CN111555056A - Force-bearing type quick wiring terminal - Google Patents

Abstract

The invention relates to the field of electric power tools, in particular to a force-bearing type quick connecting terminal, which comprises a terminal body made of hard conductive materials, wherein the terminal body comprises a lead inserting cylinder and a connecting terminal which are fixedly connected or fixed into a whole, the inner cavity of the lead inserting cylinder is a conical cylinder-shaped inner cavity, the port of the lead inserting cylinder is a small-diameter end, a conical cylinder-shaped pressing sleeve is coaxially and coaxially arranged in the conical cylinder-shaped inner cavity in the same direction, the conical cylinder-shaped pressing sleeve is formed by surrounding a plurality of wedge-shaped pressing sheets made of hard conductive materials and is bundled together through an elastic ferrule, a forcing spring is also arranged in the lead inserting cylinder, and the forcing spring is abutted against the conical cylinder-shaped pressing sleeve and applies acting force towards the port direction of the corresponding lead inserting cylinder to the conical cylinder-; the invention can replace the traditional crimping mode, realizes the quick conductive connection between the lead and the wiring terminal, and has the advantages of firm connection, large conductive overcurrent area, convenient operation, safety and durability.

Description

A load-bearing type quick connection terminal

technical field

The invention relates to the field of electric tools, in particular to a load-bearing type quick connection terminal.

Background technique

At present, the connection method between the wire and the terminal is usually to insert the wire into the wire insertion cylinder of the terminal, and then use the pressing pliers to squeeze the wire insertion cylinder to deform and compress the wire. This crimping connection method is resistant to The tensile strength is not high and there are hidden dangers. The long-term use of the terminal and the wire is subject to thermal expansion and cold contraction, which will easily lead to a gap between the wire insertion cylinder and the wire deformation, which may cause dangers such as fire, fire or open circuit, and there is a serious safety hazard. This connection method is time-consuming and labor-intensive, and the installation efficiency is low, and it is not suitable for high-altitude operations.

SUMMARY OF THE INVENTION

In order to solve the above problems, the task of the present invention is to provide a load-bearing type quick connection terminal, which can replace the traditional crimping method, realize the rapid conductive connection between the wire and the connection terminal, and the connection is reliable, the conductive overcurrent area is large, and the operation Convenient, safe and durable.

The task of the present invention is achieved through the following technical solutions:

A load-bearing type quick connection terminal, comprising a terminal body made of hard conductive material, the terminal body comprises a wire insertion tube and a connection terminal that are fixedly connected or integrated into one, and the inner cavity of the wire insertion tube is in the shape of a cone. The inner cavity and the port of the wire insertion cylinder are the small diameter end of the conical cylinder cavity. A movable cone cylinder pressure sleeve is coaxially arranged in the wire insertion cylinder, and the cone cylinder pressure sleeve is in the same direction as the cone cylinder inner cavity. The cone-shaped pressing sleeve is formed by a number of wedge-shaped pressing pieces of hard conductive material. The cone-shaped pressure sleeve is connected and a force toward the direction of the port corresponding to the wire insertion cylinder is applied to the cone-shaped pressure sleeve.

Preferably, a movable wire inlet cap is arranged in the middle hole of the conical pressure sleeve, the opening of the wire inlet cap faces the port of the wire insertion cylinder, and the wire inlet cap is made of elastic material so that it can be connected with the conical pressure sleeve. The inner wall of the middle hole is elastically tightly fitted, and the initial position of the wire inlet cap is at the port of the middle hole of the conical pressure sleeve. When the wire is inserted from the wire insertion tube, the wire inlet cap can be inserted, and then the wire inlet cap can be pushed through. Conical Compression Sleeve.

Preferably, the opening of the wire inlet cap is a flared structure that expands outward, and the flared structure is made of elastic material to facilitate elastic tight fit with the inner wall of the middle hole of the cone-shaped pressure sleeve.

Preferably, the inner side of the wedge-shaped pressing sheet is provided with anti-skid lines for increasing friction.

Preferably, the wire insertion barrel and the connection terminal are fixedly connected together by screw connection, and a positioning pin is further provided at the connection, and the positioning pin vertically passes through the axis of the wire insertion barrel.

