MCB cover capable of being flexibly locked

Abstract

The utility model relates to the technical field of MCB covers, discloses a flexibly-locked MCB cover, and aims to solve the problems that when an instrument is overhauled, an instrument cover needs to be completely unfolded, other triggering devices are easily touched by mistake in the overhauling process, and certain loss is caused, so that the flexibly-locked MCB cover is designed. The utility model relates to an instrument locking device, which allows specific operation to be carried out only by unlocking a partial area without completely opening the whole cover, and reduces the problem of mistakenly touching an instrument, and comprises a shell, four groups of drawing cover assemblies are movably arranged at the upper end of the inner side of the shell, four groups of drawing covers are mounted in the shell, and the drawing covers are in sliding connection with the shell. Sealing strips are arranged on the two adjacent edges of the four sets of drawing covers, the sealing strips are in sliding connection with the drawing covers, one end of each sealing strip is fixedly connected with the inner side of the shell, every two adjacent sets of sealing strips are fixedly connected, and a drawing handrail is fixedly arranged on the outer side of each set of drawing cover.

Description

Technical Field

[0001] The utility model relates to the technical field of MCB covers, in particular to a flexibly locked MCB cover. Background Art

[0002] The MCB cover, also known as the cover of the Miniature Circuit Breaker (MCB), has the following main functions and features:

[0003] Protective function: Prevent personnel from accidentally touching the live parts inside the MCB, reducing the risk of electric shock;

[0004] Dust and moisture proof: Protect the internal components of the MCB from the intrusion of dust, moisture and other pollutants, thereby ensuring its normal operation and service life;

[0005] Anti-misoperation: Prevent non-professionals from operating or accidentally touching the operating mechanism of the MCB, ensuring the safety and stability of the circuit;

[0006] High material strength: usually made of plastic or metal materials with certain strength and durability to withstand external impact and collision in daily use;

[0007] Good insulation performance: ensures that the cover itself does not conduct electricity, further improving electrical safety;

[0008] Design rationality: Match the shape and size of the MCB, install tightly, and do not affect the normal operation and heat dissipation of the MCB;

[0009] Clear markings: relevant electrical parameters, warning signs and operating instructions may be marked to facilitate users to understand and operate correctly;

[0010] Easy to open and close: but can remain firmly locked in the closed state to prevent automatic opening;

[0011] Usually in some cases, when we inspect and repair the instrument, we need to fully unfold the instrument cover. During the inspection, it is easy to accidentally touch other trigger devices, causing certain losses. Therefore, we have designed a flexible locking MCB cover that allows only partial unlocking of areas for specific operations without fully opening the entire cover, reducing accidental touches on the instrument. Utility Model Content

[0012] The purpose of the utility model is to provide a flexible locking MCB cover. By adopting this device, we can solve the problem that when we need to fully unfold the instrument cover during maintenance, it is easy to accidentally touch other trigger devices during maintenance, causing certain losses. Therefore, we have designed a flexible locking MCB cover, which allows only partial unlocking for specific operations without fully opening the entire cover, thereby reducing the problem of accidental touching of the instrument.

[0013] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flexibly locked MCB cover, comprising an outer shell, four groups of pull-out cover assemblies movably provided on the inner upper end of the outer shell, four groups of pull-out covers installed inside the outer shell, the pull-out covers are slidably connected to the outer shell, and sealing strips are provided on two adjacent sides of the four groups of pull-out covers, which are slidably connected to the pull-out covers, one end of the sealing strip is fixedly connected to the inner side of the outer shell, and the two adjacent groups of sealing strips are fixedly connected, and a pull-out armrest is fixedly provided on the outer side of each group of pull-out covers. When we need to inspect a specific position, we only need to move the specific pull-out cover by pulling the armrest to inspect the specific position. The sealing strips provided between the pull-out covers can increase the tightness between the pull-out covers.

