CN114566812B

CN114566812B - An easy-to-use terminal block

Info

Publication number: CN114566812B
Application number: CN202210306126.6A
Authority: CN
Inventors: 江雄; 王远国; 陈建万
Original assignee: Cixi Wanjie Electronic Co ltd
Current assignee: Cixi Wanjie Electronic Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2026-01-06
Anticipated expiration: 2042-03-25
Also published as: CN114566812A

Abstract

A wiring terminal convenient to operate comprises an insulating shell, a conductive piece, an elastic clamping piece, a driving guide wheel and an operating piece, wherein the insulating shell is provided with a containing cavity, the conductive piece is arranged in the containing cavity, at least part of the conductive piece extends out of the insulating shell, the elastic clamping piece is arranged in the containing cavity and is provided with a movable end and a fixed end, the driving guide wheel is rotatably arranged in the containing cavity, one end of the driving guide wheel is abutted with the movable end of the elastic clamping piece, the other end of the driving guide wheel is abutted with the fixed end of the elastic clamping piece, a transmission part is arranged on the driving guide wheel, the operating piece is sequentially provided with an operating end, a connecting end and a driving end, the operating end extends out of the insulating shell, and the connecting end is rotatably connected with the insulating shell. According to the invention, an embedding gap for penetrating/taking out a lead is formed between the elastic clamping piece and the conductive piece through the operation piece and the driving guide wheel without using external tools such as a screwdriver, so that the wiring action can be realized more quickly and easily, the operation difficulty is effectively reduced, and a large amount of time is saved.

Description

Binding post convenient to operation

Technical Field

The invention relates to the technical field of wiring terminals, in particular to a wiring terminal convenient to operate.

Background

The connection terminal is an accessory product for realizing electrical connection, and is industrially divided into the categories of connection terminals. As the degree of industrial automation becomes higher and the industrial control requirements become more stringent and precise, the amount of the terminal blocks used is gradually increased. With the development of the electronic industry, the use range of the wiring terminal is more and more, and the variety is also more and more. The existing wiring terminal is applied for facilitating connection of wires, and is actually a section of metal sheet sealed in insulating plastic, holes are formed in two ends of the metal sheet, wires can be inserted into the metal sheet, screws are used for fastening or loosening, for example, two wires are required to be connected and disconnected, and the wires can be connected by the terminal at any time and disconnected without welding or winding the wires together.

The type of one kind of binding post is, when needing to insert the outside wire in this kind of binding post during the use, and the user need press operating button, makes operating button open wire clamping joint to keep the clearance that supplies the wire to insert, after the wire inserts this clearance, the user releases the pressing force to operating button, just can clamp the wire that is located this clearance department with the help of the elasticity restoring force of wire clamping joint, and then realizes the electric connection of wire and electric contact element, accomplishes the wiring operation of this binding post.

The conventional use mode of the above-mentioned binding post is, referring to fig. 4, an elastic member inside is pushed open by a tool such as a screwdriver through an operation hole to make a gap for inserting a wire, the screwdriver is taken out after insertion, and the elastic member automatically resets to compress the wire. Or referring to fig. 5, the screw is unscrewed by a screwdriver, the housing is disassembled, and then wiring is performed. The defects of the mode are obvious, for example, the operation of plugging and unplugging wires can not be performed without tools by means of tools, and the operation is unstable, so that the parts such as the inner elastic piece, the shell and the like are easily damaged, and the service life of the product is reduced.

In another type of connection terminal, the push rod is of an integral structure. When the push rod is rotated to unlock the elastic sheet to relax and return, the impact of the elastic force of the elastic part, which is instantly and rapidly rebounded, on the push rod is not considered. When the impact encountered by the push rod is large, the operating end of the push rod can cause injury to operators.

Therefore, improvement of the existing wiring terminal structure is urgently needed to facilitate the plugging operation of the cable for the user without using tools.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the wiring terminal which is convenient to operate.

