Lower outgoing line terminal safe to use

Abstract

The utility model discloses a lower outgoing line terminal safe to use, which relates to the field of vacuum circuit breakers, and comprises a terminal body, the terminal body is provided with an accommodating cavity which is through up and down and is used for placing a flexible connector, and two symmetrical side surfaces in the accommodating cavity are respectively mounting surfaces of two sections of flexible connectors. The outer side surface of the terminal body is provided with a contact arm connecting part. The terminal body is located in the hollow part of the solid-sealed polar pole, the contact arm connecting part is located in the side surface of the solid-sealed polar pole, when the flexible connection is connected with the lower outgoing line terminal, the two sections of the flexible connection are placed in the accommodating cavity, then one end of each section of the flexible connection is connected with the corresponding mounting surface in the accommodating cavity, and the other end of each section of the flexible connection is connected with the conducting rod. According to the lower outgoing line terminal, the flexible connection can be installed in the containing cavity, the flexible connection is prevented from being exposed outside and is effectively protected, meanwhile, two sections of flexible connection are connected with the lower outgoing line terminal in the containing cavity, and larger current can be borne.

Description

Technical Field

[0001] The utility model relates to the field of vacuum circuit breakers, in particular to a bottom outlet terminal which is safe to use. Background Art

[0002] The vacuum circuit breaker is named because its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum. It has the advantages of small size, light weight, suitable for frequent operation, and no maintenance required for arc extinguishing. It is widely used in distribution networks. The existing vacuum circuit breaker includes a sealed pole and an upper outlet terminal, a vacuum arc extinguishing chamber, a lower outlet terminal, a flexible connection, and an insulating pull rod located in the sealed pole. The upper end of the vacuum arc extinguishing chamber is connected to the upper outlet terminal, and the flexible connection is connected between the conductive rod at the lower end of the vacuum arc extinguishing chamber and the lower outlet terminal, and the insulating pull rod is connected to the conductive rod. In the existing vacuum circuit breaker, the flexible connection is exposed outside the lower outlet terminal, which makes the flexible connection not effectively protected in the sealed pole. At the same time, the existing outlet terminal can only be connected to a single flexible connection, and the current it can carry is relatively small. Utility Model Content

[0003] The utility model provides a lower outlet terminal that is safe to use, and its main purpose is to overcome the problem in existing vacuum circuit breakers that the flexible connection cannot be effectively protected in the sealed pole after being connected to the outlet terminal, and the outlet terminal can only be connected to a single flexible connection.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A safe bottom outlet terminal comprises a terminal body, wherein the terminal body is provided with an accommodating cavity which passes through from top to bottom and is used for placing a flexible connection, wherein the two symmetrical side surfaces in the accommodating cavity are respectively mounting surfaces of two sections of the flexible connection, and the outer side surface of the terminal body is provided with a contact arm connecting portion.

[0006] Furthermore, two symmetrical groups of countersunk screw holes are provided on the outer side surface of the terminal body, and the countersunk screw holes are communicated with the accommodating cavity, and each group of countersunk screw holes corresponds to a mounting surface of the flexible connection.

[0007] Furthermore, each group of countersunk screw holes consists of three countersunk screw holes arranged one above the other.

[0008] Furthermore, a first wiring hole and four second wiring holes are provided at the end of the contact arm connecting portion. The four second wiring holes are arranged in a rectangular array, and the first wiring hole is located at the center surrounded by the four second wiring holes.

[0009] Furthermore, the contact arm connecting portion and the terminal body are integrally formed.

[0010] Furthermore, a positioning hole is provided on the inner side surface of the accommodating cavity, a limiting copper tube for the conductive rod to pass through is provided in the accommodating cavity, and a positioning column is provided on the outer peripheral surface of the limiting copper tube to be inserted into the positioning hole.

[0011] From the above description of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages: the present invention has a novel structure and an ingenious design. The terminal body is located in the hollow of the sealed pole, and the contact arm connection portion is located in the side of the sealed pole. When the flexible connection is connected to the lower outlet terminal, the two sections of the flexible connection are placed in the accommodating cavity, and then one end of each section of the flexible connection is respectively connected to the corresponding mounting surface in the accommodating cavity, and the other end of each section of the flexible connection is connected to the conductive rod. The lower outlet terminal can install the flexible connection in the accommodating cavity, so that the flexible connection is effectively protected from being exposed to the outside. At the same time, there are two sections of flexible connection in the accommodating cavity connected to the lower outlet terminal, which can carry a larger current. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of the utility model.

[0013] Figure 2 It is a cross-sectional schematic diagram of the present utility model.