[0014] Preferably, the shell is provided with four groups of annular grooves, which fit in with the pull-out cover, and the pull-out cover is moved out horizontally through the annular grooves to complete maintenance.

[0015] Preferably, holes are provided on the surface of the annular groove, and the holes match the pull-out cover. When the pull-out cover is horizontally moved out through the annular groove, the holes match the pull-out cover and are fixed.

[0016] Preferably, a support rod is installed inside the lower end of the shell, the lower end of the support rod is fixedly connected to the shell, and an anti-magnetic shell assembly is fixedly installed on the upper end of the support rod. Through the attraction between electromagnetics, the anti-magnetic shell assembly and the pull-out cover cannot be removed when the power is kept on. It is automatically unlocked in the power-off state to facilitate maintenance, and automatically locked when the power is on to enhance safety.

[0017] Preferably, the anti-magnetic shell assembly includes an anti-magnetic shell, the lower end of the anti-magnetic shell is fixedly connected to the support rod, a magnetic block 1 is installed at the lower end of the inner part of the anti-magnetic shell, and four groups of circular holes are opened at the upper end of the anti-magnetic shell, and the circular holes match the lower end of the pull-out cover. The magnetic block 1 in the anti-magnetic shell is electrically attracted to the pull-out cover, and the pull-out covers are automatically locked to enhance safety.

[0018] Preferably, a slot hole 1 is provided on the lower surface of the pull-out cover, a spring 1 is provided on the inner side of the slot hole 1, one end of the spring 1 away from the anti-magnetic shell assembly is fixedly connected to the pull-out cover, and a clamping block is provided at the other end of the spring 1, and the clamping block matches the hole. When we move the pull-out cover out, the clamping block matches the hole on the surface of the annular groove to fix it.

[0019] Preferably, a second slot is provided on the lower surface of the pull-out cover, and a second spring is provided inside the second slot. One end of the second spring is away from the anti-magnetic shell assembly and is fixedly connected to the pull-out cover. The other end of the second spring is provided with a second magnet, which matches the circular hole. The second magnet is magnetically attracted to the first magnet when power is applied. When the device is powered on, the second magnet is magnetically attracted to the first magnet. One end of the second magnet is in the pull-out cover, and the other part is in the anti-magnetic shell, completing the fixation. When the device is powered off, the second magnet is restored to its position by the action of the second spring, completing the removal of the pull-out cover.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] The utility model proposes a flexibly locked MCB cover, comprising an outer shell, four groups of pull-out cover assemblies movably provided on the inner upper end of the outer shell, four groups of pull-out covers installed inside the outer shell, the pull-out covers and the outer shell being slidably connected, sealing strips being provided on two adjacent sides of the four groups of pull-out covers, the sealing strips being slidably connected to the pull-out covers, one end of the sealing strip being fixedly connected to the inner side of the outer shell, and two adjacent groups of sealing strips being fixedly connected, and a pull-out handrail being fixedly provided on the outer side of each group of pull-out covers. When we need to inspect a specific position, we only need to move the specific pull-out cover by pulling the handrail to inspect the specific position, and the sealing strips provided between the pull-out covers can increase the tightness between the pull-out covers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the shell structure of the utility model;

[0024] Figure 3 This is a schematic structural diagram of the anti-magnetic shell assembly of the utility model;

[0025] Figure 4 This is a schematic structural diagram of the pull-out cover assembly of the present utility model;

[0026] Figure 5 This is a schematic diagram of the planar structure of the pull-out cover of the present utility model;

[0027] Figure 6 This is a schematic diagram of the planar structure of the pull-out cover of the present invention.

