CN112072336B - Non-crimping connection fitting and connection method for wire connection - Google Patents
Non-crimping connection fitting and connection method for wire connection Download PDFInfo
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- CN112072336B CN112072336B CN202010872020.3A CN202010872020A CN112072336B CN 112072336 B CN112072336 B CN 112072336B CN 202010872020 A CN202010872020 A CN 202010872020A CN 112072336 B CN112072336 B CN 112072336B
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- pipe fitting
- fitting
- wall
- locking piece
- wire
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
- H01R4/5083—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using a wedge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/03—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations
- H01R11/09—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the relationship between the connecting locations the connecting locations being identical
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/027—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for connecting conductors by clips
Abstract
The invention provides a non-crimping connection fitting for wire connection and a connection method, belonging to the technical field of wire connection fittings, wherein the fitting comprises a locking piece which is hollow and has openings at two ends, a second pipe fitting, a first pipe fitting and an end cover; the inner wall of the locking piece is a spiral groove with the same texture as the conducting wire, and the outer wall of the locking piece is of a clamping structure; the inner wall of the second pipe fitting is embedded with the clamping structure of the locking piece, the outer wall of the second pipe fitting is provided with a plurality of sliding rails along the axial direction of the second pipe fitting, and the sectional area of the part, which penetrates into the second pipe fitting, of the locking piece along the axial direction of the locking piece is gradually reduced; the inner wall of the first pipe fitting is provided with a guide rail matched with the slide rail of the second pipe fitting, the outer walls of the two ends of the first pipe fitting are provided with threads for being in threaded connection with the end cover, the position of the threaded hole of the end cover is provided with a baffle for abutting against the second pipe fitting, and the baffle is provided with a first through hole for a lead to pass through; the cable splicing device does not need crimping, can realize splicing of the lead by utilizing a mechanical self-locking principle, and improves the splicing reliability of the cable.
Description
Technical Field
The present disclosure relates to the field of wire splicing fittings, and in particular, to a non-crimping splicing fitting and a splicing method for wire connection.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The splicing fitting is a fitting used for splicing two wires and can meet the mechanical and electrical performance requirements of the wires. The splicing fitting is the only means for realizing long-distance uninterrupted power transmission of the power transmission line, the service life of the overhead line and the line loss are directly influenced by the performance of the splicing fitting, and the splicing quality of the splicing fitting becomes an important measure for guaranteeing the safe operation of a power grid.
The inventor of the present disclosure finds that the splicing fitting currently used for connecting the wires mainly has three types, namely, a crimp-type splicing sleeve, a pre-twisted splicing strip and a bolt-type parallel groove clamp. The crimping type splicing sleeve is a splicing fitting which is most widely applied in a power transmission line, but when the fitting is installed, the fitting needs to be carried out strictly according to a crimping position and an operation sequence, so that the crimping process is complex, the construction efficiency is low, the crimping reliability is poor, the conduction performance is unstable, and the crimping easily damages a ground wire to cause operation accidents such as overtemperature, looseness, abrasion of the wire and even shedding of the wire. The preformed helical connecting strip has the problems that the preformed helical wire is frequently broken due to heating of the end part and increase of the operation life. Bolt type parallel groove clamp is often used in distribution lines, and when its long-time operation, because the subassembly that relates is more, has the contact surface and easily becomes flexible, leads to contact resistance increase, appears unusual high temperature scheduling problem.
Disclosure of Invention
In order to solve the defects of the prior art, the non-crimping connection fitting and the connection method for connecting the wires are provided, crimping is not needed during connection, the connection of the wires can be realized by utilizing a mechanical self-locking principle, and the original mechanical strength and conductivity of the wires can be achieved; the problem that the end part generates heat due to damage of the wire and the pre-glued wire caused by crimping can be effectively avoided, and the reliability of cable connection is improved.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
a first aspect of the present disclosure provides a non-crimping connection fitting for wire connection.
