Door linkage locking mechanism and power distribution cabinet

Abstract

The application discloses a door linkage locking mechanism and a power distribution cabinet, the locking mechanism is used for a cabinet body of the power distribution cabinet, and the locking mechanism comprises a mounting plate, a switching shaft, a limiting sheet, a mounting frame, a limiting rod and a door body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power distribution cabinet, and particularly relates to a door linkage locking mechanism and a power distribution cabinet. BACKGROUND

[0002] The door of the power distribution cabinet needs to be locked after closing to avoid the door being opened by mistake by an operator and causing a safety accident.

[0003] The door locking mechanism in the prior art mainly uses an electromagnetic lock, and the electromagnetic lock requires the power distribution cabinet to have a secondary power supply, i.e., a power supply dedicated to the electromagnetic lock, which is high in cost and difficult to repair. SUMMARY

[0004] The present application aims to at least solve one of the problems in the prior art. To this end, the present application provides a door linkage locking mechanism, which uses a mechanical interlocking mechanism to lock the door, is low in cost, and is easy to repair.

[0005] The present application also provides a power distribution cabinet with the door linkage locking mechanism.

[0006] According to the door linkage locking mechanism of the first aspect of the present application, the door linkage locking mechanism is used in a cabinet body of a power distribution cabinet, and includes a mounting plate, a switch-on / off rotating shaft rotatably connected to the mounting plate, a limiting sheet provided on the switch-on / off rotating shaft and provided with a limiting claw, a mounting frame slidably arranged on the mounting plate in a vertical direction, the mounting frame being provided with a connecting shaft and a door pin, a limiting rod hingedly connected to the mounting plate, a lower end of one end of the limiting rod being used to abut against the limiting claw, the other end of the limiting rod being provided with a waist-shaped hole, the connecting shaft being inserted into the waist-shaped hole and being slidable in the waist-shaped hole, and a door body having an upper end detachably connected to the door pin, the door body being provided with a hanging groove, the hanging groove including a horizontal section and a vertical section, the vertical section being arranged above the horizontal section and being communicated with the horizontal section, the cabinet body being provided with a rivet, and the rivet being used to enter from the horizontal section to be hung and buckled to the vertical section.

[0007] According to the door linkage locking mechanism, the following beneficial effects are achieved: when the opening and closing shaft is rotated to the closed state, the limiting claw on the limiting sheet abuts against the lower end of one end of the limiting rod, at this time, the limiting rod is in a horizontal state, the waist-shaped hole is also horizontally extended, the rivet is clamped in the vertical section, the door pin limits the upward displacement of the door body, the limiting rod takes the hinge as a fulcrum, the distance from one end of the limiting rod to the fulcrum is greater than the distance from the other end of the limiting rod to the fulcrum, if unlocking is needed, the rivet needs to be separated from the vertical section to the horizontal section, so the door body needs to be lifted, thereby the door pin needs to be moved upward, which inevitably causes the mounting frame to be moved upward, the mounting frame needs to push the limiting rod to rotate, the limiting rod is abutted against the limiting sheet in the closed state, and the limiting rod forms a forceful lever relative to the mounting frame, so the mounting frame cannot be moved upward, thereby causing the door body to be in the locked state when being closed, and the mechanism is simple and ingenious, linkage is achieved by using the hanging groove, the rivet and the door pin, so that the door body cannot be easily opened when being closed, and safety is ensured.

[0008] According to some embodiments of the present application, the mounting frame is connected with the mounting plate through an elastic member, the elastic member is used to drive the mounting frame to move downward, the elastic member is arranged to enable the hanging groove to be clamped in the rivet, elastic pre-tightening force is provided, the door body is ensured to be in the normally closed state, and safety is ensured.

[0009] According to some embodiments of the present application, the elastic member includes a coil spring, a spring sheet, an air spring or a rubber block, the elastic member is various, is widely available and has low cost.

[0010] According to some embodiments of the present application, a plurality of hanging grooves are arranged, the rivets are arranged in one-to-one correspondence with the hanging grooves, the uniformity of force on the door body is ensured, and part of the rivets is prevented from being broken due to excessive load.

