CN110854552A

CN110854552A - Wire pressing terminal

Info

Publication number: CN110854552A
Application number: CN201910989362.0A
Authority: CN
Inventors: 张春建; 呼丹; 崔艳磊; 王炳尧
Original assignee: China Aviation Optical Electrical Technology Co Ltd
Current assignee: China Aviation Optical Electrical Technology Co Ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-02-28
Anticipated expiration: 2039-10-17
Also published as: CN110854552B

Abstract

The present invention relates to a wire crimping terminal. The wire pressing terminal comprises a fixing frame, conductive plates are relatively fixed on the fixing frame, a driving piece is mounted on the fixing frame, a wire pressing screw is mounted on the driving piece through a screw hole, a wire pressing part is arranged on or connected with the wire pressing screw, a wire pressing space is formed between the wire pressing part and the conductive plates, the driving piece floats in the axial direction of the wire pressing screw and is rotatably mounted on the fixing frame in the circumferential direction, an elastic piece is further arranged on one side, facing away from the wire pressing part, of the driving piece on the fixing frame, the fixing frame stops the elastic piece in the direction facing away from the wire pressing part, and when the wire pressing part presses the wire, the driving piece and the elastic piece elastically abut against each other and are. The elastic piece can provide the effort that the driving piece orientation compressed tightly the direction when line ball portion compresses tightly, has guaranteed the reliability that the wire compressed tightly like this on the one hand, and on the other hand has also improved the screw locking power between driving piece and the line ball screw, and the conductive connection is more reliable.

Description

Wire pressing terminal

Technical Field

The invention relates to the field of electric connection, in particular to a wire pressing terminal.

Background

In the power distribution industry, the output end of a high-power cable generally adopts a form that a copper wire is crimped with an OT/UT terminal, but the traditional wiring mode has a plurality of disadvantages. Firstly, the wiring mode is not suitable for a frequently-switched link, and the traditional one-time compression molding can cause unstable connection and troublesome disconnection and connection when the frequently-switched link is switched on and switched off; secondly, the wire diameter that this kind of mode of connection can adapt is generally less, is not suitable for the connection occasion that the wire diameter is too big.

To such problem, the chinese utility model patent that the publication number is CN206864672U of granting just discloses a big line footpath photovoltaic binding post external component and binding post who uses, and this kind of binding post includes the electric current strip, has seted up threaded hole on the electric current strip, and threaded hole internal rotation is equipped with housing screw, and this housing screw lower extreme is connected with the compression steel sheet, and the compression steel sheet lower extreme is provided with the conducting strip of being connected with the electric current strip electricity, forms between compression steel sheet and the conducting strip to be used for pegging graft electrically conductive grafting space. After the wire is inserted into the plugging space, the wire can be pressed on the conductive sheet by screwing the compression screw, so that the connection between the wire and the current bar is realized.

Compared with the traditional wiring mode, the wiring terminal is relatively convenient to detach and use various wire diameters, but can not be guaranteed to be pressed all the time when being pressed by the pressing screw, and particularly when the wiring terminal is used in a vibration field, the pressing screw is easy to loosen, so that the conductive connection is unreliable.

Disclosure of Invention

The invention aims to provide a wire pressing terminal, which is used for solving the problem that the wire pressing of a wiring terminal in the prior art is unreliable.

The wire pressing terminal comprises a fixing frame, conductive plates are relatively fixed on the fixing frame, a driving piece is mounted on the fixing frame, a wire pressing screw is mounted on the driving piece through a screw hole, a wire pressing part is arranged on or connected with the wire pressing screw, a wire pressing space is formed between the wire pressing part and the conductive plates, the driving piece floats in the axial direction of the wire pressing screw and is rotatably mounted on the fixing frame in the circumferential direction, an elastic piece is further arranged on one side, facing away from the wire pressing part, of the driving piece on the fixing frame, the fixing frame stops the elastic piece in the direction facing away from the wire pressing part, and when the wire pressing part presses the wire, the driving piece and the elastic piece elastically abut against each other and are.

The wire pressing terminal can drive the wire pressing part to tightly press the wire through the wire pressing screw, and meanwhile, the elastic piece can provide acting force towards the pressing direction for the driving piece when the wire pressing part is tightly pressed, so that the wire pressing reliability is guaranteed, the thread locking force between the driving piece and the wire pressing screw is improved, and the conductive connection is reliable.