A non-crimping splicing fitting for wire connection comprises a locking piece, a first pipe fitting, an end cover and a second pipe fitting, wherein the locking piece is hollow and is provided with two open ends;
the inner wall of the locking piece is a locking structure matched with the outer wall structure of the lead, and the outer wall of the locking piece is embedded with the inner wall of the second pipe fitting through the clamping structure;
the cross section area of the part of the locking piece, which extends into the second pipe fitting, is gradually reduced along the axial direction of the locking piece; two ends of the first pipe fitting are respectively fixed with an end cover, and the end covers are provided with baffle plates with wire holes for abutting against the second pipe fitting.
As some possible implementations, the inner wall of the retaining member is a helical groove having the same texture as the wire.
As some possible realization modes, the outer wall of the second pipe fitting is provided with a plurality of sliding rails along the axial direction of the second pipe fitting, and the inner wall of the first pipe fitting is provided with a guide rail matched with the sliding rails of the second pipe fitting.
As possible implementation manners, the outer walls at the two ends of the first pipe fitting are provided with threads used for being in threaded connection with the end covers, the positions of the threaded holes of the end covers are provided with baffle plates used for abutting against the second pipe fitting, and the baffle plates are provided with first through holes used for allowing the conducting wires to pass through.
As some possible realization modes, the locking piece is of a truncated cone structure, and the outer wall of the truncated cone structure is provided with multiple layers of steps which are arranged in a highly staggered mode.
As a further limitation, each layer of ladder is provided with a plurality of clamping grooves which are arranged in a staggered mode, and each layer of ladder is in a cone frustum shape.
As some possible realization modes, the locking piece is of a cone frustum structure, and the outer wall of the cone frustum structure is provided with a plurality of slide ways.
As some possible implementations, the retaining member is formed by at least two discrete elements that are snap-fitted.
As some possible implementation manners, the second pipe fitting is a hollow cylindrical structure with openings at two ends, and a plurality of sliding rails are arranged on the outer wall of the second pipe fitting along the axial direction of the second pipe fitting.
As a further limitation, the first pipe fitting is of a hollow cylindrical structure with two open ends, and a plurality of guide rails matched with the slide rails of the second pipe fitting are arranged on the inner wall of the first pipe fitting along the axial direction of the first pipe fitting.
As some possible implementation manners, the end cover is of a nut structure, a baffle plate with a hole for abutting against the second pipe fitting is arranged on the outer end face of the nut, and a second through hole for screwing in is formed in at least one side face of the nut.
A second aspect of the present disclosure provides a wire non-crimp splicing method.
A non-crimping connection method for a wire, which uses the non-crimping connection fitting for wire connection according to the first aspect of the present disclosure, includes the following steps:
two end covers are respectively sleeved into two ends of a wire to be connected;
the locking piece is fixed at the end part of the lead and is tightly attached to the lead;
the two second pipe fittings are respectively sleeved on the two locking parts according to the matching relationship, and the second pipe fittings at the two ends are guided into the first pipe fitting according to the guide rail;
the end cover is locked with the first pipe fitting pipe through threads, and the baffle plate on the end cover abuts against the first pipe fitting.
As some possible implementations, a pin is driven from a through hole reserved on at least one side of the end cap, breaking the thread structure of the first tubular element.
Compared with the prior art, the beneficial effect of this disclosure is:
1. the splicing fitting provided by the disclosure can realize the splicing of the lead by utilizing a mechanical self-locking principle without crimping, and can achieve the original mechanical strength and conductivity; and can effectively avoid producing the damage and gluing the silk in advance and lead to the tip to generate heat scheduling problem because of the crimping to the wire, improve the reliability that the cable continues.
2. The spiral groove is arranged in the splicing fitting, so that the wire can be completely wrapped, the contact area between the fitting and the wire is effectively increased, and the gripping force and the conductivity of the wedge-shaped locking piece on the wire are improved.
3. The splicing fitting provided by the disclosure can realize splicing of the lead without crimping by utilizing a mechanical self-locking principle, avoids the problems of inconvenient hydraulic and explosion construction, unstable crimping quality and the like of splicing pipe on site, improves splicing quality from two aspects of structure and construction, and further improves the safety and reliability of power grid operation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
Fig. 1 is an overall schematic view of a non-crimping splicing fitting provided in embodiment 1 or embodiment 2 of the present disclosure.
