Plug box for bus duct

Abstract

The utility model discloses a jack box for a bus duct, comprising a bus duct and a jack box, the jack box comprises a box body, a wiring terminal and a protective door, two ends of the jack box are connected with mounting plates, each mounting plate is internally and movably provided with two sliding blocks, each sliding block is internally and vertically provided with a sliding rod in a sliding manner, and the sliding rods are arranged in the box body. A cam handle is rotationally installed on the outer wall, located above the sliding block, of the sliding rod, and the cam handle rotates along the sliding rod, so that extrusion is generated between the cam handle and the sliding block, the sliding rod tends to move upwards, then the clamping plate is driven to move upwards, and the clamping plate and the sliding block tend to extrude each other; according to the utility model, the mounting plate is fixed on the shell by simultaneously acting on the upper end and the lower end of the flange plate of the shell, so that the mechanical connection after electrical connection of the jack box and the bus duct is realized, the stability of electrical connection is relatively ensured, and compared with the prior art, the operation is convenient and rapid, and the mounting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plug-in boxes, in particular to a plug-in box for bus ducts. Background Art

[0002] The plug-in box for bus ducts belongs to the accessories of bus ducts, mainly for extending and expanding the branch lines of bus ducts. Generally, a molded case circuit breaker is installed in the plug-in box. It is connected to the bus duct through pins. The pins are connected to the incoming line end of the circuit breaker, and the electrical equipment is connected to the outgoing line end of the circuit breaker. The circuit breaker is used for circuit breaking and protection, so as to shunt the current of the main line of the bus duct to the electrical equipment, which is very convenient for use and maintenance.

[0003] After the existing plug-in box is electrically connected to the bus duct, it is usually fixed on the bus duct by the pressure generated by screwing bolts and nuts to drive the clamping plate. The installation efficiency is low, and it is necessary to pre-drill holes for the bolts according to the width of the bus duct housing, so the versatility is poor. Therefore, a plug-in box for bus ducts is needed to meet people's needs. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a plug-in box for bus ducts to solve the problems put forward in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A plug-in box for bus ducts, including a bus duct and a plug-in box. The plug-in box includes a box body, a terminal block and a protective door. Installation plates are connected to both ends of the plug-in box. Two sliders are movably installed in each installation plate. A slide bar is vertically slidably installed in each slider. A cam handle is rotatably installed on the outer wall of the slide bar above the slider. A clamping plate is movably connected to the outer wall of the slide bar below the slider. The bus duct includes a housing and a copper bar. The housing is in an I shape, and the flange plate at the top of the housing is located between the installation plate and the clamping plate.

[0006] Preferably, a chute is opened on the installation plate. The chute is parallel to the long side direction of the installation plate. The two sliders in the same installation plate are both slidably adapted in the same chute.

[0007] Preferably, support grooves are opened on both sides of the chute. The support grooves have the same length as the chute. Both ends of the slider are connected with support blocks, and the support blocks are slidably adapted in the support grooves.

[0008] Preferably, a slide hole is opened on the slider. The slide hole runs through the slider from top to bottom, and the slide bar is slidably adapted in the slide hole.

[0009] Preferably, an eccentric shaft is arranged on the outer wall of the slide bar above the slider, and the cam handle is eccentrically rotatably connected to the eccentric shaft.

[0010] Preferably, a rubber washer is sleeved on the sliding rod, and the rubber washer is located between the cam handle and the slider.

[0011] Preferably, a thread is provided on the outer wall of the sliding rod below the slider, and a threaded hole that completely penetrates is provided on the clamping plate, and the thread is threadedly connected with the threaded hole.

[0012] The beneficial effects of the present utility model are:

[0013] In the present utility model, by rotating the cam handle along the sliding rod, extrusion is generated between the cam handle and the slider, so that the sliding rod has an upward movement tendency, and then drives the clamping plate to move upward, so that a mutual extrusion tendency is generated between the clamping plate and the slider, and at the same time acts on the upper and lower ends of the flange plate of the housing, so that the mounting plate can be fixed on the housing, thereby realizing the mechanical connection after the electrical connection between the plug-in box and the busbar, relatively ensuring the stability of the electrical connection, and compared with the prior art, the operation is convenient and fast, and the installation efficiency is improved.