The technical scheme for solving the technical problems is that the wiring terminal convenient to operate comprises:

The insulating shell is provided with a wire inserting hole and a terminal hole, and an accommodating cavity communicated with the wire inserting hole and the terminal hole is formed in the insulating shell;

the conductive piece is arranged in the accommodating cavity and at least partially extends out of the insulating shell through the terminal hole;

the elastic clamping piece is arranged in the accommodating cavity and is provided with a movable end and a fixed end, the movable end is used for pressing a wire which enters the accommodating cavity from the wire inserting hole on the conductive piece, and the fixed end is always contacted with the conductive piece;

The driving guide wheel is rotatably arranged in the accommodating cavity, one end of the driving guide wheel is abutted against the movable end of the elastic clamping piece, the other end of the driving guide wheel is abutted against the fixed end of the elastic clamping piece, and the driving guide wheel is provided with a transmission part;

The operation piece, it has operation end, link and drive end from front to back in proper order, the operation end stretch out to outside the insulating casing, the link with the insulating casing form and rotate and be connected, the drive end can stretch into and hold the chamber and with the drive portion butt of driving guide pulley to impel the driving guide pulley to rotate, the driving guide pulley acts on the expansion end of elasticity clip piece and makes it warp, and then forms the clearance of putting into that supplies the wire to penetrate between expansion end after the deformation and the electrically conductive piece.

The technical scheme is that the driving guide wheel comprises a semi-annular main body and a transmission part convexly arranged on the semi-annular main body, a circular groove is further formed in the accommodating cavity, a centering column is arranged in the circular groove, and the semi-annular main body is arranged in the circular groove and can rotate around the centering column.

The technical scheme is further that the operating piece is provided with a containing groove, and the transmission part can be inserted into the containing groove.

The technical scheme is further characterized in that limiting blocking walls are arranged on two sides of the accommodating groove, and the transmission part is contacted with the limiting blocking walls to limit the longitudinal deflection of the operating piece.

The elastic clamping piece further comprises a semi-annular base body, the movable end is formed by outwards extending one end portion of the semi-annular base body, the movable end always has an elastic movement trend close to the conductive piece, the fixed end is formed by outwards extending the other end portion of the semi-annular base body, and the fixed end always abuts against the cavity wall of the accommodating cavity.

The technical scheme is further characterized in that the inner wall of the accommodating cavity is further provided with a limiting blocking rib, and the limiting blocking rib can be abutted with the movable end of the elastic clamping piece to limit the movable end to further displace.

The technical scheme is further that the connecting end of the operating piece is a rotating shaft, the insulating shell is provided with a rotating hole, and the rotating shaft is inserted into the rotating hole.

The technical scheme is further characterized in that the size of the rotating shaft is larger than that of the rotating shaft, and a transverse movement gap is formed.

The technical scheme is further characterized in that the driving end of the operating piece is in a hook shape, the hook-shaped driving end is provided with a first guide surface and a second guide surface, when the operating piece is lifted upwards, the first guide surface is contacted with the transmission part of the driving guide wheel to drive the driving guide wheel to rotate, and when the driving guide wheel rotates for a certain angle, the second guide surface is contacted with the transmission part of the driving guide wheel to drive the driving guide wheel to further rotate.

The insulating shell comprises a main shell and a side sealing plate, wherein the main shell is provided with a closed side and an open side, and the open side and the side sealing plate or the closed side of the other main shell are spliced together to form the accommodating cavity.

When a wire needs to be plugged, a user lifts the upper-lifting end of the operating piece upwards to enable the whole operating piece to rotate by taking the connecting end as a rotation center, so that the driving end at the opposite position of the upper-lifting end correspondingly rotates, the driving end can extend into the accommodating cavity and is abutted with the transmission part of the driving guide wheel, the driving guide wheel is driven to rotate, the driving guide wheel acts on the movable end of the elastic clamping piece and deforms the movable end, a wire penetrating gap is formed between the deformed movable end and the conductive piece, the wire can be plugged in or the original fixed wire can be released and taken out, finally the user releases the operating piece, and the elastic clamping piece is restored to the initial position state under the action of own elastic force, and simultaneously drives the driving guide wheel and the operating piece to be reset together.

The invention has the beneficial effects that:

1. Through the improvement optimization to the structure, need not to resort to external tools such as screwdriver, adopt lever principle, can make between elasticity clip piece and the electrically conductive piece form the imbedding clearance that supplies the wire to penetrate/take out through operating piece and driving guide wheel to realize more quick, light the wiring action of getting, effectively reduce the operation degree of difficulty and save a large amount of time when connecting and releasing the wire.

2. The structure of the driving guide wheel and the structure of the operation piece are optimized, particularly the structure characteristics of double semi-rings (semi-ring main body and semi-ring base body) are adopted, so that the motion condition of the driving guide wheel and the elastic clamping piece is kept consistent, a stable and invariable contact surface is always arranged between the driving guide wheel and the elastic clamping piece at any node in the rotation process, the stress consistency of all parts in the opening and closing process is further ensured, the structure of the elastic clamping piece is also provided with more stable handfeel, on the other hand, the stress of the driving guide wheel and the elastic clamping piece is more uniform, the fatigue of a product of the structure of the elastic clamping piece is further improved, the loosening phenomenon is avoided after the elastic clamping piece is used for a long time, the good matching degree is still kept, and the use effect is better.

