An electrical cabinet locking device

Abstract

The utility model discloses a kind of electric appliance cabinet locking devices, including cabinet lock, protection mechanism and fixed mechanism, cabinet lock is located on electric appliance cabinet, cabinet lock includes lock pipe and lock core, lock core is rotatably connected in lock pipe, lock hole is equipped on lock core;Protection mechanism includes rotating rod and protection cover, rotating rod is rotatably connected on electric appliance cabinet, protection cover is connected on rotating rod;Fixed mechanism includes torsional spring, torsional spring is sleeved on rotating rod, torsional spring one end is connected on electric appliance cabinet, torsional spring other end is connected on protection cover, torsional spring makes the trend of protection cover rotating towards cabinet lock direction, to make protection cover cover on cabinet lock, the beneficial effects of the utility model are: when protection cover is closed, lock hole is completely hidden inside protection cover, dust, rainwater cannot enter lock hole, avoid the risk of oxidation, corrosion or short circuit due to contaminant covering on conductive surface.

Description

Technical Field

[0001] This utility model relates to the field of electrical cabinets, specifically to an electrical cabinet locking device. Background Technology

[0002] Electrical cabinets, as crucial equipment carriers in power systems, are widely used in substations, factories, and building power distribution systems. They typically integrate high-voltage electrical components such as circuit breakers and contactors, posing safety risks such as electric shock and arc burns during operation or maintenance. Electrical interlocking devices are generally installed between the outgoing line cabinets and the incoming line isolation cabinets in the distribution room. Electrical interlocking is a mechanism that connects the auxiliary contacts of equipment such as circuit breakers, disconnect switches, and grounding switches to the operating power circuit of the relevant electrical equipment, and is widely used in electrically operated equipment.

[0003] Chinese utility model patent CN208834939U discloses an electrical interlocking device and a distribution cabinet, including a cabinet lock and an electromagnetic relay. The cabinet lock includes a lock tube and a lock cylinder located inside the lock tube. The lock cylinder rotates relative to the lock tube in the circumferential direction. The lock cylinder has a lock hole. Two conductive contact parts are fixed on the inner wall of the lock cylinder away from the open end of the lock tube. The two contact parts are arranged opposite to each other and are not connected. The positive and negative poles of the electromagnetic relay are respectively connected to the contact parts through a wire. A conductive connecting block is provided at one end of the lock cylinder near the contact part. The connecting block slides relative to the lock hole and can move to abut against the contact part. A reset member is provided between the connecting block and the lock cylinder. The reset member applies a force to the connecting block to move away from the contact part.

[0004] The aforementioned technologies have the following drawbacks: external dust and rainwater can easily penetrate the keyhole and adhere to the contact part and connecting block, affecting the conductivity of the contact part and connecting block. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose an electrical cabinet locking device to solve the technical problem in the prior art that external dust and rainwater can easily pass through the lock hole and adhere to the contact part and connecting block.

[0006] To achieve the above technical objectives, the present invention provides an electrical cabinet locking device, including a cabinet lock, which is mounted on the electrical cabinet. The cabinet lock includes a lock tube and a lock cylinder, the lock cylinder being rotatably connected inside the lock tube, and the lock cylinder having a lock hole.

[0007] The protective mechanism includes a rotating rod and a protective cover, the rotating rod being rotatably connected to the electrical cabinet, and the protective cover being connected to the rotating rod; and,

[0008] A fixing mechanism, comprising a torsion spring sleeved on a rotating rod, one end of the torsion spring connected to the electrical cabinet, and the other end of the torsion spring connected to a protective cover, wherein the torsion spring causes the protective cover to rotate toward the cabinet lock so that the protective cover covers the cabinet lock.

[0009] In some embodiments, the protective mechanism further includes an observation window disposed on the protective cover, the position of which corresponds to the position of the lock cylinder.

[0010] In some embodiments, the protective mechanism further includes a fluorescent layer disposed on the protective cover on the side away from the cabinet lock.

[0011] In some embodiments, the fixing mechanism further includes a first magnetic block and a second magnetic block. The first magnetic block is connected to the electrical cabinet, and the second magnetic block is connected to the protective cover. When the protective cover is rotated to fit the electrical cabinet, the first magnetic block and the second magnetic block come into contact, and the attraction between the first magnetic block and the second magnetic block is greater than the restoring force of the torsion spring.

[0012] In some embodiments, the protective cover includes a protective layer and a shielding layer, which are stacked together. The shielding layer is located on the side closer to the lock, and the protective layer is located on the side farther from the lock. The fluorescent layer is disposed on the protective layer on the side farther from the shielding layer.

