Anti-misoperation mechanism of bus duct jack box

Abstract

The utility model relates to the technical field of jack boxes, and discloses a bus duct jack box anti-misoperation mechanism which comprises a box body, a box cover and a circuit breaker installed in the box body, the circuit breaker is a knob circuit breaker, a knob shaft used for controlling a switch is installed on the circuit breaker, the inner wall of an opening of the box body is fixedly connected with an inner flange, and the inner flange is fixedly connected with the box cover. The outer end of the knob shaft is provided with a rectangular outer slot, and the outer end of the knob shaft is provided with a rectangular inner slot; according to the utility model, the control door locking unit is installed on the box cover, and the control door locking unit can lock the box cover and also can rotate the knob shaft on the circuit breaker, so that when the box cover is opened, the control door locking unit cancels the limitation on the box cover, and the circuit breaker is closed by rotating the knob shaft, thereby realizing power failure. The power is cut off when the box cover is opened, and the power is on when the box cover is closed, so that the phenomenon of electric shock caused by mistaken touch when the box cover is opened and electric appliances in the box body are still electrified is avoided, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plug-in boxes, in particular to an anti-misoperation mechanism for a busbar trunking plug-in box. Background Technique

[0002] A busbar trunking is an enclosed metal device composed of copper and aluminum busbars, used to distribute relatively large power to each component of a decentralized system. It has increasingly replaced wire and cable in indoor low-voltage power transmission main line engineering projects. As a functional unit of the power transmission busbar trunking, a plug-in box plays a role in power distribution in the busbar trunking system. With the increasing requirements for the performance and reliability of busbar trunking products, the requirements for the safety, reliability, and operation simplicity of plug-in boxes are also getting higher and higher.

[0003] The prior art, such as the patent with the publication number CN203589644U, discloses a busbar trunking plug-in box, which includes a box body and a box door. The box body is movably connected to the box door. Guide feet are installed at the bottom of the box body, and a locking device is fixed on the side wall of the box body. The locking device includes a pair of locking feet and a reset screw. Each locking foot is fixed to the side wall of the box body by a reset screw, and a positioning notch matching with the locking foot is opened on the inner side wall of the box door. By the cooperation of the guide feet and the locking device, the positioning of the plug-in box is more accurate; the fixing function of the reset screw solves the problem of the box body sliding down due to its own weight.

[0004] The prior art still has deficiencies:

[0005] In the prior art, when the plug-in box is energized inside and power needs to be cut off, the box door of the plug-in box needs to be opened, and then the circuit breaker inside the plug-in box needs to be turned off to achieve power-off. After the plug-in box is opened, its internal circuit is exposed. If power-off is not performed immediately, it is easy to cause misoperation, resulting in electric shock and reduced safety. Therefore, an anti-misoperation mechanism for a busbar trunking plug-in box is proposed. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the utility model provides an anti-misoperation mechanism for a busbar trunking plug-in box to improve the safety of the plug-in box.

[0007] To achieve the above object, the present utility model provides the following technical solutions: an anti-misoperation mechanism for a busbar trunking plug-in box, including a box body, a box cover, and a circuit breaker installed inside the box body. The circuit breaker is a knob circuit breaker, and a knob shaft for controlling the switch is installed on the circuit breaker. The inner wall of the opening of the box body is fixedly connected with an inward flange. A rectangular outer slot is opened at the outer end of the knob shaft, and a rectangular inner slot is also opened at the outer end of the knob shaft. A control locking unit for cooperating with the rectangular outer slot to switch the circuit breaker is installed on the outer wall of the box cover. The control locking unit includes a sliding column rotatably connected inside the box cover. A wrench is fixedly connected to the outer end of the sliding column. A rectangular sleeve slot is opened at the other end of the sliding column, and the rectangular sleeve slot is sleeved outside the rectangular outer slot. A locking rod is fixedly connected to the outer wall of the sliding column, and the outer end of the locking rod is located inside the inward flange. A switch control unit for cooperating with the rectangular inner slot to switch the circuit breaker is installed inside the sliding column.

