CN102938511A - Conductor clamping mechanism and connecting terminal - Google Patents

Abstract

The invention discloses a wire clamping mechanism, which includes an elastic piece and a conductive part. Both ends of the elastic piece are bent inwardly. The end is in contact with the conductive part to form a large accommodation space. The middle section of the elastic piece includes a number of through holes. When the wire enters the large accommodation space through the through holes, the wire remains relatively fixed with the elastic piece and the conductive piece. .

Description

A wire clamping mechanism and terminal

technical field

The invention relates to an electrical connection device, in particular to a wire clamping mechanism and a connection terminal for current connection or signal conduction.

Background technique

In order to realize the conductive confluence between the copper wires, a terminal block is used in the prior art, which inserts multiple wires that need to be connected to each other into the wire socket of the terminal block, and the wires are clamped by the terminal clamps, and the wires are connected to each other. form a conductive connection. The terminal block is used for the connection of the wire to the terminal box made of insulating material and the connection of the wire to a contact. The contact has several clamping locations arranged adjacently in a row, into which the stripped ends of the wires are inserted parallel to each other from the same side of the terminal box.

A connection terminal is provided in the prior art CN101060207. As shown in FIG. 1 , FIG. 1 is a schematic structural diagram of a connection terminal used in the prior art. The connection terminal has three clamping locations, each of which is formed between a free end 20 of a leaf spring tongue 21 and a busbar 17 . The structural feature of the connection terminal lies in its main clamping part. As shown in Figure 1, the main clamping part is a triangular stable structure (equivalent to a partial triangle) that needs to cooperate with plastic parts to complete the structural characteristics of a triangular stable structure. One of the disadvantages of this structure is that because the plate spring tongue 21 is a plate sheet, the insertion of the wire 18 produces deformation and resilience, resulting in insufficient clamping force and only one side of the snap-in angle. Therefore, this structure is a unilateral clamping angle, and the clamping force is not large enough. The second shortcoming is that the clamping angle of the plate spring tongue 21 is difficult to control. In the process of manufacturing the connecting terminal, the connecting terminal is controlled by the deformation of the plate spring tongue 21 and the two bending angles of the bus bar 17, so the accumulated tolerance is too large, which easily leads to defective products.

In view of this, there is an urgent need in the prior art for a wire clamping mechanism and terminal for current connection or signal conduction to overcome the defects in the prior art.

Contents of the invention

In order to overcome the defects in the prior art, the present invention provides a wire clamping mechanism and a connection terminal, which can provide double-sided clamping force and are easy to process.

In order to achieve the purpose of the above invention, the present invention discloses a wire clamping mechanism, including an elastic piece and a conductive part, both ends of the elastic piece are bent inward, and the first end of the elastic piece is in contact with the conductive part to form a small accommodating space , the second end of the shrapnel is in contact with the conductive part to form a large accommodation space, the middle section of the shrapnel includes a number of through holes, when the wire enters the larger accommodation space through the through holes, the wire and the shrapnel and The conductive member remains relatively fixed.

Furthermore, the contact point of the conductive element with the middle section of the elastic piece, the contact point with the first end and the contact point with the second end are in a triangular shape.

Furthermore, the second end of the elastic sheet is punched or punched to form a plurality of tongue-shaped leaf springs.

Furthermore, the first end of the elastic piece and the conductive member form an "R" or "J" shape.

Furthermore, the middle section of the elastic sheet also includes several openings, and one end of the conductive member is inserted into the openings.

Furthermore, the leaf spring has a first angle bent outward, and the tongue root of the leaf spring is bent inward to form a second angle.

Furthermore, the range of the angle formed by the leaf spring and the conductive member is less than 60°, the range of the first angle is greater than 120°, and the range of the second angle is greater than 120°.

The invention also discloses a connection terminal. The connection terminal is composed of a terminal box made of insulating material and the above-mentioned wire clamping mechanism. The wire clamping mechanism is located inside the terminal box. The wire clamping mechanism has multiple Two clamping parts arranged adjacent to each other in a row, and the wires are inserted into the clamping parts parallel to each other from one side of the terminal box.