[0011] According to some embodiments of the present application, the door body is arranged in a groove type, the left side plate and the right side plate of the door body are both provided with the hanging grooves, and the left side force and the right side force of the door body are balanced.

[0012] According to some embodiments of the present application, the door pin is provided with a clamping block and a clamping shaft at one end for clamping the door body, the diameter of the clamping shaft is smaller than the diameter of the clamping block, the clamping block is connected with the door pin through the clamping shaft, the upper end plate of the door body is provided with a clamping opening, the distance between the opposite sides in the clamping opening is smaller than the diameter of the clamping block and greater than the diameter of the clamping shaft, so that when the door body is unlocked, the door pin is moved upward, the door body is lifted upward and then taken out forward, which is more convenient, and the interlocking effect is better achieved.

[0013] According to some embodiments of the present application, the free end of the rivet is provided with a pressing plate for pressing the corresponding left side plate and the corresponding right side plate, and the pressing plate can limit the displacement of the door body in the left-right direction and can also press the door body to avoid the shaking of the door body.

[0014] According to some embodiments of the present application, the mounting plate is provided with at least two guide rods arranged side by side, and the mounting frame is slidingly connected to the guide rods, so that the mounting plate can be stably lifted vertically and avoid moving off the direction.

[0015] According to some embodiments of the present application, the limiting rod is provided with an abutting groove arranged downward, and the limiting claw is used for abutting the groove bottom of the abutting groove, and the abutting groove can accommodate the limiting claw and prevent the limiting claw from easily separating from the abutting groove, thereby ensuring better locking performance.

[0016] According to the second aspect of the present application, a power distribution cabinet comprises the door body linkage locking mechanism.

[0017] According to the power distribution cabinet of the present application, at least the following beneficial effects are achieved: when the opening and closing shaft is rotated to the closing state, the limiting claw on the limiting piece abuts the lower end of one end of the limiting rod, at this time, the limiting rod is in a horizontal state, the waist-shaped hole is also horizontally extended, the rivet is clamped in the vertical section, the door pin limits the upward displacement of the door body, the limiting rod takes the hinge as a fulcrum, the distance from one end of the limiting rod to the fulcrum is greater than the distance from the other end of the limiting rod to the fulcrum, if unlocking is needed, the rivet needs to be separated from the vertical section to the horizontal section, so the door body needs to be lifted, thereby the door pin needs to be moved upward, which will cause the mounting frame to move upward, and the upward movement of the mounting frame needs the connecting shaft to push the limiting rod to rotate, and the limiting rod is abutted by the closing limiting piece, and the limiting rod forms a force lever relative to the mounting frame, so the mounting frame cannot move upward, thereby causing the door body to present a closed state when closing, and the mechanism is simple and ingenious, the linkage is realized by the hanging groove, the rivet and the door pin, so that the door body cannot be easily opened when closing, and safety is ensured.

[0018] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0020] Figure 1 Structure schematic view of the door linkage locking mechanism and the cabinet body of the embodiment of the present application;

[0021] Figure 2 Structure schematic view of the door linkage locking mechanism and the cabinet body of the embodiment of the present application; Figure 1 Enlarged view of A in the above figure;

[0022] Figure 3 Structure schematic view of the door linkage locking mechanism and the cabinet body of the embodiment of the present application; Figure 1 Structure schematic view of the door linkage locking mechanism and the cabinet body of the embodiment of the present application;

[0023] Figure 4 Structure schematic view of the door linkage locking mechanism and the cabinet body of the embodiment of the present application; Figure 1 Structure schematic view of the door linkage locking mechanism and the cabinet body of the embodiment of the present application;

[0024] Figure 5 Structure schematic view of the door linkage locking mechanism and the cabinet body of the embodiment of the present application; Figure 1 Structure schematic view of the door linkage locking mechanism and the cabinet body of the embodiment of the present application.

[0025] Mounting plate 100, guide rod 110;

[0026] Open-close gate rotation shaft 200;

[0027] Limiting sheet 300, limiting claw 310;

[0028] Mounting rack 400, connecting shaft 410, door pin 420, clamping block 421, clamping shaft 422, elastic member 430;

[0029] Limiting rod 500, waist-shaped hole 510, abutting groove 520;

[0030] Door body 600, hanging groove 610, horizontal section 611, vertical section 612, clamping hole 620;

[0031] Cabinet body 700, rivet 710, pressing sheet 711. DETAILED DESCRIPTION

[0032] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary only, and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0033] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by the upper, lower, front, rear, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In the description of the present application, one or more is understood as one or more, two or more is understood as two or more, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features or the order of the indicated technical features.