[0013] In some embodiments, the protective mechanism further includes a sealing assembly comprising a convex rubber strip and a concave rubber strip, the convex rubber strip being connected to the protective cover on the side near the appliance cabinet, and the concave rubber strip being connected to the appliance cabinet on the side near the protective cover, the concave rubber strip being used to accommodate the convex rubber strip.

[0014] In some embodiments, the convex rubber strip has a rounded chamfer on the side near the concave rubber strip.

[0015] In some embodiments, the protective mechanism further includes a deep groove ball bearing, which includes an inner ring and an outer ring, the outer ring being connected to the electrical cabinet and the rotating rod being connected to the inner ring.

[0016] In some embodiments, the protective mechanism further includes a handle attached to the protective cover.

[0017] In some embodiments, the protective mechanism further includes an anti-slip layer disposed on the handle.

[0018] Compared with the prior art, the beneficial effects of this utility model include: when the protective cover is closed, the key hole is completely hidden inside the protective cover, and dust and rainwater cannot enter the key hole, thus avoiding the risk of oxidation, corrosion or short circuit caused by contaminants covering the conductive surface. Attached Figure Description

[0019] Figure 1 This is a first-view overall structural schematic diagram of the locking device provided by this utility model;

[0020] Figure 2 This is a second-view overall structural diagram of the locking device provided by this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Cabinet lock; 11. Lock tube; 12. Lock cylinder; 13. Keyhole; 2. Electrical cabinet; 3. Protective mechanism; 31. Rotating rod; 32. Protective cover; 321. Protective layer; 322. Shielding layer; 33. Observation window; 34. Fluorescent layer; 35. Sealing component; 351. Convex rubber strip; 352. Concave rubber strip; 36. Deep groove ball bearing; 361. Inner ring; 362. Outer ring; 37. Handle; 38. Anti-slip layer; 4. Fixing mechanism; 41. Torsion spring; 42. First magnet; 43. Second magnet. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0024] This utility model provides an electrical cabinet locking device, the structure of which is as follows: Figure 1 - Figure 2 As shown, it includes a cabinet lock 1, a protective mechanism 3, and a fixing mechanism 4.

[0025] The cabinet lock 1 is installed on the electrical cabinet 2. The cabinet lock 1 includes a lock tube 11 and a lock cylinder 12. The lock cylinder 12 is rotatably connected inside the lock tube 11 and has a lock hole 13.

[0026] The protective mechanism 3 includes a rotating rod 31 and a protective cover 32. The rotating rod 31 is rotatably connected to the electrical cabinet 2, and the protective cover 32 is connected to the rotating rod 31.

[0027] The fixing mechanism 4 includes a torsion spring 41, which is sleeved on the rotating rod 31. One end of the torsion spring 41 is connected to the electrical cabinet 2, and the other end of the torsion spring 41 is connected to the protective cover 32. The torsion spring 41 causes the protective cover 32 to rotate towards the cabinet lock 1 so that the protective cover 32 covers the cabinet lock 1.

[0028] During use, under the elastic force of the torsion spring 41, the protective cover 32 always tends to rotate towards the lock 1, completely covering the lock hole 13 and surrounding area of ​​the lock 1, forming a physical barrier. When a key needs to be inserted into the lock hole 13, external force overcomes the resistance of the torsion spring 41 and rotates the protective cover 32 upward around the rotating rod 31, exposing the lock hole 13; after the operation is completed, the external force is removed, and the torsion spring 41 drives the protective cover 32 to automatically reset and cover the lock hole 13 again.

[0029] In this invention, when the protective cover 32 is closed, the lock hole 13 is completely hidden inside the protective cover 32, preventing dust and rainwater from entering the lock hole 13 and avoiding the risk of oxidation, corrosion or short circuit on the conductive surface due to contaminant coverage.

[0030] To facilitate observation of the state inside keyhole 13, please refer to... Figure 1 In a preferred embodiment, the protective mechanism 3 further includes an observation window 33, which is disposed on the protective cover 32, and the position of the observation window 33 corresponds to the position of the lock cylinder 12.

[0031] During use, the lock cylinder 12 can be inspected through the observation window 33 to check for abnormalities such as rust or blockage by foreign objects, thus identifying potential malfunctions in advance. This reduces the number of times the protective cover 32 is opened unnecessarily, thereby reducing the frequency of use of the torsion spring 41 and the rotating rod 31 and extending their service life.

