution center.

[0004] But it has the following disadvantages in actual use:

[0005] In the prior art, after the external cable connection of the drawer-type switch cabinet is performed, if the staff forgets to cover the protective cover, the primary static plug-in will be exposed. After the power is supplied, the primary static plug-in will be energized for a long time, which will bring danger to subsequent maintenance personnel and pose a safety hazard; there is no interlock between the protective cover and the drawer of the traditional drawer-type switch cabinet, and the removal of the protective cover has nothing to do with the operating position of the drawer. The secondary static plug-in protective cover can also be removed when the drawer is energized. At the same time, because there are many load circuits in the drawer-type switch cabinet, maintenance personnel are prone to mistaken load circuits when disconnecting cables, which poses a risk of electric shock. Summary of the invention

[0006] In view of the problem of electric shock risk in existing drawer-type switch cabinets, the present invention provides a drawer protective cover interlocking device, which prevents maintenance personnel from accidentally touching the energized primary static plug-in by mechanically interlocking the drawer of the drawer-type switch cabinet and the drawer primary static plug-in, thereby ensuring the personal safety of the maintenance personnel and reducing the occurrence of electric shock accidents.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A drawer protective cover interlocking device, the interlocking device is installed on the drawer rear plate of the drawer, the interlocking device comprises a static plug-in mounting plate arranged on one side of the drawer rear plate, and a protective cover and an interlocking block respectively installed on both sides of the static plug-in mounting plate, the static plug-in mounting plate is provided with a long slot, the interlocking block is slidably installed in the long slot, the protective cover is provided with an interference portion protruding from the protective cover on the side facing the static plug-in mounting plate, when the protective cover is installed on the static plug-in mounting plate, the interference portion of the protective cover can be inserted into the long slot and interfere with the interlocking block to force the interlocking block to move in the long slot;

[0009] An interlocking avoidance groove is provided on the drawer rear plate, and the orthographic projection of the interlocking avoidance groove on the static plug-in installation plate at least partially overlaps with the long groove;

[0010] When the interlocking block moves in the long slot to the positive projection position of the interlocking avoidance slot on the static plug-in installation plate under the interference of the interference part of the protective cover, the interlocking block can at least partially sink into the interlocking avoidance slot.

[0011] Preferably, the interlocking block is arranged on a side of the static plug-in installation plate facing the drawer rear plate, and one end of the interlocking block is connected to the static plug-in installation plate through a spring;

[0012] When the protective cover is not installed, the interlocking block moves to the end away from the spring under the action of the spring force, and interference occurs between the drawer rear plate and the interlocking block;

[0013] After the protective cover is installed, the interlocking block is moved to the end close to the spring due to the pressure exerted by the interference part of the protective cover, and finally moves to the positive projection position of the interlocking avoidance groove on the static plug-in installation plate, so that the interlocking block can at least partially sink into the interlocking avoidance groove.

[0014] Preferably, the drawer rear panel is further provided with a pressure strip - that passes through the static plug-in installation plate, and when the protective cover is installed on the static plug-in installation plate, the pressure strip - can be inserted into the side wall of the protective cover and form an interference connection.

[0015] Preferably, the long slot includes a slot I and a slot II, wherein the slot I is arranged on the static plug-in installation plate, the slot II is arranged on the interlocking block, and the slot I and the slot II are substantially on the same horizontal line;

[0016] The interference portion of the protective cover can extend into slot I, and the interlocking block is limited on the static plug-in mounting plate by a screw arranged in slot II and fixedly connected to the static plug-in mounting plate, and can move relative to the static plug-in mounting plate to interfere with the interference portion of the protective cover extending into slot I.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] A drawer protection cover interlocking device of the present invention can prevent maintenance personnel from accidentally contacting a live primary static plug-in by mechanically interlocking the drawer of a drawer-type switch cabinet and the drawer primary static plug-in, thereby ensuring the personal safety of the maintenance personnel and reducing the occurrence of electric shock accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1~2 Schematic diagram of the structure of the drawer protective cover interlocking device in different viewing angles in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the position of the interlocking block when the protective cover is not installed;

[0021] Figure 4 This is a schematic diagram of the interference between the drawer back plate and the interlocking block when the protective cover is not installed;

[0022] Figure 5 Schematic diagram of the position of the interlocking block after the protective cover is installed;

[0023] Figure 6 Schematic diagram showing no interference between the drawer back plate and the interlocking block after the protective cover is installed;

[0024] Figure 7 It is a schematic diagram of the position between the drawer rear panel pressure strip and the protective cover when the drawer is in the working position;

[0025] In the figure: 1. Primary static plug-in; 2. Protective cover; 3. Interlocking block; 4. Spring; 5. Static plug-in installation plate; 6. Drawer back panel; 6-1. Drawer back panel pressure strip; 6-2. Interlocking avoidance groove; 7. Screw. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] like Figure 1~2As shown, the present invention provides a drawer protection cover interlocking device, and the interlocking device is installed on the drawer rear plate 6 of the drawer.

