CN103177909B - Termination - Google Patents

Abstract

A wiring device (10), comprising a casing (100), an opening (110) is provided on the casing (100), and a fixed contact (20) is arranged inside the casing (100), the fixed contact The position is configured to be opposite to the opening (110), and the wiring device (10) further includes a protective plate assembly (200), which is configured to close the opening (110) in a closed state, and expose the fixed contact (20) in an open state. ). The invention can effectively prevent field operators from contacting live parts, can adapt to cables with different diameters, and can connect two cables or busbars at the same time.

Description

wiring device

technical field

The invention relates to an electrical connection device.

Background technique

Usually, the switch circuit breaker (with fuse) has a frame wiring structure to facilitate the user's on-site wiring (the connecting section of the cable is made on site).

Existing rack wiring structures have only one opening, and cover or housing is used to provide protection to prevent access to dangerous live parts. However, such protection is not enough without other auxiliary measures. In addition, if the switch needs to connect a cable and a bus bar simultaneously, or needs to connect two cables, then such a structure is inconvenient to use.

For example, a conventional rack wiring structure includes steel lugs, fixed contacts and housing, and has only one opening. A single opening causes instability when connecting two cables or a cable and a busbar. Another risk is that when the cable is connected, the operator can easily touch the fixed contacts and steel lugs, and these two parts are live parts, so it is easy to be very dangerous for field operators. As another example, another existing rack wiring structure includes fixed contacts, wire clamps and a housing. This wiring structure has the same problem as the above-mentioned structure.

Contents of the invention

The purpose of the present invention is to provide a new wiring device to overcome the defects of the prior art, which not only facilitates the insertion of multiple cables (or busbars), but also better protects field operators.

For this reason, technical scheme of the present invention is as follows:

A wiring device, comprising a housing, an opening is provided on the housing, a fixed contact is arranged in the housing, and the position of the fixed contact is configured to be opposite to the opening, and the wiring device also includes a protective plate assembly, It is configured to close the opening in a closed state and expose the fixed contact in an open state.

Wherein, the protection plate assembly includes a first protection plate and a second protection plate, which are arranged on opposite sides of the opening, and the first and second protection plates are configured to slide in the housing, so that the protection assembly is closed in the closed position. state to transition between the open state.

Wherein, the housing is provided with a limiting flange, which is configured to correspond to the fixed contact, and is configured to limit the movement of the first and second protection plates within their respective ranges.

Wherein, a sliding groove is also configured in the casing, the first and second protection plates are arranged in the sliding groove, and the limiting flange is arranged in the sliding groove.

The first protection plate is provided with a first operating flange on one side and a first spring on the opposite side; the second protection plate is provided with a second operating flange on one side and A second spring is provided.

A cavity is provided in the housing, and the fastening assembly is accommodated in the cavity, wherein the fastening assembly includes an operating rod, a moving frame connected to the operating rod, and a clamping plate, and the fastening assembly is configured to be operated by operating the operating rod. A lever moves the moving frame and the clamping plate relative to each other and relative to the fixed contact.

The moving frame is sleeved on the operating rod through a hole, the clamping plate is connected to one end of the operating rod, and the clamping plate is located in the moving frame, wherein the moving frame accommodates at least a part of the fixed contact.

The housing is provided with a through hole corresponding to the operating rod.

The positive and progressive effects of the present invention are: it can effectively prevent field operators from touching live parts, it can adapt to cables with different diameters, and it can connect two cables or busbars at the same time.

Description of drawings

Fig. 1 is a schematic partial three-dimensional cross-sectional view of a wiring device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the wiring device in FIG. 1 .

Fig. 3 is a schematic diagram of the protection board.

Fig. 4 is a schematic diagram of a closed state of the protective plate assembly.

Fig. 5 is a schematic diagram of an open state of the protection plate assembly.

Fig. 6 is a schematic diagram of a use state of the wiring device of the present invention.

FIG. 7 is a partial schematic diagram of FIG. 6 .

Fig. 8 is a schematic diagram of another usage state of the wiring device of the present invention.

FIG. 9 is a partial schematic diagram of FIG. 8 .

Fig. 10 is a schematic diagram of another usage state of the wiring device of the present invention.

FIG. 11 is a partial schematic diagram of FIG. 10 .

Fig. 12 is a schematic diagram of another usage state of the wiring device of the present invention.

FIG. 13 is a partial schematic diagram of FIG. 12 .

Explanation of reference signs

1 cable 2 cable 3 cable 4 cable 5 busbar

10 wiring device 20 fixed contacts

100 Shell 110 Opening 120 Sliding groove 130 Chamber 140 Through hole 122 Limiting flange 124 Secondary limiting flange

200 Protection plate assembly 210 First protection plate 220 Second protection plate 212 First operating flange 214 First spring 216 First auxiliary limit flange 218 First flange 222 Second operating flange 224 Second spring 226 Second Auxiliary limiting flange 228 second flange

300 fastening assembly 310 operating rod 320 moving frame 330 clamping plate 322 hole

detailed description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be noted that in the following embodiments, many specific details are described for ease of understanding. However, one skilled in the art will understand that the present invention may be practiced without these details.

