CN201008027Y - A shrapnel crimping pin structure - Google Patents

Abstract

A shrapnel crimping pin structure is used for electrical circuit connection, and is composed of a pin frame 2, crimping shrapnel 3 and pins 1. The crimping shrapnel 3 is formed by bending a strip-shaped stainless steel shrapnel into a ring shape, on which there are strip-shaped holes 31 and protrusions 32 , and the strip-shaped holes 31 are sheathed and fixed on the needle holder 2 . When installing the electric wires, insert the screwdriver 5 into the needle holder 2, then extend the electric wires 6 into the bar-shaped hole 31, pull out the screwdriver 7, and then the electric wires 8 can be tightly clamped on the needle holder 2. The utility model has the advantages of simple structure, convenient operation and firm connection, and is especially suitable for applications in vibration environments.

Description

A shrapnel crimping pin structure

technical field

The utility model relates to a pin structure of an electrical connector, in particular to a crimping pin structure.

Background technique

At present, various plug-in electrical circuit connectors are generally composed of a box body and pins. The input and output wires are connected to the pins by welding, screw crimping or terminal insertion. The pins are generally divided into male pins. And the female pin, the male pin has a solid rod-shaped pin, and the female pin has a cylindrical pin or slot that matches the male pin. After the male pin and the female pin are inserted into each other, that is The lines connected to the two connectors can be conducted. The existing pin structure mainly has the following deficiencies:

1. Since the wires are connected to the contact pins by welding, screw crimping or terminal insertion, it is not easy to install, time-consuming and labor-intensive, and the connection is not firm. Especially in an environment with vibration, the wiring is prone to problems such as virtual welding, Faults such as desoldering, looseness, and disconnection.

2. The pin is integrally formed. It is necessary to open a mold to order a special-shaped copper strip material, then slice it, and then perform various cutting processes to form it. The processing cycle is long and the cost is high.

Utility model content

The utility model provides a connector pin structure with simple structure, convenient installation and firm connection.

The utility model adopts the following technical solutions:

A shrapnel crimping pin structure, which is composed of a needle holder, a crimping shrapnel fixed on the needle holder, and a pin. The crimping shrapnel is formed by bending a long shrapnel into a ring shape, and has a fixed An end and a movable end, the fixed end is fixed on the needle holder and a block is provided at the end, and a strip-shaped hole is provided at the movable end, and the block is inserted into the strip-shaped hole.

The aforementioned insertion pins can be fixed on the bottom of the needle holder by threading, snapping, riveting or other known methods, and the preferred fixing method is riveting.

A preferred needle holder structure is roughly U-shaped, and one end is provided with an inwardly bent "L"-shaped projection, the aforementioned strip-shaped hole is set on the projection and the end of the clamping block is on top. Close to the inner edge of the "L"-shaped curved part of the protrusion, so as to fix the crimping elastic piece on the needle holder.

The pins are divided into male pins and female pins. The male pins are solid rod-shaped, and the female pins are cylindrical. To make the insertion more reliable, a number of ribs extending along the axial direction are protruded from the inner wall of the female pin, and generally 6 ribs are provided. When the male pin and the female pin are plugged together, the connection with the line can be realized.

Since the pin structure of the utility model adopts a split structure, each part can be processed separately, and the pin holder can be formed by cold stamping of a brass plate, and the male and female pins are cut and processed by ordinary copper rods and fixed on the pin On the frame, the crimping shrapnel is made of stainless steel sheet and set on the needle frame, which has the advantages of convenient processing and easy assembly.

When installing the wire, as shown in Figure 5, just insert the screwdriver into the needle holder, squeeze the ring part of the crimping shrapnel, and move the free end of the crimping shrapnel outward, so that the strip hole is facing the wire, and the wire Insert the screwdriver into the strip hole and pull out the screwdriver. Under the action of the elastic force of the crimping spring, the free end of the crimping spring moves inward, so that the wire is tightly clamped on the crimping spring and the needle holder. Compared with the prior art, the connection is not only convenient and fast, but also greatly saves wiring time, which can save 75% of the time compared with the screw connection method, and the connection is firm, especially suitable for applications in vibration environments.