[0028] In the figure: 1. Shell; 11. Circular groove; 12. Hole; 13. Support rod; 14. Anti-magnetic shell assembly; 141. Anti-magnetic shell; 1411. Circular hole; 142. Magnetic block 1; 2. Pull-out cover assembly; 21. Pull-out cover; 211. Slot 1; 212. Spring 1; 213. Block; 214. Slot 2; 215. Spring 2; 216. Magnetic block 2; 22. Sealing strip; 23. Pull-out armrest. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0030] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0031] Combine Figure 1 and Figure 4 , a flexibly locked MCB cover comprises a shell 1, four groups of pull-out cover assemblies 2 are movably provided on the inner upper end of the shell 1, four groups of pull-out covers 21 are installed inside the shell 1, the pull-out covers 21 are slidably connected to the shell 1, and sealing strips 22 are provided on both adjacent sides of the four groups of pull-out covers 21, which are slidably connected to the pull-out covers 21, one end of the sealing strip 22 is fixedly connected to the inner side of the shell 1, and the two adjacent groups of sealing strips 22 are fixedly connected, and a pull-out armrest 23 is fixedly provided on the outer side of each group of pull-out covers 21. When we need to inspect the position of a specific position, we only need to move the specific pull-out cover 21 by pulling the armrest 23 to inspect the specific position. The sealing strips 22 arranged between the pull-out covers 21 can increase the tightness between the pull-out covers 21.

[0032] Combine Figure 1 and Figure 2 A flexible locking MCB cover has four groups of annular grooves 11 on the shell 1. The annular grooves 11 fit with the pull-out cover 21. The pull-out cover 21 is moved out horizontally through the annular grooves 11 to complete maintenance.

[0033] Combine Figure 1 and Figure 2 A flexible locking MCB cover has holes 12 on the surface of the annular groove 11. The holes 12 match the pull-out cover 21. When the pull-out cover 21 is moved horizontally through the annular groove 11, it is fixed by matching the holes 12 with the pull-out cover 21.

[0034] Combine Figure 1 and Figure 2A flexible locking MCB cover, a support rod 13 is installed inside the lower end of the shell 1, the lower end of the support rod 13 is fixedly connected to the shell 1, and the upper end of the support rod 13 is fixedly installed with an anti-magnetic shell component 14. Through electromagnetic attraction, the anti-magnetic shell component 14 and the pull-out cover 21 cannot be removed when the power is kept on. It is automatically unlocked in the power-off state to facilitate maintenance, and automatically locked when the power is on to enhance safety.

[0035] Combine Figure 2 and Figure 3 A flexible locking MCB cover, the anti-magnetic shell assembly 14 includes an anti-magnetic shell 141, the lower end of the anti-magnetic shell 141 is fixedly connected to the support rod 13, the lower end of the inner part of the anti-magnetic shell 141 is installed with a magnetic block 142, the upper end of the anti-magnetic shell 141 is opened with four groups of circular holes 1411, the circular holes 1411 match the lower end of the pull-out cover 21, the magnetic block 142 in the anti-magnetic shell 141 and the pull-out cover 21 are electrically attracted to each other, and the pull-out cover 21 is automatically locked to enhance safety.

[0036] Combine Figure 4 and Figure 6 A flexible locking MCB cover, a slot 211 is provided on the lower surface of the pull-out cover 21, a spring 212 is provided on the inner side of the slot 211, one end of the spring 212 away from the anti-magnetic shell assembly 14 is fixedly connected to the pull-out cover 21, and a clamping block 213 is provided on the other end of the spring 212, which matches the hole 12. When we remove the pull-out cover 21, the clamping block 213 matches the hole 12 on the surface of the annular groove 11 to fix it.

[0037] Combine Figure 3-Figure 6 , a flexible locking MCB cover, the lower surface of the pull-out cover 21 is provided with a second slot 214, and a second spring 215 is provided inside the second slot 214. The end of the second spring 215 away from the anti-magnetic shell assembly 14 is fixedly connected to the pull-out cover 21, and the other end of the second spring 215 is provided with a second magnetic block 216, which matches the circular hole 1411. The second magnetic block 216 and the first magnetic block 142 are magnetically attracted when power is applied to the device. When power is applied to the device, the second magnetic block 216 and the first magnetic block 142 are magnetically attracted to each other. One end of the second magnetic block 216 is in the pull-out cover 21, and the other part is in the anti-magnetic shell 141, completing the fixation. When the device is powered off, the second magnetic block 216 is restored to its position by the action of the second spring 215, completing the removal of the pull-out cover 21.

