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CN-116892660-B - Modular plug connector

CN116892660BCN 116892660 BCN116892660 BCN 116892660BCN-116892660-B

Abstract

The invention relates to a plug connector having a base body with a through-channel. The clamping cage provided in the receiving channel of the sleeve section can be inserted into the receiving channel of the sleeve section in the assembly direction and is held in a form-fitting manner by means of a radially elastic locking arm with a radially outwardly projecting locking extension, which in the inserted state engages in a form-fitting manner in a recess of the peripheral wall of the sleeve section. Two retaining arms extending parallel to each other extend into the through-opening of the cage in the rest state thereof and are configured to be radially elastically expandable into a tensioned state. The locking element is arranged to be movable from a release position releasing the retaining arm to a locking position locking it in a stationary state. The retaining arm is formed on a retaining clip which can be inserted into the clip cage in a vertical fitting direction, and the retaining clip is movable radially to a blocking position in which the through-hole can be moved from a lead-in position in which the retaining arm is expanded from a rest state to a tensioned state to a locking position in which the locking element can be moved to the locking position when the retaining arm is in the rest state.

Inventors

  • HESS JOCHEM-ANDREAS

Assignees

  • 福士汽车配套部件责任有限公司

Dates

Publication Date
20260512
Application Date
20230314
Priority Date
20220330

Claims (18)