[0035] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0036] Reference Figures 1 to 5The utility model provides a door linkage locking mechanism for switchgear cabinet body 700, which comprises a mounting plate 100, a switching shaft 200 rotatably connected to the mounting plate 100, a limiting piece 300 arranged on the switching shaft 200, the limiting piece 300 being provided with a limiting claw 310, a mounting rack 400 slidably arranged on the mounting plate 100 in the vertical direction, the mounting rack 400 being provided with a connecting shaft 410 and a door pin 420, a limiting rod 500 hingedly connected to the mounting plate 100, the lower end of one end of the limiting rod 500 being used to abut against the limiting claw 310, the other end of the limiting rod 500 being provided with a waist-shaped hole 510, the connecting shaft 410 being inserted into the waist-shaped hole 510 and being slidable in the waist-shaped hole 510, and a door body 600 detachably connected to the door pin 420 at the upper end, the door body 600 being provided with a hanging groove 610, the hanging groove 610 comprising a horizontal section 611 and a vertical section 612, the vertical section 612 being arranged above the horizontal section 611 and being communicated with the horizontal section 611, and the cabinet body 700 being provided with a rivet 710 used to enter from the horizontal section 611 to be hung and buckled to the vertical section 612. When the switching shaft 200 is rotated to the closed state, the limiting claw 310 on the limiting piece 300 abuts against the lower end of one end of the limiting rod 500, at this time, the limiting rod 500 is in a horizontal state, the waist-shaped hole 510 is also horizontally extended, the rivet 710 is clamped in the vertical section 612, the door pin 420 limits the upward displacement of the door body 600, the limiting rod 500 takes the hinged part as a fulcrum, the distance from one end of the limiting rod 500 to the fulcrum is greater than the distance from the other end of the limiting rod 500 to the fulcrum, and if unlocking is needed, the rivet 710 needs to be separated from the vertical section 612 and come out from the horizontal section 611, so the door body 600 needs to be lifted, which requires the door pin 420 to move upward, which in turn requires the mounting rack 400 to move upward, and the mounting rack 400 needs to push the limiting rod 500 to rotate, the limiting rod 500 abuts against the limiting piece 300 in the closed state, and the limiting rod 500 forms a forceful lever relative to the mounting rack 400, so the mounting rack 400 cannot move upward, thereby causing the door body 600 to be in a locked state when closed, the mechanism is simple and ingenious, linkage is realized by using the hanging groove 610, the rivet 710 and the door pin 420, so that the door body 600 cannot be easily opened when closed, and safety is ensured. It can be understood that if there is no hanging groove 610, the door body 600 will be tilted or shaken under the forward force, the hanging groove 610 limits the tilting of the door body 600, and the hanging groove 610 is arranged in the L shape, which just produces a series of linkage actions with the linkage mechanism on the mounting rack 400, the door body 600 must be lifted upward to separate from the hanging groove 610, and the door body 600 must be unlocked to be lifted upward, it can be understood that the horizontal section 611 is parallel to the ground when the switchgear cabinet is normally placed.

[0037] In some embodiments, the mounting frame 400 is connected to the mounting plate 100 by the elastic member 430, which is used to drive the mounting frame 400 to move downward. The elastic member 430 is arranged to enable the hanging groove 610 to be clamped in the rivet 710, to provide elastic pre-tightening force, to ensure that the door body 600 is in a normally closed state, and to ensure safety. It can be understood that the elastic member 430 is a coil spring, the elastic member 430 is sleeved on the guide rod 110, one end of the elastic member 430 is connected to the mounting frame 400, and the other end of the elastic member 430 is connected to the mounting plate 100. The elastic member 430 is indirectly connected to the mounting plate 100.

[0038] In some embodiments, the elastic member 430 can also be a compression spring, that is, the elastic member 430 is used to drive the mounting frame 400 to move upward, that is, to open the switch, so that the door body 600 can automatically pop up, and a person only needs to take out the door body 600 forward.