[0014] In the present utility model, through the movable connection of the slider in the mounting plate, the position of the slider in the mounting plate can be changed, so that the positions of the two sliders in the same mounting plate can be freely adjusted according to the housing width of the busbar, and the fixing operation can still be carried out after adjustment. Compared with the prior art, the pre-drilling treatment of the mounting plate is avoided, and the versatility of the plug-in box is improved. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of a plug-in box for a busbar proposed by the present utility model;

[0016] Figure 2 is a schematic internal structure diagram of a plug-in box for a busbar proposed by the present utility model;

[0017] Figure 3 is a schematic front sectional structure diagram of a mounting plate of a plug-in box for a busbar proposed by the present utility model;

[0018] Figure 4 is a plug-in box for a busbar proposed by the present utility model Figure 3 The enlarged structure diagram at A in;

[0019] Figure 5 is a schematic top sectional structure diagram of a mounting plate of a plug-in box for a busbar proposed by the present utility model;

[0020] Figure 6 is a schematic side sectional structure diagram of an eccentric shaft of a plug-in box for a busbar proposed by the present utility model.

[0021] In the figure: 1, busbar trunking; 2, plug-in box; 3, box body; 4, terminal; 5, protective door; 6, mounting plate; 7, slider; 8, slide bar; 9, cam handle; 10, clamping plate; 11, housing; 12, copper bar; 13, chute; 14, support groove; 15, support block; 16, sliding hole; 17, eccentric shaft; 18, rubber washer; 19, thread; 20, threaded hole. Detailed implementation manners

[0022] 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.

[0023] Refer to Figures 1-6 , a plug-in box for a busbar trunking, including a busbar trunking 1 and a plug-in box 2. The plug-in box 2 includes a box body 3, a terminal 4 and a protective door 5. Mounting plates 6 are connected to both ends of the plug-in box 2. Two sliders 7 are movably installed in each mounting plate 6. A slide bar 8 is vertically slidably installed in each slider 7. A cam handle 9 is rotatably installed on the outer wall of the slide bar 8 above the slider 7. A clamping plate 10 is movably connected to the outer wall of the slide bar 8 below the slider 7. The busbar trunking 1 includes a housing 11 and a copper bar 12. The housing 11 is in an I shape, and the flange plate at the top of the housing 11 is located between the mounting plate 6 and the clamping plate 10.

[0024] By rotating the cam handle 9 along the slide bar 8, extrusion is generated between the cam handle 9 and the slider 7, so that the slide bar 8 has a tendency to move upward, and then drives the clamping plate 10 to move upward, so that a mutual extrusion tendency is generated between the clamping plate 10 and the slider 7, and at the same time, it acts on the upper and lower ends of the flange plate of the housing 11, so that the mounting plate 6 is fixed on the housing 11, thereby realizing the mechanical connection after the electrical connection between the plug-in box 2 and the busbar trunking 1, relatively ensuring the stability of the electrical connection. Compared with the prior art, the operation is convenient and fast, and the installation efficiency is improved. Through the movable connection of the slider 7 in the mounting plate 6, the position of the slider 7 in the mounting plate 6 can be changed, so that the positions of the two sliders 7 in the same mounting plate 6 can be freely adjusted according to the width of the housing 11 of the busbar trunking 1, and the fixing operation can still be performed after the adjustment. Compared with the prior art, the pre-drilling treatment of the mounting plate 6 is avoided, and the versatility of the plug-in box 2 is improved.

[0025] Specifically, in this embodiment, a chute 13 is opened on the mounting plate 6. The chute 13 is parallel to the long side direction of the mounting plate 6. The two sliders 7 in the same mounting plate 6 are both slidably adapted in the same chute 13 to provide a position adjustment space for the slider 7.

[0026] Specifically, in this embodiment, support grooves 14 are formed on both sides of the sliding groove 13. The support grooves 14 have the same length as the sliding groove 13. Support blocks 15 are connected to both ends of the slider 7. The support blocks 15 are slidably fitted in the support grooves 14, ensuring that the slider 7 can be adjusted horizontally in position and restricting the vertical movement of the slider 7 to prevent the slider 7 from separating from the mounting plate 6. At the same time, support is provided for the slider 7, causing the clamping plate 10 to produce a squeezing effect.

