Coaxial plugging/connecting device

Coaxial connector

This creation is about a coaxial connector, especially a coaxial plug or a coaxial jack. An inner conductor is formed on the insertion side end of the dielectric body of the coaxial connector or while maintaining a distance from this end. The groove of the inner conductor portion has a radial diameter of the groove along the direction of the insertion side end and is reduced from a first predetermined radial diameter to a second predetermined radial diameter, wherein the inner conductor portion has at least a first diameter and a second diameter , The second diameter is smaller than the first diameter and smaller than the second predetermined radial diameter of the channel of the dielectric body. Diameter, and the first diameter of the inner conductor part needs to be larger than the second predetermined radial diameter of the channel, so that the junction of the first diameter and the second diameter of the inner conductor part forms a shoulder, which is tied to the inner conductor part The outer side is axially arranged, so that when the shoulder of the inner conductor part abuts against the radially reduced section of the groove of the dielectric body, the inner conductor part is located at a predetermined axial position within the outer conductor part.

When assembling this type of coaxial connector, the inner conductor part is pushed axially into the groove of the dielectric body until the inner conductor part is located at a predetermined position in the axial direction; at the predetermined position in the axial direction, the coaxial connector is inserted into it. The side ends have specific connection dimensions; if too much force is used when pushing the inner conductor part, the inner conductor part may be pushed beyond the predetermined position, thus damaging the axial connector, and the axial connector can no longer be used smoothly Transmit high-frequency signals; in addition, if an axial connector with the wrong connection size is inserted into a matching axial connector, the matching axial connector will also be damaged, and the result will also be unsuccessful Transmit high-frequency signals.

The US patent US 2003/0176104 A1 discloses a coaxial connector with a plastic shell. The coaxial connector conforms to the FAKRA (FAKRA=Fachkreis Automobiltechnik, automotive technology professional field) standardized formula of the so-called SMB connector; The plastic shell is used to clamp and protect the connector, and in the process of inserting another connector with a plastic shell, the connector is pre-positioned. The shell additionally has a mechanical code, so only the matching shell can be used. Insert each other.

The plastic shell of this type of coaxial connector, also known as FAKRA shell, is used in data transmission lines in the automotive technology field. Such data transmission lines are generally coaxial cables or similar cables based on electrical conductors. In the interface area, that is, in the shaft section where the housing and a mating plug are matched, in order to create a mechanical connection between the two plastic housings, the DIN standard 72594-1 of October 2004 is used for the protection of such FAKRA housings. The mechanical specifications have stipulated; the so-called DIN standard 72594-1 "road vehicles-50 ohm-high frequency interface (50-Ω-HFSSt)-Part 1: Standards and electrical requirements", this part stipulates the road When the vehicle uses high frequency, the impedance of the interface plug and connector must be 50 ohms to ensure the communication to the car and the external communication of the car. The first part above determines the standard and electrical requirements and characteristics, and ensures its replaceability. All car manufacturers with names are based on this specification, the content of which is formulated by the (German) Automobile Specifications Committee (FAKRA).

(Germany) Automotive Specifications Committee (FAKRA) represents the regional, national and international standardization interests of the automotive industry. Its task area includes formulating the consistency of all vehicles (except tractors for farming) produced in accordance with DIN 70010. , Replaceability and safety specifications, where the driving device of the road vehicle can be a combustion engine, electric motor or hybrid transmission. FAKRA also formulates the specifications for the construction of the above road vehicles (except local vehicles, fire trucks and ambulances). In addition It is also responsible for formulating the specifications for the overall assembly and structure of the aforementioned vehicles, as well as the specifications for the containers (ISO-containers). The formulation of the specifications can promote the rationalization and safety of automobile manufacturing, and make the automobile reach the standard of non-damaging the environment. In addition, The formulation of the specifications also promotes the current state-of-the-art technology and science to improve vehicle traffic safety, which is beneficial to both producers and consumers.

The main purpose of this creation is to provide a way to improve the assembly safety of the coaxial connector.

The feature of this creation: On the insertion side end of the dielectric body or while maintaining a distance from this end, a groove with an inner conductor is formed so that the radial diameter of the groove is along the direction of the insertion side end from the first The predetermined radial diameter is reduced to a second predetermined radial diameter, wherein the inner conductor portion has at least a first diameter and a second diameter, and the second diameter is smaller than the first diameter and larger than the first diameter of the channel of the dielectric. 2. The predetermined radial diameter is small, the first diameter of the inner conductor part needs to be such that the inner conductor part can match the first predetermined radial diameter of the channel, and the first diameter of the inner conductor part needs to be larger than the second predetermined radial diameter of the channel , So that the junction of the first diameter and the second diameter of the inner conductor part forms a shoulder, which is arranged axially on the outside of the inner conductor part, so that when the shoulder part of the inner conductor part abuts against the dielectric body When the radial diameter of the groove is reduced, the inner conductor part is located at a predetermined axial position within the outer conductor part.

The advantage of this structural design is that the inner conductor part is protected from being pushed out in the axial direction. When the coaxial connector is used, this protection function can also resist strong axial forces.

