CN210430147U

CN210430147U - Transformer wiring device

Info

Publication number: CN210430147U
Application number: CN201921782333.9U
Authority: CN
Inventors: 胡超强; 徐加健; 林杉杉; 尤占山; 王骞能; 胡玉莹; 陈雪儿; 徐秋燕; 刘金勇; 梁健芬; 魏鹏飞
Original assignee: Guangzhou Panyu Cable Group Co Ltd
Current assignee: Guangzhou Panyu Cable Group Co Ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-04-28
Anticipated expiration: 2029-10-22

Abstract

The utility model relates to the technical field of electric power tools, in particular to a transformer wiring device, which comprises a wiring device body provided with a fastening mechanism and a wiring mechanism, wherein the fastening mechanism comprises a tension bolt, a conical compression sleeve and a conical contraction hole arranged in the wiring device body, the compression sleeve is coaxially arranged in the contraction hole, the conical compression sleeve is attached to the conical contraction hole, the small diameter end of the conical compression sleeve is upward, the conical side wall of the lower part of the compression sleeve is formed by enclosing at least two elastic compression sheets, the inner hole of the compression sleeve is a screw hole, one end of the tension bolt is hung outside the wiring device body through a screw head, the other end of the tension bolt is in threaded connection with the upper part of the compression sleeve, and the lower part of the compression sleeve; the utility model relates to a transformer termination, it is firm with being connected of transformer wiring stud, and loading and unloading are convenient, and loading and unloading occupation space is little.

Description

Transformer wiring device

Technical Field

The utility model relates to an electric power tool technical field specifically is a transformer termination.

Background

The transformer wiring device is used for fixing and electrically connecting an external lead with a transformer wiring stud, and generally comprises a fastening mechanism for fixedly connecting the transformer wiring stud and a wiring mechanism for fixedly connecting the lead. Traditional termination, its fastening device adopts threaded connection's mode directly to carry out threaded connection with termination on transformer wiring double-screw bolt usually, this kind of mode that relies on threaded connection only, it is not firm to become flexible easily and lead to connecting, and need rotate whole termination and just can make it carry out threaded connection with wiring double-screw bolt when loading and unloading, consequently must demolish external conductor earlier when loading and unloading, in addition it also needs great space to rotate whole termination, and a plurality of wiring double-screw bolts of general can arranging of transformer upper surface, the space is narrower, it needs great space to rotate whole termination, consequently, loading and unloading are also very inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide a transformer termination, it is firm with being connected of transformer wiring stud, loading and unloading convenience, and loading and unloading occupation space is little.

The utility model discloses a following technical scheme realizes:

a transformer wiring device comprises a metal wiring device body, wherein a fastening mechanism for fixedly connecting a transformer wiring stud and a wiring mechanism for fixedly connecting an external lead are arranged on the wiring device body, the fastening mechanism comprises a tension bolt, a metal compression joint sleeve and a contraction hole penetrating through the wiring device body, the compression joint sleeve is coaxially arranged in the contraction hole, the contraction hole is divided into an upper accommodating hole and a lower conical contraction hole, the compression joint sleeve is divided into an upper connecting cylinder and a lower conical compression joint cylinder, the small diameter ends of the conical contraction hole and the conical compression joint cylinder are arranged upwards, the inner diameter of the small diameter end of the conical contraction hole is smaller than the outer diameter of the large diameter end of the conical compression joint cylinder, the side wall of the conical compression joint cylinder is divided into at least two elastic compression joint sheets distributed along the circumferential direction at intervals through at least two axial slits, and the shaft holes of the connecting cylinder and the conical compression joint cylinder are respectively provided, one end of the tension bolt is hung at the top of the wiring device body through a screw head, the other end of the tension bolt extends into the compression hole and is in threaded connection with the connecting cylinder, and the shaft hole of the conical compression connecting cylinder is used for being in threaded connection with a transformer wiring stud.

