CN212626338U

CN212626338U - Plug locking protector for vehicle

Info

Publication number: CN212626338U
Application number: CN202021755764.9U
Authority: CN
Inventors: 李牧源
Original assignee: Ningbo Maoyuan Vehicle Parts Co ltd
Current assignee: Ningbo Maoyuan Vehicle Parts Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-02-26
Anticipated expiration: 2030-08-20

Abstract

The utility model relates to a plug locking protector for vehicles, which comprises a plug body with an entrance hole, a locking ring, a wire protecting sleeve, a limiting ring and a sealing ring, wherein the plug body is provided with a fixed part; the limiting ring is axially matched in the fixing part in a sliding manner, one end of the limiting ring is provided with a limiting plate, the limiting plate is provided with a claw clamp for clamping the sealing ring, and one end of the sealing ring is in contact with the limiting plate; the locking ring is screwed on the outer ring surface of the fixed part and is provided with a locking part; one end of the wire protecting sleeve is provided with a pressing part, an arc-shaped inclined plane is arranged between the end surface of the pressing part, which is axially far away from the wire protecting sleeve, and the inner ring surface of the wire protecting sleeve, the pressing part is coaxially arranged inside the locking ring, and the wire protecting sleeve penetrates through the outside of the locking ring; when the locking ring is screwed down, the arc-shaped inclined surface driving jaw clamp deforms inwards in the radial direction, so that the sealing ring is extruded to clamp the wire harness and abut against the limiting plate. The novel wire harness locking device is simple in structure, reasonable in layout, convenient to install and capable of effectively locking and sealing the plug and the wire harness.

Description

Plug locking protector for vehicle

Technical Field

The utility model relates to a plug technical field specifically is an automobile-used plug locking protector.

Background

The automobile connector is used for erecting a communication bridge at a blocked position or among isolated and non-communicated circuits in a circuit, so that current flows, and the circuit achieves a preset function. The plug for the vehicle is one of important components of the connector for the vehicle, and can be connected with a socket on a circuit needing to be communicated through the plug, so that the communication between the circuits is realized.

The existing vehicle plug is generally provided with a wire inlet hole through which a wire harness can be accessed, but the sealing effect between the wire inlet hole and the wire harness is poor, so that the short circuit fault caused by water inlet in the plug is easy to occur; also, the wire harness is not locked with the wire inlet hole, so that it is easy to cause disconnection of the wire harness joint, thereby causing a short-circuit fault.

Therefore, how to effectively lock and seal the plug and the wiring harness so as to overcome the existing problems is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an automotive plug locking protector, which has a simple structure and is easy to install, so as to effectively lock and seal the plug and the wire harness, thereby solving the deficiencies in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a locking and protecting device for a vehicle plug comprises a plug body with a wire inlet hole, a locking ring, a wire protecting sleeve, an annular limiting ring and an annular sealing ring, wherein an annular fixing part axially extends around the periphery of the wire inlet hole on the plug body; the outer ring surface of the limiting ring is axially matched with the inner ring surface of the fixing part in a sliding manner, one end of the limiting ring integrally and radially protrudes with a limiting plate for preventing the limiting ring from sliding into the fixing part, one end of the limiting plate, far away from the fixing part, integrally and axially extends with at least three claw clamps for clamping the outer ring surface of the sealing ring, and one end of the sealing ring, close to the limiting ring, is contacted with the limiting plate; the inner ring surface of the locking ring is in threaded connection with the outer ring surface of the fixing part, and one end of the locking ring, which is axially far away from the fixing part, is integrally and radially shrunk to form a circular locking part; one end of the wire protecting sleeve is integrally and radially provided with a circular pressing part in a protruding mode, an arc inclined plane is arranged between the end face, axially far away from the wire protecting sleeve, of the pressing part and the inner ring face of the wire protecting sleeve, the pressing part is coaxially arranged inside the locking ring, and the wire protecting sleeve penetrates through the outer portion of the locking ring; when the locking ring is screwed down, the locking part is axially pressed on the pressing part, and the arc-shaped inclined surface drives the jaw clamp to deform radially inwards, so that the sealing ring is extruded to clamp the wire harness and abut against the limiting plate.

Preferably, the claw clamp is of a circular arc structure, and the inner arc surface of the claw clamp is matched with the outer ring surface of the sealing ring. The advantages are that: so that the claw clamp can be more fully contacted with the sealing ring, thereby improving the clamping effect.

