CN110611179A - A transformer wiring device - Google Patents

Abstract

The invention relates to the technical field of power tools, in particular to a transformer wiring device, which includes a wiring device body provided with a fastening mechanism and a wiring mechanism. The fastening mechanism includes a tension bolt, a tapered crimping sleeve, and a wiring The conical compression hole of the device body, the crimping sleeve is coaxially built into the constriction hole, the conical crimping sleeve is in contact with the conical constriction hole with the small diameter end facing upwards, the conical side wall of the lower part of the crimping sleeve It is surrounded by at least two elastic crimping pieces. The inner hole of the crimping sleeve is a screw hole. One end of the tension bolt is hung outside the body of the wiring device through the screw head, and the other end is threadedly connected to the upper part of the crimping sleeve. The lower part of the crimping sleeve is threadedly connected to the transformer wiring stud; the transformer wiring device of the present invention is firmly connected to the transformer wiring stud, easy to assemble and disassemble, and takes up little space.

Description

A transformer wiring device

technical field

The invention relates to the technical field of power tools, in particular to a transformer wiring device.

Background technique

The transformer wiring device is used to fix and electrically connect the external wires to the transformer wiring studs, and generally includes a fastening mechanism for fixedly connecting the transformer wiring studs and a wiring mechanism for fixing the connecting wires. The fastening mechanism of the traditional wiring device usually uses threaded connection to directly thread the wiring device to the transformer terminal stud. This method of purely relying on the threaded connection is easy to loosen and cause the connection to be unreliable, and when loading and unloading It is necessary to rotate the entire wiring device to make it threaded with the terminal studs, so the external wires must be removed when loading and unloading. In addition, rotating the entire wiring device also requires a large space, and the upper surface of the transformer is generally arranged with multiple terminal studs , The space is relatively narrow, and the rotation of the entire wiring device requires a large space, so it is extremely inconvenient to install and disassemble.

Contents of the invention

The object of the present invention is to overcome the defects in the prior art, and provide a transformer wiring device, which is firmly connected to the transformer wiring studs, easy to assemble and disassemble, and takes up little space for assembly and disassembly.

The present invention is achieved through the following technical solutions:

A transformer wiring device, comprising a metal wiring device body, the wiring device body is provided with a fastening mechanism for fixedly connecting transformer wiring studs and a wiring mechanism for fixedly connecting external wires, the fastening mechanism includes tension bolts, The metal crimping sleeve and the compression hole that runs through the body of the wiring device. The crimping sleeve is coaxially built into the compression hole. The compression hole is divided into the upper accommodation hole and the lower tapered compression hole. The crimping sleeve is divided into The upper connecting barrel and the lower tapered crimping barrel, the tapered compression hole and the tapered crimping barrel are set with the small diameter end facing upwards, and the inner diameter of the small diameter end of the tapered constricting hole is smaller than the outer diameter of the large diameter end of the conical crimping barrel, The side wall of the conical crimping barrel is divided into at least two elastic crimping pieces spaced along the circumferential direction through at least two axial slits. The shaft holes of the connecting barrel and the conical crimping barrel are respectively provided with internal threads, and the One end of the tightening bolt is hung on the top of the wiring device body through the screw head, and the other end extends into the tightening hole and is threadedly connected with the connecting barrel. The shaft hole of the tapered crimping barrel is used for threading the transformer terminal stud.

Preferably, the taper angle of the inner wall of the tapered constriction hole is the same as the taper angle of the outer wall of the conical crimping barrel, so that the inner wall of the conical constricting hole and the outer wall of the conical crimping barrel can fit together.

Preferably, the crimping sleeve is an integral tapered sleeve, and the crimping sleeve is divided into the connecting sleeve and the conical crimping sleeve from top to bottom, wherein the side of the conical crimping sleeve The wall is provided with the slit.

