CN214542552U - Auxiliary wire connector for power supply replacement - Google Patents

Abstract

The utility model relates to a supplementary connector is changed to power, it includes insulating base member and sets up two at least cable interface parts in the insulating base member be provided with in the cable interface part: a receiving hole for receiving an end of an external cable; conductive sheets in each of the cable interface parts electrically connected to each other; a first fixing portion for fixing the metal core of the external cable and the conductive sheet together and maintaining an electrical communication state; and a second fixing portion for fixing an external cable into the receiving hole. The utility model discloses a power is changed auxiliary connector can improve the security when the power is changed under the condition of ensureing reliable electricity to be connected.

Description

Auxiliary wire connector for power supply replacement

Technical Field

The utility model relates to a supplementary connector is changed to power, its security when can improving the power and change under the condition of ensureing reliable electricity to be connected.

Background

There are many scenarios where electrical equipment needs to be replaced in a non-powered state. For example, after the substation communication power supply is in service for a long time or when upgrading and reconstruction are needed, new components, modules and the like need to be used for replacing old components, modules and the like. When performing a corresponding replacement operation, it is often required to ensure that the load (e.g. the consumer or consumer module) is operating normally without power interruption throughout the entire operation. Therefore, such an operation may also be referred to as a charging replacement operation.

In such a live replacement operation, the load is supplied with auxiliary power using an auxiliary power source (e.g., a battery and/or a backup power source) for the purpose of not powering down the load. For the dc load, a secondary battery is generally used for auxiliary power supply. For ac loads, a backup power source is typically used for auxiliary power.

Specifically, the whole live replacement operation can be roughly divided into the following stages in the sequence:

a preparation stage: when in operation, an auxiliary power supply (a storage battery and/or a standby power supply) is connected with a load, and the auxiliary power supply and old power supply equipment are used for supplying power in parallel;

and (3) dismantling the old stage: disconnecting the components, modules and the like to be replaced from the load and then removing the components, modules and the like from the site;

and (3) a mounting position reconstruction stage: according to the installation requirements of new components, modules and the like, the site installation points are modified;

and (4) loading and renewing: installing new components, modules and the like to a preset point position, and connecting the new components, the modules and the like with a load to realize the parallel power supply of new power supply equipment and an auxiliary power supply; and

and (3) ending: the auxiliary power supply is detached and the site is cleaned.

In the operation process, constructors need to use cables to temporarily and electrically connect a power supply and input/output points on the load under the condition of ensuring that the load is not powered off, so that the operation risk is high. Further, during the field work, a large operation such as movement of the equipment and adjustment of the attachment frame is often performed, and there is a concern that an accident may occur due to accidental contact with these live cables. In addition, when drilling, cutting and other operations are performed, foreign matters such as metal chips are easy to generate and splash out, so that potential safety hazards are caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems in the prior art, the utility model provides a power replacement auxiliary connector, its security when can improving the power and change under the condition of ensureing reliable electricity to be connected.

In order to achieve the above object, the present invention provides the following technical solutions.

An auxiliary connector for power supply replacement, comprising an insulating base body and at least two cable interface portions provided in the insulating base body, characterized in that: a receiving hole for receiving an end of an external cable; conductive sheets in each of the cable interface parts electrically connected to each other; a first fixing portion for fixing the metal core of the external cable and the conductive sheet together and maintaining an electrical communication state; and a second fixing portion for fixing an external cable into the receiving hole.

The utility model discloses a power is changed auxiliary connector and is used for establishing reliable electricity and connect between load and auxiliary power supply. When the live replacement operation is performed, external cables for connecting with the load and the auxiliary power supply are respectively inserted into different cable interface parts of the power supply replacement auxiliary connector, and the load and the auxiliary power supply are electrically connected by using the conductive sheets. Since there are two fixing portions in each cable interface portion, the fixing of the cable is very reliable. In addition, the conductive sheet and the end of the cable in the electrically connected state are both located within the insulating base, so that it is possible to advantageously prevent a person, a tool, a scattered foreign matter, or the like from accidentally contacting the power supply line of the auxiliary power supply, thereby improving safety.

Preferably, the second fixing portion is insulated from both the conductive sheet and the external cable.

When the second fixing part is used for fixing the external cable, the user does not need to worry about accidental electric shock, and the position of the external cable can be flexibly adjusted at any time. After the adjustment is completed, the first fixing portion is used to fix the end of the external cable.

Preferably, the insulating base is in the shape of a horizontally placed disk, the opening of the cable interface is located on the outer peripheral side of the insulating base, and a central through hole is opened at the center of the insulating base, and the central through hole extends through the insulating base in the vertical direction.

By using the above shape and structure of the insulating base body, it is possible to easily place a plurality of power supply replacement auxiliary connectors in an up-down overlapping manner, which makes it possible to effectively utilize the space during the operation.