Fig. 2 is an overall cross-sectional view of a non-crimping splice fitting provided in embodiment 1 of the present disclosure.
Fig. 3 is an assembly schematic diagram of a non-crimping splicing fitting provided in embodiment 1 of the present disclosure.
FIG. 4 is a schematic view of a wedge-shaped retaining member provided in example 1 of the present disclosure.
Fig. 5 is a schematic view of a stop sleeve provided in embodiment 1 of the present disclosure.
Fig. 6 is an overall cross-sectional view of a non-crimping splice fitting provided in embodiment 2 of the present disclosure.
Fig. 7 is an assembly schematic diagram of a non-crimping splicing fitting provided in embodiment 2 of the present disclosure.
FIG. 8 is a schematic view of a wedge-shaped retaining member provided in example 2 of the present disclosure.
Fig. 9 is a schematic view of a stop sleeve provided in embodiment 2 of the present disclosure.
Fig. 10 is a schematic view of a sleeve member provided in embodiment 1 or embodiment 2 of the present disclosure.
Fig. 11 is a cross-sectional view of a sleeve member provided in embodiment 1 or embodiment 2 of the present disclosure.
Fig. 12 is a schematic view of a compression end cap component provided in embodiment 1 or embodiment 2 of the present disclosure.
1-a wedge-shaped locking member; 2-a stop sleeve; 3-sleeving a pipe; 4, pressing an end cover; 5-a baffle plate; 6-a second via; 7-first via hole.
Detailed Description
The present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.
Example 1:
as shown in fig. 1, 2, 3, 4, and 5, embodiment 1 of the present disclosure provides a non-crimping splicing fitting for wire connection, including a wedge-shaped locking member 1, a stop sleeve 2, a sleeve 3, and a compression end cover 4;
the wedge-shaped locking part is composed of two identical structures, and the inner wall of the wedge-shaped locking part is a spiral groove with the same texture as the conducting wire, so that the conducting wire can be completely wrapped.
It is understood that, in other embodiments, the inner wall structure of the wedge-shaped locking member may also be other structures, such as a convex structure provided by using an anti-slip material, and the like, which may be designed by a person skilled in the art according to specific conditions and will not be described herein again.
It can be understood that, in other embodiments, the wedge-shaped locking member may have other shapes, such as a circular truncated cone shape or a trapezoidal truncated cone shape, as long as it can ensure that the sectional area of the portion extending into the retaining sleeve 2 along the axis direction of the locking member is gradually reduced, that is, it is sufficient to achieve mechanical self-locking with the retaining sleeve 2 through the wedge-shaped structure and the slot structure of the wedge-shaped locking member 1, and a person skilled in the art may select a specific shape according to a specific working condition, and details are not described here.
It is understood that in other embodiments, the wedge-shaped locking member portion is composed of three, four or more structures that are identical, as long as the wedge-shaped locking member portion can be spliced into a whole and the whole structure and the inner and outer wall structures are ensured, and the details are not described herein.
It is understood that in other embodiments, the portions of the wedge-shaped locking member may not be identical, as long as they can be spliced into a whole and ensure the whole structure and the inner and outer wall structures, and thus, the description thereof is omitted.
In the embodiment, the wedge-shaped locking piece 1 is of a stepped conical frustum structure, the outer wall of the stepped conical frustum can convert the axial force of a lead received by the wedge-shaped locking piece into a lateral force and an axial force which are uniformly distributed and perpendicular to the side surface of the conical frustum, and mechanical self-locking can be realized under the reaction force of an external stop sleeve.
Each layer of ladder of the outer wall of the ladder-shaped truncated cone is in a truncated cone shape, clamping grooves distributed in a staggered mode are formed in each layer, the wedge-shaped locking pieces can be effectively prevented from rotating when wires at two ends are subjected to reverse tension, workpieces are complex to process, the requirements for the process during installation are high, and the ladder-shaped truncated cone is suitable for connection of wires needing large holding power.
