CN220492246U - Split terminal assembly and connector - Google Patents

Abstract

The utility model discloses a split terminal assembly and a connector, wherein the split terminal assembly comprises a terminal assembly body, a coaxial cable and a primary locking structure arranged outside the terminal assembly body, the primary locking structure comprises an outer insulator arranged on the outer peripheral wall of a part of the terminal assembly body and a first positioning ring arranged on the outer peripheral wall of the outer insulator in a circumferential direction in a protruding manner, one end of the outer insulator, which is close to the coaxial cable, is detachably provided with a second positioning ring, and the terminal assembly can be effectively locked through a positioning groove formed between a ring body of the second positioning ring and the first positioning ring, so that the split terminal assembly can be matched with a terminal cavity of a special connector assembly, and has good mechanical strength performance; meanwhile, the accommodating groove capable of accommodating the crimping piece into the inner side of the ring body of the second positioning ring is formed in the inner wall of the ring body, so that the crimping space between the crimping piece and the coaxial cable is not occupied, the signal performance of the terminal assembly can be effectively ensured, and stable and reliable signal transmission can be realized.

Description

Split terminal assembly and connector

Technical Field

The utility model relates to the technical field of coaxial connectors, in particular to a split terminal assembly and a connector.

Background

The FAKRA connector is a connector for transmitting radio frequency signals, is widely applied to the automotive industry, such as the vehicle internet, a reversing image, a GPS positioning system and the like, and has become a standard radio frequency signal connector commonly used in the industry. The FAKRA connector comprises a male end and a female end, the core component of the FAKRA connector is a terminal assembly composed of two coaxial inner and outer conductors, the inner conductor is used for being connected with a coaxial cable or a printed circuit board, the outer conductor is used for shielding an electromagnetic field generated by signals, and the coaxial structure formed by the inner conductor and the outer conductor can transmit radio frequency signals.

Automotive connectors are available in a variety of forms, and certain parts require the FAKRA terminal assemblies to be fitted into the terminal cavities of a particular sheath to enable the sheath to additionally perform the function of transmitting radio frequency signals in addition to the function of the existing connector. Because such a sheath structure is special, the primary locking structure of a part of FAKRA terminal assembly cannot be directly adapted to the terminal cavity, and when the primary locking structure of the terminal assembly is improved to be adapted to the terminal cavity of a special sheath, it is difficult to simultaneously consider the mechanical strength and the signal performance of the terminal assembly.

Disclosure of Invention

In view of the above, the present utility model provides a split terminal assembly and a connector, which solve the problem that it is difficult to simultaneously achieve mechanical strength and signal performance when a primary locking structure of the terminal assembly is modified to adapt to a terminal cavity of a special sheath.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a split type terminal assembly, includes terminal assembly body, coaxial cable and sets up the primary locking structure in the terminal assembly body outside, and coaxial cable passes through the crimping piece and is connected to the terminal assembly body, primary locking structure is including setting up the outer insulator on terminal assembly body part peripheral wall and along circumference and protruding the first holding ring that sets up on outer insulator peripheral wall, the outer insulator is close to the detachable of one end of coaxial cable and is provided with the second holding ring, and the second holding ring includes the ring body and sets up and be connected to the spacer bush of outer insulator with the ring body is integrative, form the constant head tank that is used for locking the terminal assembly between ring body and the first holding ring, just be provided with on the inner wall of ring body and accept the crimping piece and get into its inboard accepting groove.

In a preferred embodiment, the end of the crimping piece that mates with the terminal assembly body is at least partially disposed within the receiving slot.

In a preferred embodiment, the positioning sleeve and the outer insulator are detachably connected in a snap-fit or threaded manner.

In the preferred embodiment, the locating sleeve comprises a plurality of arc-shaped clamping arms attached to the outer peripheral wall of the outer insulator, clamping grooves are formed in the clamping arms, and clamping points matched with the clamping grooves are arranged on the outer peripheral wall of the outer insulator in a protruding mode.

In a preferred embodiment, the outer insulator is recessed inwards to form a containing groove matched with the shapes of the clamping arms, and after the clamping arms are clamped into the outer insulator, the clamping arms are flush with the outer surface of the outer insulator.

In a preferred embodiment, the plurality of clamping arms are uniformly arranged along the circumferential direction of the ring body, guide grooves are formed between the adjacent clamping arms, and at least one convex rib matched with the shape of the guide grooves is arranged in the accommodating groove of the outer insulator.

In a preferred embodiment, the outer insulator is injection molded with the first positioning ring on a portion of the peripheral wall of the terminal assembly body.