Preferably, the load-bearing type quick-connect terminal further comprises an insulating casing, the insulating casing is covered outside the wire plugging barrel, the connection terminal is exposed from the insulating casing, and one end of the insulating casing is connected to the wire plugging barrel or the connecting terminal The outer side of the wire is sealed and connected, and the other end is provided with a wire inlet for the wire to be inserted into the wire insertion cylinder. The wire inlet corresponds to the port position of the wire insertion cylinder. The port of the wire inlet is provided with a conical cylindrical grid sleeve that is retracted inward, a sealing rubber sleeve is arranged in the conical cylindrical grid sleeve, and a corresponding conical cylindrical locking end is provided on the thread locking cap. The locking wire cap can press the conical cylindrical grid sleeve to be closed inward through the conical cylindrical locking end, and then press the sealing rubber sleeve on the insulating sheath of the wire to realize sealing.

When in use, directly insert the wire into the wire insertion tube of the terminal, and the end of the wire pushes against the small diameter end of the cone-shaped pressure sleeve. Until the end of the wire can pass through the middle hole of the cone-shaped pressure sleeve, under the force of the tightening spring and the guidance of the cone-shaped inner cavity, each wedge-shaped pressure piece of the cone-shaped pressure sleeve will stick to the outside of the wire. and the conical inner cavity, so that each wire is conductively connected to the terminal body through the wedge-shaped pressing piece, and the overcurrent area is large. When the wire is pulled outward, the wire will drive the conical pressing sleeve toward the conical cylindrical The small diameter end of the inner cavity moves, so that each wedge-shaped pressing piece of the cone-shaped pressing sleeve will hug the outer side of the wire and lock the wire, so that the wire will not be loosened from the terminal body even if it bears a large pulling force. take off. After the wire is inserted, the insulating casing is locked on the insulating sheath of the wire through the locking cap, and both ends of the insulating casing are sealed, so that the waterproof effect is good.

The beneficial effects of the present invention are as follows: (1) it can replace the traditional crimping method to realize the fast conductive connection between the wire and the terminal, and the connection is firm, the conductive overcurrent area is large, the operation is convenient, safe and durable; (2) the wire inlet cap is provided, and The opening of the wire inlet cap is a flared structure that expands outward, which can guide the wire when the wire is inserted into the middle hole of the cone-shaped pressure sleeve, and is conducive to pushing the cone-shaped pressure sleeve to move and spread, which is more conducive to the wire ③ The terminal body is a split structure, which is convenient for the production and assembly of the entire terminal; ④ The positioning pin is set to increase the reliability of the connection between the wire insertion tube and the connection terminal, and the positioning pin is located at the end of the wire insertion tube. And vertically through the axis of the wire insertion cylinder, it can play a limiting role during the wire insertion process; Fast and effective sealing, and can further increase the reliability of the wire connection.

Description of drawings

Fig. 1 is the structural representation of the load-bearing type quick connection terminal of the present invention;

Fig. 2 is the structural schematic diagram of the load-bearing type quick connection terminal of the present invention in the use state;

FIG. 3 is a schematic diagram of the internal structure of the load-bearing type quick connection terminal of the present invention in a use state.

Fig. 4 is the structural schematic diagram of the conical cylinder-shaped pressing sleeve of the load-bearing type quick-connect terminal of the present invention;

5 is a schematic view of the structure of the wire inlet cap of the load-bearing type quick connection terminal of the present invention.

Among them, the terminal body 1, the connecting terminal 11, the wire insertion cylinder 12, the conical cylindrical cavity 121, the positioning pin 13, the insulating shell 2, the wire inlet 21, the conical cylindrical grid sleeve 211, the wire locking cap 22, the cone Cylinder-shaped locking end 221, sealing rubber sleeve 23, conical cylinder-shaped pressure sleeve 3, wedge-shaped pressure plate 31, anti-skid pattern 311, elastic ferrule 32, tightening spring 4, wire inlet cap 5, horn-shaped structure 51, wire 6 , Insulating skin 61.

Detailed ways

The present application will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present application in a schematic manner, so they only show the structures related to the present application.