[0029] The interlocking device comprises a static plug-in installation plate 5 arranged on one side of the drawer rear plate 6 and a protective cover 2 and an interlocking block 3 respectively installed on both sides of the static plug-in installation plate 5 .

[0030] The static plug-in installation plate 5 is mainly used to install the primary static plug-in 1. The protective cover 2 is generally located on the same side of the static plug-in installation plate 5 as the primary static plug-in 1 to protect the primary static plug-in.

[0031] The static plug-in mounting plate 5 is provided with a long groove, and the interlocking block 3 is slidably installed in the long groove. The side of the protective cover 2 facing the static plug-in mounting plate 5 is provided with an interference portion protruding from the protective cover 2. When the protective cover 2 is installed on the static plug-in mounting plate 5, the interference portion of the protective cover 2 can be inserted into the long groove and interfere with the interlocking block 3 to force the interlocking block 3 to move in the long groove.

[0032] It is worth noting that in order to realize that the drawer can be inserted into the working position only when the protective cover 2 is installed in place, the interlocking block 3, as a "bridge" connecting the protective cover 2 and the drawer, must first ensure that the protective cover 2 can be linked with the interlocking block 3 when it is installed in place. The interference part of the protective cover 2 can be a push rod or any other shape, as long as it can ensure that the interlocking block 3 can be moved to the target position in the long slot when the protective cover 2 is installed.

[0033] An interlocking avoidance groove 6-2 is provided on the drawer rear plate 6, and the orthographic projection of the interlocking avoidance groove 6-2 on the static plug-in installation plate 5 at least partially overlaps with the long groove;

[0034] When the interlocking block 3 moves in the long groove to the positive projection position of the interlocking avoidance groove 6-2 on the static plug-in mounting plate 5 under the interference of the interference part of the protective cover 2, the interlocking block 3 can at least partially sink into the interlocking avoidance groove 6-2 so that there is no interference between the interlocking block 3 and the drawer back panel 6.

[0035] In a preferred embodiment, the interlocking block 3 is arranged on the side of the static plug-in installation plate 5 facing the drawer rear plate 6, and one end of the interlocking block 3 is connected to the static plug-in installation plate 5 through a spring;

[0036] When the protective cover 2 is not installed, the interlocking block 3 moves to the end away from the spring under the action of the spring force, and interference occurs between the drawer rear plate 6 and the interlocking block 3;

[0037] After the protective cover 2 is installed, the interlocking block 3 is moved to the end close to the spring due to the pressure exerted by the interference part of the protective cover 2, and finally moves to the positive projection position of the interlocking avoidance groove 6-2 on the static plug-in installation plate 5, so that the interlocking block 3 can at least partially sink into the interlocking avoidance groove 6-2.

[0038] In order to prevent the interlocking block 3 from falling off from the long slot and ensure the stability of the structure. In a preferred embodiment, the long slot includes slot I and slot II, wherein the slot I is arranged on the static plug-in mounting plate 5, the slot II is arranged on the interlocking block 3, and the slot I and slot II are substantially on the same horizontal line;

[0039] The interference portion of the protective cover 2 can extend into the groove I, and the interlocking block 3 is limited on the static plug-in mounting plate 5 by a screw arranged in the groove II and fixedly connected to the static plug-in mounting plate 5, and can move relative to the static plug-in mounting plate 5 to interfere with the interference portion of the protective cover 2 extending into the groove I.

[0040] In a preferred embodiment, the drawer back panel 6 is further provided with a pressure strip 6-1 penetrating the static plug-in installation plate 5, and when the protective cover 2 is installed on the static plug-in installation plate 5, the pressure strip 6-1 can be inserted into the side wall of the protective cover 2 and form an interference connection.

[0041] In a preferred embodiment, the static plug-in installation plate 5 is connected to the drawer rear plate 6 by a plurality of screws 7 .