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

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

Preferably, the diameter of the shaft hole of the connecting cylinder is smaller than the diameter of the shaft hole of the conical crimping cylinder, so that a gap for limiting the stroke of the transformer terminal stud is formed at the junction of the connecting cylinder and the conical crimping cylinder. convex steps.

Preferably, the wiring mechanism includes a compression bolt and a wiring hole provided on the wiring device body for the insertion of the wire. The side wall of the wiring hole is provided with a screw hole, and the compression bolt is threadedly connected to the screw hole. One end of the compression bolt extends Into the wiring hole so that the wire can be pressed against the inner wall of the wiring hole.

Preferably, one end of the clamping bolt extending into the wiring hole is also provided with a clamping plate, the back of the clamping plate is rotatably connected to the end of the clamping bolt, and the front of the clamping plate can compress the wire on the on the inside wall of the wiring hole.

Preferably, the wire crimping plate is a long plate with a concave arc in cross section so as to be able to hold the conductor laterally in the axial direction.

Preferably, a ring groove is provided on the screw head of the compression bolt, so that the maximum torque that the ring groove can bear is smaller than the maximum torque that other parts of the compression bolt can bear.

Compared with the prior art, the beneficial effects of a transformer wiring device in the present invention are: ①Through the mutual cooperation of the crimping sleeve, the tightening hole and the tension bolt, the crimping sleeve and the transformer wiring stud are screwed together; On the basis, the body of the wiring device is driven to move downward relative to the crimping sleeve by tightening the tension bolt, and then radially squeezes the conical crimping sleeve of the crimping sleeve through the inner wall of the conical constriction hole, so that the conical Several elastic crimping pieces of the crimping barrel shrink inward and hug the transformer wiring studs in the circumferential direction, so that the conical crimping barrel and the transformer wiring studs are in a locked state, the connection is firm, and the force is uniform; ②Conical tightening The hole and the conical crimping barrel have the same taper angle and fit together, so that the conductive contact area is large; ③The crimping sleeve is an integrated structure, the overall structural strength is better, and the number of parts is reduced; ④The conical crimping barrel and The screw holes in the connecting barrel are all equal-diameter screw holes, and the thickness of the side wall of the conical crimping barrel gradually increases from top to bottom to form a tapered structure. This design can realize the connection between the conical crimping barrel and the transformer wiring screw. The threaded connection of the column can also realize the conical structure of the conical crimping barrel, and make the structural strength of the conical structure better; The junction of the barrel and the conical crimping barrel forms a convex step for limiting the stroke of the transformer wiring stud, which can prevent the crimping sleeve and the transformer wiring stud from being excessively squeezed and damage the wiring device or the wiring screw. ⑥The wiring structure adopts the method of pressing the external wire with the pressing bolt, which is reliable in connection and easy to operate; The long plate can effectively increase the fixing reliability of the wire; ⑧by setting a ring groove on the screw head of the compression bolt, the maximum torque that the ring groove can bear is less than the maximum torque that other parts of the compression bolt can bear, so It can be designed so that the maximum torque that the ring groove can bear can be used as the design torque of the compression bolt, and the compression bolt is tightened through the screw head on the upper part of the ring groove during installation. When the design torque is reached, the screw head breaks at the ring groove, thereby To prevent the compression bolt from crushing the cable, it can be disassembled through the screw head under the ring groove during disassembly.

The idea, specific structure and effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

Description of drawings

Fig. 1 is the structural representation of transformer wiring device of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the transformer wiring device of the present invention;

Fig. 3 is a schematic structural view of the crimping sleeve in Fig. 1;

Fig. 4 is one of the reference structural diagrams of the use state of the transformer wiring device of the present invention;

Fig. 5 is the second schematic diagram of the use state reference structure of the transformer wiring device of the present invention;

FIG. 6 is a schematic diagram of the internal structure of FIG. 5 .