The connector assembly comprises a sheath and the terminal assembly, wherein a terminal cavity for accommodating the terminal assembly is formed in the sheath along the axial direction, an arc-shaped clamping piece is arranged on the inner wall of the terminal cavity along the circumferential direction, and the arc-shaped clamping piece is clamped to the positioning groove after the terminal assembly is arranged in the terminal cavity.

In a preferred embodiment, the outer diameter of the second retaining ring is not smaller than the outer diameter of the first retaining ring.

In a preferred embodiment, the end of the arcuate clip facing the direction of insertion of the terminal assembly has a chamfer.

Compared with the prior art, the utility model has the beneficial effects that: the primary locking structure in the terminal assembly adopts a split type design, comprises a first positioning ring which is arranged on the outer insulator in a protruding way, and a second positioning ring which is arranged on the outer insulator and close to one end of the coaxial cable in a detachable way, and can effectively lock the terminal assembly through a positioning groove formed between a ring body of the second positioning ring and the first positioning ring, so that the terminal assembly can be matched with a terminal cavity of a special connector assembly, and has good mechanical strength performance; meanwhile, the accommodating groove capable of accommodating the crimping piece into the inner side of the ring body of the second positioning ring is formed in the inner wall of the ring body along the circumferential direction, so that the crimping space between the crimping piece and the coaxial cable is not occupied, the signal performance of the terminal assembly can be effectively ensured, and stable and reliable signal transmission can be realized.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a schematic illustration of a prior art partial FAKRA terminal assembly mated with a terminal cavity of a special sheath;

fig. 2 is a schematic structural view of a split terminal assembly according to the present utility model;

FIG. 3 is an exploded view of the terminal assembly of FIG. 2;

FIG. 4 is a schematic view of a second retaining ring of the terminal assembly of FIG. 2;

fig. 5 is a schematic view of the positional relationship of the terminal assembly body, coaxial cable and crimp tab;

fig. 6 is a schematic structural diagram of a connector according to the present utility model;

FIG. 7 is a schematic view of the connector of FIG. 6 with the terminal assemblies mated with the terminal cavities of the jacket;

fig. 8 is an enlarged partial schematic view at a in fig. 7.

The figures are marked as follows:

10. a sheath; 101. a terminal cavity; 102. an arc-shaped clamping piece; 103. chamfering; 11. a terminal assembly;

20. a terminal assembly body; 201. an outer conductor; 202. an inner insulator; 203. an inner conductor;

30. a coaxial cable; 301. a conductive core; 302. an insulating layer;

40. a crimping piece;

50. an outer insulator; 501. a first positioning ring; 502. a receiving groove; 503. a convex rib;

60. a second positioning ring; 601. a receiving groove; 602. a ring body; 603. a positioning sleeve; 6031. a clamping arm; 6032. a clamping groove; 6033. a stuck point; 6034. a guide groove;

70. and a positioning groove.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

Automotive connectors are available in a variety of forms, and certain parts require the FAKRA terminal assemblies to be fitted into the terminal cavities of a particular sheath to enable the sheath to additionally perform the function of transmitting radio frequency signals in addition to the function of the existing connector. Because of the special structure of the sheath, the primary locking structure of part of the FAKRA terminal assembly cannot be directly matched with the terminal cavity, for example, an arc-shaped clamping piece 102 is integrally formed on the inner wall of the terminal cavity 101 of the sheath, and the arc-shaped clamping piece 102 has a certain width in the axial direction of the sheath 10 and is used for realizing primary locking of the terminal assembly 11; the primary locking structure on the partial FAKRA terminal assembly includes a first positioning ring 501 located at the front end and a second positioning ring 60 located at the rear end, where a positioning groove 70 for primary locking is formed between the first positioning ring 501 and the second positioning ring 60, and since the distance between the first positioning ring 501 and the second positioning ring 60 is generally smaller and cannot adapt to the arc-shaped clamping member 102, the primary locking structure on the terminal assembly 11 needs to be improved, specifically when improving, in order to ensure SI performance of the terminal assembly 11, the positions of the first positioning ring 501 and the crimping piece 40 crimped on the outer side of the outer conductor 201 cannot be changed, so if the width of the arc-shaped clamping member 102 is larger, the situation that the second positioning ring 60 is thinner or cannot be shaped smoothly occurs, refer to fig. 1 specifically, and further, the FAKRA terminal assembly cannot be directly adapted to the terminal cavity 101 of a special sheath. Therefore, it is difficult to simultaneously achieve both mechanical strength and signal performance of the terminal assembly 11 when the primary locking structure of the terminal assembly 11 is modified to fit the terminal cavity 101 of a particular sheath.

