CN213401052U - Rotary extrusion wiring terminal - Google Patents

Abstract

The utility model discloses a rotate and extrude binding post has and compresses tightly piece and operating parts, drives through operating parts and compresses tightly that the piece rotates and makes the metal body that inserts in binding post from the control end place terminal surface of operating parts compress tightly, operating parts is last to have the screw thread, drives through the screw thread compress tightly the piece and form the effect that compresses tightly to the metal body in binding post internal rotation. The utility model discloses an inside integral type that is equipped with compresses tightly a structure and rotates and compress tightly to have better stability, avoid the slip restriction of slip extrusion and plug-in structure simultaneously, form the more direct effect that compresses tightly.

Description

Rotary extrusion wiring terminal

Technical Field

The utility model belongs to the technical field of electronic connector, concretely relates to line ball terminal.

Background

The terminal is an accessory product for realizing electrical connection, and is industrially classified into the category of connectors. With higher and higher industrial automation degree and stricter and more accurate industrial control requirements, the use amount of the wiring terminal gradually increases. With the development of the electronic industry, the use range of the connecting terminal is more and more, and the types of the connecting terminal are more and more. The most widely used terminals include hardware terminals, nut terminals, spring terminals, etc., in addition to PCB terminals. Generally, a conventional terminal is used for facilitating connection of wires, and it is a metal sheet enclosed in an insulating plastic, and both ends of the metal sheet have holes for inserting the wires, and screws are used for fastening or loosening, such as two wires, which need to be connected and disconnected at times, and then they can be connected by terminals and disconnected at any time, without welding or winding them together, which is convenient and fast. The novel power cable is suitable for interconnection of a large number of wires, and has special terminal blocks and terminal boxes in the power industry, wherein the terminal blocks are all single-layer, double-layer, current, voltage, common and breakable. The crimping area is designed to ensure reliable contact and to ensure that sufficient current can pass.

In many existing communication equipment cabinets, circuit breakers and other electrical protection equipment are installed in a bus-bar plug wire mode, so that cables are inserted from a direction perpendicular to the circuit breakers in order to conveniently plug flat cables, and wire inlets of the cables can only be arranged on exposed end faces. And can adopt the baffle to shelter from around circuit protection equipment such as circuit breaker in the rack, cause it to have only an terminal surface to expose after the installation. The existing wiring terminal cannot be suitable for the installation requirements, and the problem that a wiring structure with a wire inlet end and a control end which are coplanar is lacked in the prior art is urgently needed to be solved. Moreover, through when sliding or plug-in structure can't provide lasting and better side direction extrusion effect to syntropy male metalwork, set up and probably loosen gradually along with external force removes after fixed to the condition of short circuit appears.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the utility model provides a wiring terminal compresses tightly a structure through the rotation of inside formation and fixes male metal body, controls through homonymy male operation piece and the transmission that compresses tightly simultaneously to reach better fixed effect.

The utility model discloses the technical scheme who adopts does:

in a first aspect, a rotary extrusion wiring terminal has a pressing member and an operating member, the pressing member is driven by the operating member to rotate so that a metal body inserted into the wiring terminal from an end surface where a control end of the operating member is located is pressed,

the operating part is provided with threads, and the pressing part is driven to rotate in the wiring terminal through the threads to form a pressing effect on the metal body.

It is worth explaining that, the binding post in the utility model can be generally set up in multiple consumer or electrical protection equipment for insert and fix outside cable in binding post, be connected with the metalwork contact of outside cable by the conductor that sets up in the plug wire terminal. After the external cable metal part is inserted into the wiring terminal, the external cable metal part needs to be extruded from the side surface to abut against the wiring terminal for fixing, and the mode is simple, efficient and good in stability. The pressing member of the conventional terminal is a bolt structure having an operating end and an axis perpendicular to the insertion direction of the metal member. However, in the prior art, only an opening is left for exposing the plug wire port according to the installation requirement and the consistency requirement of the panel, and if a conventional wiring terminal structure is adopted, the conventional wiring terminal structure cannot be suitable for the installation requirement.

Then in order to realize syntropy operation and side direction extrusion simultaneously, the utility model provides a binding post independently is provided with special piece that compresses tightly, should compress tightly the piece and can be at binding post internal rotation, then can receive syntropy operation's operating part's action force rear side direction rotation oppression, and transmission department then drives by the screw thread part of operating the piece and realizes the transmission and connect.