Specifically, the wedge-shaped locking piece 1 is composed of two identical structures, wherein the stepped cone frustum is provided with 6 layers of steps, each layer of step is in the shape of a cone frustum, the axial force of a lead wire borne by the step can be converted into the lateral force and the axial force which are uniformly distributed on the lateral surface of the cone frustum in a perpendicular mode, and mechanical self-locking can be achieved under the counter-acting force of the external locking sleeve 2. Every layer of circular truncated cone all is provided with 8 crisscross draw-in grooves that distribute, and wedge retaining member takes place rotatoryly when effectively preventing both ends wire from receiving reverse pulling force.
The inner wall of the stop sleeve 2 is a hollow structure which is embedded with the wedge-shaped locking piece 1, so that the reverse movement and rotation of the wedge-shaped locking piece 1 can be effectively prevented.
The shape of the stop sleeve 2 is cylindrical, 8 guide rail structures which are uniformly distributed are arranged on the outer wall of the stop sleeve, and when the hardware fitting is assembled, the stop sleeve is led in from two ends of the sleeve 3 so as to ensure that the stop sleeve 2 and internal components do not integrally rotate in the sleeve 3.
It can be understood that, in some other embodiments, the stop sleeve may have other structures, such as a triangular prism structure, a quadrangular prism structure, a pentagonal prism structure, and so on, as long as it can be ensured that the inner wall of the stop sleeve is set to be a hollow structure engaged with the wedge-shaped locking member 1, and the outer wall is set to be a uniformly distributed conduit structure, and it can be guided in from both ends of the sleeve 3 and ensure that the stop sleeve 2 and the internal components do not rotate integrally in the sleeve 3, and those skilled in the art can design according to specific working conditions, and will not be described herein again.
As shown in fig. 10 and 11, the sleeve 3 is a cylindrical structure, and the inner wall of the sleeve is provided with a guide rail structure matched with the stop sleeve 2, so that the stop sleeve 2 and the internal components are prevented from integrally rotating in the sleeve 3. And the outer walls at the two ends of the clamp are provided with M60 standard fine threads for matching with the compression end cover 4 to lock the whole hardware.
As shown in fig. 12, the compression end cap 4 is a hexagon nut-like structure, the overall shape of the compression end cap is similar to that of a hexagon nut, and M60 standard fine threads matched with the sleeve 3 are arranged inside the compression end cap and can be in threaded connection with the sleeve 3.
It can be understood that, in other embodiments, the compression end cover may also be a pseudo-pentagonal nut or a pseudo-tetragonal nut, and those skilled in the art may design the compression end cover according to specific working conditions, which is not described herein again.
One end of the pressing end cover 4 is provided with a baffle 5 for abutting against the inner structure of the hardware fitting, and the baffle is provided with a first circular through hole 7 which can enable a wire to pass through. The side surface of the sleeve is provided with a second through hole 6, and the screw thread of the sleeve 3 is damaged by the pin through the through hole on the side surface of the compression end cover 4 after the compression end cover 4 is screwed down during assembly, so that the self-locking performance of the screw thread is improved.
It is understood that, in other embodiments, the first through hole and the second through hole may also be in other shapes, such as square, rectangular, or trapezoidal, and the like, and those skilled in the art may design the first through hole and the second through hole according to specific operating conditions, and the description thereof is omitted.
It is understood that, in some other embodiments, the end cap may also be in any shape, and the end portion of the sleeve may also be provided with a plurality of buckles, and the end cap is fixedly connected with the sleeve by the buckles as long as there is a baffle structure with a wire guide hole for abutting the stop sleeve, and the specific matching structure of the end cap and the end portion of the sleeve may also be in other manners, which are not described herein again.
In this embodiment, the baffle is fixed on the outer end surface of the hexagon nut, the threaded hole is completely covered, and the wire passes through only the through hole on the baffle.