As shown in FIG. 1 , a wiring device 10 includes a housing 100 , an opening 110 is provided on the housing 100 , and a fixed contact 20 is provided inside the housing 100 . The fixed contact 20 is connected to the main circuit and plays a conductive role. The position of the fixed contact 20 is configured to face the opening 110 . Preferably, the position of the fixed contact 20 is set at a middle position opposite to the opening 110 .

The housing 100 is provided with a slide slot 120 , in which a protective plate assembly 200 is provided. The protective plate assembly 200 can move in the sliding slot 120 . The protective plate assembly 200 is configured to close the opening 110 in a closed state, and expose the fixed contact 20 opposite to the opening 110 in an open state.

As shown in FIG. 2 , the protective plate assembly 200 includes two protective plates, a first protective plate (upper protective plate) 210 and a second protective plate (lower protective plate) 220 . In the example shown in FIG. 2, the two protective plates have the same structure. Of course, in other embodiments, the two protective plates may adopt different configurations from each other, depending on the application environment. Moreover, in the embodiments of the present invention, the upper protective plate and the lower protective plate are terms used for the orientation in the drawings for the convenience of description, and are not intended to limit the present invention.

As shown in FIG. 3 , the configuration of the protective plate is described. Taking the second protection plate 220 as an example, the protection plate 220 can be configured as a rectangle, with a second operating flange 222 on one side and a second spring 224 on the opposite side. When disposed in the sliding groove 120 , the second operating flange 222 is exposed to the opening 110 , and the second spring 224 is fixed on a side of the sliding groove 120 away from the opening, as shown in FIG. 4 . In this way, when a force is exerted on the second operating flange 222, the second protection plate 220 can move downward. FIG. 4 also shows the first protection plate 210 , which is also provided with the first operating flange 212 and the first spring 214 as mentioned above.

On the inner bottom of the sliding groove 120, a limiting flange 122 is also provided, which is configured to limit the range of movement of the protection plate, that is, the first protective plate 210 is limited to move above the limiting flange 122, and the The second protection plate 220 is limited to move under the limiting flange 122 . The position of the limiting flange 122 corresponds to the position of the fixed contact 20 . Preferably, the limiting flange 122 is configured to correspond to the middle position of the opening 110 , and each of the two sides of the protective plate corresponds to a limiting flange. As shown in FIG. 3 , the limiting flange 122 cooperates with the second flanges 228 on both sides of the protective plate 220 (similarly, also cooperates with the first flanges 218 on both sides of the protective plate 210 ) to complete the limiting action.

As shown in FIG. 5 , the sliding slot 120 is further provided with a secondary limiting flange 124 . Correspondingly, first and second auxiliary limiting flanges 216 and 226 are respectively provided on the protection plate. The first and second auxiliary position-limiting flanges cooperate to assist in positioning the protection plate.

As shown in FIGS. 1 and 2 , the wiring device 10 further includes a fastening assembly 300 installed in the cavity 130 of the housing 100 . The fastening assembly 300 includes an operating rod 310 , a moving frame 320 and a clamping plate 330 . The moving frame 320 and the clamping plate 330 are all connected below the operating rod 310, wherein the operating rod 310 passes through the hole 322 on the moving frame 320 and is inserted into the space inside the frame 320, and the lower end of the operating rod 310 is connected to the The clamping plate 330 , that is, the clamping plate 330 is disposed in the inner space of the frame 320 . The space inside the moving frame 320 also accommodates a part of the fixed contact 20, and this part is used for connecting external cables or busbars. That is, the moving frame 320 can be regarded as sleeved on the fixed contact 20 .

Wherein, the operating rod 300 can be operated through the through hole 140 on the upper part of the casing 100 , and the through hole 140 communicates with the chamber 130 . It should be noted that the term "upper" is a term used for the orientation in the drawings for the convenience of description, and is not intended to limit the present invention. In other application environments, the chamber and the through hole can be arranged in different orientations.

By operating the operating lever 310 , the moving frame 320 and the clamping plate 330 can move up and down relative to each other, and can also move up and down relative to the fixed contact 20 . Likewise, the terms "upper" and "lower" here are used for the orientation of the drawings for the convenience of description, but not to limit the present invention. In other examples, other relative orientations are also possible.

The operating rod 310 , the moving frame 320 and the clamping plate 330 can be configured as screw parts, and the moving frame 320 and the clamping plate 330 can move up and down by turning the operating rod 310 . Those skilled in the art can understand that using threads to convert rotation into translation is a well-known attempt in the art, which will not be repeated here. Although in the embodiment of the present invention, it will be described that the operating rod 310, the moving frame 320 and the clamping plate 330 are screw parts, however, those skilled in the art can understand that any suitable mechanical mechanism can be used to realize the moving frame 320 and the movement of the clamping plate 330.