Drawings

Fig. 1 is a schematic view of the internal structure of a terminal according to the present invention.

FIG. 2 is a schematic view of the internal structure of the operating member of the present invention without lifting.

FIG. 3 is a schematic view of the internal structure of the present invention when the operating member is lifted.

Fig. 4 is a schematic diagram of the internal structure of the prior art.

Fig. 5 is a schematic view of the appearance structure of the prior art.

The device comprises a insulating shell, a2, a wire inserting hole, a3, a terminal hole, a 4, a containing cavity, a 5, a conductive part, a 6, an elastic clamping part, a 7, a movable end, a 8, a fixed end, a 9, a driving guide wheel, a 10, a transmission part, a 11, an operating part, a 12, an operating end, a 13, a connecting end, a 14, a driving end, a 15, a semi-annular main body, a 16, a circular groove, a 17, a centering column, a 18, a semi-annular main body, a 19, a containing groove, a 20, a limiting blocking wall, a 21, a limiting blocking rib, a 22, a rotating shaft, a 23, a rotating hole, a 24, a transverse movement gap, a 25, a first guide surface, a 26, a second guide surface, a 27, a main shell, a 28, a side sealing plate and a 29, and a screwdriver.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 3, a connection terminal convenient to operate includes:

The insulation shell 1 is provided with a wire inserting hole 2 and a terminal hole 3, a containing cavity 4 communicated with the wire inserting hole 2 and the terminal hole 3 is arranged in the insulation shell 1, a conducting piece 5 is arranged in the containing cavity 4, the conducting piece 5 at least partially extends out of the insulation shell 1 through the terminal hole 3, an elastic clamping piece 6 is arranged in the containing cavity 4 and is provided with a movable end 7 and a fixed end 8, the movable end 7 is used for pressing wires entering the containing cavity 4 from the wire inserting hole 2 onto the conducting piece 5, the fixed end 8 is always contacted with the conducting piece 5, a driving guide wheel 9 is rotatably arranged in the containing cavity 4, one end of the driving guide wheel 9 is abutted with the movable end 7 of the elastic clamping piece 6, the other end of the driving guide wheel is abutted with the fixed end 8 of the elastic clamping piece 6, a transmission part 10 is arranged on the driving guide wheel 9, the operation piece 11 sequentially comprises an operation end 12, a connection end 13 and a driving end 14 from front to back, the operation end 12 extends out of the insulation shell 1, and the connection end 13 is connected with the insulation shell 1 in a rotating mode.

The above-mentioned content is the basic scheme of the invention, wherein the operating member 11 adopts the lever type structural principle, when the wire needs to be plugged, the user lifts the upper-picking end of the operating member 11 upwards to enable the whole operating member 11 to rotate by taking the connecting end 13 as the rotation center, therefore, the driving end 14 at the opposite position of the upper-picking end correspondingly rotates, the driving end 14 can extend into the accommodating cavity 4 and is abutted with the transmission part 10 of the driving guide wheel 9, thereby driving the driving guide wheel 9 to rotate, the driving guide wheel 9 acts on the movable end 7 of the elastic clamping member 6 and deforms the movable end 7, a wire-penetrating imbedding gap is formed between the deformed movable end 7 and the conductive member 5, the wire can be plugged in or the original fixed wire can be released and taken out, finally, the user releases the operating member 11, and the elastic clamping member 6 is restored to the initial position state under the action of the own elastic force, and simultaneously drives the driving guide wheel 9 and the operating member 11 to be restored together.

In the existing similar products, for example, in the patent of ZL2021114973529, the part used as transition transmission is a transmission slide block, the operation piece 11 is in a rotating state when in use, the transmission slide block is in a straight up and down moving state, and the elastic clamping piece 6 is in a single-side (movable end 7) rotating state, so that the contact modes of the transmission slide block and the operation piece 11 at each position are more or less different, and specific consequences are at least that when the operation piece 11 is switched from closed to open, the contact quantity of the initial section and the transmission slide block is large, so that the resistance is larger, the hand feeling is harder, sometimes even the clamping cannot be opened, the contact quantity of the rear section and the transmission slide block is smaller, so that the resistance is smaller, and the hand feeling is lighter. 2. Due to the fact that the stress of the transmission sliding block is uneven, and further the fatigue of the product with the structure is poor, the phenomenon of loosening can occur after long-time use, the matching is not accurate enough, and the use effect is greatly reduced.

