CN213093398U

CN213093398U - Copper bar fixing device and electrical connection structure

Info

Publication number: CN213093398U
Application number: CN202022006258.6U
Authority: CN
Inventors: 秦井武; 谭英徐; 李亮; 贺超; 刘其猛
Original assignee: Jiangsu Jingwei Rail Traffic Equipment Co ltd
Current assignee: Jiangsu Jingwei Rail Traffic Equipment Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-04-30
Anticipated expiration: 2030-09-14

Abstract

The utility model provides a copper bar fixing device and electrical connection structure, include support piece, the adaptor and the first retaining member that constitute by metal material respectively that constitute by insulating material, the adaptor includes first locking portion, treats to have the through-hole on the fixed copper bar, first retaining member passes in proper order through-hole, first locking portion, and with support piece connects, treat fixed copper bar the adaptor with support piece quilt first retaining member is fixed. The embodiment of the utility model provides a through increase the adaptor that comprises metal material on the support piece that comprises insulating material to it is fixed with support piece and copper bar locking with first retaining member by the adaptor, greatly increased the reliability of copper bar and support piece mechanical connection, simultaneously because first locking portion has on the adaptor, avoided being equipped with the nut alone.

Description

Copper bar fixing device and electrical connection structure

Technical Field

The embodiment of the utility model provides a relate to the electrical connection field, more specifically say, relate to a copper bar fixing device and electrical connection structure.

Background

In the field of electrical connection, copper bars are often used as main materials and components of electrical connection due to the advantages of good electrical conductivity, high current-carrying density, strong manufacturability, high space utilization rate and the like. The insulating part is good because of electrical insulation and mechanical strength, usually as the first choice material of the connection structure of copper bar installation fastening. The copper bar and the insulating piece are installed and fastened through the bolts, the reliability of mechanical installation of the copper bar can be guaranteed, and the electrical insulating performance of the copper bar can be guaranteed.

As shown in fig. 1, the structure schematic diagram of the electrical connection between two terminals 14 is implemented by using an insulator 11 (an insulating support structure with embedded threads formed by injection molding) and a copper bar 12, wherein the two terminals 14 are respectively fastened and fixed to two ends of the copper bar 12 by a bolt and nut combination 15, and the copper bar 12 is fastened and fixed on the insulator 11 by a bolt 13. In the mounting structure, because the insulators 11 are produced in batches by adopting an injection molding process, the requirements of small batches cannot be met, and the cost can be greatly increased in the scheme of using a small number of insulators. In addition, the copper bar 12 is connected with the insulator 11 without a limit structure, and the copper bar 12 can rotate along with the bolt 13 in the fastening process.

As shown in fig. 2, the structure of the electrical connection between the two terminals 24 is schematically illustrated by using the insulating plate 21 and the copper bar 22, and the two terminals 24 are respectively fastened and fixed to two ends of the copper bar 22 by a bolt and nut combination 25. Threaded holes are tapped on the insulating plate 21, and the copper bar 22 is fastened by bolts 23 to be mechanically connected with the insulating plate 21. In this mounting structure, the screw hole of insulating board 21 usually can not bear great pretightning force, and when the dismouting number of times is great, the screw tooth of screw hole receives destruction easily.

As shown in fig. 3, it is another schematic structural diagram that the insulating plate 31 and the copper bar 32 are used to realize electrical connection between two terminals 34, and the two terminals 34 are respectively fastened and fixed to two ends of the copper bar 32 by a bolt and nut combination 35. Through holes are drilled in the insulating plate 31, and the copper bars 32 are mechanically connected with the insulating plate 31 in a fastening mode of bolts 331 and nuts 332. In this mounting structure, a nut 332 needs to be provided on the other side to which the bolt 331 is connected, and when the bolt 331 is fastened, the nut 332 needs to be fastened by a wrench, which is troublesome in operation.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an among to above-mentioned electrical connection structure, the insulator is at the high and fastening in-process copper bar of small batch production cost can follow the commentaries on classics to and the screw tooth of screw hole is fragile among the insulation board, and through-hole structure needs cooperation nut, complex operation's problem, provides a copper bar fixing device and electrical connection structure.