It can be understood that in other embodiments, the baffle can be directly embedded and fixed in the threaded hole of the hexagon nut at a position close to the outer end face of the threaded hole, the baffle embedded in the threaded hole completely covers the threaded hole, and the conducting wire can only pass through the through hole in the baffle.
It can be understood that, in some other embodiments, the baffle plate may only cover the portion of the threaded hole, as long as it can be ensured that the baffle plate abuts against the stop sleeve in the sleeve, the stop sleeve may be disposed along a circle of the threaded hole, or may be disposed and fixed in a half area of the threaded hole.
Example 2:
the embodiment 2 of the present disclosure provides a non-crimping connection method for a wire, which uses the hardware provided in the embodiment 1, and includes the following steps:
firstly, the hardware fitting described in embodiment 1 is installed, and two compression end covers 4 (fig. 11) are sleeved into two ends of a wire to be connected respectively;
then, the four wedge-shaped locking pieces 1 (shown in figure 6) are fastened on the two end leads in pairs, the big ends of the two wedge-shaped locking pieces on the same end lead face the connection end face and are aligned, and the wedge-shaped locking pieces 1 are tightly attached to the leads, so that the hardware fitting and the leads have good holding power and conductivity;
then two stop sleeves 2 (figure 7) are respectively sleeved on the wedge-shaped locking pieces 1 at the two ends according to the matching relationship;
finally, guiding the stop sleeves 2 at the two ends into the sleeve 3 (shown in figure 10) according to the guide rail, and tightly pressing the end covers 4 at the two ends to be locked with the sleeve 3 through threads;
and then, a hammer is used for nailing the pin into the through hole on the compression end cover, so that the thread is damaged, and the screw is prevented from loosening.
When the wires at the two ends are stressed to move in the opposite directions, the wedge-shaped structures and the clamping groove structures of the wedge-shaped locking parts 1 and the stop sleeve 2 realize mechanical self-locking.
Example 3:
as shown in fig. 1, 6, 7, 8 and 9, embodiment 3 of the present disclosure provides a non-crimping splicing fitting for wire connection, including a wedge-shaped locking member 1, a stop sleeve 2, a sleeve 3, and a compression end cap 4;
the wedge-shaped locking part is composed of two identical structures, and the inner wall of the wedge-shaped locking part is a spiral groove with the same texture as the conducting wire, so that the conducting wire can be completely wrapped.
It can be understood that, in other embodiments, the wedge-shaped locking member may have other shapes, such as a circular truncated cone shape or a trapezoidal truncated cone shape, as long as it can ensure that the sectional area of the portion extending into the retaining sleeve 2 along the axis direction of the locking member is gradually reduced, that is, it is sufficient to achieve mechanical self-locking with the retaining sleeve 2 through the wedge-shaped structure and the slot structure of the wedge-shaped locking member 1, and a person skilled in the art may select a specific shape according to a specific working condition, and details are not described here.
It is understood that in other embodiments, the wedge-shaped locking member portion is composed of three, four or more structures that are identical, as long as the wedge-shaped locking member portion can be spliced into a whole and the whole structure and the inner and outer wall structures are ensured, and the details are not described herein.
It is understood that in other embodiments, the portions of the wedge-shaped locking member may not be identical, as long as they can be spliced into a whole and ensure the whole structure and the inner and outer wall structures, and thus, the description thereof is omitted.
In the embodiment, the wedge-shaped locking piece 1 is a truncated cone with a slideway on the outer wall, the axial force of a lead received by the outer wall of the truncated cone with the slideway can be converted into lateral force and axial force which are uniformly distributed and vertical to the side surface of the truncated cone, and mechanical self-locking can be realized under the reaction force of an external stop sleeve.
Specifically, 4 wedge-shaped slideways which are uniformly distributed are arranged on the truncated cone with the slideways, and under the condition of axial force, mechanical self-locking can be realized under the counter-acting force of the external stop sleeve 2.
The inner wall of the stop sleeve 2 is of a hollow structure which is embedded with the wedge-shaped locking piece 1, so that the wedge-shaped locking piece 1 can be effectively prevented from moving reversely and rotating.
