Improved contact box

Abstract

The present invention discloses an improved contact box, which includes a contact box body. An insulating partition is fixedly arranged inside the contact box body. The insulating partition is a circular partition, and its outer sidewall is fixedly connected to the inner sidewall of the contact box body. A static contact is inserted at one end of the contact box body, and a moving contact electrically connected to the static contact is inserted at the other end of the contact box body. By adding a pushing component and using it in cooperation with a limiting component, the placement box can be pushed out. When the horizontal pressing plate extends from the inside of the placement box, the vertical movement of the placement box and the horizontal movement of the horizontal pressing plate in the horizontal direction can be realized. After extension, it can play a role of squeezing and limiting between the static contact and the insulating partition, increasing the stability of the placement of the static contact. By cooperating with the use of an anti-reverse pushing component, the positioning after the horizontal pressing plate extends can be realized, avoiding the danger during the use of the switch cabinet caused by the shaking of the static contact, and effectively improving the safety of use.

Description

Technical Field

[0001] The invention relates to the technical field of contact boxes, in particular to an improved contact box. Background Art

[0002] The main function of the contact box is to insulate and connect the connection parts of the incoming and outgoing lines. At present, the general contact box structure includes an epoxy body formed by epoxy material gel, one end is open and the other end is closed, the side wall of the upper part of the cylinder and the bottom are respectively provided with an outlet and an inlet, a static contact mounting insert is provided at the top of the inner cavity of the cylinder, the busbar extends into the insulating cylinder through the outlet and is electrically connected to the static contact mounting insert, an outer side and an inner side of the cylinder are provided with an umbrella skirt, and four mounting flanges are provided at the bottom of the product.

[0003] However, when producing the static contact mounting inserts on the existing contact boxes, it is necessary to determine the threaded holes used in conjunction with the static contacts. The threaded holes are reserved for fixing the static contacts to the inside of the contacts through bolts. However, when installing the bolts, it is necessary to use the other end of the hand to tighten the bolts. Due to the small space of the contact box, the installation is more troublesome. The reserved threaded holes cannot be adapted to the inside of all contact boxes. During the installation process, the static contacts are easily shaken inside the contact boxes, and gaps are present. When the voltage is higher, discharge is more likely to occur in the gap, which poses a safety hazard to the switch cabinet.

[0004] To this end, we propose an improved contact box. Summary of the invention

[0005] The object of the present invention is to provide an improved contact box capable of increasing the installation stability of a stationary contact and reducing its shaking, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an improved contact box, comprising a contact box body, an insulating partition is fixedly provided inside the contact box body, the insulating partition is a circular partition, and the outer wall is fixedly connected to the inner wall of the contact box body, a static contact is inserted at one end of the contact box body, and a moving contact electrically connected to the static contact is inserted at the other end of the contact box body;

[0007] Installation grooves, the installation grooves are equidistantly arranged on the outer side wall of the static contact, and a lifting bottom plate is slidably arranged inside the installation groove, and a placement box is fixedly arranged on one side above the lifting bottom plate;

[0008] A first spring, used for bouncing up the lifting bottom plate, and installed below the lifting bottom plate;

[0009] A horizontal extrusion plate, which is used to extrude one side of the insulating partition and is installed inside the placement box;

[0010] A pushing transmission component, which is used to be pushed by the horizontal extrusion plate and is installed inside the placement box;

[0011] An anti-reverse pushing component, which is used to reverse-push the horizontal extrusion plate after it extends, and is installed below the horizontal extrusion plate.

[0012] Preferably, the pushing transmission component includes a cavity opened inside the horizontal extrusion plate. A suspension rod is arranged inside the cavity, and one end of the suspension rod is fixedly connected to the inner wall of the placement box. The other end of the suspension rod is fixedly provided with a U-shaped frame. A first rotating shaft is rotatably arranged between the ends of the U-shaped frame. First gears are fixedly sleeved at both ends of the first rotating shaft. A first rack plate is movably arranged below one side of the first gear and inside the cavity. The first rack plate is meshed with the first gear. A first bevel gear is fixedly sleeved on the first rotating shaft. A second bevel gear is meshed inside the first bevel gear. The second bevel gear is fixedly sleeved on a second rotating shaft. One end of the second rotating shaft is rotatably connected to the inner wall of the placement box. The other end of the second rotating shaft is fixedly provided with a second gear. A disc spring is sleeved on the second rotating shaft on one side of the second gear. The other end of the disc spring is fixedly connected to the suspension rod through a connecting rod;