Preferably, the taper angle that the hole inner wall was tightened to the toper with the taper angle that the lateral wall was pressed from both sides outward to the toper is tightened the hole inner wall and can be laminated mutually with the lateral wall outside the toper pressing cylinder.

Preferably, the crimping sleeve is the toper sleeve of integral type, and the crimping sleeve divide into from last down the connecting cylinder with the toper crimping section of thick bamboo, wherein the lateral wall of toper crimping section of thick bamboo is equipped with open seam.

Preferably, at least two of the elastic crimping pieces are uniformly distributed along the circumferential direction of the tapered crimping barrel.

Preferably, the tapered crimping barrel and the shaft hole of the connecting barrel are straight barrel type screw holes, and the thickness of the side wall of the tapered crimping barrel is gradually increased from top to bottom to form a tapered structure.

Preferably, the diameter of the shaft hole of the connecting cylinder is smaller than that of the shaft hole of the conical crimping cylinder, so that a convex step for limiting the stroke of the transformer wiring stud is formed at the joint of the connecting cylinder and the conical crimping cylinder.

Preferably, wiring mechanism includes clamp bolt and sets up the confession wire male wiring hole on the termination body, and the lateral wall in wiring hole is equipped with the screw, and clamp bolt and screw threaded connection thereby clamp bolt's one end stretches into wiring hole and can compress tightly the wire on the inside wall in wiring hole.

Preferably, the clamp bolt stretches into the one end in wiring hole still is equipped with the line ball board, and rotatable coupling is carried out with clamp bolt's tip to the back of line ball board, and the front of line ball board can compress tightly the wire on the inside wall in wiring hole.

Preferably, the wire pressing plate is a long plate with a concave arc-shaped cross section, so that the wire pressing plate can hold the side face of the wire in an axial direction.

Preferably, the screw head of the compression bolt is provided with an annular groove, so that the maximum torque which can be borne by the annular groove is smaller than the maximum torque which can be borne by other parts of the compression bolt.

Compared with the prior art, the transformer wiring device has the advantages that ① drives the wiring device body to move downwards relative to the crimping sleeve through the mutual matching of the crimping sleeve, the compression holes and the tensioning bolt on the basis of threaded connection of the crimping sleeve and a transformer wiring stud, and further the tapered crimping sleeve is radially extruded through the inner side wall of the tapered compression hole, so that a plurality of elastic crimping pieces of the tapered crimping sleeve contract inwards to circumferentially clamp the transformer wiring stud, the tapered crimping sleeve and the transformer wiring stud are in a locked state and are firmly connected and uniformly stressed, ② the tapered compression hole is identical to and attached to the taper angle of the tapered crimping sleeve, so that the conductive contact area is large, ③ the crimping sleeve is of an integrated structure, the overall structural strength is high, parts are reduced, the tapered crimping sleeve and the screw holes in the connecting cylinder are all screw holes with the same diameter, the thickness of the side wall of the tapered crimping cylinder is gradually increased from top to bottom to form a tapered structure, the design can achieve the effect that the tapered crimping cylinder and the transformer wiring stud can be firmly connected with a wire connection point, when the tapered wire connection device is mounted on a wire connection groove, the tapered wire plug, the wire plug is firmly connected with the wire plug, the wire plug can be more firmly connected with the wire plug, the wire plug can be more firmly connected with the wire plug, the wire plug, the wire plug.

The conception, the specific structure and the effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.

Drawings

Fig. 1 is a schematic structural diagram of the transformer wiring device of the present invention;

fig. 2 is a schematic view of the internal structure of the transformer wiring device of the present invention;

FIG. 3 is a schematic structural view of the crimp sleeve of FIG. 1;

fig. 4 is one of the schematic structural diagrams of the transformer wiring device according to the present invention;

fig. 5 is a second schematic view of a reference structure of the transformer wiring device according to the present invention in a use state;

fig. 6 is a schematic view of the internal structure of fig. 5.