In addition, at least one clamping block is provided on the outer side of the inner conductor part, and at least one clamping slot is provided on the inner side of the dielectric body facing the groove, and when the inner conductor part is pushed axially into the groove of the dielectric body until At a predetermined position, the clamping block on the inner conductor part and the clamping slot on the dielectric body are engaged with each other, thereby achieving the additional function of axially correct positioning of the inner conductor part.

The part on the outer side of the inner conductor part extends over the entire circumference of the inner conductor part along the peripheral edge direction.

According to a preferred embodiment, the coaxial connector additionally has a coded housing, and the coded housing has a mechanical specification that complies with the FAKRA standardized formula of 50-Ω-HFSSt within the interface range.

Regarding the technical means used in this creation to achieve the above-mentioned purposes and effects, a preferred and feasible embodiment is presented, and the drawings are shown in detail as follows: Please refer to the first to fourth pictures, which are To show a preferred embodiment of this invention, the coaxial connector of this invention includes an outer conductor portion 10, an inner conductor portion 12, a dielectric body 14, a crimp sleeve 16, a coded housing 18 and a fuse 20. The coaxial connector has an insertion side end 22, which is used to connect the inner conductor portion 12 and the outer conductor portion 10 to the inner conductor portion and outer conductor portion of a matching coaxial connector, respectively, for electrical and mechanical performance. Plug in.

The dielectric body 14 has an axial slot 24 through which the inner conductor portion 12 can be pushed axially into the end of the dielectric body 14 that faces away from the insertion side end 22, and the inner conductor portion 12 is outside. A plurality of protruding blocks 26 are provided on the upper side. On the other hand, a corresponding slot 28 is formed on an inner side of the dielectric body 14 facing the channel 24. When the inner conductor portion 12 is located opposite to the outer conductor portion 10 at a predetermined axial position, the clamping blocks 26 are inserted into the clamping grooves 28. At the predetermined axial position, the inner conductor portion 12 extends into the insertion side end 22 to reach a predetermined connection size. When using a coaxial connector, push the inner conductor portion 12 axially into the dielectric body 14 from one end of the insertion side end 22 until the locking block 26 can be felt and heard to be inserted into the slot 28.

The channel 24 of the dielectric body 14 has a first predetermined radial diameter 30, which is reduced to a smaller second predetermined radial diameter 32 on the insertion side end 22, and the inner conductor portion 12 has a first diameter. 34, which is reduced to the smaller second diameter 36, and further forms a shoulder 38 outside the inner conductor portion 12. The first diameter 34 of the inner conductor portion 12 is larger than the second predetermined radial diameter 32 of the channel 24, by Therefore, the shoulder 38 on the tapered constricted section of the channel 24 abuts against the insertion side end 22, and therefore cannot continue to be moved in the axial direction. The shoulder 38 on the inner conductor part 12 is set to the axial direction. As a result, when the shoulder 38 on the tapered constriction of the channel 24 abuts on the insertion side end 22, the inner conductor portion 12 will be located at a predetermined axial position, and the clamping block 26 has been inserted into the clamping slot 28 As shown in the fourth figure, in this way, even if the axial force is large, it can still effectively avoid pushing the inner conductor part 12 along the axial direction to the insertion side end 22 beyond the predetermined axial position, thereby ensuring The connection dimensions on the insertion side end 22 are always correct.

A crimping sleeve 16 is provided at one end of the coaxial connector opposite to the insertion side end 22, and a coaxial wire (not shown in the figure) can be connected to the coaxial connector.

In summary, this creation has indeed achieved the intended use purpose and effect, and it is more ideal and practical than the conventional ones. However, the above-mentioned embodiments are only specific descriptions of the preferred embodiments of this creation. The embodiments are not intended to limit the scope of patent application for this creation. All other equivalent changes and modifications completed without departing from the technical means disclosed in this creation shall be included in the scope of patent application covered by this creation.

<p>10. . . Outer conductor part</p><p>12. . . Inner conductor</p><p>14. . . Dielectric</p><p>16. . . Curl sleeve</p><p>18. . . Encoding shell</p><p>20. . . fuse</p><p>twenty two. . . Insert the side end</p><p>twenty four. . . Channel</p><p>26. . . Jam</p><p>28. . . Card slot</p><p>30. . . First predetermined radial diameter</p><p>32. . . Second predetermined radial diameter</p><p>34. . . First diameter</p><p>36. . . Second diameter</p><p>38. . . Shoulder</p>

The first figure shows a cross-sectional view of this creative embodiment, where the inner conductor is pushed axially into the dielectric body until it reaches the first axial position.

The second figure shows a cross-sectional view of this creative embodiment, in which the inner conductor is pushed axially into the dielectric body until it reaches the second axial position.

The third figure shows a cross-sectional view of this creative embodiment. The inner conductor part is pushed axially into the dielectric body until it reaches the third axial position, and the card block of the inner conductor part is inserted into the card of the dielectric body.Inner slot. In the slot.

The fourth figure shows a cross-sectional view of this creative embodiment. The inner conductor is pushed axially into the dielectric body until it reaches the fourth axial position, and the shoulder of the inner conductor abuts against the dielectric body. The position of the diameter reduction section.