[0038] Working principle: When we need to inspect a specific position, we only need to move the specific pull-out cover 21 by pulling the armrest 23 to inspect the specific position. The sealing strip 22 set between the pull-out covers 21 can increase the tightness between the pull-out covers 21, and through the attraction between electromagnetics, the magnetic block 142 in the anti-magnetic shell 141 is magnetically attracted to the magnetic block 216. One end of the magnetic block 216 is in the pull-out cover 21, and the other part is in the anti-magnetic shell 141 to complete the fixation. When the device is powered off, the spring 215 acts to restore the magnetic block 216 to its position, completing the energized attraction for the removal of the pull-out cover 21. When the power is kept on, it cannot be removed and is automatically locked to enhance safety. It is automatically unlocked in the power-off state to facilitate maintenance.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexible locking MCB cover, comprising a housing (1), wherein four sets of draw-out cover assemblies (2) are movably provided on the inner upper end of the housing (1), and characterized in that: Four groups of pull-out covers (21) are installed inside the shell (1), and the pull-out covers (21) are slidably connected to the shell (1). Sealing strips (22) are provided on two adjacent sides of the four groups of pull-out covers (21), and the sealing strips (22) are slidably connected to the pull-out covers (21). One end of the sealing strip (22) is fixedly connected to the inner side of the shell (1), and two adjacent groups of sealing strips (22) are fixedly connected. A pull-out handrail (23) is fixedly provided on the outer side of each group of pull-out covers (21).

2. A flexible locking MCB cover according to claim 1, characterized in that: The housing (1) is provided with four groups of annular grooves (11), and the annular grooves (11) are matched with the drawer cover (21).

3. The flexible locking MCB cover according to claim 2, characterized in that: The surface of the annular groove (11) is provided with holes (12), and the holes (12) match the pull-out cover (21).

4. The flexible locking MCB cover according to claim 1, characterized in that: A support rod (13) is installed inside the lower end of the housing (1), the lower end of the support rod (13) is fixedly connected to the housing (1), and an anti-magnetic shell component (14) is fixedly installed on the upper end of the support rod (13).

5. The flexible locking MCB cover according to claim 4, characterized in that: The anti-magnetic shell assembly (14) includes an anti-magnetic shell (141), the lower end of the anti-magnetic shell (141) is fixedly connected to the support rod (13), a magnetic block (142) is installed at the lower end of the inner part of the anti-magnetic shell (141), and four groups of circular holes (1411) are opened at the upper end of the anti-magnetic shell (141), and the circular holes (1411) match the lower end of the pull-out cover (21).

6. The flexible locking MCB cover according to claim 1, characterized in that: A slot hole (211) is provided on the lower surface of the pull-out cover (21), and a spring (212) is provided on the inner side of the slot hole (211). One end of the spring (212) away from the anti-magnetic shell assembly (14) is fixedly connected to the pull-out cover (21), and a clamping block (213) is provided on the other end of the spring (212), and the clamping block (213) matches the hole (12).

7. The flexible locking MCB cover according to claim 1, characterized in that: The lower surface of the pull-out cover (21) is provided with a second slot hole (214), and a second spring (215) is provided inside the second slot hole (214). One end of the second spring (215) away from the anti-magnetic shell component (14) is fixedly connected to the pull-out cover (21), and the other end of the second spring (215) is provided with a second magnetic block (216). The second magnetic block (216) matches the circular hole (1411), and the second magnetic block (216) and the first magnetic block (142) are magnetically attracted to each other when power is applied.

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