CN201008025Y - A shrapnel crimping type connector - Google Patents

Abstract

The utility model relates to a shrapnel press type connector, which is employed for electric circuit connection and comprises a box body and a plurality of connectors, wherein the box body comprises a body 21 and a box cover 1, and is provided with a plurality of wire plug-in holes 11 and press connecting holes 21, the connector comprises a punch block 4, a pressing shrapnel 3 and a contact pin 5, and is provided with a bar hole 31. When installing the wire, a screw driver 7 is pressed in the pressing connection hole, and wire 8 enters into the bar whole 31, then one should extract the screw driver 7, and the wire 8 is firmly clipped at the punch block 4. The connector is divided into male plug and female plug, wherein the male plug contact pin is of tube shape, the female plug contact pin is of cylinder shape, one can plug the male plug into the female plug to connect the circuits at the female and male plugs. The utility model is simple in structure, convenient in operation, which is firm in connection and especially suitable for employment in vibrating environment.

Description

A shrapnel crimping type connector

technical field

The utility model relates to an electric circuit connector, in particular to a plug-in electric circuit connector.

Background technique

At present, various plug-in electric line connectors are generally composed of a box body and a connector. The input and output wires are connected to the connector by welding, screw crimping or terminal insertion. The connector is divided into male plugs The corresponding connectors are divided into male connectors and female connectors. The pins of the male connectors are solid pins, and the female connectors are equipped with cylindrical pins or sockets that match the pins of the male connectors. slot, after the male and female plugs are inserted into each other, the lines connected to the two connectors can be conducted. The existing connectors mainly have the following deficiencies:

1. The connection between the wire and the connector is not firm, especially in a vibration environment, which is prone to failures such as virtual welding, desoldering, loosening, and disconnection.

2. Since the wires are connected to the connectors by welding, screw crimping or terminal plugging, it is inconvenient to install, time-consuming and labor-intensive.

3. The existing pins are 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 crimping type connector with simple structure, convenient installation and firm connection.

The utility model adopts the following technical solutions:

A shrapnel crimping type connector, which is composed of a cylindrical box body and several plug connectors fixed in it, wherein, the plug connectors are composed of a needle holder, a pressure connector fixed in the needle holder The crimping shrapnel is composed of a strip shrapnel bent into a ring shape and has a fixed end and a movable end. The fixed end is fixed on the needle frame and a card is provided at the end block, the movable end is provided with a strip-shaped hole, and the block is inserted into the strip-shaped hole; the box body is provided with several wire jacks and crimping holes, and the wire jacks and crimping holes are The connection holes communicate with the movable end and the annular part of the crimping spring respectively; one end of the insertion pin is fixed on the needle frame, and the other end is inserted into the cavity of the box body.

A preferred needle holder structure is roughly U-shaped, and one end is provided with an inwardly bent "L"-shaped bump, the strip-shaped hole is sleeved on the bump and the end of the block The part is pressed against the inner edge of the "L"-shaped curved part of the protrusion, so that the crimping spring is fixed on the needle holder, and the pin is riveted to the bottom of 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. In order to facilitate insertion and make the insertion more reliable, the inner diameter of the female pin opening is larger than the inner diameter The inner diameter of the cavity, and a number of ribs extending along the axial direction protrude from the inner wall. When the male pin and the female pin are plugged together, the communication between the two connectors can be realized.

A preferred box structure is composed of a body and a box cover, the box cover is provided with a hook, the body is provided with a flange engaged with the aforementioned hook, the wire jack and the The crimping hole is set on the box cover, and the plug-in piece is clamped between the body and the box cover. In order to facilitate the connection between the male plug and the female plug, the inner wall of the male plug box is provided with grooves parallel to the axial direction of the pins, and the outer surface of the female plug box is provided with convex strips parallel to the axial direction of the pins , the raised strip matches the groove to make the insertion positioning more accurate.

In order to facilitate wiring and installation operations, the preferred structure of the wire jack is a cylindrical stepped hole with a large top and a small bottom, and the preferred structure of the crimping hole is a wedge-shaped hole.

The connector of the shrapnel crimping connector adopts a split structure, and each part can be processed separately. The needle frame can be cold stamped from brass plate, and the male and female pins are cut and processed by ordinary copper rods and riveted. It is fixed on the needle holder, and the crimping shrapnel is directly placed on the needle holder after processing. The box body is composed of a body and a cover plate, and the connector is sandwiched between the body and the cover plate, and the body and the cover plate are fixed by snap-fitting. Therefore, the utility model has the advantages of convenient processing and easy assembly.