[0013] The pushing transmission component further includes an opening opened at the bottom of one end of the placement box. A second rack plate meshed with the second gear is arranged inside the opening. The other end of the second rack plate is fixedly arranged inside the installation groove;

[0014] A limiting component is arranged on one side of the first rack plate. The limiting component is used to press and limit the first rack plate inside the cavity and is installed at one end of the cavity; By adding a pushing component on one side of the horizontal extrusion block, the convenience of the horizontal extrusion block extending from the inside of the placement box is increased. The horizontal extrusion plate can play a role in extruding and pushing the insulating partition inside the contact box body, and can play a role in limiting the static contact, thereby increasing the stability of the installation and placement of the static contact, reducing its shaking, and effectively improving the safety of the switch cabinet during use.

[0015] Preferably, the limiting component includes a notch formed at one end of the cavity and located on the horizontal extrusion plate. First jacks are formed on both side walls of the notch. Second jacks matching the first jacks are formed on the first rack plate. A U-shaped rod is arranged on one side of the first jack. Both ends of the U-shaped rod are fixedly connected to the side walls of the notch. A plug block matching the first jack is arranged inside the U-shaped rod. The other end of the plug block is fixedly provided with a push rod. A baffle is fixedly arranged on the push rod and outside the U-shaped rod. A second spring is sleeved on the push rod between the baffle and the U-shaped rod;

[0016] The limiting component further includes a column arranged inside the opening. Limiting grooves matching the push rod are formed on both sides of the column. A lifting groove is formed on the horizontal extrusion plate on one side below the first rack plate. A third spring is arranged inside the lifting groove; By adding the limiting component, the presence of the limiting component will play a role in suppressing the first rack plate during the rising process of the placement box, avoiding the meshing rotation between the first gears at both ends of the first rotating shaft and the first rack plate during the rotation of the second rotating shaft, thereby realizing the stability of the horizontal extrusion plate placed inside the placement box.

[0017] Preferably, the anti-reverse push component includes a groove formed on one side below the horizontal extrusion plate. Stop plates are equidistantly arranged inside the groove. One end of each stop plate is fixedly provided with a baffle parallel to the horizontal extrusion plate. The connection between the stop plate and the baffle is rotationally connected to the groove through a movable bolt;

[0018] The anti-reverse push component further includes blocks fixedly arranged on the bottom side of the inner wall of the placement box at equal intervals. The blocks are arranged at an inclination of 45° in the horizontal direction. An anti-reverse push component is arranged below the horizontal extrusion plate, which can prevent the moving contact from pushing the static contact when the static contact is installed after the moving contact is installed, causing the static contact to displace in the horizontal direction and not causing the static contact to shake. The clamping connection between the stop plate and the block, and the baffle parallel to the horizontal extrusion plate at the other end of the stop plate can play a role in limiting the stop plate, thereby avoiding the reverse rotation of the stop plate after passing over the block, increasing the safety of the stop plate placement, and at the same time increasing the stability of the horizontal extrusion plate placement.

[0019] Preferably, sliding grooves are formed on both sides of the inner wall of the placement box. Sliders fixedly connected to the side walls of the horizontal extrusion plate are slidably arranged inside the sliding grooves. Both sides of the placement box are slidably connected to the horizontal extrusion plate through the sliding grooves and the sliders, increasing the stability of the horizontal extrusion plate moving under the push of the pushing component, avoiding the shaking of the horizontal extrusion plate during the extending process, and effectively improving the moving stability.

[0020] Preferably, a vertical rod is fixedly provided in the middle of one side of the U-shaped frame away from the second rotating shaft. Both ends of the second rotating shaft are respectively connected to the vertical rod and the inner wall of the placement box through bearing seats. The vertical rod can support one end of the second rotating shaft, increasing the stability of the rotation of the second rotating shaft.