Preferably, one end of the claw clamp, which is far away from the limit plate, is integrally provided with a bulge which protrudes inwards in the radial direction. The advantages are that: the bulge can avoid the outward deformation of sealing washer axial to ensure the limiting plate can be extruded to the axial to the sealing washer, thereby improves its holistic sealing performance.

Preferably, an annular groove is coaxially arranged on the outer annular surface of the limiting ring. The advantages are that: a sealing soft ring can be arranged in the annular groove, so that the sealing performance between the outer ring surface of the limiting ring and the inner ring surface of the fixing part is improved.

Preferably, the intervals between two adjacent claw clips are equal, and a cyclone-shaped structure is formed between the intervals. The advantages are that: after the locking ring is screwed, adjacent surfaces on two adjacent claw clamps are sufficiently close, so that the integral locking effect and the sealing performance are enhanced.

Preferably, the surface of the pressing part and the surface of the locking part, which are contacted with each other, are of a conical surface structure. The advantages are that: the contact area between the two is greatly increased, so that the voltage resistance of the two is improved, and the service life of the two is prolonged.

Preferably, the outer wall of the wire sheath is integrally provided with at least two buckles in a radial protruding manner, and a limiting area for fixing the locking part is formed between the buckles and the pressing part. The advantages are that: not only can avoid the assembly process to make the wire sheath drop, but also can improve the overall assembly precision.

Preferably, the outer ring surface of the locking ring is provided with an anti-slip groove. The advantages are that: facilitating rotation of the locking ring.

Preferably, the outer annular surface of the limit plate is matched with the outer annular surface of the fixing part. The advantages are that: the contact area between the limiting plate and the fixing part is increased, and therefore the matching sealing performance between the limiting plate and the fixing part is improved.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model has the advantages of simple structure, rationally distributed, it is through screwing up the locking ring, locking portion axial compresses tightly in compressing tightly the portion, convex inclined plane drive pawl presss from both sides radial inside deformation, thereby the extrusion the sealing washer makes it press from both sides tight pencil and support tight limiting plate, simple to operate, and can effectually lock and seal plug and pencil.

Drawings

FIG. 1 is a perspective view of a vehicular plug locking guard in accordance with a preferred embodiment of the present invention;

FIG. 2 is an exploded perspective view of a vehicular plug locking guard in accordance with a preferred embodiment of the present invention;

FIG. 3 is an enlarged perspective view of a preferred embodiment of the jaw clip of the present invention;

FIG. 4 is a cross-sectional view of a vehicular plug locking guard in accordance with a preferred embodiment of the present invention;

fig. 5 is a partial enlarged view at I in fig. 4.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present embodiments more clearly, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1 to 5, in an embodiment of the present invention, an automotive plug locking protection device includes a plug body 1, a locking ring 2, a wire sheath 3, a limiting ring 4 and a sealing ring 5, wherein the plug body 1 is provided with a wire inlet hole 11 and a circular fixing portion 12 extending axially around the periphery of the wire inlet hole 11, and an outer annular surface of the fixing portion 12 is provided with an external thread. The outer ring surface of the limit ring 4 is axially matched with the inner ring surface of the fixing part 12 in a sliding manner, so that the sealing between the limit ring 4 and the fixing part 12 is realized; one end of the limiting ring 4 is integrally provided with a limiting plate 41 in a radial protruding manner, and the limiting plate 41 can prevent the limiting ring 4 from sliding into the fixing part 12 integrally; the outer annular surface of the limit plate 41 is matched with the outer annular surface of the fixing part 12, and when the limit ring 4 axially presses the fixing part 12, the contact area between the limit plate 41 and the end surface of the fixing part 12 is the largest, so that the sealing property between the limit plate 41 and the fixing part 12 is improved; the integrative axial extension of the one end of keeping away from fixed part 12 on the limiting plate 41 has at least three claw clamp 42, and the claw clamp 42 centre gripping can fix sealing washer 5 on the outer anchor ring of sealing washer 5, and in addition, the one end of keeping away from fixed part 12 on the limiting plate 41 can be spacing to sealing washer 5 by the axial, prevents that sealing washer 5 from getting into the inside of spacing ring 4. An internal thread is arranged on the inner ring surface of the locking ring 2, and the locking ring 2 is in threaded connection with the external thread on the fixing part 12 through the internal thread on the locking ring; an anti-slip groove 22 is formed in the outer ring surface of the locking ring 2, and the locking ring 2 can be conveniently rotated through the anti-slip groove 22; and, the locking ring 2 is integrally radially contracted to form a ring-shaped locking part 21 at one end axially far from the fixing part 12. A circular pressing part 31 protrudes radially from one end of the wire sheath 3, and an arc inclined plane 32 is arranged between the end surface of the pressing part 31 axially far away from the wire sheath 3 and the inner annular surface of the wire sheath 3; the pressing portion 31 is coaxially disposed inside the locking ring 2, and the grommet penetrates to the outside of the locking ring 2 through the inner annular surface of the locking portion 21. When the locking ring 2 is screwed, the locking part 21 gradually and axially extrudes the compressing part 31 to enable the compressing part 31 to move axially towards the direction of the fixing part 12, and the arc-shaped inclined surface 32 on the compressing part 31 drives the claw clamp 42 to deform radially inwards, so that the sealing ring 5 is extruded to be clamped on the wire harness, and the locking of the wire harness is completed; and the seal ring 5 is deformed during the extrusion process, so as to closely contact the limiting plate 41 and the wire harness, thereby forming a seal.

