Connector with spiral locking structure

Abstract

The utility model belongs to the field of electric connectors, and particularly relates to a connector with a spiral locking mechanism, which is reliable in locking and not easy to loosen. The connector with the spiral locking structure comprises a first connector shell and a second connector shell, at least one spiral groove is formed in the peripheral surface of the first connector shell, the connector further comprises a locking shell, the locking shell is connected to the second connector shell, at least one locking protrusion is arranged on the inner wall of the locking shell, and the locking protrusion is connected with the first connector shell and the second connector shell. The locking shell is in spiral fit with the first connecting shell, the locking protrusion is in sliding fit with the interior of the spiral groove, and a retaining boss is arranged on the bottom face, close to the tail end of the spiral groove, of the spiral groove. The utility model designs the connector with the spiral locking mechanism, which is easy to install, reliable in locking and not easy to break away.

Description

Technical Field

[0001] The utility model belongs to the field of electric connectors, and in particular relates to a connector with a spiral locking mechanism which is reliable in locking and not easy to loosen. Background Art

[0002] An electrical connector is a common electronic device that realizes the function of current and / or signal transmission through the contact of connecting terminals. An electrical connector generally includes a male connector and a female connector, each of which has a connecting terminal built in. By plugging and unplugging the male connector and the female connector, the connecting terminals between the male connector and the female connector are connected or disconnected to realize the conduction or disconnection of current and / or signal transmission.

[0003] After the connectors are plugged in, under harsh working conditions such as the severe vibration of a chainsaw motor, the cable and its docking connector will cause resonance at the same frequency, which may easily lead to the risk of the connector loosening and power failure. Summary of the invention

[0004] In view of the deficiencies of the prior art, the utility model designs a connector with a spiral locking mechanism which is easy to install, reliable in locking and not easy to break free.

[0005] The technical solution of the utility model is as follows:

[0006] A connector with a spiral locking structure comprises a first connector shell and a second connector shell, wherein the outer circumferential surface of the first connector shell is provided with at least one spiral groove, and further comprises a locking shell, which is connected to the second connector shell and has at least one locking protrusion on its inner wall, wherein the locking shell is spirally fitted on the first connection shell, the locking protrusion is slidably fitted in the spiral groove, and a stop boss is provided on the bottom surface of the spiral groove near the end of the spiral groove.

[0007] Furthermore, the first connector housing is provided with two spiral grooves, and the inner wall of the corresponding locking housing is provided with two locking protrusions.

[0008] Furthermore, a first inclined surface and a second inclined surface are respectively provided on both sides of the stop boss, the first inclined surface is located on the side of the spiral groove screwing in direction, and the second inclined surface is located on the side of the spiral groove screwing out direction.

[0009] Furthermore, the angle between the second inclined surface and the tangent direction of the bottom surface of the spiral groove is smaller than the angle between the first inclined surface and the tangent direction of the bottom surface of the spiral groove.

[0010] Furthermore, the locking housing is provided with a plurality of elastic expansion and contraction grooves along the axial direction.

[0011] Furthermore, a hexagonal portion is provided at one end of the outer peripheral surface of the locking shell.

[0012] Furthermore, the hexagonal portion is in the shape of a plum blossom.

[0013] In summary, the utility model has the following beneficial effects:

[0014] The utility model designs a method of utilizing the cooperation of the spiral groove and the locking protrusion to realize the connection between the spiral shell and the second shell, thereby realizing axial locking between the first shell and the second shell. Furthermore, the movement of the locking protrusion in the spiral groove is limited by the set back-stop boss. During use, the spiral shell is not easy to loosen and has the function of back-stopping, thereby ensuring that the first connector shell and the second connector shell have a more stable docking performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 It is an explosion diagram of the utility model;

[0017] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0018] Figure 4 is a three-dimensional schematic diagram of a locking housing;

[0019] In the figure, 1 is a first connector housing, 10 is a spiral groove, 11 is a stop boss, 110 is a first inclined surface, and 111 is a second inclined surface.

[0020] 2 is a second connector housing,

[0021] 3 is a locking housing, 30 is a locking protrusion, 31 is a hexagonal portion, and 32 is an elastic expansion slot. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0023] It should be noted that when an element is referred to as being "disposed on" or "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is referred to as being "fixed on" another element, or "fixedly connected" to another element, they may be fixed in a detachable manner or in a non-detachable manner. When an element is considered to be "connected" or "rotatably connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used are for illustrative purposes only and do not represent the only implementation method.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to restrict the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] The terms “first”, “second”, “third” and the like in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0026] The utility model designs a plug-in connector, and realizes axial locking between a first connector shell and a second connector shell by means of a spiral locking method. Since factors such as high-frequency vibration exist in scenarios where the connectors are used, a stop boss is provided to limit the spiral locking, thereby limiting the movement of the locking boss in the limit groove, thereby realizing the stop function.

