Fakra connector

Abstract

The utility model relates to the technical field of electric connectors, in particular to a fakra connector which comprises a shell and a locking piece, the locking piece is provided with a pre-assembling structure and a locking structure, the pre-assembling structure is a pre-assembling elastic arm, the pre-assembling elastic arm is provided with a pre-assembling clamping portion used for being matched with the shell in a clamping mode when the locking piece is pre-assembled on the shell, and the locking structure is arranged on the pre-assembling clamping portion. The locking structure is a locking elastic arm, a locking clamping part is arranged on the locking elastic arm, and the locking clamping part is used for being clamped and matched with the shell when the locking piece and the shell are locked; the pre-assembling clamping part on the pre-assembling elastic arm is in clamping fit with the shell when the locking piece is pre-assembled, and the locking clamping part on the locking elastic arm is in clamping fit with the shell when the locking piece is locked, so that the clamping fit position of the locking piece and the shell is elastic, the clamping structure is not easy to damage when the locking piece is disassembled, and the disassembly of the locking piece is facilitated. The tool is suitable for the operation that the locking piece is disassembled and then installed.

Description

Technical Field

[0001] The utility model relates to the technical field of electric connectors, in particular to a Fakra connector. Background Art

[0002] The mini Fakra high-frequency communication connector is a coaxial signal transmission connector, which is mainly suitable for the needs of autonomous driving and vehicle networking. It has a high degree of integration and can realize multiple high-frequency signal transmission channels, among which the most mainstream is four channels. For example, a Mini Fakra automotive connector disclosed in the Chinese utility model patent with authorization announcement number CN212783920U includes a plastic shell, which is a shell. The front end surface of the plastic shell is provided with a through hole connected to the outer conductor, and the rear end surface of the plastic shell is provided with a docking tube for connecting to the outer conductor. The front and rear directions are the plugging directions of the connector and the adapter connector. The left and right sides of the plastic shell are symmetrically provided with card slots docking with the buckle. The outer conductor belongs to the terminal component of the connector. The outer conductor is inserted into the plastic shell, and then the buckle is buckled. While the outer conductor and the plastic shell are interfered and positioned using the elastic arm buckle, the buckle will be locked for a second time to increase its reliability. The buckle constitutes a locking piece for secondary locking, the buckle has a fixing part and a connecting part, the connecting part is the main body of the buckle, the connecting part is provided with a first clamping block, the fixing part constitutes an elastic arm, the fixing part is provided with a second clamping block, when installing the buckle, the first clamping block and the second clamping block can be clamped in the corresponding clamping grooves of the plastic shell, the clamping blocks constitute the clamping part, and the first clamping block is the forced clamping part, and the second clamping block is the clamping part on the elastic arm.

[0003] Since the housing and locking piece of the Fakra connector are two parts, in order to facilitate assembly and loading, the locking piece is currently pre-installed on the housing. After the terminal component is inserted into the housing along the front-to-back direction and snapped with the buckle on the housing to achieve a primary locking, the locking piece is finally assembled in place to achieve a secondary locking. For the connector of the above-mentioned structure, it is usually achieved by pre-installing the locking piece on the housing by snapping with the housing using the snapping parts on the left and right elastic arms. At this time, the pre-installation of the locking piece does not affect the installation of the terminal component into the housing. Then, after the terminal component is installed, the locking piece is pressed again, and the forced snapping part on the front side wall of the locking piece is snapped with the housing to achieve the final locking. The left and right elastic arms and their snapping parts constitute a pre-installed structure, and the forced snapping parts constitute a locking structure. During the use and assembly of the connector, it is sometimes necessary to remove the locking piece. The pre-installed structure is a spring arm structure, which can be removed smoothly. However, the side wall of the forced clamping part of the locking piece is not elastic. After the locking piece is assembled, when it needs to be disassembled again, the forced clamping part is weak and easily damaged when the locking piece is pulled. It cannot be disassembled and then installed, and the parts are scrapped, causing waste. Utility Model Content

[0004] The utility model aims to provide a Fakra connector to solve the problem that the locking piece of the current Fakra connector is easily damaged when it is disassembled after being locked.

