CN211238125U - Binding post for air switch - Google Patents
Binding post for air switch Download PDFInfo
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- CN211238125U CN211238125U CN202020203425.3U CN202020203425U CN211238125U CN 211238125 U CN211238125 U CN 211238125U CN 202020203425 U CN202020203425 U CN 202020203425U CN 211238125 U CN211238125 U CN 211238125U
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- connecting part
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- air switch
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Abstract
The embodiment of the application provides a binding post for air switch includes: the wire connecting device comprises a wire connecting cylinder, a wire connecting plug and an expansion pipe, wherein one end of the wire connecting cylinder is provided with a wire socket, the wire connecting plug comprises a first connecting part and a second connecting part, the central axis of the first connecting part is superposed with the central axis of the wire connecting cylinder, and one end of the first connecting part is connected with the other end of the wire connecting cylinder; a second connecting part is arranged on one side of the other end of the first connecting part, the second connecting part is parallel to the first connecting part, the second connecting part is matched with the wire inlet hole of the air switch, and the upper end face of one end, away from the first connecting part, of the second connecting part is a horizontal end face; the one end, first connecting portion and the wiring section of thick bamboo outside parcel that the second connecting portion are close to first connecting portion have the expansion pipe. The application improves the safety and convenience of the air switch during wiring.
Description
Technical Field
The application relates to the technical field of air switches, in particular to a wiring terminal for an air switch.
Background
The air switch is an important electric appliance in a low-voltage distribution network and an electric power dragging system, and integrates control and multiple protection functions. In addition to completing the contact and breaking of the circuit, the protection of short circuit, severe overload and undervoltage, etc. occurring in the circuit or electrical equipment is also possible, and the motor can be used for starting the motor infrequently, and thus is widely used in the fields of industry, housing, etc. The common faults of the air switch are air switch virtual connection, over-high temperature rise and interphase short circuit, and how to ensure that the air switch provides safe operation, convenient use and reliable work service for a low-voltage power distribution system becomes an important problem facing at present. In the related art, when the air switch is connected with equipment, the wire which is stripped and exposed out of the wire needs to be inserted into a wiring hole of the air switch, and the wire needs to be crimped by a metal pressing sheet in the air switch. However, the metal pressing sheet is difficult to be in full contact with a plurality of strands of wires of the electric wire, the crimping of the plurality of strands of wires is poor, and the contact area between the wires and the metal pressing sheet is small, so that the temperature of the wires is too high during overload or short-circuit fault, and the potential safety hazard of burning the air switch is generated.
SUMMERY OF THE UTILITY MODEL
The application provides a binding post for air switch to solve the low problem of air switch wiring security.
The application provides a binding post for air switch, this binding post includes: a connection cylinder, a connection plug and an expansion tube, wherein,
one end of the connecting cylinder is provided with a wire socket, the connecting plug comprises a first connecting part and a second connecting part, the central axis of the first connecting part is superposed with the central axis of the connecting cylinder, and one end of the first connecting part is connected with the other end of the connecting cylinder;
the second connecting part is arranged on one side of the other end of the first connecting part, the second connecting part is parallel to the first connecting part, the second connecting part is matched with the wire inlet hole of the air switch, and the upper end face of one end, away from the first connecting part, of the second connecting part is a horizontal end face;
the second connecting portion are close to one end of the first connecting portion, the first connecting portion and the wire connecting cylinder are wrapped by the expansion pipe.
Optionally, the first connecting portion and the second connecting portion are integrally formed.
Optionally, the connection plug further includes a third connection portion, one end of the third connection portion is vertically connected to the first connection portion, and the other end of the third connection portion is vertically connected to the second connection portion.
Optionally, the first connecting portion, the second connecting portion and the third connecting portion are integrally formed.
Optionally, the expansion tube extends below the open end of the wire barrel.
Optionally, the first connection portion diameter of the wiring plug is smaller than the diameter of the wiring barrel.
Optionally, the first connection portion of the terminal plug and the terminal barrel are connected by welding or fusing.