[0032] To facilitate observation of the location of lock 1 in the dark, please refer to... Figure 2 In a preferred embodiment, the protective mechanism 3 further includes a fluorescent layer 34, which is disposed on the protective cover 32 on the side away from the cabinet lock 1.

[0033] When in use, during nighttime inspections or emergency operations, the fluorescent layer 34 can clearly distinguish the lock positions of different electrical cabinets 2, avoiding accidental contact with non-target cabinet doors.

[0034] To facilitate temporarily securing the protective cover 32 when it is necessary to open the electrical cabinet 2, please refer to... Figure 2 In a preferred embodiment, the fixing mechanism 4 further includes a first magnetic block 42 and a second magnetic block 43. The first magnetic block 42 is connected to the electrical cabinet 2, and the second magnetic block 43 is connected to the protective cover 32. When the protective cover 32 is rotated to fit against the electrical cabinet 2, the first magnetic block 42 and the second magnetic block 43 come into contact, and the attraction between the first magnetic block 42 and the second magnetic block 43 is greater than the restoring force of the torsion spring 41.

[0035] When using the appliance cabinet 2, if it is necessary to open the cabinet, flip the protective cover 32 upwards until it fits snugly against the cabinet. The first magnet 42 and the second magnet 43 approach and contact each other, generating a strong attraction between them. This attraction is greater than the restoring force of the torsion spring 41, ensuring that the protective cover 32 is securely attached to the appliance cabinet 2. After maintenance is completed, manually flip the protective cover 32 downwards to overcome the attraction between the first magnet 42 and the second magnet 43. The first magnet 42 and the second magnet 43 separate, and under the restoring force of the torsion spring 41, the protective cover 32 rotates downwards until it is closed.

[0036] To reduce the influence of the magnetism of the first magnet 42 and the second magnet 43 on the internal components of the keyhole 13, please refer to... Figure 2 In a preferred embodiment, the protective cover 32 includes a protective layer 321 and a shielding layer 322. The shielding layer 322 is made of aluminum alloy foil or copper mesh with a thickness of 0.3-0.5 mm and its surface is treated with conductive oxidation. The protective layer 321 is made of alloy material with a thickness of 2-3 mm. The protective layer 321 and the shielding layer 322 are stacked together. The shielding layer 322 is located on the side closer to the lock 1, and the protective layer 321 is located on the side away from the lock 1. The fluorescent layer 34 is disposed on the protective layer 321 on the side away from the shielding layer 322.

[0037] In use, the shielding layer 322 provides 60-80dB of electromagnetic interference shielding effectiveness against the 100MHz-10GHz frequency band. In strong electromagnetic environments such as substations, it effectively prevents external electromagnetic radiation from penetrating the protective cover 32, avoiding interference with the electronic components inside the cabinet lock 1. The protective layer 321 enhances the strength of the protective cover 32, enabling it to withstand certain impact forces and reducing the possibility of deformation.

[0038] To improve the sealing performance of the protective cover 32, please refer to... Figure 2 In a preferred embodiment, the protective mechanism 3 further includes a sealing component 35, which includes a convex rubber strip 351 and a concave rubber strip 352. The convex rubber strip 351 is connected to the protective cover 32 on the side near the electrical cabinet 2, and the concave rubber strip 352 is connected to the electrical cabinet 2 on the side near the protective cover 32. The concave rubber strip 352 is used to accommodate the convex rubber strip 351.

[0039] During use, the convex rubber strip 351 and the concave rubber strip 352 are tightly nested to form a "labyrinth-like" sealing structure. Without external force, the interference fit between the two can block dust particles and moisture, preventing the intrusion of foreign objects.

[0040] To reduce the possibility of damage to the convex rubber strip 351 and the concave rubber strip 352, please refer to... Figure 2In a preferred embodiment, the convex rubber strip 351 has a rounded chamfer on the side near the concave rubber strip 352.

[0041] During use, the right-angled edge is prone to rigid impact with the edge of the concave rubber strip 352 when closed, which may cause local tearing of the convex rubber strip 351 and the concave rubber strip 352. The rounded chamfer, through the curved surface transition, converts the impact stress into sliding friction along the chamfer direction, protecting the edges of the convex rubber strip 351 and the concave rubber strip 352 from damage.

[0042] To improve the smoothness of rotation of lever 31, please refer to... Figure 2 In a preferred embodiment, the protective mechanism 3 further includes a deep groove ball bearing 36, which includes an inner ring 361 and an outer ring 362. The outer ring 362 is connected to the electrical cabinet 2, and the rotating rod 31 is connected to the inner ring 361.