[0008] Preferably, the sliding column is slidably and rotatably connected to the box body. A retaining ring is fixedly connected to the outer wall of the end of the sliding column located inside the box cover. A jack is opened on the inner wall of the inward flange. A plugging block that is movably plugged into the jack is fixedly connected to the side wall of one end of the locking rod.

[0009] Preferably, a fixed sleeve is fixedly connected to the outer wall of the outer end of the sliding column. A connecting plate sleeved outside the sliding column is rotatably connected to the outer wall of the box cover. A first spring is fixedly connected between the inner side wall of the fixed sleeve and the connecting plate, and the first spring is sleeved on the outer wall of the sliding column.

[0010] Preferably, a sliding rod is fixedly connected to the outer wall of the connecting plate. The sliding rod penetrates the fixed sleeve, and the fixed sleeve is slidably connected to the sliding rod.

[0011] Preferably, a first positioning groove is opened on the side wall of the connecting plate. A positioning post located inside the first positioning groove is fixedly connected to the outer wall of the box cover.

[0012] Preferably, a limiting groove and a second positioning groove are opened on the inner wall of the sliding column. The switch control unit includes a screwing rod that penetrates the sliding column. The screwing rod is slidably connected to the sliding column. A limiting post that is slidably connected to the inner wall of the limiting groove is fixedly connected to the outer wall of the screwing rod. A positioning strip that is slidably connected to the inner wall of the second positioning groove is fixedly connected to the outer wall of the limiting post. A rectangular rod is fixedly connected to one end of the screwing rod, and the rectangular rod is movably plugged into the rectangular inner slot. A second spring located inside the limiting groove is sleeved on the outer wall of the screwing rod. The two ends of the second spring respectively abut against the limiting post and the inner wall of the limiting groove, and the elastic force of the second spring is less than the elastic force of the first spring.

[0013] Preferably, the rectangular sleeve slot is of a rectangular structure, and the rectangular sleeve slot and the rectangular rod are respectively matched with the rectangular outer slot and the rectangular inner slot.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] 1. The utility model installs a control door-locking unit on the box cover. The control door-locking unit can not only lock the box cover tightly, but also rotate the knob shaft on the circuit breaker, so that when the box cover is opened, the control door-locking unit cancels the restriction on the box cover and rotates the knob shaft to close the circuit breaker, thereby achieving power-off. Power-off is achieved when the box cover is opened, and power-on is achieved when the box cover is closed, avoiding the phenomenon of accidental electric shock when the electrical appliances inside the box are still powered on when the box cover is opened, and improving safety.

[0016] 2. The utility model installs a switch control unit, so that the knob shaft can be rotated by using the switch control unit without unlocking the box cover, thereby controlling the switch of the circuit breaker and further improving the practicability.

[0017] Other features and advantages of the utility model will be described in the following specification, and part of them will be obvious from the specification or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structure pointed out in the specification, claims and drawings. Brief Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the box body of the utility model;

[0020] Figure 3 For Figure 2 The partial enlarged view at A in

[0021] Figure 4 It is a schematic sectional view of the box body and the box cover of the utility model;

[0022] Figure 5 It is a schematic diagram of the outer wall structure of the box cover of the utility model;

[0023] Figure 6 It is a schematic sectional view of the box cover and the control door-locking unit of the utility model;

[0024] Figure 7 It is a schematic sectional view of the sliding column of the utility model;

[0025] Figure 8 It is a schematic diagram of the structure of the screwing rod, rectangular rod, limiting column and positioning strip of the utility model.

[0026] In the figure: 1. Box body; 2. Box cover; 3. Inner flanging; 4. Circuit breaker; 5. Knob shaft; 51. Rectangular outer slot; 52. Rectangular inner slot; 6. Control lock unit; 61. Slide post; 62. Wrench; 63. Rectangular sleeve slot; 64. Fixed sleeve; 65. First spring; 66. Lock rod; 67. Insertion block; 68. Retaining ring; 7. Switch control unit; 71. Wrench rod; 72. Rectangular rod; 73. Limit post; 74. Second spring; 75. Positioning strip; 8. Connecting plate; 9. First positioning groove; 10. Positioning post; 11. Slide bar; 12. Second positioning groove; 13. Limit groove; 14. Jack. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art in the technical field of the present invention without creative work belong to the protection scope of the present invention.