[0005] The technical solution of the Fakra connector of the utility model is:

[0006] A Fakra connector comprises a shell and a locking piece, wherein the locking piece has a pre-installed structure and a locking structure, wherein the pre-installed structure is a pre-installed spring arm, and the pre-installed spring arm is provided with a pre-installed clamping part used for clamping and cooperating with the shell when the locking piece is pre-installed on the shell, and the locking structure is a locking spring arm, and the locking spring arm is provided with a locking clamping part, and the locking clamping part is used for clamping and cooperating with the shell when the locking piece and the shell are locked.

[0007] Furthermore, the pre-loading arm is also provided with a secondary clamping portion for clamping and cooperating with the shell when the locking piece and the shell are locked.

[0008] Furthermore, the pre-installed clamping portion and the secondary clamping portion are both convex structures.

[0009] Furthermore, the pre-installed clamping portion and the secondary clamping portion are spaced apart in the overhanging direction of the pre-installed spring arm, the pre-installed clamping portion and the secondary clamping portion form a limiting groove, and the shell has a pre-installed clamping fitting portion for clamping into the limiting groove.

[0010] Furthermore, the clamping force of the secondary clamping portion is smaller than the clamping force of the pre-installed clamping portion.

[0011] Furthermore, the connector has a plug-in direction and a first direction and a second direction perpendicular to the plug-in direction, the locking piece is installed on the side of the shell in the first direction, the locking spring arm is arranged on the side of the locking piece in the second direction, and the pre-loaded spring arm is arranged on the side of the locking piece in the plug-in direction.

[0012] Furthermore, pre-loaded spring arms are provided on both sides of the locking member in the plugging direction.

[0013] Furthermore, the locking member is provided with a shifting convex portion, the shell is provided with a matching cavity for the shifting convex portion to be inserted, the shifting convex portion is provided with a convex rib, and the convex rib is interference fit with the cavity wall of the matching cavity.

[0014] Furthermore, the locking member is provided with a shifting protrusion for inserting into the shell, the overhanging height of the pre-loading arm is lower than the protruding height of the shifting protrusion, and the locking member is provided with a groove between the shifting protrusion and the pre-loading arm.

[0015] Furthermore, the locking clamping portion is a protruding structure, and a locking clamping groove for the locking clamping portion to be clamped is provided on the shell.

[0016] Beneficial effect: The utility model is improved on the basis of the Fakra connector in the prior art. The pre-installed structure and the locking structure of the Fakra connector are both set as elastic arm structures, and the pre-installed clamping part on the pre-installed elastic arm is used to clamp and cooperate with the shell when the locking piece is pre-installed, and the locking clamping part on the locking elastic arm is used to clamp and cooperate with the shell when the locking piece is locked. In this way, the clamping joint between the locking piece and the shell is elastic, and the clamping structure is not easily damaged when the locking piece is disassembled, which is suitable for the operation of reinstalling the locking piece after disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the Fakra connector embodiment of the present utility model when the housing and the locking member are separated;

[0018] Figure 2 for Figure 1 A schematic diagram of a locking member in FIG.

[0019] Figure 3 It is a schematic diagram of the cooperation between the locking spring arm of the locking member and the housing of the Fakra connector embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the cooperation between the pre-loaded spring arm of the locking member and the housing of the Fakra connector embodiment of the present utility model.

[0021] In the figure: 1, shell; 11, embedded groove; 12, locking slot; 13, front snap-fitting part; 14, rear snap-fitting part; 2, locking piece; 20, convex rib; 21, locking spring arm; 211, locking snap-fitting protrusion; 22, front pre-loading arm; 221, front pre-loading snap-fitting protrusion; 222, secondary snap-fitting protrusion; 23, rear pre-loading arm; 231, rear pre-loading snap-fitting protrusion; 24, gear convex part. DETAILED DESCRIPTION

[0022] The Fakra connector of the utility model is configured such that both the pre-installation structure and the locking structure are configured as elastic arm structures, and the pre-installation clamping portion on the pre-installation elastic arm is used to clamp and cooperate with the shell when the locking piece is pre-installed, and the locking clamping portion on the locking elastic arm is used to clamp and cooperate with the shell when the locking piece is locked. In this way, the clamping joint between the locking piece and the shell is elastic, and the clamping structure is not easily damaged when the locking piece is disassembled, so the utility model is suitable for the operation of reinstalling the locking piece after disassembly.