The wire clamping mechanism and connection terminal provided by the present invention have a wide range of applications, and are generally used as a shortcut for short-circuiting or branching of various light-and-dark box wiring ICs in buildings, instrumentation, elevators, railways, etc., or in junction boxes. device. Provide double-sided clamping force for the wires during use to ensure that the wires can be firmly clamped in the terminal and will not fall off even after long-term use. Compared with the prior art, the wire clamping mechanism and connection terminal provided by the present invention are essentially formed by direct punching of a plate-shaped conductor, while ensuring that the cross-sectional area of the conductor on the cross-section is greater than or equal to the current required by the wire passing through it. The flow cross-sectional area requirement is different from the cross-sectional technical solution of bending and forming of the conductive bus body used in the prior art, which makes the production simpler and easier to operate.

Description of drawings

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

Fig. 1 is a structural schematic diagram of a terminal block used in the prior art;

Fig. 2 is a structural schematic diagram of the wire clamping mechanism involved in the present invention;

Fig. 3 is a top view of the wire clamping mechanism involved in the present invention;

Fig. 4 is a side view of the wire clamping mechanism involved in the present invention;

Fig. 5 is a schematic view of the use state of the wire clamping mechanism involved in the present invention.

Detailed ways

A wire clamping mechanism and a connection terminal according to a specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention should be understood as not limited to such embodiments described below, and the technical idea of the present invention can be implemented in combination with other known technologies or other technologies having the same functions as those known technologies.

In the following description, in order to clearly show the structure and working method of the present invention, many directional words will be used to describe, but "front", "rear", "left", "right", "outer", "inner" should be used Words such as ", "outward", "inward", "upper" and "lower" are to be understood as convenient terms, and should not be understood as restrictive terms. In addition, the word "inner" used in the following description mainly refers to the end close to the wire; the word "outer" mainly refers to the end away from the wire.

The purpose of the present invention is to provide a new wire clamping mechanism and connection terminal. The wire clamping mechanism and connection terminal are used to solve the problem of connecting current between wires. When solving the current connection problem, whether the wire and the wire clamping mechanism can be effectively clamped is related to the safety of the product application. In addition, it is also hoped that the wire clamping mechanism and the connecting terminal can be easily operated and used by construction personnel.

In order to achieve the purpose of the above invention, the present invention provides a wire clamping mechanism, which includes an elastic piece and a conductive member, both ends of the elastic piece are bent inward, and the first end of the elastic piece is in contact with the conductive member to form a small accommodating space , the second end of the shrapnel is in contact with the conductive part to form a large accommodation space, the middle section of the shrapnel includes a number of through holes, when the wire enters the larger accommodation space through the through holes, the wire and the shrapnel and The conductive member remains relatively fixed. For example, both the larger accommodating space and the smaller accommodating space may be semicircular or similar to a sector, or even substantially rectangular.

In order to describe the technical solutions disclosed in the invention in detail, the invention provides a preferred implementation mode. Figure 2 is a schematic structural view of the wire clamping mechanism involved in the present invention, Figure 3 is a top view of the wire clamping mechanism, Figure 4 is a side view of the wire clamping mechanism, and Figure 5 is a wire clamping mechanism involved in the present invention Schematic diagram of the state of use of the institution.

As shown in FIGS. 2 to 5 , the wire clamping mechanism includes an elastic piece 10 and a conductive member 20 . One end of the conductive member 20 is in contact with the elastic piece 10 . The middle section of the elastic piece 10 includes a plurality of through holes 11, and the bare metal wire 31 after removing the outer paint leather 30 or rubber sheath of the wire enters the wire clamping mechanism through the through holes 11, and the wire is connected with the elastic piece 10 and the conductive member. 20 remains relatively constant. In this embodiment, the method adopted is to set several holes 13 on the elastic piece 10 , and make the part of the conductive member 20 pass through the holes 13 . In another embodiment, one end of the conductive member 20 and the elastic piece 10 may be directly fixed, such as welding.

The elastic piece 10 is a thin metal plate, and the two ends of the metal plate are bent inward, which looks like a pocket when viewed from the side. One end of the shrapnel 10 is punched or punched to form a plurality of tongue-shaped leaf springs 12 . The end of the plate spring 12 is in contact with the conductive member 20, as point C in FIG. 4 . The other end of the elastic piece 10 is bent inwards to contact the conductive member 20 to form a contact point B, whose shape is similar to an "R" shape viewed from the side. In another embodiment, the other end of the elastic piece 10 is bent inward and the shape formed by the conductive member 20 is a "J" shape. Since one end of the conductive member 20 is in contact with the middle section of the elastic piece 10 to form a contact point A, the three contact points between the conductive member 20 and the elastic piece 10 form a triangle shape. Provide double-sided clamping force for the wires during use to ensure that the wires can be firmly clamped in the terminal and will not fall off even after long-term use.