The embodiment of the utility model provides a solve above-mentioned technical problem's technical scheme is, provide a copper bar fixing device, include the support piece that constitutes by insulating material, adaptor and the first retaining member that constitutes by metal material respectively, the adaptor includes first locking portion, treats to have the through-hole on the fixed copper bar, first retaining member passes in proper order through-hole, first locking portion, and with support piece connects, treat fixed copper bar the adaptor with support piece quilt first retaining member is fixed.

Preferably, the supporting piece is provided with a limiting part, and the first locking piece is locked and fixed on the first locking part, and the copper bar to be fixed is limited by the limiting part to rotate.

Preferably, the limiting part comprises a sinking groove, the first locking part of the adapter piece is positioned in the sinking groove, and the adapter piece is accommodated in the sinking groove; the bottom surface of the copper bar to be fixed is accommodated in the sinking groove.

Preferably, the first locking portion is formed by a first screw hole on the adapter; the first locking member comprises a first bolt, and the size of the first bolt is matched with that of the first screw hole;

the bottom of the sink groove is provided with a counter bore, the central axis of the counter bore is superposed with the central axis of the first screw hole, and the first screw hole sinks into the counter bore when the adapter is fixed on the support.

Preferably, the adaptor comprises a first connecting plate and a second connecting plate corresponding to the adjacent surfaces of the support member, the first connecting plate is accommodated in the sinking groove, the first locking portion is located on the first connecting plate, and the second connecting plate is fixed to the support member.

Preferably, the copper bar fixing device comprises a second locking piece; the second connecting plate is provided with a second locking part, the support is provided with a fixing hole, and the second locking piece penetrates through the fixing hole and is connected with the second locking piece.

Preferably, the second locking portion is formed by a second screw hole on a second connecting plate of the adaptor; the second retaining member includes a second bolt, and the size of the second bolt matches the size of the second screw hole.

Preferably, the sinking groove is provided in a width direction of the supporting member.

The embodiment of the utility model provides a still provide an electrical connection structure, include as above copper bar fixing device.

Preferably, the end of the copper bar to be fixed is provided with a terminal connecting hole, and the terminal connecting hole is connected with the terminal through a third locking piece.

The copper bar fixing device and the electrical connection structure of the embodiment have the following beneficial effects: through increase the adaptor that comprises metal material on the support piece that constitutes by insulating material to it is fixed with support piece and copper bar locking by adaptor and first locking piece, greatly increased the reliability of copper bar and support piece mechanical connection, simultaneously because have first locking portion on the adaptor, avoided being equipped with the nut alone. And, the embodiment of the utility model provides a still through increase heavy groove on support piece, can avoid the copper bar to rotate with the company in fastening process, improved assembly efficiency, reduced assembly error.

Drawings

FIG. 1 is a schematic view of a prior art copper bar connection through an insulator;

FIG. 2 is a schematic view of a conventional copper bar connection through an insulation board;

FIG. 3 is a schematic view of another prior art copper bar connection through an insulation board;

fig. 4 is a schematic view of an exploded structure of the copper bar fixing device for copper bar connection according to the embodiment of the present invention;

fig. 5 is a schematic structural view of the copper bar fixing device provided by the embodiment of the present invention after being connected with the copper bar;

fig. 6 is a schematic cross-sectional view taken along line a-a of fig. 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 4-6, it is the schematic structural diagram that the copper bar fixing device provided by the embodiment of the present invention carries out the fixation of the copper bar, and this copper bar fixing device can be applied to any equipment that needs to carry out electrical connection through the copper bar, such as frequency converter, etc. The copper bar fixing device of the embodiment includes a supporting member 41, an adaptor member 43, and a first locking member, wherein the supporting member 41 is made of an insulating material, and the adaptor member 43 and the first locking member are made of a metal material (for example, the adaptor member 43 may be made of a sheet metal material or the like). For increased stability, the volume of the support 41 may be made larger than the volume of the adaptor 43.

In the present embodiment, the adaptor 43 is fixed to the support 41. Adaptor 43 includes first locking portion, and treats that fixed copper bar 42 (should treat to have through-hole 421 on the fixed copper bar 42) fixes on support piece 41 through first locking piece, and this first locking piece passes through-hole 421 and the first locking portion on the copper bar 42 of treating to fix in proper order promptly, realizes the mechanical connection between copper bar 42 and the support piece 41. That is, the adapter 43 realizes the connection and transfer between the supporting member 41 and the copper bar 42, and the force transmission between the copper bar 42 and the supporting member 41 is optimized as follows: copper bar 42 → adaptor 43 → support 41.

