CN218385813U - Connecting terminal suitable for electrical connection - Google Patents

Abstract

The utility model relates to an electrical connection field discloses a binding post suitable for electrical connection, it includes connecting pipe and clamp bolt, be provided with on the connecting pipe and supply wire male wiring chamber, be provided with on the pipe wall of connecting pipe with the communicating pipe wall screw hole in wiring chamber, clamp bolt passes through pipe wall screw hole assembly on the connecting pipe and stretches into to the wiring intracavity, compress tightly to fix in the wiring intracavity with the wire that will insert to the wiring intracavity, be provided with the supporting part on the outer wall of connecting pipe, be provided with the restriction part on the supporting part, the restriction part is configured into: the restricting member restricts at least radial movement of the hold-down bolt in itself at least after the hold-down bolt is fitted into the pipe wall threaded hole. This application reasonable in design and structure are firm, and clamp bolt is difficult not hard up, can be so that the connection between wire and the connecting pipe is more firm.

Description

Connecting terminal suitable for electrical connection

Technical Field

The application relates to the field of electrical connection, in particular to a wiring terminal suitable for electrical connection.

Background

With the development of the technology, the electrical industry has also been rapidly developed, and in order to facilitate wiring and installation when connecting electrical lines, connection terminals are generally used to connect wires and electrical components. A terminal is an accessory product for realizing electrical connection.

In the prior art, the main structure of the connection terminal includes: the connecting pipe and the spliced pole that are connected, the connecting pipe generally adopts aluminium material to make, the spliced pole generally adopts copper material to make, link as an organic wholely through friction weld between connecting pipe and the spliced pole, the connecting pipe can supply aluminium system wire to insert, can carry out fixed connection by the crimping mode or the mode of exempting from the crimping between connecting pipe and the aluminium system wire, wherein the mode of exempting from the crimping can be adopt clamp bolt to run through the assembly on the pipe wall of connecting pipe and compress tightly aluminium system wire in the connecting pipe. Although the above scheme can realize the press connection between the connecting pipe and the aluminum conductor without the pressure bolt and has the characteristics of simple structure and convenient operation, some technical problems still exist in the scheme: due to the requirement of light weight of the wiring terminal, the pipe wall of the connecting pipe is often relatively thin, and a threaded hole is required to be formed in the pipe wall of the connecting pipe and is used for being matched with the compression bolt, so that the depth of the threaded hole is short, the contact area of the threaded hole and the compression bolt is small, and the restriction force of the threaded hole on the compression bolt is not strong; when the compression bolt is assembled with the threaded hole, particularly in the process of screwing the compression bolt, the compression bolt can be subjected to large resistance after encountering an aluminum conductor, the surface of the aluminum conductor is smooth, after the compression bolt is contacted with the surface of the aluminum conductor, and under the common influence of the resistance and an external force for driving the compression bolt to screw, the compression bolt is easy to deviate in the screwing process, so that the compression bolt is obliquely assembled in the threaded hole, the compression bolt is easy to loosen due to the assembly, and further the connection between the aluminum conductor and the connecting pipe is not firm.

Therefore, it is highly desirable to develop a new type of connecting terminal to solve the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a binding post suitable for electrical connection that reasonable in design and structure are firm is provided to the weak point that remedies prior art.

In order to solve the technical problem, the following technical scheme is adopted in the application:

a connecting terminal suitable for electrical connection comprises a connecting pipe and a compression bolt, wherein a wiring cavity into which a wire can be inserted is formed in the connecting pipe, a pipe wall threaded hole communicated with the wiring cavity is formed in the pipe wall of the connecting pipe, and the compression bolt is assembled on the connecting pipe through the pipe wall threaded hole and extends into the wiring cavity so as to tightly press and fix the wire inserted into the wiring cavity in the wiring cavity;

a support portion is disposed on an outer wall of the connecting pipe, a limiting member is disposed on the support portion, and the limiting member is configured to: the restricting member restricts at least radial movement of the hold-down bolt in itself at least after the hold-down bolt is fitted to the pipe wall threaded hole.

Furthermore, the supporting part comprises a connecting plate and a supporting plate, the supporting plate is fixed on the outer wall of the connecting pipe through the connecting plate, and the supporting plate and the pipe wall threaded hole are arranged oppositely.