In order to provide an optimal clamping force, the leaf spring 12 is provided with two bends. The first bend 14 is an inward bend, that is, a bend toward the conductive member, and its preferred angle is greater than 120°. The function of the first bend 14 is to adjust the lead-in angle when the wire is inserted. The second bend 15 is an outward bend, that is, a bend away from the conductive part, and its preferred angle is greater than 120°. The function of the second bend 15 is to adjust the clamping angle when the wire is inserted. In order to further enhance the clamping force, the terminal end of the leaf spring 12 is bent toward the conductive member, and the included angle is preferably less than 60°. When the wire is inserted into the wire clamping mechanism, it is clamped immediately and is not easy to loosen.

The invention also provides a connection terminal, which is composed of a terminal box made of insulating material and a wire clamping mechanism. The terminal box is usually located on the outside of the wire clamping mechanism for insulation and protection of user safety. The wire clamping mechanism is located inside the terminal box. The wire clamping mechanism has a plurality of clamping parts arranged adjacent to each other in a row, and the wires are inserted into the clamping parts from one side of the terminal box parallel to each other.

The wire clamping mechanism and connection terminal provided by the present invention have a wide range of applications, and are generally used as a shortcut for short-circuiting or branching of various light-and-dark box wiring ICs in buildings, instrumentation, elevators, railways, etc., or in junction boxes. device. Provide double-sided clamping force for the wires during use to ensure that the wires can be firmly clamped in the terminal and will not fall off even after long-term use. Compared with the prior art, the wire clamping mechanism and connection terminal provided by the present invention are essentially formed by direct punching of a plate-shaped conductor, while ensuring that the cross-sectional area of the conductor on the cross-section is greater than or equal to the current required by the wire passing through it. The flow cross-sectional area requirement is different from the cross-sectional technical solution of bending and forming of the conductive bus body used in the prior art, which makes the production simpler and easier to operate.

What is described in this specification is only preferred specific embodiments of the present invention, and the above embodiments are only used to illustrate the technical solutions of the present invention rather than limit the present invention. All technical solutions obtained by those skilled in the art through logical analysis, reasoning or limited experiments according to the concept of the present invention shall fall within the scope of the present invention.

Claims (8)

1. wire fixture, comprise shell fragment and electric-conductor, it is characterized in that, the two ends of described shell fragment all bend inwards, the first end of described shell fragment contacts with described electric-conductor and forms a less spatial accommodation, and the second end of described shell fragment contacts with described electric-conductor and forms a larger spatial accommodation, comprises some through holes on the interlude of described shell fragment, when described wire entered described larger spatial accommodation by described through hole, described wire kept relative fixing with described shell fragment and described electric-conductor.

2. wire fixture as claimed in claim 1 is characterized in that, the interlude contact point of described electric-conductor and described shell fragment, is a triangle with the contact point of described first end and with the contact point of described the second end.

3. wire fixture as claimed in claim 1 is characterized in that, the second end of described shell fragment forms a plurality of flat springs that are ligule through die-cut or stamping-out.

4. wire fixture as claimed in claim 1 is characterized in that, the first end of described shell fragment and described electric-conductor are one " R " or " Jie " shape.

5. wire fixture as claimed in claim 1 is characterized in that, also comprises some openings on the interlude of described shell fragment, and an end of described electric-conductor inserts in the described opening.

6. wire fixture as claimed in claim 3 is characterized in that, described flat spring has the first angle of an outward, and the root of the tongue of described flat spring bends inwards and forms one second angle.

7. wire fixture as claimed in claim 6 is characterized in that, the scope of described flat spring and the formed angle of described electric-conductor is less than 60 °, and the scope of described the first angle is greater than 120 °, and the scope of described the second angle is greater than 120 °.

8. binding post, it is characterized in that, the terminal board that described binding post is made by an insulating material and form such as each described wire fixture of claim 1 to 7, it is inner that described wire fixture is positioned at described terminal board, described wire fixture has a plurality of clamping positions disposed adjacent one another in delegation, and wire inserts in the described clamping position in parallel with each other from a side of terminal board.

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