The thread part is an external thread structure of the operating piece, and the thread is changed by directionally rotating the operating piece, so that the corresponding structure on the pressing piece is pushed in the direction of the rotating axis of the operating piece. The pushing force is converted by the rotation of the operating part, so that the transmission ratio is high and the self-locking performance is realized.

The transmission ratio here means that a force of a newton is applied to the operating member to rotate the pressing member, and the pressing force applied to the metal member inserted into the terminal is greater than a newton (although the rotating direction of the pressing member is a component of the applied force, a general transmission ratio is greater than 2, and the component is not less than 50% of the original force, which is greater than the original applied force in value). The self-locking property means that when the lead angle of the operating piece is smaller than the equivalent friction angle between the thread meshes, the mechanism has self-locking property, and can realize reverse self-locking, namely, only the operating piece can drive the pressing piece, but not the pressing piece can drive the operating piece to move.

In combination with the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, the pressing member has an arc surface parallel to an action track of the pressing member, and the arc surface is provided with an engaging structure in threaded fit with the operating member.

It is worth to be noted that, in the prior art, a sliding pressing member structure exists, and the movement along the rotating axis direction of the operating member can be realized through the driving of the screw thread, so that the gap between the operating member and the metal member is reduced continuously, and the extrusion fixing effect is realized. However, due to the lateral sliding compression, the sliding member has a large sliding resistance once the pressing force exceeds a certain value. If the clearance between the slider and the sliding connection structure is too large, the slider may be inclined to a certain degree by a reaction force against the pressing force, and in this case, the pressing force cannot be increased further, and the internal structure may be damaged.

And the sliding part needs to have certain requirements on assembly process and materials, meets the requirement that the pressing force cost is high, and has better stability and lower process requirements by replacing a sliding extrusion mode with direct rotating compression joint.

It is still worth explaining, the utility model provides a compress tightly the piece for rotating compact structure, generally set up to carry out circular rotation around a certain centre of a circle, its orbit is the standard circular arc (the so-called standard is only ideal model, actually need not to consider other factors when just expounding the principle owing to the unable standard circle of realization of assembly process restriction). At this time, in order to ensure that the pressing piece can keep good transmission connection stability with the operating piece when rotating, one side close to the operating piece is set to be an arc surface and forms a concentric circle with a rotating track, and then a certain contact area between the meshing structure and the thread can be ensured to be always kept. However, in practical products, the rotation mode of the pressing piece includes irregular rotation, the motion track of the pressing piece is similar to an ellipse or other non-circular curves, and the parallel direction means that the arc-shaped surface can be parallel to the track when the pressing piece moves, and a certain amount of contact area is also kept between the meshing structure and the threads.

With reference to the first possible implementation manner of the first aspect, embodiments of the present invention provide a second possible implementation manner of the first aspect, and the engaging structure is a protruding toothed belt.

With reference to the first possible implementation manner of the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the engaging structure is a plurality of inward recessed grooves or through holes.

It is worth mentioning that the toothed belt is formed by a plurality of protruding rack structures, whereas the so-called grooves or through holes are formed by a plurality of recessed structures in the arc-shaped surface, and the spacing between the recessed structures is equal to the pitch of the threads. And part of the screw threads extend into the concave structure to form the matching with the pressing piece, and the pushing principle of the screw threads is the same as that of the protruding toothed belt structure, but the screw threads belong to different implementation modes.

In combination with the second possible implementation manner of the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, the pressing member further includes a pressing end, and a force arm from the pressing end to a rotation point of the pressing member is not less than a length of a force arm from the engaging structure to the rotation point.

It is worth to be noted that, as the rotary pressing structure is adopted and the fixed rotating point is provided, a lever structure is formed, and the pressing force is further improved by increasing the force arm.

With reference to the fourth possible implementation manner of the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, and the connection terminal further includes a housing, where a plug port is provided on the housing; the operating part is limited in the shell, and an opening for exposing the operating end of the operating part is arranged on the same side of the wire inserting port on the shell.

With reference to the fifth possible implementation manner of the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where the operating part is a screw structure, an operating end of the operating part is a nut, and the nut penetrates through the housing.

Combine the fifth possible implementation mode of first aspect, the embodiment of the utility model provides a seventh possible implementation mode of first aspect, be equipped with the pivot in the shell, compress tightly the cover and establish and rotate in the pivot.