Wherein, the claw clamp 42 is of a circular arc structure, the inner arc surface of the claw clamp 42 is matched with the outer ring surface of the sealing ring 5, and the claw clamp 42 can be more fully contacted with the sealing ring 5, thereby improving the clamping effect. In addition, the one end that keeps away from limiting plate 41 on the claw presss from both sides 42 is integrative to be radially inwards projected and has the bulge 43, and the bulge 43 can carry out spacingly to sealing washer 5, avoids sealing washer 5 axial outside (the axial direction of keeping away from limiting plate 41 promptly) to take place deformation to make sealing washer 5 fully contact with limiting plate 41, and then improve the leakproofness between sealing washer 5 and the limiting plate 41. Further, an annular groove 44 is coaxially provided on the outer circumferential surface of the retainer ring 4, and a soft seal ring is fitted into the annular groove 44, whereby the sealing property between the outer circumferential surface of the retainer ring 4 and the inner circumferential surface of the fixing portion 12 can be improved.

As shown in fig. 3, the adjacent two claw clips 42 are equally spaced and form a cyclone-like structure therebetween, and when the locking ring 2 is tightened to deform the claw clips 42 radially inward, the adjacent surfaces of the adjacent two claw clips 42 are sufficiently close to each other, so as to enhance the overall locking effect and the sealing performance.

As shown in fig. 5, the contact surface between the pressing portion 31 and the locking portion 21 is a tapered surface structure. On one hand, the conical surface structure can fully increase the contact area between the pressing part 31 and the locking part 21 (the larger the contact area is, the smaller the pressure born in unit area is), thereby improving the pressure resistance of the pressing part and the locking part and further prolonging the service life of the pressing part and the locking part; on the other hand, under the effect of the conical surface structure, the pressure of the locking portion 21 on the pressing portion 31 can be decomposed into a pressure along the axial direction of the pressing portion 31 and a pressure along the radial direction of the pressing portion 31, the pressure in the axial direction is used for driving the pressing portion 31 to move in the axial direction, and the pressure in the radial direction is used for enabling the pressing portion 31 to be always kept in the central arrangement, so that the positioning accuracy between the circular arc-shaped inclined surface 32 and the claw clamp 42 can be improved. In other words, if there is no pressure in the radial direction, once there is a gap between the outer circumferential surface of the grommet 3 and the inner circumferential surface of the locking ring 2, the pressing portion 31 is easily displaced in the radial direction during the rotation of the locking ring 2, thereby greatly reducing the positioning accuracy between the circular arc-shaped inclined surface 32 and the claw grip 42. In addition, four buckles 33 (at least two buckles 33) are integrally and radially protruded on the outer wall of the wire sheath 3, the locking part 21 can be limited and fixed between the buckles 33 and the pressing part 31 through the four buckles 33, so that the connection between the wire sheath 3 and the locking ring 2 can be realized, and the wire sheath 3 can be prevented from falling off in the assembling process; further, if the hook 33 is not provided, the grommet 3 needs to be held by hand while rotating the lock ring 2, and if the high coaxiality between the pressing portion 31 and the lock ring 2 is not maintained during the holding operation, the pressing portion 31 is easily attached in a skewed manner, thereby reducing the mounting accuracy.