In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for convenience Describe the application and simplify the description without indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the application. In the description of this application, unless otherwise specified, "a plurality" and "a number of" mean two or more.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

As shown in Figures 1-5, a load-bearing type quick-connect terminal includes a terminal body 1 made of conductive metal, and an insulating shell 2. The terminal body 1 includes a wire plug-in barrel 12 and a connection terminal that are fixedly connected together 11. The wire insertion barrel 12 is used to fix the connection wire, and the connection terminal 11 is used to fix the connection of other electrical terminals. The inner cavity of the wire insertion barrel 12 is a cone-shaped inner cavity 121 and the port of the wire insertion barrel 12 is a cone. At the small diameter end of the cylindrical cavity 121, a movable conical pressure sleeve 3 is coaxially placed in the wire insertion cylinder 12. The conical pressure sleeve 3 is in the same direction as the conical cylindrical cavity 121. It is enclosed by four wedge-shaped pressing pieces 31 made of metal material. Each wedge-shaped pressing piece 31 is bundled together by an elastic ferrule 32. The inner side of the wedge-shaped pressing piece 31 is provided with anti-skid lines 311 for increasing friction. A pressing spring 4 is also arranged in the connecting barrel 12 , and the pressing spring 4 abuts against the conical cylindrical pressing sleeve 3 and exerts a force toward the port corresponding to the wire inserting barrel 12 .

A movable wire inlet cap 5 is arranged in the middle hole of the cone-shaped pressure sleeve 3. The opening of the wire inlet cap 5 faces the port of the wire insertion cylinder 12, and the opening of the wire inlet cap 5 is an outwardly expanding trumpet-shaped structure 51. The shape structure 51 is made of elastic material to facilitate elastic tight fit with the inner wall of the middle hole of the cone-shaped pressure sleeve 3. The initial position of the wire inlet cap 5 is located at the port of the middle hole of the cone-shaped pressure sleeve 3. When the wire is inserted from the wire When the socket 12 is inserted, the wire inlet cap 5 can be inserted, and then the wire inlet cap 5 can be pushed through the conical pressure sleeve 3 . In other embodiments, the small diameter end port of the cone-shaped pressure sleeve 3 can also be designed to be an everted flared structure to facilitate wire insertion.

The wire insertion barrel 12 and the connection terminal 11 are fixedly connected together by screw connection, and a positioning pin 13 is also provided at the connection, and the positioning pin 13 vertically passes through the axis of the wire insertion barrel 12 .

The insulating casing 2 is covered outside the wire plug-in barrel 12 , the connecting terminal 11 is exposed on the insulating casing 2 , one end of the insulating casing 2 is sealedly connected to the outer side of the connecting terminal 11 , and the other end is provided with a hole for the wire 6 to be inserted into. The wire inlet 21, the wire inlet 21 corresponds to the position of the port of the wire insertion cylinder 12, the insulating housing 2 also includes a wire locking cap 22 corresponding to the wire inlet 21, and the port of the wire inlet 21 is provided with an inwardly retracted cap. The conical cylindrical grid sleeve 211 is provided with a sealing rubber sleeve 23 in the conical cylindrical grid sleeve 211, and the corresponding conical cylindrical locking end 221 is provided on the locking wire cap 22, and the locking wire cap 22 can be screwed through the conical cylinder. The shape locking end 221 presses the cone-shaped grid sleeve 211 to fold inward, and then presses the sealant sleeve 23 on the insulating outer skin 61 of the wire 6 to achieve sealing; in this embodiment, the insulating outer shell 2 is an integral part of injection molding In other embodiments, the insulating shell 2 can also be a series or a split structure.

When in use, directly insert the wire 6 into the wire insertion tube 12 of the terminal, insert the end of the wire 6 into the wire inlet cap 5 and push it forward against the small diameter end of the cone-shaped pressure sleeve 3. The inside of the wire insertion tube 12 moves, and the space gradually increases, and each wedge-shaped pressing piece 31 will expand radially outward under the spreading action of the wire inlet cap, until the end of the wire 6 can push the wire inlet cap 5 from the cone. The middle hole of the shaped pressure sleeve 3 passes through, and under the force of the pressing spring 4 and the guidance of the cone-shaped inner cavity 121, each wedge-shaped pressure piece 31 of the cone-shaped pressure sleeve 3 will closely adhere to the outer side of the wire 6 and the cone. between the cylindrical cavities 121, so that each wire 6 is conductively connected to the terminal body 1 through the wedge-shaped pressing piece 31, and the flow area is large. When the wire 6 is pulled outward, the wire 6 will drive the tapered cylindrical pressing sleeve. 3 moves toward the small-diameter end of the conical cylindrical cavity 121, so that each wedge-shaped pressing piece 31 of the conical cylindrical pressure sleeve 3 will hug the outer side of the wire 6, and lock the wire 6, so that the wire 6 can be A large pulling force will not come loose from the terminal body 1 . After the wire 6 is inserted, the insulating casing 2 is locked on the insulating casing 61 of the wire 6 through the wire locking cap 22 , and both ends of the insulating casing 2 are sealed.