[0028] Please refer to Figures 1-8 , the anti-misoperation mechanism of the busbar trunking plug-in box, including a box body 1, a box cover 2, and a circuit breaker 4 installed in the box body 1. The circuit breaker 4 is a knob circuit breaker 4, and a knob shaft 5 for controlling the switch is installed on the circuit breaker 4. An inner flanging 3 is fixedly connected to the inner wall of the opening of the box body 1. A rectangular outer slot 51 is opened at the outer end of the knob shaft 5, and a rectangular inner slot 52 is opened at the outer end of the knob shaft 5. A control lock unit 6 for cooperating with the rectangular outer slot 51 to switch the circuit breaker 4 is installed on the outer wall of the box cover 2. The control lock unit 6 includes a slide post 61 rotatably connected in the box cover 2. A wrench 62 is fixedly connected to the outer end of the slide post 61. A rectangular sleeve slot 63 is opened at the other end of the slide post 61. The rectangular sleeve slot 63 is sleeved outside the rectangular outer slot 51. A lock rod 66 is fixedly connected to the outer wall of the slide post 61. The outer end of the lock rod 66 is located inside the inner flanging 3. A switch control unit 7 for cooperating with the rectangular inner slot 52 to switch the circuit breaker 4 is installed in the slide post 61.

[0029] Such as Figures 1-7As shown in the figure, the busbar trunking plug-in box structure in the present utility model is similar to the existing busbar trunking plug-in box structure. For example, the busbar trunking plug-in box disclosed in the patent with the publication number CN203589644U. The main improvement point of the present utility model is to improve the safety of the plug-in box. In the present utility model, the box cover 2 is hinged to the box body 1 through a hinge. When it is necessary to open the box cover 2 to inspect and repair the electrical components in the box body 1, at this time, the rectangular sleeve groove 63 at the end of the sliding column 61 is sleeved outside the rectangular outer slot 51 on the knob shaft 5. One end of the locking rod 66 is located inside the inner flanging 3. Rotate the turning handle 62. The turning handle 62 drives the sliding column 61 to rotate. The sliding column 61 drives the locking rod 66 and the knob shaft 5 to rotate. The knob shaft 5 closes the circuit breaker 4, so that the electrical components in the box body 1 are powered off. The locking rod 66 rotates out from the inside of the inner flanging 3. At this time, the box cover 2 can be rotated and opened. At this time, the inner wall size of the rectangular sleeve groove 63 can be larger than the inner wall size of the rectangular outer slot 51. Therefore, when the box cover 2 rotates, the rectangular sleeve groove 63 will not be blocked by the rectangular outer slot 51, realizing unlocking the box cover 2 while the circuit breaker 4 is powered off, avoiding the phenomenon of accidental electric shock when the box cover 2 is opened and the electrical components inside the box body 1 are still powered on, and improving safety.

[0030] As Figure 3 , 4 As shown in the figure, the sliding column 61 is slidably and rotatably connected to the box body 1. A retaining ring 68 is fixedly connected to the outer wall of one end of the sliding column 61 located inside the box cover 2. A jack 14 is opened on the inner wall of the inner flanging 3. A plug-in block 67 that is movably inserted into the jack 14 is fixedly connected to the side wall of one end of the locking rod 66. When it is necessary to open the box cover 2, push the turning handle 62 to make the sliding column 61 slide. The rectangular sleeve groove 63 at the end of the sliding column 61 is sleeved outside the rectangular outer slot 51. Here, the inner wall size of the rectangular sleeve groove 63 is equal to the inner wall size of the rectangular outer slot 51. The sliding column 61 drives the locking rod 66 to move out of the jack 14. At this time, the turning handle 62 can be rotated to cut off the power of the circuit breaker 4, and the locking rod 66 can be rotated out from the side wall of the inner flanging 3. Then, pull the turning handle 62 outwards to make the rectangular sleeve groove 63 at the end of the sliding column 61 slide out from the rectangular outer slot 51. At this time, the box cover 2 can be opened. The rectangular sleeve groove 63 is separated from the rectangular outer slot 51 and does not block the rotation of the box cover 2. After the box cover 2 is closed, use the sliding column 61 to drive the knob shaft 5 to rotate to turn on the circuit breaker 4, realizing the power-on of the electrical components inside the box body 1. At the same time, the locking rod 66 rotates to the inside of the inner flanging 3. At this time, pull the turning handle 62 outwards to make the locking rod 66 drive the plug-in block 67 to insert into the jack 14, further improving the locking of the box cover 2.