[0043] In use, a deep groove ball bearing 36 is added to the protective mechanism 3 to convert the sliding friction between the rotating rod 31 and the electrical cabinet 2 into rolling friction, which significantly improves the rotation performance and service life of the protective cover 32.

[0044] To improve the ease of opening and closing the protective cover 32, please refer to... Figure 2 In a preferred embodiment, the protective mechanism 3 further includes a handle 37, which is connected to the protective cover 32.

[0045] When in use, the protective cover 32 provides a point of leverage for the staff when opening and closing the protective cover 32, reducing the difficulty of opening and closing the protective cover 32 and making it more labor-saving.

[0046] To further improve the ease of opening and closing the protective cover 32, please refer to... Figure 2 In a preferred embodiment, the protective mechanism 3 further includes an anti-slip layer 38, which has an anti-slip texture and is disposed on the handle 37.

[0047] When in use, an anti-slip layer 38 is added to the handle 37. By optimizing the surface friction characteristics and tactile feedback mechanism, the stability, safety and comfort of the protective cover 32 can be significantly improved.

[0048] To better understand this utility model, the following is combined with... Figure 1 - Figure 2The working principle of the locking device for an electrical cabinet 2 according to the present invention is described in detail as follows: Under the elastic force of the torsion spring 41, the protective cover 32 always maintains a tendency to rotate towards the cabinet lock 1, completely covering the lock hole 13 and surrounding area of ​​the cabinet lock 1, forming a physical barrier. When a key needs to be inserted into the lock hole 13, the external force overcomes the resistance of the torsion spring 41 and rotates the protective cover 32 upward around the rotating rod 31, exposing the lock hole 13; after the operation is completed, the external force is removed, and the torsion spring 41 drives the protective cover 32 to automatically reset and cover the lock hole 13 again.

[0049] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An electrical cabinet locking device, used on an electrical cabinet, characterized in that, include: A cabinet lock, which is installed on an electrical cabinet, includes a lock tube and a lock cylinder, the lock cylinder being rotatably connected inside the lock tube, and the lock cylinder having a lock hole; A protective mechanism, comprising a rotating rod and a protective cover, wherein the rotating rod is rotatably connected to the electrical cabinet and the protective cover is connected to the rotating rod; as well as, A fixing mechanism, comprising a torsion spring sleeved on a rotating rod, one end of the torsion spring connected to the electrical cabinet, and the other end of the torsion spring connected to a protective cover, wherein the torsion spring causes the protective cover to rotate toward the cabinet lock so that the protective cover covers the cabinet lock.

2. The electrical cabinet locking device according to claim 1, characterized in that, The protective mechanism also includes an observation window, which is located on the protective cover and its position corresponds to the position of the lock cylinder.

3. The electrical cabinet locking device according to claim 1, characterized in that, The protective mechanism also includes a fluorescent layer, which is located on the side of the protective cover away from the cabinet lock.

4. The electrical cabinet locking device according to claim 1, characterized in that, The fixing mechanism further includes a first magnetic block and a second magnetic block. The first magnetic block is connected to the electrical cabinet, and the second magnetic block is connected to the protective cover. When the protective cover is rotated to fit the electrical cabinet, the first magnetic block and the second magnetic block come into contact. The attraction between the first magnetic block and the second magnetic block is greater than the restoring force of the torsion spring.

5. The electrical cabinet locking device according to claim 3, characterized in that, The protective cover includes a protective layer and a shielding layer, which are stacked together. The shielding layer is located on the side closer to the lock, and the protective layer is located on the side farther from the lock. The fluorescent layer is located on the protective layer on the side farther from the shielding layer.

6. The electrical cabinet locking device according to claim 5, characterized in that, The protective mechanism also includes a sealing component, which includes a convex rubber strip and a concave rubber strip. The convex rubber strip is connected to the protective cover on the side near the electrical cabinet, and the concave rubber strip is connected to the electrical cabinet on the side near the protective cover. The concave rubber strip is used to accommodate the convex rubber strip.

7. The electrical cabinet locking device according to claim 6, characterized in that, The convex rubber strip has a rounded chamfer on the side near the concave rubber strip.

8. The electrical cabinet locking device according to claim 1, characterized in that, The protective mechanism also includes a deep groove ball bearing, which includes an inner ring and an outer ring. The outer ring is connected to the electrical cabinet, and the rotating rod is connected to the inner ring.

9. The electrical cabinet locking device according to claim 1, characterized in that, The protective mechanism also includes a handle, which is attached to the protective cover.

10. The electrical cabinet locking device according to claim 9, characterized in that, The protective mechanism also includes an anti-slip layer, which is located on the handle.

Images