Furthermore, the limiting piece is a limiting hole which is arranged on the supporting plate and can be penetrated by the pressing bolt, and the limiting hole and the pipe wall threaded hole are coaxially arranged;

the limiting hole is a threaded hole matched with the pressing bolt; or

The limiting hole is a through hole, and the diameter of the through hole is matched with the maximum outer diameter of the screw rod of the compression bolt.

Further, the supporting portion is a boss which is arranged on the outer wall of the connecting pipe and extends towards the outer side of the connecting pipe.

Furthermore, the limiting piece is a limiting hole which is arranged on the boss and can be penetrated by the pressing bolt, and the limiting hole is communicated with the pipe wall threaded hole and is coaxially arranged with the pipe wall threaded hole;

the limiting hole is a threaded hole matched with the pressing bolt; or alternatively

The limiting hole is a through hole, and the diameter of the through hole is matched with the maximum outer diameter of the screw rod of the compression bolt.

Furthermore, the limiting piece is a limiting groove which is arranged on the supporting part and is formed by sinking towards the inner side of the connecting pipe, the diameter of the limiting groove is matched with the maximum outer diameter of a nut of the compression bolt, and the nut of the compression bolt is arranged in the limiting groove at least after the compression bolt is assembled with the pipe wall threaded hole.

Furthermore, a connecting column used for being connected with an electric element is fixedly connected to the connecting pipe, and the connecting pipe and the connecting column are made of different conductor materials.

Furthermore, at least one plane is arranged on the outer wall of the connecting column, and anti-skid grains are formed on at least part of the outer surface of the connecting column.

Furthermore, one end of the pressing bolt, which is placed into the wiring cavity, is provided with a spherical surface which protrudes outwards.

Furthermore, at least part of the inner wall of the wiring cavity is provided with anti-skid grains.

Compared with the prior art, the beneficial effect of this application is:

the utility model provides a restricted part and pipe wall screw hole cooperate and use the radial movement who comes the common restriction clamp bolt, pipe wall screw hole and clamp bolt assembly can regard as clamp bolt to take place the first department restriction of radial movement, the restricted part is used in the second department restriction that can take place radial movement as clamp bolt on clamp bolt, under the condition of two departments restriction, alright in order to guarantee that clamp bolt can precess to the wiring intracavity according to the route of predetermineeing, and can not make clamp bolt take place the skew or rock at the precession in-process, clamp bolt can compress tightly the wire in the wiring intracavity more steadily, adopt the back of such mode connection, clamp bolt is difficult not hard up, can make the connection between wire and the connecting pipe more firm.

Drawings

In order that the advantages of the application will be readily understood, a more particular description of the application briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the application and are not therefore to be considered to be limiting of its scope, the application will be described and explained with additional specificity and detail through the use of the accompanying drawings.

FIG. 1 is a schematic overall structure diagram of an embodiment of the present application;

FIG. 2 is a schematic diagram of an internal structure of an embodiment of the present application;

FIG. 3 is a schematic view of an embodiment of the present application with the hold-down bolts removed;

FIG. 4 is a schematic overall structure diagram of another embodiment of the present application;

FIG. 5 is a schematic diagram of the internal structure of another embodiment of the present application;

FIG. 6 is a schematic view of the internal structure of a connecting tube according to another embodiment of the present application;

FIG. 7 is a schematic view of another embodiment of the present application with hold-down bolts removed;

FIG. 8 is a schematic diagram of the overall structure of yet another embodiment of the present application;

fig. 9 is a schematic diagram of an internal structure of another embodiment of the present application.

The reference numbers are as follows:

100-connecting pipe, 101-wiring cavity, 102-threaded hole of pipe wall;

200-hold-down bolts;

300-connecting column;

400-support part, 401-connection plate, 402-support plate;

501-limiting hole, 502-limiting groove.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present application. It will be apparent, however, to one skilled in the art, that the embodiments of the present application may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring embodiments of the present application.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present application. It is apparent that the implementation of the embodiments of the present application is not limited to the specific details familiar to those skilled in the art. The following detailed description of the preferred embodiments of the present application, however, may have other embodiments in addition to those detailed.