In order to solve the above-mentioned drawbacks of the conventional products, and to achieve reliable and stable hand feeling during opening and closing, the structure of the driving wheel 9 and the elastic clip member 6 is preferably, as a special limitation, a transmission portion 10 protruding from the semi-annular body 15, and a circular groove 16 is further provided in the accommodating chamber 4, and a centering post 17 is provided in the circular groove 16, and the semi-annular body 15 is mounted in the circular groove 16 and can rotate around the centering post 17. The elastic clamping piece 6 comprises a semi-annular base body 18, the movable end 7 is formed by outwards extending one end part of the semi-annular base body 18, the movable end 7 always has an elastic movement trend close to the conductive piece 5, the fixed end 8 is formed by outwards extending the other end part of the semi-annular base body 18, and the fixed end 8 always abuts against the cavity wall of the accommodating cavity 4. The semi-annular base 18 always abuts against the semi-annular body 15. The double-semi-annular structure is adopted, so that the motion conditions of the driving guide wheel 9 and the elastic clamping piece 6 are kept consistent, a stable and unchanged contact surface is formed between the driving guide wheel 9 and the elastic clamping piece 6 at any node in the rotation process, the consistency of stress of all parts in the opening and closing process is further ensured, the handle is more stable, on the other hand, the stress of the driving guide wheel 9 and the elastic clamping piece 6 is more uniform, the fatigue of a product of the structure of the device is improved, the loosening phenomenon is avoided after long-time use, good matching degree is still kept, and the use effect is better.

In order to make the transmission between the operating element 11 and the driving guide wheel 9 more stable, a preferred solution is provided herein, specifically, the operating element 11 is provided with a receiving groove 19, and the transmission part 10 can be inserted into the receiving groove 19. Meanwhile, the two sides of the accommodating groove 19 are provided with limiting blocking walls 20, and the transmission part 10 is contacted with the limiting blocking walls 20 to limit the longitudinal deflection of the operating member 11 and ensure good contact and power transmission effects between the transmission part 10 and the operating member 11 all the time.

If the structure of the movable end 7 is not specially designed, the movable end 7 has the defects that after repeated use and deformation, the movable end 7 is tired, or when the external force instantaneously applied to the elastic clamping piece 6 is overlarge, the elastic clamping piece 6 can be excessively deformed or displaced, and can not be reset in place after the external force is released, so that the pressing force of the movable end 7 on a wire is reduced, and the situation of loose and poor contact is easy to occur. In order to ensure that the movement of the elastic clamping member 6 is more regular and stable, the embodiment adopts a mode that the inner wall of the accommodating cavity 4 is also provided with a limiting blocking rib 21, and the limiting blocking rib 21 can be abutted with the movable end 7 of the elastic clamping member 6 so as to limit the movable end 7 to further displace.

In the invention, the rotating structure between the operating element 11 and the insulating shell 1 is that the connecting end 13 of the operating element 11 is a rotating shaft 22, the insulating shell 1 is provided with a rotating hole 23, and the rotating shaft 22 is inserted into the rotating hole 23. Because the operating member 11 adopts a rotary opening and closing manner, if the connection between the connecting end 13 and the insulating housing 1 adopts clearance fit, interference and blocking are easy to occur in the use process, so that the force transmission is not smooth, and the operating member 11 cannot be opened or closed smoothly.

In order to eliminate the possible rotation defect of the operating member 11 when it is opened and closed, the size of the rotation hole 23 is larger than that of the rotation shaft 22, and a lateral movement gap 24 is formed. When in use, once the movement is blocked, a user can transversely pull the operation piece 11, so that the contact position between the driving end 14 on the operation piece 11 and the transmission part 10 of the driving guide wheel 9 is changed, and the operation piece 11 is rotated at the moment, so that the operation piece can be smoothly used.

In order to make the mutual cooperation between the operating member 11 and the driving guide wheel 9 smoother and more stable, so as to ensure that the two have enough contact amount all the time, the driving end 14 of the operating member 11 is in a hook shape, the hook-shaped driving end 14 is provided with a first guiding surface 25 and a second guiding surface 26, when the operating member 11 is lifted upwards, the first guiding surface 25 is firstly contacted with the transmission part 10 of the driving guide wheel 9 to drive the driving guide wheel 9 to rotate, and when the driving guide wheel 9 rotates for a certain angle, the second guiding surface 26 is contacted with the transmission part 10 of the driving guide wheel 9 to drive the driving guide wheel 9 to further rotate.