The shape of the stop sleeve 2 is cylindrical, 8 guide rail structures which are uniformly distributed are arranged on the outer wall of the stop sleeve, and when the hardware fitting is assembled, the stop sleeve is led in from two ends of the sleeve 3 so as to ensure that the stop sleeve 2 and internal components do not integrally rotate in the sleeve 3.
It can be understood that, in some other embodiments, the stop sleeve may have other structures, such as a triangular prism structure, a quadrangular prism structure, a pentagonal prism structure, and so on, as long as it can be ensured that the inner wall of the stop sleeve is set to be a hollow structure engaged with the wedge-shaped locking member 1, and the outer wall is set to be a uniformly distributed conduit structure, and it can be guided in from both ends of the sleeve 3 and ensure that the stop sleeve 2 and the internal components do not rotate integrally in the sleeve 3, and those skilled in the art can design according to specific working conditions, and will not be described herein again.
As shown in fig. 10 and 11, the sleeve 3 is a cylindrical structure, and the inner wall of the sleeve is provided with a guide rail structure matched with the stop sleeve 2 to prevent the stop sleeve 2 and the internal components from integrally rotating in the sleeve 3. The outer walls at two ends of the clamp are provided with M60 standard fine threads for matching with the pressing end cover 4 to lock the whole hardware fitting.
As shown in fig. 12, the compression end cap 4 is a hexagon nut-like structure, the overall shape of the compression end cap is similar to that of a hexagon nut, and M60 standard fine threads matched with the sleeve 3 are arranged inside the compression end cap and can be in threaded connection with the sleeve 3.
One end of the pressing end cover 4 is provided with a baffle 5 for abutting against the inner structure of the hardware fitting, and the baffle is provided with a first circular through hole 7 which can enable a wire to pass through. The side surface of the sleeve is provided with a second through hole 6, and the screw thread of the sleeve 3 is damaged by the pin through the through hole on the side surface of the compression end cover 4 after the compression end cover 4 is screwed down during assembly, so that the self-locking performance of the screw thread is improved.
It is understood that, in other embodiments, the first through hole and the second through hole may also be in other shapes, such as square, rectangular, or trapezoidal, and the like, and those skilled in the art may design the first through hole and the second through hole according to specific operating conditions, and the description thereof is omitted.
In this embodiment, the baffle is fixed on the outer end surface of the hexagon nut, the threaded hole is completely covered, and the wire passes through only the through hole on the baffle.
It can be understood that in other embodiments, the baffle can be directly embedded and fixed in the threaded hole of the hexagon nut at a position close to the outer end face of the threaded hole, the baffle embedded in the threaded hole completely covers the threaded hole, and the conducting wire can only pass through the through hole in the baffle.
It can be understood that, in some other embodiments, the baffle plate may only cover the portion of the threaded hole, as long as it can be ensured that the baffle plate abuts against the stop sleeve in the sleeve, the stop sleeve may be disposed along a circle of the threaded hole, or may be disposed and fixed in a half area of the threaded hole.
Example 4:
the embodiment 4 of the present disclosure provides a non-crimping connection method for a wire, which uses the hardware provided in the embodiment 3, and includes the following steps:
firstly, the hardware fitting described in embodiment 3 is installed, and two compression end covers 4 (shown in fig. 11) are sleeved into two ends of a wire to be connected respectively;
then, two by two four wedge-shaped locking pieces 1 (shown in figure 8) are tightly buckled on the two end leads, the big ends of the two wedge-shaped locking pieces on the same end lead face the connection end face and are aligned, and the wedge-shaped locking pieces 1 are tightly attached to the leads, so that the hardware fitting and the leads have good holding power and conductivity;
then two stop sleeves 2 (figure 9) are respectively sleeved on the wedge-shaped locking pieces 1 at the two ends according to the matching relationship;
finally, guiding the stop sleeves 2 at two ends into a sleeve 3 (shown in figure 10) according to a guide rail, and tightly pressing the end covers 4 at two ends and the sleeve 3 through threads;
and then, a hammer is used for nailing the pin into the through hole on the compression end cover, so that the thread is damaged, and the screw is prevented from loosening.