[0039] In some embodiments, the elastic member 430 includes a coil spring, a spring piece, an air spring, or a rubber block, and the types of elastic members are various, the sources are wide, and the cost is low.

[0040] In some embodiments, the hanging groove 610 is provided in plurality, and the rivet 710 is provided in one-to-one correspondence with the hanging groove 610, to ensure the uniformity of the force received by the door body 600, and to avoid that some rivets 710 are broken due to excessive load. It can be understood that when the rivet 710 abuts to the top end of the vertical section 612, the waist-shaped hole 510 is in a horizontal state, that is, the limiting rod 500 is in a horizontal state.

[0041] In some embodiments, the door body 600 is provided in a groove type, the left side plate and the right side plate of the door body 600 are both provided with the hanging groove 610, to ensure that the left side force and the right side force of the door body 600 are balanced. It can be understood that the number of the hanging grooves 610 of the left side plate of the door body 600 is the same as the number of the hanging grooves 610 of the right side plate of the door body 600, and the hanging grooves 610 are symmetrically arranged about the vertical middle line of the front plate of the door body 600.

[0042] In some embodiments, the door pin 420 is provided with a clamping block 421 and a clamping shaft 422 at one end for clamping the door body 600, the diameter of the clamping shaft 422 is smaller than the diameter of the clamping block 421, the clamping block 421 is connected to the door pin 420 through the clamping shaft 422, the upper end plate of the door body 600 is provided with a clamping hole 620, the distance between the opposite two sides in the clamping hole 620 is smaller than the diameter of the clamping block 421, and the distance between the opposite two sides in the clamping hole 620 is greater than the diameter of the clamping shaft 422. This makes it more convenient to lift the door body 600 upward and then take it out forward when the door body 600 is unlocked, and also to better achieve the interlocking function.

[0043] In some embodiments, the free end of the rivet 710 is provided with a pressing piece 711 for pressing the corresponding left side plate and the corresponding right side plate. The provided pressing piece 711 can not only limit the displacement of the door body 600 in the left-right direction, but also can press the door body 600 to avoid the left-right shaking of the door body 600. It can be understood that the pressing piece 711 can be integrally formed with the rivet 710, or can be threadedly connected to the free end of the rivet 710. The so-called free end is the end of the rivet 710 which is not connected to the cabinet body 700.

[0044] In some embodiments, at least two guide rods 110 are arranged on the mounting plate 100, and the at least two guide rods 110 are arranged side by side. The mounting bracket 400 is slidingly connected to the guide rods 110, so that the mounting plate 100 can stably ascend in the vertical direction and avoid moving off the direction.

[0045] In some embodiments, the limiting rod 500 is provided with an abutting groove 520, and the abutting groove 520 is arranged downward. The limiting claw 310 is arranged to abut the groove bottom of the abutting groove 520. The provided abutting groove 520 can not only accommodate the limiting claw 310, but also can prevent the limiting claw 310 from easily separating from the abutting groove 520, so as to ensure better locking performance. It can be understood that the abutting groove 520 can prevent the limiting claw 310 from separating from the limiting rod 500 in the front-back direction, and can prevent the limiting claw 310 from separating from the limiting rod 500 to cause the security risk of disengaging the lock when the limiting rod 500 is subjected to vibration, for example, when an earthquake occurs.

[0046] A power distribution cabinet includes a door body linkage locking mechanism. When the opening and closing shaft 200 is rotated to the closing state, the limiting claw 310 on the limiting piece 300 abuts the lower end of one end of the limiting rod 500. At this time, the limiting rod 500 is in a horizontal state, the waist-shaped hole 510 is also horizontally extended, the rivet 710 is clamped in the vertical section 612, and the door pin 420 limits the upward displacement of the door body 600. The limiting rod 500 takes the hinge as a fulcrum, the distance from one end of the limiting rod 500 to the fulcrum is greater than the distance from the other end of the limiting rod 500 to the fulcrum. If the lock is to be unlocked, the rivet 710 needs to be separated from the vertical section 612 and come out from the horizontal section 611. Thus, the door body 600 needs to be lifted, so that the door pin 420 needs to be moved upward. This will cause the mounting bracket 400 to move upward, and the mounting bracket 400 needs to push the limiting rod 500 to rotate through the connecting shaft 410. However, the limiting rod 500 is abutted by the closing limiting piece 300, and the limiting rod 500 forms a force lever with respect to the mounting bracket 400. Thus, the mounting bracket 400 cannot move upward, so that the door body 600 presents a closed state when the door is closed. The mechanism is simple and ingenious, and uses the hanging groove 610, the rivet 710 and the door pin 420 to realize linkage, so that the door body 600 cannot be easily opened when the door is closed, and safety is ensured.