Description of drawings

Figure 1 is a front view of Embodiment 1.

Fig. 2 is a left view of Embodiment 1.

Fig. 3 is a sectional view of the first embodiment.

Fig. 4 is a sectional view of the second embodiment.

Figure 5 is a schematic diagram of the wiring method.

Fig. 6 is an expanded view of the crimping spring.

Detailed ways

The specific embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

Embodiment one

As shown in Figure 1, it is a male pin structure, which is composed of a needle frame 2, a crimping shrapnel 3 and a male pin 1, in which the needle frame 2 is cold punched from a brass plate, and the male pin 1 is cut and processed by a copper rod Formed and riveted on the needle frame 2, the crimping shrapnel 3 is made of stainless steel sheet. The needle holder 2 is provided with an inwardly bent projection 21, the fixed end of the crimping shrapnel 3 is provided with a block 32, and the movable end is provided with a bar-shaped hole 31, and the block 31 is inserted in the bar-shaped hole 32 and the end It is tight against the inner edge of the curved part of the protrusion 21, and the strip hole 31 is sleeved on the root of the protrusion 21. Due to the elastic force of the crimping elastic piece 3 itself, the crimping elastic piece 3 can be fixed on the needle holder.

Embodiment two

As shown in Figure 4, it is a female pin structure, the structure is roughly the same as that of Embodiment 1, the difference is that the connector is composed of a needle frame 2, a crimping shrapnel 3 and a female pin 4, and the female pin 4 is round. It is cylindrical and can be matched with the male pin 1, and six ribs 41 protrude from its inner wall.

The male pin and the female pin form a set of wiring plug-in modules, and the male pin 1 is inserted into the hole of the female pin 4 to make the male pin and the female pin conductive. The installation of the wire 6 is shown in Figure 5. Insert the screwdriver 5 into the needle holder 2, move the strip hole 31 to the left, insert the wire 8 into the strip hole 31, pull out the screwdriver 5, and crimp the shrapnel 3 itself Under the action of the elastic force, the strip hole 31 moves to the right, and the electric wire 6 is tightly clamped on the crimping shrapnel 3 and the needle frame 2, and the installation is completed, the operation is very simple, and the connection is firm.

The above is the specific implementation of the utility model, but the design concept of the utility model is not limited thereto, and any insubstantial modification of the utility model by using this concept is an act of violating the protection scope of the utility model.

Claims (6)

1. shell fragment compression joint type contact pin structure, it is characterized in that: form by punch block, the crimping shell fragment and the contact pin that are fixedly arranged on the punch block, described crimping shell fragment is formed by strip shell fragment looped-shaped bending, have a stiff end and a movable end, this stiff end is fixedly arranged on the punch block and its end is provided with a fixture block, movable end is provided with a bar hole, and described fixture block is inserted in this bar hole.

2. according to the described a kind of shell fragment compression joint type contact pin structure of claim 1, it is characterized in that: described punch block roughly takes the shape of the letter U, the one end is provided with the L-shaped projection that curves inwardly, and described bar hole is placed on this projection and described fixture block end holds out against in the inner edge of " L " of this projection shape bend.

3. according to the described a kind of shell fragment compression joint type contact pin structure of claim 1, it is characterized in that: described contact pin end is riveted on the punch block bottom.

4. according to the described a kind of shell fragment compression joint type contact pin structure of claim 1, it is characterized in that: described contact pin is solid bar-shaped.

5. according to the described a kind of shell fragment compression joint type contact pin structure of claim 1, it is characterized in that: described contact pin is a cylindrical shape, and the internal diameter of its opening is greater than the internal diameter of inner chamber.

6. according to the described a kind of shell fragment compression joint type contact pin structure of claim 5, it is characterized in that: be convexly equipped with some ribs that extend along its axial direction on the inwall of described contact pin.

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