[0023] Embodiment of the Fakra connector of the present utility model:

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the Fakra connector includes a housing 1, a locking member 2 and a terminal component. The terminal component is not shown in the figure. The housing 1 is provided with a terminal installation cavity that passes through from front to back. The terminal component is inserted into the terminal installation cavity from back to front. The front end of the housing 1 is used for plugging with the adapter connector. The plugging direction of the Fakra connector is the front-to-back direction, and the plugging end is the front end. The housing 1 is a plastic housing 1. After the terminal component is inserted into the housing 1, the plastic shell spring arm in the housing 1 will be stuck in the corresponding groove of the terminal component, which has an anti-retraction function for the terminal component. In order to ensure reliable anti-retraction, the plastic shell spring arm is limited by installing a locking member 2 on the housing 1. The locking member 2 can prevent the plastic shell spring arm from bouncing up to ensure reliable plugging of the plastic shell spring arm with the terminal component.

[0025] There are two locking members 2, which are respectively arranged on the upper and lower sides of the housing 1. The upper and lower directions are the first directions. The upper and lower sides of the housing 1 are provided with a card-mounting cavity for the locking member 2 to be adapted and mounted. The locking member 2 includes a main body and a pre-installed structure and a locking structure arranged on the main body. The pre-installed structure is used to pre-install the locking member 2 on the housing 1 before installing the terminal component, so as to facilitate the overall movement. After the terminal component is installed on the housing 1, the locking member 2 is installed in place on the housing 1 through the locking structure, which plays a role in locking and limiting the plastic shell elastic arm and the terminal component.

[0026] The preloading structure is a preloading arm. There are two preloading arms, which are respectively arranged on the front and rear sides of the locking member 2. The two preloading arms are respectively a front preloading arm 22 and a rear preloading arm 23. The front preloading arm 22 and the rear preloading arm 23 are both cantilevered in the up and down directions based on the main body of the locking member 2 and cantilevered toward the inner cavity of the shell 1. The preloading arm is provided with a preloading clamping portion for clamping and cooperating with the shell 1 when the locking member 2 is preloaded on the shell 1. The preloading clamping portion of the front preloading arm 22 is a front preloading clamping protrusion 221, and the preloading clamping portion of the rear preloading arm 23 is a rear preloading clamping protrusion 231. The front preloading clamping protrusion 221 and the rear preloading clamping protrusion 231 are respectively arranged on the opposite sides of the front preloading arm 22 and the rear preloading arm 23, and the protrusion directions of the front preloading clamping protrusion 221 and the rear preloading clamping protrusion 231 are opposite to each other. The front and rear sides of the card-fitting cavity on the side of the shell 1 are respectively provided with a front card-fitting portion 13 and a rear card-fitting portion 14. The front card-fitting portion 13 is used to card-fit with the front pre-installed card-fitting protrusion 221, and the rear card-fitting portion 14 is used to card-fit with the rear pre-installed card-fitting protrusion 231.

[0027] The front pre-loading arm 22 is also provided with a secondary clamping portion for clamping and cooperating with the housing 1 when the locking member 2 is locked with the housing 1. The secondary clamping portion is a secondary clamping protrusion 222. The secondary clamping protrusion 222 is consistent with the protrusion direction of the front pre-loading clamping protrusion 221. The front pre-loading clamping protrusion 221 and the secondary clamping protrusion 222 are arranged at intervals in the overhang direction of the front pre-loading arm 22. The secondary clamping protrusion 222 is closer to the front pre-loading arm 221 than the front pre-loading clamping protrusion 221. 2, the protrusion height of the secondary clamping protrusion 222 is smaller than the protrusion height of the front pre-installed clamping protrusion 221, so that the clamping force of the secondary clamping part during the clamping installation is smaller than the clamping force of the pre-installed clamping part during the clamping installation, and a limiting groove is formed between the front pre-installed clamping protrusion 221 and the secondary clamping protrusion 222. When the locking member 2 is in the pre-installed state, the front clamping fitting portion 13 is clamped into the limiting groove, and the front clamping fitting portion 13 constitutes a pre-installed clamping fitting portion for clamping into the limiting groove.