Among them: terminal body 1, fastening mechanism 11, tension bolt 111, crimping sleeve 112, connecting barrel 1121, conical crimping barrel 1122, elastic crimping piece 11221, slot 11222, tightening hole 113, accommodating Hole 1131, tapered tightening hole 1132, through hole 1133, wiring mechanism 12, compression bolt 121, screw head 1211, ring groove 1212, wiring hole 122, pressure plate 123, transformer connection stud 2.

Detailed ways

A transformer wiring device of the present invention will be further described below in conjunction with the accompanying drawings:

As shown in Figures 1-6, a transformer wiring device includes a metal wiring device body 1, and the wiring device body 1 is provided with a fastening mechanism 11 for fixedly connecting the transformer terminal stud 2 and a wiring for fixedly connecting external wires. Mechanism 12, the fastening mechanism 11 includes a tension bolt 111, a metal crimping sleeve 112, and a tightening hole 113 provided on the wiring device body 1. The crimping sleeve 112 is coaxially built into the tightening hole 113, and the tightening hole 113 is divided into It is an upper accommodation hole 1131 and a lower conical constriction hole 1132. A through hole 1133 is provided in the center of the top of the accommodation hole 1131. The bottom of the conical constriction hole 1132 runs through the bottom of the wiring device body 1. The crimping sleeve 112 is One-piece tapered sleeve, the crimping sleeve 112 is divided into a connecting barrel 1121 and a conical crimping barrel 1122 from top to bottom, the inner wall of the conical tightening hole 1132 and the outer wall of the conical crimping barrel 1122 can fit together and The small-diameter end is set upwards, and the side wall of the conical crimping sleeve 1122 is divided into two elastic crimping pieces 11221 spaced symmetrically along the circumferential direction through two oppositely arranged axial slits 11222. The axis of the crimping sleeve 112 The hole is provided with an internal thread, and the diameter of the shaft hole of the connecting cylinder 1121 is smaller than the diameter of the shaft hole of the conical crimping cylinder 1122, so that a connection between the connecting cylinder 1121 and the conical crimping cylinder 1122 is formed for connecting the transformer terminal stud 2 The stroke is limited by the convex step. The thickness of the side wall of the conical crimping barrel 1122 gradually increases from top to bottom to form a conical structure. One end of the tension bolt 111 is hung outside the wiring device body 1 through the screw head, and the other end is Extend into the tightening hole 113 through the through hole 1133 and threadedly connect with the connecting barrel 1121 of the crimping sleeve 112, the tapered crimping barrel 1122 of the crimping sleeve 112 is threadedly connected with the transformer terminal stud 2, and tighten the tension bolt 111 can drive the wiring device body 1 to move downward relative to the crimping sleeve 112, the accommodating hole 1131 can accommodate the crimping sleeve 112, and then press the cone of the crimping sleeve 112 radially through the inner wall of the tapered constriction hole 1132. Shaped crimping barrel 1122, so that several elastic crimping pieces 11221 of the conical crimping barrel 1122 shrink inward and hug the transformer terminal stud 2 circumferentially, so that the conical crimping barrel 1122 and the transformer terminal stud 2 are locked state, the connection is firm, and the force is even.

The wiring mechanism 12 includes a compression bolt 121 and a wiring hole 122 provided on the wiring device body 1 for wire insertion. The side wall of the wiring hole 122 is provided with a screw hole, and the compression bolt 121 is threadedly connected with the screw hole. One end of one end extends into the wiring hole 122 and is provided with a crimping plate 123. The back of the crimping plate 123 is rotatably connected to the end of the crimping bolt 121. The front of the crimping plate 123 is a long plate structure with a concave arc in section. , so that under the drive of the compression bolt 121, the side of the wire can be tightly held and the wire can be pressed on the inner wall of the wiring hole 122; The maximum torque that the ring groove 1212 can bear is smaller than the maximum torque that other parts of the compression bolt 121 can bear.