Preferably, a groove-like opening is further formed in the insulating base, the groove-like opening extending radially outward in the horizontal direction from the central through hole, and an opening width of the groove-like opening is smaller than a diameter of the central through hole. More preferably, the power supply replacement auxiliary connector further comprises a pillar having a D-shaped cross section obtained by cutting a part of a circular shape, the D-shaped cross section satisfying the following dimensional relationship: the largest diameter of the D-shaped cross-section is smaller than the diameter of the central through-hole and larger than the opening width of the slot-like opening, and the smallest diameter of the D-shaped cross-section is smaller than the opening width of the slot-like opening.

The power-supply-replacement auxiliary connector can be conveniently assembled to or disassembled from the upright post along the horizontal direction by utilizing the upright post and the groove-shaped opening which are matched with each other. When a large number of power supplies need to be stacked to replace the auxiliary connector, the horizontal dismounting operation is very convenient, and accidental collision is not easy to occur.

Preferably, the upright is rotatable about its own axis.

In the case of a rotatable column, the object of preventing or allowing the power-supply replacement auxiliary connector from coming off the column can be achieved simply by rotating the column.

Preferably, the conductive sheet is provided with a threaded hole, a position of the first fixing portion corresponds to a position of the threaded hole, and a position of the second fixing portion is closer to the opening of the cable interface portion than the position of the first fixing portion.

The first fixing part is used for carrying out electrified connection, and the threaded holes formed in the conducting strips can provide reliable electric connection while achieving fastening. The second fixing portion is used without electrical connection. Since the second fixing portion is located close to the opening of the cable interface portion, it is possible to prevent foreign matter or the like from entering into the housing hole by the close engagement between the second fixing portion and the insulating sheath of the external cable.

Preferably, the first fixing portion includes a screw and a conductive pressing piece fixed at a middle position of the screw.

With the conductive pressure piece, the end of the metal core of the external cable and the conductive piece in the cable interface portion can be tightly pressed against each other, thereby ensuring reliable electrical connection.

Preferably, the second fixing portion includes a screw and an insulation head fixed to a tip of the screw.

The pressing/loosening operation of the screw is very convenient, and the insulation pressure head can directly press the insulation skin of the external cable, so that the position of the external cable can be conveniently adjusted in an insulation state by utilizing the second fixing part.

Utilize the utility model discloses a supplementary connector is changed to power can improve the security when the power is changed under the condition of ensureing reliable electricity to be connected.

Drawings

Fig. 1 is a schematic plan view of the power supply replacement auxiliary connector of the present invention.

Fig. 2 is a plan view showing one end portion of the cable.

Fig. 3 is a sectional view of a cable port of the power exchange auxiliary connector of fig. 1.

Description of reference numerals:

1: an auxiliary connector; 10A, 10B, 10C: a cable interface; 11: a central through hole; 12: a slot-like opening; 13: a conductive sheet; 130: a threaded hole; 14: an insulating substrate; 101: an accommodating hole; 102: a first fixed part; 1021: a screw; 1022: conducting tabletting; 103: a second fixed part; 1031: a screw; 1032: an insulating indenter; 200: a column; 300: a cable; 301: an insulating skin; 302: a metal core; 303: and (7) fixing holes.

Detailed Description

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following embodiments, for convenience of explanation, examples of the power replacement auxiliary connector of the present invention are shown, but the present invention is not limited thereto.

As shown in fig. 1, the power replacement auxiliary connector 1 of the present embodiment (hereinafter simply referred to as the auxiliary connector 1) has an insulating base 14 and three cable interface portions 10A, 10B, and 10C provided in the insulating base 14. The cable interface 10A is used for connection with a battery (not shown), the cable interface 10B is used for connection with a load (not shown), and the cable interface 10C is used for connection with a backup power source (not shown). The cable interface parts 10A, 10B, and 10C are each provided therein with a conductive sheet 13. To achieve the power supply, the conductive sheets 13 in the cable interface parts 10A, 10B, and 10C need to be electrically connected to each other. Fig. 1 shows a case where one conductive sheet 13 integrally formed of a metal sheet extends into the cable interface parts 10A, 10B, and 10C.

The number of cable interfaces is not limited to three in the present embodiment, and may be changed to two or four or more as needed. For example, the cable interface 10C may be omitted when an ac power supply is not required, and the cable interface 10A may be omitted when a dc power supply is not required.

The insulating base 14 is in the shape of a horizontally placed disk, and the openings of the cable interface portions 10A, 10B, and 10C are located on the outer peripheral side of the insulating base 14. The center of the insulating base 14 is provided with a central through hole 11, and the central through hole 11 extends through the insulating base 14 along the vertical direction. A slot-like opening 12 is also formed in the insulating base 14, the slot-like opening 12 extending radially outward in the horizontal direction from the central through hole 11. The opening width of the slot-like opening 12 is smaller than the diameter of the central through hole 11.