The terminal is often used in a plurality of side-by-side manner to connect/disconnect more circuits, so that a special structure of the insulating housing 1 is also provided in this embodiment, which can realize any number of spliced combinations to meet the use requirements of different users, specifically, the insulating housing 1 includes a main housing 27 and a side sealing plate 28, the main housing 27 has a closed side and an open side, and the open side is spliced with the closed side of the side sealing plate 28 or another main housing 27 to form the accommodating cavity 4.

The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes of the above embodiment according to the technical matter of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A terminal convenient to operate, comprising:

the insulation shell (1) is provided with a wire inserting hole (2) and a terminal hole (3), and an accommodating cavity (4) communicated with the wire inserting hole (2) and the terminal hole (3) is formed in the insulation shell (1);

A conductive member (5) disposed in the accommodation chamber (4), and the conductive member (5) extends at least partially out of the insulating housing (1) through the terminal hole (3);

the elastic clamping piece (6) is arranged in the accommodating cavity (4) and is provided with a movable end (7), a fixed end (8) and a semi-annular matrix (18) positioned between the movable end (7) and the fixed end (8), the movable end (7) is used for pressing a wire entering the accommodating cavity (4) from the wire inserting hole (2) onto the conductive piece (5), the fixed end (8) is always contacted with the conductive piece (5), and the fixed end (8) is always abutted against the cavity wall of the accommodating cavity (4);

The driving guide wheel (9) is rotatably arranged in the accommodating cavity (4), one end of the driving guide wheel (9) is abutted with the movable end (7) of the elastic clamping piece (6), the other end of the driving guide wheel is abutted with the fixed end (8) of the elastic clamping piece (6), and the driving guide wheel (9) is provided with a transmission part (10);

The operation piece (11) is sequentially provided with an operation end (12), a connection end (13) and a driving end (14) from front to back, the operation end (12) extends out of the insulation shell (1), the connection end (13) is in rotary connection with the insulation shell (1), the driving end (14) can extend into the accommodating cavity (4) and is abutted with the transmission part (10) of the driving guide wheel (9), so that the driving guide wheel (9) is driven to rotate, the driving guide wheel (9) acts on the movable end (7) of the elastic clamping piece (6) and deforms the movable end, and a placement gap for a wire to penetrate is formed between the deformed movable end (7) and the conductive piece (5);

the driving guide wheel (9) comprises a semi-annular main body (15) and a transmission part (10) convexly arranged on the semi-annular main body (15), the accommodating cavity (4) is also provided with a circular groove (16), the circular groove (16) is internally provided with a centering column (17), the semi-annular main body (15) is arranged in the circular groove (16) and can rotate by taking the centering column (17) as a center, and a stable and invariable arc contact surface is always arranged between the semi-annular main body (15) and the semi-annular base body (18) at any node in the rotation process;

The operating part (11) is provided with a containing groove (19), and the transmission part (10) can be inserted into the containing groove (19).

2. The connection terminal convenient to operate according to claim 1, wherein limiting blocking walls (20) are arranged on two sides of the accommodating groove (19), and the transmission part (10) is contacted with the limiting blocking walls (20) so as to limit the longitudinal deflection of the operating piece (11).

3. The connection terminal convenient to operate according to claim 1, wherein the inner wall of the accommodating cavity (4) is further provided with a limiting blocking rib (21), and the limiting blocking rib (21) can be abutted with the movable end (7) of the elastic clamping piece (6) so as to limit the movable end (7) to further displace.

4. The connection terminal convenient to operate according to claim 1, wherein the connection end (13) of the operating member (11) is a rotating shaft (22), a rotating hole (23) is formed in the insulating housing (1), and the rotating shaft (22) is inserted into the rotating hole (23).

5. The connection terminal for easy operation according to claim 4, wherein the size of the rotating hole (23) is larger than the size of the rotating shaft (22) and a lateral movement gap (24) is formed.

6. The connection terminal according to claim 1, wherein the driving end (14) of the operating member (11) is hooked, and the hooked driving end (14) has a first guiding surface (25) and a second guiding surface (26), when the operating member (11) is lifted upwards, the first guiding surface (25) is firstly contacted with the transmission part (10) of the driving guide wheel (9) to drive the driving guide wheel (9) to rotate, and when the driving guide wheel (9) rotates by a certain angle, the second guiding surface (26) is contacted with the transmission part (10) of the driving guide wheel (9) to drive the driving guide wheel (9) to further rotate.

7. The connection terminal according to claim 1, wherein the insulating housing (1) comprises a main housing (27) and a side sealing plate (28), the main housing (27) having a closed side and an open side, the open side being assembled with the closed side of the side sealing plate (28) or another main housing (27) and forming the receiving chamber (4).