The beneficial effects of the present invention are as follows: (1) it can replace the traditional crimping method to realize the fast conductive connection between the wire and the terminal, and the connection is firm, the conductive overcurrent area is large, the operation is convenient, safe and durable; (2) the wire inlet cap is provided, and The opening of the wire inlet cap is a flared structure that expands outward, which can guide the wire when the wire is inserted into the middle hole of the cone-shaped pressure sleeve, and is conducive to pushing the cone-shaped pressure sleeve to move and spread, which is more conducive to the wire ③ The terminal body is a split structure, which is convenient for the production and assembly of the entire terminal; ④ The positioning pin is set to increase the reliability of the connection between the wire insertion tube and the connection terminal, and the positioning pin is located at the end of the wire insertion tube. And vertically through the axis of the wire insertion cylinder, it can play a limiting role during the wire insertion process; Fast and effective sealing, and can further increase the reliability of the wire connection.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, and should also cover, without departing from the inventive concept, the above-mentioned technical features or their Other technical solutions formed by any combination of equivalent features. For example, a technical solution is formed by replacing the above-mentioned features with the technical features disclosed in this application (but not limited to) with similar functions.

Claims (6)

1. The utility model provides a quick binding post of load type, a serial communication port, include the terminal body of being made by the electrically conductive material of stereoplasm, the terminal body includes a fixed connection or solid wire plug section of thick bamboo and connecting terminal as an organic whole, the inner chamber of a wire plug section of thick bamboo is the path end of awl cylindric inner chamber and wire plug section of thick bamboo, the coaxial awl cylindric pressure cover that sets up a activity in the wire plug section of thick bamboo, the awl cylindric pressure cover is unanimous with awl cylindric inner chamber direction, the awl cylindric pressure cover is enclosed by the wedge preforming of the electrically conductive material of a plurality of stereoplasm and is formed, each wedge preforming is in the same place through the elasticity lasso receipts, still be equipped with in the wire plug section of thick bamboo and compel tight spring, compel tight spring butt awl cylindric pressure cover and exert the effort that corresponds the port direction of a wire plug section.

2. The force-bearing type quick wiring terminal as claimed in claim 1, wherein the central hole of the conical cylindrical pressing sleeve is provided with a movable wire inlet cap, the opening of the wire inlet cap faces the port of the wire inserting sleeve, the wire inlet cap is made of elastic material so as to be capable of elastically and tightly fitting with the inner wall of the central hole of the conical cylindrical pressing sleeve, the initial position of the wire inlet cap is located at the port of the central hole of the conical cylindrical pressing sleeve, when a wire is inserted from the wire inserting sleeve, the wire inlet cap can be inserted, and then the wire inlet cap is pushed to pass through the conical cylindrical pressing sleeve.

3. The force-bearing type quick wiring terminal as claimed in claim 2, wherein the opening of the wire inlet cap is of an outwardly expanded trumpet-shaped structure, and the trumpet-shaped structure is made of an elastic material so as to be elastically and tightly fitted with the inner wall of the middle hole of the conical cylindrical pressing sleeve.

4. The force-bearing type quick connecting terminal as claimed in claim 1, wherein the inner side of the wedge-shaped pressing piece is provided with anti-slip lines for increasing friction force.

5. The force-bearing type quick connecting terminal as claimed in claim 1, wherein the wire insertion tube and the connecting terminal are fixedly connected together by a threaded connection, and a positioning pin is further provided at the connection position and vertically penetrates through the axis of the wire insertion tube.

6. The force-bearing type quick connection terminal as claimed in claim 1, further comprising an insulating housing covering the wire insertion barrel, the connecting terminal is exposed out of the insulating shell, one end of the insulating shell is hermetically connected with the wire insertion cylinder or the outer side of the connecting terminal, the other end of the insulating shell is provided with a wire inlet for inserting a wire into the wire insertion cylinder, the position of the wire inlet corresponds to that of the port of the wire insertion cylinder, the insulating shell further comprises a wire locking cap corresponding to the wire inlet, the port department of inlet wire is equipped with the awl cylindric grid cover that draws in inwards, is equipped with the sealing rubber sleeve in the awl cylindric grid cover, is equipped with corresponding awl cylindric locking end on the locking wire cap, and the locking wire cap of screwing can oppress awl cylindric grid cover and inwards draw in through awl cylindric locking end, and then compresses tightly the sealing rubber sleeve on the insulating crust of wire in order to realize sealedly.

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