The application provides a binding post for air switch's beneficial effect includes:
the application provides a binding post for air switch, including a wiring section of thick bamboo, wiring plug and expansion pipe, come the wire contact with the electric wire through a wiring section of thick bamboo, come the metal preforming contact with air switch through the wiring plug, make the wire of electric wire can be connected with air switch's metal preforming electricity. The inner wall of the wiring barrel can be in full contact with a cylindrical wire of an electric wire, one end of the wiring plug is a horizontal end face and can be in full contact with the metal pressing sheet, the contact area of the wire and the metal pressing sheet is indirectly guaranteed, and the potential safety hazard that the air switch is burnt by overhigh temperature when overload or short circuit faults are caused due to poor crimping and small contact area of a multi-strand wire and the metal pressing sheet is solved; the arrangement of the wiring plug increases the distance between two phases of wires connected to the air switch, and the possibility of interphase short circuit can be reduced; according to the air switch, the wiring plug is in contact with the metal pressing sheet, the wiring plug is convenient to insert, the wiring plug can be inserted without completely screwing out a screw of the air switch, and wiring convenience of the air switch is improved; the expansion pipe that this application set up has ensured the insulating effect between the double-phase electric wire, has improved air switch wiring security.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a schematic wiring diagram of an air switch according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a connection terminal for an air switch according to an embodiment of the present disclosure;
fig. 3 is an installation schematic diagram of a connection terminal for an air switch according to an embodiment of the present application.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, for a schematic wiring diagram of an air switch provided in an embodiment of the present invention, as shown in fig. 1, a wire pressing hole 23 and a wire pressing screw 24 are provided on an upper surface of an air switch 2, the wire pressing hole 23 and the wire pressing screw 24 are connected by a thread, and a metal pressing piece 22, typically a copper pressing piece, is provided in the wire pressing hole 23. One side surface of the air switch 2 is provided with two wire inlet holes 21 of the same height for inserting the electric wires 3. In order to solve the safety problems that the wire 3 is not in contact with a pressing sheet when being directly inserted into the wire inlet hole 21, and the arc short circuit is easily caused because the wire distance between the two wire inlet holes 21 is too small, the invention provides the connecting terminal 1 for the air switch, wherein the connecting terminal 1 for the air switch can be a left A-type terminal or a right B-type terminal, the A-type terminal and the B-type terminal are in a symmetrical structure, and the structure of the connecting terminal 1 for the air switch is described by taking the B-type terminal as an example.
The structure of the terminal 1 for an air switch is shown in fig. 2, and includes a terminal barrel 11, a terminal plug 12, and an expansion tube 13.
One end of the wire barrel 11 is provided with a wire insertion opening, which may be cylindrical and sized to match the wire 3, and the wire 3 with the wire exposed by peeling can be inserted into the wire insertion opening. The other end of the wire insertion opening is connected to a terminal plug 12. Wire socket can select the aluminum product, is the same with the inside wire material of electric wire 3 for when the wire that scatters in the electric wire 3 contacts with wire socket, can conduct the electric current on the wire socket, again through wire socket conduction to wiring plug 12 on, ensured the area of contact of wire and wiring plug 12, avoided because of the wire scatters, only partial wire contacts with wiring plug 12, and make the electric current overload and the serious problem of generating heat on the wire that contacts.
The wiring plug 12 is made of copper and is made of the same material as the metal pressing sheet 22, so that the current conduction effect is guaranteed. The connection mode of the wire socket and the wiring plug 12 can be selected as welding or fusion welding, so that the probability of corrosion caused by the contact between the wire socket made of aluminum and the wiring plug 12 made of copper can be greatly reduced.
The terminal plug 12 includes a first connection portion 121 and a second connection portion 123, one end of the first connection portion 121 being connected to the other end of the terminal barrel 11; the diameter of the first connection portion 121 may be smaller than the diameter of the wire barrel 11, so as to facilitate welding or fusing of the first connection portion 121 and the wire barrel 11.
The central axis of the first connecting portion 121 coincides with the central axis of the wire connecting cylinder 11, the second connecting portion 123 is disposed on one side of the other end of the first connecting portion 121, and the second connecting portion 123 is parallel to the first connecting portion 121. As shown in fig. 2, the second connection part 123 is matched with the wire inlet hole 21 of the air switch, and the second connection part 123 can be inserted into the wire inlet hole 21 of the air switch. The second connecting portion 123 is located at an end away from the first connecting portion 121, that is, an end of the second connecting portion 123 contacting the metal pressing piece 22 of the air switch, and an upper end surface of the second connecting portion is a horizontal end surface, so that the second connecting portion can make good contact with the metal pressing piece 22 which is also a horizontal end surface.
One end of the second connecting part 123 close to the first connecting part 121, the first connecting part 121 and the exterior of the wire connecting cylinder 11 are wrapped with the expansion pipe 13. The expansion pipe 13 is made of plastic materials and can play an insulating role, the expansion pipe 13 outside the wiring barrel 11 extends to the lower portion of the opening end of the wiring barrel 11, namely the expansion pipe 11 is extended out, when the electric wire is inserted into the wiring barrel 11, the characteristic that the expansion pipe 13 shrinks due to heat can be utilized, one end, close to the electric wire, of the expansion pipe 13 is hot-pressed on the electric wire, the tightness between the wiring barrel 11 and the electric wire is guaranteed, and the electric wire is prevented from being separated from the wiring barrel 11.
A third connecting portion 122 may be further disposed between the first connecting portion 121 and the second connecting portion 123, one end of the third connecting portion 122 is perpendicular to the first connecting portion 121, the other end of the third connecting portion 122 is perpendicular to the second connecting portion 123, and the third connecting portion 122 may increase a distance between a central axis of the first connecting portion 121 and a central axis of the second connecting portion 123. The outside of the third connecting portion 122 is also sleeved with an expansion pipe 13 to ensure the insulation effect.
In practical implementation, the first connecting portion 121, the second connecting portion 123 and the third connecting portion 122 may be formed integrally, and the expansion pipe 13 may also be formed integrally, so that the stability is better than that of the assembled structure.
