CN201238116Y - Self-locking plug type electric connector plug and self-locking plug type electric connector - Google Patents

Abstract

The utility model relates to a self-locking plug-in electric connector and a plug thereof. The plug includes a pipe body with a stepped pipe surface at one end and a stepped lock sleeve that is worn on the stepped pipe surface of the pipe body. The lock sleeve includes a basic sleeve The pipe section and the elastic claw casing pipe section which is arranged at one end of the basic casing section and has an inner diameter smaller than the basic casing section. The elastic claw sleeve pipe section has radial protrusions on the outer surface of each finger end of the claw piece. The outer pipe body is fixed with an anti-off positioning sleeve, and the elastic claw sleeve pipe section of the locking sleeve is matched with the pipe body. There is a fingertip inner ring between the finger end of the elastic claw sleeve pipe section of the lock sleeve and the part close to the finger end and the pipe body. Close the ring gap. This structure shortens the cantilever length of the claws of the locking sleeve and enhances its rigidity, which not only ensures a certain radial elasticity of the claws of the locking sleeve to realize the self-locking insertion and removal of the head seat, but also reduces the damage caused by the shaking of the cable during use. The deformation of the claw piece causes the protrusion to accidentally escape from the groove of the socket, so that the connector is accidentally unlocked, thereby improving the reliability of the electrical connection.

Description

A self-locking plug-in type electrical connector plug and a self-locking plug-in type electrical connector

technical field

The utility model relates to a plug-type electrical connector plug and a plug-type electrical connector.

Background technique

At present, there is a self-locking plug-in type electrical connector, the structure of which is shown in Figure 1. The electrical connector includes a plug and a socket 6 that can be plugged in. The plug includes a tube body 1 with a stepped tube surface at one end and a through-hole A stepped locking sleeve set on the stepped pipe surface of the pipe body. The locking sleeve includes the basic casing section 2 and the elastic claw casing section 7 which is arranged at one end of the basic casing section 2 and has an inner diameter smaller than the basic casing section. The elastic claw casing section 7 is The sleeve wall is divided into several claw pieces by the axial grooves set at intervals along the circumferential direction of the sleeve wall, and the groove depth of the axial groove extends inwardly from the outer end surface of the elastic claw sleeve section 7 of the lock sleeve to the lock sleeve In the vicinity of the step, the interconnected part of the claw piece root fits with the pipe body 1, and the elastic claw sleeve pipe section 7 is provided with a full-body fingertip inward ring gap 3 between the entire claw piece part and the pipe body 1. When there is a diameter When the axial force acts on the claw piece, the claw piece can produce a corresponding radial movement, and when the radial force disappears, the claw piece can rebound and reset. The elastic claw sleeve pipe section 7 has a radial protrusion 4 on the outer surface of each claw finger end, and there is a corresponding groove in the inner hole of the socket 6. When the plug is inserted into the socket, the protrusion 4 is received by the socket 6. The claws are first retracted radially with the claws. After the plug is inserted in place, the protrusion 4 just aligns with the groove on the socket. The protrusion resets and automatically snaps into the groove to realize the self-locking function. After the lock sleeve is assembled on the pipe body 1, an anti-off positioning sleeve 5 needs to be fixed on the pipe body outside the elastic claw sleeve pipe section 7 of the lock sleeve. There is a tapered surface on the end surface of the anti-off positioning sleeve 5 opposite to the lock sleeve 8. When the axial force that separates the plug and socket acts on the pipe body 1 or the socket 6, the anti-off positioning sleeve 5 and the lock sleeve will be closer together, and the tapered surface 8 of the anti-off positioning sleeve will support The claws of the lock sleeve expand outwards, forcing the protrusions on the claws to be firmly connected with the socket to prevent the plug and socket from being disengaged; Squeeze out from the groove of the socket, and receive the fingertips into the annular gap 3, so as to realize the separation of the plug and the socket.

The connector with the above structure has a long claw piece of the elastic claw sleeve pipe section 7 of the locking sleeve, and a full-body finger-tip inward ring gap 3 is provided between the entire claw piece part and the pipe body 1, and only at the root of the claw piece Set the support so that the cantilever of the claw piece is longer, the stiffness of the claw piece is weak, and it is easy to produce elastic deformation; in the process of use, after the cable is connected to the pipe body, when the cable is pulled or shaken, some slight radial force will be lost. It is possible to squeeze the claws to deform them, causing the claws to move inwardly into the ring gap 3 at the fingertips, and the protrusion 4 on the claws to come out of the groove of the socket, causing the connector to be unlocked unexpectedly.

Utility model content

The purpose of the utility model is to provide a self-locking plug-and-pull type electrical connector plug that will not be accidentally unlocked when the cable is pulled or shaken after the cable is connected to the plug body.

Another object of the present invention is to provide a self-locking plug-in electrical connector that does not accidentally unlock when the cable is pulled or shaken after the cable is connected to the plug body.

In order to achieve the above-mentioned first purpose, the utility model adopts the following technical scheme: a self-locking plug-in type electrical connector plug, including a tube body with a stepped tube surface at one end and a stepped tube sleeve on the stepped tube surface of the tube body. The locking sleeve includes a basic casing section and an elastic claw casing section arranged at one end of the basic casing section and having an inner diameter smaller than that of the basic casing section. The elastic claw casing section has radial projections on the outer surface of each claw finger end. From the beginning, an anti-off positioning sleeve is fixed on the pipe body outside the elastic claw sleeve pipe section of the lock sleeve, and the elastic claw sleeve pipe section of the lock sleeve is matched with the pipe body. A fingertip retraction ring gap is provided between the pipe bodies.