[0021] Preferably, positioning components are provided on both sides of the lifting bottom plate. The positioning components are used to limit the lifting bottom plate and are installed inside the installation groove. The positioning components include mounting plates fixedly provided on both sides of the inner wall of the installation groove. Positioning holes are formed on the mounting plates. Insert blocks fixedly connected to the lifting bottom plate are inserted into the positioning holes. A notch is formed inside the insert block, and a positioning block is slidably provided inside the notch. A fourth spring is provided on one side of the positioning block. The positioning components can limit the lifting bottom plate after lifting, increasing the stability of the placement after the lifting bottom plate is raised, preventing the lifting bottom plate from sliding in the vertical direction inside the installation groove, and effectively increasing the stability of the placement of the placement box.

[0022] Preferably, a slope is formed on one side of the upper surface of the positioning block. The slope on the positioning block facilitates the extrusion of the positioning block when passing through the positioning hole, increasing the convenience of the lifting of the limiting block.

[0023] Preferably, an insulating extrusion ring is sleeved on the static contact on one side of the insulating partition board, reducing the impact force between the static contact and the insulating partition board and increasing the safety of use.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] By optimizing the existing contact box, the present invention adds a pushing-out component, and the pushing component and the limiting component are used in cooperation to realize the out of the placement box and the horizontal extrusion plate extending from the inside of the placement box, so as to realize the vertical movement of the placement box and the horizontal movement of the horizontal extrusion plate in the horizontal direction. After extending, it can play a role in squeezing and limiting between the static contact and the insulating partition board, increasing the stability of the placement of the static contact. By cooperating with the use of the anti-reverse pushing component, the positioning of the horizontal extrusion plate after extension can be realized, increasing the stability and safety of the placement of the horizontal extrusion plate, preventing the static contact from shaking and causing danger during the use of the switch cabinet, and effectively improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a cross-sectional view of the overall structure in the present invention;

[0028] Figure 3Cross-sectional view of the contact box body in the present invention;

[0029] Figure 4 Cross-sectional view of the static contact in the present invention;

[0030] Figure 5 Side cross-sectional view of the static contact in the present invention;

[0031] Figure 6 Structural schematic diagram of the placement box in the present invention;

[0032] Figure 7 Bottom view of the placement box in the present invention;

[0033] Figure 8 Cross-sectional view of the placement box in the present invention;

[0034] Figure 9 Cross-sectional view of the horizontal extrusion plate in the present invention;

[0035] Figure 10 Structural schematic diagram of the pushing-out assembly in the present invention;

[0036] Figure 11 Structural schematic diagram of the limiting assembly;

[0037] Figure 12 Cross-sectional view of the insertion block in the present invention.

[0038] In the figure: 1 - contact box body; 2 - insulating partition; 3 - static contact; 4 - moving contact; 5 - installation groove; 6 - lifting bottom plate; 7 - placement box; 8 - first spring; 9 - horizontal extrusion plate; 10 - pushing-out transmission assembly; 11 - suspension rod; 12 - U-shaped frame; 13 - first rotating shaft; 14 - first gear; 15 - first rack plate; 16 - first bevel gear; 17 - second bevel gear; 18 - second rotating shaft; 19 - second gear; 20 - disc spring; 21 - opening; 22 - second rack plate; 23 - limiting assembly; 24 - notch; 25 - first jack; 26 - second jack; 27 - U-shaped rod; 28 - insertion block; 29 - push rod; 30 - baffle; 31 - second spring; 32 - column; 33 - limiting groove; 34 - anti-reverse pushing assembly; 35 - lifting groove; 36 - third spring; 37 - stop plate; 38 - retaining piece; 39 - movable bolt; 40 - stop block; 41 - sliding groove; 42 - slider; 43 - vertical rod; 44 - positioning assembly; 45 - mounting plate; 46 - insertion block; 47 - notch; 48 - positioning block; 49 - fourth spring; 50 - cavity. Detailed implementation manners

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0040] Embodiment 1

[0041] Please refer to Figures 1 - 10 , the improved contact box shown in the figure includes a contact box body 1. An insulating partition 2 is fixedly arranged inside the contact box body 1. The insulating partition 2 is a circular partition, and its outer sidewall is fixedly connected to the inner sidewall of the contact box body 1. An insulating extrusion ring is sleeved on one side of the insulating partition 2 and located on the static contact 3. A static contact 3 is inserted into one end of the contact box body 1, and a moving contact 4 electrically connected to the static contact 3 is inserted into the other end of the contact box body 1;