Furthermore, the fixing frame comprises two opposite side walls, the driving piece is arranged on the two opposite side walls, the line pressing screw is arranged between the two opposite side walls, the elastic piece is an arched elastic piece, two ends of the elastic piece are arranged on the two side walls, and the arched elastic piece is elastically abutted to the driving piece through an arch top of the arched elastic piece. The arched elastic sheet is used for providing elastic pressing force for the driving piece, so that the installation is convenient, and the structure is relatively simple.

In order to facilitate screwing of the line pressing screw, the arched elastic sheet is provided with a avoiding hole for the line pressing screw to pass through.

Specifically, two opposite side walls are provided with mounting holes, the driving piece is in a strip block shape, and two ends of the arched elastic piece and the two ends of the driving piece are inserted into the mounting holes. The connection of the arched elastic sheet and the driving piece with the fixing frame is realized through the mounting hole, and the operation is simple and convenient. More specifically, the shape of the mounting hole opening is an inverted convex shape, two ends of the arched elastic sheet and the driving piece are located in a large hole portion of the inverted convex shape hole opening, the size of the inverted convex shape hole opening in the height direction is larger than the width of the strip-shaped block-shaped driving piece, the size of the small hole portion of the inverted convex shape hole opening in the width direction is smaller than the width of the strip-shaped block-shaped driving piece, and two side faces of the strip-shaped block-shaped driving piece in the width direction of the two ends are respectively provided with a sliding groove which is in sliding fit with the. When the device is installed, the driving piece is vertically inserted into the installation hole and then is rotated by 90 degrees, at the moment, the step of the inverted convex hole limits the driving piece, the hole edge of the large hole part of the inverted convex hole guides the driving piece to float, and the driving piece can be limited in a plane perpendicular to the compression screw rod.

On the basis of the above various schemes, the fixing frame and the conducting plate can be also detachably connected in a split way.

Of course, on the basis of the various schemes, the wire pressing part can also be a pressing block which is axially fixed and circumferentially and rotatably arranged on the wire pressing screw, so that the pressing block can tightly press the wire immovably, and the wire pressing is more reliable.

Specifically, any one of the following three schemes may be adopted:

1. the unthreaded hole that link up from top to bottom is equipped with on the briquetting, and the lower extreme cartridge of line ball screw has from upwards passing down the connecting pin of unthreaded hole, and the connecting pin just prevents briquetting and line ball screw and break away from through the backing pin and the line ball screw connection of radial cartridge.

2. The pressing block is provided with a through unthreaded hole, the lower end of the line pressing screw is provided with a connecting section penetrating through the unthreaded hole, the diameter of the connecting section is smaller than that of the line pressing screw, and a retaining ring for preventing the pressing block from being separated from the line pressing screw is arranged at one end penetrating through the unthreaded hole on the connecting section.

3. The pressing block is provided with a through unthreaded hole, and the lower end of the pressing line screw is in threaded connection with an anti-falling screw which penetrates through the unthreaded hole from bottom to top to realize connection with the pressing block.

Preferably, the conductive pad block is fixed on the conductive plate and matched with the pressing block to clamp the wire, and the opposite clamping surfaces of the conductive pad block and the pressing block are both arc surfaces, so that the wire is convenient to clamp.

Further, the structure design is optimized, and the threading channel defined by the conductive cushion block and the pressing block is positioned between the two opposite side walls.

Or further optimize, all be equipped with the concave-convex structure that is used for increasing the frictional force between the wire on the clamping face of electrically conductive cushion and briquetting, more help pressing from both sides tight wire.

Drawings

FIG. 1 is a perspective view of a first embodiment of a wire clip according to the present invention;

FIG. 2 is a perspective view of another view of the wire clip of the present invention;

FIG. 3 is a schematic diagram of a press block and a conductive pad of the wire clip according to the present invention;

FIG. 4 is an exploded perspective view of a first embodiment of a wire clip according to the present invention;

FIG. 5 is an exploded perspective view of a second embodiment of the wire clip of the present invention;

fig. 6 is an exploded perspective view of a third embodiment of the wire clip of the present invention.