Above-mentioned copper bar fixing device is through increasing the adaptor 43 that comprises metal material on the support piece 41 that comprises insulating material to by adaptor 43 and first retaining member with support piece 41 and copper bar 42 locking fixed, greatly increased

copper bar

42 and 41 mechanical connection's of support piece reliability, simultaneously because first locking portion has on the adaptor 43, avoided being equipped with the nut alone.

In an embodiment of the present invention, the supporting member 41 is provided with a limiting portion, and when the first locking member is locked and fixed to the first locking portion, the copper bar 42 to be fixed is limited by the limiting portion to rotate. Thereby improving the assembly efficiency and reducing the assembly error.

Specifically, the limiting portion may be formed by a sunken groove on the supporting member 41 (the width of the sunken groove is greater than the width of the copper bar 42 to be fixed), and when the copper bar 42 is installed in the sunken groove, a gap is formed between the side surface of the copper bar 42 and the side wall of the sunken groove, so as to facilitate installation of the copper bar 42. The first locking portion of the adaptor 43 is located in the sinking groove, the adaptor 43 is accommodated in the sinking groove, the bottom surface of the copper bar 42 to be fixed is located in the sinking groove, and the depth of the sinking groove is greater than the thickness of the adaptor 43 located in the sinking groove. Like this, when fixed copper bar 42, the embedding or the part embedding of copper bar 42 sink the inslot, and when locking first retaining member, copper bar 42 is spacing because of the machinery that sinks the groove lateral wall, avoids following the commentaries on classics. In order to reduce the follow-up space of the copper bar 42, the difference between the width of the sinking groove and the width of the copper bar 42 can be smaller.

In another embodiment of the present invention, the first locking portion is formed by a first screw hole 433 on the adaptor 43, that is, the first screw hole 433 is provided on the plane where the adaptor 43 contacts with the copper bar 42 (specifically, the first screw hole can be formed by tapping or adding a rivet nut on the locking portion 43); accordingly, the first locking member includes a first bolt 44, and the size of the first bolt 44 matches the size of the first screw hole 433. A counterbore 412 is provided at the bottom of the sink groove of the support member 41, the center axis of the counterbore 412 coincides with the center axis of the first screw hole 433, and the first screw hole 433 is sunk into the counterbore 412 when the adaptor member 43 is fixed to the support member 41. When the first bolt 44 is fastened to the first screw hole 433, the end of the first bolt 44 may be inserted into the counter bore 412, thereby increasing the length of the first bolt 44.

In practical applications, the first locking member may further include an elastic pad, a flat pad, or the like, so as to improve the stability of the fixing. In addition, the first locking portion and the first locking member may also adopt other mechanical structures adopting screwing fit, and the stable fixing of the copper bar 42 and the supporting member 41 can also be realized.

In an embodiment of the present invention, the adaptor 43 includes a first connecting plate 431 and a second connecting plate 432 corresponding to adjacent surfaces of the support 41, and the first connecting plate 431 and the second connecting plate 432 are perpendicular to each other, i.e. the entire cross section of the adaptor 43 is L-shaped. In a specific implementation, the first connecting plate 431 and the second connecting plate 432 may be formed by bending the same sheet metal part. When fixed to the support 41, the first connection plate 431 is received in the sinking groove of the support 41, the first locking portion is located on the first connection plate 431, and the second connection plate 432 is fixed with the support 41.

In an embodiment of the present invention, the copper bar fixing device further includes a second locking member; the second connecting plate 432 of the adaptor 43 has a second locking portion thereon, and the support 41 has a fixing hole 411 whose central axis is parallel to the surface of the sinking groove, the adaptor 43 is fixed on the support 41 by a second locking member, and the second locking member passes through the fixing hole 411 and is locked and fixed on the second locking portion of the second connecting plate 432. Of course, in a specific application, the adaptor 43 may be fixed to the support 41 by other means, such as gluing, clipping, etc.

Specifically, the second locking portion is constituted by a second screw hole 434 on the second connecting plate 432 of the adaptor 43 (specifically, the above second screw hole may be formed by tapping or adding a clinch nut to the second connecting plate 432); accordingly, the second locking member includes a second bolt 45, and the size of the second bolt 45 matches the size of the second screw hole 434. That is, the second bolt 45 passes through the fixing hole 411 of the supporting member 41 and then is screwed with the second screw hole 434 of the second connecting plate 432, so as to fix the adaptor 43. Due to the screwing structure of the second bolt 45 and the second screw hole 434, the adaptor 43 and the support 41 can be stably fixed.