[0042] Please refer to Figure 2 and Figure 4 , the installation groove 5 shown in the figure is equidistantly opened on the outer sidewall of the static contact 3, and a lifting bottom plate 6 is slidably arranged inside the installation groove 5. A placement box 7 is fixedly arranged on one side above the lifting bottom plate 6;

[0043] Please refer to Figure 2 , Figure 4 and Figure 5 , the first spring 8 shown in the figure is used to bounce the lifting bottom plate 6 and is installed below the lifting bottom plate 6;

[0044] Please refer to Figure 1 , Figures 4 - 9 , the horizontal extrusion plate 9 shown in the figure is used to extrude one side of the insulating partition 2 and is installed inside the placement box 7;

[0045] Please refer to Figures 8 - 9 , the pushing transmission component 10 shown in the figure is used to push the horizontal extrusion plate 9 and is installed inside the placement box 7;

[0046] Please refer to Figures 7 - 9 , the anti-reverse push component 34 shown in the figure is used to reverse-push the horizontal extrusion plate 9 after it extends and is installed below the horizontal extrusion plate 9.

[0047] Please refer to Figures 8 - 10, the pushing transmission assembly 10 in the figure includes a cavity 50 opened inside the horizontal extrusion plate 9. A suspension rod 11 is arranged inside the cavity 50, and one end of the suspension rod 11 is fixedly connected to the inner wall of the placement box 7. The other end of the suspension rod 11 is fixedly provided with a U-shaped frame 12. A first rotating shaft 13 is rotatably arranged between the ends of the U-shaped frame 12. First gears 14 are fixedly sleeved at both ends of the first rotating shaft 13. A first rack plate 15 is movably arranged below one side of the first gear 14 and inside the cavity 50. The first rack plate 15 is meshed and connected with the first gear 14. A first bevel gear 16 is fixedly sleeved on the first rotating shaft 13. A second bevel gear 17 is meshed inside the first bevel gear 16. The second bevel gear 17 is fixedly sleeved on a second rotating shaft 18. One end of the second rotating shaft 18 is rotatably connected to the inner wall of the placement box 7. The other end of the second rotating shaft 18 is fixedly provided with a second gear 19. A disc spring 20 is sleeved on the second rotating shaft 18 on one side of the second gear 19. The other end of the disc spring 20 is fixedly connected to the suspension rod 11 through a connecting rod. A vertical rod 43 is fixedly arranged in the middle of the side of the U-shaped frame 12 away from the second rotating shaft 18. Both ends of the second rotating shaft 18 are respectively connected to the vertical rod 43 and the inner wall of the placement box 7 through bearing seats;

[0048] Please refer to Figures 7 - 9 , the pushing transmission assembly 10 in the figure further includes an opening 21 opened at the bottom of one end of the placement box 7. A second rack plate 22 meshed with the second gear 19 is arranged inside the opening 21. The other end of the second rack plate 22 is fixedly arranged inside the installation groove 5;

[0049] Please refer to Figure 11 , a limiting component 23 is arranged on one side of the first rack plate 15 in the figure. The limiting component 23 is used to press and limit the first rack plate 15 inside the cavity 50 and is arranged at one end of the cavity 50.

[0050] Please refer to Figure 8 , sliding grooves 41 are opened on both sides of the inner wall of the placement box 7 in the figure. Sliders 42 fixedly connected to the side wall of the horizontal extrusion plate 9 are slidably arranged inside the sliding grooves 41.

[0051] When installing the static contact 3 inside the contact box body 1: after the placement box 7 is pressed into the installation groove 5, the placement box 7 is tied to the static contact 3 through a binding band or a zip tie and is located inside the placement box 7. Then, the static contact 3 is inserted into the contact box. After insertion, the static contact 3 is pushed so that the end of the static contact 3 is sleeved between the insulating extrusion ring and the insulating partition 2, and when pushing, the edge of the insulating extrusion ring is in contact with the side surface of the insulating partition 2, so that the static contact 3 can be in a horizontally placed state, increasing the verticality of the static contact 3 in the vertical direction;

[0052] After the static contact 3 is stably placed horizontally, the staff loosens the strap or cable tie. At this time, the placement box 7 will be ejected under the action of the first spring 8 inside the installation groove 5, causing the lifting bottom plate 6 to drive the placement box 7 to move upward, realizing the placement box 7 extending out of the inside of the installation groove 5;