In the figure: 1. a fixed mount; 10. a bolt assembly; 11. a mounting orifice; 2. a conductive plate; 20. a conductive cushion block; 200. a tooth pattern; 210. an occlusion groove; 3. a drive member; 30. a chute; 31. briquetting; 32. an arched shrapnel; 33. a retainer ring; 34. a wire pressing screw; 35. an anti-drop screw; 37. a stop pin; 38. connecting pins; 39. an auxiliary binding screw; 310. engaging teeth; 390. and a wiring hole.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 4, the first embodiment of the wire pressing terminal of the present invention includes a fixing frame 1, the fixing frame 1 is a U-shaped frame including two opposite side walls, a conductive pad 20 and a conductive plate 2 are fixedly mounted on a bottom edge of the U-shaped frame through a bolt assembly 10, the conductive pad 20 is in contact with and electrically connected to the conductive plate 2, and the conductive pad 20 is located on a side of the conductive plate 2 opposite to the bottom edge of the U-shaped frame.

All be equipped with mounting hole 11 on the both sides wall of mount 1, mounting hole 11 is the upside and is the big hole part, the downside is the inverted convex shape hole of aperture part, and mount 1 installs rectangular massive driving piece 3 and arch shell fragment 32 through these two mounting hole 11. The middle part of the long blocky driving piece 3 is provided with a threaded hole which is communicated up and down, a line pressing screw 34 is screwed in the threaded hole, and the lower end of the line pressing screw 34 is connected with a pressing block 31. The pressing block 31 and the pressing screw 34 are axially fixed relatively and can rotate relatively in the circumferential direction, so that the pressing block 31 does not move and rotate along with the pressing screw 34 when the pressing screw 34 is rotated. Specifically, as shown in fig. 4, an axial insertion hole is formed in the lower end of the pressing line screw 34, the connecting pin 38 passes through the pressing block and is inserted into the axial insertion hole, and the pressing line screw 34 is inserted with the stop pin 37 to ensure that the connecting pin 38 does not fall out of the axial insertion hole, so that the pressing block 31 and the pressing line screw 34 are fixed in the axial direction and rotate relatively in the circumferential direction. In addition, an auxiliary binding screw 39 is mounted on the pressing block 31 through the binding hole 390 for connecting a signal wire.

Specifically, two sliding grooves 30 penetrating in the thickness direction are respectively arranged on two side faces of the driving part 3 in the width direction of two ends, the distance between the groove bottoms of the two sliding grooves 30 at the same end is larger than the width of the small hole part, and is slightly larger than the width of the large hole part so that the driving part 3 can turn over in the large hole part, and the size of the inverted convex hole in the height direction is larger than the width of the driving part 3. When the device is installed, the driving part 3 is firstly placed between two opposite side walls of the fixing frame 1 in a horizontal posture of a threaded hole axis, two ends of the driving part 3 are inserted into the inverted convex holes, then the driving part 3 is rotated by 90 degrees to a vertical posture of the threaded hole axis, and at the moment, sliding grooves 30 on two sides of two ends of the driving part 3 are respectively clamped on corresponding hole edges. When the pressing line screw 34 is screwed, the two ends of the driving member 3 are blocked by the hole edges of the large hole part to ensure that the driving member 3 does not rotate.

Form between briquetting 31 and the conductive cushion block 20 and supply wire male line ball space, as shown in fig. 3, briquetting 31 is the cambered surface towards the cooperation surface that compresses tightly of conductive cushion block 20, conductive cushion block 20 also is the cambered surface towards the cooperation surface that compresses tightly of briquetting 31, can form the cylindrical threading passageway that is located between the both sides wall of mount 1 when briquetting 31 and conductive cushion block 20 cooperate jointly, and all be equipped with concave-convex structure on the cooperation surface that compresses tightly of conductive cushion block 20 and briquetting 31, concave-convex structure can increase and the wire between frictional force, thereby further promote and compress tightly the effect. In this embodiment, the concave-convex structure is a tooth-shaped pattern 200, and the extending direction of the tooth-shaped pattern 200 is perpendicular to the extending direction of the threading channel.

In addition, the pressing block 31 and the conductive cushion block 20 are further provided with an engagement structure in the pressing direction, as shown in fig. 3, the pressing block 31 is provided with engagement teeth 310, the conductive cushion block 20 is provided with engagement grooves 210, and the engagement teeth 310 and the engagement grooves 210 are engaged with each other to prevent the wires from being extruded from the side surface due to extrusion force.