[0028] The locking structure is a locking spring arm 21. There are two locking spring arms 21, which are respectively arranged on the left and right sides of the locking member 2. The left and right directions constitute the second direction. The locking spring arm 21 is arranged on the side of the locking member 2 in the second direction. The locking spring arm 21 is cantilevered in the up and down directions and cantilevered toward the inner cavity of the shell 1. A locking clamping part is provided on the locking spring arm 21. The locking clamping part is used to clamp and cooperate with the shell 1 when the locking member 2 and the shell 1 are locked. The locking clamping part is a locking clamping protrusion 211. The shell 1 is provided with a locking clamping groove 12 for the locking clamping protrusion 211 to be clamped.

[0029] A shifting convex portion 24 is provided at the middle position of the main body of the locking member 2 in the left-right direction, and two locking elastic arms 21 are respectively located at the left and right sides of the shifting convex portion 24. The shifting convex portion 24 is located at the side of the main body of the locking member 2 facing the inner cavity of the housing 1. The shifting convex portion 24 has a front portion connected to the main body and a rear portion cantilevered out of the main body. The front pre-loading elastic arm 22 corresponds to the shifting convex portion 24 front and back. The front pre-loading elastic arm 22 is arranged at intervals at the front side of the shifting convex portion 24. The cantilever height of the front pre-loading elastic arm 22 is lower than the protrusion height of the shifting convex portion 24. A groove is also provided on the main body of the locking member 2 between the shifting convex portion 24 and the front pre-loading elastic arm 22 to ensure the elasticity of the front pre-loading elastic arm 22. The rear pre-loading elastic arm 23 is arranged at the rear end of the shifting convex portion 24, and the elastic arm structure is formed by arranging a slot at the rear of the shifting convex portion 24. The card-mounting cavity of the shell 1 includes an embedding groove 11. When the locking member 2 is locked with the shell 1, the rear part of the shifting protrusion 24 of the locking member 2 is inserted into the embedding groove 11. The embedding groove 11 constitutes a matching cavity. The left and right sides of the shifting protrusion 24 are respectively provided with ribs 20. The ribs 20 are interference fit with the left and right opposite side groove walls of the embedding groove 11 to improve the assembly stability of the locking member 2.

[0030] For the clamping process of the locking member 2 and the housing 1, Figure 3 and Figure 4 , where for convenience of representation, Figure 3 and Figure 4 In each of the figures, one locking member 2 is in a pre-installed state and the other locking member 2 is in a locked state. When the locking member 2 and the shell 1 are pre-installed, the front pre-installed snap-in protrusion 221 of the front pre-installed spring arm 22 and the rear pre-installed snap-in protrusion 231 of the rear pre-installed spring arm 23 are respectively inserted into the shell 1, and the front pre-installed snap-in protrusion 221 forms a snap-in fit with the front snap-in fitting portion 13, and the rear pre-installed snap-in protrusion 231 forms a snap-in fit with the rear snap-in fitting portion 14, and the front snap-in fitting portion 13 enters between the front pre-installed snap-in protrusion 221 and the secondary snap-in protrusion 222, so that the locking member 2 is in a pre-installed state and is prevented from falling out by the pre-installed structure. At this time, the locking snap-in protrusion 211 of the locking spring arm 21 does not enter the locking snap-in groove on the shell 1. 12, and does not affect the terminal component from penetrating into the housing 1. After the terminal component is installed into the housing 1, the plastic shell spring arm of the housing 1 will be inserted into the corresponding groove of the terminal component. Finally, the locking member 2 is pressed down, and the locking clamping protrusion 211 on the locking spring arm 21 of the locking member 2 is clamped into the locking clamping groove 12, which plays a locking effect to prevent the plastic shell spring arm from bouncing up. At the same time, the gear convex portion 24 enters the housing 1, and the convex rib 20 on the gear convex portion 24 is tightly matched with the embedded groove 11. The secondary clamping protrusion 222 on the front pre-loaded spring arm 22 passes over the front clamping fitting portion 13 and enters the housing 1, and forms a clamping fit with the front clamping fitting portion 13 to form a stop limit for the locking member 2. In this way, the cooperation of various places together plays a role in preventing the locking member 2 from falling off. Since both the pre-installed structure and the locking structure are clamped by the spring arm, they are not easy to be damaged during disassembly, and the reliability is high.