The auxiliary connector 1 further includes a post 200. The cross section of the pillar 200 is a D-shaped cross section obtained by cutting a part of a circular shape. The maximum diameter of the D-shaped section is the diameter of an external circle of the D-shaped section, and the minimum diameter of the D-shaped section is the diameter of a straight line edge of the D-shaped section perpendicular to the center of the circle. The D-shaped cross-section of the upright 200 has the following relationship with the diameter of the central through-hole 11 and the opening width of the slot-like opening 12: the maximum diameter of the D-shaped cross section is smaller than the diameter of the central through hole 11 and larger than the opening width of the slot-like opening 12; and the smallest diameter of the D-shaped cross-section is smaller than the opening width of the slot-like opening 12.

In the state shown in fig. 1, the direction of the maximum diameter of the D-shaped cross section of the pillar 200 is substantially parallel to the direction of the opening width of the slot-like opening 12, so that the pillar 200 does not come out of the slot-like opening 12. After the insulating base 14 is rotated by 90 ° in the clockwise direction or the counterclockwise direction with respect to the post 200 from the state shown in fig. 1, the direction of the minimum diameter of the D-shaped cross section of the post 200 is substantially parallel to the direction of the opening width of the slot-like opening 12, and at this time, the post 200 is allowed to come out of the slot-like opening 12.

Preferably, the mast 200 may be arranged to be rotatable about the axis of the mast 200 itself. In this way, when it is necessary to attach the insulating base 14 to the column 200 or to remove the insulating base 14 from the column 200, the column 200 may be rotated so that the direction of the minimum diameter of the D-shaped cross section of the column 200 is substantially parallel to the direction of the opening width of the slot-like opening 12. When it is not desired to detach the insulating base 14 from the column 200, the column 200 may be rotated to the state shown in fig. 1.

Even if the column 200 cannot rotate, the same technical effect can be achieved by rotating the insulating base 14 with respect to the column 200.

The cable 300 shown in fig. 2 is an example of an external cable used in the present embodiment. To facilitate electrical connection, at the end of the cable 300, a metal core 302 is caused to protrude from an insulating sheath 301, and a fixing hole 303 is formed at the tip of the metal core 302. The cable 300 is used for connection with the cable interface parts 10A, 10B, and 10C.

The three cable interface parts 10A, 10B, and 10C have the identical configuration. The configuration of the cable interface portion 10A will be described in detail below, and a repeated description of the cable interface portions 10B and 10C will be omitted.

Fig. 3 shows a vertical cross section of the cable interface 10A. The cable interface 10A is provided with a housing hole 101, a conductive sheet 13, a first fixing portion 102, and a second fixing portion 103. The receiving hole 101 extends in the horizontal direction and receives an end portion of the cable 300 shown in fig. 2. The end of the conductive plate 13 extends to a position spaced apart from the opening of the receiving hole 101. In addition, a screw hole 130 is opened in the distal end of the conductive plate 13. The first fixing portion 102 and the second fixing portion 103 are used to fix the cable 300 into the housing hole 101.

The first fixing portion 102 is located at a position corresponding to the screw hole 130, and is used for fixing the metal core 302 of the cable 300 and the conductive sheet 13 together, so that the metal core 302 and the conductive sheet 13 can be maintained in an electrical communication state. The second fixing portion 103 is located closer to the opening of the cable interface 10A than the first fixing portion 102 is. The second fixing portion 103 can fix the cable 300 into the housing hole 101 while maintaining insulation from both the metal core 302 and the conductive sheet 13.

The first fixing portion 102 includes a screw 1021 and a conductive pressing piece 1022 fixed at a middle position of the screw 1021. The screw 1021 and the conductive presser plate 1022 are each made of a metal material. As shown in fig. 3, the lower end portion of the screw 1021 passes through the fixing hole 303 of the metal core 302 and is screwed into the screw hole 130 of the conductive plate 13. When the screw 1021 is tightened, the conductive pressing piece 1022 presses the metal core 302, so that the metal core 302 is not only fixed, but also a positive and reliable electrical connection is established between the metal core 302 and the conductive sheet 13.

The second fixing portion 103 includes a screw 1031 and an insulation indenter 1032 fixed to a lower end of the screw 1031. The insulation indenter 1032 is made of an insulating material, and can prevent the screw 1031 from contacting the metal core 302 and the conductive sheet 13. In the state shown in fig. 3, when the screw 1031 is screwed downward, the insulation indenter 1032 presses the insulation sheath 301 of the cable 300.