After the lead is inserted between the pressing block 31 and the conductive pad 20, the pressing screw 34 and the driving member 3 are relatively moved in the axial direction by rotating the pressing screw 34, so that the pressing screw 34 drives the pressing block 31 to move downwards to generate a pressing action. Of course, in order to facilitate the screwing of the pressing line screw 34, the arched elastic sheet 32 is provided with a relief hole corresponding to the pressing line screw 34, and the structure of the relief hole is obvious from fig. 1-2.

When the two ends of the driving piece 3 and the arched elastic piece 32 are inserted into the large hole part of the mounting hole, the arch top of the arched elastic piece 32 is in contact with the upper side face of the driving piece 3, the two ends of the arched elastic piece 32 are in contact with the hole walls of the mounting holes 11 of the two side walls, and the arched elastic piece 32 can support the driving piece 3 tightly in the mounting hole 11, so that the lower side face of the driving piece 3 is in contact with the step between the large hole part and the small hole part of the inverted convex mounting hole 11. Thus, at the initial stage of screwing the pressing screw 34, for example, when the pressing piece 31 is not yet contacted with the lead and the pressing screw 34 is not subjected to resistance in downward movement, the driving member 3 is pressed against the hole edge of the mounting hole 11 by the arched elastic sheet 32 without moving, when the pressing screw 34 is screwed to make the pressing screw 34 and the driving member 3 move relatively in the axial direction in the process that the pressing block 31 presses the wire until the wire is pressed and the pressing is not fixed, the pressing block 31 can not move downwards any more because the wire is pressed, the reaction force of the wire to the pressing block 31 makes the driving member 3 move upwards against part of the elastic force of the arched elastic sheet 32, the arched elastic sheet 32 is extruded, at the moment, the elastic force of the arched elastic sheet 32 is in turn provided for the downward elastic force of the line pressing screw 34, namely, the elastic force ensures that the pressing block 31 can always press the lead, and the thread locking force between the driving piece 3 and the line pressing screw 34 is ensured.

The wire pressing terminal of the invention is assembled on the fixed mount 1 in an elastic floating manner by the driving piece 3, so that when the wire pressing screw 34 screwed on the driving piece 3 presses the wire by the pressing block 31 at the end part of the wire pressing screw, a certain elastic retaining force is always provided, and the problem of poor vibration resistance of the existing rigid pressing mode is avoided.

The wire pressing terminal of the present invention is not limited to the above-described embodiments, and other embodiments are provided below.

In the second embodiment, as shown in fig. 5, in this embodiment, step-shaped holes with large ends and small middle are formed in the pressing block 31, a connecting section is arranged at the lower end of the pressing screw 34, the connecting section extends out from the small hole section in the middle of the step-shaped hole, a retaining ring 33 is arranged at one end of the connecting section extending out of the step-shaped hole downwards, the retaining ring 33 is located in the large diameter section at the lower side of the step-shaped hole, the pressing line cannot be affected, so that the axial anti-falling of the pressing block 31 and the pressing screw 34 is achieved, and the relative rotation between the pressing block 31 and. In addition, in this embodiment, the conductive plate 2 is provided with the salient point 21 protruding downwards on both sides of width direction respectively, and the salient point 21 can avoid the conductive plate 2 to rotate with the insulating mounting panel cooperation on the erection equipment.

In the third embodiment, as shown in fig. 6, in the present embodiment, a pressing block 31 is provided with a through unthreaded hole which is vertically through, a screw hole blind hole is provided at a lower end of a line pressing screw 34, and an anti-disengaging screw 35 penetrates through the unthreaded hole on the pressing block 31 to connect with the line pressing screw 34, so that axial anti-disengaging of the pressing block 31 and the line pressing screw 34 is realized, and relative rotation between the pressing block 31 and the line pressing screw 34 is not affected.

In the above embodiments, the wire pressing portion for pressing the wire in cooperation with the conductive pad block is a pressing block detachably connected to the wire pressing screw, and in other embodiments, the wire pressing portion may be a pressing block integrally disposed on the wire pressing screw, and the pressing block may be disc-shaped, so that the wire can be pressed when the pressing block rotates along with the wire pressing screw; in the above embodiments, the conductive pad block is disposed on the conductive plate and is disposed under the conductive wire, and in other embodiments, the conductive pad block may be omitted and the conductive wire may be directly pressed onto the conductive plate.