The working principle is as follows: firstly, a wire harness sequentially passes through a wire protecting sleeve, a locking ring 2, a sealing ring 5, a limiting ring 4, a fixing part 12 and a wire inlet hole 11, and is led into the plug body 1 to complete wiring; then, the retainer ring 4 is inserted into the fixing portion 12, and the seal ring 5 is prevented between the claw clips 42; finally, the locking ring 2 is rotated to be screwed on the fixing part 12, after the locking ring 2 is screwed (as shown in fig. 5), the locking part 21 axially presses the pressing part 31, the pressing part 31 acts on the claw clamp 42 through the arc-shaped inclined surface 32, so that the claw clamp 42 is radially inwards deformed, and is clamped on the wire harness, and the fixing of the wire harness is completed; further, the seal ring 5 is deformed in the direction of the stopper plate 41 in the axial direction by the nipples 42 (wherein the nipples 42 are sufficiently in contact with the outer circumferential surface of the seal ring 5 and the wire harness is sufficiently in contact with the inner circumferential surface of the seal ring 5 to restrict the radial deformation of the seal ring 5, and the protrusions 43 of the nipples 42 restrict the deformation of the seal ring 5 in the direction of the grommet 3 in the axial direction), and the seal ring 5 is sufficiently brought into contact with the stopper plate 41 to form a seal between the seal ring 5 and the stopper plate 41 and between the seal ring 5 and the wire harness.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A locking and protecting device for a vehicle plug comprises a plug body with a wire inlet hole, and is characterized by further comprising a locking ring, a wire protecting sleeve, an annular limiting ring and an annular sealing ring, wherein an annular fixing part axially extends integrally on the periphery of the plug body around the wire inlet hole; the outer ring surface of the limiting ring is axially matched with the inner ring surface of the fixing part in a sliding manner, one end of the limiting ring integrally and radially protrudes with a limiting plate for preventing the limiting ring from sliding into the fixing part, one end of the limiting plate, far away from the fixing part, integrally and axially extends with at least three claw clamps for clamping the outer ring surface of the sealing ring, and one end of the sealing ring, close to the limiting ring, is contacted with the limiting plate; the inner ring surface of the locking ring is in threaded connection with the outer ring surface of the fixing part, and one end of the locking ring, which is axially far away from the fixing part, is integrally and radially shrunk to form a circular locking part; one end of the wire protecting sleeve is integrally and radially provided with a circular pressing part in a protruding mode, an arc inclined plane is arranged between the end face, axially far away from the wire protecting sleeve, of the pressing part and the inner ring face of the wire protecting sleeve, the pressing part is coaxially arranged inside the locking ring, and the wire protecting sleeve penetrates through the outer portion of the locking ring; when the locking ring is screwed down, the locking part is axially pressed on the pressing part, and the arc-shaped inclined surface drives the jaw clamp to deform radially inwards, so that the sealing ring is extruded to clamp the wire harness and abut against the limiting plate.

2. The vehicular plug locking protector according to claim 1, wherein the claw clip has a circular arc-shaped configuration, and an inner arc surface of the claw clip is matched with an outer annular surface of the seal ring.

3. The vehicular plug locking guard of claim 2 wherein an end of the clip distal from the retainer plate is integrally and radially inwardly bulged to form a projection.

4. The vehicular plug lock protector according to claim 1, wherein an annular groove is coaxially provided on an outer circumferential surface of the retainer ring.

5. A vehicular plug locking guard according to claim 1 wherein the spacing between adjacent ones of said jaws is equal and said spacing defines a cyclone-like configuration therebetween.

6. The locking and protecting device for vehicle plug as claimed in claim 1, wherein the surface of the pressing portion and the locking portion contacting each other is a tapered surface structure.

7. The locking and protecting device for the plug of the vehicle as claimed in claim 1, wherein at least two buckles are integrally and radially protruded on the outer wall of the wire protecting sleeve, and a limit region for fixing the locking part is formed between the buckles and the pressing part.

8. The vehicular plug locking guard of claim 1, wherein an outer circumferential surface of the locking ring is provided with a slip prevention groove.

9. The vehicular plug lock guard of claim 1, wherein the outer circumferential surface of the retainer plate is matched with the outer circumferential surface of the retainer portion.