Wherein: the terminal body 1, the fastening mechanism 11, the tie bolt 111, the crimping sleeve 112, the connecting cylinder 1121, the tapered crimping cylinder 1122, the elastic crimping piece 11221, the slit 11222, the tightening hole 113, the accommodating hole 1131, the tapered tightening hole 1132, the through hole 1133, the wiring mechanism 12, the press bolt 121, the screw head 1211, the annular groove 1212, the wiring hole 122, the wire pressing plate 123 and the transformer wiring stud 2.

Detailed Description

The utility model discloses a transformer termination is described further with the attached drawing below:

as shown in fig. 1-6, a transformer wiring device comprises a metal wiring device body 1, a fastening mechanism 11 for fixedly connecting a transformer wiring stud 2 and a wiring mechanism 12 for fixedly connecting an external lead are arranged on the wiring device body 1, the fastening mechanism 11 comprises a tension bolt 111, a metal crimping sleeve 112, and a tightening hole 113 arranged on the wiring device body 1, the crimping sleeve 112 is coaxially arranged in the tightening hole 113, the tightening hole 113 is divided into an upper accommodating hole 1131 and a lower tapered tightening hole 1132, a through hole 1133 is arranged at the top center of the accommodating hole 1131, the bottom of the tapered tightening hole 1132 penetrates through the bottom of the wiring device body 1, the crimping sleeve 112 is an integral tapered sleeve, the crimping sleeve 112 is divided into a connecting cylinder 1121 and a tapered crimping cylinder 1122 from top to bottom, the inner wall of the tapered tightening hole 1132 can be attached to the outer side wall of the tapered crimping cylinder 1122, and the small diameter end of the tapered tightening hole 1132 is arranged upward, the side wall of the tapered crimping barrel 1122 is divided into two elastic crimping pieces 11221 which are symmetrical along the circumferential direction through two axial slits 11222 which are oppositely arranged, an inner thread is arranged in a shaft hole of the crimping sleeve 112, the diameter of the shaft hole of the connecting barrel 1121 is smaller than that of the shaft hole of the tapered crimping barrel 1122, so that a convex step for limiting the stroke of the transformer wiring stud 2 is formed at the joint of the connecting barrel 1121 and the tapered crimping barrel 1122, the thickness of the side wall of the tapered crimping barrel 1122 is gradually increased from top to bottom to form a tapered structure, one end of the tensioning bolt 111 is hung outside the wiring device body 1 through a screw head, the other end of the tensioning bolt extends into the clamping hole 113 through a through hole 1133 and is in threaded connection with the connecting barrel 1121 of the crimping sleeve 112, the tapered crimping barrel 1122 of the crimping sleeve 112 is in threaded connection with the transformer wiring stud 2, and the wiring device body 1 can be driven to move downwards relative, the accommodating hole 1131 can accommodate the crimping sleeve 112, and then radially extrude the tapered crimping barrel 1122 of the crimping sleeve 112 through the inner side wall of the tapered tightening hole 1132, so that the plurality of elastic crimping pieces 11221 of the tapered crimping barrel 1122 are inwardly contracted to circumferentially hold the transformer terminal stud 2, and the tapered crimping barrel 1122 and the transformer terminal stud 2 are in a locking state, are firmly connected, and are uniformly stressed.

The wiring mechanism 12 comprises a compression bolt 121 and a wiring hole 122 which is arranged on the wiring device body 1 and used for inserting a lead, a screw hole is formed in the side wall of the wiring hole 122, the compression bolt 121 is in threaded connection with the screw hole, one end of the compression bolt 121 extends into the wiring hole 122 and is provided with a wire pressing plate 123, the back surface of the wire pressing plate 123 is rotatably connected with the end part of the compression bolt 121, and the front surface of the wire pressing plate 123 is of a long plate structure with a concave arc-shaped cross section, so that the side surface of the lead can be tightly held under the driving of the compression bolt 121 and the lead can be tightly pressed on the inner side wall of; the pressing bolt 121 is a hollow bolt, and a ring groove 1212 is formed in a head 1211 of the pressing bolt, so that the maximum torque that can be borne by the ring groove 1212 is smaller than the maximum torque that can be borne by other portions of the pressing bolt 121.