[0014] Figure 3 It is a cross-sectional schematic diagram of the present invention at another angle. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0016] Reference Figure 1 and Figure 3 A safe bottom-outlet terminal includes a terminal body 1, wherein the terminal body 1 is provided with an accommodating cavity 2 which passes through from top to bottom and is used for placing a flexible connection 5. The two symmetrical side surfaces in the accommodating cavity 2 are respectively the mounting surfaces of the two sections of the flexible connection 5, and the two symmetrical side surfaces in the accommodating cavity 2 are respectively the side surfaces 21 and the side surfaces 22. The outer side surface of the terminal body 1 is provided with a contact arm connecting portion 3.

[0017] Reference Figure 1 and Figure 3The outer side surface of the terminal body 1 is provided with two symmetrical groups of countersunk screw holes 4, which communicate with the accommodating cavity 2. Each group of countersunk screw holes 4 corresponds to a mounting surface for a flexible connector 5. In this embodiment, each group of countersunk screw holes 4 consists of three countersunk screw holes 4 arranged vertically, each corresponding to a bolt. The two sections of the flexible connector 5 are locked to the side surface 21 and the side surface 22 respectively by bolts passing through the countersunk screw holes 4.

[0018] Reference Figure 1 The end of the contact arm connecting portion 3 is provided with a first wiring hole 31 and four second wiring holes 32. The four second wiring holes 32 are arranged in a rectangular array, with the first wiring hole 31 located at the center of the four second wiring holes 32. In this embodiment, the contact arm connecting portion 3 is integrally formed with the terminal body 1. When the lower outlet terminal is installed, the terminal body 1 is located in the hollow of the sealed pole, and the contact arm connecting portion 3 is located on the side of the sealed pole. Conductive wires can be connected to the first wiring hole 31 and the second wiring hole 32, and the contact arm connecting portion 3 is connected to the contact arm.

[0019] Reference Figure 1 and Figure 2 A positioning hole 23 is provided on the inner side of the accommodating cavity 2, and a limiting copper tube 6 is provided in the accommodating cavity 2 for the conductive rod 7 to pass through. The outer peripheral surface of the limiting copper tube 6 is provided with a positioning column 61 inserted into the positioning hole 23. When the conductive rod 7 is disconnected from the insulating pull rod, it can ensure that the conductive rod 7 moves vertically along the limiting copper tube 6.

[0020] Reference Figure 1 and Figure 3 The terminal body 1 is located within the hollow interior of the sealed pole, and the contact arm connection portion 3 is located within the side of the sealed pole. When the flexible connector 5 is connected to the lower outlet terminal, the two sections of the flexible connector 5 are placed within the accommodating cavity. One end of each section of the flexible connector 5 is then connected to the corresponding side surfaces 21 and 22 within the accommodating cavity 2, respectively. The other ends of each section of the flexible connector 5 are connected to the conductive rod 7. This lower outlet terminal allows the flexible connector 5 to be installed within the accommodating cavity 2, effectively protecting it from exposure. Furthermore, the presence of two sections of the flexible connector 5 within the accommodating cavity 2, connected to the lower outlet terminal, allows it to carry a greater current.

[0021] The above is only a specific implementation method of the present invention, but the design concept of the present invention is not limited to this. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A safe bottom outlet terminal, characterized by: It includes a terminal body, which is provided with an accommodating cavity that runs through from top to bottom and is used to place the soft connection. The two symmetrical side surfaces in the accommodating cavity are respectively the mounting surfaces of two sections of the soft connection. The outer side surface of the terminal body is provided with a contact arm connecting part.

2. The safe bottom outlet terminal according to claim 1, characterized in that: Two symmetrical groups of countersunk screw holes are provided on the outer side surface of the terminal body. The countersunk screw holes are communicated with the accommodating cavity, and each group of countersunk screw holes corresponds to a mounting surface of the flexible connection.

3. The safe bottom outlet terminal according to claim 2, characterized in that: Each group of countersunk screw holes consists of three countersunk screw holes arranged up and down.

4. The safe bottom outlet terminal according to claim 1, characterized in that: A first wiring hole and four second wiring holes are provided at the end of the contact arm connecting portion. The four second wiring holes are arranged in a rectangular array, and the first wiring hole is located at the center surrounded by the four second wiring holes.

5. The safe bottom outlet terminal according to claim 1, characterized in that: The contact arm connecting portion is integrally formed with the terminal body.

6. The safe bottom outlet terminal according to claim 1, characterized in that: A positioning hole is provided on the inner side surface of the accommodating cavity, a limiting copper tube for the conductive rod to pass through is provided in the accommodating cavity, and a positioning column is provided on the outer peripheral surface of the limiting copper tube to be inserted into the positioning hole.

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