To ensure the stability of the fixation between the adaptor 43 and the support 41, the second locking portion may include two second bolts 45, and correspondingly, two second clinch nuts 434 are provided on the second connecting plate 432 of the second adaptor 43.

In another embodiment of the present invention, the sinking groove on the supporting member 41 may be disposed along the width direction of the supporting member 41, i.e. the central line of the sinking groove is perpendicular to the length direction of the supporting member 41, for example, the supporting member 41 has a rectangular shape as a whole, the sinking groove is located on the upper surface of the rectangular shape, and the sinking groove is a through groove formed along the width direction of the rectangular shape. Through the mode, the width of the supporting piece 41 can be reduced, so that the whole copper bar fixing device is compact in structure and small in space requirement.

The utility model also provides an electrical connection structure, this electrical connection structure can be applied to in the equipment that needs carry out electrical connection through the copper bar. As shown in fig. 4 to 6, the electrical connection structure of the present embodiment includes the copper bar 42, the first locking member, and the copper bar fixing device as described above, and the electrical connection of the two terminals 46 is realized through the copper bar 42. That is, a through hole 421 is formed on the copper bar 42, the copper bar 42 is fixed on the supporting member 41 through a first locking member, and the first locking member passes through the through hole 421 on the copper bar 42 and is locked and fixed on the first locking portion of the adaptor 43. The supporting piece 41 can be fixed on a metal plate or other structural parts of equipment, so that the copper bar 42 is fixed, and meanwhile, the insulation of the copper bar 42 is guaranteed.

In an embodiment of the present invention, the copper bar 42 further includes two terminal connection holes 422, and the through hole 421 is located between the two terminal connection holes 422. The terminals 46 can be fixed at the terminal connection holes 422 of the copper bar 42 by a third locking member (e.g., bolts) and a nut set 47, thereby achieving electrical connection of the two terminals 46.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a copper bar fixing device, its characterized in that includes support piece, adaptor and the first retaining member that comprises metal material respectively that constitute by insulating material, the adaptor includes first locking portion, treats to have a through-hole on the fixed copper bar, first retaining member passes in proper order through-hole, first locking portion, and with support piece connects, treat fixed copper bar the adaptor with support piece quilt first retaining member is fixed.

2. The copper bar fixing device as claimed in claim 1, wherein the supporting member is provided with a limiting portion, and the rotation of the copper bar to be fixed is limited by the limiting portion during the locking and fixing of the first locking member to the first locking portion.

3. The copper bar fixing device as claimed in claim 2, wherein the limiting portion comprises a sunken groove, the first locking portion of the adaptor is located in the sunken groove, and the adaptor is accommodated in the sunken groove; the bottom surface of the copper bar to be fixed is accommodated in the sinking groove.

4. The copper bar fixing device as claimed in claim 3, wherein the first locking portion is formed by a first screw hole on the adaptor; the first locking member comprises a first bolt, and the size of the first bolt is matched with that of the first screw hole;

5. The copper bar fixing device as claimed in claim 3, wherein the adaptor comprises a first connecting plate and a second connecting plate corresponding to adjacent surfaces of the support member, the first connecting plate is received in the sinking groove, the first locking portion is located on the first connecting plate, and the second connecting plate is fixed to the support member.

6. The copper bar fixing device as claimed in claim 5, wherein the copper bar fixing device comprises a second locking member; the second connecting plate is provided with a second locking part, the support is provided with a fixing hole, and the second locking piece penetrates through the fixing hole and is connected with the second locking piece.

7. The copper bar fixing device as claimed in claim 6, wherein the second locking portion is formed by a second screw hole on the second connecting plate of the adaptor; the second retaining member includes a second bolt, and the size of the second bolt matches the size of the second screw hole.

8. The copper bar fixing device as claimed in any one of claims 3 to 6, wherein the sinking groove is arranged along the width direction of the supporting member.

9. An electrical connection structure, characterized in that it comprises a copper bar fixing device as claimed in any one of claims 1 to 8.

10. The electrical connection structure as claimed in claim 9, wherein the end of the copper bar to be fixed has a terminal connection hole, and the terminal connection hole is connected to the terminal by a third locking member.