When installing the wire, just insert the screwdriver into the crimping hole, squeeze the annular part of the crimping shrapnel, and the free end of the crimping shrapnel moves outward, so that the strip hole is facing the wire jack, and the wire is inserted into the bar Insert the screwdriver into the hole and pull out the screwdriver. Under the action of the elastic force of the crimping shrapnel, the free end of the crimping shrapnel moves inward, so that the wire is tightly clamped on the crimping shrapnel 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 cross-sectional view of Embodiment 1.

Fig. 2 is a sectional view of the second embodiment.

Fig. 3 is a front view of the first embodiment of the connector.

Fig. 4 is a left view of the first embodiment of the connector.

Figure 5 is a schematic diagram of the wiring method.

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

Fig. 7 is a cross-sectional view of the box body of Embodiment 1.

Fig. 8 is a sectional view of the box body of the second embodiment.

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, the shrapnel crimp connector is a male plug, and its box body is made of insulating plastic injection molding, including a body 21 and a box cover 1. The box body box cover 1 is provided with a wire jack 11 and a crimping connector. The hole 12 is provided with a groove 23 on the body 21 . The connector is clamped and fixed between the body 21 and the box cover 1, and is composed of a needle holder 4, a crimping shrapnel 3 and a male pin 5, wherein the needle holder 4 is made of brass plate cold punched, and the male pin 5 is made of The copper rod is cut and processed, and the crimping shrapnel 3 is made of stainless steel sheet. The needle holder 4 is provided with an inwardly bent projection 41, 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 top Close to the inner edge of the curved part of the protrusion 41, the strip hole 31 is sleeved on the root of the protrusion 41, and the crimping spring 3 can be fixed on the needle holder due to the elastic force of the crimping spring 3 itself.

Embodiment two

As shown in Figure 2, the shrapnel crimping type connector is a female plug, and its structure is roughly the same as that of Embodiment 1. The pin 6 is cylindrical and fits with the male pin 5. The box body 22 is provided with a convex strip 24, which matches the aforementioned groove 23. When plugged in, the convex strip 24 slides into the concave In slot 23.

The male plug and the female plug form a group of wiring modules. Insert the box body 22 of the female plug into the box body 21 of the male plug, and then insert the male pin 5 into the female pin 6, so that the male plug and the female plug are guided Pass. The installation of the electric wire 8 is shown in Figure 5. Insert the screwdriver 7 into the crimping hole 12, move the bar-shaped hole 31 to the left, extend the electric wire 8 into the bar-shaped hole 31, pull out the screwdriver 7, and press the crimping shrapnel 3 Under the action of its own elastic force, the bar-shaped hole 31 moves to the right, and the wire is tightly clamped on the crimping shrapnel 3 and the needle holder 4, 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 (8)

1. a shell fragment compression connector is made of the box body that is tubular and several plug connectors that are fixedly arranged in it, it is characterized in that:

Described plug connector is made up of punch block, the crimping shell fragment and the contact pin that are fixedly arranged in the punch block; Described crimping shell fragment is formed by strip shell fragment looped-shaped bending, has a stiff end and a movable end, and this stiff end is fixedly arranged on the punch block and its end is provided with a fixture block, and movable end is provided with a bar hole, and described fixture block is inserted in this bar hole;

Described box body is provided with several cable jacks and crimping hole, and described cable jack and crimping hole communicate with the movable end and the annulus of crimping shell fragment respectively; Described contact pin one end is fixedly arranged on the punch block, and the other end is inserted and stretched in the cavity of box body.

2. according to the described a kind of shell fragment compression connector 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, described bar hole is sheathed on this projection and described fixture block end holds out against in the inner edge of " L " of this projection shape bend, and described contact pin is riveted on the punch block bottom.

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

4. according to the described a kind of shell fragment compression connector of claim 3, it is characterized in that: described inboard wall of cartridge is provided with the groove parallel with the contact pin axial direction.

5. according to the described a kind of shell fragment compression connector 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, and is convexly equipped with some ribs that extend along its axial direction on its inwall.

6. according to the described a kind of shell fragment compression connector of claim 5, it is characterized in that: described cartridge outer surface is provided with the raised line parallel with the contact pin axial direction.

7. according to the described a kind of shell fragment compression connector of claim 1, it is characterized in that: described box body is made up of body and lid, described lid is provided with grab, described body is provided with the flange that fastens with aforementioned grab, described cable jack and crimping hole are located on the lid, and described plug connector is located between body and the lid.

8. according to the described a kind of shell fragment compression connector of claim 1, it is characterized in that: described cable jack is up big and down small cylindrical shoulder hole, and described crimping hole is a wedged hole.

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