During installation, the installation can be carried out in an integral mode or in a split mode. When the integral type transformer terminal stud 2 is installed in an integral mode, the crimping sleeve 112 of the terminal device is in threaded connection with the transformer terminal stud 2, then the tensioning bolt 111 is screwed, the terminal device body 1 is driven to move downwards relative to the crimping sleeve 112, the conical crimping barrel 1122 of the crimping sleeve 112 is radially pressed through the inner side wall of the conical tightening hole 1132, and the elastic crimping pieces 11221 of the conical crimping barrel 1122 are contracted inwards to clasp the transformer terminal stud 2. During split type installation, can be earlier with the toper crimping section of thick bamboo 1122 and the transformer terminal stud 2 threaded connection of crimping sleeve 112, then overlap the termination body 1 outside crimping sleeve 112 from last to down, and connect the connecting cylinder 1121 of crimping sleeve 112 through tie bolt 111, then tighten tie bolt 111, order about the relative crimping sleeve 112 of termination body 1 and move down, and then the toper crimping section of thick bamboo 1122 of radially extruding crimping sleeve 112 through the inside wall of toper tightening hole 1132, make a plurality of elasticity crimping pieces 11221 of toper crimping section of thick bamboo 1122 shrink inwards and hold tightly transformer terminal stud 2, in the split type installation, no matter whether wiring mechanism 12 on the termination body 1 with external conductor fixed connection, all influence the operation.

Compared with the prior art, the transformer wiring device has the advantages that ① drives the wiring device body 1 to move downwards relative to the crimping sleeve 112 through the mutual matching of the crimping sleeve 112, the tightening hole 113 and the tightening bolt 111 on the basis of the threaded connection of the crimping sleeve 112 and the transformer wiring stud 2, the tapered crimping barrel 1122 of the crimping sleeve 112 is radially extruded through the inner side wall of the tapered tightening hole 1132, a plurality of elastic crimping pieces 11221 of the tapered crimping barrel 1122 contract inwards to circumferentially clamp the transformer wiring stud 2, the tapered crimping barrel and the transformer wiring stud 2 are in a locked state and are firmly connected and uniformly stressed, ② the tapered tightening hole 1132 and the tapered crimping barrel 1122 are in the same taper angle and are attached, so that the conductive contact area is large, ③ the crimping sleeve 112 is of an integrated structure, the overall structural strength is better, parts are reduced, screw holes with the same diameter in the screw holes in the tapered crimping barrel 1121, the thickness of the tapered crimping barrel is increased from top to bottom to form a tapered structure, the tapered crimping barrel 1212 is capable of enabling the wire connecting barrel 1212 to be capable of being pressed by the wire plug 1212 and capable of being pressed by the largest pressing the wire when the tapered bolt 1212 is mounted on the tapered crimping barrel 1212, the tapered wire 1212, the tapered crimping barrel 1212 can be capable of being capable of preventing damage of a wire 1212 and capable of being prevented by the wire 1212, the wire 1212 capable of being mounted on the wire 1212 and capable of being mounted on the tapered wire 1212, and capable of being mounted on the wire plug 1212, and capable of being mounted on the tapered wire 1212, and capable of being mounted on the wire 1212, and capable of preventing the wire 1212, and capable of being mounted on the wire 1212, and capable of being mounted on the wire 1212, and preventing the wire from being damaged by the wire 1212, and preventing the wire 1212, and capable of preventing the wire from being mounted on the wire from.