In order to achieve the above-mentioned second purpose, the utility model adopts the following technical solution: a self-locking plug-in electrical connector, including a plug and a socket that can realize plug-in and pull-out matching, and the plug includes a tube body with a stepped tube surface at one end and a wear-through The stepped locking sleeve is set on the stepped surface of the pipe body. The locking sleeve includes a basic casing section and an elastic claw casing section with an inner diameter smaller than the basic casing section located at one end of the basic casing section. There are radial protrusions on the outer surface of the fingertips. After the plug and socket are connected in place, the protrusions are snapped into the grooves provided in the inner hole of the socket. The anti-off positioning sleeve is characterized in that the elastic claw sleeve pipe section of the lock sleeve is matched with the pipe body, and there is a finger end retracting ring gap between the finger end of the lock sleeve elastic claw sleeve pipe section and the part close to the finger end and the pipe body.

The utility model is only provided with a fingertip retraction ring gap near the finger end of the elastic claw sleeve pipe section of the lock sleeve, and the rest of the elastic claw sleeve pipe section of the lock sleeve is matched with the pipe body, which greatly shortens the length of the lock sleeve claw piece. The length of the cantilever enhances the rigidity of the claw piece, which not only ensures that the lock sleeve claw piece has a certain radial elasticity after installation to realize the self-locking insertion and removal of the plug and socket, but also reduces the frictional force during the use of the connector. The deformation caused by the claw piece being squeezed by the pulling or shaking of the cable prevents the protrusion of the locking sleeve from accidentally coming out of the groove of the socket and the accidental unlocking of the connector, ensuring the reliability of the connection during the use of the connector.

Description of drawings

Fig. 1 is a structural schematic diagram of an existing self-locking plug-in type electrical connector;

Fig. 2 is a structural schematic diagram of an improved self-locking plug-in electrical connector plug;

Fig. 3 is a schematic structural view of the lock sleeve in Fig. 2;

Fig. 4 is a schematic structural diagram of an improved self-locking plug-in electrical connector.

Detailed ways

The self-locking plug-in electrical connector plug shown in Figure 2 and Figure 3 is an improvement on the basis of the electrical connector plug shown in Figure 1. The improved plug includes a tube body 1 with a stepped tube surface at one end and The stepped locking sleeve that is worn on the stepped surface of the pipe body, the locking sleeve includes the basic casing section 2 and the elastic claw casing section 7, which is arranged at one end of the basic casing section 2 and has an inner diameter smaller than the basic casing section, and the elastic claw casing section 7 There are radial protrusions 4 on the outer surface of the fingertips of each claw piece, and the elastic claw sleeve pipe section 7 of the lock sleeve is matched with the pipe body 1, and the finger end of the elastic claw sleeve pipe section 7 of the lock sleeve and the position close to the finger end There is a ring gap 3 for fingertip retraction between the pipe bodies 1, and an anti-off positioning sleeve 5 is fixed on the pipe body outside the elastic claw sleeve pipe section of the locking sleeve. The above-mentioned plug is only provided with the fingertip retraction ring gap 3 near the fingertip of its lock sleeve elastic claw tube, which greatly shortens the cantilever length of the lock sleeve claw piece, strengthens the rigidity of the claw piece, thereby reduces or eliminates the Accidental unlocking caused by small rigidity and easy deformation of claws.

Figure 4 shows a self-locking plug-and-pull electrical connector composed of a plug and a socket 9. The plug adopts the plug structure shown in Figure 2 and Figure 3. When the plug and the socket 9 are connected together, the plug on the plug lock sleeve The protrusion 4 just snaps into the groove of the inner hole of the socket 9, and axially locks the plug and the socket together to prevent them from being disengaged accidentally; when the plug needs to be pulled out, the lock sleeve is pulled outward, and the lock sleeve body protrudes 4 After being squeezed by the socket 9, the fingertips are retracted into the ring gap 3, and the protrusion 4 is disengaged from the groove of the socket, thereby releasing the axial locking of the plug socket and realizing the separation of the head seat.

Claims (2)

1. self-locking plug-type electrical connector plug, comprise that an end has the body of ladder pipe face (1) and is set on stairstepping lock tube on the body ladder pipe face, this lock tube comprises basic casing section (2) and is located at basic casing section (2) one ends, internal diameter is less than the elastic claw casing section (7) of basic casing section, elastic claw casing section (7) all has projection (4) radially on the outer surface of each calvus finger tip, on the body in the lock tube elastic claw casing section outside, be installed with anticreep positioning sleeve (5), it is characterized in that: lock tube elastic claw casing section (7) and body (1) coincide and cooperate, are provided with receipts annular space (3) in the finger tip at the finger tip of lock tube elastic claw casing section (7) with between near the position of finger tip and body (1).

2. self-locking plug-type electric connector, comprise the plug and socket (9) that to realize plugging cooperation, plug comprises that an end has the body of ladder pipe face (1) and is set on stairstepping lock tube on the body ladder pipe face, this lock tube comprises basic casing section (2) and is located at basic casing section (2) one ends, internal diameter is less than the elastic claw casing section (7) of basic casing section, elastic claw casing section (7) all has projection (4) radially on the outer surface of each calvus finger tip, this projection is at plug, after putting in place, the socket connection snaps in the groove of being located at the socket endoporus, on the body in the lock tube elastic claw casing section outside, be installed with anticreep positioning sleeve (5), it is characterized in that lock tube elastic claw casing section (7) and body (1) coincide cooperates, is provided with receipts annular space (3) in the finger tip at the finger tip of lock tube elastic claw casing section (7) with between near the position of finger tip and body (1).

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