When installing, it can be installed integrally or separately. In the case of integral installation, first thread the crimping sleeve 112 of the wiring device to the transformer terminal stud 2, then tighten the tension bolt 111 to drive the wiring device body 1 to move downward relative to the crimping sleeve 112, and then through the cone The inner sidewall of the constriction hole 1132 radially squeezes the conical crimping barrel 1122 of the crimping sleeve 112, so that several elastic crimping pieces 11221 of the conical crimping barrel 1122 shrink inwardly and hug the transformer terminal stud 2 tightly. In split-type installation, the conical crimping barrel 1122 of the crimping sleeve 112 can be threadedly connected with the transformer terminal stud 2, and then the wiring device body 1 can be placed outside the crimping sleeve 112 from top to bottom, and passed through The tightening bolt 111 is connected to the connecting cylinder 1121 of the crimping sleeve 112, and then the tightening bolt 111 is tightened to drive the wiring device body 1 to move downward relative to the crimping sleeve 112, and then pass through the inner wall of the tapered tightening hole 1132 to radially Squeeze the conical crimping barrel 1122 of the crimping sleeve 112, so that several elastic crimping pieces 11221 of the conical crimping barrel 1122 shrink inward and hug the transformer terminal stud 2 tightly. During the split installation process, no matter the wiring device Whether the wiring mechanism 12 on the main body 1 is fixedly connected with the external wire does not affect the operation.

Compared with the prior art, the beneficial effects of a transformer wiring device in the present invention are: ① through the mutual cooperation of the crimping sleeve 112, the tightening hole 113 and the tension bolt 111, the crimping sleeve 112 and the transformer wiring stud 2 On the basis of the threaded connection, tighten the tension bolt 111 to drive the wiring device body 1 to move downward relative to the crimping sleeve 112, and then radially squeeze the crimping sleeve 112 through the inner wall of the conical tightening hole 1132 The conical crimping barrel 1122 makes several elastic crimping pieces 11221 of the conical crimping barrel 1122 shrink inward and hug the transformer terminal stud 2 in the circumferential direction, so that the conical crimping barrel 1122 and the transformer terminal stud 2 form a In the locked state, the connection is firm and the force is uniform; ②The conical tightening hole 1132 and the conical crimping barrel 1122 have the same taper angle and fit together, so that the conductive contact area is large; ③The crimping sleeve 112 is an integrated structure , the overall structural strength is better, and parts are reduced; ④The screw holes in the conical crimping barrel 1122 and the connecting barrel 1121 are all equal-diameter screw holes, and the thickness of the side wall of the conical crimping barrel 1122 gradually increases from top to bottom Thus forming a tapered structure, such a design can not only realize the threaded connection between the conical crimping barrel 1122 and the transformer terminal stud 2, but also realize the conical structure of the conical crimping barrel 1122, and make the structural strength of the conical structure stronger Good; ⑤The shaft hole diameter of the connecting barrel is smaller than the shaft hole diameter of the conical crimping barrel, so that a convex step is formed at the junction of the connecting barrel and the conical crimping barrel to limit the stroke of the transformer terminal stud, It can prevent the crimping sleeve and the transformer terminal stud from being too extruded and damage the wiring device or the terminal stud; ⑥The wiring structure adopts the compression bolt to compress the external wire, which is reliable in connection and easy to operate; ⑦The compression bolt 121 A rotatable wire crimping plate 123 is provided, and the crimping wire plate 123 is a concave arc-shaped long plate that can hold the wire tightly in the axial direction, which can effectively increase the fixing firmness of the wire; Set the ring groove 1212 so that the maximum torque that the ring groove 1212 can bear is less than the maximum torque that other parts of the compression bolt can bear, so it can be designed so that the maximum torque that the ring groove 1212 can bear can be used as the design torque of the compression bolt When installing, tighten the compression bolt through the screw head on the upper part of the ring groove 1212. When the design torque is reached, the screw head breaks at the ring groove 1212, so as to prevent the compression bolt from crushing the cable. screw for disassembly.