[0031] As Figure 5 , 6As shown, a fixed sleeve 64 is fixedly connected to the outer wall of the outer end of the sliding column 61. A connecting plate 8 sleeving the sliding column 61 is rotatably connected to the outer wall of the box cover 2. A first spring 65 is fixedly connected between the inner side wall of the fixed sleeve 64 and the connecting plate 8. The first spring 65 is sleeved on the outer wall of the sliding column 61. By using the elastic force of the first spring 65, the sliding column 61 always has an outward force, and the fixed sleeve 64 always abuts against the inner wall of the box cover 2. Thus, when it is necessary to open or close the circuit breaker 4, the turning handle 62 is pressed, so that the fixed sleeve 64 drives the first spring 65 to be compressed, and the rectangular sleeve groove 63 at the end of the sliding column 61 is sleeved outside the rectangular outer slot 51. At this time, rotation can be carried out to open and close the circuit breaker 4. After completion, the turning handle 62 is released, and under the elastic force of the first spring 65, the sliding column 61 automatically separates from the knob shaft 5, improving the convenience of use.

[0032] As Figure 6 shown, a sliding rod 11 is fixedly connected to the outer wall of the connecting plate 8. The sliding rod 11 penetrates the fixed sleeve 64, and the fixed sleeve 64 is slidably connected to the sliding rod 11. When the sliding column 61 rotates, it drives the fixed sleeve 64 to rotate. The fixed sleeve 64 drives the connecting plate 8 to rotate through the sliding rod 11, so that the first spring 65 rotates accordingly, avoiding deformation of the first spring 65. At the same time, when the fixed sleeve 64 moves, it slides on the outer wall of the sliding rod 11.

[0033] As Figure 5 shown, a first positioning groove 9 is formed in the side wall of the connecting plate 8. A positioning post 10 located in the first positioning groove 9 is fixedly connected to the outer wall of the box cover 2. When the turning handle 62 rotates, it drives the connecting plate 8 to rotate by using the fixed sleeve 64 and the sliding rod 11. When the inner wall of one end of the first positioning groove 9 on the connecting plate 8 abuts against the positioning post 10, the opening or closing of the circuit breaker 4 is realized. By using the positioning of the first positioning groove 9 and the positioning post 10, it is convenient to determine the position where the turning handle 62 is turned, facilitating the control of the opening and closing of the box cover 2.

[0034] As Figures 4-7As shown in the figure, a limiting groove 13 and a second positioning groove 12 are formed in the inner wall of the sliding column 61. The switch control unit 7 includes a screwing rod 71 passing through the sliding column 61. The screwing rod 71 is slidably connected to the sliding column 61. A limiting column 73 fixedly connected to the outer wall of the screwing rod 71 is slidably connected to the inner wall of the limiting groove 13. A positioning strip 75 fixedly connected to the outer wall of the limiting column 73 is slidably connected to the inner wall of the second positioning groove 12. One end of the screwing rod 71 is fixedly connected to a rectangular rod 72. The rectangular rod 72 is movably inserted into the rectangular inner socket 52. A second spring 74 is sleeved on the outer wall of the screwing rod 71 and is located in the limiting groove 13. Two ends of the second spring 74 are respectively abutted against the limiting column 73 and the inner wall of the limiting groove 13. The elastic force of the second spring 74 is less than the elastic force of the first spring 65. When the box cover 2 is in the locked state, if it is necessary to turn off the circuit breaker 4, the screwing rod 71 can be pushed to make the limiting column 73 slide in the limiting groove 13. The limiting column 73 drives the second spring 74 to be compressed, so that the rectangular rod 72 at the end of the screwing rod 71 passes through the rectangular socket groove 63 and is inserted into the rectangular inner socket 52 at the end of the knob shaft 5. At this time, when the screwing rod 71 is rotated, the knob shaft 5 can be driven to rotate. Further, the limiting column 73 rotates in the limiting groove 13, and the positioning strip 75 on the outer wall of the limiting column 73 slides in the second positioning groove 12 until the positioning strip 75 turns to contact the inner wall on the other side of the second positioning groove 12, realizing the power-off of the circuit breaker 4 without opening the box cover 2, and further improving the convenience of use.