[0053] During the process of the placement box 7 extending out of the inside of the installation groove 5, the limiting component 23 makes the first rack plate 15 located in the lifting groove 35, thereby realizing the separation between the first gear 14 and the first rack plate 15, and realizing the flexibility of the rotation of the first rotating shaft 13 and the second rotating shaft 18 driven by the first gear 14. At the same time, the second gear 19 will mesh with the second rack plate 22. During the meshing process, it will drive the rotation of the second rotating shaft 18, and the rotation of the second rotating shaft 18 will drive the winding of the disc spring 20 on the second rotating shaft 18, enabling the disc spring 20 to collect and store elastic potential energy;

[0054] When the placement box 7 extends to the port of the installation groove 5, at this time, the second gear 19 will be separated from the second rack plate 22, and at the same time, the limiting component 23 will lose the limit on the first rack plate 15, enabling the first rack plate 15 to extend and mesh with the first gear 14. The second gear 19 loses the effect of driving extrusion and meshing, causing the elastic potential energy stored in the disc spring 20 to be released. During the release process, it drives the second rotating shaft 18 to rotate in the reverse direction. The rotation of the second rotating shaft 18 will drive the rotation of the second bevel gear 17 at one end. The rotation of the second bevel gear 17 will meshingly drive the rotation of the first bevel gear 16. The rotation of the first bevel gear 16 will drive the rotation of the first rotating shaft 13. The first rotating shaft 13 can realize driving the rotation of the first gears 14 at both ends. The rotation of the first gears 14 will mesh with the first rack plate 15. Since the first rack plate 15 is arranged inside the cavity 50, during the movement of the first rack plate 15, it will synchronously drive the movement of the horizontal extrusion plate 9, thereby realizing the horizontal extrusion plate 9 extending to the outside of the placement box 7, and making the end of the horizontal extrusion plate 9 contact and squeeze the insulating partition 2, thereby realizing the function of extrusion and limitation, increasing the stability of the placement of the static contact 3, avoiding the shaking of the static contact 3 resulting in the detachment between the static contact 3 and the moving contact 4, and at the same time avoiding damage to the switch cabinet caused by excessive current, effectively improving the safety of use.

[0055] Embodiment 2

[0056] Please refer to Figures 8 - 9, this embodiment further illustrates Example 1. The pushing transmission assembly 10 in the figure includes a cavity 50 opened inside the horizontal extrusion plate 9. A suspension rod 11 is provided inside the cavity 50, and one end of the suspension rod 11 is fixedly connected to the inner wall of the placement box 7. The other end of the suspension rod 11 is fixedly provided with a U-shaped frame 12. A first rotating shaft 13 is rotatably provided between the ends of the U-shaped frame 12. Both ends of the first rotating shaft 13 are fixedly sleeved with first gears 14. One side below the first gear 14 and inside the cavity 50, a first rack plate 15 is movably provided. The first rack plate 15 is meshed and connected with the first gear 14. A first bevel gear 16 is fixedly sleeved on the first rotating shaft 13. A second bevel gear 17 is meshed inside the first bevel gear 16. The second bevel gear 17 is fixedly sleeved on a second rotating shaft 18. One end of the second rotating shaft 18 is rotatably connected to the inner wall of the placement box 7. The other end of the second rotating shaft 18 is fixedly provided with a second gear 19. A disc spring 20 is sleeved on the second rotating shaft 18 on one side of the second gear 19. The other end of the disc spring 20 is fixedly connected to the suspension rod 11 through a connecting rod;

[0057] Please refer to Figures 7 - 9 , the pushing transmission assembly 10 in the figure further includes an opening 21 opened at the bottom of one end of the placement box 7. A second rack plate 22 meshed with the second gear 19 is provided inside the opening 21. The other end of the second rack plate 22 is fixedly provided inside the installation groove 5;

[0058] Please refer to Figure 11 , a limiting component 23 is provided on one side of the first rack plate 15 in the figure. The limiting component 23 is used to press and limit the first rack plate 15 inside the cavity 50 and is installed at one end of the cavity 50;