As shown in fig. 2 to 5, the present utility model provides a split type terminal assembly including a terminal assembly body 20, a coaxial cable 30, and a primary locking structure provided outside the terminal assembly body 20, the coaxial cable 30 being connected to the terminal assembly body 20 by a pressing tab 40. Wherein, the coaxial cable 30 comprises a conductive core 301 and an insulating layer 302 coated outside the conductive core 301; the terminal assembly body 20 includes an outer conductor 201, an inner insulator 202 and an inner conductor 203 sequentially disposed from outside to inside, the conductive core 301 of the coaxial cable 30 is electrically connected to the inner conductor 203 of the terminal assembly body 20, and the insulating layer 302 of the coaxial cable 30 is fixedly connected to the outer conductor 201 of the terminal assembly body 20 through the pressing tab 40, referring specifically to fig. 5, which is a more conventional technical means in the art, and will not be described in detail herein.

As shown in fig. 2, the primary locking structure of the present utility model comprises an outer insulator 50 provided on a part of the outer peripheral wall of the terminal assembly body 20, and a first positioning ring 501 provided on the outer peripheral wall of the outer insulator 50 in a protruding manner in the circumferential direction, the outer insulator 50 and the first positioning ring 501 being injection-molded on a part of the outer peripheral wall of the terminal assembly body 20; the outer insulator 50 is provided with the second positioning ring 60 near the detachable one end of coaxial cable 30, and the second positioning ring 60 includes ring body 602 and with the integrative setting of ring body and be connected to the spacer 603 of outer insulator 50, form between ring body 602 and the first positioning ring 501 and be used for locking the constant head tank 70 of terminal assembly 11, and be provided with on the inner wall of ring body 602 along circumference and accept the holding tank 601 that crimping piece 40 got into its inboard. The terminal assembly of the utility model can effectively lock the terminal assembly 11 through the positioning groove 70 formed between the ring body 602 of the second positioning ring 60 and the first positioning ring 501, thereby being capable of adapting to the terminal cavity 101 of a special connector assembly, so that the connector assembly can additionally realize the function of transmitting radio frequency signals besides the function of the existing connector, and has good mechanical strength performance; meanwhile, since the accommodating groove 601 capable of accommodating the crimping piece 40 into the inner side of the ring body 602 of the second positioning ring 60 is formed in the ring body, the crimping space between the crimping piece 40 and the coaxial cable 30 is not occupied, and therefore, when the primary locking structure of the terminal assembly 11 is improved, the positions of the first positioning ring 501 and the crimping piece 40 crimped on the outer side of the outer conductor 201 (the terminal assembly body 20) are not changed, the signal performance of the terminal assembly 11 can be effectively ensured, and stable and reliable signal transmission can be realized.

In one embodiment, as shown in fig. 2, in order to further enhance the mechanical strength performance of the terminal assembly 11, the width of the ring body 602 may be appropriately increased, so that the end of the pressing tab 40 that is engaged with the terminal assembly body 20 is at least partially disposed inside the receiving groove 601.

As shown in fig. 4 and 3, the positioning sleeve 603 is detachably connected with the outer insulator 50 by a buckle or a thread, and is preferably selected to be a more convenient buckle connection in consideration of convenience of installation. Specifically, the positioning sleeve 603 is composed of a plurality of arc-shaped clamping arms 6031 attached to the peripheral wall of the outer insulator 50, the clamping arms 6031 are provided with clamping grooves 6032, and clamping points 6033 matched with the clamping grooves 6032 are arranged on the peripheral wall of the outer insulator 50 in a protruding mode.

In an embodiment, as shown in fig. 3, the outer insulator 50 is recessed inwards to form a receiving groove 502 matching the shape of the plurality of clamping arms 6031, and after the plurality of clamping arms 6031 are clamped into the outer insulator 50, the plurality of clamping arms 6031 are flush with the outer surface of the outer insulator 50, so that the terminal assembly 11 is conveniently and smoothly installed into the sheath 10 of the connector, and the terminal cavity 101 inside the sheath 10 is prevented from interfering with the plurality of clamping arms 6031 in the process of installing the terminal assembly 11.

Further, as shown in fig. 3 and fig. 4, a plurality of clamping arms 6031 are uniformly arranged along the circumferential direction of the ring body 602, guide grooves 6034 are formed between adjacent clamping arms 6031, at least one convex rib 503 matched with the shape of the guide grooves 6034 is arranged in the accommodating groove 502 of the outer insulator 50, and in the process of clamping the second positioning ring 60 into the outer insulator 50, at least one convex rib 503 can be inserted into the guide grooves 6034 to achieve the purpose of guiding the insertion of the second positioning ring 60, so that the problems of misplug or misplug and the like are prevented.