The elastic member for providing the elastic force to the driving member may also be a spring, for example, the arched elastic sheet in the first embodiment is replaced by a rigid supporting plate, and a cylindrical spring is interposed between the supporting plate and the driving member to provide the elastic force to the driving member.

Of course, the fixing frame may have a U-shape, may include only two opposite side walls, or may have any other shape, and functions to fix the conductive plate, the driving member, and the spring, and enclose these components as much as possible inside. As for the shape that installs the installation drill way of driving piece and arch shell fragment on the mount also can change, for example for ordinary rectangle, only need the both ends of driving piece and arch shell fragment to insert, as for how guarantee the direction removal of driving piece and arch shell fragment on line ball screw axial direction, the accessible sets up the guide structure who leads line ball screw on axial direction as to on the mount, like this because line ball screw's axis direction is confirmed basically, it also can guarantee with driving piece screw-thread fit that the direction that the driving piece takes place to remove is also axial.

In other embodiments, the fixing frame and the conductive plate may be non-detachably connected or welded; the concave-convex structures on the conductive cushion block and the pressing block can also be corrugated structures or densely distributed salient points.

Claims

1. The utility model provides a line ball terminal, which is characterized by, including the mount, the mount relatively fixed has the current conducting plate, install the driving piece on the mount, install the line ball screw through the screw on the driving piece, be equipped with on the line ball screw or be connected with line ball portion, line ball space has between line ball portion and the current conducting plate, the driving piece floats at the axial direction of line ball screw, it installs on the mount to go up the gyration in the circumferencial direction, still be equipped with the elastic component on one side of the line ball portion dorsad of driving piece on the mount, and the mount stops the elastic component in the direction of line ball portion dorsad, when line ball portion compresses tightly the wire, the driving piece offsets with the elastic component elasticity and receives the elastic.

2. The crimping terminal as claimed in claim 1, wherein the fixing frame includes two opposite side walls, the driving member is mounted on the two opposite side walls, the crimping screw is disposed between the two opposite side walls, the resilient member is an arched resilient piece having two ends mounted on the two side walls, and the arched resilient piece is resiliently urged against the driving member by an arch top thereof.

3. The wire crimping terminal as claimed in claim 2, wherein mounting openings are formed in the opposite side walls, the driving member is in the form of a bar-shaped block, and the arcuate resilient piece and the two ends of the driving member are inserted into the mounting openings.

4. The wire clip of claim 2 wherein the arcuate resilient tab defines relief holes for receiving a wire clip screw therethrough.

5. The wire crimping terminal as claimed in claim 3, wherein the mounting opening is of an inverted convex shape, the two ends of the arched elastic sheet and the driving member are located in a large hole portion of the inverted convex opening, the height direction of the inverted convex opening is larger than the width of the bar-shaped block driving member, the width direction of a small hole portion of the inverted convex opening is smaller than the width of the bar-shaped block driving member, and sliding grooves which are in sliding fit with the hole edges of the large hole portion of the inverted convex opening in the height direction are respectively arranged on two side faces of the bar-shaped block driving member in the width direction of the two ends.

6. The wire crimping terminal as claimed in any one of claims 1 to 5, wherein the fixing frame is detachably connected to the conductive plate.

7. The wire crimping terminal as claimed in any one of claims 1 to 5, wherein the wire crimping portion is an axially fixed, circumferentially rotatable press-piece mounted on the crimping screw.

8. The wire pressing terminal as claimed in claim 7, wherein the pressing block has a through-going hole, and a connecting pin is inserted into a lower end of the wire pressing screw and passes through the through-going hole from bottom to top, and the connecting pin is connected to the wire pressing screw through a radially inserted stopper pin to prevent the pressing block from being separated from the wire pressing screw.

9. The wire pressing terminal as claimed in claim 7, wherein the pressing block is provided with a through hole, the lower end of the wire pressing screw is provided with a connecting section passing through the through hole, the diameter of the connecting section is smaller than that of the wire pressing screw, and a retainer ring for preventing the pressing block from being separated from the wire pressing screw is mounted at one end of the connecting section passing through the through hole.

10. The wire pressing terminal as claimed in claim 7, wherein the pressing block is provided with a through hole, and the lower end of the wire pressing screw is connected with an anti-drop screw passing through the through hole from bottom to top through the screw hole.