The installation schematic diagram of the connection terminal 1 for the air switch provided by the embodiment of the application when in use is shown in fig. 3, one end of the a-type terminal and one end of the B-type terminal can be inserted into the wires with the wires exposed, and the other end of the a-type terminal and the other end of the B-type terminal are respectively installed and inserted into the two wiring holes 21 of the air switch; moreover, the conducting wires can be well contacted with the wiring plug 12, and the wiring plug 12 can be well contacted with the metal pressing sheet 22, so that the potential safety hazard that the air switch is burnt out due to too high temperature caused by overload or short circuit fault due to too small contact area and poor crimping caused by only a few conducting wires contacted with the metal blade is avoided; in addition, because the wire does not need to be directly inserted into the wiring hole 21, the screw does not need to be completely screwed out from the air switch to take out the metal pressing sheet 22, and a sufficient insertion space is provided for the fluffy wire.
As can be seen from the above embodiments, the terminal for the air switch provided in the present application is in contact with the wire of the electric wire through the wire barrel, and is in contact with the metal pressing piece of the air switch through the wire plug, so that the wire of the electric wire can be electrically connected to the metal pressing piece of the air switch. The inner wall of the wiring barrel can be in full contact with a cylindrical wire of an electric wire, one end of the wiring plug is a horizontal end face and can be in full contact with the metal pressing sheet, the contact area of the wire and the metal pressing sheet is indirectly guaranteed, and the potential safety hazard that the air switch is burnt by overhigh temperature when overload or short circuit faults are caused due to poor crimping and small contact area of a multi-strand wire and the metal pressing sheet is solved; the arrangement of the wiring plug increases the distance between two phases of wires connected to the air switch, and the possibility of interphase short circuit can be reduced; according to the air switch, the wiring plug is in contact with the metal pressing sheet, the wiring plug is convenient to insert, the wiring plug can be inserted without completely screwing out a screw of the air switch, and wiring convenience of the air switch is improved; the expansion pipe that this application set up has ensured the insulating effect between the double-phase electric wire, has improved air switch wiring security.
Since the above embodiments are all described by referring to and combining with other embodiments, the same portions are provided between different embodiments, and the same and similar portions between the various embodiments in this specification may be referred to each other. And will not be described in detail herein.
It is noted that, in this specification, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a circuit structure, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such circuit structure, article, or apparatus. Without further limitation, the presence of an element identified by the phrase "comprising an … …" does not exclude the presence of other like elements in a circuit structure, article or device comprising the element.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
The above-described embodiments of the present application do not limit the scope of the present application.
Claims (7)
1. A connecting terminal for an air switch is characterized by comprising: a connection cylinder (11), a connection plug (12) and an expansion tube (13), wherein,
one end of the wiring barrel (11) is provided with a wire socket, the wiring plug (12) comprises a first connecting part (121) and a second connecting part (123), the central axis of the first connecting part (121) is overlapped with the central axis of the wiring barrel (11), and one end of the first connecting part (121) is connected with the other end of the wiring barrel (11);
the second connecting part (123) is arranged on one side of the other end of the first connecting part (121), the second connecting part (123) is parallel to the first connecting part (121), the second connecting part (123) is matched with a wire inlet hole of the air switch, and the upper end face of one end, away from the first connecting part (121), of the second connecting part (123) is a horizontal end face;
one end of the second connecting part (123) close to the first connecting part (121), the first connecting part (121) and the outside of the wire connecting barrel (11) are wrapped with the expansion pipe (13).
2. A terminal block for an air switch according to claim 1, wherein the first connection portion (121) and the second connection portion (123) are integrally formed.
3. A terminal block for an air switch according to claim 1, wherein the terminal plug (12) further includes a third connecting portion (122), one end of the third connecting portion (122) is perpendicularly connected to the first connecting portion (121), and the other end of the third connecting portion (122) is perpendicularly connected to the second connecting portion (123).
4. A terminal block for an air switch according to claim 3, wherein the first connection portion (121), the second connection portion (123) and the third connection portion (122) are integrally formed.
5. A terminal block for an air switch according to claim 1, wherein the expansion tube (13) extends below an open end of the terminal barrel (11).
6. A terminal block for an air switch according to claim 1, wherein a diameter of the first connection portion (121) of the terminal plug (12) is smaller than a diameter of the terminal barrel (11).
7. A terminal block for an air switch according to claim 6, wherein the first connection portion (121) of the terminal plug (12) and the terminal barrel (11) are connected by welding or fusing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020203425.3U CN211238125U (en) | 2020-02-24 | 2020-02-24 | Binding post for air switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020203425.3U CN211238125U (en) | 2020-02-24 | 2020-02-24 | Binding post for air switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211238125U true CN211238125U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020203425.3U Active CN211238125U (en) | 2020-02-24 | 2020-02-24 | Binding post for air switch |
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| Country | Link |
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| CN (1) | CN211238125U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243332A (en) * | 2021-11-13 | 2022-03-25 | 深圳供电局有限公司 | Connecting terminal |
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2020
- 2020-02-24 CN CN202020203425.3U patent/CN211238125U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243332A (en) * | 2021-11-13 | 2022-03-25 | 深圳供电局有限公司 | Connecting terminal |
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