The second fixing portion 103 merely performs compression fixing of the cable 300, and thus the fixing/unfixing operation of the second fixing portion 103 is very rapid and convenient compared to the first fixing portion 102, but the fastening force of the second fixing portion 103 is weak. In addition, when the second fixing portion 103 is adjusted, there is no fear of electric shock due to contact with the screw 1031.

In the process of carrying out the live replacement operation, the auxiliary power supply is connected with the load by using the auxiliary connector 1, so that the parallel power supply of the auxiliary power supply and the old power supply is realized. The connection between the old power source and the load is then disconnected and replaced with a new device, module, etc. And then, connecting the new power supply with the load to realize the parallel power supply of the auxiliary power supply and the new power supply. Finally, the auxiliary power supply and the temporarily used cable 300, etc. are removed, and the entire operation is completed.

When the auxiliary power source and the load are connected by the cable 300, one end of the cable 300 may be fixed to the receiving hole 101 by a weak fastening force by the insulation indenter 1032 of the second fixing portion 103. At this time, the cable 300 is still movable within the housing hole 101 to a small extent, but is not easily removed from the housing hole 101. Then, the fixing holes 303 of the adjusting cable 300 are aligned with the screw holes 130 of the conductive plate 13. Then, the screw 1021 of the first fixing portion 102 is inserted through the fixing hole 303 and screwed into the screw hole 130 until the conductive pressing piece 1022 is tightly pressed against the metal core 302. For safety reasons, the second fixing portion 103 may be further fastened thereafter. After the fastening, the insulation head 1032 and the insulation sheath 301 which are tightly attached to each other can effectively prevent foreign matters from entering the receiving hole 101.

One auxiliary connector 1 corresponds to one electric terminal of the load. In practice, a plurality of auxiliary connectors 1 are used, depending on the number of electrical terminals involved. A plurality of auxiliary connectors 1 may be arranged on the same post 200 one above the other.

As shown in fig. 1 and 3, the conductive sheet 13 and the metal core 302 exposed at the end of the cable 300 are both inside the insulating base 14. There are no exposed conductive portions outside the insulating base 14. Therefore, the accidental contact between the bodies, tools and the like of field construction personnel and the power supply line of the auxiliary power supply can be prevented, and the accidental contact between floating dust, splashes and the like generated in the process of modifying the installation position of new equipment and the power supply line of the auxiliary power supply can be prevented. Therefore, utilize the utility model discloses an auxiliary connector 1 can realize the reliable electricity between auxiliary power supply and the load and be connected, improves the security simultaneously.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be readily understood by those skilled in the art that various modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention as set forth in the claims. The scope of the claims, therefore, is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims (9)

1. An auxiliary connector for power supply replacement, comprising an insulating base body and at least two cable interface portions provided in the insulating base body, characterized in that:

a receiving hole for receiving an end of an external cable;

conductive sheets in each of the cable interface parts electrically connected to each other;

a first fixing portion for fixing the metal core of the external cable and the conductive sheet together and maintaining an electrical communication state; and

a second fixing portion for fixing an external cable into the receiving hole.

2. The electrical power replacement auxiliary connector according to claim 1,

the second fixing part is insulated from the conducting plate and the external cable.

3. The power supply replacement auxiliary connector according to claim 1 or 2,

the insulating base body is in the shape of a horizontally placed disc,

the opening of the cable interface is located on the outer peripheral side of the insulating base body, and

the center of the insulating base body is provided with a central through hole, and the central through hole extends through the insulating base body along the vertical direction.

4. The electrical power replacement auxiliary connector according to claim 3,

a groove-like opening is further formed in the insulating base body, extends from the central through hole to the outside in the horizontal direction in the radial direction, and

the opening width of the slot-like opening is smaller than the diameter of the central through hole.

5. The electrical power replacement auxiliary connector according to claim 4,

the auxiliary connector for replacing the power supply further comprises a stand column, the cross section of the stand column is a D-shaped cross section obtained by cutting off a part of a circular shape, and the D-shaped cross section meets the following dimensional relationship:

the maximum diameter of the D-shaped cross section is smaller than the diameter of the central through hole and larger than the opening width of the slot-like opening, and

the smallest diameter of the D-shaped cross-section is smaller than the opening width of the slot-like opening.

6. The electrical power replacement auxiliary connector according to claim 5,

the upright is able to rotate about its own axis.

7. The power supply replacement auxiliary connector according to claim 1 or 2,

the conducting strip is provided with a threaded hole, the position of the first fixing part corresponds to the position of the threaded hole, and

the second fixing portion is located closer to the opening of the cable interface portion than the first fixing portion.

8. The electrical power replacement auxiliary connector as recited in claim 7,

the first fixing part comprises a screw and a conductive pressing sheet fixed at the middle section of the screw.

9. The electrical power replacement auxiliary connector as recited in claim 7,

the second fixing part comprises a screw and an insulation pressure head fixed at the tail end of the screw.

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