[0059] Please refer to Figure 9 and Figure 11 , the limiting component 23 in the figure includes a notch 24 opened at one end of the cavity 50 and located on the horizontal extrusion plate 9. First jacks 25 are opened on both side walls of the notch 24. Second jacks 26 matching the first jacks 25 are opened on the first rack plate 15. A U-shaped rod 27 is provided on one side of the first jack 25. Both ends of the U-shaped rod 27 are fixedly connected to the side wall of the notch 24. An insertion block 28 matching the first jack 25 is provided inside the U-shaped rod 27. The other end of the insertion block 28 is fixedly provided with a push rod 29. A baffle 30 is fixedly provided on the push rod 29 outside the U-shaped rod 27. A second spring 31 is sleeved on the push rod 29 between the baffle 30 and the U-shaped rod 27;

[0060] Please refer to Figure 10, the limit component 23 in the figure further includes a column 32 disposed inside the opening 21. Limit grooves 33 matching the push rod 29 are formed on both sides of the column 32. A lifting groove 35 is formed on the lower side of the first rack plate 15 and located on the horizontal pressing plate 9. A third spring 36 is disposed inside the lifting groove 35.

[0061] In this embodiment, when limiting the first rack plate 15, in order to avoid the rotation of the second rotating shaft 18 being blocked during the energy storage process of the disc spring 20, it is necessary to separate the first gear 14 from the first rack plate 15. During the upward movement of the placement box 7, due to the presence of the column 32, the limit grooves 33 on both sides of the column 32 will continuously press the push rod 29, causing the push rod 29 to drive the insertion block 28 to limit the first and second jacks, thereby realizing the lowering of the first rack plate 15 and enabling the first rack plate 15 to be received in the lifting groove 35, achieving the separation between the first gear 14 and the first rack plate 15, and increasing the rotation flexibility of the second rotating shaft 18;

[0062] When the placement box 7 rises to the highest point, at this time, the second gear 19 is separated from the second rack plate 22, and at the same time, the push rod 29 is separated from the limit grooves 33 on both sides of the column 32. The push rod 29 will be pushed out under the action of the second spring 31 and drive the insertion block 28 to be withdrawn from the inside of the first and second jacks. The first rack plate 15 will lose its limiting effect and will extend from the inside of the lifting groove 35 under the action of the third spring 36 to engage with the first gear 14, thereby realizing the pushing of the first rack plate 15. Since the first rack plate 15 is installed inside the cavity 50, it can synchronously drive the movement of the horizontal pressing plate 9, thereby realizing the extension movement of the horizontal pressing plate 9 and increasing the convenience during use.

[0063] Embodiment 3

[0064] Please refer to Figures 1 - 12 , this embodiment further illustrates other embodiments. In the figure, the contact box body 1, an insulating partition 2 is fixedly provided inside the contact box body 1. The insulating partition 2 is a circular partition, and its outer sidewall is fixedly connected to the inner sidewall of the contact box body 1. A static contact 3 is inserted at one end of the contact box body 1, and a moving contact 4 electrically connected to the static contact 3 is inserted at the other end of the contact box body 1;

[0065] Please refer to Figure 2 and Figure 4 , in the figure, the installation groove 5, the installation grooves 5 are equidistantly formed on the outer sidewall of the static contact 3, and a lifting bottom plate 6 is slidably disposed inside the installation groove 5. A placement box 7 is fixedly provided on one side above the lifting bottom plate 6;

[0066] Please refer to Figure 2 , Figure 4, the first spring 8 in the illustration is used to bounce the lifting bottom plate 6 and is installed below the lifting bottom plate 6;

[0067] Please refer to Figure 1 , Figures 4 - 9 , the horizontal extrusion plate 9 in the illustration is used to extrude one side of the insulating partition 2 and is installed inside the placement box 7;

[0068] Please refer to Figures 8 - 9 , the pushing transmission component 10 in the illustration is used to push the horizontal extrusion plate 9 and is installed inside the placement box 7;

[0069] Please refer to Figure 7 and Figure 8 , the anti-reverse pushing component 34 in the illustration is used to reverse-push the horizontal extrusion plate 9 after it extends and is installed below the horizontal extrusion plate 9.