[0027] For more information, see Figure 1As shown, a connector with a spiral locking structure includes a first connector housing 1 and a second connector housing 2, wherein the outer circumferential surface of the first connector housing 1 is provided with at least one spiral groove 10, and further includes a locking housing 3, the locking housing 3 is connected to the second connector housing 2, the second connector housing is provided with a connecting section, the upper circumferential surface of the connecting section is provided with a groove, the locking housing fits in the groove of the connecting section, and can slide to a certain extent in the axial direction, the two ends of the groove face the locking housing for axial limitation, and the inner wall of the locking housing 3 is provided with at least one locking protrusion 30 The locking shell 3 is spirally fitted on the first connecting shell 1, and the locking protrusion 30 is slidably fitted in the spiral groove 10. A backstop boss 11 is provided on the bottom surface of the spiral groove 10 near the end of the spiral groove; when the locking shell is locked with the first connector shell, the user needs to apply additional force to make the locking protrusion on the locking shell pass over the backstop boss, and the locking protrusion is located in the locking groove on the rear side of the backstop boss. In the absence of external force, the backstop boss prevents the locking shell from unlocking and loosening from the first connector shell. The connector has a backstop function to achieve more stable docking performance.

[0028] The first connector shell is provided with two spiral grooves 10, and the corresponding inner wall of the locking shell is provided with two locking protrusions 30. The cooperation of multiple spiral grooves and locking protrusions increases the contact area between the first connector shell and the locking shell. When the first connector shell and the second connector shell are subjected to pulling force in the axial direction, the spiral grooves and the locking protrusions can provide sufficient strength. Preferably, additional locking protrusions can be added. Specifically, two more locking protrusions are added to the locking shell, and two locking protrusions are respectively provided in each spiral groove, so as to further improve the axial connection strength.

[0029] See also Figure 3 As shown, the two sides of the stop boss 11 are respectively provided with a first bevel 110 and a second bevel 111, the first bevel is located on the side of the spiral groove screwing in direction, and the second bevel is located on the side of the spiral groove screwing out direction. The first bevel and the second bevel are provided to play a guiding role, so that the locking boss can more easily pass over the stop boss, reducing the wear of the locking protrusion and the stop boss during the movement, improving the use experience and extending the service life of the locking mechanism.

[0030] The angle between the second bevel 111 and the tangent direction of the bottom surface of the spiral groove is smaller than the angle between the first bevel 110 and the tangent direction of the bottom surface of the spiral groove. Specifically, the slope of the first bevel is greater than the slope of the second bevel. The slope of the first bevel is large, and when the locking protrusion is screwed in, the resistance between the locking protrusion and the stop boss is small. The slope of the second bevel is small, and when the locking protrusion is screwed out, the resistance between the locking protrusion and the stop boss is large, and the rotating shell is not easy to fall out, thereby ensuring the stop boss's ability to stop, and it is not easy to get loose.

[0031] See also Figure 4 As shown, the locking shell 3 is axially provided with a plurality of elastic expansion grooves 32, and the elastic expansion grooves make the surface of the locking shell become a plurality of radially deformable units, and the locking shell is locked with the first connector shell. When the locking protrusion needs to pass over the stop boss, the locking shell can be radially deformed to reduce the friction between the locking protrusion and the stop boss, thereby reducing the wear of the locking protrusion and the stop boss and extending the service life of the connector.

[0032] A hexagonal portion 31 is provided at one end of the outer circumference of the locking housing 3. The hexagonal portion provides a drivable portion for convenient operation with a wrench.

[0033] The hexagonal portion 31 is in the shape of a plum blossom, and the plum blossom shape design makes it convenient for users to drive by hand.

[0034] In summary, the utility model has the following beneficial effects:

[0035] The utility model designs a method of utilizing the cooperation of the spiral groove and the locking protrusion to realize the connection between the spiral shell and the second shell, thereby realizing axial locking between the first shell and the second shell. Furthermore, the movement of the locking protrusion in the spiral groove is limited by the set back-stop boss. During use, the spiral shell is not easy to loosen and has the function of back-stopping, thereby ensuring that the first connector shell and the second connector shell have a more stable docking performance.

[0036] Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

Claims

1. A connector with a spiral locking structure, comprising a first connector housing and a second connector housing, characterized in that: The outer circumferential surface of the first connector shell is provided with at least one spiral groove, and also includes a locking shell, the locking shell is connected to the second connector shell, and the inner wall of the locking shell is provided with at least one locking protrusion, the locking shell is spirally fitted on the first connecting shell, the locking protrusion is slidably fitted in the spiral groove, and a stop boss is provided on the bottom surface of the spiral groove near the end of the spiral groove.

2. The connector with a spiral locking structure according to claim 1, characterized in that: The first connector housing is provided with two spiral grooves, and the inner wall of the corresponding locking housing is provided with two locking protrusions.

3. The connector with a spiral locking structure according to claim 1, characterized in that: A first inclined surface and a second inclined surface are respectively disposed on both sides of the stop boss, wherein the first inclined surface is located on the side of the spiral groove screwing in direction, and the second inclined surface is located on the side of the spiral groove screwing out direction.

4. The connector with a spiral locking structure according to claim 3, characterized in that: The angle between the second inclined surface and the tangent direction of the bottom surface of the spiral groove is smaller than the angle between the first inclined surface and the tangent direction of the bottom surface of the spiral groove.

5. The connector with a spiral locking structure according to any one of claims 1 to 4, characterized in that: The locking housing is provided with a plurality of elastic expansion and contraction grooves along the axial direction.

6. The connector with a spiral locking structure according to claim 5, characterized in that: A hexagonal portion is provided at one end of the outer peripheral surface of the locking shell.

7. The connector with a spiral locking structure according to claim 6, characterized in that: The hexagonal portion is in the shape of a plum blossom.

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