[0027] Specifically, in this embodiment, a sliding hole 16 is formed in the slider 7. The sliding hole 16 penetrates the slider 7 from top to bottom. The sliding rod 8 is slidably fitted in the sliding hole 16, and the sliding hole 16 facilitates the vertical movement of the sliding rod 8.

[0028] Specifically, in this embodiment, an eccentric shaft 17 is provided on the outer wall of the sliding rod 8 above the slider 7. The cam handle 9 is eccentrically rotatably connected to the eccentric shaft 17. The eccentric shaft 17 provides a rotation fulcrum for the cam handle 9, ensuring that the cam handle 9 rotates around the eccentric shaft 17 and preventing the cam handle 9 from separating from the sliding rod 8.

[0029] Specifically, in this embodiment, a rubber washer 18 is sleeved on the sliding rod 8. The rubber washer 18 is located between the cam handle 9 and the slider 7. The rubber washer 18 deforms under the rotation of the cam handle 9, thereby increasing the friction between the cam handle 9 and the slider 7, restricting the natural rotation after the cam handle 9 rotates, and improving the stability after the busbar trunking 1 is connected to the plug-in box 2.

[0030] Specifically, in this embodiment, a thread 19 is provided on the outer wall of the sliding rod 8 below the slider 7. A threaded hole 20 that completely penetrates is formed in the clamping plate 10. The thread 19 is threadedly connected to the threaded hole 20 to realize the connection between the sliding rod 8 and the clamping plate 10, and to a certain extent restrict the vertical movement of the clamping plate 10, thereby achieving the purpose of the clamping plate 10 following the vertical movement of the sliding rod 8. And the distance between the clamping plate 10 and the slider 7 can be adjusted by screwing the sliding rod 8, so as to realize the adjustment of the clamping force according to the thickness of the flange plate of the housing 11.

[0031] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A plug-in box for a bus duct, comprising a bus duct (1) and a plug-in box (2), characterized in that: The plug-in box (2) comprises a box body (3), a wiring terminal (4) and a protective door (5); both ends of the plug-in box (2) are connected to mounting plates (6); two sliders (7) are movably mounted in each mounting plate (6); a slide bar (8) is vertically slidably mounted in each slide bar (7); a cam handle (9) is rotatably mounted on the outer wall of the slide bar (8) above the slide bar (7); a clamping plate (10) is movably connected to the outer wall of the slide bar (8) below the slide bar (7); the bus duct (1) comprises a shell (11) and a copper bar (12); the shell (11) is in an I-shape; a flange plate at the top of the shell (11) is located between the mounting plate (6) and the clamping plate (10).

2. A plug-in box for bus duct according to claim 1, characterized in that: The mounting plate (6) is provided with a slide groove (13), the slide groove (13) is parallel to the long side direction of the mounting plate (6), and two sliders (7) located in the same mounting plate (6) are both slidably fitted in the same slide groove (13).

3. A plug-in box for bus duct according to claim 2, characterized in that: Support grooves (14) are provided on both sides of the slide groove (13), and the length of the support groove (14) is the same as that of the slide groove (13). Both ends of the slider (7) are connected to support blocks (15), and the support blocks (15) are slidably fitted in the support grooves (14).

4. The plug-in box for bus duct according to claim 1, characterized in that: The slide block (7) is provided with a slide hole (16), which penetrates the slide block (7) from top to bottom, and the slide rod (8) is slidably fitted in the slide hole (16).

5. The plug-in box for bus duct according to claim 1, characterized in that: An eccentric shaft (17) is arranged on the outer wall of the slide bar (8) located above the slide block (7), and the cam handle (9) is eccentrically rotatably connected to the eccentric shaft (17).

6. The plug-in box for bus duct according to claim 1, characterized in that: The slide bar (8) is sleeved with a rubber washer (18), and the rubber washer (18) is located between the cam handle (9) and the slide block (7).

7. The plug-in box for bus duct according to claim 1, characterized in that: The outer wall of the slide bar (8) below the slide block (7) is provided with a screw thread (19), and the clamping plate (10) is provided with a completely penetrating threaded hole (20), and the screw thread (19) and the threaded hole (20) are threadedly connected.

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