In the description of the present application, the term "a and/or B" denotes all possible combinations of a and B, such as a alone, B alone or a and B, the term "at least one a or B" or "at least one of a and B" meaning similar to "a and/or B" and may include a alone, B alone or a and B; the singular forms "a", "an" and "the" may include the plural forms as well; the terms "inboard", "outboard", "longitudinal", "lateral", "upper", "lower", "top", "bottom", and the like, indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience in describing the application and do not require that the application must be constructed and operated in a particular orientation and therefore should not be construed as limiting the application; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Embodiments of the present application are described in further detail below with reference to the attached drawing figures:

example one

Referring to fig. 1 to 3, the present embodiment provides a connection terminal suitable for electrical connection, including a connection pipe 100, a hold-down bolt 200 and a connection column 300, wherein one end of the connection pipe 100 is provided with a connection cavity 101, a wire can be inserted into the connection cavity 101, a pipe wall threaded hole 102 communicated with the connection cavity 101 is provided on a pipe wall of the connection pipe 100, and the hold-down bolt 200 is assembled on the connection pipe 100 through the pipe wall threaded hole 102 and extends into the connection cavity 101, so as to hold down and fix the wire inserted into the connection cavity 101 in the connection cavity 101; the other end of the connecting tube 100 is fixedly connected with a connecting post 300, the connecting post 300 can be inserted into a wiring slot of an electrical component (such as an air switch) to realize that the connecting post 300 is tightly connected with the electrical component, wherein the connecting tube 100 and the connecting post 300 are made of different conductor materials, generally, the connecting tube 100 is made of an aluminum material, the connecting post 300 is made of a copper material, the connecting tube 100 and the connecting post 300 are connected in a friction welding manner, and of course, the material selection and the connection manner of the connecting tube 100 and the connecting post 300 are not limited to the above manner, and can be replaced correspondingly according to related requirements and standards.

A support part 400 is provided on an outer wall of the connection pipe 100, a restriction part is provided on the support part 400, and the restriction part is configured to: the restricting member restricts at least the radial movement of the hold-down bolt 200 in itself at least after the hold-down bolt 200 is fitted into the tubular wall threaded hole 102. The limiting part is matched with the pipe wall threaded hole 102 to limit radial movement of the pressing bolt 200, the pipe wall threaded hole 102 and the pressing bolt 200 can be used as a first position limit for the pressing bolt 200 to move radially, the limiting part acts on the pressing bolt 200 and can be used as a second position limit for the pressing bolt 200 to move radially, under the condition of two position limits, the pressing bolt 200 can be screwed into the wiring cavity 101 according to a preset path, the pressing bolt 200 cannot deviate or shake in the screwing process, the pressing bolt 200 can more stably press a wire in the wiring cavity 101, after the pressing bolt 200 is connected in the mode, the pressing bolt 200 is not easy to loosen, and connection between the wire and the connecting pipe 100 can be more firm.

In this embodiment, the supporting portion 400 is a boss that is disposed on the outer wall of the connection pipe 100 and extends toward the outer side of the connection pipe 100, the position of the boss corresponds to the position of the pipe wall threaded hole 102, the structural shape of the boss is not limited, the design of the boss is mainly to increase the thickness of the pipe wall at the pipe wall threaded hole 102 designed on the connection pipe 100, and the boss that can satisfy the above design requirements can be applied to this embodiment.

In a preferred embodiment of the present invention, the limiting member is a limiting hole 501 disposed on the boss and through which the pressing bolt 200 can pass, and the limiting hole 501 is communicated with the pipe wall threaded hole 102 and disposed coaxially therewith.

The limiting hole 501 may be a threaded hole adapted to the pressing bolt 200, so that the limiting hole 501 and the threaded hole 102 of the pipe wall form a complete threaded hole penetrating up and down, and the complete threaded hole may be integrally machined.

The limiting hole 501 may also be a through hole, and the diameter of the through hole matches with the maximum outer diameter of the screw of the pressure bolt 200, and in the screwing process of the pressure bolt 200, the through hole can play a role in guiding, so that the pressure bolt 200 can move axially stably, and the pressure bolt 200 is prevented from shaking and shifting.

In another preferred embodiment of the present invention, the limiting member is a limiting groove 502 formed on the boss and recessed toward the inner side of the connection pipe 100, the diameter of the limiting groove 502 matches the maximum outer diameter of the nut of the pressing bolt 200, and the nut of the pressing bolt 200 is placed in the limiting groove 502 at least after the pressing bolt 200 is assembled with the pipe wall threaded hole 102. The limiting groove 502 is used in cooperation with the pipe wall threaded hole 102 to limit radial movement of the hold-down bolt 200 together, so that the hold-down bolt 200 can be screwed into the wiring cavity 101 according to a preset path without deviation.