The utility model has the advantages that:

(1) the wiring terminal structure of the utility model can be arranged in various electric equipment or protective equipment for connecting external cables, and aiming at special panel requirements, the plug wire port of the wiring terminal and the operation end of the pressing piece are both arranged on the same side surface, so that the whole extension socket can be conveniently arranged, and wiring and control are facilitated;

(2) the utility model discloses an inside integral type that is equipped with compresses tightly a structure and rotates and compress tightly to have better stability, avoid the slip restriction of slip extrusion and plug-in structure simultaneously, form the more direct effect that compresses tightly.

Drawings

Fig. 1 is a schematic front view of embodiment 2 of the present invention;

fig. 2 is a schematic side view of embodiment 2 of the present invention;

figure 3 is a schematic cross-sectional view of figure 2 taken along section line a-a of the present invention;

fig. 4 is a plan view of embodiment 2 of the present invention;

fig. 5 is a schematic axial view in embodiment 2 of the present invention;

fig. 6 is a schematic plan view of the inside of the case of embodiment 2 of the present invention after the case is cut;

fig. 7 is a schematic axial view of the embodiment 2 of the present invention after the outer shell is cut.

In the figure: 1-operating part, 1.1-thread, 1.2-rod part, 2-shell, 3-rotating shaft, 4-pressing part, 4.1-pressing end, 4.2-toothed belt, 4.3-rotating part, 5-plug wire port and 6-metal body.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Furthermore, the appearances of the terms "first," "second," and the like in the description herein are only used for distinguishing between similar elements and are not intended to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present application do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example 1:

in this embodiment, disclose a binding post, use in the circuit breaker, insert outside cable and contact with the conductor in the circuit breaker, it is fixed with it through the terminal of this embodiment, realizes stabilizing the connection effect.

Specifically, the wiring terminal comprises a pressing piece 4 and an operating piece, wherein the operating piece 1 drives the pressing piece 4 to rotate, so that a metal body 6 inserted into the wiring terminal from the end face of the control end of the operating piece 1 is pressed, the operating piece 1 is provided with an external thread 1.1 structure, and the thread 1.1 is changed by directionally rotating the operating piece 1, so that a corresponding structure on the pressing piece 4 is pushed in the direction of the rotating axis of the operating piece 1. The pushing force is converted from the rotation of the operating part 1 per se, so that the wire connecting terminal has a large transmission ratio and self-locking performance, and the pressing part 4 is driven to rotate in the wire connecting terminal through the threads 1.1 to form a pressing effect on the metal body 6.

The pressing member 4 is of a bolt structure, and has an operating end, and the axis is perpendicular to the insertion direction of the metal member. However, in the prior art, only an opening is left for exposing the plug wire port 5 according to the installation requirement and the consistency requirement of the panel, and if a conventional terminal structure is adopted, the terminal structure cannot be suitable for the installation requirement. In order to realize the equidirectional operation and the lateral extrusion simultaneously, the wiring terminal in the embodiment is independently provided with a special pressing piece 4, the pressing piece 4 can rotate in the wiring terminal and can be pressed in a lateral rotation mode after receiving the action force of the operating piece 1 operated in the same direction, and the transmission part is driven by the thread 1.1 part of the operating piece 1 to realize transmission connection.

Since the prior art has a lateral sliding compression scheme, the sliding part has a large sliding resistance once the compression force exceeds a certain value. If the clearance between the slider and the sliding connection structure is too large, the slider may be inclined to a certain degree by a reaction force against the pressing force, and in this case, the pressing force cannot be increased further, and the internal structure may be damaged.

The pressing member 4 is a rotary pressing structure and is provided with an arc-shaped surface on a side facing the operating member 1. The pressing piece 4 rotates circularly around a certain circle center, and the track of the pressing piece is a standard circular arc. At this time, in order to ensure that the pressing member 4 can maintain good transmission connection stability with the operating member 1 during rotation, one side close to the operating member 1 is set to be an arc surface, and forms a concentric circle with a rotating track, so that a certain contact area between the meshing structure and the thread 1.1 can be ensured to be always maintained.

And the engaging structure is a projecting toothed belt 4.2. The toothed belt 4.2 is formed by a plurality of protruding rack structures, and the distance between the racks is equal to the distance between the threads 1.1.

Example 2:

the present embodiment also discloses a connection terminal, as shown in fig. 1 to 7, which shows the structure of the connection terminal as an independent module, and the connection terminal can be directly installed in various electric devices or circuit breakers for connecting external cables.

