Lantern type large-diameter banana plug electric connector

Abstract

The utility model provides a lantern-type large-diameter banana plug electric connector, which comprises a contact element, the outer wall of the contact element is processed into two conical surfaces of which the large-diameter ends are connected, and one end of the contact element is provided with a fixed end; the fixing end is assembled in the threaded hole, the metal base is installed in the stepped hole, and a bolt is arranged in the counterbore and connected with the fixing hole. The whole contact piece is composed of a plurality of elastic arms, the plurality of elastic arms are uniformly and fixedly connected to one end of the necking end, and the other end of the necking end is connected with the fixed end. After the elastic contact piece is in butt joint with the butt joint end hole, the circumference of the elastic contact piece shrinks inwards, at the moment, the butt joint end hole is stressed, contact strength is improved, certain anti-falling force is generated, and the elastic strength of the elastic wall can be adjusted under the action of a counter bore in the center of the elastic wall.

Description

Technical Field

[0001] The utility model relates to a lantern-type large-diameter banana plug electrical connector. Background Art

[0002] An electrical connector includes a plug and a socket. When used, the plug and socket engage to transmit electrical signals. Banana plug electrical connectors are commonly used in large equipment, such as audio equipment and test equipment. These connectors are easy to plug and unplug and convenient to use. Most current banana electrical connectors can only be used in small-diameter connection holes. When the diameter of the banana connector's docking connection exceeds 4 mm, existing large-diameter banana connectors fail to form a good contact with the docking hole after docking. Some existing banana connectors can make contact but have difficulty disconnecting. To address the issues of banana electrical connectors not being able to make contact and being difficult to plug and unplug, a new banana plug, such as the one disclosed in CN2083347U, is made by using a flexible curved metal wire at the docking end. One end of the curved metal wire is rolled and fastened to the middle of a shaft by a fastening sleeve, or the other end of the curved metal wire is fixed to a rivet hole at the top of the shaft by a rivet. This creates a drum-shaped curved metal wire wrapped around the shaft, giving the docking end elasticity and making it easy to plug and unplug. However, the use of metal wire has limited elasticity and poor resistance to disengagement. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a lantern-type large-diameter banana plug electrical connector.

[0004] The utility model is achieved through the following technical solutions.

[0005] The utility model provides a lantern-type large-diameter banana plug electrical connector, comprising:

[0006] The outer wall of the contact piece is processed into a tapered surface with two large-diameter ends connected, and one end of the contact piece is provided with a fixed end;

[0007] A metal base with a wire connection hole at one end and a threaded hole at the other end. The side of the metal base also has a fixing hole.

[0008] Insulation sleeve, the center of the insulation sleeve is processed with a stepped hole, and the side is processed with a countersunk hole;

[0009] The fixed end is assembled in the threaded hole, the metal seat is installed in the step hole, and a bolt is provided in the countersunk hole to connect with the fixing hole.

[0010] The entire contact piece is composed of a plurality of elastic arms, which are evenly fixed to one end of the necked end, and the other end of the necked end is connected to the fixed end.

[0011] A thin-walled sleeve is fixedly connected to the edge of one end of the metal seat where the threaded hole is processed, and the thin-walled sleeve is arranged outside the insulating sleeve.

[0012] A side surface of the middle portion of the metal seat is processed into a flat surface.

[0013] A wire welding hole is also processed on the side wall of the wire connection hole.

[0014] A plurality of elastic rings are arranged on the outside of the insulating sleeve.

[0015] The insulating sleeve is also processed with a limiting convex ring at one end adjacent to the contact piece.

[0016] The beneficial effect of the present invention is that after the elastic contact piece is docked with the docking end hole, the circumference of the elastic contact piece shrinks inward. At this time, the docking end hole is under pressure, which not only increases the contact strength, but also generates a certain anti-slip force, and the countersunk hole in the center of the elastic wall can adjust the elastic strength of the elastic wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the contact structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the metal seat of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the insulating sleeve of the present utility model.

[0021] In the figure: 1-contact piece, 11-contact end, 12-shrink end, 13-fixed end, 14-limiting protrusion, 15-countersunk hole, 16-elastic arm, 17-notch, 2-metal seat, 21-threaded hole, 22-thin-wall sleeve, 23-fixing hole, 24-plane, 25-wire welding hole, 3-insulating sleeve, 31-elastic ring, 32-countersunk hole, 33-limiting protrusion ring. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the described solution.

[0023] A lantern-type large-diameter banana plug electrical connector, comprising:

[0024] The outer wall of the contact piece 1 is processed into a conical surface with two large diameter ends connected, such as Figure 2As shown, the outer wall of the contact 1 forms a limiting protrusion 14. The highest position, the docking end 11, and the tail end are all tapered surfaces. The protrusion position adopts a rounded transition, and the head of the docking end adopts a chamfered corner. The tapered surface and the rounded corner serve as a guide during docking. One end of the contact 1 is provided with a fixed end 13; during docking, it is affected by the internal force of the socket end and shrinks inward, achieving effective contact after docking. The end of the conical transition 12 is designed with a tapered transition. When the elastic contact is assembled with the fixed metal seat 2, a special fixture is used to reduce the fixed metal seat to prevent it from falling off and ensure reliable contact. The fixed end 13 is designed with an external thread to ensure a reliable connection with the fixed metal seat 12.