  1. 1. Plug connector (100) for connecting a first fluid line to a mating plug connector (102), having a base body (104) with a through-channel (106), wherein the through-channel (106) is in fluid connection with an end of the base body (104) designed as a sleeve region end (108), wherein a cage (112) is provided in a receiving channel (110) of the sleeve region (108), wherein the cage (112) can be inserted into the receiving channel (110) of the sleeve region (108) in an assembly direction (M) and is held by means of radially elastic locking arms (114) which form-fittingly engage in recesses (118) in a circumferential wall of the sleeve region (108), wherein the locking arms (114) are formed on the outer circumference of the cage (112), wherein two retaining arms (120) extending parallel to one another in a resting state of the retaining arms (120) can be inserted into the cage (112) and can be expanded into a radially elastic through-hole (122) by means of radially elastic locking arms (114), wherein a locking element (124) which can be moved axially relative to the assembly direction (M) is arranged on the outer circumference of the sleeve section (108) so as to be movable from a release position in which the retaining arm (120) is released to a locking position in which the retaining arm (120) is locked in a stationary state, It is characterized in that the method comprises the steps of, The retaining arm (120) is formed on a retaining clip (126) which can be inserted into the clip cage (112) perpendicularly to the assembly direction (M), and the retaining clip (126) can be moved radially to the through-opening (122) from a position of introduction in which the retaining arm (120) can be expanded from a rest state to a tensioned state to a blocking position in which the locking element (124) can be moved into the locking position when the retaining arm (120) is in the rest state, Wherein the locking element (124) is prevented from moving from the release position to the locking position by the retaining clip (126) when the retaining arm (120) is in a rest state and the retaining clip (126) is in the introduction position.
  2. 2. The plug connector (100) according to claim 1, It is characterized in that the method comprises the steps of, The locking arm (114) extends in an axial direction which points in the assembly direction (M) and the locking extension (116) is formed with a locking edge (128) which points counter to the assembly direction (M), engages in a recess (118) in the peripheral wall of the sleeve section (108) in the inserted state of the cage (112) and bears against the wall of the recess (118) in a form-fitting manner counter to the assembly direction (M).
  3. 3. Plug connector (100) according to claim 1 or 2, It is characterized in that the method comprises the steps of, The cage (112) has four locking arms (114) which are each offset by 90 DEG from one another and engage in four correspondingly designed recesses (118) in the peripheral wall of the sleeve section (108) which are each offset by 90 DEG from one another.
  4. 4. Plug connector (100) according to claim 1 or 2, It is characterized in that the method comprises the steps of, The locking element (124) is designed as a sleeve surrounding the sleeve section (108), wherein the sleeve has at least one radially elastic clamping device (130) which is arranged to lock into a bearing recess (132) in the circumferential wall of the sleeve section (108) at least in the release position.
  5. 5. Plug connector (100) according to claim 1 or 2, It is characterized in that the method comprises the steps of, A bearing recess (132) in the peripheral wall of the sleeve section (108) is arranged behind the recess (118) for receiving the locking extension in the assembly direction (M), such that in the release position of the locking element (124) the clamping device (130) snaps into the bearing recess (132) and locks with the locking extension (116) in the recess (118) designed as an opening in the locking position of the locking element (124).
  6. 6. Plug connector (100) according to claim 1 or 2, It is characterized in that the method comprises the steps of, The clamping cage (112) has two windows (134) which are open radially to the through-hole (122) and each have a reinforcing strut (136) which extends axially to the assembly direction (M), such that the holding clips (126) with the holding arms (120) each extend through the windows (134), so that the holding arms (120) of the holding clips (126) are arranged radially inside the through-hole (122) via the reinforcing struts.
  7. 7. Plug connector (100) according to claim 1 or 2, It is characterized in that the method comprises the steps of, The retaining clip (126) is U-shaped and the retaining arms (120) are connected by a connecting section (138) and extend from the connecting section (138) in the same direction to the free ends, respectively.
  8. 8. The plug connector (100) according to claim 7, It is characterized in that the method comprises the steps of, The retaining arms (120) are designed to extend radially outwards in a wave-like manner between the free end and the connecting section (138) and extend around an imaginary first circular path (Z) in a cross section perpendicular to the assembly direction (M) and mirror each other.
  9. 9. The plug connector (100) according to claim 7, It is characterized in that the method comprises the steps of, The retaining arms (120) of the retaining clip (126) each have an inclined recess (140) on the side opposite the assembly direction (M) that rises radially inwards in the assembly direction (M), wherein the recesses (140) extend in a cross section perpendicular to the assembly direction (M) along an imaginary second circular path (X).
  10. 10. The plug connector (100) according to claim 8, It is characterized in that the method comprises the steps of, The retaining arms (120) of the retaining clip (126) each have an inclined recess (140) on the side opposite the assembly direction (M) that rises radially inwards in the assembly direction (M), wherein the recesses (140) extend in a cross section perpendicular to the assembly direction (M) along an imaginary second circular path (X).
  11. 11. Plug connector (100) according to claim 9 or 10, It is characterized in that the method comprises the steps of, The recess (140) is formed in such a way that the center point of the imaginary second circular path (X) is laterally offset from the center point of the imaginary first circular path (Z) in the direction of the connecting section (138) and is arranged in the center between the holding arms (120) and in the introduction position of the holding clip (126), the second circular path (X) is arranged concentric with the through hole (122) and in the blocking position of the holding clip (126) the imaginary first circular path (Z) is arranged concentric with the through hole (122).
  12. 12. The plug connector (100) according to claim 7, It is characterized in that the method comprises the steps of, In the blocking position of the retaining clip (126), a radial gap (142) is formed between the connecting section (138) of the retaining clip (126) and the clip cage (112), and the locking element (124) has a wall section (144) which protrudes axially counter to the assembly direction (M) and is designed to correspond to the gap (142), and in the locking position the locking element (124) engages at least axially with the protruding wall section (144) into the radial gap (142).
  13. 13. The plug connector (100) according to claim 12, It is characterized in that the method comprises the steps of, The locking element (124) penetrates into the radial gap (142) with a protruding wall section (144) in the locked position.
  14. 14. Plug connector (100) according to claim 1 or 2, It is characterized in that the method comprises the steps of, At the free ends of the holding arms (120), in each case a radially inwardly directed bearing hook (146) is arranged, which engages in a form-fitting manner in a correspondingly designed bearing groove (148) formed by bearing teeth (145) in the insertion position of the holding clip (126) and in the rest state of the holding arms (120), wherein the bearing teeth (145) are formed on the mounting wall section (152) of the clip (112).
  15. 15. The plug connector (100) according to claim 14, It is characterized in that the method comprises the steps of, The clamping cage (112) has assembly grooves (150) which are configured corresponding to the support hooks (146), and the assembly grooves (150) are configured next to the support grooves (148) in the direction of the radial direction through-holes (122), and the support hooks (146) are in the blocking position of the holding clamp (126) and are respectively arranged in one of the assembly grooves (150) in the rest state of the holding arm (120).
  16. 16. Plug connector (100) according to claim 1 or 2, It is characterized in that the method comprises the steps of, A radially outwardly directed locking lug (154) is formed at the free end of the holding arm (120) and is arranged in axial alignment with a blocking section (156) of the locking element (124) in the insertion position of the holding clip (126) relative to the assembly direction (M), such that the locking lug (154) positively prevents the locking element (124) from being moved into the locking position against the assembly direction (M).
  17. 17. The plug connector (100) according to claim 16, It is characterized in that the method comprises the steps of, The locking lug (154) is surrounded by a blocking section (156) of the locking element (124) in the locking position of the locking element (124) and in the blocking position of the retaining clip (126) and in the rest state of the retaining arm (120).
  18. 18. The plug connector (100) according to claim 7, It is characterized in that the method comprises the steps of, The retaining clip (126) has two expansion lugs (158), each expansion lug (158) being formed radially in each case in a transition region between one of the retaining arms (120) and the connecting section (138), wherein the expansion lugs (158) bear against two inclined surfaces (160) of a release wall section (162) of the cage (112) widening toward the through opening (122) in the blocking position of the retaining clip (126), so that the retaining arms (120) can be expanded from the rest state into the tensioned state by the interaction of the expansion lugs (158) with the inclined surfaces (160) by means of a release force (F) radially applied to the connecting section (138) relative to the through opening (122).