Specifically, the terminal in the figure comprises a housing 2 structure, and the housing 2 structure is annularly arranged by a single-layer plate. As shown in fig. 3, the housing 2 includes therein a contact chamber and an operation chamber communicating with each other, and the contact chamber is provided with two openings so as to form a through space. The opening at the upper part is a wire inserting port 5 for inserting a metal body 6 of an external cable. And the lower opening is used for the conductor to pass through and is connected with the internal circuit of the electrical appliance or the circuit breaker.

Further, a rotating shaft 3 is arranged in the contact cavity, and a pressing piece 4 is sleeved on the rotating shaft 3. The piece 4 formula structural design as an organic whole that compresses tightly in this embodiment adopts injection structure, and its major structure is rotation portion 4.3, and rotation portion 4.3 rotates with pivot 3 to be connected. And an arc surface is arranged on one side of the rotating part 4.3, and a plurality of racks are arranged at equal intervals along the arc surface, so that a toothed belt 4.2 structure is formed.

Furthermore, the rotating part 4.3 protrudes towards one side of the wire plugging port 5 to form a pressing end 4.1, and the metal piece entering the wire plugging port 5 is pressed and fixed by the pressing end 4.1. Because the compressing part 4 in the embodiment is of an injection molding structure, a mounting groove can be arranged at the compressing end 4.1 during manufacturing and is used for mounting a metal conductor. The metal conductor is externally connected with a metal connecting wire and is connected with an electric appliance circuit through a soft connecting wire.

Furthermore, only one opening coplanar with the wire insertion opening 5 is arranged on the inner wall of the operation cavity, an operating part 1 is arranged in the operation cavity, the operating part 1 is of a bolt structure, and a nut part at the end part of the operating part is an operating end and falls out of the opening. While the stem 1.2, internally threaded 1.1, is constrained within the casing 2, rotatable along its axis.

As can be seen in fig. 3 and 6, the thread 1.1 of the operating element 1 does not completely extend over the entire shank 1.2, but is provided only close to the curved surface of the pressing element 4. And the toothed belt 4.2 of the pressing piece 4 is inserted into the thread 1.1 to form a meshing state, similar to a transmission structure of a worm and a worm wheel. However, since the entire pressing member 4 rotates around the rotating shaft 3, the arc-shaped surface can keep enough racks to be meshed with the threads 1.1 during rotation, and compared with a sliding lateral pressing structure, the pressing member 4 can still continue to be pressed after being contacted with a metal member, and no large resistance is formed between the pressing member and the shell 2, so that sufficient pressing force can be provided for the metal member, and the metal member abuts against the inner wall of the shell 2 to limit the action of the metal member.

The present invention is not limited to the above-mentioned alternative embodiments, and various other products can be obtained by anyone under the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.

Claims (8)

1. The utility model provides a rotate extrusion binding post, has and compresses tightly piece (4) and operation piece (1), drives through operation piece (1) and compresses tightly piece (4) and rotate and make metal body (6) that insert in binding post from the control end place terminal surface of operation piece (1) compressed tightly its characterized in that:

the operating piece (1) is provided with a thread (1.1), and the pressing piece (4) is driven to rotate in the wiring terminal through the thread (1.1) to form a pressing effect on the metal body (6).

2. A rotary extrusion terminal as claimed in claim 1, wherein: the pressing piece (4) is provided with an arc surface parallel to the action track of the pressing piece (4), and the arc surface is provided with an engaging structure matched with the thread (1.1).

3. A rotary extrusion terminal as claimed in claim 2, wherein: the engaging structure is a protruding toothed belt (4.2).

4. A rotary extrusion terminal as claimed in claim 2, wherein: the engaging structure is a plurality of inward sunken grooves or through holes.

5. A rotary extrusion terminal as claimed in claim 3, wherein: the pressing piece (4) further comprises a pressing end (4.1), and the length of a force arm from the pressing end (4.1) to a rotating point of the pressing piece (4) is not less than the length of the force arm from the meshing structure to the rotating point.

6. A rotary extrusion terminal as claimed in claim 5, wherein: the wiring terminal also comprises a shell (2), and a wiring port (5) is formed in the shell (2); the operating element (1) is limited in the shell (2), and an opening for exposing the operating end of the operating element (1) is arranged on the same side of the wire inserting opening (5) on the shell (2).

7. A rotary extrusion terminal as claimed in claim 6, wherein: the operating part (1) is of a screw rod structure, the operating end of the operating part is a screw cap, and the screw cap penetrates out of the shell (2).

8. A rotary extrusion terminal as claimed in claim 6, wherein: the shell (2) is internally provided with a rotating shaft (3), and the pressing piece (4) is sleeved on the rotating shaft (3) to rotate.

Images