[0031] In other implementations, the secondary clamping portion may not be provided, so that the structure of the front pre-loading arm is the same as the structure of the rear pre-loading arm.

[0032] In other embodiments, the pre-loading clamping portion and the secondary clamping portion on the front pre-loading arm may also be grooves, and correspondingly, the front clamping mating portion is a clamping protrusion, and the clamping protrusion is adapted to be clamped with the groove.

[0033] In other implementations, secondary clamping parts may also be provided on both the front pre-loading arm and the rear pre-loading arm.

[0034] In other embodiments, the front snap-fitting portion may be configured as a groove, and the groove is used to snap-fit ​​with the pre-installed snap-fitting portion and the secondary snap-fitting portion, and the groove wall of the groove may limit the pre-installed snap-fitting portion or the secondary snap-fitting portion.

[0035] In other embodiments, the protrusion height of the secondary clamping portion on the front pre-loading arm may also be consistent with the protrusion height of the pre-loading clamping portion.

[0036] In other implementations, the pre-loading spring arm may be arranged on the side of the locking member in the left-right direction, and the locking spring arm may be arranged on the side of the locking member in the front-back direction.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A Fakra connector, comprising a housing and a locking member, wherein the locking member has a pre-installed structure and a locking structure, wherein the pre-installed structure is a pre-installed spring arm, and the pre-installed spring arm is provided with a pre-installed clamping portion for clamping and cooperating with the housing when the locking member is pre-installed on the housing, wherein: The locking structure is a locking spring arm, on which a locking clamping portion is provided, and the locking clamping portion is used to clamp and cooperate with the shell when the locking member is locked with the shell.

2. The fakra connector according to claim 1, characterized in that: The pre-loading arm is also provided with a secondary clamping portion for clamping and cooperating with the shell when the locking piece and the shell are locked.

3. The fakra connector according to claim 2, characterized in that: Both the pre-installed clamping portion and the secondary clamping portion are convex structures.

4. The fakra connector according to claim 3, characterized in that: The pre-installed clamping part and the secondary clamping part are arranged at intervals in the overhanging direction of the pre-installed spring arm, the pre-installed clamping part and the secondary clamping part form a limiting groove, and the shell has a pre-installed clamping matching part for clamping into the limiting groove.

5. The fakra connector according to claim 2, 3 or 4, characterized in that: The clamping force of the secondary clamping portion is smaller than the clamping force of the pre-installed clamping portion.

6. The fakra connector according to any one of claims 1 to 4, characterized in that: The connector has a plug-in direction and a first direction and a second direction perpendicular to the plug-in direction. The locking piece is installed on the side of the shell in the first direction, the locking spring arm is arranged on the side of the locking piece in the second direction, and the pre-loaded spring arm is arranged on the side of the locking piece in the plug-in direction.

7. The fakra connector according to claim 6, characterized in that: Pre-loaded spring arms are provided on both sides of the locking piece in the plugging direction.

8. The Fakra connector according to any one of claims 1 to 4, characterized in that: The locking piece is also provided with a shifting convex part, the shell is provided with a matching cavity for inserting the shifting convex part, the shifting convex part is provided with a convex rib, and the convex rib is interference-fitted with the cavity wall of the matching cavity.

9. The fakra connector according to any one of claims 1 to 4, characterized in that: The locking piece is also provided with a shifting convex portion for inserting into the shell, the overhanging height of the pre-loading arm is lower than the protruding height of the shifting convex portion, and the locking piece is also provided with a groove between the shifting convex portion and the pre-loading arm.

10. The Fakra connector according to any one of claims 1 to 4, characterized in that: The locking clamping part is a protruding structure, and the shell is provided with a locking clamping groove for the locking clamping part to clamp.

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