Of course, in the present embodiment, the limiting member is not limited to the two solutions, and the two solutions of the limiting member may be combined together, that is, the limiting hole 501 is used to radially limit the screw of the pressing bolt 200, and the limiting groove 502 is also used to radially limit the nut of the pressing bolt 200.

As a further preferable scheme, at least one plane is arranged on the outer wall of the connecting column 300, and anti-slip patterns are formed on at least part of the outer surface of the connecting column 300, and the design of the anti-slip patterns can increase the friction force between the connecting column 300 and the wiring grooves of the electric elements, so as to ensure the reliability of structural connection.

As a further preferable scheme, one end of the pressing bolt 200 inserted into the wiring cavity 101 is formed with a spherical surface protruding outwards, and the spherical surface is designed to prevent the edge of the end of the pressing bolt 200 from forming a sharp edge, so as to prevent the wire inserted into the wiring cavity 101 from being scratched or cut off to cause the compressed wire to be separated from the connecting pipe 100. In addition, in order to ensure the connection reliability between the wire and the connection pipe 100, two or more pressing bolts 200 are designed on the pipe wall of the connection pipe 100, and the two or more pressing bolts 200 may be arranged in a straight line or may be arranged at a certain angle in a staggered manner.

As a further preferable scheme, at least part of the inner wall of the wiring cavity 101 is provided with anti-slip grains, and the design of the anti-slip grains can increase the friction force between the lead and the wiring cavity 101 so as to ensure the reliability of structural connection; in addition, the anti-skidding line can be designed into the internal tooth that sets up with wiring chamber 101 is coaxial, not only has the effect of increase joint strength, can also utilize the internal tooth to destroy the oxide layer of wire (aluminium wire) surface at the in-process that compresses tightly for electric conductive property is better between wire and the electric elements.

Example two

Referring to fig. 4 to 7, the present embodiment provides another connection terminal suitable for electrical connection, and the difference between the present embodiment and the first embodiment is mainly that: the structure of the support part 400 is different.

In this embodiment, the supporting portion 400 includes a connecting plate 401 and a supporting plate 402, the supporting plate 402 is fixed on the outer wall of the connecting pipe 100 through the connecting plate 401, and the supporting plate 402 is disposed opposite to the pipe wall threaded hole 102; in order to ensure the relative stability between the support plate 402 and the connection pipe 100, two connection plates 401 may be respectively designed on two sides of the support plate 402, and the two connection plates 401 may be disposed at a certain angle, so that the whole support portion 400 may be fastened and clamped on the outer wall of the connection pipe 100 through the two connection plates 401 or may be welded and fixed on the outer wall of the connection pipe 100 through the two connection plates 401.

In a preferred embodiment of the present invention, the limiting member is a limiting hole 501 disposed on the support plate 402 and through which the pressing bolt 200 can pass, and the limiting hole 501 is disposed coaxially with the tube wall threaded hole 102.

The limiting hole 501 can be a threaded hole matched with the pressing bolt 200, and the limiting hole 501 and the pipe wall threaded hole 102 are vertically and correspondingly arranged, so that the pressing bolt 200 is limited by two threaded holes, the pressing bolt 200 can be ensured to stably move axially, and the pressing bolt 200 is prevented from shaking and shifting.

The limiting hole 501 may also be a through hole, and the diameter of the through hole matches with the maximum outer diameter of the screw of the pressure bolt 200, and in the screwing process of the pressure bolt 200, the through hole can play a role in guiding, so that the pressure bolt 200 can move axially stably, and the pressure bolt 200 is prevented from shaking and shifting.

In another preferred embodiment of the present invention, the limiting member is a limiting groove 502 formed on the support plate 402 and recessed toward the inner side of the connection pipe 100, the diameter of the limiting groove 502 matches the maximum outer diameter of the nut of the pressing bolt 200, and the nut of the pressing bolt 200 is placed in the limiting groove 502 at least after the pressing bolt 200 is assembled with the pipe wall threaded hole 102. The limiting groove 502 is used in cooperation with the pipe wall threaded hole 102 to limit radial movement of the hold-down bolt 200 together, so that the hold-down bolt 200 can be screwed into the wiring cavity 101 according to a preset path without deviation.

Of course, in the present embodiment, the limiting member is not limited to the two solutions, and the two solutions of the limiting member may be combined together, that is, the limiting hole 501 is used to radially limit the screw of the pressing bolt 200, and the limiting groove 502 is also used to radially limit the nut of the pressing bolt 200.