[0070] Please refer to Figure 7 and Figure 8 , the anti-reverse pushing component 34 in the illustration includes a groove opened on one side below the horizontal extrusion plate 9. A plurality of stop plates 37 are equidistantly arranged inside the groove. One end of the stop plate 37 is fixedly provided with a baffle 38 parallel to the horizontal extrusion plate 9. The connection between the stop plate 37 and the baffle 38 is rotatably connected to the groove through a movable bolt 39;

[0071] Please refer to Figure 7 and Figure 8 , the anti-reverse pushing component 34 in the illustration further includes a plurality of stop blocks 40 fixedly arranged on the bottom side of the inner wall of the placement box 7. The stop blocks 40 are arranged at an inclination of 45° in the horizontal direction;

[0072] Please refer to Figure 6 and Figure 12 , positioning components 44 are provided on both sides of the lifting bottom plate 6 in the illustration. The positioning components 44 are used to limit the lifting bottom plate 6 and are installed inside the installation groove 5. The positioning components 44 include mounting plates 45 fixedly arranged on both sides of the inner wall of the installation groove 5. Positioning holes are opened on the mounting plates 45. Plug blocks 46 fixedly connected to the lifting bottom plate 6 are inserted into the positioning holes. A notch 47 is opened inside the plug block 46. A positioning block 48 is slidably arranged inside the notch 47. A fourth spring 49 is provided on one side of the positioning block 48. An inclined surface is opened on the upper side of one side of the positioning block 48.

[0073] In this embodiment, the lower part of the horizontal extrusion plate 9 is connected to the inside of the placement box 7 through the anti-reverse push component 34. During use, when the horizontal extrusion plate 9 extends out of the placement box, the stop plate 37 will be pushed to rotate around the movable bolt 39 and inserted between the stoppers 40. When the horizontal extrusion plate 9 touches the insulating partition 2, the stop plate 37 stops rotating and is clamped between the stoppers 40. When the moving contact needs to be inserted into the contact box to be connected to the static contact 3, during the insertion process of the moving contact 4, the static contact 3 will be pushed. However, since a baffle parallel to the horizontal extrusion plate 9 is fixedly provided at the other end of the stop plate 37, the reverse rotation of the stop plate 37 is avoided, so that the stop plate 37 is stably clamped between the stoppers 40, which can play a role in limiting and fixing the horizontal extrusion plate 9, increasing the stability of the placement of the horizontal extrusion plate 9, avoiding the shaking of the static contact 3, effectively improving the stability of the placement of the static contact 3, and increasing the safety of the use of the switch cabinet.

[0074] It should be noted that in this article, relational terms such as first and second are only used 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 "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0075] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Improved contact box, characterized in that, Comprising: A contact box body (1), inside which an insulating partition (2) is fixedly provided. The insulating partition (2) is a circular partition, and its outer sidewall is fixedly connected to the inner sidewall of the contact box body (1). One end of the contact box body (1) is inserted with a static contact (3), and the other end of the contact box body (1) is inserted with a moving contact (4) electrically connected to the static contact (3); An installation groove (5) is equidistantly opened on the outer sidewall of the static contact (3), and a lifting bottom plate (6) is slidably provided inside the installation groove (5). A placement box (7) is fixedly provided on one side above the lifting bottom plate (6); A first spring (8) is used to bounce the lifting bottom plate (6) and is installed below the lifting bottom plate (6); A horizontal extrusion plate (9) is used to extrude one side of the insulating partition (2) and is installed inside the placement box (7); A pushing transmission assembly (10) is used to push the horizontal extrusion plate (9) and is installed inside the placement box (7); An anti-reverse pushing assembly (34) is used to reverse-push the horizontal extrusion plate (9) after it extends and is installed below the horizontal extrusion plate (9).