[0042] refer to Figure 3 When the protective cover 2 is not installed, the interlocking block 3 moves to Figure 3 The left side of the middle long slot; reference Figure 4 At this time, the drawer back plate 6 interferes with the interlocking block 3, and the drawer cannot enter the working position, so that the static plug-in 1 is not powered.

[0043] refer to Figure 5 After the static plug-in mounting plate 5 is installed with the protective cover 2, the protective cover 2 pushes the interlocking block 3 to Figure 5 The right side position of the long slot is shown; refer to Figure 6 , the interlocking block 3 moves to the projection position of the interlocking avoidance groove, at this time the drawer back panel 6 does not interfere with the interlocking block 3), and the drawer can enter the working position.

[0044] The protective cover cannot be removed when the drawer is in the working position. Figure 7After the drawer enters the working position, the drawer back panel pressure strip 6-1 presses the protective cover 2. At this time, even if the screws 7 are removed, the protective cover 2 cannot be removed from the static plug-in installation plate 5. The protective cover 2 surrounds the primary static plug-in 1 from the left, right and top directions, thereby preventing the operability of live wiring. The safety of maintenance personnel is guaranteed.

[0045] A drawer protection cover interlocking device of the present invention can prevent maintenance personnel from accidentally contacting a live primary static plug-in by mechanically interlocking the drawer of a drawer-type switch cabinet and the drawer primary static plug-in, thereby ensuring the personal safety of the maintenance personnel and reducing the occurrence of electric shock accidents.

[0046] The examples described in the present invention are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should all fall within the protection scope of the present invention.

Claims

1. A drawer protection cover interlocking device, the interlocking device being mounted on a drawer rear panel (6) of the drawer, characterized in that: The interlocking device comprises a static plug-in mounting plate (5) arranged on one side of the drawer rear plate (6), and a protective cover (2) and an interlocking block (3) respectively mounted on both sides of the static plug-in mounting plate (5); the static plug-in mounting plate (5) is provided with a long slot, the interlocking block (3) is slidably mounted in the long slot, and the protective cover (2) is provided with an interference portion protruding from the protective cover (2) on the side facing the static plug-in mounting plate (5); when the protective cover (2) is mounted on the static plug-in mounting plate (5), the interference portion of the protective cover (2) can be inserted into the long slot and interfere with the interlocking block (3) to force the interlocking block (3) to move in the long slot; An interlocking avoidance groove (6-2) is provided on the drawer rear plate (6), and the orthographic projection of the interlocking avoidance groove (6-2) on the static plug-in installation plate (5) at least partially overlaps with the long groove; When the interlocking block (3) moves in the long groove to the positive projection position of the interlocking avoidance groove (6-2) on the static plug-in installation plate (5) under the interference of the interference part of the protective cover (2), the interlocking block (3) can at least partially sink into the interlocking avoidance groove (6-2).

2. The drawer protective cover interlocking device according to claim 1, characterized in that: The interlocking block (3) is arranged on a side of the static plug-in installation plate (5) facing the drawer rear plate (6), and one end of the interlocking block (3) is connected to the static plug-in installation plate (5) via a spring; When the protective cover (2) is not installed, the interlocking block (3) moves to an end away from the spring under the action of the spring force, and interference occurs between the drawer rear plate (6) and the interlocking block (3); After the protective cover (2) is installed, the interlocking block (3) is moved to the end close to the spring under the pressure exerted by the interference part of the protective cover (2), and finally moves to the positive projection position of the interlocking avoidance groove (6-2) on the static plug-in installation plate (5), so that the interlocking block (3) can at least partially sink into the interlocking avoidance groove (6-2).

3. The drawer protective cover interlocking device according to claim 1, characterized in that: The drawer rear panel (6) is also provided with a pressure strip (6-1) penetrating the static plug-in installation plate (5); when the protective cover (2) is installed on the static plug-in installation plate (5), the pressure strip (6-1) can be inserted into the side wall of the protective cover (2) to form an interference fit.

4. The drawer protective cover interlocking device according to claim 1, characterized in that: The long slot comprises a slot I and a slot II, wherein the slot I is arranged on the static plug-in mounting plate (5), the slot II is arranged on the interlocking block (3), and the slot I and the slot II are substantially on the same horizontal line; The interference portion of the protective cover (2) can extend into the slot I, and the interlocking block (3) is limited on the static plug-in mounting plate (5) by a screw arranged in the slot II and fixedly connected to the static plug-in mounting plate (5), and can move relative to the static plug-in mounting plate (5) to interfere with the interference portion of the protective cover (2) extending into the slot I.

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