[0035] As Figure 3 , 5 , 6 shows that the rectangular socket groove 63 is a rectangular structure. The rectangular socket groove 63 and the rectangular rod 72 are respectively matched with the rectangular outer socket 51 and the rectangular inner socket 52. After the switch control unit 7 rotates the knob shaft 5 to turn off the circuit breaker 4, at this time, because the rectangular socket groove 63 is a rectangular structure, the rectangular socket groove 63 cannot be sleeved on the outer wall of the rectangular outer socket 51, thus avoiding the phenomenon of damage caused by misoperation when the rectangular socket groove 63 is sleeved outside the rectangular outer socket 51 and the knob shaft 5 cannot be rotated in this state, and improving the practicability.

[0036] Implementation steps in this embodiment: When it is necessary to open the box cover 2 to inspect and repair the electrical components inside the box body 1, press the turning handle 62, so that the fixed sleeve 64 drives the first spring 65 to compress, and the rectangular sleeve groove 63 at the end of the sliding column 61 is sleeved outside the rectangular outer slot 51. The sliding column 61 drives the locking rod 66 to move out of the jack 14. At this time, turn the turning handle 62, and the turning handle 62 drives the fixed sleeve 64 to rotate. The fixed sleeve 64 drives the connecting plate 8 to rotate through the sliding rod 11, and then the first spring 65 rotates accordingly. The sliding column 61 drives the knob shaft 5 to rotate, so that the circuit breaker 4 is turned off, and the locking rod 66 rotates out from the inner side of the inner flange 3. After completion, release the turning handle 62. Under the elastic force of the first spring 65, the sliding column 61 automatically separates from the knob shaft 5. At this time, the box cover 2 can be rotated and opened. When the box cover 2 rotates, the rectangular sleeve groove 63 will not be blocked by the rectangular outer slot 51, realizing unlocking the box cover 2 while the circuit breaker 4 is powered off; when locking the box cover 2, similarly, use the sliding column 61 to drive the knob shaft 5 to rotate, so that the circuit breaker 4 is turned on, realizing the power-on of the electrical components inside the box body 1. At the same time, the locking rod 66 rotates to the inner side of the inner flange 3. At this time, release the turning handle 62, and under the elastic force of the first spring 65, the turning handle 62 moves outward, so that the locking rod 66 drives the plug-in block 67 to insert into the jack 14 to lock the box cover 2; in the locked state of the box cover 2, if it is necessary to turn off the circuit breaker 4, the turning rod 71 can be pushed, so that the limit post 73 slides in the limit groove 13, and the limit post 73 drives the second spring 74 to compress, so that the rectangular rod 72 at the end of the turning rod 71 passes through the rectangular sleeve groove 63 and inserts into the rectangular inner slot 52 at the end of the knob shaft 5. At this time, turn the turning rod 71, which can drive the knob shaft 5 to rotate. Furthermore, the limit post 73 rotates in the limit groove 13, and the positioning strip 75 on the outer wall of the limit post 73 slides in the second positioning groove 12 until the positioning strip 75 rotates to contact the inner wall on the other side of the second positioning groove 12, realizing power-off of the circuit breaker 4 without opening the box cover 2.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art in the technical field, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A bus duct plug-in box anti-misoperation mechanism, comprising a box body (1), a box cover (2), and a circuit breaker (4) installed in the box body (1), characterized in that: The circuit breaker (4) is a knob circuit breaker (4), a knob shaft (5) for controlling the switch is installed on the circuit breaker (4), an inner flange (3) is fixedly connected to the inner wall of the opening of the box body (1), a rectangular outer slot (51) is opened at the outer end of the knob shaft (5), a rectangular inner slot (52) is opened at the outer end of the knob shaft (5), and a control door lock unit (6) for cooperating with the rectangular outer slot (51) to switch the circuit breaker (4) is installed on the outer wall of the box cover (2), and the control door lock unit (6) includes a rotating connection A sliding column (61) is provided in the box cover (2), the outer end of which is fixedly connected to a twist handle (62), the other end of which is provided with a rectangular sleeve groove (63), which is sleeved outside the rectangular outer slot (51), the outer wall of which is fixedly connected to a locking rod (66), the outer end of which is located on the inner side of the inner flange (3), and a switch control unit (7) for cooperating with the rectangular inner slot (52) to switch the circuit breaker (4) is installed in the sliding column (61).