2. The improved contact box according to claim 1, characterized in that: The pushing transmission assembly (10) includes a cavity (50) opened inside the horizontal extrusion plate (9). A suspension rod (11) is provided inside the cavity (50), and one end of the suspension rod (11) is fixedly connected to the inner wall of the placement box (7). The other end of the suspension rod (11) is fixedly provided with a U-shaped frame (12). A first rotating shaft (13) is rotatably provided between the ends of the U-shaped frame (12). First gears (14) are fixedly sleeved at both ends of the first rotating shaft (13). A first rack plate (15) is movably provided below one side of the first gear (14) and inside the cavity (50). The first rack plate (15) is meshed with the first gear (14). A first bevel gear (16) is fixedly sleeved on the first rotating shaft (13). A second bevel gear (17) is meshed inside the first bevel gear (16). The second bevel gear (17) is fixedly sleeved on a second rotating shaft (18). One end of the second rotating shaft (18) is rotatably connected to the inner wall of the placement box (7). A second gear (19) is fixedly provided at the other end of the second rotating shaft (18). A disc spring (20) is sleeved on one side of the second gear (19) and on the second rotating shaft (18). The other end of the disc spring (20) is fixedly connected to the suspension rod (11) through a connecting rod; The pushing transmission assembly (10) further includes an opening (21) opened at the bottom of one end of the placement box (7). A second rack plate (22) meshed with the second gear (19) is provided inside the opening (21). The other end of the second rack plate (22) is fixedly provided inside the installation groove (5); On one side of the first rack plate (15), a limiting component (23) is provided. The limiting component (23) is used to press and limit the first rack plate (15) inside the cavity (50), and is installed at one end of the cavity (50).

3. The improved contact box according to claim 2, wherein: The limiting component (23) includes a notch (24) opened at one end of the cavity (50) and located on the horizontal extrusion plate (9). First insertion holes (25) are opened on both side walls of the notch (24). Second insertion holes (26) matching the first insertion holes (25) are opened on the first rack plate (15). A U-shaped rod (27) is provided on one side of the first insertion hole (25). Both ends of the U-shaped rod (27) are fixedly connected to the side wall of the notch (24). An insertion block (28) matching the first insertion hole (25) is provided inside the U-shaped rod (27). The other end of the insertion block (28) is fixedly provided with a push rod (29). A baffle (30) is fixedly provided on the push rod (29) and outside the U-shaped rod (27). A second spring (31) is sleeved on the push rod (29) between the baffle (30) and the U-shaped rod (27); The limiting component (23) further includes a column (32) provided inside the opening (21). Limiting grooves (33) matching the push rod (29) are opened on both sides of the column (32). A lifting groove (35) is opened on the horizontal extrusion plate (9) on the lower side of the first rack plate (15). A third spring (36) is provided inside the lifting groove (35).

4. The improved contact box according to claim 1, wherein: The anti-reverse push component (34) includes a groove opened on the lower side of one side of the horizontal extrusion plate (9). Stop plates (37) are equidistantly provided inside the groove. One end of each stop plate (37) is fixedly provided with a baffle piece (38) parallel to the horizontal extrusion plate (9). The connection between the stop plate (37) and the baffle piece (38) is rotationally connected to the groove through a movable bolt (39); The anti-reverse push component (34) further includes stop blocks (40) equidistantly and fixedly provided on the bottom side of the inner wall of the placement box (7). The stop blocks (40) are arranged at an inclination of 45° in the horizontal direction.

5. The improved contact box according to claim 1, characterized in that: Sliding grooves (41) are opened on both sides of the inner wall of the placement box (7). Sliders (42) fixedly connected to the side wall of the horizontal extrusion plate (9) are slidably provided inside the sliding grooves (41).

6. The improved contact box according to claim 2, wherein: A vertical rod (43) is fixedly provided in the middle of the side of the U-shaped frame (12) away from the second rotating shaft (18). Both ends of the second rotating shaft (18) are respectively connected to the vertical rod (43) and the inner wall of the placement box (7) through bearing seats.

7. The improved contact box according to claim 1, wherein: On both sides of the lifting bottom plate (6), there are positioning components (44). The positioning components (44) are used to limit the lifting bottom plate (6) and are installed inside the installation groove (5). The positioning components (44) include mounting plates (45) fixedly arranged on both sides of the inner wall of the installation groove (5). Positioning holes are formed in the mounting plates (45). Inside the positioning holes, there are inserted blocks (46) fixedly connected to the lifting bottom plate (6). A notch (47) is formed inside the inserted block (46). Inside the notch (47), there is a positioning block (48) slidingly arranged. On one side of the positioning block (48), there is a fourth spring (49).

8. The improved contact box according to claim 7, characterized in that: On one side of the upper part of the positioning block (48), there is an inclined surface formed.

9. The improved contact box according to claim 1, characterized in that: On one side of the insulating partition plate (2) and located on the static contact (3), there is an insulating extrusion ring sleeved.

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