The assembly process of the terminal assembly of the utility model is as follows:

(1) The second positioning ring 60 is put through the outer side of the coaxial cable 30 in advance;

(2) The inner insulator 202 is fixed after being arranged in the outer conductor 201, the inner conductor 203 is electrically connected with the conductive core 301 of the coaxial cable 30 through crimping, then the inner conductor 203 and the coaxial cable 30 are integrally arranged in the inner insulator 202 from the tail part of the outer conductor 201, and the convex clamping points arranged on the outer wall of the inner conductor 203 are matched with corresponding square holes on the inner insulator 202, so that the terminal assembly body 20 is assembled;

(3) The outer conductor 201 and the coaxial cable 30 are fixedly connected by the crimping piece 40;

(4) After pushing the second retaining ring 60 through the crimp 40, it is cooperatively connected with the outer insulator 50 on the outer conductor 201 to complete the assembly of the terminal assembly 11 of the present utility model.

The utility model further discloses a connector, as shown in fig. 6 and 7, comprising a sheath 10 and the terminal assembly 11, wherein a terminal cavity 101 for accommodating the terminal assembly 11 is axially formed in the sheath 10, an arc-shaped clamping piece 102 is circumferentially arranged on the inner wall of the terminal cavity 101, and the arc-shaped clamping piece 102 is clamped to the positioning groove 70 after the terminal assembly 11 is arranged in the terminal cavity 101. As shown in fig. 8, in order to facilitate smooth insertion of the terminal assembly 11 into the sheath 10, a chamfer 103 is provided at an end of the arc-shaped clip 102 facing the insertion direction of the terminal assembly 11.

In an embodiment, as shown in fig. 7, the outer diameter of the second positioning ring 60 is set to be not smaller than the outer diameter of the first positioning ring 501, and preferably set to be larger than the outer diameter of the first positioning ring 501, so that after the terminal assembly 11 is inserted in place, the side wall of the second positioning ring 60 abuts against the side wall of the arc-shaped clamping member 102, so that the terminal assembly 11 can be prevented from being excessively inserted, and damage to the sheath 10 can be prevented.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (10)

1. The utility model provides a split type terminal assembly, includes terminal assembly body, coaxial cable and sets up the primary locking structure in the terminal assembly body outside, and the coaxial cable passes through the crimping piece and is connected to the terminal assembly body, primary locking structure is including setting up the outer insulator on terminal assembly body part peripheral wall and along circumference and protruding the first positioning ring that sets up on outer insulator peripheral wall, its characterized in that:

the utility model discloses a coaxial cable, including outer insulator, coaxial cable, outer insulator, the one end detachable that is close to the coaxial cable is provided with the second holding ring, the second holding ring includes the ring body and sets up and be connected to the spacer bush of outer insulator with the ring body is integrative, form between ring body and the first holding ring and be used for carrying out the constant head tank of locking to the terminal assembly, just be provided with along circumference on the inner wall of ring body and accept the crimping piece and get into its inboard accepting groove.

2. A split terminal assembly as claimed in claim 1, wherein: one end of the crimping piece, which is matched with the terminal assembly body, is at least partially arranged in the accommodating groove.

3. A split terminal assembly as claimed in claim 1, wherein: the positioning sleeve is detachably connected with the outer insulator through a buckle or a thread.

4. A split terminal assembly as claimed in claim 3, wherein: the locating sleeve consists of a plurality of clamping arms which are arc-shaped and are attached to the outer peripheral wall of the outer insulator, clamping grooves are formed in the clamping arms, and clamping points matched with the clamping grooves are arranged on the outer peripheral wall of the outer insulator in a protruding mode.

5. A split terminal assembly as defined in claim 4, wherein: the outer insulator is inwards sunken to form an accommodating groove matched with the shapes of the clamping arms, and after the clamping arms are clamped into the outer insulator, the clamping arms are flush with the outer surface of the outer insulator.

6. A split terminal assembly as defined in claim 5, wherein: the plurality of clamping arms are uniformly arranged along the circumferential direction of the ring body, guide grooves are formed between the adjacent clamping arms, and at least one convex rib matched with the shape of the guide grooves is arranged in the accommodating groove of the outer insulator.

7. A split terminal assembly as claimed in claim 1, wherein: the outer insulator and the first positioning ring are injection molded on part of the peripheral wall of the terminal assembly body.

8. A connector, characterized in that: the terminal assembly comprises a sheath and the terminal assembly according to any one of claims 1-7, wherein a terminal cavity for accommodating the terminal assembly is formed in the sheath along the axial direction, an arc-shaped clamping piece is arranged on the inner wall of the terminal cavity along the circumferential direction, and the arc-shaped clamping piece is clamped to the positioning groove after the terminal assembly is arranged in the terminal cavity.

9. A connector as defined in claim 8, wherein: the outer diameter of the second positioning ring is not smaller than that of the first positioning ring.

10. A connector as defined in claim 8, wherein: one end of the arc-shaped clamping piece facing the insertion direction of the terminal assembly is provided with a chamfer.