When the wires at the two ends are stressed to move in the opposite directions, the wedge-shaped structures and the clamping groove structures of the wedge-shaped locking parts 1 and the stop sleeve 2 realize mechanical self-locking.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (7)
1. A non-crimping splicing fitting for wire connection is characterized by comprising a locking piece, a first pipe fitting, an end cover and a second pipe fitting, wherein the locking piece is hollow, two ends of the locking piece are open, and the second pipe fitting is used for being inserted into the first pipe fitting;
the inner wall of the locking piece is a locking structure matched with the outer wall structure of the lead, and the outer wall of the locking piece is embedded with the inner wall of the second pipe fitting through the clamping structure;
the outer wall of the second pipe fitting is provided with a plurality of sliding rails along the axial direction of the second pipe fitting, and the inner wall of the first pipe fitting is provided with a guide rail matched with the sliding rails of the second pipe fitting;
two ends of the first pipe fitting are respectively fixed with an end cover, and the end covers are provided with baffle plates with wire holes for propping against the second pipe fitting; the cross section area of the part of the locking piece, which penetrates into the second pipe fitting, is gradually reduced along the axial direction of the locking piece towards the direction of the end cover matched with the locking piece;
the locking piece is of a cone frustum structure, the outer wall of the cone frustum structure is provided with a plurality of layers of steps which are arranged in a highly staggered mode, each layer of step is provided with a plurality of clamping grooves which are arranged in a staggered mode, and each layer of step is in a cone frustum shape;
the non-crimped connection of the wire comprises the following steps:
two end covers are respectively sleeved into two ends of a lead to be connected;
the locking piece is fixed at the end part of the lead and is tightly attached to the lead;
the two second pipe fittings are respectively sleeved on the two locking parts according to the matching relationship, and the second pipe fittings at the two ends are guided into the first pipe fitting according to the guide rail;
the end cover is locked with the first pipe fitting pipe through threads, and the baffle plate on the end cover is propped against the first pipe fitting.
2. The non-crimp splicing fitting for connecting wires according to claim 1, wherein the inner wall of the locking member is a spiral groove having the same texture as the wire; alternatively, the first and second liquid crystal display panels may be,
the outer wall at first pipe fitting both ends is equipped with the screw thread that is used for with end cover threaded connection, and the position of end cover screw hole is equipped with the baffle that is used for supporting the second pipe fitting, and it has the first through-hole that is used for the wire to pass through to open on the baffle.
3. A non-crimp splicing fitting for connection of conductors according to claim 1, wherein said locking member is formed by at least two discrete elements being snap-fitted.
4. The non-crimp splicing fitting for connecting a lead according to claim 1, wherein the second tube has a hollow cylindrical structure with two open ends, and a plurality of sliding rails are arranged on the outer wall of the second tube along the axial direction of the second tube.
5. The non-crimp splicing fitting for connecting a wire according to claim 4, wherein the first pipe fitting has a hollow cylindrical structure with two open ends, and a plurality of guide rails matched with the slide rails of the second pipe fitting are arranged on the inner wall of the first pipe fitting along the axial direction of the first pipe fitting.
6. The non-crimping splicing fitting for wire connection according to claim 1, wherein the end cap is of a nut structure, a baffle for abutting against the second pipe fitting is arranged on an outer end face of the nut, and a second through hole for screwing in a screw is formed in at least one side face of the nut.
7. The non-crimping splicing fitting for wire connection according to claim 1, wherein a pin is driven from a through hole reserved on at least one side surface of the end cap to break the thread structure of the first fitting.
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| CN202010872020.3A CN112072336B (en) | 2020-08-26 | 2020-08-26 | Non-crimping connection fitting and connection method for wire connection |
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| CN112072336B true CN112072336B (en) | 2022-09-30 |
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| CN110582894A (en) * | 2017-05-12 | 2019-12-17 | 格鲍尔格里勒电缆有限公司 | Contact system for contacting a shielding fabric with a contact element |
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