The present invention has been described in detail with reference to the embodiments and the accompanying drawings, but the present invention is not limited to these embodiments and the accompanying drawings, and is not limited to the transformer wiring device shape in the accompanying drawings, and it is a transformer wiring device that is more beautiful in various shapes shown in the accompanying drawings, although this shape is not the technical point of the protection claims, as long as the ordinary technical personnel in the field do not pay inventive labor, modify it, equally replace, improve and so on and obtain other embodiments and the accompanying drawings, all are within the protection scope of the present invention.

Claims

1. A transformer wiring device comprises a metal wiring device body, wherein a fastening mechanism for fixedly connecting a transformer wiring stud and a wiring mechanism for fixedly connecting an external lead are arranged on the wiring device body, and the transformer wiring stud and the wiring mechanism are characterized in that the fastening mechanism comprises a tension bolt, a metal compression joint sleeve and a contraction hole penetrating through the wiring device body, the compression joint sleeve is coaxially arranged in the contraction hole, the contraction hole is divided into an upper accommodating hole and a lower conical contraction hole, the compression joint sleeve is divided into an upper connecting cylinder and a lower conical compression joint cylinder, the small diameter ends of the conical contraction hole and the conical compression joint cylinder are upwards arranged, the inner diameter of the small diameter end of the conical contraction hole is smaller than the outer diameter of the large diameter end of the conical compression joint cylinder, the side wall of the conical compression joint cylinder is divided into at least two elastic compression joint sheets distributed at intervals along the circumferential direction through at least two axial slits, and the shaft holes of the connecting cylinder, one end of the tension bolt is hung at the top of the wiring device body through a screw head, the other end of the tension bolt extends into the compression hole and is in threaded connection with the connecting cylinder, and the shaft hole of the conical compression connecting cylinder is used for being in threaded connection with a transformer wiring stud.

2. The transformer wiring device according to claim 1, wherein the taper angle of the inner wall of the tapered compact hole is the same as the taper angle of the outer wall of the tapered crimping barrel, so that the inner wall of the tapered compact hole and the outer wall of the tapered crimping barrel can be attached to each other.

3. The transformer termination of claim 1, wherein the crimp sleeve is a one-piece tapered sleeve that divides from top to bottom into the connector barrel and the tapered crimp barrel, wherein a sidewall of the tapered crimp barrel is provided with the slit.

4. The transformer wiring device according to claim 1, wherein at least two of the elastic crimping pieces are uniformly distributed along a circumferential direction of the tapered crimping barrel.

5. The transformer wiring device according to claim 1, wherein the shaft holes of the tapered crimping barrel and the connecting barrel are straight barrel type screw holes, and the thickness of the side wall of the tapered crimping barrel is gradually increased from top to bottom to form a tapered structure.

6. The transformer wiring device according to claim 1, wherein a diameter of the shaft hole of the connector barrel is smaller than a diameter of the shaft hole of the tapered crimp barrel, thereby forming a step for limiting a stroke of the transformer wiring stud at an intersection of the connector barrel and the tapered crimp barrel.

7. The transformer wiring device according to any one of claims 1 to 6, wherein the wiring mechanism includes a press bolt and a wiring hole provided in the wiring device body for insertion of the conductor, a side wall of the wiring hole is provided with a screw hole, the press bolt is screw-coupled to the screw hole, and one end of the press bolt is inserted into the wiring hole so as to press the conductor against an inner side wall of the wiring hole.

8. The transformer wiring device according to claim 7, wherein a tension plate is further provided at an end of the compression bolt extending into the wiring hole, a rear surface of the tension plate is rotatably connected to an end portion of the compression bolt, and a front surface of the tension plate can press the wire against an inner side wall of the wiring hole.

9. The transformer wiring device according to claim 8, wherein the wire-pressing plate is a long plate having a concave arc-shaped cross section so as to be capable of holding the side surface of the wire in the axial direction.

10. The transformer wiring device according to claim 7, wherein a ring groove is formed in the head of the compression bolt, so that the maximum torque that can be borne by the ring groove is smaller than the maximum torque that can be borne by other portions of the compression bolt.