Description

Modular plug connector Technical Field The invention relates to a plug connector for connecting a first fluid line to a mating plug connector. The plug connector has a base body with a through-channel, wherein the through-channel is in fluid connection with an end of the base body, which is embodied as a sleeve section. A cage is disposed in the receiving channel of the sleeve section. The cage can be inserted into the receiving channel of the sleeve section in the assembly direction and held in a form-fitting manner by radially elastic locking arms. For this purpose, the locking arm has a radially outwardly projecting locking extension which engages in a form-locking manner in a recess in the peripheral wall of the sleeve section in the inserted state. The locking arms are also formed on the outer periphery of the cage. Furthermore, when the retaining arms are in a rest state, two retaining arms extending parallel to each other extend into the through-holes of the cage. In this case, the holding arm is designed to be elastically expandable radially to the through-hole into a tensioned state. A locking element which is axially movable relative to the assembly direction is arranged on the outer circumference of the sleeve section so as to be movable from a release position in which the retaining arm is released, to a locking position in which the retaining arm is locked in a stationary state. Background Plug connectors of the type mentioned are known, for example, from WO 2015/180875 A1. The plug connector has a locking device which points axially in the assembly direction for arranging the cage in the sleeve section and a retaining device which points axially in the opposite direction to the assembly direction for fixing the mating plug connector. Furthermore, the plug connector known from WO 2015/180875 A1 has an axially movable locking element, which in the locked position prevents the mating plug connector from being disengaged from the sleeve section during operation. This results in the disadvantage that it may happen that the locking element may shift into the locked position without the mating plug connector being inserted into the through hole. As a result, the retention clip blocks the mating plug connector, which prevents insertion until the locking element has been transferred again from the locking position to the release position. A problem is also known from WO 2015/180875 A1 that the plug connector has a relatively small overlap with the mating plug connector as seen in the assembly direction in terms of area due to its retaining arms which are directed opposite to the assembly direction. In particular, the combination of intense vibration and large size may lead to failure of the plug connection. DE 10 2020 108 073 A1 discloses a plug connector with a retaining device which can be inserted radially into a sleeve section for fixing a mating plug connector. The plug connector furthermore has a locking device in the form of a clip. The locking device holds the sleeve section of the housing and the cage radially in the assembly direction, so that the cage is held in a positive-locking manner in the receiving channel of the sleeve section. At the same time, the locking means acts as a blocking means for the locking element in the rest state, so that the locking element can only be transferred to the locking position and held when the locking means is deployed to the tensioned state. If the plug connector is used for a long time, the locking device is in its extended, tensioned state for a long time. It has been found that the locking means may be plastically deformed in the direction of the expanded state. Furthermore, the plug connector known from DE 10 2020 108 073 A1 requires a complex structure, including an additional retaining clip and an additional locking clip, which increases the assembly and production costs. Disclosure of Invention The object of the present invention is to provide a plug connector which overcomes the disadvantages known from the prior art, while at least retaining equivalent sealing and safety properties. According to the invention, this object is achieved by the features of claim 1. The space requirement for the holding arms for fixing the mating plug connector is advantageously reduced in that the holding arms are formed on holding clips which can be inserted into the cage perpendicular to the assembly direction and which can be moved radially to the through opening from an insertion position, in which the holding arms can be expanded from a rest state into a tensioned state, to a blocking position, in which the locking element can be moved into the locking position during the holding arms are in the rest state. In particular, a large overlap between the holding device and the mating plug connector can advantageously be produced by the radially extending holding arms, which improves the holding of the mating plug connector in the through-hole, in particular in the ca