2. The anti-misoperation mechanism of the bus duct plug-in box according to claim 1 is characterized in that: The slide post (61) is connected to the box body (1) in a sliding and rotatable manner. The outer wall of one end of the slide post (61) located inside the box cover (2) is fixedly connected to a retaining ring (68). The inner wall of the inner flange (3) is provided with an insertion hole (14). The side wall of one end of the locking rod (66) is fixedly connected to a plug-in block (67) movably plugged into the plug-in hole (14).

3. The anti-misoperation mechanism of the bus duct plug-in box according to claim 2 is characterized in that: The outer wall of the outer end of the sliding column (61) is fixedly connected with a fixing sleeve (64), the outer wall of the box cover (2) is rotatably connected with a connecting plate (8) sleeved outside the sliding column (61), and a first spring (65) is fixedly connected between the inner side wall of the fixing sleeve (64) and the connecting plate (8), and the first spring (65) is sleeved on the outer wall of the sliding column (61).

4. The anti-misoperation mechanism of the bus duct plug-in box according to claim 3 is characterized in that: The outer wall of the connecting plate (8) is fixedly connected with a sliding rod (11), the sliding rod (11) passes through the fixing sleeve (64), and the fixing sleeve (64) is slidably connected to the sliding rod (11).

5. The anti-misoperation mechanism of the bus duct plug-in box according to claim 4 is characterized in that: A first positioning groove (9) is formed on the side wall of the connecting plate (8), and a positioning column (10) located in the first positioning groove (9) is fixedly connected to the outer wall of the box cover (2).

6. The anti-misoperation mechanism of the bus duct plug-in box according to claim 5, characterized in that: The inner wall of the sliding column (61) is provided with a limit groove (13) and a second positioning groove (12). The switch control unit (7) comprises a twisting rod (71) penetrating the sliding column (61). The twisting rod (71) is slidably connected to the sliding column (61). The outer wall of the twisting rod (71) is fixedly connected with a limit column (73) slidably connected to the inner wall of the limit groove (13). The outer wall of the limit column (73) is fixedly connected with a positioning strip (75) slidably connected to the inner wall of the second positioning groove (12). One end of the twisting rod (71) is fixedly connected with a rectangular rod (72). The rectangular rod (72) is movably plugged into the rectangular inner slot (52). The outer wall of the twisting rod (71) is sleeved with a second spring (74) located in the limit groove (13). The two ends of the second spring (74) are respectively against the limit column (73) and the inner wall of the limit groove (13). The elastic force of the second spring (74) is smaller than the elastic force of the first spring (65).

7. The anti-misoperation mechanism of the bus duct plug-in box according to claim 6, characterized in that: The rectangular sleeve groove (63) is a rectangular structure. The rectangular sleeve groove (63) and the rectangular rod (72) are matched with the rectangular outer slot (51) and the rectangular inner slot (52) respectively.

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