EXAMPLE III

Referring to fig. 8 and 9, the present embodiment provides another connection terminal suitable for electrical connection, and the difference between the present embodiment and the first embodiment is mainly that: the limiting groove 502 is not designed, and the hold-down bolt 200 adopts jackscrews, and only the screw part has no nut part; preferably, the upper end of the jackscrew is also provided with a straight groove or a cross groove used for being matched with a screwdriver. The supporting part 400 is a boss which is arranged on the outer wall of the connecting pipe 100 and extends towards the outer side of the connecting pipe 100, the limiting part is a limiting hole 501 which is arranged on the boss and can be penetrated by the pressing bolt 200, the limiting hole 501 is communicated with the pipe wall threaded hole 102, and the limiting hole 501 and the pipe wall threaded hole are coaxially arranged; the limiting hole 501 is designed as a threaded hole adapted to the hold-down bolt 200, so that the limiting hole 501 and the threaded hole 102 of the pipe wall form a complete threaded hole which is through from top to bottom, and the complete threaded hole can be integrally machined.

While there have been shown and described what are at present considered the fundamental principles and essential features of the application and its advantages, it will be apparent to those skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics of the application. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A wiring terminal suitable for electrical connection comprises a connecting pipe and a compression bolt, wherein a wiring cavity for a wire to be inserted is arranged on the connecting pipe, a pipe wall threaded hole communicated with the wiring cavity is arranged on the pipe wall of the connecting pipe, the compression bolt is assembled on the connecting pipe through the pipe wall threaded hole and extends into the wiring cavity so as to compress and fix the wire inserted into the wiring cavity in the wiring cavity,

a support portion is disposed on an outer wall of the connecting tube, a limiting member is disposed on the support portion, and the limiting member is configured to: the restricting member restricts at least radial movement of the hold-down bolt in itself at least after the hold-down bolt is fitted to the pipe wall threaded hole.

2. The electrical connection terminal as claimed in claim 1, wherein the support portion includes a connection plate and a support plate, the support plate is fixed to the outer wall of the connection pipe through the connection plate, and the support plate is disposed opposite to the threaded hole of the pipe wall.

3. A terminal suitable for electrical connection according to claim 2,

the limiting piece is a limiting hole which is arranged on the supporting plate and can be penetrated by the pressing bolt, and the limiting hole and the pipe wall threaded hole are coaxially arranged;

the limiting hole is a threaded hole matched with the compression bolt; or

The limiting hole is a through hole, and the diameter of the through hole is matched with the maximum outer diameter of the screw rod of the compression bolt.

4. The connection terminal adapted for electrical connection according to claim 1, wherein the support portion is a boss provided on an outer wall of the connection pipe and extending toward an outside of the connection pipe.

5. A terminal suitable for electrical connection according to claim 4,

the limiting piece is a limiting hole which is arranged on the boss and can be penetrated by the compression bolt, the limiting hole is communicated with the pipe wall threaded hole, and the limiting hole and the pipe wall threaded hole are coaxially arranged;

the limiting hole is a threaded hole matched with the compression bolt; or alternatively

The limiting hole is a through hole, and the diameter of the through hole is matched with the maximum outer diameter of the screw rod of the compression bolt.

6. The connection terminal adapted for electrical connection according to claim 2 or 4, wherein the restricting member is a restricting groove formed in the support portion and recessed toward the inside of the connection pipe, the diameter of the restricting groove matches the maximum outer diameter of the nut of the pressure bolt, and the nut of the pressure bolt is fitted into the restricting groove at least after the pressure bolt is assembled with the pipe wall threaded hole.

7. The electrical connection terminal as claimed in claim 1, wherein a connection post for connection with an electrical component is fixedly connected to the connection tube, and the connection tube and the connection post are made of different conductive materials.

8. The terminal adapted for electrical connection of claim 7, wherein the outer wall of the terminal post has at least one flat surface formed thereon, and at least a portion of the outer surface of the terminal post has non-slip threads formed thereon.

9. The terminal block for electrical connection according to claim 1, wherein the end of the pressure bolt inserted into the terminal cavity is formed with a spherical surface protruding outward.

10. A terminal suitable for use in an electrical connection according to claim 1, wherein at least part of the inner wall of the wiring cavity is provided with anti-slip threads.

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