The present invention describes some implementations and accompanying drawings in detail, but the present invention is not limited to these embodiments and accompanying drawings, especially not limited to the shape of the transformer wiring device in the accompanying drawings, which show various A transformer wiring device with a more beautiful shape, although this shape is not the technical point claimed in the protection of the present invention, as long as those of ordinary skill in the art modify it, replace it equivalently, improve it, etc. according to the present invention without making creative efforts Other implementation modes and drawings thereof are within the protection scope of the present invention.

Claims (10)

1. A transformer wiring device, comprising a metal wiring device body, the wiring device body is provided with a fastening mechanism for fixedly connecting the transformer wiring studs and a wiring mechanism for fixedly connecting external wires, it is characterized in that the fastening The mechanism includes a tension bolt, a metal crimping sleeve, and a tightening hole that runs through the body of the wiring device. The crimping sleeve is coaxially built into the tightening hole. The tightening hole is divided into an upper accommodating hole and a lower tapered tightening hole. The crimping sleeve is divided into the upper connecting barrel and the lower conical crimping barrel. The small diameter ends of the conical compression hole and the conical crimping barrel are set up, and the inner diameter of the small diameter end of the conical constricting hole is smaller than that of the conical crimping barrel. The outer diameter of the large-diameter end, the side wall of the conical crimping barrel is divided into at least two elastic crimping pieces spaced along the circumferential direction through at least two axial slits, and the shaft holes of the connecting barrel and the conical crimping barrel are respectively There is an internal thread, one end of the tension bolt is hung on the top of the wiring device body through the screw head, the other end extends into the tightening hole and is threaded with the connecting barrel, and the shaft hole of the tapered crimping barrel is used to thread the transformer terminal stud. 2. The transformer wiring device according to claim 1, characterized in that, the taper angle of the inner wall of the tapered constriction hole is the same as the taper angle of the outer wall of the conical crimping barrel, so that the inner wall of the conical constriction hole is in line with the The outer wall of the tapered crimping barrel can fit together. 3. The transformer wiring device according to claim 1, wherein the crimping sleeve is an integrated tapered sleeve, and the crimping sleeve is divided into the connecting barrel and the tapered sleeve from top to bottom. A crimping barrel, wherein the side wall of the conical crimping 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 evenly distributed along the circumferential direction of the tapered crimping barrel. 5. The transformer wiring device according to claim 1, wherein the shaft holes of the conical crimping barrel and the connecting barrel are straight screw holes, and the thickness of the side wall of the conical crimping barrel is from top to bottom. Gradually increase to the bottom to form a tapered structure. 6. The transformer wiring device according to claim 1, wherein the diameter of the shaft hole of the connecting cylinder is smaller than the diameter of the shaft hole of the conical crimping cylinder, so that when the connecting cylinder and the conical crimping cylinder are connected A convex step is formed at the place for limiting the stroke of the transformer terminal stud. 7. The transformer wiring device according to any one of claims 1-6, characterized in that, the wiring mechanism includes a compression bolt and a wiring hole provided on the body of the wiring device for the insertion of a wire, and the side wall of the wiring hole is set There is a screw hole, and the compression bolt is threadedly connected with the screw hole, and one end of the compression bolt extends into the wiring hole so that the wire can be pressed tightly on the inner side wall of the wiring hole. 8. The transformer wiring device according to claim 7, characterized in that, one end of the clamping bolt extending into the wiring hole is also provided with a pressure plate, and the back of the pressure plate is in contact with the end of the pressure bolt. The connection is rotatable, and the front of the wire crimping plate can press the wire tightly on the inner wall of the wiring hole. 9 . The transformer wiring device according to claim 8 , wherein the crimping plate is a long plate with a concave arc in cross section so as to be able to hold the side of the wire axially. 10 . 10. The transformer wiring device according to claim 7, characterized in that, a ring groove is provided on the screw head of the compression bolt, so that the maximum torque that the ring groove can withstand is less than that of other parts of the compression bolt. maximum torque.