[0025] The metal seat 2 has a wire connection hole at one end and a threaded hole 21 at the other end. A fixing hole 23 is also processed on the side of the metal seat 2. A threaded hole 21 is designed at the connection position between the metal seat 2 and the elastic contact piece. At the same time, a thin wall 22 is designed at the head of the fixed metal seat. After the elastic contact piece is threaded and assembled in place, the thin wall 22 is inwardly contracted to make it close to the conical surface of the contact piece, thereby preventing it from falling off and increasing the contact surface.

[0026] Insulating sleeve 3, the center of the insulating sleeve 3 is processed with a stepped hole, and the side is processed with a countersunk hole 32;

[0027] The fixing end 13 is assembled in the threaded hole 21 , the metal seat 2 is installed in the stepped hole, and a bolt is provided in the countersunk hole 32 to connect with the fixing hole 23 .

[0028] Furthermore, the entire contact member 1 is formed by a plurality of elastic arms 16, and the plurality of elastic arms 16 are evenly fixed to one end of the necked end 12, and the other end of the necked end 12 is connected to the fixed end 13, as shown in FIG. Figure 2 As shown, the countersunk holes 15 in the centers of several elastic arms 16 have a depth greater than or equal to the length of the axial slot. The width of the slot together with the diameter and depth of the countersunk hole determine that there will be no interference when the elastic arms 16 shrink inward after docking. At the same time, the diameter of the countersunk hole can adjust the thickness of the elastic arms 16, thereby ensuring the separation force during docking.

[0029] Furthermore, a thin-walled sleeve 22 is fixed to the edge of one end of the metal seat 2 where the threaded hole 21 is processed. The thin-walled sleeve 22 is arranged outside the insulating sleeve 3. After the contact piece 1 is connected to the metal seat 2 through threads, the thin-walled sleeve 22 is shrinked inward to make it close to the conical surface of the contact piece, thereby achieving the purpose of preventing it from falling off and increasing the contact surface.

[0030] Furthermore, a side surface of the middle portion of the metal base 2 is processed into a flat surface 24 , which facilitates the operation of welding the metal base 2 to the wire.

[0031] Furthermore, in order to better fix the wires in the metal seat, wire welding holes 25 are processed on the side walls of the wire connection holes.

[0032] Furthermore, in order to prevent the wire from bending and breaking during use, several elastic rings 31 are provided on the outside of the insulating sleeve 3. After the connector is inserted into the docking hole, the wire will naturally hang down and cause the tail end of the insulating sleeve to bend. When the insulating sleeve bends, the elastic rings on the outer wall will contact to prevent the bending angle from being too large.

[0033] Furthermore, in order to prevent the jack from being damaged during the insertion of the contact, a limiting protrusion 33 is processed on the insulating sleeve 3 at one end adjacent to the contact 1 .

Claims

1. A lantern-type large-diameter banana plug electrical connector, characterized in that: include: A contact member (1), wherein the outer wall of the contact member (1) is processed into a conical surface with two large-diameter ends connected, and a fixed end (13) is provided at one end of the contact member (1); A metal seat (2), wherein one end of the metal seat (2) is provided with a wire connection hole, the other end is processed with a threaded hole (21), and the side surface of the metal seat (2) is also processed with a fixing hole (23); An insulating sleeve (3), wherein the insulating sleeve (3) is processed with a stepped hole at the center and a countersunk hole (32) at the side; The fixed end (13) is assembled in the threaded hole (21), the metal seat (2) is installed in the stepped hole, and a bolt is provided in the countersunk hole (32) to connect with the fixed hole (23).

2. The lantern-type large-diameter banana plug electrical connector according to claim 1, wherein: The entire contact piece (1) is composed of a plurality of elastic arms (16), the plurality of elastic arms (16) are evenly fixed to one end of the necked end (12), and the other end of the necked end (12) is connected to the fixed end (13).

3. The lantern-type large-diameter banana plug electrical connector according to claim 1, wherein: The metal seat (2) is further fixedly connected with a thin-walled sleeve (22) at the edge of one end where the threaded hole (21) is processed. The thin-walled sleeve (22) is arranged outside the insulating sleeve (3).

4. The lantern-type large-diameter banana plug electrical connector according to claim 3, wherein: A side surface in the middle of the metal seat (2) is processed into a flat surface (24).

5. The lantern-type large-diameter banana plug electrical connector according to claim 1, wherein: A wire welding hole (25) is also processed on the side wall of the wire connection hole.

6. The lantern-type large-diameter banana plug electrical connector according to claim 1, wherein: A plurality of elastic rings (31) are provided on the outside of the insulating sleeve (3).

7. The lantern-type large-diameter banana plug electrical connector according to claim 1, wherein: The insulating sleeve (3) is also provided with a limiting convex ring (33) at one end adjacent to the contact piece (1).

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