[0047] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A door linkage locking mechanism for a power distribution cabinet, characterized in that, include: Mounting plate; The opening and closing shaft is rotatably connected to the mounting plate; A limit plate is disposed on the opening and closing shaft, and the limit plate is provided with a limit claw; A mounting bracket is slidably mounted vertically on the mounting plate, and the mounting bracket is provided with a connecting shaft and a door pin; A limiting rod is hinged to the mounting plate. The lower end of one end of the limiting rod is used to abut against the limiting claw. The other end of the limiting rod is provided with an oblong hole. The connecting shaft is inserted into the oblong hole and can slide in the oblong hole. The door body has a door pin detachably connected to its upper end. The door body is provided with a hanging groove, which includes a horizontal section and a vertical section. The vertical section is located above the horizontal section and connects to the horizontal section. The cabinet body is provided with rivets, which are used to enter from the horizontal section to hook onto the vertical section. When the opening and closing shaft rotates to the closed state, the limiting claw on the limiting plate abuts against the lower end of one end of the limiting rod. At this time, the limiting rod is in a horizontal state, the oblong hole is in a horizontally extending state, the rivet is stuck in the vertical section, the door pin restricts the upward displacement of the door body, and the limiting rod uses the hinge point as the fulcrum. The distance from one end of the limiting rod to the fulcrum is greater than the distance from the other end of the limiting rod to the fulcrum. If unlocking is required, the rivet needs to disengage from the vertical section and come out from the horizontal section, which requires lifting the door body. This requires the door pin to move upward, which in turn requires the mounting bracket to move upward. The upward movement of the mounting bracket requires the connecting shaft to push the limiting rod to rotate. The limiting rod is abutted by the closed limiting plate, and the limiting rod forms a force-reducing lever with respect to the mounting bracket. The mounting bracket cannot move upward, resulting in the door body being in a locked state when the circuit is closed.

2. The door linkage locking mechanism according to claim 1, characterized in that: The mounting bracket is connected to the mounting plate via an elastic element, which drives the mounting bracket to move downward.

3. The door linkage locking mechanism according to claim 2, characterized in that: The elastic element includes a helical spring, a sheet spring, a gas spring, or a rubber block.

4. The door linkage locking mechanism according to claim 3, characterized in that: The hanging slots are provided in multiple ways, and the rivets are provided in a one-to-one correspondence with the hanging slots.

5. The door linkage locking mechanism according to claim 4, characterized in that: The door body is configured as a groove, and both the left and right side panels of the door body are provided with the hanging groove.

6. The door linkage locking mechanism according to claim 5, characterized in that: The door pin is used to engage with the door body. One end of the door pin is provided with a locking block and a locking shaft. The diameter of the locking shaft is smaller than the diameter of the locking block. The locking block is connected to the door pin through the locking shaft. The upper end plate of the door body has a locking slot. The distance between the two opposite sides inside the locking slot is smaller than the diameter of the locking block and larger than the diameter of the locking shaft.

7. The door linkage locking mechanism according to claim 5, characterized in that: The free end of the rivet is provided with a pressure plate, which is used to press down the corresponding left side plate and the corresponding right side plate.

8. The door linkage locking mechanism according to claim 1, characterized in that: The mounting plate is provided with at least two guide rods, which are arranged side by side, and the mounting bracket is slidably connected to the guide rods.

9. The door linkage locking mechanism according to any one of claims 1 to 8, characterized in that: The limiting rod is provided with an abutment groove, which is set downwards, and the limiting claw is used to abut against the bottom of the abutment groove.

10. A power distribution cabinet, characterized in that, Includes the door linkage locking mechanism as described in any one of claims 1 to 9.

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