6-13 illustrate the states of embodiments of the present invention in various application environments. As mentioned above, when not in use, the protective plate assembly 200 is in a closed state to seal the opening 110 .

When a cable 1 is connected, as shown in FIG. 6 , the second operating flange 222 of the second protective plate 220 exerts a force to move it downward, thereby exposing the fixed contact 20 and the fastening assembly 300 . The cable 1 is inserted into the opening, under the fixed contact 20 .

Then, the moving frame 320 and the clamping plate 330 are moved relative to each other and relative to the fixed contact 20 so as to clamp the cable 1 on the fixed contact 20 , as shown in FIG. 7 .

As shown in FIG. 6 , after the cable 1 is connected, the second operating flange 222 is released, and the second protection plate 220 moves upward under the action of the spring 224 to close the opening 110 . Obviously, due to the connection of the cable 1 , the protective plate assembly 200 cannot completely seal the opening 110 , but those skilled in the art can understand that such sealing is enough to prevent the operator from contacting the live parts.

Although it is shown in FIGS. 6 and 7 that the cable 1 is connected under the fixed contact 20, obviously, the first protective plate 210 can also be moved, and the cable 1 can be inserted above the fixed contact 20, and clamped. Closely between the fixed contact 20 and the clamping plate 330 .

Since the components of the fastening assembly 300 are movable relative to each other and relative to the fixed contact 20, different cable diameters can be accommodated. As shown in Figures 8 and 9, when connecting a cable 2 with a larger diameter, by adjusting the relative position between the components of the fastening assembly 300 and the relative position with the fixed contact 20, the cable 2 with a large diameter can be accommodated. .

Similarly, Figures 10 and 11 show the case where two cables are connected. The same as before, operate the first and second protective plates 210 and 220 respectively to connect the cables 3 and 4, adjust the fastening assembly 300 to clamp the cable 3 between the moving frame 320 and the fixed contact 20, and connect the wires The cable 4 is clamped between the fixed contact 20 and the clamping plate 330 .

12 and 13 show a similar connection, except that the cables 4 are replaced by bus bars 5 .

From the foregoing description, it can be seen that the present invention can effectively prevent field operators from contacting live parts and reduce the risk of electric shock. Moreover, the structure of the present invention can adapt to cables with different diameters, and can also install two cables (busbars) at the same time.

Although the foregoing has been described in connection with preferred embodiments of the invention, the scope of the invention is not limited to the specific examples described, but variations, such as permutations, modifications and equivalents, are possible within the scope defined by the claims. Therefore, the scope of the present invention should be construed to cover such replacements, modifications and equivalents.

Claims (6)

1. a termination (10), comprise shell (100), this shell (100) is provided with opening (110), a fixed contact (20) is provided with in this shell (100), the placement configurations of this fixed contact is relative with this opening (110), it is characterized in that, baffle assembly (200) is also comprised at this termination (10), it closes this opening (110) under being configured to closure state, this fixed contact (20) is exposed under open mode, this baffle assembly (200) comprises the first baffle (210) and the second baffle (220), be located at the opposite side of this opening (110), this first and second baffle (210, 220) be configured to slide in this shell (100), thus this baffle assembly (200) is transformed between described closure state and described open mode, and this first baffle (210) is provided with the first operation flange (212) in its side, the first spring (214) is provided with in relative side, this second baffle (220) is provided with the second operation flange (222) in its side, be provided with the second spring (224) in relative side.

2. termination according to claim 1 (10); it is characterized in that; defining flange (122) is provided with in this shell (100); it is corresponding with this fixed contact (20) that it is configured to position; and be configured to limit this first and second baffle (210,220) move in respective scope.

3. termination according to claim 2 (10); it is characterized in that; also be configured with sliding tray (120) in this shell (100), this first and second baffle is located in this sliding tray, and this defining flange is located in this sliding tray.

4. termination according to claim 1 (10), it is characterized in that, chamber (130) is provided with in this shell (100), fastening assembly (300) is held in this chamber, wherein, this fastening assembly (300) comprises action bars (310), the movable frame (320) be connected with this action bars and clamp (330), and this fastening assembly is constructed by this action bars of operation and this movable frame and clamp is moved relative to each other and moves relative to this fixed contact.

5. termination according to claim 4 (10), it is characterized in that, this movable frame passing hole (322) is set on this action bars (310), this clamp is connected to one end of this action bars (330), this clamp is positioned at this movable frame, and wherein this movable frame holds this fixed contact at least partially.

6. termination according to claim 4 (10), is characterized in that, this shell (100) is provided with the through hole (140) corresponding with this action bars (310).